diff --git a/src/EditorFeatures/CSharpTest/AddMissingImports/CSharpAddMissingImportsRefactoringProviderTests.cs b/src/EditorFeatures/CSharpTest/AddMissingImports/CSharpAddMissingImportsRefactoringProviderTests.cs
index 38eb4c2c153f9..9829f22f6f62e 100644
--- a/src/EditorFeatures/CSharpTest/AddMissingImports/CSharpAddMissingImportsRefactoringProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/AddMissingImports/CSharpAddMissingImportsRefactoringProviderTests.cs
@@ -63,31 +63,31 @@ private Task TestInRegularAndScriptAsync(
         [WpfFact]
         public async Task AddMissingImports_AddImport_PasteContainsSingleMissingImport()
         {
-            var code = @"
-class C
-{
-    public [|D|] Foo { get; }
-}
+            var code = """
+                class C
+                {
+                    public [|D|] Foo { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
-";
+                namespace A
+                {
+                    public class D { }
+                }
+                """;
 
-            var expected = @"
-using A;
+            var expected = """
+                using A;
 
-class C
-{
-    public D Foo { get; }
-}
+                class C
+                {
+                    public D Foo { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
-";
+                namespace A
+                {
+                    public class D { }
+                }
+                """;
 
             await TestInRegularAndScriptAsync(code, expected);
         }
@@ -95,47 +95,47 @@ public class D { }
         [WpfFact]
         public async Task AddMissingImports_AddImportsBelowSystem_PlaceSystemFirstPasteContainsMultipleMissingImports()
         {
-            var code = @"
-using System;
+            var code = """
+                using System;
 
-class C
-{
-    [|public D Foo { get; }
-    public E Bar { get; }|]
-}
+                class C
+                {
+                    [|public D Foo { get; }
+                    public E Bar { get; }|]
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
-            var expected = @"
-using System;
-using A;
-using B;
+            var expected = """
+                using System;
+                using A;
+                using B;
 
-class C
-{
-    public D Foo { get; }
-    public E Bar { get; }
-}
+                class C
+                {
+                    public D Foo { get; }
+                    public E Bar { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
             await TestInRegularAndScriptAsync(code, expected, placeSystemNamespaceFirst: true, separateImportDirectiveGroups: false);
         }
@@ -143,47 +143,47 @@ public class E { }
         [WpfFact]
         public async Task AddMissingImports_AddImportsAboveSystem_DoNotPlaceSystemFirstPasteContainsMultipleMissingImports()
         {
-            var code = @"
-using System;
+            var code = """
+                using System;
 
-class C
-{
-    [|public D Foo { get; }
-    public E Bar { get; }|]
-}
+                class C
+                {
+                    [|public D Foo { get; }
+                    public E Bar { get; }|]
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
-            var expected = @"
-using A;
-using B;
-using System;
+            var expected = """
+                using A;
+                using B;
+                using System;
 
-class C
-{
-    public D Foo { get; }
-    public E Bar { get; }
-}
+                class C
+                {
+                    public D Foo { get; }
+                    public E Bar { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
             await TestInRegularAndScriptAsync(code, expected, placeSystemNamespaceFirst: false, separateImportDirectiveGroups: false);
         }
@@ -191,48 +191,48 @@ public class E { }
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/pull/42221")]
         public async Task AddMissingImports_AddImportsUngrouped_SeparateImportGroupsPasteContainsMultipleMissingImports()
         {
-            var code = @"
-using System;
+            var code = """
+                using System;
 
-class C
-{
-    [|public D Foo { get; }
-    public E Bar { get; }|]
-}
+                class C
+                {
+                    [|public D Foo { get; }
+                    public E Bar { get; }|]
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
-            var expected = @"
-using A;
-using B;
+            var expected = """
+                using A;
+                using B;
 
-using System;
+                using System;
 
-class C
-{
-    public D Foo { get; }
-    public E Bar { get; }
-}
+                class C
+                {
+                    public D Foo { get; }
+                    public E Bar { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
             await TestInRegularAndScriptAsync(code, expected, placeSystemNamespaceFirst: false, separateImportDirectiveGroups: true);
         }
@@ -240,45 +240,45 @@ public class E { }
         [WpfFact]
         public async Task AddMissingImports_PartialFix_PasteContainsFixableAndAmbiguousMissingImports()
         {
-            var code = @"
-class C
-{
-    [|public D Foo { get; }
-    public E Bar { get; }|]
-}
+            var code = """
+                class C
+                {
+                    [|public D Foo { get; }
+                    public E Bar { get; }|]
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class D { }
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class D { }
+                    public class E { }
+                }
+                """;
 
-            var expected = @"
-using B;
+            var expected = """
+                using B;
 
-class C
-{
-    public D Foo { get; }
-    public E Bar { get; }
-}
+                class C
+                {
+                    public D Foo { get; }
+                    public E Bar { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class D { }
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class D { }
+                    public class E { }
+                }
+                """;
 
             await TestInRegularAndScriptAsync(code, expected);
         }
@@ -286,17 +286,17 @@ public class E { }
         [WpfFact]
         public async Task AddMissingImports_NoAction_NoPastedSpan()
         {
-            var code = @"
-class C
-{
-    public D[||] Foo { get; }
-}
+            var code = """
+                class C
+                {
+                    public D[||] Foo { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
-";
+                namespace A
+                {
+                    public class D { }
+                }
+                """;
 
             await TestMissingInRegularAndScriptAsync(code);
         }
@@ -304,17 +304,17 @@ public class D { }
         [WpfFact]
         public async Task AddMissingImports_NoAction_PasteIsNotMissingImports()
         {
-            var code = @"
-class [|C|]
-{
-    public D Foo { get; }
-}
+            var code = """
+                class [|C|]
+                {
+                    public D Foo { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
-";
+                namespace A
+                {
+                    public class D { }
+                }
+                """;
 
             await TestMissingInRegularAndScriptAsync(code);
         }
@@ -322,22 +322,22 @@ public class D { }
         [WpfFact]
         public async Task AddMissingImports_NoAction_PasteContainsAmibiguousMissingImport()
         {
-            var code = @"
-class C
-{
-    public [|D|] Foo { get; }
-}
+            var code = """
+                class C
+                {
+                    public [|D|] Foo { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class D { }
-}
-";
+                namespace B
+                {
+                    public class D { }
+                }
+                """;
 
             await TestMissingInRegularAndScriptAsync(code);
         }
@@ -346,44 +346,44 @@ public class D { }
         [WpfFact]
         public async Task AddMissingImports_AddMultipleImports_NoPreviousImports()
         {
-            var code = @"
-class C
-{
-    [|public D Foo { get; }
-    public E Bar { get; }|]
-}
+            var code = """
+                class C
+                {
+                    [|public D Foo { get; }
+                    public E Bar { get; }|]
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
-            var expected = @"
-using A;
-using B;
+            var expected = """
+                using A;
+                using B;
 
-class C
-{
-    public D Foo { get; }
-    public E Bar { get; }
-}
+                class C
+                {
+                    public D Foo { get; }
+                    public E Bar { get; }
+                }
 
-namespace A
-{
-    public class D { }
-}
+                namespace A
+                {
+                    public class D { }
+                }
 
-namespace B
-{
-    public class E { }
-}
-";
+                namespace B
+                {
+                    public class E { }
+                }
+                """;
 
             await TestInRegularAndScriptAsync(code, expected, placeSystemNamespaceFirst: false, separateImportDirectiveGroups: false);
         }
diff --git a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticBracketCompletionTests.cs b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticBracketCompletionTests.cs
index 372324fa830cf..81c518f916762 100644
--- a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticBracketCompletionTests.cs
+++ b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticBracketCompletionTests.cs
@@ -45,10 +45,12 @@ public void Attribute_TopLevel2()
         [WpfFact]
         public void InvalidLocation_String()
         {
-            var code = @"class C
-{
-    string s = ""$$
-}";
+            var code = """
+                class C
+                {
+                    string s = "$$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.Null(session);
         }
@@ -56,11 +58,13 @@ public void InvalidLocation_String()
         [WpfFact]
         public void InvalidLocation_String2()
         {
-            var code = @"class C
-{
-    string s = @""
-$$
-}";
+            var code = """
+                class C
+                {
+                    string s = @"
+                $$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.Null(session);
         }
@@ -68,10 +72,12 @@ public void InvalidLocation_String2()
         [WpfFact]
         public void InvalidLocation_Comment()
         {
-            var code = @"class C
-{
-    //$$
-}";
+            var code = """
+                class C
+                {
+                    //$$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.Null(session);
         }
@@ -79,10 +85,12 @@ public void InvalidLocation_Comment()
         [WpfFact]
         public void InvalidLocation_Comment2()
         {
-            var code = @"class C
-{
-    /* $$
-}";
+            var code = """
+                class C
+                {
+                    /* $$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.Null(session);
         }
@@ -90,10 +98,12 @@ public void InvalidLocation_Comment2()
         [WpfFact]
         public void InvalidLocation_Comment3()
         {
-            var code = @"class C
-{
-    /// $$
-}";
+            var code = """
+                class C
+                {
+                    /// $$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.Null(session);
         }
@@ -101,10 +111,12 @@ public void InvalidLocation_Comment3()
         [WpfFact]
         public void InvalidLocation_Comment4()
         {
-            var code = @"class C
-{
-    /** $$
-}";
+            var code = """
+                class C
+                {
+                    /** $$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.Null(session);
         }
@@ -112,13 +124,15 @@ public void InvalidLocation_Comment4()
         [WpfFact]
         public void MultiLine_Comment()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        /* */$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        /* */$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
 
@@ -128,13 +142,15 @@ void Method()
         [WpfFact]
         public void MultiLine_DocComment()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        /** */$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        /** */$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
 
@@ -144,13 +160,15 @@ void Method()
         [WpfFact]
         public void String1()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = """"$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = ""$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
 
@@ -160,13 +178,15 @@ void Method()
         [WpfFact]
         public void String2()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @""""$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @""$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
 
@@ -176,8 +196,10 @@ void Method()
         [WpfFact]
         public void Attribute_OpenBracket()
         {
-            var code = @"$$
-class C { }";
+            var code = """
+                $$
+                class C { }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -188,8 +210,10 @@ class C { }";
         [WpfFact]
         public void Attribute_OpenBracket_Delete()
         {
-            var code = @"$$
-class C { }";
+            var code = """
+                $$
+                class C { }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -201,8 +225,10 @@ class C { }";
         [WpfFact]
         public void Attribute_OpenBracket_Tab()
         {
-            var code = @"$$
-class C { }";
+            var code = """
+                $$
+                class C { }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -214,8 +240,10 @@ class C { }";
         [WpfFact]
         public void Attribute_OpenBracket_CloseBracket()
         {
-            var code = @"$$
-class C { }";
+            var code = """
+                $$
+                class C { }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -227,10 +255,12 @@ class C { }";
         [WpfFact]
         public void Array_Multiple_Invalid()
         {
-            var code = @"class C 
-{
-    int [$$]
-}";
+            var code = """
+                class C 
+                {
+                    int [$$]
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -241,10 +271,12 @@ int [$$]
         [WpfFact]
         public void Array_Nested()
         {
-            var code = @"class C
-{
-    int [] i = new int [arr$$]
-}";
+            var code = """
+                class C
+                {
+                    int [] i = new int [arr$$]
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
 
@@ -254,36 +286,36 @@ public void Array_Nested()
         [WpfFact]
         public void ListPattern()
         {
-            var code = @"
-class C
-{
-    void M(object o)
-    {
-        _ = o is$$
-    }
-}
-";
-            var expectedBeforeReturn = @"
-class C
-{
-    void M(object o)
-    {
-        _ = o is []
-    }
-}
-";
-            var expected = @"
-class C
-{
-    void M(object o)
-    {
-        _ = o is
-        [
-
-        ]
-    }
-}
-";
+            var code = """
+                class C
+                {
+                    void M(object o)
+                    {
+                        _ = o is$$
+                    }
+                }
+                """;
+            var expectedBeforeReturn = """
+                class C
+                {
+                    void M(object o)
+                    {
+                        _ = o is []
+                    }
+                }
+                """;
+            var expected = """
+                class C
+                {
+                    void M(object o)
+                    {
+                        _ = o is
+                        [
+
+                        ]
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             CheckStart(session.Session);
             CheckText(session.Session, expectedBeforeReturn);
diff --git a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLessAndGreaterThanCompletionTests.cs b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLessAndGreaterThanCompletionTests.cs
index 90278f958f549..bf3c19bdb047d 100644
--- a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLessAndGreaterThanCompletionTests.cs
+++ b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLessAndGreaterThanCompletionTests.cs
@@ -52,10 +52,12 @@ public void Class_TypeParameter()
         [WpfFact]
         public void Method_TypeParameter()
         {
-            var code = @"class C
-{
-    void Method$$
-}";
+            var code = """
+                class C
+                {
+                    void Method$$
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -108,10 +110,12 @@ public void Multiple_Invalid()
         [WpfFact]
         public void Multiple_Nested()
         {
-            var code = @"class C<T>
-{
-    C<C$$>
-}";
+            var code = """
+                class C<T>
+                {
+                    C<C$$>
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -121,14 +125,16 @@ public void Multiple_Nested()
         [WpfFact]
         public void TypeArgument_Invalid()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var i = 1;
-        var b = i $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var i = 1;
+                        var b = i $$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
@@ -137,13 +143,15 @@ void Method()
         [WpfFact]
         public void TypeArgument1()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var a = new List$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var a = new List$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -152,13 +160,15 @@ void Method()
         [WpfFact]
         public void TypeArgument2()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var a = typeof(List$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var a = typeof(List$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -168,10 +178,12 @@ void Method()
         [WpfFact]
         public void TypeParameterReturnType()
         {
-            var code = @"class C
-{
-    List$$
-}";
+            var code = """
+                class C
+                {
+                    List$$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -183,10 +195,12 @@ public void TypeParameterReturnType()
         [WpfFact]
         public void TypeParameterInDecl()
         {
-            var code = @"class C
-{
-    void List$$
-}";
+            var code = """
+                class C
+                {
+                    void List$$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -198,10 +212,12 @@ void List$$
         [WpfFact]
         public void TypeParameterInDeclWith()
         {
-            var code = @"class C
-{
-    async Task$$
-}";
+            var code = """
+                class C
+                {
+                    async Task$$
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -213,15 +229,17 @@ async Task$$
         [WpfFact]
         public void TypeArgumentWithUsing()
         {
-            var code = @"using System.Collections.Generic;
-
-class C
-{
-    void Test()
-    {
-        List$$
-    }
-}";
+            var code = """
+                using System.Collections.Generic;
+
+                class C
+                {
+                    void Test()
+                    {
+                        List$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -233,13 +251,15 @@ void Test()
         [WpfFact]
         public void TypeArgumentNoUsing()
         {
-            var code = @"class C
-{
-    void Test()
-    {
-        List$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Test()
+                    {
+                        List$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
@@ -249,14 +269,16 @@ void Test()
         [WpfFact]
         public void NotInLessThanComparisonOperation()
         {
-            var code = @"using System.Linq;
-class C
-{
-    void Test(int[] args)
-    {
-        var a = args[0]$$
-    }
-}";
+            var code = """
+                using System.Linq;
+                class C
+                {
+                    void Test(int[] args)
+                    {
+                        var a = args[0]$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
@@ -266,14 +288,16 @@ void Test(int[] args)
         [WpfFact]
         public void NotInLessThanComparisonOperationAfterConditionalAccessExpression()
         {
-            var code = @"using System.Linq;
-class C
-{
-    void Test(object[] args, object[] other)
-    {
-        var a = args?.First()$$
-    }
-}";
+            var code = """
+                using System.Linq;
+                class C
+                {
+                    void Test(object[] args, object[] other)
+                    {
+                        var a = args?.First()$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
@@ -283,14 +307,16 @@ void Test(object[] args, object[] other)
         [WpfFact]
         public void TypeArgumentInConditionalAccessExpressionSimple()
         {
-            var code = @"using System.Linq;
-class C
-{
-    void Test(object[] args)
-    {
-        args?.OfType$$
-    }
-}";
+            var code = """
+                using System.Linq;
+                class C
+                {
+                    void Test(object[] args)
+                    {
+                        args?.OfType$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -300,25 +326,27 @@ void Test(object[] args)
         [WpfFact]
         public void TypeArgumentInConditionalAccessExpressionNested()
         {
-            var code = @"class C
-{
-    void Test()
-    {
-        Outer<int> t = new Outer<int>();
-        t?.GetInner<int>()?.Method$$
-    }
-}
-class Outer<T>
-{
-    public Inner<U> GetInner<U>()
-    {
-        return new Inner<U>();
-    }
-}
-class Inner<V>
-{
-    public void Method<X>() { }
-}";
+            var code = """
+                class C
+                {
+                    void Test()
+                    {
+                        Outer<int> t = new Outer<int>();
+                        t?.GetInner<int>()?.Method$$
+                    }
+                }
+                class Outer<T>
+                {
+                    public Inner<U> GetInner<U>()
+                    {
+                        return new Inner<U>();
+                    }
+                }
+                class Inner<V>
+                {
+                    public void Method<X>() { }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -330,33 +358,35 @@ public void Method<X>() { }
         [WpfFact]
         public void TypeArgumentInConditionalAccessExpressionDeeplyNested()
         {
-            var code = @"class C
-{
-    void Test()
-    {
-        new Outer1<int>()?.GetInner<int>()?.GetInner().DoSomething$$
-    }
-}
-internal class Outer1<T>
-{
-    public Outer2<U> GetInner<U>()
-    {
-        return new Outer2<U>();
-    }
-}
-internal class Outer2<U>
-{
-    public Outer2() { }
-    public Inner GetInner()
-    {
-        return new Inner();
-    }
-}
-internal class Inner
-{
-    public Inner() { }
-    public void DoSomething<V>() { }
-}";
+            var code = """
+                class C
+                {
+                    void Test()
+                    {
+                        new Outer1<int>()?.GetInner<int>()?.GetInner().DoSomething$$
+                    }
+                }
+                internal class Outer1<T>
+                {
+                    public Outer2<U> GetInner<U>()
+                    {
+                        return new Outer2<U>();
+                    }
+                }
+                internal class Outer2<U>
+                {
+                    public Outer2() { }
+                    public Inner GetInner()
+                    {
+                        return new Inner();
+                    }
+                }
+                internal class Inner
+                {
+                    public Inner() { }
+                    public void DoSomething<V>() { }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -366,31 +396,33 @@ public void DoSomething<V>() { }
         [WpfFact]
         public void TypeArgumentInConditionalAccessExpressionWithLambdas()
         {
-            var code = @"using System;
-using System.Collections.Generic;
-using System.Linq;
-
-class Program
-{
-    void Goo(object[] args)
-    {
-        var a = new Outer();
-        a?.M(x => x?.ToString())?.Method$$
-    }
-}
-
-public class Outer
-{
-    internal Inner M(Func<object, object> p)
-    {
-        throw new NotImplementedException();
-    }
-}
-
-public class Inner
-{
-    public void Method<U>() { }
-}";
+            var code = """
+                using System;
+                using System.Collections.Generic;
+                using System.Linq;
+
+                class Program
+                {
+                    void Goo(object[] args)
+                    {
+                        var a = new Outer();
+                        a?.M(x => x?.ToString())?.Method$$
+                    }
+                }
+
+                public class Outer
+                {
+                    internal Inner M(Func<object, object> p)
+                    {
+                        throw new NotImplementedException();
+                    }
+                }
+
+                public class Inner
+                {
+                    public void Method<U>() { }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -399,10 +431,11 @@ public void Method<U>() { }
         [WpfFact]
         public void FunctionPointerStartSession()
         {
-            var code = @"
-class C
-{
-    delegate*$$";
+            var code = """
+                class C
+                {
+                    delegate*$$
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
diff --git a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLiteralCompletionTests.cs b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLiteralCompletionTests.cs
index e22ef9a569a3c..e72052289dd4c 100644
--- a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLiteralCompletionTests.cs
+++ b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticLiteralCompletionTests.cs
@@ -65,13 +65,15 @@ public void VerbatimString_TopLevel2()
         [WpfFact]
         public void String_String()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = """"$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = ""$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
@@ -80,13 +82,15 @@ void Method()
         [WpfFact]
         public void String_VerbatimString()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = """"@$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = ""@$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -95,13 +99,15 @@ void Method()
         [WpfFact]
         public void String_Char()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @""""$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @""$$
+                    }
+                }
+                """;
             using var session = CreateSessionSingleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -110,13 +116,15 @@ void Method()
         [WpfFact]
         public void Method_String()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -125,13 +133,15 @@ void Method()
         [WpfFact]
         public void Method_String_Delete()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -141,13 +151,15 @@ void Method()
         [WpfFact]
         public void Method_String_Tab()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -157,13 +169,15 @@ void Method()
         [WpfFact]
         public void Method_String_Quotation()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -173,13 +187,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_String()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -188,13 +204,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_String_Delete()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -204,13 +222,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_String_Tab()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -220,13 +240,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_String_Quotation()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -236,13 +258,15 @@ void Method()
         [WpfFact]
         public void Method_InterpolatedString()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $[||]$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $[||]$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -251,13 +275,15 @@ void Method()
         [WpfFact]
         public void Method_InterpolatedString_Delete()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $[||]$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $[||]$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -267,13 +293,15 @@ void Method()
         [WpfFact]
         public void Method_InterpolatedString_Tab()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $[||]$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $[||]$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -283,13 +311,15 @@ void Method()
         [WpfFact]
         public void Method_InterpolatedString_Quotation()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $[||]$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $[||]$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -299,13 +329,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_InterpolatedString()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $@$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $@$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -314,13 +346,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_InterpolatedString_Delete()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $@$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $@$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -330,13 +364,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_InterpolatedString_Tab()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $@$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $@$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -346,13 +382,15 @@ void Method()
         [WpfFact]
         public void VerbatimMethod_InterpolatedString_Quotation()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $@$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $@$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -362,13 +400,15 @@ void Method()
         [WpfFact]
         public void Preprocessor1()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-#line $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                #line $$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -378,13 +418,15 @@ void Method()
         [WpfFact]
         public void Preprocessor2()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-#line $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                #line $$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -394,13 +436,15 @@ void Method()
         [WpfFact]
         public void Preprocessor3()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-#line $$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                #line $$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -411,13 +455,15 @@ void Method()
         [WpfFact]
         public void VerbatimStringDoubleQuote()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @""""$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @""$$
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
@@ -426,13 +472,15 @@ void Method()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/59178")]
         public void String_CompleteLiteral()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = ""this"" + $$that"";
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = "this" + $$that";
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
@@ -441,13 +489,15 @@ void Method()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/59178")]
         public void String_BeforeOtherString1()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $$ + "" + bar"";
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $$ + " + bar";
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -456,13 +506,15 @@ void Method()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/59178")]
         public void String_BeforeOtherString2()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = $$ + ""; } "";
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = $$ + "; } ";
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -471,14 +523,16 @@ void Method()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/59178")]
         public void String_DoNotCompleteVerbatim()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = ""this"" + @$$that
-            and this"";
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = "this" + @$$that
+                            and this";
+                    }
+                }
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -487,11 +541,13 @@ void Method()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/59178")]
         public void String_CompleteLiteral_EndOfFile()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = ""this"" + $$that""";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = "this" + $$that"
+                """;
             using var session = CreateSessionDoubleQuote(code);
             Assert.NotNull(session);
             CheckStart(session.Session, expectValidSession: false);
diff --git a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticParenthesisCompletionTests.cs b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticParenthesisCompletionTests.cs
index ae8d551ef2c14..ce67d48cdd059 100644
--- a/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticParenthesisCompletionTests.cs
+++ b/src/EditorFeatures/CSharpTest/AutomaticCompletion/AutomaticParenthesisCompletionTests.cs
@@ -27,13 +27,15 @@ public void Creation()
         [WpfFact]
         public void String1()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = """"$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = ""$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -42,13 +44,15 @@ void Method()
         [WpfFact]
         public void String2()
         {
-            var code = @"class C
-{
-    void Method()
-    {
-        var s = @""""$$
-    }
-}";
+            var code = """
+                class C
+                {
+                    void Method()
+                    {
+                        var s = @""$$
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -57,10 +61,12 @@ void Method()
         [WpfFact]
         public void ParameterList_OpenParenthesis()
         {
-            var code = @"class C
-{
-    void Method$$
-}";
+            var code = """
+                class C
+                {
+                    void Method$$
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -70,10 +76,12 @@ void Method$$
         [WpfFact]
         public void ParameterList_OpenParenthesis_Delete()
         {
-            var code = @"class C
-{
-    void Method$$
-}";
+            var code = """
+                class C
+                {
+                    void Method$$
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -84,10 +92,12 @@ void Method$$
         [WpfFact]
         public void ParameterList_OpenParenthesis_Tab()
         {
-            var code = @"class C
-{
-    void Method$$
-}";
+            var code = """
+                class C
+                {
+                    void Method$$
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -98,10 +108,12 @@ void Method$$
         [WpfFact]
         public void ParameterList_OpenParenthesis_CloseParenthesis()
         {
-            var code = @"class C
-{
-    void Method$$
-}";
+            var code = """
+                class C
+                {
+                    void Method$$
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -112,13 +124,15 @@ void Method$$
         [WpfFact]
         public void Argument()
         {
-            var code = @"class C 
-{
-    void Method()
-    {
-        Method$$
-    }
-}";
+            var code = """
+                class C 
+                {
+                    void Method()
+                    {
+                        Method$$
+                    }
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -128,13 +142,15 @@ void Method()
         [WpfFact]
         public void Argument_Invalid()
         {
-            var code = @"class C 
-{
-    void Method()
-    {
-        Method($$)
-    }
-}";
+            var code = """
+                class C 
+                {
+                    void Method()
+                    {
+                        Method($$)
+                    }
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
@@ -144,13 +160,15 @@ void Method()
         [WpfFact]
         public void Array_Nested()
         {
-            var code = @"class C
-{
-    int Method(int i)
-    {
-        Method(Method$$)
-    }
-}";
+            var code = """
+                class C
+                {
+                    int Method(int i)
+                    {
+                        Method(Method$$)
+                    }
+                }
+                """;
             using var session = CreateSession(code);
             Assert.NotNull(session);
             CheckStart(session.Session);
@@ -160,17 +178,18 @@ int Method(int i)
         [WpfFact]
         public void OpenParenthesisWithExistingCloseParen()
         {
-            var code = @"class A
-{
-    public A(int a, int b) { }
-
-    public static A Create()
-    {
-        return new A$$
-            0, 0);
-    }
-}
-";
+            var code = """
+                class A
+                {
+                    public A(int a, int b) { }
+
+                    public static A Create()
+                    {
+                        return new A$$
+                            0, 0);
+                    }
+                }
+                """;
 
             using var session = CreateSession(code);
             Assert.NotNull(session);
diff --git a/src/EditorFeatures/CSharpTest/BlockCommentEditing/CloseBlockCommentTests.cs b/src/EditorFeatures/CSharpTest/BlockCommentEditing/CloseBlockCommentTests.cs
index 1d83013f42519..7b856631b6820 100644
--- a/src/EditorFeatures/CSharpTest/BlockCommentEditing/CloseBlockCommentTests.cs
+++ b/src/EditorFeatures/CSharpTest/BlockCommentEditing/CloseBlockCommentTests.cs
@@ -25,182 +25,182 @@ public sealed class CloseBlockCommentTests : AbstractTypingCommandHandlerTest<Ty
         [WpfFact]
         public void ClosedRegularlyAfterAsterisk()
         {
-            var code = @"
-    /*
-     *
-     *$$
-";
-            var expected = @"
-    /*
-     *
-     */$$
-";
+            var code = """
+                /*
+                 *
+                 *$$
+                """;
+            var expected = """
+                /*
+                 *
+                 */$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void ClosedAfterAsteriskSpace1()
         {
-            var code = @"
-    /*
-     *
-     * $$
-";
-            var expected = @"
-    /*
-     *
-     */$$
-";
+            var code = """
+                /*
+                 *
+                 * $$
+                """;
+            var expected = """
+                /*
+                 *
+                 */$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void ClosedAfterAsteriskSpace2()
         {
-            var code = @"
-    /*
-     * $$
-";
-            var expected = @"
-    /*
-     */$$
-";
+            var code = """
+                /*
+                 * $$
+                """;
+            var expected = """
+                /*
+                 */$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterSlashAsteriskSpace()
         {
-            var code = @"
-    /* $$
-";
-            var expected = @"
-    /* /$$
-";
+            var code = """
+                /* $$
+                """;
+            var expected = """
+                /* /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterSlashDoubleAsteriskSpace()
         {
-            var code = @"
-    /** $$
-";
-            var expected = @"
-    /** /$$
-";
+            var code = """
+                /** $$
+                """;
+            var expected = """
+                /** /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterSpaceWithoutAsterisk()
         {
-            var code = @"
-    /*
-     *
-       $$
-";
-            var expected = @"
-    /*
-     *
-       /$$
-";
+            var code = """
+                /*
+                 *
+                   $$
+                """;
+            var expected = """
+                /*
+                 *
+                   /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceWithNonWhitespaceBeforeAsterisk1()
         {
-            var code = @"
-    /*
-     *
-    ** $$
-";
-            var expected = @"
-    /*
-     *
-    ** /$$
-";
+            var code = """
+                /*
+                 *
+                ** $$
+                """;
+            var expected = """
+                /*
+                 *
+                ** /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceWithNonWhitespaceBeforeAsterisk2()
         {
-            var code = @"
-    /*
-     *
-    /* $$
-";
-            var expected = @"
-    /*
-     *
-    /* /$$
-";
+            var code = """
+                /*
+                 *
+                /* $$
+                """;
+            var expected = """
+                /*
+                 *
+                /* /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceWithNonWhitespaceBeforeAsterisk3()
         {
-            var code = @"
-    /*
-     *
-a    * $$
-";
-            var expected = @"
-    /*
-     *
-a    * /$$
-";
+            var code = """
+                    /*
+                     *
+                a    * $$
+                """;
+            var expected = """
+                    /*
+                     *
+                a    * /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceWithNonWhitespaceAfterCursor1()
         {
-            var code = @"
-    /*
-     *
-     * $$/
-";
-            var expected = @"
-    /*
-     *
-     * /$$/
-";
+            var code = """
+                /*
+                 *
+                 * $$/
+                """;
+            var expected = """
+                /*
+                 *
+                 * /$$/
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceWithNonWhitespaceAfterCursor2()
         {
-            var code = @"
-    /*
-     *
-     * $$*
-";
-            var expected = @"
-    /*
-     *
-     * /$$*
-";
+            var code = """
+                /*
+                 *
+                 * $$*
+                """;
+            var expected = """
+                /*
+                 *
+                 * /$$*
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceWithNonWhitespaceAfterCursor3()
         {
-            var code = @"
-    /*
-     *
-     * $$ a
-";
-            var expected = @"
-    /*
-     *
-     * /$$ a
-";
+            var code = """
+                /*
+                 *
+                 * $$ a
+                """;
+            var expected = """
+                /*
+                 *
+                 * /$$ a
+                """;
             Verify(code, expected);
         }
 
@@ -208,80 +208,80 @@ public void NotClosedAfterAsteriskSpaceWithNonWhitespaceAfterCursor3()
         public void NotClosedAfterAsteriskSpaceWithWhitespaceAfterCursor()
         {
             // Note: There is a single trailing space after the cursor.
-            var code = @"
-    /*
-     *
-     * $$ 
-";
-            var expected = @"
-    /*
-     *
-     * /$$ 
-";
+            var code = """
+                /*
+                 *
+                 * $$ 
+                """;
+            var expected = """
+                /*
+                 *
+                 * /$$ 
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskDoubleSpace()
         {
-            var code = @"
-    /*
-     *
-     *  $$
-";
-            var expected = @"
-    /*
-     *
-     *  /$$
-";
+            var code = """
+                /*
+                 *
+                 *  $$
+                """;
+            var expected = """
+                /*
+                 *
+                 *  /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void ClosedAfterAsteriskSpaceWithNothingBeforeAsterisk()
         {
-            var code = @"
-    /*
-     *
-* $$
-";
-            var expected = @"
-    /*
-     *
-*/$$
-";
+            var code = """
+                    /*
+                     *
+                * $$
+                """;
+            var expected = """
+                    /*
+                     *
+                */$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void ClosedAfterAsteriskSpaceWithTabsBeforeAsterisk()
         {
-            var code = @"
-    /*
-     *
-<tab><tab>* $$
-";
-            var expected = @"
-    /*
-     *
-<tab><tab>*/$$
-";
+            var code = """
+                    /*
+                     *
+                <tab><tab>* $$
+                """;
+            var expected = """
+                    /*
+                     *
+                <tab><tab>*/$$
+                """;
             VerifyTabs(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceWithOptionOff()
         {
-            var code = @"
-    /*
-     *
-     * $$
-";
-            var expected = @"
-    /*
-     *
-     * /$$
-";
+            var code = """
+                /*
+                 *
+                 * $$
+                """;
+            var expected = """
+                /*
+                 *
+                 * /$$
+                """;
             Verify(code, expected, workspace =>
             {
                 var globalOptions = workspace.GetService<IGlobalOptionService>();
@@ -292,50 +292,52 @@ public void NotClosedAfterAsteriskSpaceWithOptionOff()
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceOutsideComment()
         {
-            var code = @"
-   / *
-     *
-     * $$
-";
-            var expected = @"
-   / *
-     *
-     * /$$
-";
+            var code = """
+                / *
+                  *
+                  * $$
+                """;
+            var expected = """
+                / *
+                  *
+                  * /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void NotClosedAfterAsteriskSpaceInsideString()
         {
-            var code = @"
-class C
-{
-    string s = @""
-    /*
-     *
-     * $$
-";
-            var expected = @"
-class C
-{
-    string s = @""
-    /*
-     *
-     * /$$
-";
+            var code = """
+                class C
+                {
+                    string s = @"
+                    /*
+                     *
+                     * $$
+                """;
+            var expected = """
+                class C
+                {
+                    string s = @"
+                    /*
+                     *
+                     * /$$
+                """;
             Verify(code, expected);
         }
 
         [WpfFact]
         public void ClosedAfterAsteriskSpaceEndOfFile()
         {
-            var code = @"
-    /*
-     * $$";
-            var expected = @"
-    /*
-     */$$";
+            var code = """
+                /*
+                 * $$
+                """;
+            var expected = """
+                /*
+                 */$$
+                """;
             Verify(code, expected);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/BraceMatching/CSharpBraceMatcherTests.cs b/src/EditorFeatures/CSharpTest/BraceMatching/CSharpBraceMatcherTests.cs
index ee8dd9977911f..eec2fc6f10469 100644
--- a/src/EditorFeatures/CSharpTest/BraceMatching/CSharpBraceMatcherTests.cs
+++ b/src/EditorFeatures/CSharpTest/BraceMatching/CSharpBraceMatcherTests.cs
@@ -625,18 +625,20 @@ public async Task TestVerbatimUtf8String7()
         [WpfFact]
         public async Task TestConditionalDirectiveWithSingleMatchingDirective()
         {
-            var code = @"
-public class C 
-{
-#if$$ CHK 
-#endif
-}";
-            var expected = @"
-public class C 
-{
-#if$$ CHK 
-[|#endif|]
-}";
+            var code = """
+                public class C 
+                {
+                #if$$ CHK 
+                #endif
+                }
+                """;
+            var expected = """
+                public class C 
+                {
+                #if$$ CHK 
+                [|#endif|]
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -645,20 +647,22 @@ public class C
         [WpfFact]
         public async Task TestConditionalDirectiveWithTwoMatchingDirectives()
         {
-            var code = @"
-public class C 
-{
-#if$$ CHK 
-#else
-#endif
-}";
-            var expected = @"
-public class C 
-{
-#if$$ CHK 
-[|#else|]
-#endif
-}";
+            var code = """
+                public class C 
+                {
+                #if$$ CHK 
+                #else
+                #endif
+                }
+                """;
+            var expected = """
+                public class C 
+                {
+                #if$$ CHK 
+                [|#else|]
+                #endif
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -667,22 +671,24 @@ public class C
         [WpfFact]
         public async Task TestConditionalDirectiveWithAllMatchingDirectives()
         {
-            var code = @"
-public class C 
-{
-#if CHK 
-#elif RET
-#else
-#endif$$
-}";
-            var expected = @"
-public class C 
-{
-[|#if|] CHK 
-#elif RET
-#else
-#endif
-}";
+            var code = """
+                public class C 
+                {
+                #if CHK 
+                #elif RET
+                #else
+                #endif$$
+                }
+                """;
+            var expected = """
+                public class C 
+                {
+                [|#if|] CHK 
+                #elif RET
+                #else
+                #endif
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -691,18 +697,20 @@ public class C
         [WpfFact]
         public async Task TestRegionDirective()
         {
-            var code = @"
-public class C 
-{
-$$#region test
-#endregion
-}";
-            var expected = @"
-public class C 
-{
-#region test
-[|#endregion|]
-}";
+            var code = """
+                public class C 
+                {
+                $$#region test
+                #endregion
+                }
+                """;
+            var expected = """
+                public class C 
+                {
+                #region test
+                [|#endregion|]
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -711,36 +719,38 @@ public class C
         [WpfFact]
         public async Task TestInterleavedDirectivesInner()
         {
-            var code = @"
-#define CHK
-public class C 
-{
-    void Test()
-    {
-#if CHK
-$$#region test
-    var x = 5;
-#endregion
-#else
-    var y = 6;
-#endif
-    }
-}";
-            var expected = @"
-#define CHK
-public class C 
-{
-    void Test()
-    {
-#if CHK
-#region test
-    var x = 5;
-[|#endregion|]
-#else
-    var y = 6;
-#endif
-    }
-}";
+            var code = """
+                #define CHK
+                public class C 
+                {
+                    void Test()
+                    {
+                #if CHK
+                $$#region test
+                    var x = 5;
+                #endregion
+                #else
+                    var y = 6;
+                #endif
+                    }
+                }
+                """;
+            var expected = """
+                #define CHK
+                public class C 
+                {
+                    void Test()
+                    {
+                #if CHK
+                #region test
+                    var x = 5;
+                [|#endregion|]
+                #else
+                    var y = 6;
+                #endif
+                    }
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -749,36 +759,38 @@ void Test()
         [WpfFact]
         public async Task TestInterleavedDirectivesOuter()
         {
-            var code = @"
-#define CHK
-public class C 
-{
-    void Test()
-    {
-#if$$ CHK
-#region test
-    var x = 5;
-#endregion
-#else
-    var y = 6;
-#endif
-    }
-}";
-            var expected = @"
-#define CHK
-public class C 
-{
-    void Test()
-    {
-#if CHK
-#region test
-    var x = 5;
-#endregion
-[|#else|]
-    var y = 6;
-#endif
-    }
-}";
+            var code = """
+                #define CHK
+                public class C 
+                {
+                    void Test()
+                    {
+                #if$$ CHK
+                #region test
+                    var x = 5;
+                #endregion
+                #else
+                    var y = 6;
+                #endif
+                    }
+                }
+                """;
+            var expected = """
+                #define CHK
+                public class C 
+                {
+                    void Test()
+                    {
+                #if CHK
+                #region test
+                    var x = 5;
+                #endregion
+                [|#else|]
+                    var y = 6;
+                #endif
+                    }
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -787,16 +799,18 @@ void Test()
         [WpfFact]
         public async Task TestUnmatchedDirective1()
         {
-            var code = @"
-public class C 
-{
-$$#region test
-}";
-            var expected = @"
-public class C 
-{
-#region test
-}";
+            var code = """
+                public class C 
+                {
+                $$#region test
+                }
+                """;
+            var expected = """
+                public class C 
+                {
+                #region test
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -805,16 +819,18 @@ public class C
         [WpfFact]
         public async Task TestUnmatchedDirective2()
         {
-            var code = @"
-#d$$efine CHK
-public class C 
-{
-}";
-            var expected = @"
-#define CHK
-public class C 
-{
-}";
+            var code = """
+                #d$$efine CHK
+                public class C 
+                {
+                }
+                """;
+            var expected = """
+                #define CHK
+                public class C 
+                {
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -823,22 +839,24 @@ public class C
         [WpfFact]
         public async Task TestUnmatchedConditionalDirective()
         {
-            var code = @"
-class Program
-{
-    static void Main(string[] args)
-    {#if$$
+            var code = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {#if$$
 
-    }
-}";
-            var expected = @"
-class Program
-{
-    static void Main(string[] args)
-    {#if
+                    }
+                }
+                """;
+            var expected = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {#if
 
-    }
-}";
+                    }
+                }
+                """;
 
             await TestAsync(code, expected);
         }
@@ -847,22 +865,24 @@ static void Main(string[] args)
         [WpfFact]
         public async Task TestUnmatchedConditionalDirective2()
         {
-            var code = @"
-class Program
-{
-    static void Main(string[] args)
-    {#else$$
-
-    }
-}";
-            var expected = @"
-class Program
-{
-    static void Main(string[] args)
-    {#else
-
-    }
-}";
+            var code = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {#else$$
+
+                    }
+                }
+                """;
+            var expected = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {#else
+
+                    }
+                }
+                """;
 
             await TestAsync(code, expected);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.AddImports.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.AddImports.cs
index db291e17526f3..a762076eefa27 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.AddImports.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.AddImports.cs
@@ -20,11 +20,12 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task AddParameterAddsAllImports()
         {
-            var markup = @"
-class C
-{
-    void $$M() { }
-}";
+            var markup = """
+                class C
+                {
+                    void $$M() { }
+                }
+                """;
 
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(
@@ -35,16 +36,17 @@ class C
                         CallSiteKind.Todo),
                     "System.Collections.Generic.Dictionary<System.ConsoleColor, System.Threading.Tasks.Task<System.ComponentModel.AsyncOperation>>")};
 
-            var updatedCode = @"
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Threading.Tasks;
+            var updatedCode = """
+                using System;
+                using System.Collections.Generic;
+                using System.ComponentModel;
+                using System.Threading.Tasks;
 
-class C
-{
-    void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
-}";
+                class C
+                {
+                    void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -52,13 +54,14 @@ void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
         [Fact]
         public async Task AddParameterAddsOnlyMissingImports()
         {
-            var markup = @"
-using System.ComponentModel;
+            var markup = """
+                using System.ComponentModel;
 
-class C
-{
-    void $$M() { }
-}";
+                class C
+                {
+                    void $$M() { }
+                }
+                """;
 
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(
@@ -69,16 +72,17 @@ class C
                         CallSiteKind.Todo),
                     "System.Collections.Generic.Dictionary<System.ConsoleColor, System.Threading.Tasks.Task<System.ComponentModel.AsyncOperation>>")};
 
-            var updatedCode = @"
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Threading.Tasks;
+            var updatedCode = """
+                using System;
+                using System.Collections.Generic;
+                using System.ComponentModel;
+                using System.Threading.Tasks;
 
-class C
-{
-    void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
-}";
+                class C
+                {
+                    void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -86,29 +90,30 @@ void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
         [Fact]
         public async Task AddParameterAddsImportsOnCascading()
         {
-            var markup = @"
-using NS1;
-
-namespace NS1
-{
-    class B
-    {
-        public virtual void M() { }
-    }
-}
-
-namespace NS2
-{
-    using System;
-    using System.Collections.Generic;
-    using System.ComponentModel;
-    using System.Threading.Tasks;
-
-    class D : B
-    {
-        public override void $$M() { }
-    }
-}";
+            var markup = """
+                using NS1;
+
+                namespace NS1
+                {
+                    class B
+                    {
+                        public virtual void M() { }
+                    }
+                }
+
+                namespace NS2
+                {
+                    using System;
+                    using System.Collections.Generic;
+                    using System.ComponentModel;
+                    using System.Threading.Tasks;
+
+                    class D : B
+                    {
+                        public override void $$M() { }
+                    }
+                }
+                """;
 
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(
@@ -119,33 +124,34 @@ class D : B
                         CallSiteKind.Todo),
                     "System.Collections.Generic.Dictionary<System.ConsoleColor, System.Threading.Tasks.Task<System.ComponentModel.AsyncOperation>>")};
 
-            var updatedCode = @"
-using System;
-using System.Collections.Generic;
-using System.ComponentModel;
-using System.Threading.Tasks;
-using NS1;
-
-namespace NS1
-{
-    class B
-    {
-        public virtual void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
-    }
-}
-
-namespace NS2
-{
-    using System;
-    using System.Collections.Generic;
-    using System.ComponentModel;
-    using System.Threading.Tasks;
-
-    class D : B
-    {
-        public override void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
-    }
-}";
+            var updatedCode = """
+                using System;
+                using System.Collections.Generic;
+                using System.ComponentModel;
+                using System.Threading.Tasks;
+                using NS1;
+
+                namespace NS1
+                {
+                    class B
+                    {
+                        public virtual void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
+                    }
+                }
+
+                namespace NS2
+                {
+                    using System;
+                    using System.Collections.Generic;
+                    using System.ComponentModel;
+                    using System.Threading.Tasks;
+
+                    class D : B
+                    {
+                        public override void M(Dictionary<ConsoleColor, Task<AsyncOperation>> test) { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Cascading.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Cascading.cs
index af83a90911389..f3f7e32f335a1 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Cascading.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Cascading.cs
@@ -19,33 +19,35 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task AddParameter_Cascade_ToImplementedMethod()
         {
-            var markup = @"
-interface I
-{
-    void M(int x, string y);
-}
-
-class C : I
-{
-    $$public void M(int x, string y)
-    { }
-}";
+            var markup = """
+                interface I
+                {
+                    void M(int x, string y);
+                }
+
+                class C : I
+                {
+                    $$public void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-interface I
-{
-    void M(string y, int newIntegerParameter, int x);
-}
-
-class C : I
-{
-    public void M(string y, int newIntegerParameter, int x)
-    { }
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, int newIntegerParameter, int x);
+                }
+
+                class C : I
+                {
+                    public void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -53,33 +55,35 @@ public void M(string y, int newIntegerParameter, int x)
         [Fact]
         public async Task AddParameter_Cascade_ToImplementedMethod_WithTuples()
         {
-            var markup = @"
-interface I
-{
-    void M((int, int) x, (string a, string b) y);
-}
-
-class C : I
-{
-    $$public void M((int, int) x, (string a, string b) y)
-    { }
-}";
+            var markup = """
+                interface I
+                {
+                    void M((int, int) x, (string a, string b) y);
+                }
+
+                class C : I
+                {
+                    $$public void M((int, int) x, (string a, string b) y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-interface I
-{
-    void M((string a, string b) y, int newIntegerParameter, (int, int) x);
-}
-
-class C : I
-{
-    public void M((string a, string b) y, int newIntegerParameter, (int, int) x)
-    { }
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M((string a, string b) y, int newIntegerParameter, (int, int) x);
+                }
+
+                class C : I
+                {
+                    public void M((string a, string b) y, int newIntegerParameter, (int, int) x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -87,33 +91,35 @@ public void M((string a, string b) y, int newIntegerParameter, (int, int) x)
         [Fact]
         public async Task AddParameter_Cascade_ToImplementingMethod()
         {
-            var markup = @"
-interface I
-{
-    $$void M(int x, string y);
-}
-
-class C : I
-{
-    public void M(int x, string y)
-    { }
-}";
+            var markup = """
+                interface I
+                {
+                    $$void M(int x, string y);
+                }
+
+                class C : I
+                {
+                    public void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-interface I
-{
-    void M(string y, int newIntegerParameter, int x);
-}
-
-class C : I
-{
-    public void M(string y, int newIntegerParameter, int x)
-    { }
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, int newIntegerParameter, int x);
+                }
+
+                class C : I
+                {
+                    public void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -121,35 +127,37 @@ public void M(string y, int newIntegerParameter, int x)
         [Fact]
         public async Task AddParameter_Cascade_ToOverriddenMethod()
         {
-            var markup = @"
-class B
-{
-    public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    $$public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    $$public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int newIntegerParameter, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int newIntegerParameter, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -157,35 +165,37 @@ public override void M(string y, int newIntegerParameter, int x)
         [Fact]
         public async Task AddParameter_Cascade_ToOverridingMethod()
         {
-            var markup = @"
-class B
-{
-    $$public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    $$public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int newIntegerParameter, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int newIntegerParameter, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -193,47 +203,49 @@ public override void M(string y, int newIntegerParameter, int x)
         [Fact]
         public async Task AddParameter_Cascade_ToOverriddenMethod_Transitive()
         {
-            var markup = @"
-class B
-{
-    public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    public override void M(int x, string y)
-    { }
-}
-
-class D2 : D
-{
-    $$public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    $$public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int newIntegerParameter, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int newIntegerParameter, int x)
-    { }
-}
-
-class D2 : D
-{
-    public override void M(string y, int newIntegerParameter, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    public override void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -241,47 +253,49 @@ public override void M(string y, int newIntegerParameter, int x)
         [Fact]
         public async Task AddParameter_Cascade_ToOverridingMethod_Transitive()
         {
-            var markup = @"
-class B
-{
-    $$public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    public override void M(int x, string y)
-    { }
-}
-
-class D2 : D
-{
-    public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    $$public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int newIntegerParameter, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int newIntegerParameter, int x)
-    { }
-}
-
-class D2 : D
-{
-    public override void M(string y, int newIntegerParameter, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    public override void M(string y, int newIntegerParameter, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -295,30 +309,32 @@ public async Task AddParameter_Cascade_ToMethods_Complex()
             ////      / \   \
             ////   $$D2  D3  C
 
-            var markup = @"
-class B { public virtual void M(int x, string y) { } }
-class D : B, I { public override void M(int x, string y) { } }
-class D2 : D { public override void $$M(int x, string y) { } }
-class D3 : D { public override void M(int x, string y) { } }
-interface I { void M(int x, string y); }
-interface I2 { void M(int x, string y); }
-interface I3 : I, I2 { }
-class C : I3 { public void M(int x, string y) { } }";
+            var markup = """
+                class B { public virtual void M(int x, string y) { } }
+                class D : B, I { public override void M(int x, string y) { } }
+                class D2 : D { public override void $$M(int x, string y) { } }
+                class D3 : D { public override void M(int x, string y) { } }
+                interface I { void M(int x, string y); }
+                interface I2 { void M(int x, string y); }
+                interface I3 : I, I2 { }
+                class C : I3 { public void M(int x, string y) { } }
+                """;
 
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-class B { public virtual void M(string y, int newIntegerParameter, int x) { } }
-class D : B, I { public override void M(string y, int newIntegerParameter, int x) { } }
-class D2 : D { public override void M(string y, int newIntegerParameter, int x) { } }
-class D3 : D { public override void M(string y, int newIntegerParameter, int x) { } }
-interface I { void M(string y, int newIntegerParameter, int x); }
-interface I2 { void M(string y, int newIntegerParameter, int x); }
-interface I3 : I, I2 { }
-class C : I3 { public void M(string y, int newIntegerParameter, int x) { } }";
+            var updatedCode = """
+                class B { public virtual void M(string y, int newIntegerParameter, int x) { } }
+                class D : B, I { public override void M(string y, int newIntegerParameter, int x) { } }
+                class D2 : D { public override void M(string y, int newIntegerParameter, int x) { } }
+                class D3 : D { public override void M(string y, int newIntegerParameter, int x) { } }
+                interface I { void M(string y, int newIntegerParameter, int x); }
+                interface I2 { void M(string y, int newIntegerParameter, int x); }
+                interface I3 : I, I2 { }
+                class C : I3 { public void M(string y, int newIntegerParameter, int x) { } }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -326,110 +342,114 @@ class C : I3 { public void M(string y, int newIntegerParameter, int x) { } }";
         [Fact]
         public async Task AddParameter_Cascade_ToMethods_WithDifferentParameterNames()
         {
-            var markup = @"
-public class B
-{
-    /// <param name=""x""></param>
-    /// <param name=""y""></param>
-    public virtual int M(int x, string y)
-    {
-        return 1;
-    }
-}
-
-public class D : B
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    public override int M(int a, string b)
-    {
-        return 1;
-    }
-}
-
-public class D2 : D
-{
-    /// <param name=""y""></param>
-    /// <param name=""x""></param>
-    public override int $$M(int y, string x)
-    {
-        M(1, ""Two"");
-        ((D)this).M(1, ""Two"");
-        ((B)this).M(1, ""Two"");
-
-        M(1, x: ""Two"");
-        ((D)this).M(1, b: ""Two"");
-        ((B)this).M(1, y: ""Two"");
-
-        return 1;
-    }
-}";
+            var markup = """
+                public class B
+                {
+                    /// <param name="x"></param>
+                    /// <param name="y"></param>
+                    public virtual int M(int x, string y)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D : B
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    public override int M(int a, string b)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D2 : D
+                {
+                    /// <param name="y"></param>
+                    /// <param name="x"></param>
+                    public override int $$M(int y, string x)
+                    {
+                        M(1, "Two");
+                        ((D)this).M(1, "Two");
+                        ((B)this).M(1, "Two");
+
+                        M(1, x: "Two");
+                        ((D)this).M(1, b: "Two");
+                        ((B)this).M(1, y: "Two");
+
+                        return 1;
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(0)
             };
-            var updatedCode = @"
-public class B
-{
-    /// <param name=""y""></param>
-    /// <param name=""newIntegerParameter""></param>
-    /// <param name=""x""></param>
-    public virtual int M(string y, int newIntegerParameter, int x)
-    {
-        return 1;
-    }
-}
-
-public class D : B
-{
-    /// <param name=""b""></param>
-    /// <param name=""newIntegerParameter""></param>
-    /// <param name=""a""></param>
-    public override int M(string b, int newIntegerParameter, int a)
-    {
-        return 1;
-    }
-}
-
-public class D2 : D
-{
-    /// <param name=""x""></param>
-    /// <param name=""newIntegerParameter""></param>
-    /// <param name=""y""></param>
-    public override int M(string x, int newIntegerParameter, int y)
-    {
-        M(""Two"", 12345, 1);
-        ((D)this).M(""Two"", 12345, 1);
-        ((B)this).M(""Two"", 12345, 1);
-
-        M(x: ""Two"", newIntegerParameter: 12345, y: 1);
-        ((D)this).M(b: ""Two"", newIntegerParameter: 12345, a: 1);
-        ((B)this).M(y: ""Two"", newIntegerParameter: 12345, x: 1);
-
-        return 1;
-    }
-}";
+            var updatedCode = """
+                public class B
+                {
+                    /// <param name="y"></param>
+                    /// <param name="newIntegerParameter"></param>
+                    /// <param name="x"></param>
+                    public virtual int M(string y, int newIntegerParameter, int x)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D : B
+                {
+                    /// <param name="b"></param>
+                    /// <param name="newIntegerParameter"></param>
+                    /// <param name="a"></param>
+                    public override int M(string b, int newIntegerParameter, int a)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D2 : D
+                {
+                    /// <param name="x"></param>
+                    /// <param name="newIntegerParameter"></param>
+                    /// <param name="y"></param>
+                    public override int M(string x, int newIntegerParameter, int y)
+                    {
+                        M("Two", 12345, 1);
+                        ((D)this).M("Two", 12345, 1);
+                        ((B)this).M("Two", 12345, 1);
+
+                        M(x: "Two", newIntegerParameter: 12345, y: 1);
+                        ((D)this).M(b: "Two", newIntegerParameter: 12345, a: 1);
+                        ((B)this).M(y: "Two", newIntegerParameter: 12345, x: 1);
+
+                        return 1;
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact(Skip = "https://github.com/dotnet/roslyn/issues/53091")]
         public async Task AddParameter_Cascade_Record()
         {
-            var markup = @"
-record $$BaseR(int A, int B);
+            var markup = """
+                record $$BaseR(int A, int B);
 
-record DerivedR() : BaseR(0, 1);";
+                record DerivedR() : BaseR(0, 1);
+                """;
             var permutation = new AddedParameterOrExistingIndex[]
             {
                 new(1),
                 new(new AddedParameter(null, "int", "C", CallSiteKind.Value, "3"), "int"),
                 new(0)
             };
-            var updatedCode = @"
-record BaseR(int B, int C, int A);
+            var updatedCode = """
+                record BaseR(int B, int C, int A);
 
-record DerivedR() : BaseR(1, 3, 0);";
+                record DerivedR() : BaseR(1, 3, 0);
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -437,20 +457,22 @@ record DerivedR() : BaseR(1, 3, 0);";
         [Fact(Skip = "https://github.com/dotnet/roslyn/issues/53091")]
         public async Task AddParameter_Cascade_PrimaryConstructor()
         {
-            var markup = @"
-class $$BaseR(int A, int B);
+            var markup = """
+                class $$BaseR(int A, int B);
 
-class DerivedR() : BaseR(0, 1);";
+                class DerivedR() : BaseR(0, 1);
+                """;
             var permutation = new AddedParameterOrExistingIndex[]
             {
                 new(1),
                 new(new AddedParameter(null, "int", "C", CallSiteKind.Value, "3"), "int"),
                 new(0)
             };
-            var updatedCode = @"
-class BaseR(int B, int C, int A);
+            var updatedCode = """
+                class BaseR(int B, int C, int A);
 
-class DerivedR() : BaseR(1, 3, 0);";
+                class DerivedR() : BaseR(1, 3, 0);
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Delegates.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Delegates.cs
index 47ca927fcbdaf..12f3e1a8542e9 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Delegates.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.Delegates.cs
@@ -20,33 +20,35 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task AddParameter_Delegates_ImplicitInvokeCalls()
         {
-            var markup = @"
-delegate void MyDelegate($$int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1(1, ""Two"", true);
-    }
-}";
+            var markup = """
+                delegate void MyDelegate($$int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1(1, "Two", true);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1(true, 12345, ""Two"");
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1(true, 12345, "Two");
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 0);
         }
@@ -54,33 +56,35 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task AddParameter_Delegates_ExplicitInvokeCalls()
         {
-            var markup = @"
-delegate void MyDelegate(int x, string $$y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.Invoke(1, ""Two"", true);
-    }
-}";
+            var markup = """
+                delegate void MyDelegate(int x, string $$y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.Invoke(1, "Two", true);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.Invoke(true, 12345, ""Two"");
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.Invoke(true, 12345, "Two");
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 1);
         }
@@ -88,33 +92,35 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task AddParameter_Delegates_BeginInvokeCalls()
         {
-            var markup = @"
-delegate void MyDelegate(int x, string y, bool z$$);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.BeginInvoke(1, ""Two"", true, null, null);
-    }
-}";
+            var markup = """
+                delegate void MyDelegate(int x, string y, bool z$$);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.BeginInvoke(1, "Two", true, null, null);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.BeginInvoke(true, 12345, ""Two"", null, null);
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.BeginInvoke(true, 12345, "Two", null, null);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 2);
         }
@@ -122,691 +128,727 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task AddParameter_Delegates_AnonymousMethods()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = delegate (int e, string f, bool g) { var x = f.Length + (g ? 0 : 1); };
-        d1 = delegate { };
-    }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = delegate (int e, string f, bool g) { var x = f.Length + (g ? 0 : 1); };
+                        d1 = delegate { };
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = delegate (bool g, int newIntegerParameter, string f) { var x = f.Length + (g ? 0 : 1); };
-        d1 = delegate { };
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = delegate (bool g, int newIntegerParameter, string f) { var x = f.Length + (g ? 0 : 1); };
+                        d1 = delegate { };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_Lambdas()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = (r, s, t) => { var x = s.Length + (t ? 0 : 1); };
-    }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = (r, s, t) => { var x = s.Length + (t ? 0 : 1); };
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = (t, newIntegerParameter, s) => { var x = s.Length + (t ? 0 : 1); };
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = (t, newIntegerParameter, s) => { var x = s.Length + (t ? 0 : 1); };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_Lambdas_RemovingOnlyParameterIntroducesParentheses()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = (r) => { System.Console.WriteLine(""Test""); };
-        d1 = r => { System.Console.WriteLine(""Test""); };
-        d1 = r => { System.Console.WriteLine(""Test""); };
-    }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = (r) => { System.Console.WriteLine("Test"); };
+                        d1 = r => { System.Console.WriteLine("Test"); };
+                        d1 = r => { System.Console.WriteLine("Test"); };
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(int newIntegerParameter);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = (newIntegerParameter) => { System.Console.WriteLine(""Test""); };
-        d1 = (int newIntegerParameter) => { System.Console.WriteLine(""Test""); };
-        d1 = (int newIntegerParameter) => { System.Console.WriteLine(""Test""); };
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(int newIntegerParameter);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = (newIntegerParameter) => { System.Console.WriteLine("Test"); };
+                        d1 = (int newIntegerParameter) => { System.Console.WriteLine("Test"); };
+                        d1 = (int newIntegerParameter) => { System.Console.WriteLine("Test"); };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_CascadeThroughMethodGroups_AssignedToVariable()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = Goo;
-        Goo(1, ""Two"", true);
-        Goo(1, false, false);
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = Goo;
+                        Goo(1, "Two", true);
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = Goo;
-        Goo(true, 12345, ""Two"");
-        Goo(1, false, false);
-    }
-
-    void Goo(bool c, int newIntegerParameter, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = Goo;
+                        Goo(true, 12345, "Two");
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(bool c, int newIntegerParameter, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_CascadeThroughMethodGroups_DelegateConstructor()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = new MyDelegate(Goo);
-        Goo(1, ""Two"", true);
-        Goo(1, false, false);
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = new MyDelegate(Goo);
+                        Goo(1, "Two", true);
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = new MyDelegate(Goo);
-        Goo(true, 12345, ""Two"");
-        Goo(1, false, false);
-    }
-
-    void Goo(bool c, int newIntegerParameter, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = new MyDelegate(Goo);
+                        Goo(true, 12345, "Two");
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(bool c, int newIntegerParameter, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_CascadeThroughMethodGroups_PassedAsArgument()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        Target(Goo);
-        Goo(1, ""Two"", true);
-        Goo(1, false, false);
-    }
-
-    void Target(MyDelegate d) { }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        Target(Goo);
+                        Goo(1, "Two", true);
+                        Goo(1, false, false);
+                    }
+
+                    void Target(MyDelegate d) { }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        Target(Goo);
-        Goo(true, 12345, ""Two"");
-        Goo(1, false, false);
-    }
-
-    void Target(MyDelegate d) { }
-
-    void Goo(bool c, int newIntegerParameter, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        Target(Goo);
+                        Goo(true, 12345, "Two");
+                        Goo(1, false, false);
+                    }
+
+                    void Target(MyDelegate d) { }
+
+                    void Goo(bool c, int newIntegerParameter, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_CascadeThroughMethodGroups_ReturnValue()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Result();
-        Goo(1, ""Two"", true);
-    }
-
-    private MyDelegate Result()
-    {
-        return Goo;
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Result();
+                        Goo(1, "Two", true);
+                    }
+
+                    private MyDelegate Result()
+                    {
+                        return Goo;
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Result();
-        Goo(true, 12345, ""Two"");
-    }
-
-    private MyDelegate Result()
-    {
-        return Goo;
-    }
-
-    void Goo(bool c, int newIntegerParameter, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Result();
+                        Goo(true, 12345, "Two");
+                    }
+
+                    private MyDelegate Result()
+                    {
+                        return Goo;
+                    }
+
+                    void Goo(bool c, int newIntegerParameter, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_CascadeThroughMethodGroups_YieldReturnValue()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        Goo(1, ""Two"", true);
-    }
-
-    private IEnumerable<MyDelegate> Result()
-    {
-        yield return Goo;
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        Goo(1, "Two", true);
+                    }
+
+                    private IEnumerable<MyDelegate> Result()
+                    {
+                        yield return Goo;
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-using System.Collections.Generic;
-
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        Goo(true, 12345, ""Two"");
-    }
-
-    private IEnumerable<MyDelegate> Result()
-    {
-        yield return Goo;
-    }
-
-    void Goo(bool c, int newIntegerParameter, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                using System.Collections.Generic;
+
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        Goo(true, 12345, "Two");
+                    }
+
+                    private IEnumerable<MyDelegate> Result()
+                    {
+                        yield return Goo;
+                    }
+
+                    void Goo(bool c, int newIntegerParameter, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_ReferencingLambdas_MethodArgument()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M6()
-    {
-        Target((m, n, o) => { var x = n.Length + (o ? 0 : 1); });
-    }
-
-    void Target(MyDelegate d) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M6()
+                    {
+                        Target((m, n, o) => { var x = n.Length + (o ? 0 : 1); });
+                    }
+
+                    void Target(MyDelegate d) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M6()
-    {
-        Target((o, newIntegerParameter, n) => { var x = n.Length + (o ? 0 : 1); });
-    }
-
-    void Target(MyDelegate d) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M6()
+                    {
+                        Target((o, newIntegerParameter, n) => { var x = n.Length + (o ? 0 : 1); });
+                    }
+
+                    void Target(MyDelegate d) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_ReferencingLambdas_YieldReturn()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-delegate void $$MyDelegate(int x, string y, bool z);
-class C
-{
-    private IEnumerable<MyDelegate> Result3()
-    {
-        yield return (g, h, i) => { var x = h.Length + (i ? 0 : 1); };
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                delegate void $$MyDelegate(int x, string y, bool z);
+                class C
+                {
+                    private IEnumerable<MyDelegate> Result3()
+                    {
+                        yield return (g, h, i) => { var x = h.Length + (i ? 0 : 1); };
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-using System.Collections.Generic;
-
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-class C
-{
-    private IEnumerable<MyDelegate> Result3()
-    {
-        yield return (i, newIntegerParameter, h) => { var x = h.Length + (i ? 0 : 1); };
-    }
-}";
+            var expectedUpdatedCode = """
+                using System.Collections.Generic;
+
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+                class C
+                {
+                    private IEnumerable<MyDelegate> Result3()
+                    {
+                        yield return (i, newIntegerParameter, h) => { var x = h.Length + (i ? 0 : 1); };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_Recursive()
         {
-            var markup = @"
-delegate RecursiveDelegate $$RecursiveDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        RecursiveDelegate rd = null;
-        rd(1, ""Two"", true)(1, ""Two"", true)(1, ""Two"", true)(1, ""Two"", true)(1, ""Two"", true);
-    }
-}";
+            var markup = """
+                delegate RecursiveDelegate $$RecursiveDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        RecursiveDelegate rd = null;
+                        rd(1, "Two", true)(1, "Two", true)(1, "Two", true)(1, "Two", true)(1, "Two", true);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate RecursiveDelegate RecursiveDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        RecursiveDelegate rd = null;
-        rd(true, 12345, ""Two"")(true, 12345, ""Two"")(true, 12345, ""Two"")(true, 12345, ""Two"")(true, 12345, ""Two"");
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate RecursiveDelegate RecursiveDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        RecursiveDelegate rd = null;
+                        rd(true, 12345, "Two")(true, 12345, "Two")(true, 12345, "Two")(true, 12345, "Two")(true, 12345, "Two");
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_DocComments()
         {
-            var markup = @"
-/// <summary>
-/// This is <see cref=""MyDelegate""/>, which has these methods:
-///     <see cref=""MyDelegate.MyDelegate(object, IntPtr)""/>
-///     <see cref=""MyDelegate.Invoke(int, string, bool)""/>
-///     <see cref=""MyDelegate.EndInvoke(IAsyncResult)""/>
-///     <see cref=""MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)""/>
-/// </summary>
-/// <param name=""x"">x!</param>
-/// <param name=""y"">y!</param>
-/// <param name=""z"">z!</param>
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Goo;
-        Goo(1, ""Two"", true);
-    }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo(int a, string b, bool c) { }
-}";
+            var markup = """
+                /// <summary>
+                /// This is <see cref="MyDelegate"/>, which has these methods:
+                ///     <see cref="MyDelegate.MyDelegate(object, IntPtr)"/>
+                ///     <see cref="MyDelegate.Invoke(int, string, bool)"/>
+                ///     <see cref="MyDelegate.EndInvoke(IAsyncResult)"/>
+                ///     <see cref="MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)"/>
+                /// </summary>
+                /// <param name="x">x!</param>
+                /// <param name="y">y!</param>
+                /// <param name="z">z!</param>
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Goo;
+                        Goo(1, "Two", true);
+                    }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo(int a, string b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-/// <summary>
-/// This is <see cref=""MyDelegate""/>, which has these methods:
-///     <see cref=""MyDelegate.MyDelegate(object, IntPtr)""/>
-///     <see cref=""MyDelegate.Invoke(bool, int, string)""/>
-///     <see cref=""MyDelegate.EndInvoke(IAsyncResult)""/>
-///     <see cref=""MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)""/>
-/// </summary>
-/// <param name=""z"">z!</param>
-/// <param name=""newIntegerParameter""></param>
-/// <param name=""y"">y!</param>
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Goo;
-        Goo(true, 12345, ""Two"");
-    }
-
-    /// <param name=""c""></param>
-    /// <param name=""newIntegerParameter""></param>
-    /// <param name=""b""></param>
-    void Goo(bool c, int newIntegerParameter, string b) { }
-}";
+            var expectedUpdatedCode = """
+                /// <summary>
+                /// This is <see cref="MyDelegate"/>, which has these methods:
+                ///     <see cref="MyDelegate.MyDelegate(object, IntPtr)"/>
+                ///     <see cref="MyDelegate.Invoke(bool, int, string)"/>
+                ///     <see cref="MyDelegate.EndInvoke(IAsyncResult)"/>
+                ///     <see cref="MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)"/>
+                /// </summary>
+                /// <param name="z">z!</param>
+                /// <param name="newIntegerParameter"></param>
+                /// <param name="y">y!</param>
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Goo;
+                        Goo(true, 12345, "Two");
+                    }
+
+                    /// <param name="c"></param>
+                    /// <param name="newIntegerParameter"></param>
+                    /// <param name="b"></param>
+                    void Goo(bool c, int newIntegerParameter, string b) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_CascadeThroughEventAdd()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class Program
-{
-    void M()
-    {
-        MyEvent += Program_MyEvent;
-    }
-
-    event MyDelegate MyEvent;
-    void Program_MyEvent(int a, string b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class Program
+                {
+                    void M()
+                    {
+                        MyEvent += Program_MyEvent;
+                    }
+
+                    event MyDelegate MyEvent;
+                    void Program_MyEvent(int a, string b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, int newIntegerParameter, string y);
-
-class Program
-{
-    void M()
-    {
-        MyEvent += Program_MyEvent;
-    }
-
-    event MyDelegate MyEvent;
-    void Program_MyEvent(bool c, int newIntegerParameter, string b) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, int newIntegerParameter, string y);
+
+                class Program
+                {
+                    void M()
+                    {
+                        MyEvent += Program_MyEvent;
+                    }
+
+                    event MyDelegate MyEvent;
+                    void Program_MyEvent(bool c, int newIntegerParameter, string b) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_Generics1()
         {
-            var markup = @"
-public class DP16a
-{
-    public delegate void D<T>($$T t);
-    public event D<int> E1;
-    public event D<int> E2;
-
-    public void M1(int i) { }
-    public void M2(int i) { }
-    public void M3(int i) { }
-
-    void B()
-    {
-        D<int> d = new D<int>(M1);
-        E1 += new D<int>(M2);
-        E2 -= new D<int>(M3);
-    }
-}";
+            var markup = """
+                public class DP16a
+                {
+                    public delegate void D<T>($$T t);
+                    public event D<int> E1;
+                    public event D<int> E2;
+
+                    public void M1(int i) { }
+                    public void M2(int i) { }
+                    public void M3(int i) { }
+
+                    void B()
+                    {
+                        D<int> d = new D<int>(M1);
+                        E1 += new D<int>(M2);
+                        E2 -= new D<int>(M3);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
             };
-            var expectedUpdatedCode = @"
-public class DP16a
-{
-    public delegate void D<T>(int newIntegerParameter);
-    public event D<int> E1;
-    public event D<int> E2;
-
-    public void M1(int newIntegerParameter) { }
-    public void M2(int newIntegerParameter) { }
-    public void M3(int newIntegerParameter) { }
-
-    void B()
-    {
-        D<int> d = new D<int>(M1);
-        E1 += new D<int>(M2);
-        E2 -= new D<int>(M3);
-    }
-}";
+            var expectedUpdatedCode = """
+                public class DP16a
+                {
+                    public delegate void D<T>(int newIntegerParameter);
+                    public event D<int> E1;
+                    public event D<int> E2;
+
+                    public void M1(int newIntegerParameter) { }
+                    public void M2(int newIntegerParameter) { }
+                    public void M3(int newIntegerParameter) { }
+
+                    void B()
+                    {
+                        D<int> d = new D<int>(M1);
+                        E1 += new D<int>(M2);
+                        E2 -= new D<int>(M3);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_Generics2()
         {
-            var markup = @"
-public class D17<T>
-{
-    public delegate void $$D(T t);
-}
-public class D17Test
-{
-    void Test() { var x = new D17<string>.D(M17); }
-    internal void M17(string s) { }
-}";
+            var markup = """
+                public class D17<T>
+                {
+                    public delegate void $$D(T t);
+                }
+                public class D17Test
+                {
+                    void Test() { var x = new D17<string>.D(M17); }
+                    internal void M17(string s) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
             };
-            var expectedUpdatedCode = @"
-public class D17<T>
-{
-    public delegate void D(int newIntegerParameter);
-}
-public class D17Test
-{
-    void Test() { var x = new D17<string>.D(M17); }
-    internal void M17(int newIntegerParameter) { }
-}";
+            var expectedUpdatedCode = """
+                public class D17<T>
+                {
+                    public delegate void D(int newIntegerParameter);
+                }
+                public class D17Test
+                {
+                    void Test() { var x = new D17<string>.D(M17); }
+                    internal void M17(int newIntegerParameter) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_GenericParams()
         {
-            var markup = @"
-class DA
-{
-    void M(params int[] i) { }
-    void B()
-    {
-        DP20<int>.D d = new DP20<int>.D(M);
-        d();
-        d(0);
-        d(0, 1);
-    }
-}
-public class DP20<T>
-{
-    public delegate void $$D(params T[] t);
-    public void M1(params T[] t) { }
-
-    void B()
-    {
-        D d = new D(M1);
-    }
-}";
+            var markup = """
+                class DA
+                {
+                    void M(params int[] i) { }
+                    void B()
+                    {
+                        DP20<int>.D d = new DP20<int>.D(M);
+                        d();
+                        d(0);
+                        d(0, 1);
+                    }
+                }
+                public class DP20<T>
+                {
+                    public delegate void $$D(params T[] t);
+                    public void M1(params T[] t) { }
+
+                    void B()
+                    {
+                        D d = new D(M1);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
             };
-            var expectedUpdatedCode = @"
-class DA
-{
-    void M(int newIntegerParameter) { }
-    void B()
-    {
-        DP20<int>.D d = new DP20<int>.D(M);
-        d(12345);
-        d(12345);
-        d(12345);
-    }
-}
-public class DP20<T>
-{
-    public delegate void D(int newIntegerParameter);
-    public void M1(int newIntegerParameter) { }
-
-    void B()
-    {
-        D d = new D(M1);
-    }
-}";
+            var expectedUpdatedCode = """
+                class DA
+                {
+                    void M(int newIntegerParameter) { }
+                    void B()
+                    {
+                        DP20<int>.D d = new DP20<int>.D(M);
+                        d(12345);
+                        d(12345);
+                        d(12345);
+                    }
+                }
+                public class DP20<T>
+                {
+                    public delegate void D(int newIntegerParameter);
+                    public void M1(int newIntegerParameter) { }
+
+                    void B()
+                    {
+                        D d = new D(M1);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task AddParameter_Delegates_Generic_RemoveArgumentAtReference()
         {
-            var markup = @"public class CD<T>
-{
-    public delegate void D(T t);
-}
-class Test
-{
-    public void M()
-    {
-        var dele = new CD<int>.$$D((int x) => { });
-    }
-}";
+            var markup = """
+                public class CD<T>
+                {
+                    public delegate void D(T t);
+                }
+                class Test
+                {
+                    public void M()
+                    {
+                        var dele = new CD<int>.$$D((int x) => { });
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int")
             };
-            var expectedUpdatedCode = @"public class CD<T>
-{
-    public delegate void D(int newIntegerParameter);
-}
-class Test
-{
-    public void M()
-    {
-        var dele = new CD<int>.D((int newIntegerParameter) => { });
-    }
-}";
+            var expectedUpdatedCode = """
+                public class CD<T>
+                {
+                    public delegate void D(int newIntegerParameter);
+                }
+                class Test
+                {
+                    public void M()
+                    {
+                        var dele = new CD<int>.D((int newIntegerParameter) => { });
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 0);
         }
@@ -814,90 +856,94 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task AddParameter_Delegate_Generics_RemoveStaticArgument()
         {
-            var markup = @"
-public class C2<T>
-{
-    public delegate void D(T t);
-}
-
-public class D2
-{
-    public static D2 Instance = null;
-    void M(D2 m) { }
-
-    void B()
-    {
-        C2<D2>.D d = new C2<D2>.D(M);
-        $$d(D2.Instance);
-    }
-}";
+            var markup = """
+                public class C2<T>
+                {
+                    public delegate void D(T t);
+                }
+
+                public class D2
+                {
+                    public static D2 Instance = null;
+                    void M(D2 m) { }
+
+                    void B()
+                    {
+                        C2<D2>.D d = new C2<D2>.D(M);
+                        $$d(D2.Instance);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int")
             };
-            var expectedUpdatedCode = @"
-public class C2<T>
-{
-    public delegate void D(int newIntegerParameter);
-}
-
-public class D2
-{
-    public static D2 Instance = null;
-    void M(int newIntegerParameter) { }
-
-    void B()
-    {
-        C2<D2>.D d = new C2<D2>.D(M);
-        d(12345);
-    }
-}";
+            var expectedUpdatedCode = """
+                public class C2<T>
+                {
+                    public delegate void D(int newIntegerParameter);
+                }
+
+                public class D2
+                {
+                    public static D2 Instance = null;
+                    void M(int newIntegerParameter) { }
+
+                    void B()
+                    {
+                        C2<D2>.D d = new C2<D2>.D(M);
+                        d(12345);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task TestAddParameter_Delegates_Relaxation_ParameterlessFunctionToFunction()
         {
-            var markup = @"
-class C0
-{
-    delegate int $$MyFunc(int x, string y, bool z);
-
-    class C
-    {
-        public void M()
-        {
-            MyFunc f = Test();
-        }
-
-        private MyFunc Test()
-        {
-            return null;
-        }
-    }
-}";
+            var markup = """
+                class C0
+                {
+                    delegate int $$MyFunc(int x, string y, bool z);
+
+                    class C
+                    {
+                        public void M()
+                        {
+                            MyFunc f = Test();
+                        }
+
+                        private MyFunc Test()
+                        {
+                            return null;
+                        }
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "int"),
                 new AddedParameterOrExistingIndex(1)
             };
-            var expectedUpdatedCode = @"
-class C0
-{
-    delegate int MyFunc(bool z, int newIntegerParameter, string y);
-
-    class C
-    {
-        public void M()
-        {
-            MyFunc f = Test();
-        }
-
-        private MyFunc Test()
-        {
-            return null;
-        }
-    }
-}";
+            var expectedUpdatedCode = """
+                class C0
+                {
+                    delegate int MyFunc(bool z, int newIntegerParameter, string y);
+
+                    class C
+                    {
+                        public void M()
+                        {
+                            MyFunc f = Test();
+                        }
+
+                        private MyFunc Test()
+                        {
+                            return null;
+                        }
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Infer.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Infer.cs
index 02f718bb10cd9..e99d7548855bf 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Infer.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Infer.cs
@@ -20,24 +20,26 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_NoOptions()
         {
-            var markup = @"
-class C
-{
-    void M$$()
-    {
-        M();
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$()
+                    {
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class C
-{
-    void M(int a)
-    {
-        M(TODO);
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int a)
+                    {
+                        M(TODO);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -45,26 +47,28 @@ void M(int a)
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_SingleLocal()
         {
-            var markup = @"
-class C
-{
-    void M$$()
-    {
-        int x = 7;
-        M();
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$()
+                    {
+                        int x = 7;
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class C
-{
-    void M(int a)
-    {
-        int x = 7;
-        M(x);
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int a)
+                    {
+                        int x = 7;
+                        M(x);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -72,26 +76,28 @@ void M(int a)
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_NotOnInaccessibleLocal()
         {
-            var markup = @"
-class C
-{
-    void M$$()
-    {
-        M();
-        int x = 7;
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$()
+                    {
+                        M();
+                        int x = 7;
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class C
-{
-    void M(int a)
-    {
-        M(TODO);
-        int x = 7;
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int a)
+                    {
+                        M(TODO);
+                        int x = 7;
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -99,28 +105,30 @@ void M(int a)
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_MultipleLocals()
         {
-            var markup = @"
-class C
-{
-    void M$$()
-    {
-        int x = 7;
-        int y = 8;
-        M();
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$()
+                    {
+                        int x = 7;
+                        int y = 8;
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class C
-{
-    void M(int a)
-    {
-        int x = 7;
-        int y = 8;
-        M(y);
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int a)
+                    {
+                        int x = 7;
+                        int y = 8;
+                        M(y);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -128,25 +136,27 @@ void M(int a)
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_SingleParameter()
         {
-            var markup = @"
-class C
-{
-    void M$$(int x)
-    {
-        M(1);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$(int x)
+                    {
+                        M(1);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class C
-{
-    void M(int x, int a)
-    {
-        M(1, x);
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int x, int a)
+                    {
+                        M(1, x);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -154,28 +164,30 @@ void M(int x, int a)
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_SingleField()
         {
-            var markup = @"
-class C
-{
-    int x = 8;
+            var markup = """
+                class C
+                {
+                    int x = 8;
 
-    void M$$()
-    {
-        M();
-    }
-}";
+                    void M$$()
+                    {
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class C
-{
-    int x = 8;
+            var updatedCode = """
+                class C
+                {
+                    int x = 8;
 
-    void M(int a)
-    {
-        M(x);
-    }
-}";
+                    void M(int a)
+                    {
+                        M(x);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -183,28 +195,30 @@ void M(int a)
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_SingleProperty()
         {
-            var markup = @"
-class C
-{
-    int X { get; set; }
+            var markup = """
+                class C
+                {
+                    int X { get; set; }
 
-    void M$$()
-    {
-        M();
-    }
-}";
+                    void M$$()
+                    {
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class C
-{
-    int X { get; set; }
+            var updatedCode = """
+                class C
+                {
+                    int X { get; set; }
 
-    void M(int a)
-    {
-        M(X);
-    }
-}";
+                    void M(int a)
+                    {
+                        M(X);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -212,32 +226,34 @@ void M(int a)
         [Fact]
         public async Task AddOptionalParameter_CallsiteInferred_ImplicitlyConvertable()
         {
-            var markup = @"
-class B { }
-class D : B { }
+            var markup = """
+                class B { }
+                class D : B { }
 
-class C
-{
-    void M$$()
-    {
-        D d = null;
-        M();
-    }
-}";
+                class C
+                {
+                    void M$$()
+                    {
+                        D d = null;
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("B", "b", CallSiteKind.Inferred) };
-            var updatedCode = @"
-class B { }
-class D : B { }
+            var updatedCode = """
+                class B { }
+                class D : B { }
 
-class C
-{
-    void M(B b)
-    {
-        D d = null;
-        M(d);
-    }
-}";
+                class C
+                {
+                    void M(B b)
+                    {
+                        D d = null;
+                        M(d);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Omit.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Omit.cs
index 25c59ec92cfed..3b4207da9baea 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Omit.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.Omit.cs
@@ -20,24 +20,26 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [WpfFact]
         public async Task AddOptionalParameter_ToEmptySignature_CallsiteOmitted()
         {
-            var markup = @"
-class C
-{
-    void M$$()
-    {
-        M();
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$()
+                    {
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Omitted, isRequired: false, defaultValue: "1") };
-            var updatedCode = @"
-class C
-{
-    void M(int a = 1)
-    {
-        M();
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int a = 1)
+                    {
+                        M();
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -45,25 +47,27 @@ void M(int a = 1)
         [WpfFact]
         public async Task AddOptionalParameter_AfterRequiredParameter_CallsiteOmitted()
         {
-            var markup = @"
-class C
-{
-    void M$$(int x)
-    {
-        M(1);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$(int x)
+                    {
+                        M(1);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Omitted, isRequired: false, defaultValue: "1") };
-            var updatedCode = @"
-class C
-{
-    void M(int x, int a = 1)
-    {
-        M(1);
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int x, int a = 1)
+                    {
+                        M(1);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -71,29 +75,31 @@ void M(int x, int a = 1)
         [WpfFact]
         public async Task AddOptionalParameter_BeforeOptionalParameter_CallsiteOmitted()
         {
-            var markup = @"
-class C
-{
-    void M$$(int x = 2)
-    {
-        M()
-        M(2);
-        M(x: 2);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$(int x = 2)
+                    {
+                        M()
+                        M(2);
+                        M(x: 2);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Omitted, isRequired: false, defaultValue: "1"),
                 new AddedParameterOrExistingIndex(0) };
-            var updatedCode = @"
-class C
-{
-    void M(int a = 1, int x = 2)
-    {
-        M()
-        M(x: 2);
-        M(x: 2);
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int a = 1, int x = 2)
+                    {
+                        M()
+                        M(x: 2);
+                        M(x: 2);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -101,31 +107,33 @@ void M(int a = 1, int x = 2)
         [WpfFact]
         public async Task AddOptionalParameter_BeforeExpandedParamsArray_CallsiteOmitted()
         {
-            var markup = @"
-class C
-{
-    void M$$(params int[] p)
-    {
-        M();
-        M(1);
-        M(1, 2);
-        M(1, 2, 3);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M$$(params int[] p)
+                    {
+                        M();
+                        M(1);
+                        M(1, 2);
+                        M(1, 2, 3);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "a", CallSiteKind.Omitted, isRequired: false, defaultValue: "1"),
                 new AddedParameterOrExistingIndex(0) };
-            var updatedCode = @"
-class C
-{
-    void M(int a = 1, params int[] p)
-    {
-        M();
-        M(p: new int[] { 1 });
-        M(p: new int[] { 1, 2 });
-        M(p: new int[] { 1, 2, 3 });
-    }
-}";
+            var updatedCode = """
+                class C
+                {
+                    void M(int a = 1, params int[] p)
+                    {
+                        M();
+                        M(p: new int[] { 1 });
+                        M(p: new int[] { 1, 2 });
+                        M(p: new int[] { 1, 2, 3 });
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -133,27 +141,29 @@ void M(int a = 1, params int[] p)
         [WpfFact]
         public async Task AddOptionalParameterWithOmittedCallsiteToAttributeConstructor()
         {
-            var markup = @"
-[Some(1, 2, 4)]
-class SomeAttribute : System.Attribute
-{
-    public SomeAttribute$$(int a, int b, int y = 4)
-    {
-    }
-}";
+            var markup = """
+                [Some(1, 2, 4)]
+                class SomeAttribute : System.Attribute
+                {
+                    public SomeAttribute$$(int a, int b, int y = 4)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(1),
                 AddedParameterOrExistingIndex.CreateAdded("int", "x", CallSiteKind.Omitted, isRequired: false, defaultValue: "3"),
                 new AddedParameterOrExistingIndex(2)};
-            var updatedCode = @"
-[Some(1, 2, y: 4)]
-class SomeAttribute : System.Attribute
-{
-    public SomeAttribute(int a, int b, int x = 3, int y = 4)
-    {
-    }
-}";
+            var updatedCode = """
+                [Some(1, 2, y: 4)]
+                class SomeAttribute : System.Attribute
+                {
+                    public SomeAttribute(int a, int b, int x = 3, int y = 4)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.SymbolKinds.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.SymbolKinds.cs
index 464f8669e4ced..f431ba64cd03e 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.SymbolKinds.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.OptionalParameter.SymbolKinds.cs
@@ -20,39 +20,41 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [WpfFact]
         public async Task AddOptionalParameter_ToConstructor()
         {
-            var markup = @"
-class B
-{
-    public B() : this(1) { }
-    public B$$(int a)
-    {
-        var q = new B(1);
-    }
-}
-
-class D : B
-{
-    public D() : base(1) { }
-}";
+            var markup = """
+                class B
+                {
+                    public B() : this(1) { }
+                    public B$$(int a)
+                    {
+                        var q = new B(1);
+                    }
+                }
+
+                class D : B
+                {
+                    public D() : base(1) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "x", CallSiteKind.Value, callSiteValue: "100", isRequired: false, defaultValue: "10"),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "y", CallSiteKind.Omitted, isRequired: false, defaultValue: "11"),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "z", CallSiteKind.Value, callSiteValue: "102", isRequired: false, defaultValue: "12")};
-            var updatedCode = @"
-class B
-{
-    public B() : this(1, 100, z: 102) { }
-    public B(int a, int x = 10, int y = 11, int z = 12)
-    {
-        var q = new B(1, 100, z: 102);
-    }
-}
-
-class D : B
-{
-    public D() : base(1, 100, z: 102) { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public B() : this(1, 100, z: 102) { }
+                    public B(int a, int x = 10, int y = 11, int z = 12)
+                    {
+                        var q = new B(1, 100, z: 102);
+                    }
+                }
+
+                class D : B
+                {
+                    public D() : base(1, 100, z: 102) { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -61,39 +63,41 @@ public D() : base(1, 100, z: 102) { }
         [WpfFact]
         public async Task AddOptionalParameter_ToConstructor_ImplicitObjectCreation()
         {
-            var markup = @"
-class B
-{
-    public B() : this(1) { }
-    public B$$(int a)
-    {
-        B q = new(1);
-    }
-}
-
-class D : B
-{
-    public D() : base(1) { }
-}";
+            var markup = """
+                class B
+                {
+                    public B() : this(1) { }
+                    public B$$(int a)
+                    {
+                        B q = new(1);
+                    }
+                }
+
+                class D : B
+                {
+                    public D() : base(1) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "x", CallSiteKind.Value, callSiteValue: "100", isRequired: false, defaultValue: "10"),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "y", CallSiteKind.Omitted, isRequired: false, defaultValue: "11"),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "z", CallSiteKind.Value, callSiteValue: "102", isRequired: false, defaultValue: "12")};
-            var updatedCode = @"
-class B
-{
-    public B() : this(1, 100, z: 102) { }
-    public B(int a, int x = 10, int y = 11, int z = 12)
-    {
-        B q = new(1, 100, z: 102);
-    }
-}
-
-class D : B
-{
-    public D() : base(1, 100, z: 102) { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public B() : this(1, 100, z: 102) { }
+                    public B(int a, int x = 10, int y = 11, int z = 12)
+                    {
+                        B q = new(1, 100, z: 102);
+                    }
+                }
+
+                class D : B
+                {
+                    public D() : base(1, 100, z: 102) { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -101,31 +105,33 @@ public D() : base(1, 100, z: 102) { }
         [WpfFact]
         public async Task AddOptionalParameter_ToIndexer()
         {
-            var markup = @"
-class B
-{
-    public int this$$[int a] { get { return 5; } }
-
-    public void M()
-    {
-        var d = this[1];
-    }
-}";
+            var markup = """
+                class B
+                {
+                    public int this$$[int a] { get { return 5; } }
+
+                    public void M()
+                    {
+                        var d = this[1];
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "x", CallSiteKind.Value, callSiteValue: "100", isRequired: false, defaultValue: "10"),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "y", CallSiteKind.Omitted, isRequired: false, defaultValue: "11"),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "z", CallSiteKind.Value, callSiteValue: "102", isRequired: false, defaultValue: "12")};
-            var updatedCode = @"
-class B
-{
-    public int this[int a, int x = 10, int y = 11, int z = 12] { get { return 5; } }
-
-    public void M()
-    {
-        var d = this[1, 100, z: 102];
-    }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public int this[int a, int x = 10, int y = 11, int z = 12] { get { return 5; } }
+
+                    public void M()
+                    {
+                        var d = this[1, 100, z: 102];
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -133,12 +139,13 @@ public void M()
         [WpfFact]
         public async Task AddOptionalParameter_ToAttribute()
         {
-            var markup = @"
-[My(1)]
-class MyAttribute : System.Attribute
-{
-    public MyAttribute($$int a) { }
-}";
+            var markup = """
+                [My(1)]
+                class MyAttribute : System.Attribute
+                {
+                    public MyAttribute($$int a) { }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
                 AddedParameterOrExistingIndex.CreateAdded("System.Int32", "x", CallSiteKind.Value, callSiteValue: "100", isRequired: false, defaultValue: "10"),
@@ -147,12 +154,13 @@ public MyAttribute($$int a) { }
 
             // TODO: The = in the attribute is a bug. You cannot specify that the attribute should use : instead in the SyntaxGenerator
             // https://github.com/dotnet/roslyn/issues/43354
-            var updatedCode = @"
-[My(1, 100, z = 102)]
-class MyAttribute : System.Attribute
-{
-    public MyAttribute(int a, int x = 10, int y = 11, int z = 12) { }
-}";
+            var updatedCode = """
+                [My(1, 100, z = 102)]
+                class MyAttribute : System.Attribute
+                {
+                    public MyAttribute(int a, int x = 10, int y = 11, int z = 12) { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.cs
index acdaf1dc2ad42..26cacb7863980 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/AddParameterTests.cs
@@ -20,94 +20,96 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task AddParameters()
         {
-            var markup = @"
-static class Ext
-{
-    /// <summary>
-    /// This is a summary of <see cref=""M(object, int, string, bool, int, string, int[])""/>
-    /// </summary>
-    /// <param name=""o""></param>
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""x""></param>
-    /// <param name=""y""></param>
-    /// <param name=""p""></param>
-    static void $$M(this object o, int a, string b, bool c, int x = 0, string y = ""Zero"", params int[] p)
-    {
-        object t = new object();
-
-        M(t, 1, ""two"", true, 3, ""four"", new[] { 5, 6 });
-        M(t, 1, ""two"", true, 3, ""four"", 5, 6);
-        t.M(1, ""two"", true, 3, ""four"", new[] { 5, 6 });
-        t.M(1, ""two"", true, 3, ""four"", 5, 6);
-
-        M(t, 1, ""two"", true, 3, ""four"");
-        M(t, 1, ""two"", true, 3);
-        M(t, 1, ""two"", true);
-
-        M(t, 1, ""two"", c: true);
-        M(t, 1, ""two"", true, 3, y: ""four"");
-
-        M(t, 1, ""two"", true, 3, p: new[] { 5 });
-        M(t, 1, ""two"", true, p: new[] { 5 });
-        M(t, 1, ""two"", true, y: ""four"");
-        M(t, 1, ""two"", true, x: 3);
-
-        M(t, 1, ""two"", true, y: ""four"", x: 3);
-        M(t, 1, y: ""four"", x: 3, b: ""two"", c: true);
-        M(t, y: ""four"", x: 3, c: true, b: ""two"", a: 1);
-        M(t, p: new[] { 5 }, y: ""four"", x: 3, c: true, b: ""two"", a: 1);
-        M(p: new[] { 5 }, y: ""four"", x: 3, c: true, b: ""two"", a: 1, o: t);
-    }
-}";
+            var markup = """
+                static class Ext
+                {
+                    /// <summary>
+                    /// This is a summary of <see cref="M(object, int, string, bool, int, string, int[])"/>
+                    /// </summary>
+                    /// <param name="o"></param>
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="x"></param>
+                    /// <param name="y"></param>
+                    /// <param name="p"></param>
+                    static void $$M(this object o, int a, string b, bool c, int x = 0, string y = "Zero", params int[] p)
+                    {
+                        object t = new object();
+
+                        M(t, 1, "two", true, 3, "four", new[] { 5, 6 });
+                        M(t, 1, "two", true, 3, "four", 5, 6);
+                        t.M(1, "two", true, 3, "four", new[] { 5, 6 });
+                        t.M(1, "two", true, 3, "four", 5, 6);
+
+                        M(t, 1, "two", true, 3, "four");
+                        M(t, 1, "two", true, 3);
+                        M(t, 1, "two", true);
+
+                        M(t, 1, "two", c: true);
+                        M(t, 1, "two", true, 3, y: "four");
+
+                        M(t, 1, "two", true, 3, p: new[] { 5 });
+                        M(t, 1, "two", true, p: new[] { 5 });
+                        M(t, 1, "two", true, y: "four");
+                        M(t, 1, "two", true, x: 3);
+
+                        M(t, 1, "two", true, y: "four", x: 3);
+                        M(t, 1, y: "four", x: 3, b: "two", c: true);
+                        M(t, y: "four", x: 3, c: true, b: "two", a: 1);
+                        M(t, p: new[] { 5 }, y: "four", x: 3, c: true, b: "two", a: 1);
+                        M(p: new[] { 5 }, y: "four", x: 3, c: true, b: "two", a: 1, o: t);
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "System.Int32"),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "string", "newString", CallSiteKind.Value, ""), "System.String"),
                 new AddedParameterOrExistingIndex(5)};
-            var updatedCode = @"
-static class Ext
-{
-    /// <summary>
-    /// This is a summary of <see cref=""M(object, string, int, string, string)""/>
-    /// </summary>
-    /// <param name=""o""></param>
-    /// <param name=""b""></param>
-    /// <param name=""newIntegerParameter""></param>
-    /// <param name=""newString""></param>
-    /// <param name=""y""></param>
-    /// 
-    /// 
-    static void M(this object o, string b, int newIntegerParameter, string newString, string y = ""Zero"")
-    {
-        object t = new object();
-
-        M(t, ""two"", 12345, , ""four"");
-        M(t, ""two"", 12345, , ""four"");
-        t.M(""two"", 12345, , ""four"");
-        t.M(""two"", 12345, , ""four"");
-
-        M(t, ""two"", 12345, , ""four"");
-        M(t, ""two"", 12345, );
-        M(t, ""two"", 12345, );
-
-        M(t, ""two"", 12345, );
-        M(t, ""two"", 12345, , y: ""four"");
-
-        M(t, ""two"", 12345, );
-        M(t, ""two"", 12345, );
-        M(t, ""two"", 12345, , y: ""four"");
-        M(t, ""two"", 12345, );
-
-        M(t, ""two"", 12345, , y: ""four"");
-        M(t, y: ""four"", newIntegerParameter: 12345, newString:, b: ""two"");
-        M(t, y: ""four"", newIntegerParameter: 12345, newString:, b: ""two"");
-        M(t, y: ""four"", newIntegerParameter: 12345, newString:, b: ""two"");
-        M(y: ""four"", b: ""two"", newIntegerParameter: 12345, newString:, o: t);
-    }
-}";
+            var updatedCode = """
+                static class Ext
+                {
+                    /// <summary>
+                    /// This is a summary of <see cref="M(object, string, int, string, string)"/>
+                    /// </summary>
+                    /// <param name="o"></param>
+                    /// <param name="b"></param>
+                    /// <param name="newIntegerParameter"></param>
+                    /// <param name="newString"></param>
+                    /// <param name="y"></param>
+                    /// 
+                    /// 
+                    static void M(this object o, string b, int newIntegerParameter, string newString, string y = "Zero")
+                    {
+                        object t = new object();
+
+                        M(t, "two", 12345, , "four");
+                        M(t, "two", 12345, , "four");
+                        t.M("two", 12345, , "four");
+                        t.M("two", 12345, , "four");
+
+                        M(t, "two", 12345, , "four");
+                        M(t, "two", 12345, );
+                        M(t, "two", 12345, );
+
+                        M(t, "two", 12345, );
+                        M(t, "two", 12345, , y: "four");
+
+                        M(t, "two", 12345, );
+                        M(t, "two", 12345, );
+                        M(t, "two", 12345, , y: "four");
+                        M(t, "two", 12345, );
+
+                        M(t, "two", 12345, , y: "four");
+                        M(t, y: "four", newIntegerParameter: 12345, newString:, b: "two");
+                        M(t, y: "four", newIntegerParameter: 12345, newString:, b: "two");
+                        M(t, y: "four", newIntegerParameter: 12345, newString:, b: "two");
+                        M(y: "four", b: "two", newIntegerParameter: 12345, newString:, o: t);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -115,24 +117,26 @@ static void M(this object o, string b, int newIntegerParameter, string newString
         [Fact]
         public async Task AddParameterToParameterlessMethod()
         {
-            var markup = @"
-static class Ext
-{
-    static void $$M()
-    {
-        M();
-    }
-}";
+            var markup = """
+                static class Ext
+                {
+                    static void $$M()
+                    {
+                        M();
+                    }
+                }
+                """;
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "int", "newIntegerParameter", CallSiteKind.Value, "12345"), "System.Int32")};
-            var updatedCode = @"
-static class Ext
-{
-    static void M(int newIntegerParameter)
-    {
-        M(12345);
-    }
-}";
+            var updatedCode = """
+                static class Ext
+                {
+                    static void M(int newIntegerParameter)
+                    {
+                        M(12345);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -140,34 +144,36 @@ static void M(int newIntegerParameter)
         [Fact]
         public async Task AddAndReorderLocalFunctionParametersAndArguments_OnDeclaration()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        Goo(1, 2);
-        void $$Goo(int x, string y)
-        {
-        }
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        Goo(1, 2);
+                        void $$Goo(int x, string y)
+                        {
+                        }
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        Goo(2, 34, 1);
-        void Goo(string y, byte b, int x)
-        {
-        }
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        Goo(2, 34, 1);
+                        void Goo(string y, byte b, int x)
+                        {
+                        }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -175,34 +181,36 @@ void Goo(string y, byte b, int x)
         [Fact]
         public async Task AddAndReorderLocalFunctionParametersAndArguments_OnInvocation()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        $$Goo(1, null);
-        void Goo(int x, string y)
-        {
-        }
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        $$Goo(1, null);
+                        void Goo(int x, string y)
+                        {
+                        }
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        Goo(null, 34, 1);
-        void Goo(string y, byte b, int x)
-        {
-        }
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        Goo(null, 34, 1);
+                        void Goo(string y, byte b, int x)
+                        {
+                        }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -210,26 +218,28 @@ void Goo(string y, byte b, int x)
         [Fact]
         public async Task AddAndReorderMethodParameters()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void $$Goo(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void $$Goo(int x, string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, byte b, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, byte b, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -237,28 +247,30 @@ public void Goo(string y, byte b, int x)
         [Fact]
         public async Task AddAndReorderMethodParametersAndArguments()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void $$Goo(int x, string y)
-    {
-        Goo(3, ""hello"");
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void $$Goo(int x, string y)
+                    {
+                        Goo(3, "hello");
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, byte b, int x)
-    {
-        Goo(""hello"", 34, 3);
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, byte b, int x)
+                    {
+                        Goo("hello", 34, 3);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -266,28 +278,30 @@ public void Goo(string y, byte b, int x)
         [Fact]
         public async Task AddAndReorderMethodParametersAndArgumentsOfNestedCalls()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public int $$Goo(int x, string y)
-    {
-        return Goo(Goo(4, ""inner""), ""outer"");
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public int $$Goo(int x, string y)
+                    {
+                        return Goo(Goo(4, "inner"), "outer");
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public int Goo(string y, byte b, int x)
-    {
-        return Goo(""outer"", 34, Goo(""inner"", 34, 4));
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public int Goo(string y, byte b, int x)
+                    {
+                        return Goo("outer", 34, Goo("inner", 34, 4));
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -295,52 +309,54 @@ public int Goo(string y, byte b, int x)
         [Fact]
         public async Task AddAndReorderConstructorParametersAndArguments()
         {
-            var markup = @"
-using System;
-
-class MyClass2 : MyClass
-{
-    public MyClass2() : base(5, ""test2"")
-    {
-    }
-}
-
-class MyClass
-{
-    public MyClass() : this(2, ""test"")
-    {
-    }
-
-    public $$MyClass(int x, string y)
-    {
-        var t = new MyClass(x, y);
-    }
-}";
+            var markup = """
+                using System;
+
+                class MyClass2 : MyClass
+                {
+                    public MyClass2() : base(5, "test2")
+                    {
+                    }
+                }
+
+                class MyClass
+                {
+                    public MyClass() : this(2, "test")
+                    {
+                    }
+
+                    public $$MyClass(int x, string y)
+                    {
+                        var t = new MyClass(x, y);
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 AddedParameterOrExistingIndex.CreateAdded("byte", "b", CallSiteKind.Value, "34"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-using System;
-
-class MyClass2 : MyClass
-{
-    public MyClass2() : base(""test2"", 34, 5)
-    {
-    }
-}
-
-class MyClass
-{
-    public MyClass() : this(""test"", 34, 2)
-    {
-    }
-
-    public MyClass(string y, byte b, int x)
-    {
-        var t = new MyClass(y, 34, x);
-    }
-}";
+            var updatedCode = """
+                using System;
+
+                class MyClass2 : MyClass
+                {
+                    public MyClass2() : base("test2", 34, 5)
+                    {
+                    }
+                }
+
+                class MyClass
+                {
+                    public MyClass() : this("test", 34, 2)
+                    {
+                    }
+
+                    public MyClass(string y, byte b, int x)
+                    {
+                        var t = new MyClass(y, 34, x);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -348,34 +364,36 @@ public MyClass(string y, byte b, int x)
         [Fact]
         public async Task AddAndReorderAttributeConstructorParametersAndArguments()
         {
-            var markup = @"
-[My(""test"", 8)]
-class MyClass
-{
-}
-
-class MyAttribute : System.Attribute
-{
-    public MyAttribute(string x, int y)$$
-    {
-    }
-}";
+            var markup = """
+                [My("test", 8)]
+                class MyClass
+                {
+                }
+
+                class MyAttribute : System.Attribute
+                {
+                    public MyAttribute(string x, int y)$$
+                    {
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-[My(8, 34, ""test"")]
-class MyClass
-{
-}
-
-class MyAttribute : System.Attribute
-{
-    public MyAttribute(int y, byte b, string x)
-    {
-    }
-}";
+            var updatedCode = """
+                [My(8, 34, "test")]
+                class MyClass
+                {
+                }
+
+                class MyAttribute : System.Attribute
+                {
+                    public MyAttribute(int y, byte b, string x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -383,20 +401,21 @@ public MyAttribute(int y, byte b, string x)
         [Fact]
         public async Task AddAndReorderExtensionMethodParametersAndArguments_StaticCall()
         {
-            var markup = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 1, 2, ""three"", ""four"", ""five"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this $$C goo, int x, int y, string a = ""test_a"", string b = ""test_b"", string c = ""test_c"")
-    { }
-}";
+            var markup = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 1, 2, "three", "four", "five");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this $$C goo, int x, int y, string a = "test_a", string b = "test_b", string c = "test_c")
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(2),
@@ -406,20 +425,21 @@ public static void M(this $$C goo, int x, int y, string a = ""test_a"", string b
                 new AddedParameterOrExistingIndex(4),
                 new AddedParameterOrExistingIndex(3)};
 
-            var updatedCode = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 2, 1, 34, ""five"", ""four"", ""three"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int y, int x, byte b, string c = ""test_c"", string b = ""test_b"", string a = ""test_a"")
-    { }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 2, 1, 34, "five", "four", "three");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int y, int x, byte b, string c = "test_c", string b = "test_b", string a = "test_a")
+                    { }
+                }
+                """;
 
             // Although the `ParameterConfig` has 0 for the `SelectedIndex`, the UI dialog will make an adjustment
             // and select parameter `y` instead because the `this` parameter cannot be moved or removed.
@@ -430,20 +450,21 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task AddAndReorderExtensionMethodParametersAndArguments_ExtensionCall()
         {
-            var markup = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        new C().M(1, 2, ""three"", ""four"", ""five"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int x$$, int y, string a = ""test_a"", string b = ""test_b"", string c = ""test_c"")
-    { }
-}";
+            var markup = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        new C().M(1, 2, "three", "four", "five");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int x$$, int y, string a = "test_a", string b = "test_b", string c = "test_c")
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(2),
@@ -452,20 +473,21 @@ public static void M(this C goo, int x$$, int y, string a = ""test_a"", string b
                 new AddedParameterOrExistingIndex(5),
                 new AddedParameterOrExistingIndex(4),
                 new AddedParameterOrExistingIndex(3)};
-            var updatedCode = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        new C().M(2, 1, 34, ""five"", ""four"", ""three"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int y, int x, byte b, string c = ""test_c"", string b = ""test_b"", string a = ""test_a"")
-    { }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        new C().M(2, 1, 34, "five", "four", "three");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int y, int x, byte b, string c = "test_c", string b = "test_b", string a = "test_a")
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 1);
@@ -474,27 +496,29 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task AddParameterWithOmittedArgument_ParamsAsArray()
         {
-            var markup = @"
-public class C
-{
-    void $$M(int x, int y, params int[] p)
-    {
-        M(x, y, p: p);
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    void $$M(int x, int y, params int[] p)
+                    {
+                        M(x, y, p: p);
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(1),
                 AddedParameterOrExistingIndex.CreateAdded("int", "z", CallSiteKind.Omitted, isRequired: false, defaultValue: "3"),
                 new AddedParameterOrExistingIndex(2)};
-            var updatedCode = @"
-public class C
-{
-    void M(int x, int y, int z = 3, params int[] p)
-    {
-        M(x, y, p: p);
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    void M(int x, int y, int z = 3, params int[] p)
+                    {
+                        M(x, y, p: p);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -502,27 +526,29 @@ void M(int x, int y, int z = 3, params int[] p)
         [Fact]
         public async Task AddAndReorderParamsMethodParametersAndArguments_ParamsAsArray()
         {
-            var markup = @"
-public class C
-{
-    void $$M(int x, int y, params int[] p)
-    {
-        M(x, y, new[] { 1, 2, 3 });
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    void $$M(int x, int y, params int[] p)
+                    {
+                        M(x, y, new[] { 1, 2, 3 });
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(2)};
-            var updatedCode = @"
-public class C
-{
-    void M(int y, int x, byte b, params int[] p)
-    {
-        M(y, x, 34, new[] { 1, 2, 3 });
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    void M(int y, int x, byte b, params int[] p)
+                    {
+                        M(y, x, 34, new[] { 1, 2, 3 });
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -530,28 +556,30 @@ void M(int y, int x, byte b, params int[] p)
         [Fact]
         public async Task AddAndReorderParamsMethodParametersAndArguments_ParamsExpanded()
         {
-            var markup = @"
-public class C
-{
-    void $$M(int x, int y, params int[] p)
-    {
-        M(x, y, 1, 2, 3);
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    void $$M(int x, int y, params int[] p)
+                    {
+                        M(x, y, 1, 2, 3);
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(2)};
 
-            var updatedCode = @"
-public class C
-{
-    void M(int y, int x, byte b, params int[] p)
-    {
-        M(y, x, 34, 1, 2, 3);
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    void M(int y, int x, byte b, params int[] p)
+                    {
+                        M(y, x, 34, 1, 2, 3);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -559,23 +587,24 @@ void M(int y, int x, byte b, params int[] p)
         [Fact]
         public async Task AddAndReorderExtensionAndParamsMethodParametersAndArguments_VariedCallsites()
         {
-            var markup = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 1, 2, ""three"", ""four"", ""five"", new[] { 6, 7, 8 });
-        CExt.M(new C(), 1, 2, ""three"", ""four"", ""five"", 6, 7, 8);
-        new C().M(1, 2, ""three"", ""four"", ""five"", new[] { 6, 7, 8 });
-        new C().M(1, 2, ""three"", ""four"", ""five"", 6, 7, 8);
-    }
-}
-
-public static class CExt
-{
-    public static void $$M(this C goo, int x, int y, string a = ""test_a"", string b = ""test_b"", string c = ""test_c"", params int[] p)
-    { }
-}";
+            var markup = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 1, 2, "three", "four", "five", new[] { 6, 7, 8 });
+                        CExt.M(new C(), 1, 2, "three", "four", "five", 6, 7, 8);
+                        new C().M(1, 2, "three", "four", "five", new[] { 6, 7, 8 });
+                        new C().M(1, 2, "three", "four", "five", 6, 7, 8);
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void $$M(this C goo, int x, int y, string a = "test_a", string b = "test_b", string c = "test_c", params int[] p)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(0),
                 new AddedParameterOrExistingIndex(2),
@@ -585,23 +614,24 @@ public static class CExt
                 new AddedParameterOrExistingIndex(4),
                 new AddedParameterOrExistingIndex(3),
                 new AddedParameterOrExistingIndex(6)};
-            var updatedCode = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 2, 1, 34, ""five"", ""four"", ""three"", new[] { 6, 7, 8 });
-        CExt.M(new C(), 2, 1, 34, ""five"", ""four"", ""three"", 6, 7, 8);
-        new C().M(2, 1, 34, ""five"", ""four"", ""three"", new[] { 6, 7, 8 });
-        new C().M(2, 1, 34, ""five"", ""four"", ""three"", 6, 7, 8);
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int y, int x, byte b, string c = ""test_c"", string b = ""test_b"", string a = ""test_a"", params int[] p)
-    { }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 2, 1, 34, "five", "four", "three", new[] { 6, 7, 8 });
+                        CExt.M(new C(), 2, 1, 34, "five", "four", "three", 6, 7, 8);
+                        new C().M(2, 1, 34, "five", "four", "three", new[] { 6, 7, 8 });
+                        new C().M(2, 1, 34, "five", "four", "three", 6, 7, 8);
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int y, int x, byte b, string c = "test_c", string b = "test_b", string a = "test_a", params int[] p)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 0);
@@ -610,40 +640,42 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task AddAndReorderIndexerParametersAndArguments()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        var x = new Program()[1, 2];
-        new Program()[1, 2] = x;
-    }
-
-    public int this[int x, int y]$$
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        var x = new Program()[1, 2];
+                        new Program()[1, 2] = x;
+                    }
+
+                    public int this[int x, int y]$$
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-class Program
-{
-    void M()
-    {
-        var x = new Program()[2, 34, 1];
-        new Program()[2, 34, 1] = x;
-    }
-
-    public int this[int y, byte b, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    void M()
+                    {
+                        var x = new Program()[2, 34, 1];
+                        new Program()[2, 34, 1] = x;
+                    }
+
+                    public int this[int y, byte b, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -651,34 +683,36 @@ void M()
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_SingleLineDocComments_OnIndividualLines()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "bb", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    /// <param name=""bb""></param>
-    /// <param name=""a""></param>
-    void Goo(int c, int b, byte bb, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    /// <param name="bb"></param>
+                    /// <param name="a"></param>
+                    void Goo(int c, int b, byte bb, int a)
+                    {
+
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -686,30 +720,32 @@ void Goo(int c, int b, byte bb, int a)
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_SingleLineDocComments_OnSameLine()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a"">a is fun</param><param name=""b"">b is fun</param><param name=""c"">c is fun</param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a">a is fun</param><param name="b">b is fun</param><param name="c">c is fun</param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "bb", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c"">c is fun</param><param name=""b"">b is fun</param><param name=""bb""></param>
-    /// <param name=""a"">a is fun</param>
-    void Goo(int c, int b, byte bb, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c">c is fun</param><param name="b">b is fun</param><param name="bb"></param>
+                    /// <param name="a">a is fun</param>
+                    void Goo(int c, int b, byte bb, int a)
+                    {
+
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -717,20 +753,21 @@ void Goo(int c, int b, byte bb, int a)
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_SingleLineDocComments_MixedLineDistribution()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param><param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""d""></param>
-    /// <param name=""e"">Comments spread
-    /// over several
-    /// lines</param><param name=""f""></param>
-    void $$Goo(int a, int b, int c, int d, int e, int f)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param><param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="d"></param>
+                    /// <param name="e">Comments spread
+                    /// over several
+                    /// lines</param><param name="f"></param>
+                    void $$Goo(int a, int b, int c, int d, int e, int f)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(5),
                 new AddedParameterOrExistingIndex(4),
@@ -739,21 +776,22 @@ public class C
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "bb", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""f""></param><param name=""e"">Comments spread
-    /// over several
-    /// lines</param>
-    /// <param name=""d""></param>
-    /// <param name=""c""></param>
-    /// <param name=""bb""></param><param name=""b""></param>
-    /// <param name=""a""></param>
-    void Goo(int f, int e, int d, int c, byte bb, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="f"></param><param name="e">Comments spread
+                    /// over several
+                    /// lines</param>
+                    /// <param name="d"></param>
+                    /// <param name="c"></param>
+                    /// <param name="bb"></param><param name="b"></param>
+                    /// <param name="a"></param>
+                    void Goo(int f, int e, int d, int c, byte bb, int b, int a)
+                    {
+
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -761,17 +799,18 @@ void Goo(int f, int e, int d, int c, byte bb, int b, int a)
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_SingleLineDocComments_MixedWithRegularComments()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param><param name=""b""></param>
-    // Why is there a regular comment here?
-    /// <param name=""c""></param><param name=""d""></param><param name=""e""></param>
-    void $$Goo(int a, int b, int c, int d, int e)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param><param name="b"></param>
+                    // Why is there a regular comment here?
+                    /// <param name="c"></param><param name="d"></param><param name="e"></param>
+                    void $$Goo(int a, int b, int c, int d, int e)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(4),
                 new AddedParameterOrExistingIndex(3),
@@ -779,18 +818,19 @@ public class C
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""e""></param><param name=""d""></param>
-    // Why is there a regular comment here?
-    /// <param name=""c""></param><param name=""b""></param><param name=""b""></param>
-    /// <param name=""a""></param>
-    void Goo(int e, int d, int c, byte b, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="e"></param><param name="d"></param>
+                    // Why is there a regular comment here?
+                    /// <param name="c"></param><param name="b"></param><param name="b"></param>
+                    /// <param name="a"></param>
+                    void Goo(int e, int d, int c, byte b, int b, int a)
+                    {
+
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -798,36 +838,38 @@ void Goo(int e, int d, int c, byte b, int b, int a)
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_MultiLineDocComments_OnSeparateLines1()
         {
-            var markup = @"
-class Program
-{
-    /**
-     * <param name=""x"">x!</param>
-     * <param name=""y"">y!</param>
-     * <param name=""z"">z!</param>
-     */
-    static void $$M(int x, int y, int z)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    /**
+                     * <param name="x">x!</param>
+                     * <param name="y">y!</param>
+                     * <param name="z">z!</param>
+                     */
+                    static void $$M(int x, int y, int z)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-class Program
-{
-    /**
-     * <param name=""z"">z!</param>
-     * <param name=""b""></param>
-     * <param name=""y"">y!</param>
-     */
-    /// <param name=""x"">x!</param>
-    static void M(int z, byte b, int y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    /**
+                     * <param name="z">z!</param>
+                     * <param name="b"></param>
+                     * <param name="y">y!</param>
+                     */
+                    /// <param name="x">x!</param>
+                    static void M(int z, byte b, int y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -835,28 +877,30 @@ static void M(int z, byte b, int y, int x)
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_MultiLineDocComments_OnSingleLine()
         {
-            var markup = @"
-class Program
-{
-    /** <param name=""x"">x!</param><param name=""y"">y!</param><param name=""z"">z!</param> */
-    static void $$M(int x, int y, int z)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    /** <param name="x">x!</param><param name="y">y!</param><param name="z">z!</param> */
+                    static void $$M(int x, int y, int z)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-class Program
-{
-    /** <param name=""z"">z!</param><param name=""b""></param><param name=""y"">y!</param> */
-    /// <param name=""x"">x!</param>
-    static void M(int z, byte b, int y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    /** <param name="z">z!</param><param name="b"></param><param name="y">y!</param> */
+                    /// <param name="x">x!</param>
+                    static void M(int z, byte b, int y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -864,230 +908,244 @@ static void M(int z, byte b, int y, int x)
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_IncorrectOrder_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "bb", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    void Goo(int c, byte bb, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    void Goo(int c, byte bb, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_WrongNames_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a2""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a2"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a2""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo(int c, byte b, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a2"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo(int c, byte b, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_InsufficientTags_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    void Goo(int c, byte b, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    void Goo(int c, byte b, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_ExcessiveTags_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""d""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="d"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "bb", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""d""></param>
-    void Goo(int c, byte bb, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="d"></param>
+                    void Goo(int c, byte bb, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_OnConstructors()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    public $$C(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    public $$C(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "bb", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c""></param>
-    /// <param name=""bb""></param>
-    /// <param name=""b""></param>
-    /// <param name=""a""></param>
-    public C(int c, byte bb, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c"></param>
+                    /// <param name="bb"></param>
+                    /// <param name="b"></param>
+                    /// <param name="a"></param>
+                    public C(int c, byte bb, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task AddAndReorderParamTagsInDocComments_OnIndexers()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    public int $$this[int a, int b, int c]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    public int $$this[int a, int b, int c]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(2),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "bb", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c""></param>
-    /// <param name=""bb""></param>
-    /// <param name=""b""></param>
-    /// <param name=""a""></param>
-    public int this[int c, byte bb, int b, int a]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c"></param>
+                    /// <param name="bb"></param>
+                    /// <param name="b"></param>
+                    /// <param name="a"></param>
+                    public int this[int c, byte bb, int b, int a]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task AddAndReorderParametersInCrefs()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// See <see cref=""M(int, string)""/> and <see cref=""M""/>
-    /// </summary>
-    $$void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// See <see cref="M(int, string)"/> and <see cref="M"/>
+                    /// </summary>
+                    $$void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-class C
-{
-    /// <summary>
-    /// See <see cref=""M(string, byte, int)""/> and <see cref=""M""/>
-    /// </summary>
-    void M(string y, byte b, int x)
-    { }
-}";
+            var updatedCode = """
+                class C
+                {
+                    /// <summary>
+                    /// See <see cref="M(string, byte, int)"/> and <see cref="M"/>
+                    /// </summary>
+                    void M(string y, byte b, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -1095,42 +1153,44 @@ void M(string y, byte b, int x)
         [Fact]
         public async Task AddAndReorderParametersInMethodThatImplementsInterfaceMethodOnlyThroughADerivedType1()
         {
-            var markup = @"
-interface I
-{
-    $$void M(int x, string y);
-}
-
-class C
-{
-    public void M(int x, string y)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var markup = """
+                interface I
+                {
+                    $$void M(int x, string y);
+                }
+
+                class C
+                {
+                    public void M(int x, string y)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-interface I
-{
-    void M(string y, byte b, int x);
-}
-
-class C
-{
-    public void M(string y, byte b, int x)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, byte b, int x);
+                }
+
+                class C
+                {
+                    public void M(string y, byte b, int x)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -1138,42 +1198,44 @@ class D : C, I
         [Fact]
         public async Task AddAndReorderParametersInMethodThatImplementsInterfaceMethodOnlyThroughADerivedType2()
         {
-            var markup = @"
-interface I
-{
-    void M(int x, string y);
-}
-
-class C
-{
-    $$public void M(int x, string y)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var markup = """
+                interface I
+                {
+                    void M(int x, string y);
+                }
+
+                class C
+                {
+                    $$public void M(int x, string y)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-interface I
-{
-    void M(string y, byte b, int x);
-}
-
-class C
-{
-    public void M(string y, byte b, int x)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, byte b, int x);
+                }
+
+                class C
+                {
+                    public void M(string y, byte b, int x)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -1181,46 +1243,48 @@ class D : C, I
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/43664")]
         public async Task AddParameterOnUnparenthesizedLambda()
         {
-            var markup = @"
-using System.Linq;
-
-namespace ConsoleApp426
-{
-    class Program
-    {
-        static void M(string[] args)
-        {
-            if (args.All(b$$ => Test()))
-            {
-
-            }
-        }
-
-        static bool Test() { return true; }
-    }
-}";
+            var markup = """
+                using System.Linq;
+
+                namespace ConsoleApp426
+                {
+                    class Program
+                    {
+                        static void M(string[] args)
+                        {
+                            if (args.All(b$$ => Test()))
+                            {
+
+                            }
+                        }
+
+                        static bool Test() { return true; }
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(0),
                 AddedParameterOrExistingIndex.CreateAdded("byte", "bb", CallSiteKind.Value, callSiteValue: "34") };
 
-            var updatedCode = @"
-using System.Linq;
+            var updatedCode = """
+                using System.Linq;
 
-namespace ConsoleApp426
-{
-    class Program
-    {
-        static void M(string[] args)
-        {
-            if (args.All((b, byte bb) => Test()))
-            {
+                namespace ConsoleApp426
+                {
+                    class Program
+                    {
+                        static void M(string[] args)
+                        {
+                            if (args.All((b, byte bb) => Test()))
+                            {
 
-            }
-        }
+                            }
+                        }
 
-        static bool Test() { return true; }
-    }
-}";
+                        static bool Test() { return true; }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -1228,51 +1292,53 @@ static void M(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44126")]
         public async Task AddAndReorderImplicitObjectCreationParameter()
         {
-            var markup = @"
-using System;
-class C
-{
-    $$C(int x, string y)
-    {
-    }
-
-    public void M()
-    {
-        C _ = new(1, ""y"");
-    }
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    $$C(int x, string y)
+                    {
+                    }
+
+                    public void M()
+                    {
+                        C _ = new(1, "y");
+                    }
+                }
+                """;
             var permutation = new[] {
                 new AddedParameterOrExistingIndex(1),
                 new AddedParameterOrExistingIndex(new AddedParameter(null, "byte", "b", CallSiteKind.Value, callSiteValue: "34"), "byte"),
                 new AddedParameterOrExistingIndex(0)};
-            var updatedCode = @"
-using System;
-class C
-{
-    C(string y, byte b, int x)
-    {
-    }
-
-    public void M()
-    {
-        C _ = new(""y"", 34, 1);
-    }
-}";
+            var updatedCode = """
+                using System;
+                class C
+                {
+                    C(string y, byte b, int x)
+                    {
+                    }
+
+                    public void M()
+                    {
+                        C _ = new("y", 34, 1);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44558")]
         public async Task AddParameters_Record()
         {
-            var markup = @"
-/// <param name=""First""></param>
-/// <param name=""Second""></param>
-/// <param name=""Third""></param>
-record $$R(int First, int Second, int Third)
-{
-    static R M() => new R(1, 2, 3);
-}
-";
+            var markup = """
+                /// <param name="First"></param>
+                /// <param name="Second"></param>
+                /// <param name="Third"></param>
+                record $$R(int First, int Second, int Third)
+                {
+                    static R M() => new R(1, 2, 3);
+                }
+                """;
             var updatedSignature = new AddedParameterOrExistingIndex[]
             {
                 new(0),
@@ -1280,16 +1346,16 @@ record $$R(int First, int Second, int Third)
                 new(1),
                 new(new AddedParameter(null, "int", "Forth", CallSiteKind.Value, "12345"), "System.Int32")
             };
-            var updatedCode = @"
-/// <param name=""First""></param>
-/// <param name=""Third""></param>
-/// <param name=""Second""></param>
-/// <param name=""Forth""></param>
-record R(int First, int Third, int Second, int Forth)
-{
-    static R M() => new R(1, 3, 2, 12345);
-}
-";
+            var updatedCode = """
+                /// <param name="First"></param>
+                /// <param name="Third"></param>
+                /// <param name="Second"></param>
+                /// <param name="Forth"></param>
+                record R(int First, int Third, int Second, int Forth)
+                {
+                    static R M() => new R(1, 3, 2, 12345);
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -1297,15 +1363,15 @@ record R(int First, int Third, int Second, int Forth)
         [Fact]
         public async Task AddParameters_PrimaryConstructor_Class()
         {
-            var markup = @"
-/// <param name=""First""></param>
-/// <param name=""Second""></param>
-/// <param name=""Third""></param>
-class $$R(int First, int Second, int Third)
-{
-    static R M() => new R(1, 2, 3);
-}
-";
+            var markup = """
+                /// <param name="First"></param>
+                /// <param name="Second"></param>
+                /// <param name="Third"></param>
+                class $$R(int First, int Second, int Third)
+                {
+                    static R M() => new R(1, 2, 3);
+                }
+                """;
             var updatedSignature = new AddedParameterOrExistingIndex[]
             {
                 new(0),
@@ -1313,16 +1379,16 @@ class $$R(int First, int Second, int Third)
                 new(1),
                 new(new AddedParameter(null, "int", "Forth", CallSiteKind.Value, "12345"), "System.Int32")
             };
-            var updatedCode = @"
-/// <param name=""First""></param>
-/// <param name=""Third""></param>
-/// <param name=""Second""></param>
-/// <param name=""Forth""></param>
-class R(int First, int Third, int Second, int Forth)
-{
-    static R M() => new R(1, 3, 2, 12345);
-}
-";
+            var updatedCode = """
+                /// <param name="First"></param>
+                /// <param name="Third"></param>
+                /// <param name="Second"></param>
+                /// <param name="Forth"></param>
+                class R(int First, int Third, int Second, int Forth)
+                {
+                    static R M() => new R(1, 3, 2, 12345);
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -1330,15 +1396,15 @@ class R(int First, int Third, int Second, int Forth)
         [Fact]
         public async Task AddParameters_PrimaryConstructor_Struct()
         {
-            var markup = @"
-/// <param name=""First""></param>
-/// <param name=""Second""></param>
-/// <param name=""Third""></param>
-struct $$R(int First, int Second, int Third)
-{
-    static R M() => new R(1, 2, 3);
-}
-";
+            var markup = """
+                /// <param name="First"></param>
+                /// <param name="Second"></param>
+                /// <param name="Third"></param>
+                struct $$R(int First, int Second, int Third)
+                {
+                    static R M() => new R(1, 2, 3);
+                }
+                """;
             var updatedSignature = new AddedParameterOrExistingIndex[]
             {
                 new(0),
@@ -1346,16 +1412,16 @@ struct $$R(int First, int Second, int Third)
                 new(1),
                 new(new AddedParameter(null, "int", "Forth", CallSiteKind.Value, "12345"), "System.Int32")
             };
-            var updatedCode = @"
-/// <param name=""First""></param>
-/// <param name=""Third""></param>
-/// <param name=""Second""></param>
-/// <param name=""Forth""></param>
-struct R(int First, int Third, int Second, int Forth)
-{
-    static R M() => new R(1, 3, 2, 12345);
-}
-";
+            var updatedCode = """
+                /// <param name="First"></param>
+                /// <param name="Third"></param>
+                /// <param name="Second"></param>
+                /// <param name="Forth"></param>
+                struct R(int First, int Third, int Second, int Forth)
+                {
+                    static R M() => new R(1, 3, 2, 12345);
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignatureTests.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignatureTests.cs
index 0aa708e7d3a0a..bb92dc075eb2f 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignatureTests.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignatureTests.cs
@@ -18,11 +18,12 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8333")]
         public async Task TestNotInExpressionBody()
         {
-            var markup = @"
-class Ext
-{
-    void Goo(int a, int b) => [||]0;
-}";
+            var markup = """
+                class Ext
+                {
+                    void Goo(int a, int b) => [||]0;
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -30,32 +31,34 @@ class Ext
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/1905")]
         public async Task TestAfterSemicolonForInvocationInExpressionStatement_ViaCommand()
         {
-            var markup = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        M1(1, 2);$$
-        M2(1, 2, 3);
-    }
-
-    static void M1(int x, int y) { }
-
-    static void M2(int x, int y, int z) { }
-}";
-            var expectedCode = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        M1(2, 1);
-        M2(1, 2, 3);
-    }
-
-    static void M1(int y, int x) { }
-
-    static void M2(int x, int y, int z) { }
-}";
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        M1(1, 2);$$
+                        M2(1, 2, 3);
+                    }
+
+                    static void M1(int x, int y) { }
+
+                    static void M2(int x, int y, int z) { }
+                }
+                """;
+            var expectedCode = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        M1(2, 1);
+                        M2(1, 2, 3);
+                    }
+
+                    static void M1(int y, int x) { }
+
+                    static void M2(int x, int y, int z) { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(
                 LanguageNames.CSharp,
@@ -67,22 +70,24 @@ await TestChangeSignatureViaCommandAsync(
         [Fact]
         public async Task TestOnLambdaWithTwoDiscardParameters_ViaCommand()
         {
-            var markup = @"
-class Program
-{
-    static void M()
-    {
-        System.Func<int, string, int> f = $$(int _, string _) => 1;
-    }
-}";
-            var expectedCode = @"
-class Program
-{
-    static void M()
-    {
-        System.Func<int, string, int> f = (string _, int _) => 1;
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    static void M()
+                    {
+                        System.Func<int, string, int> f = $$(int _, string _) => 1;
+                    }
+                }
+                """;
+            var expectedCode = """
+                class Program
+                {
+                    static void M()
+                    {
+                        System.Func<int, string, int> f = (string _, int _) => 1;
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(
                 LanguageNames.CSharp,
@@ -94,47 +99,50 @@ await TestChangeSignatureViaCommandAsync(
         [Fact]
         public async Task TestOnAnonymousMethodWithTwoParameters_ViaCommand()
         {
-            var markup = @"
-class Program
-{
-    static void M()
-    {
-        System.Func<int, string, int> f = [||]delegate(int x, string y) { return 1; };
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    static void M()
+                    {
+                        System.Func<int, string, int> f = [||]delegate(int x, string y) { return 1; };
+                    }
+                }
+                """;
             await TestMissingAsync(markup);
         }
 
         [Fact]
         public async Task TestOnAnonymousMethodWithTwoDiscardParameters_ViaCommand()
         {
-            var markup = @"
-class Program
-{
-    static void M()
-    {
-        System.Func<int, string, int> f = [||]delegate(int _, string _) { return 1; };
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    static void M()
+                    {
+                        System.Func<int, string, int> f = [||]delegate(int _, string _) { return 1; };
+                    }
+                }
+                """;
             await TestMissingAsync(markup);
         }
 
         [Fact]
         public async Task TestAfterSemicolonForInvocationInExpressionStatement_ViaCodeAction()
         {
-            var markup = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        M1(1, 2);[||]
-        M2(1, 2, 3);
-    }
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        M1(1, 2);[||]
+                        M2(1, 2, 3);
+                    }
 
-    static void M1(int x, int y) { }
+                    static void M1(int x, int y) { }
 
-    static void M2(int x, int y, int z) { }
-}";
+                    static void M2(int x, int y, int z) { }
+                }
+                """;
 
             await TestMissingAsync(markup);
         }
@@ -142,14 +150,15 @@ static void M2(int x, int y, int z) { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingWhitespace()
         {
-            var markup = @"
-class Ext
-{
-    [||]
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    [||]
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -157,14 +166,15 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingTrivia()
         {
-            var markup = @"
-class Ext
-{
-    // [||]
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    // [||]
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -172,14 +182,15 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingTrivia2()
         {
-            var markup = @"
-class Ext
-{
-    [||]//
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    [||]//
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -187,14 +198,15 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingDocComment()
         {
-            var markup = @"
-class Ext
-{
-    /// [||]
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    /// [||]
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -202,14 +214,15 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingDocComment2()
         {
-            var markup = @"
-class Ext
-{
-    [||]///
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    [||]///
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -217,14 +230,15 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingAttributes1()
         {
-            var markup = @"
-class Ext
-{
-    [||][X]
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    [||][X]
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -232,14 +246,15 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingAttributes2()
         {
-            var markup = @"
-class Ext
-{
-    [[||]X]
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    [[||]X]
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -247,14 +262,15 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInLeadingAttributes3()
         {
-            var markup = @"
-class Ext
-{
-    [X][||]
-    void Goo(int a, int b)
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    [X][||]
+                    void Goo(int a, int b)
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
@@ -262,13 +278,14 @@ void Goo(int a, int b)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17309")]
         public async Task TestNotInConstraints()
         {
-            var markup = @"
-class Ext
-{
-    void Goo<T>(int a, int b) where [||]T : class
-    {
-    };
-}";
+            var markup = """
+                class Ext
+                {
+                    void Goo<T>(int a, int b) where [||]T : class
+                    {
+                    };
+                }
+                """;
 
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_CheckAllSignatureChanges.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_CheckAllSignatureChanges.cs
index ca5e498c94d63..863abae8fd43d 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_CheckAllSignatureChanges.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_CheckAllSignatureChanges.cs
@@ -24,47 +24,48 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
 #pragma warning restore xUnit1019
         public async Task TestAllSignatureChanges_1This_3Regular_2Default_1Params(int totalParameters, int[] signature)
         {
-            var markup = @"
-static class Ext
-{
-    /// <summary>
-    /// This is a summary of <see cref=""M(object, int, string, bool, int, string, int[])""/>
-    /// </summary>
-    /// <param name=""o""></param>
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""x""></param>
-    /// <param name=""y""></param>
-    /// <param name=""p""></param>
-    static void $$M(this object o, int a, string b, bool c, int x = 0, string y = ""Zero"", params int[] p)
-    {
-        object t = new object();
-
-        M(t, 1, ""two"", true, 3, ""four"", new[] { 5, 6 });
-        M(t, 1, ""two"", true, 3, ""four"", 5, 6);
-        t.M(1, ""two"", true, 3, ""four"", new[] { 5, 6 });
-        t.M(1, ""two"", true, 3, ""four"", 5, 6);
-
-        M(t, 1, ""two"", true, 3, ""four"");
-        M(t, 1, ""two"", true, 3);
-        M(t, 1, ""two"", true);
-
-        M(t, 1, ""two"", c: true);
-        M(t, 1, ""two"", true, 3, y: ""four"");
-
-        M(t, 1, ""two"", true, 3, p: new[] { 5 });
-        M(t, 1, ""two"", true, p: new[] { 5 });
-        M(t, 1, ""two"", true, y: ""four"");
-        M(t, 1, ""two"", true, x: 3);
-
-        M(t, 1, ""two"", true, y: ""four"", x: 3);
-        M(t, 1, y: ""four"", x: 3, b: ""two"", c: true);
-        M(t, y: ""four"", x: 3, c: true, b: ""two"", a: 1);
-        M(t, p: new[] { 5 }, y: ""four"", x: 3, c: true, b: ""two"", a: 1);
-        M(p: new[] { 5 }, y: ""four"", x: 3, c: true, b: ""two"", a: 1, o: t);
-    }
-}";
+            var markup = """
+                static class Ext
+                {
+                    /// <summary>
+                    /// This is a summary of <see cref="M(object, int, string, bool, int, string, int[])"/>
+                    /// </summary>
+                    /// <param name="o"></param>
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="x"></param>
+                    /// <param name="y"></param>
+                    /// <param name="p"></param>
+                    static void $$M(this object o, int a, string b, bool c, int x = 0, string y = "Zero", params int[] p)
+                    {
+                        object t = new object();
+
+                        M(t, 1, "two", true, 3, "four", new[] { 5, 6 });
+                        M(t, 1, "two", true, 3, "four", 5, 6);
+                        t.M(1, "two", true, 3, "four", new[] { 5, 6 });
+                        t.M(1, "two", true, 3, "four", 5, 6);
+
+                        M(t, 1, "two", true, 3, "four");
+                        M(t, 1, "two", true, 3);
+                        M(t, 1, "two", true);
+
+                        M(t, 1, "two", c: true);
+                        M(t, 1, "two", true, 3, y: "four");
+
+                        M(t, 1, "two", true, 3, p: new[] { 5 });
+                        M(t, 1, "two", true, p: new[] { 5 });
+                        M(t, 1, "two", true, y: "four");
+                        M(t, 1, "two", true, x: 3);
+
+                        M(t, 1, "two", true, y: "four", x: 3);
+                        M(t, 1, y: "four", x: 3, b: "two", c: true);
+                        M(t, y: "four", x: 3, c: true, b: "two", a: 1);
+                        M(t, p: new[] { 5 }, y: "four", x: 3, c: true, b: "two", a: 1);
+                        M(p: new[] { 5 }, y: "four", x: 3, c: true, b: "two", a: 1, o: t);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(
                 LanguageNames.CSharp,
@@ -83,93 +84,94 @@ await TestChangeSignatureViaCommandAsync(
 #pragma warning restore xUnit1019
         public async Task TestAllSignatureChanges_OnDelegate_3Regular(int totalParameters, int[] signature)
         {
-            var markup = @"
-using System;
-using System.Collections.Generic;
-using System.Linq;
-
-/// <summary>
-/// This is <see cref=""MyDelegate""/>, which has these methods:
-///     <see cref=""MyDelegate.MyDelegate(object, IntPtr)""/>
-///     <see cref=""MyDelegate.Invoke(int, string, bool)""/>
-///     <see cref=""MyDelegate.EndInvoke(IAsyncResult)""/>
-///     <see cref=""MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)""/>
-/// </summary>
-/// <param name=""x"">x!</param>
-/// <param name=""y"">y!</param>
-/// <param name=""z"">z!</param>
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-
-        // Inline updates
-        d1(1, ""Two"", true);
-        d1.Invoke(1, ""Two"", true);
-        // d1.BeginInvoke(1, ""Two"", null, null);
-        d1.EndInvoke(null);
-        d1 = delegate (int e, string f, bool g) { var x = e + (g ? f.Length : 0); };
-        d1 = delegate { };
-        d1 = (r, s, t) => { var x = r + (t ? s.Length : 0); };
-
-        // Cascade through method groups
-        d1 = Goo1;
-        d1 = new MyDelegate(Goo2);
-        Target(Goo3);
-        Target((m, n, o) => { var x = m + (o ? n.Length : 0); });
-        d1 = Result();
-        d1 = Result2().First();
-        d1 = Result3().First();
-
-        // And references to those methods
-        Goo1(1, ""Two"", true);
-        Goo2(1, ""Two"", true);
-        Goo2(1, false, false); // shouldn't change
-        Goo3(1, ""Two"", true);
-        Goo4(1, ""Two"", true);
-        Goo5(1, ""Two"", true);
-    }
-
-    private MyDelegate Result() { return Goo4; }
-    private IEnumerable<MyDelegate> Result2() { yield return Goo5; }
-    private IEnumerable<MyDelegate> Result3() { yield return (g, h, i) => { var x = g + (i ? h.Length : 0); }; }
-
-    void Target(MyDelegate d) { }
-    void TargetTakesAction(Action<int, string> a) { }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo1(int a, string b, bool c) { }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo2(int a, string b, bool c) { }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo2(int a, object b, bool c) { }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo3(int a, string b, bool c) { }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo4(int a, string b, bool c) { }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo5(int a, string b, bool c) { }
-}";
+            var markup = """
+                using System;
+                using System.Collections.Generic;
+                using System.Linq;
+
+                /// <summary>
+                /// This is <see cref="MyDelegate"/>, which has these methods:
+                ///     <see cref="MyDelegate.MyDelegate(object, IntPtr)"/>
+                ///     <see cref="MyDelegate.Invoke(int, string, bool)"/>
+                ///     <see cref="MyDelegate.EndInvoke(IAsyncResult)"/>
+                ///     <see cref="MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)"/>
+                /// </summary>
+                /// <param name="x">x!</param>
+                /// <param name="y">y!</param>
+                /// <param name="z">z!</param>
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+
+                        // Inline updates
+                        d1(1, "Two", true);
+                        d1.Invoke(1, "Two", true);
+                        // d1.BeginInvoke(1, "Two", null, null);
+                        d1.EndInvoke(null);
+                        d1 = delegate (int e, string f, bool g) { var x = e + (g ? f.Length : 0); };
+                        d1 = delegate { };
+                        d1 = (r, s, t) => { var x = r + (t ? s.Length : 0); };
+
+                        // Cascade through method groups
+                        d1 = Goo1;
+                        d1 = new MyDelegate(Goo2);
+                        Target(Goo3);
+                        Target((m, n, o) => { var x = m + (o ? n.Length : 0); });
+                        d1 = Result();
+                        d1 = Result2().First();
+                        d1 = Result3().First();
+
+                        // And references to those methods
+                        Goo1(1, "Two", true);
+                        Goo2(1, "Two", true);
+                        Goo2(1, false, false); // shouldn't change
+                        Goo3(1, "Two", true);
+                        Goo4(1, "Two", true);
+                        Goo5(1, "Two", true);
+                    }
+
+                    private MyDelegate Result() { return Goo4; }
+                    private IEnumerable<MyDelegate> Result2() { yield return Goo5; }
+                    private IEnumerable<MyDelegate> Result3() { yield return (g, h, i) => { var x = g + (i ? h.Length : 0); }; }
+
+                    void Target(MyDelegate d) { }
+                    void TargetTakesAction(Action<int, string> a) { }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo1(int a, string b, bool c) { }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo2(int a, string b, bool c) { }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo2(int a, object b, bool c) { }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo3(int a, string b, bool c) { }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo4(int a, string b, bool c) { }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo5(int a, string b, bool c) { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(
                 LanguageNames.CSharp,
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Delegates.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Delegates.cs
index eacb523cd690a..49f9d3e5cc1ca 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Delegates.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Delegates.cs
@@ -27,29 +27,31 @@ protected internal override string GetLanguage()
         [Fact]
         public async Task ChangeSignature_Delegates_ImplicitInvokeCalls()
         {
-            var markup = @"
-delegate void MyDelegate($$int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1(1, ""Two"", true);
-    }
-}";
+            var markup = """
+                delegate void MyDelegate($$int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1(1, "Two", true);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1(true, ""Two"");
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1(true, "Two");
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 0);
         }
@@ -57,29 +59,31 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ChangeSignature_Delegates_ExplicitInvokeCalls()
         {
-            var markup = @"
-delegate void MyDelegate(int x, string $$y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.Invoke(1, ""Two"", true);
-    }
-}";
+            var markup = """
+                delegate void MyDelegate(int x, string $$y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.Invoke(1, "Two", true);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.Invoke(true, ""Two"");
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.Invoke(true, "Two");
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 1);
         }
@@ -87,29 +91,31 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ChangeSignature_Delegates_BeginInvokeCalls()
         {
-            var markup = @"
-delegate void MyDelegate(int x, string y, bool z$$);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.BeginInvoke(1, ""Two"", true, null, null);
-    }
-}";
+            var markup = """
+                delegate void MyDelegate(int x, string y, bool z$$);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.BeginInvoke(1, "Two", true, null, null);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1.BeginInvoke(true, ""Two"", null, null);
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1.BeginInvoke(true, "Two", null, null);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 2);
         }
@@ -117,633 +123,669 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ChangeSignature_Delegates_AnonymousMethods()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = delegate (int e, string f, bool g) { var x = f.Length + (g ? 0 : 1); };
-        d1 = delegate { };
-    }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = delegate (int e, string f, bool g) { var x = f.Length + (g ? 0 : 1); };
+                        d1 = delegate { };
+                    }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = delegate (bool g, string f) { var x = f.Length + (g ? 0 : 1); };
-        d1 = delegate { };
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = delegate (bool g, string f) { var x = f.Length + (g ? 0 : 1); };
+                        d1 = delegate { };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_Lambdas()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = (r, s, t) => { var x = s.Length + (t ? 0 : 1); };
-    }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = (r, s, t) => { var x = s.Length + (t ? 0 : 1); };
+                    }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = (t, s) => { var x = s.Length + (t ? 0 : 1); };
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = (t, s) => { var x = s.Length + (t ? 0 : 1); };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_Lambdas_RemovingOnlyParameterIntroducesParentheses()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = (r) => { System.Console.WriteLine(""Test""); };
-        d1 = r => { System.Console.WriteLine(""Test""); };
-        d1 = r => { System.Console.WriteLine(""Test""); };
-    }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = (r) => { System.Console.WriteLine("Test"); };
+                        d1 = r => { System.Console.WriteLine("Test"); };
+                        d1 = r => { System.Console.WriteLine("Test"); };
+                    }
+                }
+                """;
             var updatedSignature = Array.Empty<int>();
-            var expectedUpdatedCode = @"
-delegate void MyDelegate();
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = () => { System.Console.WriteLine(""Test""); };
-        d1 = () => { System.Console.WriteLine(""Test""); };
-        d1 = () => { System.Console.WriteLine(""Test""); };
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate();
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = () => { System.Console.WriteLine("Test"); };
+                        d1 = () => { System.Console.WriteLine("Test"); };
+                        d1 = () => { System.Console.WriteLine("Test"); };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_CascadeThroughMethodGroups_AssignedToVariable()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = Goo;
-        Goo(1, ""Two"", true);
-        Goo(1, false, false);
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = Goo;
+                        Goo(1, "Two", true);
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = null;
-        d1 = Goo;
-        Goo(true, ""Two"");
-        Goo(1, false, false);
-    }
-
-    void Goo(bool c, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = null;
+                        d1 = Goo;
+                        Goo(true, "Two");
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(bool c, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_CascadeThroughMethodGroups_DelegateConstructor()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = new MyDelegate(Goo);
-        Goo(1, ""Two"", true);
-        Goo(1, false, false);
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = new MyDelegate(Goo);
+                        Goo(1, "Two", true);
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = new MyDelegate(Goo);
-        Goo(true, ""Two"");
-        Goo(1, false, false);
-    }
-
-    void Goo(bool c, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = new MyDelegate(Goo);
+                        Goo(true, "Two");
+                        Goo(1, false, false);
+                    }
+
+                    void Goo(bool c, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_CascadeThroughMethodGroups_PassedAsArgument()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        Target(Goo);
-        Goo(1, ""Two"", true);
-        Goo(1, false, false);
-    }
-
-    void Target(MyDelegate d) { }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        Target(Goo);
+                        Goo(1, "Two", true);
+                        Goo(1, false, false);
+                    }
+
+                    void Target(MyDelegate d) { }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        Target(Goo);
-        Goo(true, ""Two"");
-        Goo(1, false, false);
-    }
-
-    void Target(MyDelegate d) { }
-
-    void Goo(bool c, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        Target(Goo);
+                        Goo(true, "Two");
+                        Goo(1, false, false);
+                    }
+
+                    void Target(MyDelegate d) { }
+
+                    void Goo(bool c, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_CascadeThroughMethodGroups_ReturnValue()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Result();
-        Goo(1, ""Two"", true);
-    }
-
-    private MyDelegate Result()
-    {
-        return Goo;
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Result();
+                        Goo(1, "Two", true);
+                    }
+
+                    private MyDelegate Result()
+                    {
+                        return Goo;
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Result();
-        Goo(true, ""Two"");
-    }
-
-    private MyDelegate Result()
-    {
-        return Goo;
-    }
-
-    void Goo(bool c, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Result();
+                        Goo(true, "Two");
+                    }
+
+                    private MyDelegate Result()
+                    {
+                        return Goo;
+                    }
+
+                    void Goo(bool c, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_CascadeThroughMethodGroups_YieldReturnValue()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        Goo(1, ""Two"", true);
-    }
-
-    private IEnumerable<MyDelegate> Result()
-    {
-        yield return Goo;
-    }
-
-    void Goo(int a, string b, bool c) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        Goo(1, "Two", true);
+                    }
+
+                    private IEnumerable<MyDelegate> Result()
+                    {
+                        yield return Goo;
+                    }
+
+                    void Goo(int a, string b, bool c) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-using System.Collections.Generic;
-
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        Goo(true, ""Two"");
-    }
-
-    private IEnumerable<MyDelegate> Result()
-    {
-        yield return Goo;
-    }
-
-    void Goo(bool c, string b) { }
-    void Goo(int a, object b, bool c) { }
-}";
+            var expectedUpdatedCode = """
+                using System.Collections.Generic;
+
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        Goo(true, "Two");
+                    }
+
+                    private IEnumerable<MyDelegate> Result()
+                    {
+                        yield return Goo;
+                    }
+
+                    void Goo(bool c, string b) { }
+                    void Goo(int a, object b, bool c) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_ReferencingLambdas_MethodArgument()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M6()
-    {
-        Target((m, n, o) => { var x = n.Length + (o ? 0 : 1); });
-    }
-
-    void Target(MyDelegate d) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M6()
+                    {
+                        Target((m, n, o) => { var x = n.Length + (o ? 0 : 1); });
+                    }
+
+                    void Target(MyDelegate d) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M6()
-    {
-        Target((o, n) => { var x = n.Length + (o ? 0 : 1); });
-    }
-
-    void Target(MyDelegate d) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M6()
+                    {
+                        Target((o, n) => { var x = n.Length + (o ? 0 : 1); });
+                    }
+
+                    void Target(MyDelegate d) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_ReferencingLambdas_YieldReturn()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-delegate void $$MyDelegate(int x, string y, bool z);
-class C
-{
-    private IEnumerable<MyDelegate> Result3()
-    {
-        yield return (g, h, i) => { var x = h.Length + (i ? 0 : 1); };
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                delegate void $$MyDelegate(int x, string y, bool z);
+                class C
+                {
+                    private IEnumerable<MyDelegate> Result3()
+                    {
+                        yield return (g, h, i) => { var x = h.Length + (i ? 0 : 1); };
+                    }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-using System.Collections.Generic;
-
-delegate void MyDelegate(bool z, string y);
-class C
-{
-    private IEnumerable<MyDelegate> Result3()
-    {
-        yield return (i, h) => { var x = h.Length + (i ? 0 : 1); };
-    }
-}";
+            var expectedUpdatedCode = """
+                using System.Collections.Generic;
+
+                delegate void MyDelegate(bool z, string y);
+                class C
+                {
+                    private IEnumerable<MyDelegate> Result3()
+                    {
+                        yield return (i, h) => { var x = h.Length + (i ? 0 : 1); };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_Recursive()
         {
-            var markup = @"
-delegate RecursiveDelegate $$RecursiveDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        RecursiveDelegate rd = null;
-        rd(1, ""Two"", true)(1, ""Two"", true)(1, ""Two"", true)(1, ""Two"", true)(1, ""Two"", true);
-    }
-}";
+            var markup = """
+                delegate RecursiveDelegate $$RecursiveDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        RecursiveDelegate rd = null;
+                        rd(1, "Two", true)(1, "Two", true)(1, "Two", true)(1, "Two", true)(1, "Two", true);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate RecursiveDelegate RecursiveDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        RecursiveDelegate rd = null;
-        rd(true, ""Two"")(true, ""Two"")(true, ""Two"")(true, ""Two"")(true, ""Two"");
-    }
-}";
+            var expectedUpdatedCode = """
+                delegate RecursiveDelegate RecursiveDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        RecursiveDelegate rd = null;
+                        rd(true, "Two")(true, "Two")(true, "Two")(true, "Two")(true, "Two");
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_DocComments()
         {
-            var markup = @"
-/// <summary>
-/// This is <see cref=""MyDelegate""/>, which has these methods:
-///     <see cref=""MyDelegate.MyDelegate(object, IntPtr)""/>
-///     <see cref=""MyDelegate.Invoke(int, string, bool)""/>
-///     <see cref=""MyDelegate.EndInvoke(IAsyncResult)""/>
-///     <see cref=""MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)""/>
-/// </summary>
-/// <param name=""x"">x!</param>
-/// <param name=""y"">y!</param>
-/// <param name=""z"">z!</param>
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Goo;
-        Goo(1, ""Two"", true);
-    }
-
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo(int a, string b, bool c) { }
-}";
+            var markup = """
+                /// <summary>
+                /// This is <see cref="MyDelegate"/>, which has these methods:
+                ///     <see cref="MyDelegate.MyDelegate(object, IntPtr)"/>
+                ///     <see cref="MyDelegate.Invoke(int, string, bool)"/>
+                ///     <see cref="MyDelegate.EndInvoke(IAsyncResult)"/>
+                ///     <see cref="MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)"/>
+                /// </summary>
+                /// <param name="x">x!</param>
+                /// <param name="y">y!</param>
+                /// <param name="z">z!</param>
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Goo;
+                        Goo(1, "Two", true);
+                    }
+
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo(int a, string b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-/// <summary>
-/// This is <see cref=""MyDelegate""/>, which has these methods:
-///     <see cref=""MyDelegate.MyDelegate(object, IntPtr)""/>
-///     <see cref=""MyDelegate.Invoke(bool, string)""/>
-///     <see cref=""MyDelegate.EndInvoke(IAsyncResult)""/>
-///     <see cref=""MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)""/>
-/// </summary>
-/// <param name=""z"">z!</param>
-/// <param name=""y"">y!</param>
-/// 
-delegate void MyDelegate(bool z, string y);
-
-class C
-{
-    void M()
-    {
-        MyDelegate d1 = Goo;
-        Goo(true, ""Two"");
-    }
-
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    /// 
-    void Goo(bool c, string b) { }
-}";
+            var expectedUpdatedCode = """
+                /// <summary>
+                /// This is <see cref="MyDelegate"/>, which has these methods:
+                ///     <see cref="MyDelegate.MyDelegate(object, IntPtr)"/>
+                ///     <see cref="MyDelegate.Invoke(bool, string)"/>
+                ///     <see cref="MyDelegate.EndInvoke(IAsyncResult)"/>
+                ///     <see cref="MyDelegate.BeginInvoke(int, string, bool, AsyncCallback, object)"/>
+                /// </summary>
+                /// <param name="z">z!</param>
+                /// <param name="y">y!</param>
+                /// 
+                delegate void MyDelegate(bool z, string y);
+
+                class C
+                {
+                    void M()
+                    {
+                        MyDelegate d1 = Goo;
+                        Goo(true, "Two");
+                    }
+
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    /// 
+                    void Goo(bool c, string b) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_CascadeThroughEventAdd()
         {
-            var markup = @"
-delegate void $$MyDelegate(int x, string y, bool z);
-
-class Program
-{
-    void M()
-    {
-        MyEvent += Program_MyEvent;
-    }
-
-    event MyDelegate MyEvent;
-    void Program_MyEvent(int a, string b, bool c) { }
-}";
+            var markup = """
+                delegate void $$MyDelegate(int x, string y, bool z);
+
+                class Program
+                {
+                    void M()
+                    {
+                        MyEvent += Program_MyEvent;
+                    }
+
+                    event MyDelegate MyEvent;
+                    void Program_MyEvent(int a, string b, bool c) { }
+                }
+                """;
             var updatedSignature = new[] { 2, 1 };
-            var expectedUpdatedCode = @"
-delegate void MyDelegate(bool z, string y);
-
-class Program
-{
-    void M()
-    {
-        MyEvent += Program_MyEvent;
-    }
-
-    event MyDelegate MyEvent;
-    void Program_MyEvent(bool c, string b) { }
-}";
+            var expectedUpdatedCode = """
+                delegate void MyDelegate(bool z, string y);
+
+                class Program
+                {
+                    void M()
+                    {
+                        MyEvent += Program_MyEvent;
+                    }
+
+                    event MyDelegate MyEvent;
+                    void Program_MyEvent(bool c, string b) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_Generics1()
         {
-            var markup = @"
-public class DP16a
-{
-    public delegate void D<T>($$T t);
-    public event D<int> E1;
-    public event D<int> E2;
-
-    public void M1(int i) { }
-    public void M2(int i) { }
-    public void M3(int i) { }
-
-    void B()
-    {
-        D<int> d = new D<int>(M1);
-        E1 += new D<int>(M2);
-        E2 -= new D<int>(M3);
-    }
-}";
+            var markup = """
+                public class DP16a
+                {
+                    public delegate void D<T>($$T t);
+                    public event D<int> E1;
+                    public event D<int> E2;
+
+                    public void M1(int i) { }
+                    public void M2(int i) { }
+                    public void M3(int i) { }
+
+                    void B()
+                    {
+                        D<int> d = new D<int>(M1);
+                        E1 += new D<int>(M2);
+                        E2 -= new D<int>(M3);
+                    }
+                }
+                """;
             var updatedSignature = Array.Empty<int>();
-            var expectedUpdatedCode = @"
-public class DP16a
-{
-    public delegate void D<T>();
-    public event D<int> E1;
-    public event D<int> E2;
-
-    public void M1() { }
-    public void M2() { }
-    public void M3() { }
-
-    void B()
-    {
-        D<int> d = new D<int>(M1);
-        E1 += new D<int>(M2);
-        E2 -= new D<int>(M3);
-    }
-}";
+            var expectedUpdatedCode = """
+                public class DP16a
+                {
+                    public delegate void D<T>();
+                    public event D<int> E1;
+                    public event D<int> E2;
+
+                    public void M1() { }
+                    public void M2() { }
+                    public void M3() { }
+
+                    void B()
+                    {
+                        D<int> d = new D<int>(M1);
+                        E1 += new D<int>(M2);
+                        E2 -= new D<int>(M3);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_Generics2()
         {
-            var markup = @"
-public class D17<T>
-{
-    public delegate void $$D(T t);
-}
-public class D17Test
-{
-    void Test() { var x = new D17<string>.D(M17); }
-    internal void M17(string s) { }
-}";
+            var markup = """
+                public class D17<T>
+                {
+                    public delegate void $$D(T t);
+                }
+                public class D17Test
+                {
+                    void Test() { var x = new D17<string>.D(M17); }
+                    internal void M17(string s) { }
+                }
+                """;
             var updatedSignature = Array.Empty<int>();
-            var expectedUpdatedCode = @"
-public class D17<T>
-{
-    public delegate void D();
-}
-public class D17Test
-{
-    void Test() { var x = new D17<string>.D(M17); }
-    internal void M17() { }
-}";
+            var expectedUpdatedCode = """
+                public class D17<T>
+                {
+                    public delegate void D();
+                }
+                public class D17Test
+                {
+                    void Test() { var x = new D17<string>.D(M17); }
+                    internal void M17() { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_GenericParams()
         {
-            var markup = @"
-class DA
-{
-    void M(params int[] i) { }
-    void B()
-    {
-        DP20<int>.D d = new DP20<int>.D(M);
-        d();
-        d(0);
-        d(0, 1);
-    }
-}
-public class DP20<T>
-{
-    public delegate void $$D(params T[] t);
-    public void M1(params T[] t) { }
-
-    void B()
-    {
-        D d = new D(M1);
-    }
-}";
+            var markup = """
+                class DA
+                {
+                    void M(params int[] i) { }
+                    void B()
+                    {
+                        DP20<int>.D d = new DP20<int>.D(M);
+                        d();
+                        d(0);
+                        d(0, 1);
+                    }
+                }
+                public class DP20<T>
+                {
+                    public delegate void $$D(params T[] t);
+                    public void M1(params T[] t) { }
+
+                    void B()
+                    {
+                        D d = new D(M1);
+                    }
+                }
+                """;
             var updatedSignature = Array.Empty<int>();
-            var expectedUpdatedCode = @"
-class DA
-{
-    void M() { }
-    void B()
-    {
-        DP20<int>.D d = new DP20<int>.D(M);
-        d();
-        d();
-        d();
-    }
-}
-public class DP20<T>
-{
-    public delegate void D();
-    public void M1() { }
-
-    void B()
-    {
-        D d = new D(M1);
-    }
-}";
+            var expectedUpdatedCode = """
+                class DA
+                {
+                    void M() { }
+                    void B()
+                    {
+                        DP20<int>.D d = new DP20<int>.D(M);
+                        d();
+                        d();
+                        d();
+                    }
+                }
+                public class DP20<T>
+                {
+                    public delegate void D();
+                    public void M1() { }
+
+                    void B()
+                    {
+                        D d = new D(M1);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Delegates_Generic_RemoveArgumentAtReference()
         {
-            var markup = @"public class CD<T>
-{
-    public delegate void D(T t);
-}
-class Test
-{
-    public void M()
-    {
-        var dele = new CD<int>.$$D((int x) => { });
-    }
-}";
+            var markup = """
+                public class CD<T>
+                {
+                    public delegate void D(T t);
+                }
+                class Test
+                {
+                    public void M()
+                    {
+                        var dele = new CD<int>.$$D((int x) => { });
+                    }
+                }
+                """;
             var updatedSignature = Array.Empty<int>();
-            var expectedUpdatedCode = @"public class CD<T>
-{
-    public delegate void D();
-}
-class Test
-{
-    public void M()
-    {
-        var dele = new CD<int>.D(() => { });
-    }
-}";
+            var expectedUpdatedCode = """
+                public class CD<T>
+                {
+                    public delegate void D();
+                }
+                class Test
+                {
+                    public void M()
+                    {
+                        var dele = new CD<int>.D(() => { });
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature,
                 expectedUpdatedInvocationDocumentCode: expectedUpdatedCode, expectedSelectedIndex: 0);
         }
@@ -751,41 +793,43 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ChangeSignature_Delegate_Generics_RemoveStaticArgument()
         {
-            var markup = @"
-public class C2<T>
-{
-    public delegate void D(T t);
-}
-
-public class D2
-{
-    public static D2 Instance = null;
-    void M(D2 m) { }
-
-    void B()
-    {
-        C2<D2>.D d = new C2<D2>.D(M);
-        $$d(D2.Instance);
-    }
-}";
+            var markup = """
+                public class C2<T>
+                {
+                    public delegate void D(T t);
+                }
+
+                public class D2
+                {
+                    public static D2 Instance = null;
+                    void M(D2 m) { }
+
+                    void B()
+                    {
+                        C2<D2>.D d = new C2<D2>.D(M);
+                        $$d(D2.Instance);
+                    }
+                }
+                """;
             var updatedSignature = Array.Empty<int>();
-            var expectedUpdatedCode = @"
-public class C2<T>
-{
-    public delegate void D();
-}
-
-public class D2
-{
-    public static D2 Instance = null;
-    void M() { }
-
-    void B()
-    {
-        C2<D2>.D d = new C2<D2>.D(M);
-        d();
-    }
-}";
+            var expectedUpdatedCode = """
+                public class C2<T>
+                {
+                    public delegate void D();
+                }
+
+                public class D2
+                {
+                    public static D2 Instance = null;
+                    void M() { }
+
+                    void B()
+                    {
+                        C2<D2>.D d = new C2<D2>.D(M);
+                        d();
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Formatting.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Formatting.cs
index afa05baf8c179..3f4a7e820eb97 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Formatting.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ChangeSignature_Formatting.cs
@@ -18,416 +18,448 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task ChangeSignature_Formatting_KeepCountsPerLine()
         {
-            var markup = @"
-class C
-{
-    void $$Method(int a, int b, int c,
-        int d, int e,
-        int f)
-    {
-        Method(1,
-            2, 3,
-            4, 5, 6);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void $$Method(int a, int b, int c,
+                        int d, int e,
+                        int f)
+                    {
+                        Method(1,
+                            2, 3,
+                            4, 5, 6);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 5, 4, 3, 2, 1, 0 };
-            var expectedUpdatedCode = @"
-class C
-{
-    void Method(int f, int e, int d,
-        int c, int b,
-        int a)
-    {
-        Method(6,
-            5, 4,
-            3, 2, 1);
-    }
-}";
+            var expectedUpdatedCode = """
+                class C
+                {
+                    void Method(int f, int e, int d,
+                        int c, int b,
+                        int a)
+                    {
+                        Method(6,
+                            5, 4,
+                            3, 2, 1);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28156")]
         public async Task ChangeSignature_Formatting_KeepTrivia()
         {
-            var markup = @"
-class C
-{
-    void $$Method(
-        int a, int b, int c,
-        int d, int e,
-        int f)
-    {
-        Method(
-            1, 2, 3,
-            4, 5, 6);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void $$Method(
+                        int a, int b, int c,
+                        int d, int e,
+                        int f)
+                    {
+                        Method(
+                            1, 2, 3,
+                            4, 5, 6);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1, 2, 3, 4, 5 };
-            var expectedUpdatedCode = @"
-class C
-{
-    void Method(
-        int b, int c, int d,
-        int e, int f)
-    {
-        Method(
-            2, 3, 4,
-            5, 6);
-    }
-}";
+            var expectedUpdatedCode = """
+                class C
+                {
+                    void Method(
+                        int b, int c, int d,
+                        int e, int f)
+                    {
+                        Method(
+                            2, 3, 4,
+                            5, 6);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28156")]
         public async Task ChangeSignature_Formatting_KeepTrivia_WithArgumentNames()
         {
-            var markup = @"
-class C
-{
-    void $$Method(
-        int a, int b, int c,
-        int d, int e,
-        int f)
-    {
-        Method(
-            a: 1, b: 2, c: 3,
-            d: 4, e: 5, f: 6);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void $$Method(
+                        int a, int b, int c,
+                        int d, int e,
+                        int f)
+                    {
+                        Method(
+                            a: 1, b: 2, c: 3,
+                            d: 4, e: 5, f: 6);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1, 2, 3, 4, 5 };
-            var expectedUpdatedCode = @"
-class C
-{
-    void Method(
-        int b, int c, int d,
-        int e, int f)
-    {
-        Method(
-            b: 2, c: 3, d: 4,
-            e: 5, f: 6);
-    }
-}";
+            var expectedUpdatedCode = """
+                class C
+                {
+                    void Method(
+                        int b, int c, int d,
+                        int e, int f)
+                    {
+                        Method(
+                            b: 2, c: 3, d: 4,
+                            e: 5, f: 6);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Formatting_Method()
         {
-            var markup = @"
-class C
-{
-    void $$Method(int a, 
-        int b)
-    {
-        Method(1,
-            2);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void $$Method(int a, 
+                        int b)
+                    {
+                        Method(1,
+                            2);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1, 0 };
-            var expectedUpdatedCode = @"
-class C
-{
-    void Method(int b,
-        int a)
-    {
-        Method(2,
-            1);
-    }
-}";
+            var expectedUpdatedCode = """
+                class C
+                {
+                    void Method(int b,
+                        int a)
+                    {
+                        Method(2,
+                            1);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Formatting_Constructor()
         {
-            var markup = @"
-class SomeClass
-{
-    $$SomeClass(int a,
-        int b)
-    {
-        new SomeClass(1,
-            2);
-    }
-}";
+            var markup = """
+                class SomeClass
+                {
+                    $$SomeClass(int a,
+                        int b)
+                    {
+                        new SomeClass(1,
+                            2);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1, 0 };
-            var expectedUpdatedCode = @"
-class SomeClass
-{
-    SomeClass(int b,
-        int a)
-    {
-        new SomeClass(2,
-            1);
-    }
-}";
+            var expectedUpdatedCode = """
+                class SomeClass
+                {
+                    SomeClass(int b,
+                        int a)
+                    {
+                        new SomeClass(2,
+                            1);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Formatting_Indexer()
         {
-            var markup = @"
-class SomeClass
-{
-    public int $$this[int a,
-        int b]
-    {
-        get
-        {
-            return new SomeClass()[1,
-                2];
-        }
-    }
-}";
+            var markup = """
+                class SomeClass
+                {
+                    public int $$this[int a,
+                        int b]
+                    {
+                        get
+                        {
+                            return new SomeClass()[1,
+                                2];
+                        }
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1, 0 };
-            var expectedUpdatedCode = @"
-class SomeClass
-{
-    public int this[int b,
-        int a]
-    {
-        get
-        {
-            return new SomeClass()[2,
-                1];
-        }
-    }
-}";
+            var expectedUpdatedCode = """
+                class SomeClass
+                {
+                    public int this[int b,
+                        int a]
+                    {
+                        get
+                        {
+                            return new SomeClass()[2,
+                                1];
+                        }
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Formatting_Delegate()
         {
-            var markup = @"
-class SomeClass
-{
-    delegate void $$MyDelegate(int a,
-        int b);
+            var markup = """
+                class SomeClass
+                {
+                    delegate void $$MyDelegate(int a,
+                        int b);
 
-    void M(int a,
-        int b)
-    {
-        var myDel = new MyDelegate(M);
-        myDel(1,
-            2);
-    }
-}";
+                    void M(int a,
+                        int b)
+                    {
+                        var myDel = new MyDelegate(M);
+                        myDel(1,
+                            2);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1, 0 };
-            var expectedUpdatedCode = @"
-class SomeClass
-{
-    delegate void MyDelegate(int b,
-        int a);
+            var expectedUpdatedCode = """
+                class SomeClass
+                {
+                    delegate void MyDelegate(int b,
+                        int a);
 
-    void M(int b,
-        int a)
-    {
-        var myDel = new MyDelegate(M);
-        myDel(2,
-            1);
-    }
-}";
+                    void M(int b,
+                        int a)
+                    {
+                        var myDel = new MyDelegate(M);
+                        myDel(2,
+                            1);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Formatting_AnonymousMethod()
         {
-            var markup = @"
-class SomeClass
-{
-    delegate void $$MyDelegate(int a,
-        int b);
+            var markup = """
+                class SomeClass
+                {
+                    delegate void $$MyDelegate(int a,
+                        int b);
 
-    void M()
-    {
-        MyDelegate myDel = delegate (int x,
-            int y)
-        {
-            // Nothing
-        };
-    }
-}";
+                    void M()
+                    {
+                        MyDelegate myDel = delegate (int x,
+                            int y)
+                        {
+                            // Nothing
+                        };
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1, 0 };
-            var expectedUpdatedCode = @"
-class SomeClass
-{
-    delegate void MyDelegate(int b,
-        int a);
+            var expectedUpdatedCode = """
+                class SomeClass
+                {
+                    delegate void MyDelegate(int b,
+                        int a);
 
-    void M()
-    {
-        MyDelegate myDel = delegate (int y,
-            int x)
-        {
-            // Nothing
-        };
-    }
-}";
+                    void M()
+                    {
+                        MyDelegate myDel = delegate (int y,
+                            int x)
+                        {
+                            // Nothing
+                        };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Formatting_ConstructorInitializers()
         {
-            var markup = @"
-class B
-{
-    public $$B(int x, int y) { }
-    public B() : this(1,
-        2)
-    { }
-}
+            var markup = """
+                class B
+                {
+                    public $$B(int x, int y) { }
+                    public B() : this(1,
+                        2)
+                    { }
+                }
 
-class D : B
-{
-    public D() : base(1,
-        2)
-    { }
-}";
+                class D : B
+                {
+                    public D() : base(1,
+                        2)
+                    { }
+                }
+                """;
             var updatedSignature = new[] { 1, 0 };
-            var expectedUpdatedCode = @"
-class B
-{
-    public B(int y, int x) { }
-    public B() : this(2,
-        1)
-    { }
-}
+            var expectedUpdatedCode = """
+                class B
+                {
+                    public B(int y, int x) { }
+                    public B() : this(2,
+                        1)
+                    { }
+                }
 
-class D : B
-{
-    public D() : base(2,
-        1)
-    { }
-}";
+                class D : B
+                {
+                    public D() : base(2,
+                        1)
+                    { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact]
         public async Task ChangeSignature_Formatting_Attribute()
         {
-            var markup = @"
-[Custom(1,
-    2)]
-class CustomAttribute : System.Attribute
-{
-    public $$CustomAttribute(int x, int y) { }
-}";
+            var markup = """
+                [Custom(1,
+                    2)]
+                class CustomAttribute : System.Attribute
+                {
+                    public $$CustomAttribute(int x, int y) { }
+                }
+                """;
             var updatedSignature = new[] { 1, 0 };
-            var expectedUpdatedCode = @"
-[Custom(2,
-    1)]
-class CustomAttribute : System.Attribute
-{
-    public CustomAttribute(int y, int x) { }
-}";
+            var expectedUpdatedCode = """
+                [Custom(2,
+                    1)]
+                class CustomAttribute : System.Attribute
+                {
+                    public CustomAttribute(int y, int x) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28156")]
         public async Task ChangeSignature_Formatting_Attribute_KeepTrivia()
         {
-            var markup = @"
-[Custom(
-    1, 2)]
-class CustomAttribute : System.Attribute
-{
-    public $$CustomAttribute(int x, int y) { }
-}";
+            var markup = """
+                [Custom(
+                    1, 2)]
+                class CustomAttribute : System.Attribute
+                {
+                    public $$CustomAttribute(int x, int y) { }
+                }
+                """;
             var updatedSignature = new[] { 1 };
-            var expectedUpdatedCode = @"
-[Custom(
-    2)]
-class CustomAttribute : System.Attribute
-{
-    public CustomAttribute(int y) { }
-}";
+            var expectedUpdatedCode = """
+                [Custom(
+                    2)]
+                class CustomAttribute : System.Attribute
+                {
+                    public CustomAttribute(int y) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28156")]
         public async Task ChangeSignature_Formatting_Attribute_KeepTrivia_RemovingSecond()
         {
-            var markup = @"
-[Custom(
-    1, 2)]
-class CustomAttribute : System.Attribute
-{
-    public $$CustomAttribute(int x, int y) { }
-}";
+            var markup = """
+                [Custom(
+                    1, 2)]
+                class CustomAttribute : System.Attribute
+                {
+                    public $$CustomAttribute(int x, int y) { }
+                }
+                """;
             var updatedSignature = new[] { 0 };
-            var expectedUpdatedCode = @"
-[Custom(
-    1)]
-class CustomAttribute : System.Attribute
-{
-    public CustomAttribute(int x) { }
-}";
+            var expectedUpdatedCode = """
+                [Custom(
+                    1)]
+                class CustomAttribute : System.Attribute
+                {
+                    public CustomAttribute(int x) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28156")]
         public async Task ChangeSignature_Formatting_Attribute_KeepTrivia_RemovingBoth()
         {
-            var markup = @"
-[Custom(
-    1, 2)]
-class CustomAttribute : System.Attribute
-{
-    public $$CustomAttribute(int x, int y) { }
-}";
+            var markup = """
+                [Custom(
+                    1, 2)]
+                class CustomAttribute : System.Attribute
+                {
+                    public $$CustomAttribute(int x, int y) { }
+                }
+                """;
             var updatedSignature = new int[] { };
-            var expectedUpdatedCode = @"
-[Custom(
-)]
-class CustomAttribute : System.Attribute
-{
-    public CustomAttribute() { }
-}";
+            var expectedUpdatedCode = """
+                [Custom(
+                )]
+                class CustomAttribute : System.Attribute
+                {
+                    public CustomAttribute() { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28156")]
         public async Task ChangeSignature_Formatting_Attribute_KeepTrivia_RemovingBeforeNewlineComma()
         {
-            var markup = @"
-[Custom(1
-    , 2, 3)]
-class CustomAttribute : System.Attribute
-{
-    public $$CustomAttribute(int x, int y, int z) { }
-}";
+            var markup = """
+                [Custom(1
+                    , 2, 3)]
+                class CustomAttribute : System.Attribute
+                {
+                    public $$CustomAttribute(int x, int y, int z) { }
+                }
+                """;
             var updatedSignature = new[] { 1, 2 };
-            var expectedUpdatedCode = @"
-[Custom(2, 3)]
-class CustomAttribute : System.Attribute
-{
-    public CustomAttribute(int y, int z) { }
-}";
+            var expectedUpdatedCode = """
+                [Custom(2, 3)]
+                class CustomAttribute : System.Attribute
+                {
+                    public CustomAttribute(int y, int z) { }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/946220")]
         public async Task ChangeSignature_Formatting_LambdaAsArgument()
         {
-            var markup = @"class C
-{
-    void M(System.Action<int, int> f, int z$$)
-    {
-        M((x, y) => System.Console.WriteLine(x + y), 5);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M(System.Action<int, int> f, int z$$)
+                    {
+                        M((x, y) => System.Console.WriteLine(x + y), 5);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 0 };
-            var expectedUpdatedCode = @"class C
-{
-    void M(System.Action<int, int> f)
-    {
-        M((x, y) => System.Console.WriteLine(x + y));
-    }
-}";
+            var expectedUpdatedCode = """
+                class C
+                {
+                    void M(System.Action<int, int> f)
+                    {
+                        M((x, y) => System.Console.WriteLine(x + y));
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: expectedUpdatedCode);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/RemoveParametersTests.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/RemoveParametersTests.cs
index d34b9e380fe94..b975cd9071df6 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/RemoveParametersTests.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/RemoveParametersTests.cs
@@ -28,89 +28,91 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact, Trait(Traits.Feature, Traits.Features.ChangeSignature)]
         public async Task RemoveParameters1()
         {
-            var markup = @"
-static class Ext
-{
-    /// <summary>
-    /// This is a summary of <see cref=""M(object, int, string, bool, int, string, int[])""/>
-    /// </summary>
-    /// <param name=""o""></param>
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""x""></param>
-    /// <param name=""y""></param>
-    /// <param name=""p""></param>
-    static void $$M(this object o, int a, string b, bool c, int x = 0, string y = ""Zero"", params int[] p)
-    {
-        object t = new object();
-
-        M(t, 1, ""two"", true, 3, ""four"", new[] { 5, 6 });
-        M(t, 1, ""two"", true, 3, ""four"", 5, 6);
-        t.M(1, ""two"", true, 3, ""four"", new[] { 5, 6 });
-        t.M(1, ""two"", true, 3, ""four"", 5, 6);
-
-        M(t, 1, ""two"", true, 3, ""four"");
-        M(t, 1, ""two"", true, 3);
-        M(t, 1, ""two"", true);
-
-        M(t, 1, ""two"", c: true);
-        M(t, 1, ""two"", true, 3, y: ""four"");
-
-        M(t, 1, ""two"", true, 3, p: new[] { 5 });
-        M(t, 1, ""two"", true, p: new[] { 5 });
-        M(t, 1, ""two"", true, y: ""four"");
-        M(t, 1, ""two"", true, x: 3);
-
-        M(t, 1, ""two"", true, y: ""four"", x: 3);
-        M(t, 1, y: ""four"", x: 3, b: ""two"", c: true);
-        M(t, y: ""four"", x: 3, c: true, b: ""two"", a: 1);
-        M(t, p: new[] { 5 }, y: ""four"", x: 3, c: true, b: ""two"", a: 1);
-        M(p: new[] { 5 }, y: ""four"", x: 3, c: true, b: ""two"", a: 1, o: t);
-    }
-}";
+            var markup = """
+                static class Ext
+                {
+                    /// <summary>
+                    /// This is a summary of <see cref="M(object, int, string, bool, int, string, int[])"/>
+                    /// </summary>
+                    /// <param name="o"></param>
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="x"></param>
+                    /// <param name="y"></param>
+                    /// <param name="p"></param>
+                    static void $$M(this object o, int a, string b, bool c, int x = 0, string y = "Zero", params int[] p)
+                    {
+                        object t = new object();
+
+                        M(t, 1, "two", true, 3, "four", new[] { 5, 6 });
+                        M(t, 1, "two", true, 3, "four", 5, 6);
+                        t.M(1, "two", true, 3, "four", new[] { 5, 6 });
+                        t.M(1, "two", true, 3, "four", 5, 6);
+
+                        M(t, 1, "two", true, 3, "four");
+                        M(t, 1, "two", true, 3);
+                        M(t, 1, "two", true);
+
+                        M(t, 1, "two", c: true);
+                        M(t, 1, "two", true, 3, y: "four");
+
+                        M(t, 1, "two", true, 3, p: new[] { 5 });
+                        M(t, 1, "two", true, p: new[] { 5 });
+                        M(t, 1, "two", true, y: "four");
+                        M(t, 1, "two", true, x: 3);
+
+                        M(t, 1, "two", true, y: "four", x: 3);
+                        M(t, 1, y: "four", x: 3, b: "two", c: true);
+                        M(t, y: "four", x: 3, c: true, b: "two", a: 1);
+                        M(t, p: new[] { 5 }, y: "four", x: 3, c: true, b: "two", a: 1);
+                        M(p: new[] { 5 }, y: "four", x: 3, c: true, b: "two", a: 1, o: t);
+                    }
+                }
+                """;
             var updatedSignature = new[] { 0, 2, 5 };
-            var updatedCode = @"
-static class Ext
-{
-    /// <summary>
-    /// This is a summary of <see cref=""M(object, string, string)""/>
-    /// </summary>
-    /// <param name=""o""></param>
-    /// <param name=""b""></param>
-    /// <param name=""y""></param>
-    /// 
-    /// 
-    /// 
-    /// 
-    static void M(this object o, string b, string y = ""Zero"")
-    {
-        object t = new object();
-
-        M(t, ""two"", ""four"");
-        M(t, ""two"", ""four"");
-        t.M(""two"", ""four"");
-        t.M(""two"", ""four"");
-
-        M(t, ""two"", ""four"");
-        M(t, ""two"");
-        M(t, ""two"");
-
-        M(t, ""two"");
-        M(t, ""two"", y: ""four"");
-
-        M(t, ""two"");
-        M(t, ""two"");
-        M(t, ""two"", y: ""four"");
-        M(t, ""two"");
-
-        M(t, ""two"", y: ""four"");
-        M(t, y: ""four"", b: ""two"");
-        M(t, y: ""four"", b: ""two"");
-        M(t, y: ""four"", b: ""two"");
-        M(y: ""four"", b: ""two"", o: t);
-    }
-}";
+            var updatedCode = """
+                static class Ext
+                {
+                    /// <summary>
+                    /// This is a summary of <see cref="M(object, string, string)"/>
+                    /// </summary>
+                    /// <param name="o"></param>
+                    /// <param name="b"></param>
+                    /// <param name="y"></param>
+                    /// 
+                    /// 
+                    /// 
+                    /// 
+                    static void M(this object o, string b, string y = "Zero")
+                    {
+                        object t = new object();
+
+                        M(t, "two", "four");
+                        M(t, "two", "four");
+                        t.M("two", "four");
+                        t.M("two", "four");
+
+                        M(t, "two", "four");
+                        M(t, "two");
+                        M(t, "two");
+
+                        M(t, "two");
+                        M(t, "two", y: "four");
+
+                        M(t, "two");
+                        M(t, "two");
+                        M(t, "two", y: "four");
+                        M(t, "two");
+
+                        M(t, "two", y: "four");
+                        M(t, y: "four", b: "two");
+                        M(t, y: "four", b: "two");
+                        M(t, y: "four", b: "two");
+                        M(y: "four", b: "two", o: t);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -118,69 +120,71 @@ static void M(this object o, string b, string y = ""Zero"")
         [Fact, Trait(Traits.Feature, Traits.Features.ChangeSignature)]
         public async Task RemoveParameters_GenericParameterType()
         {
-            var markup = @"
-class DA
-{
-    void M(params int[] i) { }
-
-    void B()
-    {
-        DP20<int>.D d = new DP20<int>.D(M);
-
-        /*DA19*/$$d(0);
-        d();
-        d(0, 1);
-    }
-}
-public class DP20<T>
-{
-    public delegate void /*DP20*/D(params T[] t);
-    public event D E1;
-    public event D E2;
+            var markup = """
+                class DA
+                {
+                    void M(params int[] i) { }
 
-    public void M1(params T[] t) { }
-    public void M2(params T[] t) { }
-    public void M3(params T[] t) { }
+                    void B()
+                    {
+                        DP20<int>.D d = new DP20<int>.D(M);
 
-    void B()
-    {
-        D d = new D(M1);
-        E1 += new D(M2);
-        E2 -= new D(M3);
-    }
-}";
+                        /*DA19*/$$d(0);
+                        d();
+                        d(0, 1);
+                    }
+                }
+                public class DP20<T>
+                {
+                    public delegate void /*DP20*/D(params T[] t);
+                    public event D E1;
+                    public event D E2;
+
+                    public void M1(params T[] t) { }
+                    public void M2(params T[] t) { }
+                    public void M3(params T[] t) { }
+
+                    void B()
+                    {
+                        D d = new D(M1);
+                        E1 += new D(M2);
+                        E2 -= new D(M3);
+                    }
+                }
+                """;
             var updatedSignature = Array.Empty<int>();
-            var updatedCode = @"
-class DA
-{
-    void M() { }
-
-    void B()
-    {
-        DP20<int>.D d = new DP20<int>.D(M);
-
-        /*DA19*/d();
-        d();
-        d();
-    }
-}
-public class DP20<T>
-{
-    public delegate void /*DP20*/D();
-    public event D E1;
-    public event D E2;
+            var updatedCode = """
+                class DA
+                {
+                    void M() { }
 
-    public void M1() { }
-    public void M2() { }
-    public void M3() { }
+                    void B()
+                    {
+                        DP20<int>.D d = new DP20<int>.D(M);
 
-    void B()
-    {
-        D d = new D(M1);
-        E1 += new D(M2);
-        E2 -= new D(M3);
-    }
-}";
+                        /*DA19*/d();
+                        d();
+                        d();
+                    }
+                }
+                public class DP20<T>
+                {
+                    public delegate void /*DP20*/D();
+                    public event D E1;
+                    public event D E2;
+
+                    public void M1() { }
+                    public void M2() { }
+                    public void M3() { }
+
+                    void B()
+                    {
+                        D d = new D(M1);
+                        E1 += new D(M2);
+                        E2 -= new D(M3);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -190,9 +194,10 @@ void B()
         [WorkItem("https://github.com/dotnet/roslyn/issues/784")]
         public async Task RemoveParameters_ExtensionMethodInAnotherFile()
         {
-            var workspaceXml = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""CSharpAssembly"" CommonReferences=""true"">";
+            var workspaceXml = """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="CSharpAssembly" CommonReferences="true">
+                """;
 
             for (var i = 0; i <= 4; i++)
             {
@@ -209,19 +214,20 @@ void M()
 </Document>";
             }
 
-            workspaceXml += @"
-<Document FilePath = ""C5.cs"">
-public class C5
-{
-}
+            workspaceXml += """
+                <Document FilePath = "C5.cs">
+                public class C5
+                {
+                }
 
-public static class C5Ext
-{
-    public void $$Ext(this C5 c, int i, string s)
-    {
-    }
-}
-</Document>";
+                public static class C5Ext
+                {
+                    public void $$Ext(this C5 c, int i, string s)
+                    {
+                    }
+                }
+                </Document>
+                """;
 
             for (var i = 6; i <= 9; i++)
             {
@@ -238,9 +244,10 @@ void M()
 </Document>";
             }
 
-            workspaceXml += @"
-    </Project>
-</Workspace>";
+            workspaceXml += """
+                    </Project>
+                </Workspace>
+                """;
 
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
@@ -271,9 +278,10 @@ void M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/784")]
         public async Task AddRemoveParameters_ExtensionMethodInAnotherFile()
         {
-            var workspaceXml = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""CSharpAssembly"" CommonReferences=""true"">";
+            var workspaceXml = """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="CSharpAssembly" CommonReferences="true">
+                """;
 
             for (var i = 0; i <= 4; i++)
             {
@@ -290,19 +298,20 @@ void M()
 </Document>";
             }
 
-            workspaceXml += @"
-<Document FilePath = ""C5.cs"">
-public class C5
-{
-}
+            workspaceXml += """
+                <Document FilePath = "C5.cs">
+                public class C5
+                {
+                }
 
-public static class C5Ext
-{
-    public void $$Ext(this C5 c, int i, string s)
-    {
-    }
-}
-</Document>";
+                public static class C5Ext
+                {
+                    public void $$Ext(this C5 c, int i, string s)
+                    {
+                    }
+                }
+                </Document>
+                """;
 
             for (var i = 6; i <= 9; i++)
             {
@@ -319,9 +328,10 @@ void M()
 </Document>";
             }
 
-            workspaceXml += @"
-    </Project>
-</Workspace>";
+            workspaceXml += """
+                    </Project>
+                </Workspace>
+                """;
 
             var updatedSignature = new[] {
                 new AddedParameterOrExistingIndex(0),
@@ -353,9 +363,9 @@ void M()
         [Trait(Traits.Feature, Traits.Features.Interactive)]
         public void ChangeSignatureCommandDisabledInSubmission()
         {
-            using var workspace = TestWorkspace.Create(XElement.Parse(@"
+            using var workspace = TestWorkspace.Create(XElement.Parse("""
                 <Workspace>
-                    <Submission Language=""C#"" CommonReferences=""true"">  
+                    <Submission Language="C#" CommonReferences="true">  
                         class C
                         {
                             void M$$(int x)
@@ -363,7 +373,8 @@ class C
                             }
                         }
                     </Submission>
-                </Workspace> "),
+                </Workspace>
+                """),
                 workspaceKind: WorkspaceKind.Interactive,
                 composition: EditorTestCompositions.EditorFeaturesWpf);
             // Force initialization.
@@ -384,27 +395,29 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/44126")]
         public async Task RemoveParameters_ImplicitObjectCreation()
         {
-            var markup = @"
-public class C
-{
-    public $$C(int a, string b) { }
+            var markup = """
+                public class C
+                {
+                    public $$C(int a, string b) { }
 
-    void M()
-    {
-        C c = new(1, ""b"");
-    }
-}";
+                    void M()
+                    {
+                        C c = new(1, "b");
+                    }
+                }
+                """;
             var updatedSignature = new[] { 1 };
-            var updatedCode = @"
-public class C
-{
-    public C(string b) { }
+            var updatedCode = """
+                public class C
+                {
+                    public C(string b) { }
 
-    void M()
-    {
-        C c = new(""b"");
-    }
-}";
+                    void M()
+                    {
+                        C c = new("b");
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -413,20 +426,22 @@ void M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/66547")]
         public async Task RemoveParameters_SpecialSymbolNamedParameter()
         {
-            var markup = @"
-void $$m(object? param, bool @new = true)
-{
-}
+            var markup = """
+                void $$m(object? param, bool @new = true)
+                {
+                }
 
-m(null, @new: false);";
+                m(null, @new: false);
+                """;
 
             var updatedSignature = new[] { 1 };
-            var updatedCode = @"
-void m(bool @new = true)
-{
-}
+            var updatedCode = """
+                void m(bool @new = true)
+                {
+                }
 
-m(@new: false);";
+                m(@new: false);
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: updatedSignature, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.Cascading.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.Cascading.cs
index 7f41394a4506e..66c240851c7e9 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.Cascading.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.Cascading.cs
@@ -18,29 +18,31 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task ReorderParameters_Cascade_ToImplementedMethod()
         {
-            var markup = @"
-interface I
-{
-    void M(int x, string y);
-}
-
-class C : I
-{
-    $$public void M(int x, string y)
-    { }
-}";
+            var markup = """
+                interface I
+                {
+                    void M(int x, string y);
+                }
+
+                class C : I
+                {
+                    $$public void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-interface I
-{
-    void M(string y, int x);
-}
-
-class C : I
-{
-    public void M(string y, int x)
-    { }
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, int x);
+                }
+
+                class C : I
+                {
+                    public void M(string y, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -48,29 +50,31 @@ public void M(string y, int x)
         [Fact]
         public async Task ReorderParameters_Cascade_ToImplementedMethod_WithTuples()
         {
-            var markup = @"
-interface I
-{
-    void M((int, int) x, (string a, string b) y);
-}
-
-class C : I
-{
-    $$public void M((int, int) x, (string a, string b) y)
-    { }
-}";
+            var markup = """
+                interface I
+                {
+                    void M((int, int) x, (string a, string b) y);
+                }
+
+                class C : I
+                {
+                    $$public void M((int, int) x, (string a, string b) y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-interface I
-{
-    void M((string a, string b) y, (int, int) x);
-}
-
-class C : I
-{
-    public void M((string a, string b) y, (int, int) x)
-    { }
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M((string a, string b) y, (int, int) x);
+                }
+
+                class C : I
+                {
+                    public void M((string a, string b) y, (int, int) x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -78,29 +82,31 @@ public void M((string a, string b) y, (int, int) x)
         [Fact]
         public async Task ReorderParameters_Cascade_ToImplementingMethod()
         {
-            var markup = @"
-interface I
-{
-    $$void M(int x, string y);
-}
-
-class C : I
-{
-    public void M(int x, string y)
-    { }
-}";
+            var markup = """
+                interface I
+                {
+                    $$void M(int x, string y);
+                }
+
+                class C : I
+                {
+                    public void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-interface I
-{
-    void M(string y, int x);
-}
-
-class C : I
-{
-    public void M(string y, int x)
-    { }
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, int x);
+                }
+
+                class C : I
+                {
+                    public void M(string y, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -108,31 +114,33 @@ public void M(string y, int x)
         [Fact]
         public async Task ReorderParameters_Cascade_ToOverriddenMethod()
         {
-            var markup = @"
-class B
-{
-    public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    $$public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    $$public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -140,31 +148,33 @@ public override void M(string y, int x)
         [Fact]
         public async Task ReorderParameters_Cascade_ToOverridingMethod()
         {
-            var markup = @"
-class B
-{
-    $$public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    $$public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -172,43 +182,45 @@ public override void M(string y, int x)
         [Fact]
         public async Task ReorderParameters_Cascade_ToOverriddenMethod_Transitive()
         {
-            var markup = @"
-class B
-{
-    public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    public override void M(int x, string y)
-    { }
-}
-
-class D2 : D
-{
-    $$public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    $$public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int x)
-    { }
-}
-
-class D2 : D
-{
-    public override void M(string y, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int x)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    public override void M(string y, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -216,43 +228,45 @@ public override void M(string y, int x)
         [Fact]
         public async Task ReorderParameters_Cascade_ToOverridingMethod_Transitive()
         {
-            var markup = @"
-class B
-{
-    $$public virtual void M(int x, string y)
-    { }
-}
-
-class D : B
-{
-    public override void M(int x, string y)
-    { }
-}
-
-class D2 : D
-{
-    public override void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class B
+                {
+                    $$public virtual void M(int x, string y)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    public override void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class B
-{
-    public virtual void M(string y, int x)
-    { }
-}
-
-class D : B
-{
-    public override void M(string y, int x)
-    { }
-}
-
-class D2 : D
-{
-    public override void M(string y, int x)
-    { }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public virtual void M(string y, int x)
+                    { }
+                }
+
+                class D : B
+                {
+                    public override void M(string y, int x)
+                    { }
+                }
+
+                class D2 : D
+                {
+                    public override void M(string y, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -266,26 +280,28 @@ public async Task ReorderParameters_Cascade_ToMethods_Complex()
             ////      / \   \
             ////   $$D2  D3  C
 
-            var markup = @"
-class B { public virtual void M(int x, string y) { } }
-class D : B, I { public override void M(int x, string y) { } }
-class D2 : D { public override void $$M(int x, string y) { } }
-class D3 : D { public override void M(int x, string y) { } }
-interface I { void M(int x, string y); }
-interface I2 { void M(int x, string y); }
-interface I3 : I, I2 { }
-class C : I3 { public void M(int x, string y) { } }";
+            var markup = """
+                class B { public virtual void M(int x, string y) { } }
+                class D : B, I { public override void M(int x, string y) { } }
+                class D2 : D { public override void $$M(int x, string y) { } }
+                class D3 : D { public override void M(int x, string y) { } }
+                interface I { void M(int x, string y); }
+                interface I2 { void M(int x, string y); }
+                interface I3 : I, I2 { }
+                class C : I3 { public void M(int x, string y) { } }
+                """;
 
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class B { public virtual void M(string y, int x) { } }
-class D : B, I { public override void M(string y, int x) { } }
-class D2 : D { public override void M(string y, int x) { } }
-class D3 : D { public override void M(string y, int x) { } }
-interface I { void M(string y, int x); }
-interface I2 { void M(string y, int x); }
-interface I3 : I, I2 { }
-class C : I3 { public void M(string y, int x) { } }";
+            var updatedCode = """
+                class B { public virtual void M(string y, int x) { } }
+                class D : B, I { public override void M(string y, int x) { } }
+                class D2 : D { public override void M(string y, int x) { } }
+                class D3 : D { public override void M(string y, int x) { } }
+                interface I { void M(string y, int x); }
+                interface I2 { void M(string y, int x); }
+                interface I3 : I, I2 { }
+                class C : I3 { public void M(string y, int x) { } }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -293,83 +309,85 @@ class C : I3 { public void M(string y, int x) { } }";
         [Fact]
         public async Task ReorderParameters_Cascade_ToMethods_WithDifferentParameterNames()
         {
-            var markup = @"
-public class B
-{
-    /// <param name=""x""></param>
-    /// <param name=""y""></param>
-    public virtual int M(int x, string y)
-    {
-        return 1;
-    }
-}
-
-public class D : B
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    public override int M(int a, string b)
-    {
-        return 1;
-    }
-}
-
-public class D2 : D
-{
-    /// <param name=""y""></param>
-    /// <param name=""x""></param>
-    public override int $$M(int y, string x)
-    {
-        M(1, ""Two"");
-        ((D)this).M(1, ""Two"");
-        ((B)this).M(1, ""Two"");
-
-        M(1, x: ""Two"");
-        ((D)this).M(1, b: ""Two"");
-        ((B)this).M(1, y: ""Two"");
-
-        return 1;
-    }
-}";
+            var markup = """
+                public class B
+                {
+                    /// <param name="x"></param>
+                    /// <param name="y"></param>
+                    public virtual int M(int x, string y)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D : B
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    public override int M(int a, string b)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D2 : D
+                {
+                    /// <param name="y"></param>
+                    /// <param name="x"></param>
+                    public override int $$M(int y, string x)
+                    {
+                        M(1, "Two");
+                        ((D)this).M(1, "Two");
+                        ((B)this).M(1, "Two");
+
+                        M(1, x: "Two");
+                        ((D)this).M(1, b: "Two");
+                        ((B)this).M(1, y: "Two");
+
+                        return 1;
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-public class B
-{
-    /// <param name=""y""></param>
-    /// <param name=""x""></param>
-    public virtual int M(string y, int x)
-    {
-        return 1;
-    }
-}
-
-public class D : B
-{
-    /// <param name=""b""></param>
-    /// <param name=""a""></param>
-    public override int M(string b, int a)
-    {
-        return 1;
-    }
-}
-
-public class D2 : D
-{
-    /// <param name=""x""></param>
-    /// <param name=""y""></param>
-    public override int M(string x, int y)
-    {
-        M(""Two"", 1);
-        ((D)this).M(""Two"", 1);
-        ((B)this).M(""Two"", 1);
-
-        M(x: ""Two"", y: 1);
-        ((D)this).M(b: ""Two"", a: 1);
-        ((B)this).M(y: ""Two"", x: 1);
-
-        return 1;
-    }
-}";
+            var updatedCode = """
+                public class B
+                {
+                    /// <param name="y"></param>
+                    /// <param name="x"></param>
+                    public virtual int M(string y, int x)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D : B
+                {
+                    /// <param name="b"></param>
+                    /// <param name="a"></param>
+                    public override int M(string b, int a)
+                    {
+                        return 1;
+                    }
+                }
+
+                public class D2 : D
+                {
+                    /// <param name="x"></param>
+                    /// <param name="y"></param>
+                    public override int M(string x, int y)
+                    {
+                        M("Two", 1);
+                        ((D)this).M("Two", 1);
+                        ((B)this).M("Two", 1);
+
+                        M(x: "Two", y: 1);
+                        ((D)this).M(b: "Two", a: 1);
+                        ((B)this).M(y: "Two", x: 1);
+
+                        return 1;
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationErrors.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationErrors.cs
index 0d34506490eeb..e77c9faef8170 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationErrors.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationErrors.cs
@@ -19,14 +19,15 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnClassName_ShouldFail()
         {
-            var markup = @"
-using System;
-class MyClass$$
-{
-    public void Goo(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass$$
+                {
+                    public void Goo(int x, string y)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, expectedSuccess: false, expectedFailureReason: ChangeSignatureFailureKind.IncorrectKind);
         }
@@ -34,16 +35,17 @@ public void Goo(int x, string y)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnField_ShouldFail()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    int t$$ = 2;
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    int t$$ = 2;
 
-    public void Goo(int x, string y)
-    {
-    }
-}";
+                    public void Goo(int x, string y)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, expectedSuccess: false, expectedFailureReason: ChangeSignatureFailureKind.IncorrectKind);
         }
@@ -58,14 +60,15 @@ public async Task ReorderMethodParameters_CanBeStartedEvenWithNoParameters()
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnOverloadedOperator_ShouldFail()
         {
-            var markup = @"
-class C
-{
-    public static C $$operator +(C a, C b)
-    {
-        return null;
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public static C $$operator +(C a, C b)
+                    {
+                        return null;
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, expectedSuccess: false, expectedFailureReason: ChangeSignatureFailureKind.IncorrectKind);
         }
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationLocation.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationLocation.cs
index 6d0ba4f85714f..0da679565e7e6 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationLocation.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.InvocationLocation.cs
@@ -21,23 +21,25 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task ReorderMethodParameters_InvokeBeforeMethodName()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void $$Goo(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void $$Goo(int x, string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 0);
@@ -46,23 +48,25 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderMethodParameters_InvokeInParameterList()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, $$string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, $$string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 1);
@@ -71,23 +75,25 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderMethodParameters_InvokeAfterParameterList()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)$$
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)$$
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -95,23 +101,25 @@ public void Goo(string y, int x)
         [Fact]
         public async Task ReorderMethodParameters_InvokeBeforeMethodDeclaration()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    $$public void Goo(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    $$public void Goo(int x, string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -119,14 +127,15 @@ public void Goo(string y, int x)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnMetadataReference_InIdentifier_ShouldFail()
         {
-            var markup = @"
-class C
-{
-    static void Main(string[] args)
-    {
-        ((System.IFormattable)null).ToSt$$ring(""test"", null);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        ((System.IFormattable)null).ToSt$$ring("test", null);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, expectedSuccess: false, expectedFailureReason: ChangeSignatureFailureKind.DefinedInMetadata);
         }
@@ -134,14 +143,15 @@ static void Main(string[] args)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnMetadataReference_AtBeginningOfInvocation_ShouldFail()
         {
-            var markup = @"
-class C
-{
-    static void Main(string[] args)
-    {
-        $$((System.IFormattable)null).ToString(""test"", null);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        $$((System.IFormattable)null).ToString("test", null);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, expectedSuccess: false, expectedFailureReason: ChangeSignatureFailureKind.DefinedInMetadata);
         }
@@ -149,14 +159,15 @@ static void Main(string[] args)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnMetadataReference_InArgumentsOfInvocation_ShouldFail()
         {
-            var markup = @"
-class C
-{
-    static void Main(string[] args)
-    {
-        ((System.IFormattable)null).ToString(""test"",$$ null);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        ((System.IFormattable)null).ToString("test",$$ null);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, expectedSuccess: false, expectedFailureReason: ChangeSignatureFailureKind.DefinedInMetadata);
         }
@@ -164,11 +175,12 @@ static void Main(string[] args)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnMetadataReference_AfterInvocation_ShouldFail()
         {
-            var markup = @"
-class C
-{
-    string s = ((System.IFormattable)null).ToString(""test"", null)$$;
-}";
+            var markup = """
+                class C
+                {
+                    string s = ((System.IFormattable)null).ToString("test", null)$$;
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, expectedSuccess: false, expectedFailureReason: ChangeSignatureFailureKind.IncorrectKind);
         }
@@ -176,15 +188,16 @@ class C
         [Fact]
         public async Task ReorderMethodParameters_InvokeInMethodBody_ViaCommand()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        $$
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        $$
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(
                 LanguageNames.CSharp, markup, expectedSuccess: false);
@@ -193,15 +206,16 @@ await TestChangeSignatureViaCommandAsync(
         [Fact]
         public async Task ReorderMethodParameters_InvokeInMethodBody_ViaSmartTag()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        [||]
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        [||]
+                    }
+                }
+                """;
 
             await TestMissingAsync(markup);
         }
@@ -209,33 +223,35 @@ public void Goo(int x, string y)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_BeginningOfIdentifier()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        $$Bar(x, y);
-    }
-
-    public void Bar(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        $$Bar(x, y);
+                    }
+
+                    public void Bar(int x, string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar(y, x);
-    }
-
-    public void Bar(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar(y, x);
+                    }
+
+                    public void Bar(string y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -243,33 +259,35 @@ public void Bar(string y, int x)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_ArgumentList()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        $$Bar(x, y);
-    }
-
-    public void Bar(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        $$Bar(x, y);
+                    }
+
+                    public void Bar(int x, string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar(y, x);
-    }
-
-    public void Bar(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar(y, x);
+                    }
+
+                    public void Bar(string y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -277,43 +295,45 @@ public void Bar(string y, int x)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_NestedCalls1()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar($$Baz(x, y), y);
-    }
-
-    public void Bar(int x, string y)
-    {
-    }
-
-    public int Baz(int x, string y)
-    {
-        return 1;
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar($$Baz(x, y), y);
+                    }
+
+                    public void Bar(int x, string y)
+                    {
+                    }
+
+                    public int Baz(int x, string y)
+                    {
+                        return 1;
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar(Baz(y, x), y);
-    }
-
-    public void Bar(int x, string y)
-    {
-    }
-
-    public int Baz(string y, int x)
-    {
-        return 1;
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar(Baz(y, x), y);
+                    }
+
+                    public void Bar(int x, string y)
+                    {
+                    }
+
+                    public int Baz(string y, int x)
+                    {
+                        return 1;
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -321,43 +341,45 @@ public int Baz(string y, int x)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_NestedCalls2()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar$$(Baz(x, y), y);
-    }
-
-    public void Bar(int x, string y)
-    {
-    }
-
-    public int Baz(int x, string y)
-    {
-        return 1;
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar$$(Baz(x, y), y);
+                    }
+
+                    public void Bar(int x, string y)
+                    {
+                    }
+
+                    public int Baz(int x, string y)
+                    {
+                        return 1;
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar(y, Baz(x, y));
-    }
-
-    public void Bar(string y, int x)
-    {
-    }
-
-    public int Baz(int x, string y)
-    {
-        return 1;
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar(y, Baz(x, y));
+                    }
+
+                    public void Bar(string y, int x)
+                    {
+                    }
+
+                    public int Baz(int x, string y)
+                    {
+                        return 1;
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -365,43 +387,45 @@ public int Baz(int x, string y)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_NestedCalls3()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar(Baz(x, y), $$y);
-    }
-
-    public void Bar(int x, string y)
-    {
-    }
-
-    public int Baz(int x, string y)
-    {
-        return 1;
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar(Baz(x, y), $$y);
+                    }
+
+                    public void Bar(int x, string y)
+                    {
+                    }
+
+                    public int Baz(int x, string y)
+                    {
+                        return 1;
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        Bar(y, Baz(x, y));
-    }
-
-    public void Bar(string y, int x)
-    {
-    }
-
-    public int Baz(int x, string y)
-    {
-        return 1;
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        Bar(y, Baz(x, y));
+                    }
+
+                    public void Bar(string y, int x)
+                    {
+                    }
+
+                    public int Baz(int x, string y)
+                    {
+                        return 1;
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -409,27 +433,29 @@ public int Baz(int x, string y)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_Attribute()
         {
-            var markup = @"
-using System;
-
-[$$My(1, 2)]
-class MyAttribute : Attribute
-{
-    public MyAttribute(int x, int y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+
+                [$$My(1, 2)]
+                class MyAttribute : Attribute
+                {
+                    public MyAttribute(int x, int y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-
-[My(2, 1)]
-class MyAttribute : Attribute
-{
-    public MyAttribute(int y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+
+                [My(2, 1)]
+                class MyAttribute : Attribute
+                {
+                    public MyAttribute(int y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -437,21 +463,23 @@ public MyAttribute(int y, int x)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_OnlyHasCandidateSymbols()
         {
-            var markup = @"
-class Test
-{
-    void M(int x, string y) { }
-    void M(int x, double y) { }
-    void M2() { $$M(""s"", 1); }
-}";
+            var markup = """
+                class Test
+                {
+                    void M(int x, string y) { }
+                    void M(int x, double y) { }
+                    void M2() { $$M("s", 1); }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Test
-{
-    void M(string y, int x) { }
-    void M(int x, double y) { }
-    void M2() { M(1, ""s""); }
-}";
+            var updatedCode = """
+                class Test
+                {
+                    void M(string y, int x) { }
+                    void M(int x, double y) { }
+                    void M2() { M(1, "s"); }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -459,29 +487,31 @@ void M(int x, double y) { }
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_CallToOtherConstructor()
         {
-            var markup = @"
-class Program
-{
-    public Program(int x, int y) : this(1, 2, 3)$$
-    {
-    }
-
-    public Program(int x, int y, int z)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    public Program(int x, int y) : this(1, 2, 3)$$
+                    {
+                    }
+
+                    public Program(int x, int y, int z)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    public Program(int x, int y) : this(3, 2, 1)
-    {
-    }
-
-    public Program(int z, int y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    public Program(int x, int y) : this(3, 2, 1)
+                    {
+                    }
+
+                    public Program(int z, int y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -489,35 +519,37 @@ public Program(int z, int y, int x)
         [Fact]
         public async Task ReorderMethodParameters_InvokeOnReference_CallToBaseConstructor()
         {
-            var markup = @"
-class B
-{
-    public B(int a, int b)
-    {
-    }
-}
-
-class D : B
-{
-    public D(int x, int y) : base(1, 2)$$
-    {
-    }
-}";
+            var markup = """
+                class B
+                {
+                    public B(int a, int b)
+                    {
+                    }
+                }
+
+                class D : B
+                {
+                    public D(int x, int y) : base(1, 2)$$
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class B
-{
-    public B(int b, int a)
-    {
-    }
-}
-
-class D : B
-{
-    public D(int x, int y) : base(2, 1)
-    {
-    }
-}";
+            var updatedCode = """
+                class B
+                {
+                    public B(int b, int a)
+                    {
+                    }
+                }
+
+                class D : B
+                {
+                    public D(int x, int y) : base(2, 1)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -529,25 +561,27 @@ public D(int x, int y) : base(2, 1)
         [Fact]
         public async Task ReorderIndexerParameters_InvokeAtBeginningOfDeclaration()
         {
-            var markup = @"
-class Program
-{
-    $$int this[int x, string y]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    $$int this[int x, string y]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    int this[string y, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    int this[string y, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 0);
@@ -556,25 +590,27 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderIndexerParameters_InParameters()
         {
-            var markup = @"
-class Program
-{
-    int this[int x, $$string y]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    int this[int x, $$string y]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    int this[string y, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    int this[string y, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 1);
@@ -583,25 +619,27 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderIndexerParameters_InvokeAtEndOfDeclaration()
         {
-            var markup = @"
-class Program
-{
-    int this[int x, string y]$$
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    int this[int x, string y]$$
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    int this[string y, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    int this[string y, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 0);
@@ -610,25 +648,27 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderIndexerParameters_InvokeInAccessor()
         {
-            var markup = @"
-class Program
-{
-    int this[int x, string y]
-    {
-        get { return $$5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    int this[int x, string y]
+                    {
+                        get { return $$5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    int this[string y, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    int this[string y, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -636,35 +676,37 @@ class Program
         [Fact]
         public async Task ReorderIndexerParameters_InvokeOnReference_BeforeTarget()
         {
-            var markup = @"
-class Program
-{
-    void M(Program p)
-    {
-        var t = $$p[5, ""test""];
-    }
-
-    int this[int x, string y]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M(Program p)
+                    {
+                        var t = $$p[5, "test"];
+                    }
+
+                    int this[int x, string y]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    void M(Program p)
-    {
-        var t = p[""test"", 5];
-    }
-
-    int this[string y, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    void M(Program p)
+                    {
+                        var t = p["test", 5];
+                    }
+
+                    int this[string y, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -672,35 +714,37 @@ void M(Program p)
         [Fact]
         public async Task ReorderIndexerParameters_InvokeOnReference_InArgumentList()
         {
-            var markup = @"
-class Program
-{
-    void M(Program p)
-    {
-        var t = p[5, ""test""$$];
-    }
-
-    int this[int x, string y]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M(Program p)
+                    {
+                        var t = p[5, "test"$$];
+                    }
+
+                    int this[int x, string y]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    void M(Program p)
-    {
-        var t = p[""test"", 5];
-    }
-
-    int this[string y, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    void M(Program p)
+                    {
+                        var t = p["test", 5];
+                    }
+
+                    int this[string y, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 0);
@@ -713,27 +757,29 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderDelegateParameters_ObjectCreation1()
         {
-            var markup = @"
-public class C
-{
-    void T()
-    {
-        var d = new $$D((x, y) => { });
-    }
-
-    public delegate void D(int x, int y);
-}";
+            var markup = """
+                public class C
+                {
+                    void T()
+                    {
+                        var d = new $$D((x, y) => { });
+                    }
+
+                    public delegate void D(int x, int y);
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    void T()
-    {
-        var d = new D((y, x) => { });
-    }
-
-    public delegate void D(int y, int x);
-}";
+            var updatedCode = """
+                public class C
+                {
+                    void T()
+                    {
+                        var d = new D((y, x) => { });
+                    }
+
+                    public delegate void D(int y, int x);
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 0);
@@ -742,31 +788,33 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderDelegateParameters_ObjectCreation2()
         {
-            var markup = @"
-public class CD<T>
-{
-    public delegate void D(T t, T u);
-}
-class Test
-{
-    public void M()
-    {
-        var dele = new CD<int>.$$D((int x, int y) => { });
-    }
-}";
+            var markup = """
+                public class CD<T>
+                {
+                    public delegate void D(T t, T u);
+                }
+                class Test
+                {
+                    public void M()
+                    {
+                        var dele = new CD<int>.$$D((int x, int y) => { });
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-public class CD<T>
-{
-    public delegate void D(T u, T t);
-}
-class Test
-{
-    public void M()
-    {
-        var dele = new CD<int>.D((int y, int x) => { });
-    }
-}";
+            var updatedCode = """
+                public class CD<T>
+                {
+                    public delegate void D(T u, T t);
+                }
+                class Test
+                {
+                    public void M()
+                    {
+                        var dele = new CD<int>.D((int y, int x) => { });
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -777,98 +825,106 @@ public void M()
         [Fact]
         public async Task ReorderMethodParameters_CodeRefactoring_InvokeBeforeMethodName()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void [||]Goo(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void [||]Goo(int x, string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, int x)
+                    {
+                    }
+                }
+                """;
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: true, updatedSignature: permutation, expectedCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderMethodParameters_CodeRefactoring_NotInMethodBody()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void Goo(int x, string y)
-    {
-        [||]
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(int x, string y)
+                    {
+                        [||]
+                    }
+                }
+                """;
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
 
         [Fact]
         public async Task ReorderMethodParameters_CodeRefactoring_InLambda()
         {
-            var markup = @"
-class Program
-{
-    void M(int x)
-    {
-        System.Func<int, int, int> f = (a, b)[||] => { return a; };
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M(int x)
+                    {
+                        System.Func<int, int, int> f = (a, b)[||] => { return a; };
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    void M(int x)
-    {
-        System.Func<int, int, int> f = (b, a) => { return a; };
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    void M(int x)
+                    {
+                        System.Func<int, int, int> f = (b, a) => { return a; };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: true, updatedSignature: permutation, expectedCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderMethodParameters_CodeRefactoring_NotInLambdaBody()
         {
-            var markup = @"
-class Program
-{
-    void M(int x)
-    {
-        System.Func<int, int, int> f = (a, b) => { [||]return a; };
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M(int x)
+                    {
+                        System.Func<int, int, int> f = (a, b) => { [||]return a; };
+                    }
+                }
+                """;
             await TestChangeSignatureViaCodeActionAsync(markup, expectedCodeAction: false);
         }
 
         [Fact]
         public async Task ReorderMethodParameters_CodeRefactoring_AtCallSite_ViaCommand()
         {
-            var markup = @"
-class Program
-{
-    void M(int x, int y)
-    {
-        M($$5, 6);
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M(int x, int y)
+                    {
+                        M($$5, 6);
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    void M(int y, int x)
-    {
-        M(6, 5);
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    void M(int y, int x)
+                    {
+                        M(6, 5);
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(
                 LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode);
@@ -877,14 +933,15 @@ await TestChangeSignatureViaCommandAsync(
         [Fact]
         public async Task ReorderMethodParameters_CodeRefactoring_AtCallSite_ViaCodeAction()
         {
-            var markup = @"
-class Program
-{
-    void M(int x, int y)
-    {
-        M([||]5, 6);
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M(int x, int y)
+                    {
+                        M([||]5, 6);
+                    }
+                }
+                """;
             await TestMissingAsync(markup);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.cs b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.cs
index 24d17965507f5..522a17bc28c57 100644
--- a/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.cs
+++ b/src/EditorFeatures/CSharpTest/ChangeSignature/ReorderParametersTests.cs
@@ -18,31 +18,33 @@ public partial class ChangeSignatureTests : AbstractChangeSignatureTests
         [Fact]
         public async Task ReorderLocalFunctionParametersAndArguments_OnDeclaration()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        Goo(1, 2);
-        void $$Goo(int x, string y)
-        {
-        }
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        Goo(1, 2);
+                        void $$Goo(int x, string y)
+                        {
+                        }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        Goo(2, 1);
-        void Goo(string y, int x)
-        {
-        }
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        Goo(2, 1);
+                        void Goo(string y, int x)
+                        {
+                        }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -50,31 +52,33 @@ void Goo(string y, int x)
         [Fact]
         public async Task ReorderLocalFunctionParametersAndArguments_OnInvocation()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        $$Goo(1, null);
-        void Goo(int x, string y)
-        {
-        }
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        $$Goo(1, null);
+                        void Goo(int x, string y)
+                        {
+                        }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void M()
-    {
-        Goo(null, 1);
-        void Goo(string y, int x)
-        {
-        }
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void M()
+                    {
+                        Goo(null, 1);
+                        void Goo(string y, int x)
+                        {
+                        }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -82,23 +86,25 @@ void Goo(string y, int x)
         [Fact]
         public async Task ReorderMethodParameters()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void $$Goo(int x, string y)
-    {
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void $$Goo(int x, string y)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -106,25 +112,27 @@ public void Goo(string y, int x)
         [Fact]
         public async Task ReorderMethodParametersAndArguments()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public void $$Goo(int x, string y)
-    {
-        Goo(3, ""hello"");
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public void $$Goo(int x, string y)
+                    {
+                        Goo(3, "hello");
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public void Goo(string y, int x)
-    {
-        Goo(""hello"", 3);
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public void Goo(string y, int x)
+                    {
+                        Goo("hello", 3);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -132,25 +140,27 @@ public void Goo(string y, int x)
         [Fact]
         public async Task ReorderMethodParametersAndArgumentsOfNestedCalls()
         {
-            var markup = @"
-using System;
-class MyClass
-{
-    public int $$Goo(int x, string y)
-    {
-        return Goo(Goo(4, ""inner""), ""outer"");
-    }
-}";
+            var markup = """
+                using System;
+                class MyClass
+                {
+                    public int $$Goo(int x, string y)
+                    {
+                        return Goo(Goo(4, "inner"), "outer");
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-class MyClass
-{
-    public int Goo(string y, int x)
-    {
-        return Goo(""outer"", Goo(""inner"", 4));
-    }
-}";
+            var updatedCode = """
+                using System;
+                class MyClass
+                {
+                    public int Goo(string y, int x)
+                    {
+                        return Goo("outer", Goo("inner", 4));
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -158,49 +168,51 @@ public int Goo(string y, int x)
         [Fact]
         public async Task ReorderConstructorParametersAndArguments()
         {
-            var markup = @"
-using System;
-
-class MyClass2 : MyClass
-{
-    public MyClass2() : base(5, ""test2"")
-    {
-    }
-}
-
-class MyClass
-{
-    public MyClass() : this(2, ""test"")
-    {
-    }
-
-    public $$MyClass(int x, string y)
-    {
-        var t = new MyClass(x, y);
-    }
-}";
+            var markup = """
+                using System;
+
+                class MyClass2 : MyClass
+                {
+                    public MyClass2() : base(5, "test2")
+                    {
+                    }
+                }
+
+                class MyClass
+                {
+                    public MyClass() : this(2, "test")
+                    {
+                    }
+
+                    public $$MyClass(int x, string y)
+                    {
+                        var t = new MyClass(x, y);
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-
-class MyClass2 : MyClass
-{
-    public MyClass2() : base(""test2"", 5)
-    {
-    }
-}
-
-class MyClass
-{
-    public MyClass() : this(""test"", 2)
-    {
-    }
-
-    public MyClass(string y, int x)
-    {
-        var t = new MyClass(y, x);
-    }
-}";
+            var updatedCode = """
+                using System;
+
+                class MyClass2 : MyClass
+                {
+                    public MyClass2() : base("test2", 5)
+                    {
+                    }
+                }
+
+                class MyClass
+                {
+                    public MyClass() : this("test", 2)
+                    {
+                    }
+
+                    public MyClass(string y, int x)
+                    {
+                        var t = new MyClass(y, x);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -208,49 +220,51 @@ public MyClass(string y, int x)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44126")]
         public async Task ReorderConstructorParametersAndArguments_ImplicitObjectCreation()
         {
-            var markup = @"
-using System;
-
-class MyClass2 : MyClass
-{
-    public MyClass2() : base(5, ""test2"")
-    {
-    }
-}
-
-class MyClass
-{
-    public MyClass() : this(2, ""test"")
-    {
-    }
-
-    public MyClass(int x, string y)
-    {
-        MyClass t = new$$(x, y);
-    }
-}";
+            var markup = """
+                using System;
+
+                class MyClass2 : MyClass
+                {
+                    public MyClass2() : base(5, "test2")
+                    {
+                    }
+                }
+
+                class MyClass
+                {
+                    public MyClass() : this(2, "test")
+                    {
+                    }
+
+                    public MyClass(int x, string y)
+                    {
+                        MyClass t = new$$(x, y);
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-using System;
-
-class MyClass2 : MyClass
-{
-    public MyClass2() : base(""test2"", 5)
-    {
-    }
-}
-
-class MyClass
-{
-    public MyClass() : this(""test"", 2)
-    {
-    }
-
-    public MyClass(string y, int x)
-    {
-        MyClass t = new(y, x);
-    }
-}";
+            var updatedCode = """
+                using System;
+
+                class MyClass2 : MyClass
+                {
+                    public MyClass2() : base("test2", 5)
+                    {
+                    }
+                }
+
+                class MyClass
+                {
+                    public MyClass() : this("test", 2)
+                    {
+                    }
+
+                    public MyClass(string y, int x)
+                    {
+                        MyClass t = new(y, x);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -258,31 +272,33 @@ public MyClass(string y, int x)
         [Fact]
         public async Task ReorderAttributeConstructorParametersAndArguments()
         {
-            var markup = @"
-[My(""test"", 8)]
-class MyClass
-{
-}
-
-class MyAttribute : System.Attribute
-{
-    public MyAttribute(string x, int y)$$
-    {
-    }
-}";
+            var markup = """
+                [My("test", 8)]
+                class MyClass
+                {
+                }
+
+                class MyAttribute : System.Attribute
+                {
+                    public MyAttribute(string x, int y)$$
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-[My(8, ""test"")]
-class MyClass
-{
-}
-
-class MyAttribute : System.Attribute
-{
-    public MyAttribute(int y, string x)
-    {
-    }
-}";
+            var updatedCode = """
+                [My(8, "test")]
+                class MyClass
+                {
+                }
+
+                class MyAttribute : System.Attribute
+                {
+                    public MyAttribute(int y, string x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -290,35 +306,37 @@ public MyAttribute(int y, string x)
         [Fact]
         public async Task ReorderExtensionMethodParametersAndArguments_StaticCall()
         {
-            var markup = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 1, 2, ""three"", ""four"", ""five"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this $$C goo, int x, int y, string a = ""test_a"", string b = ""test_b"", string c = ""test_c"")
-    { }
-}";
+            var markup = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 1, 2, "three", "four", "five");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this $$C goo, int x, int y, string a = "test_a", string b = "test_b", string c = "test_c")
+                    { }
+                }
+                """;
             var permutation = new[] { 0, 2, 1, 5, 4, 3 };
-            var updatedCode = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 2, 1, ""five"", ""four"", ""three"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int y, int x, string c = ""test_c"", string b = ""test_b"", string a = ""test_a"")
-    { }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 2, 1, "five", "four", "three");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int y, int x, string c = "test_c", string b = "test_b", string a = "test_a")
+                    { }
+                }
+                """;
 
             // Although the `ParameterConfig` has 0 for the `SelectedIndex`, the UI dialog will make an adjustment
             // and select parameter `y` instead because the `this` parameter cannot be moved or removed.
@@ -329,35 +347,37 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderExtensionMethodParametersAndArguments_ExtensionCall()
         {
-            var markup = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        new C().M(1, 2, ""three"", ""four"", ""five"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int x$$, int y, string a = ""test_a"", string b = ""test_b"", string c = ""test_c"")
-    { }
-}";
+            var markup = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        new C().M(1, 2, "three", "four", "five");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int x$$, int y, string a = "test_a", string b = "test_b", string c = "test_c")
+                    { }
+                }
+                """;
             var permutation = new[] { 0, 2, 1, 5, 4, 3 };
-            var updatedCode = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        new C().M(2, 1, ""five"", ""four"", ""three"");
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int y, int x, string c = ""test_c"", string b = ""test_b"", string a = ""test_a"")
-    { }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        new C().M(2, 1, "five", "four", "three");
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int y, int x, string c = "test_c", string b = "test_b", string a = "test_a")
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 1);
@@ -366,23 +386,25 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderParamsMethodParametersAndArguments_ParamsAsArray()
         {
-            var markup = @"
-public class C
-{
-    void $$M(int x, int y, params int[] p)
-    {
-        M(x, y, new[] { 1, 2, 3 });
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    void $$M(int x, int y, params int[] p)
+                    {
+                        M(x, y, new[] { 1, 2, 3 });
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0, 2 };
-            var updatedCode = @"
-public class C
-{
-    void M(int y, int x, params int[] p)
-    {
-        M(y, x, new[] { 1, 2, 3 });
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    void M(int y, int x, params int[] p)
+                    {
+                        M(y, x, new[] { 1, 2, 3 });
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -390,23 +412,25 @@ void M(int y, int x, params int[] p)
         [Fact]
         public async Task ReorderParamsMethodParametersAndArguments_ParamsExpanded()
         {
-            var markup = @"
-public class C
-{
-    void $$M(int x, int y, params int[] p)
-    {
-        M(x, y, 1, 2, 3);
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    void $$M(int x, int y, params int[] p)
+                    {
+                        M(x, y, 1, 2, 3);
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0, 2 };
-            var updatedCode = @"
-public class C
-{
-    void M(int y, int x, params int[] p)
-    {
-        M(y, x, 1, 2, 3);
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    void M(int y, int x, params int[] p)
+                    {
+                        M(y, x, 1, 2, 3);
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -414,41 +438,43 @@ void M(int y, int x, params int[] p)
         [Fact]
         public async Task ReorderExtensionAndParamsMethodParametersAndArguments_VariedCallsites()
         {
-            var markup = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 1, 2, ""three"", ""four"", ""five"", new[] { 6, 7, 8 });
-        CExt.M(new C(), 1, 2, ""three"", ""four"", ""five"", 6, 7, 8);
-        new C().M(1, 2, ""three"", ""four"", ""five"", new[] { 6, 7, 8 });
-        new C().M(1, 2, ""three"", ""four"", ""five"", 6, 7, 8);
-    }
-}
-
-public static class CExt
-{
-    public static void $$M(this C goo, int x, int y, string a = ""test_a"", string b = ""test_b"", string c = ""test_c"", params int[] p)
-    { }
-}";
+            var markup = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 1, 2, "three", "four", "five", new[] { 6, 7, 8 });
+                        CExt.M(new C(), 1, 2, "three", "four", "five", 6, 7, 8);
+                        new C().M(1, 2, "three", "four", "five", new[] { 6, 7, 8 });
+                        new C().M(1, 2, "three", "four", "five", 6, 7, 8);
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void $$M(this C goo, int x, int y, string a = "test_a", string b = "test_b", string c = "test_c", params int[] p)
+                    { }
+                }
+                """;
             var permutation = new[] { 0, 2, 1, 5, 4, 3, 6 };
-            var updatedCode = @"
-public class C
-{
-    static void Main(string[] args)
-    {
-        CExt.M(new C(), 2, 1, ""five"", ""four"", ""three"", new[] { 6, 7, 8 });
-        CExt.M(new C(), 2, 1, ""five"", ""four"", ""three"", 6, 7, 8);
-        new C().M(2, 1, ""five"", ""four"", ""three"", new[] { 6, 7, 8 });
-        new C().M(2, 1, ""five"", ""four"", ""three"", 6, 7, 8);
-    }
-}
-
-public static class CExt
-{
-    public static void M(this C goo, int y, int x, string c = ""test_c"", string b = ""test_b"", string a = ""test_a"", params int[] p)
-    { }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    static void Main(string[] args)
+                    {
+                        CExt.M(new C(), 2, 1, "five", "four", "three", new[] { 6, 7, 8 });
+                        CExt.M(new C(), 2, 1, "five", "four", "three", 6, 7, 8);
+                        new C().M(2, 1, "five", "four", "three", new[] { 6, 7, 8 });
+                        new C().M(2, 1, "five", "four", "three", 6, 7, 8);
+                    }
+                }
+
+                public static class CExt
+                {
+                    public static void M(this C goo, int y, int x, string c = "test_c", string b = "test_b", string a = "test_a", params int[] p)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation,
                 expectedUpdatedInvocationDocumentCode: updatedCode, expectedSelectedIndex: 0);
@@ -457,37 +483,39 @@ await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSi
         [Fact]
         public async Task ReorderIndexerParametersAndArguments()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        var x = new Program()[1, 2];
-        new Program()[1, 2] = x;
-    }
-
-    public int this[int x, int y]$$
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        var x = new Program()[1, 2];
+                        new Program()[1, 2] = x;
+                    }
+
+                    public int this[int x, int y]$$
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    void M()
-    {
-        var x = new Program()[2, 1];
-        new Program()[2, 1] = x;
-    }
-
-    public int this[int y, int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    void M()
+                    {
+                        var x = new Program()[2, 1];
+                        new Program()[2, 1] = x;
+                    }
+
+                    public int this[int y, int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -495,29 +523,31 @@ void M()
         [Fact]
         public async Task ReorderParamTagsInDocComments_SingleLineDocComments_OnIndividualLines()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    /// <param name=""a""></param>
-    void Goo(int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    /// <param name="a"></param>
+                    void Goo(int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -525,25 +555,27 @@ void Goo(int c, int b, int a)
         [Fact]
         public async Task ReorderParamTagsInDocComments_SingleLineDocComments_OnSameLine()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a"">a is fun</param><param name=""b"">b is fun</param><param name=""c"">c is fun</param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a">a is fun</param><param name="b">b is fun</param><param name="c">c is fun</param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c"">c is fun</param><param name=""b"">b is fun</param><param name=""a"">a is fun</param>
-    void Goo(int c, int b, int a)
-    {
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c">c is fun</param><param name="b">b is fun</param><param name="a">a is fun</param>
+                    void Goo(int c, int b, int a)
+                    {
 
-    }
-}";
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -551,35 +583,37 @@ void Goo(int c, int b, int a)
         [Fact]
         public async Task ReorderParamTagsInDocComments_SingleLineDocComments_MixedLineDistribution()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param><param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""d""></param>
-    /// <param name=""e"">Comments spread
-    /// over several
-    /// lines</param><param name=""f""></param>
-    void $$Goo(int a, int b, int c, int d, int e, int f)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param><param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="d"></param>
+                    /// <param name="e">Comments spread
+                    /// over several
+                    /// lines</param><param name="f"></param>
+                    void $$Goo(int a, int b, int c, int d, int e, int f)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 5, 4, 3, 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""f""></param><param name=""e"">Comments spread
-    /// over several
-    /// lines</param>
-    /// <param name=""d""></param>
-    /// <param name=""c""></param>
-    /// <param name=""b""></param><param name=""a""></param>
-    void Goo(int f, int e, int d, int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="f"></param><param name="e">Comments spread
+                    /// over several
+                    /// lines</param>
+                    /// <param name="d"></param>
+                    /// <param name="c"></param>
+                    /// <param name="b"></param><param name="a"></param>
+                    void Goo(int f, int e, int d, int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -587,29 +621,31 @@ void Goo(int f, int e, int d, int c, int b, int a)
         [Fact]
         public async Task ReorderParamTagsInDocComments_SingleLineDocComments_MixedWithRegularComments()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param><param name=""b""></param>
-    // Why is there a regular comment here?
-    /// <param name=""c""></param><param name=""d""></param><param name=""e""></param>
-    void $$Goo(int a, int b, int c, int d, int e)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param><param name="b"></param>
+                    // Why is there a regular comment here?
+                    /// <param name="c"></param><param name="d"></param><param name="e"></param>
+                    void $$Goo(int a, int b, int c, int d, int e)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 4, 3, 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""e""></param><param name=""d""></param>
-    // Why is there a regular comment here?
-    /// <param name=""c""></param><param name=""b""></param><param name=""a""></param>
-    void Goo(int e, int d, int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="e"></param><param name="d"></param>
+                    // Why is there a regular comment here?
+                    /// <param name="c"></param><param name="b"></param><param name="a"></param>
+                    void Goo(int e, int d, int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -617,31 +653,33 @@ void Goo(int e, int d, int c, int b, int a)
         [Fact]
         public async Task ReorderParamTagsInDocComments_MultiLineDocComments_OnSeparateLines1()
         {
-            var markup = @"
-class Program
-{
-    /**
-     * <param name=""x"">x!</param>
-     * <param name=""y"">y!</param>
-     * <param name=""z"">z!</param>
-     */
-    static void $$M(int x, int y, int z)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    /**
+                     * <param name="x">x!</param>
+                     * <param name="y">y!</param>
+                     * <param name="z">z!</param>
+                     */
+                    static void $$M(int x, int y, int z)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    /**
-     * <param name=""z"">z!</param>
-     * <param name=""y"">y!</param>
-     * <param name=""x"">x!</param>
-     */
-    static void M(int z, int y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    /**
+                     * <param name="z">z!</param>
+                     * <param name="y">y!</param>
+                     * <param name="x">x!</param>
+                     */
+                    static void M(int z, int y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -649,23 +687,25 @@ static void M(int z, int y, int x)
         [Fact]
         public async Task ReorderParamTagsInDocComments_MultiLineDocComments_OnSingleLine()
         {
-            var markup = @"
-class Program
-{
-    /** <param name=""x"">x!</param><param name=""y"">y!</param><param name=""z"">z!</param> */
-    static void $$M(int x, int y, int z)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    /** <param name="x">x!</param><param name="y">y!</param><param name="z">z!</param> */
+                    static void $$M(int x, int y, int z)
+                    {
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-class Program
-{
-    /** <param name=""z"">z!</param><param name=""y"">y!</param><param name=""x"">x!</param> */
-    static void M(int z, int y, int x)
-    {
-    }
-}";
+            var updatedCode = """
+                class Program
+                {
+                    /** <param name="z">z!</param><param name="y">y!</param><param name="x">x!</param> */
+                    static void M(int z, int y, int x)
+                    {
+                    }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -673,201 +713,215 @@ static void M(int z, int y, int x)
         [Fact]
         public async Task ReorderParamTagsInDocComments_IncorrectOrder_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    void Goo(int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    void Goo(int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderParamTagsInDocComments_WrongNames_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a2""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a2"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a2""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    void Goo(int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a2"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    void Goo(int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderParamTagsInDocComments_InsufficientTags_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""c""></param>
-    void Goo(int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="c"></param>
+                    void Goo(int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderParamTagsInDocComments_ExcessiveTags_MaintainsOrder()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""d""></param>
-    void $$Goo(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="d"></param>
+                    void $$Goo(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    /// <param name=""d""></param>
-    void Goo(int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    /// <param name="d"></param>
+                    void Goo(int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderParamTagsInDocComments_OnConstructors()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    public $$C(int a, int b, int c)
-    {
-
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    public $$C(int a, int b, int c)
+                    {
+
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    /// <param name=""a""></param>
-    public C(int c, int b, int a)
-    {
-
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    /// <param name="a"></param>
+                    public C(int c, int b, int a)
+                    {
+
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderParamTagsInDocComments_OnIndexers()
         {
-            var markup = @"
-public class C
-{
-    /// <param name=""a""></param>
-    /// <param name=""b""></param>
-    /// <param name=""c""></param>
-    public int $$this[int a, int b, int c]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                public class C
+                {
+                    /// <param name="a"></param>
+                    /// <param name="b"></param>
+                    /// <param name="c"></param>
+                    public int $$this[int a, int b, int c]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-public class C
-{
-    /// <param name=""c""></param>
-    /// <param name=""b""></param>
-    /// <param name=""a""></param>
-    public int this[int c, int b, int a]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var updatedCode = """
+                public class C
+                {
+                    /// <param name="c"></param>
+                    /// <param name="b"></param>
+                    /// <param name="a"></param>
+                    public int this[int c, int b, int a]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
 
         [Fact]
         public async Task ReorderParametersInCrefs()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// See <see cref=""M(int, string)""/> and <see cref=""M""/>
-    /// </summary>
-    $$void M(int x, string y)
-    { }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// See <see cref="M(int, string)"/> and <see cref="M"/>
+                    /// </summary>
+                    $$void M(int x, string y)
+                    { }
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-class C
-{
-    /// <summary>
-    /// See <see cref=""M(string, int)""/> and <see cref=""M""/>
-    /// </summary>
-    void M(string y, int x)
-    { }
-}";
+            var updatedCode = """
+                class C
+                {
+                    /// <summary>
+                    /// See <see cref="M(string, int)"/> and <see cref="M"/>
+                    /// </summary>
+                    void M(string y, int x)
+                    { }
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -875,39 +929,41 @@ void M(string y, int x)
         [Fact]
         public async Task ReorderParametersInMethodThatImplementsInterfaceMethodOnlyThroughADerivedType1()
         {
-            var markup = @"
-interface I
-{
-    $$void M(int x, string y);
-}
-
-class C
-{
-    public void M(int x, string y)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var markup = """
+                interface I
+                {
+                    $$void M(int x, string y);
+                }
+
+                class C
+                {
+                    public void M(int x, string y)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-interface I
-{
-    void M(string y, int x);
-}
-
-class C
-{
-    public void M(string y, int x)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, int x);
+                }
+
+                class C
+                {
+                    public void M(string y, int x)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -915,39 +971,41 @@ class D : C, I
         [Fact]
         public async Task ReorderParametersInMethodThatImplementsInterfaceMethodOnlyThroughADerivedType2()
         {
-            var markup = @"
-interface I
-{
-    void M(int x, string y);
-}
-
-class C
-{
-    $$public void M(int x, string y)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var markup = """
+                interface I
+                {
+                    void M(int x, string y);
+                }
+
+                class C
+                {
+                    $$public void M(int x, string y)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
             var permutation = new[] { 1, 0 };
-            var updatedCode = @"
-interface I
-{
-    void M(string y, int x);
-}
-
-class C
-{
-    public void M(string y, int x)
-    {
-    }
-}
-
-class D : C, I
-{
-}";
+            var updatedCode = """
+                interface I
+                {
+                    void M(string y, int x);
+                }
+
+                class C
+                {
+                    public void M(string y, int x)
+                    {
+                    }
+                }
+
+                class D : C, I
+                {
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -955,23 +1013,25 @@ class D : C, I
         [Fact]
         public async Task ReorderParamTagsInDocComments_Record()
         {
-            var markup = @"
-/// <param name=""A""></param>
-/// <param name=""B""></param>
-/// <param name=""C""></param>
-record $$R(int A, int B, int C)
-{
-    public static R Instance = new(0, 1, 2);
-}";
+            var markup = """
+                /// <param name="A"></param>
+                /// <param name="B"></param>
+                /// <param name="C"></param>
+                record $$R(int A, int B, int C)
+                {
+                    public static R Instance = new(0, 1, 2);
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-/// <param name=""C""></param>
-/// <param name=""B""></param>
-/// <param name=""A""></param>
-record R(int C, int B, int A)
-{
-    public static R Instance = new(2, 1, 0);
-}";
+            var updatedCode = """
+                /// <param name="C"></param>
+                /// <param name="B"></param>
+                /// <param name="A"></param>
+                record R(int C, int B, int A)
+                {
+                    public static R Instance = new(2, 1, 0);
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -979,23 +1039,25 @@ record R(int C, int B, int A)
         [Fact]
         public async Task ReorderParamTagsInDocComments_PrimaryConstructor_Class()
         {
-            var markup = @"
-/// <param name=""A""></param>
-/// <param name=""B""></param>
-/// <param name=""C""></param>
-class $$R(int A, int B, int C)
-{
-    public static R Instance = new(0, 1, 2);
-}";
+            var markup = """
+                /// <param name="A"></param>
+                /// <param name="B"></param>
+                /// <param name="C"></param>
+                class $$R(int A, int B, int C)
+                {
+                    public static R Instance = new(0, 1, 2);
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-/// <param name=""C""></param>
-/// <param name=""B""></param>
-/// <param name=""A""></param>
-class R(int C, int B, int A)
-{
-    public static R Instance = new(2, 1, 0);
-}";
+            var updatedCode = """
+                /// <param name="C"></param>
+                /// <param name="B"></param>
+                /// <param name="A"></param>
+                class R(int C, int B, int A)
+                {
+                    public static R Instance = new(2, 1, 0);
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
@@ -1003,23 +1065,25 @@ class R(int C, int B, int A)
         [Fact]
         public async Task ReorderParamTagsInDocComments_PrimaryConstructor_Struct()
         {
-            var markup = @"
-/// <param name=""A""></param>
-/// <param name=""B""></param>
-/// <param name=""C""></param>
-struct $$R(int A, int B, int C)
-{
-    public static R Instance = new(0, 1, 2);
-}";
+            var markup = """
+                /// <param name="A"></param>
+                /// <param name="B"></param>
+                /// <param name="C"></param>
+                struct $$R(int A, int B, int C)
+                {
+                    public static R Instance = new(0, 1, 2);
+                }
+                """;
             var permutation = new[] { 2, 1, 0 };
-            var updatedCode = @"
-/// <param name=""C""></param>
-/// <param name=""B""></param>
-/// <param name=""A""></param>
-struct R(int C, int B, int A)
-{
-    public static R Instance = new(2, 1, 0);
-}";
+            var updatedCode = """
+                /// <param name="C"></param>
+                /// <param name="B"></param>
+                /// <param name="A"></param>
+                struct R(int C, int B, int A)
+                {
+                    public static R Instance = new(2, 1, 0);
+                }
+                """;
 
             await TestChangeSignatureViaCommandAsync(LanguageNames.CSharp, markup, updatedSignature: permutation, expectedUpdatedInvocationDocumentCode: updatedCode);
         }
diff --git a/src/EditorFeatures/CSharpTest/Classification/SyntacticClassifierTests_Preprocessor.cs b/src/EditorFeatures/CSharpTest/Classification/SyntacticClassifierTests_Preprocessor.cs
index 38f081c7e5024..d5c9413138983 100644
--- a/src/EditorFeatures/CSharpTest/Classification/SyntacticClassifierTests_Preprocessor.cs
+++ b/src/EditorFeatures/CSharpTest/Classification/SyntacticClassifierTests_Preprocessor.cs
@@ -19,8 +19,10 @@ public partial class SyntacticClassifierTests
         public async Task PP_IfTrue(TestHost testHost)
         {
             var code =
-@"#if true
-#endif";
+                """
+                #if true
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -34,8 +36,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfTrueWithComment(TestHost testHost)
         {
             var code =
-@"#if true //Goo
-#endif";
+                """
+                #if true //Goo
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -50,8 +54,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfFalse(TestHost testHost)
         {
             var code =
-@"#if false
-#endif";
+                """
+                #if false
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -65,8 +71,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfGOO(TestHost testHost)
         {
             var code =
-@"#if GOO
-#endif";
+                """
+                #if GOO
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -80,8 +88,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfNotTrue(TestHost testHost)
         {
             var code =
-@"#if !true
-#endif";
+                """
+                #if !true
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -96,8 +106,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfNotFalse(TestHost testHost)
         {
             var code =
-@"#if !false
-#endif";
+                """
+                #if !false
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -112,8 +124,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfNotGOO(TestHost testHost)
         {
             var code =
-@"#if !GOO
-#endif";
+                """
+                #if !GOO
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -128,8 +142,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfTrueWithParens(TestHost testHost)
         {
             var code =
-@"#if (true)
-#endif";
+                """
+                #if (true)
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -145,8 +161,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfFalseWithParens(TestHost testHost)
         {
             var code =
-@"#if (false)
-#endif";
+                """
+                #if (false)
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -162,8 +180,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfGOOWithParens(TestHost testHost)
         {
             var code =
-@"#if (GOO)
-#endif";
+                """
+                #if (GOO)
+                #endif
+                """;
             await TestInMethodAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -179,8 +199,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfOrExpression(TestHost testHost)
         {
             var code =
-@"#if GOO || BAR
-#endif";
+                """
+                #if GOO || BAR
+                #endif
+                """;
 
             await TestInMethodAsync(code,
                 testHost,
@@ -197,8 +219,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfAndExpression(TestHost testHost)
         {
             var code =
-@"#if GOO && BAR
-#endif";
+                """
+                #if GOO && BAR
+                #endif
+                """;
 
             await TestInMethodAsync(code,
                 testHost,
@@ -215,8 +239,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfOrAndExpression(TestHost testHost)
         {
             var code =
-@"#if GOO || BAR && BAZ
-#endif";
+                """
+                #if GOO || BAR && BAZ
+                #endif
+                """;
 
             await TestInMethodAsync(code,
                 testHost,
@@ -235,8 +261,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfOrExpressionWithParens(TestHost testHost)
         {
             var code =
-@"#if (GOO || BAR)
-#endif";
+                """
+                #if (GOO || BAR)
+                #endif
+                """;
 
             await TestInMethodAsync(code,
                 testHost,
@@ -255,8 +283,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfAndExpressionWithParens(TestHost testHost)
         {
             var code =
-@"#if (GOO && BAR)
-#endif";
+                """
+                #if (GOO && BAR)
+                #endif
+                """;
 
             await TestInMethodAsync(code,
                 testHost,
@@ -275,8 +305,10 @@ await TestInMethodAsync(code,
         public async Task PP_IfOrAndExpressionWithParens(TestHost testHost)
         {
             var code =
-@"#if GOO || (BAR && BAZ)
-#endif";
+                """
+                #if GOO || (BAR && BAZ)
+                #endif
+                """;
 
             await TestInMethodAsync(code,
                 testHost,
@@ -317,8 +349,10 @@ await TestAsync(" #if goo",
         public async Task PP_If3(TestHost testHost)
         {
             var code =
-@"#if goo
-#endif";
+                """
+                #if goo
+                #endif
+                """;
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -332,8 +366,10 @@ await TestAsync(code,
         public async Task PP_If4(TestHost testHost)
         {
             var code =
-@"#if
-#endif";
+                """
+                #if
+                #endif
+                """;
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -346,17 +382,21 @@ await TestAsync(code,
         public async Task PP_If5(TestHost testHost)
         {
             var code =
-@"#if
-aoeu
-aoeu
-#endif";
+                """
+                #if
+                aoeu
+                aoeu
+                #endif
+                """;
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("if"),
-                Inactive(@"aoeu
-aoeu
-"),
+                Inactive("""
+                    aoeu
+                    aoeu
+
+                    """),
                 PPKeyword("#"),
                 PPKeyword("endif"));
         }
@@ -365,9 +405,11 @@ await TestAsync(code,
         public async Task PP_If6(TestHost testHost)
         {
             var code =
-@"#if
-#else
-aeu";
+                """
+                #if
+                #else
+                aeu
+                """;
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -381,10 +423,12 @@ await TestAsync(code,
         public async Task PP_If7(TestHost testHost)
         {
             var code =
-@"#if
-#else
-#endif
-aeu";
+                """
+                #if
+                #else
+                #endif
+                aeu
+                """;
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -401,13 +445,15 @@ await TestAsync(code,
         public async Task PP_If8(bool script, TestHost testHost)
         {
             var code =
-@"#if
-#else
-aoeu
-aoeu
-aou
-#endif
-aeu";
+                """
+                #if
+                #else
+                aoeu
+                aoeu
+                aou
+                #endif
+                aeu
+                """;
 
             var parseOptions = script ? Options.Script : null;
 
@@ -433,13 +479,15 @@ await TestAsync(
         public async Task PP_If9(bool script, TestHost testHost)
         {
             var code =
-@"#if //Goo1
-#else //Goo2
-aoeu
-aoeu
-aou
-#endif //Goo3
-aeu";
+                """
+                #if //Goo1
+                #else //Goo2
+                aoeu
+                aoeu
+                aou
+                #endif //Goo3
+                aeu
+                """;
 
             var parseOptions = script ? Options.Script : null;
 
@@ -525,8 +573,10 @@ await TestAsync("   #endregion adsf",
         public async Task PP_RegionEndRegion1(TestHost testHost)
         {
             await TestAsync(
-@"#region
-#endregion",
+                """
+                #region
+                #endregion
+                """,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("region"),
@@ -538,8 +588,10 @@ await TestAsync(
         public async Task PP_CommentAfterRegion1(TestHost testHost)
         {
             await TestAsync(
-@"#region adsf //comment
-#endregion",
+                """
+                #region adsf //comment
+                #endregion
+                """,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("region"),
@@ -552,8 +604,10 @@ await TestAsync(
         public async Task PP_CommentAfterRegion2(TestHost testHost)
         {
             await TestAsync(
-@"#region //comment
-#endregion",
+                """
+                #region //comment
+                #endregion
+                """,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("region"),
@@ -566,8 +620,10 @@ await TestAsync(
         public async Task PP_CommentAfterEndRegion1(TestHost testHost)
         {
             await TestAsync(
-@"#region
-#endregion adsf //comment",
+                """
+                #region
+                #endregion adsf //comment
+                """,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("region"),
@@ -580,8 +636,10 @@ await TestAsync(
         public async Task PP_CommentAfterEndRegion2(TestHost testHost)
         {
             await TestAsync(
-@"#region
-#endregion //comment",
+                """
+                #region
+                #endregion //comment
+                """,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("region"),
@@ -594,8 +652,10 @@ await TestAsync(
         public async Task PP_DeclarationDirectives(TestHost testHost)
         {
             await TestAsync(
-@"#define A
-#undef B",
+                """
+                #define A
+                #undef B
+                """,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("define"),
@@ -609,10 +669,12 @@ await TestAsync(
         public async Task PP_IfElseEndIfDirectives(TestHost testHost)
         {
             var code =
-@"#if true
-#elif DEBUG
-#else
-#endif";
+                """
+                #if true
+                #elif DEBUG
+                #else
+                #endif
+                """;
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -822,14 +884,18 @@ await TestAsync(code,
         [Theory, CombinatorialData]
         public async Task PP_LineNumberWithFilename(TestHost testHost)
         {
-            var code = @"#line 100 ""C:\Goo""";
+            var code = """
+                #line 100 "C:\Goo"
+                """;
 
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("line"),
                 Number("100"),
-                String("\"C:\\Goo\""));
+                String("""
+                    "C:\Goo"
+                    """));
         }
 
         [Theory, CombinatorialData]
@@ -842,14 +908,18 @@ await TestAsync(code,
                 PPKeyword("#"),
                 PPKeyword("line"),
                 Number("100"),
-                String("\"C:\\Goo\""),
+                String("""
+                    "C:\Goo"
+                    """),
                 Comment("//Goo"));
         }
 
         [Theory, CombinatorialData]
         public async Task PP_LineSpanWithCharacterOffset(TestHost testHost)
         {
-            var code = @"#line (1, 2) - (3, 4) 5 ""file.txt""";
+            var code = """
+                #line (1, 2) - (3, 4) 5 "file.txt"
+                """;
 
             await TestAsync(code,
                 testHost,
@@ -867,7 +937,9 @@ await TestAsync(code,
                 Number("4"),
                 Punctuation.CloseParen,
                 Number("5"),
-                String("\"file.txt\""));
+                String("""
+                    "file.txt"
+                    """));
         }
 
         [Theory, CombinatorialData]
@@ -890,7 +962,9 @@ await TestAsync(code,
                 Punctuation.Comma,
                 Number("4"),
                 Punctuation.CloseParen,
-                String("\"\""),
+                String("""
+                    ""
+                    """),
                 Comment("//comment"));
         }
 
@@ -1014,14 +1088,22 @@ await TestAsync(
         public async Task PP_PragmaChecksum2(TestHost testHost)
         {
             await TestAsync(
-@"#pragma checksum ""file.txt"" ""{00000000-0000-0000-0000-000000000000}"" ""2453""",
+                """
+                #pragma checksum "file.txt" "{00000000-0000-0000-0000-000000000000}" "2453"
+                """,
                 testHost,
                 PPKeyword("#"),
                 PPKeyword("pragma"),
                 PPKeyword("checksum"),
-                String("\"file.txt\""),
-                String("\"{00000000-0000-0000-0000-000000000000}\""),
-                String("\"2453\""));
+                String("""
+                    "file.txt"
+                    """),
+                String("""
+                    "{00000000-0000-0000-0000-000000000000}"
+                    """),
+                String("""
+                    "2453"
+                    """));
         }
 
         [Theory, CombinatorialData]
@@ -1033,9 +1115,15 @@ await TestAsync(
                 PPKeyword("#"),
                 PPKeyword("pragma"),
                 PPKeyword("checksum"),
-                String("\"file.txt\""),
-                String("\"{00000000-0000-0000-0000-000000000000}\""),
-                String("\"2453\""),
+                String("""
+                    "file.txt"
+                    """),
+                String("""
+                    "{00000000-0000-0000-0000-000000000000}"
+                    """),
+                String("""
+                    "2453"
+                    """),
                 Comment("// Goo"));
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Classification/SyntacticTaggerTests.cs b/src/EditorFeatures/CSharpTest/Classification/SyntacticTaggerTests.cs
index 87ed0949bb6a1..6232c7e025f2b 100644
--- a/src/EditorFeatures/CSharpTest/Classification/SyntacticTaggerTests.cs
+++ b/src/EditorFeatures/CSharpTest/Classification/SyntacticTaggerTests.cs
@@ -31,11 +31,13 @@ public class SyntacticTaggerTests
         public async Task TestTagsChangedForPortionThatChanged()
         {
             var code =
-@"class Program2
-{
-    string x = @""/// <summary>$$
-/// </summary>"";
-}";
+                """
+                class Program2
+                {
+                    string x = @"/// <summary>$$
+                /// </summary>";
+                }
+                """;
             using var workspace = TestWorkspace.CreateCSharp(code);
             var document = workspace.Documents.First();
             var subjectBuffer = document.GetTextBuffer();
@@ -74,7 +76,9 @@ public async Task TestTagsChangedForPortionThatChanged()
             checkpoint = new Checkpoint();
 
             // Now apply an edit that require us to reclassify more that just the current line
-            var snapshot = subjectBuffer.Insert(document.CursorPosition.Value, "\"");
+            var snapshot = subjectBuffer.Insert(document.CursorPosition.Value, """
+                "
+                """);
             expectedLength = snapshot.Length;
 
             // NOTE: TagsChanged is raised on the UI thread, so there is no race between
diff --git a/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests.cs b/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests.cs
index 31f1c6748c84f..4a5c135d647f2 100644
--- a/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests.cs
+++ b/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests.cs
@@ -46,11 +46,13 @@ await TestAsync(
         public async Task Bug17819(TestHost testHost)
         {
             await TestAsync(
-@"_ _()
-{
-}
-///<param name='_
-}",
+                """
+                _ _()
+                {
+                }
+                ///<param name='_
+                }
+                """,
                 testHost,
                 ParseOptions(Options.Regular),
                 Method("_"),
@@ -149,12 +151,14 @@ await TestAsync(
         public async Task VarAsConstructorName(TestHost testHost)
         {
             await TestAsync(
-@"class var
-{
-    var()
-    {
-    }
-}",
+                """
+                class var
+                {
+                    var()
+                    {
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("var"),
@@ -171,12 +175,14 @@ await TestAsync(
         public async Task TestRecordClass(TestHost testHost)
         {
             await TestAsync(
-@"record class R
-{
-    R()
-    {
-    }
-}",
+                """
+                record class R
+                {
+                    R()
+                    {
+                    }
+                }
+                """,
                 testHost,
                 Keyword("record"),
                 Keyword("class"),
@@ -194,12 +200,14 @@ await TestAsync(
         public async Task TestRecordStruct(TestHost testHost)
         {
             await TestAsync(
-@"record struct R
-{
-    R(int i)
-    {
-    }
-}",
+                """
+                record struct R
+                {
+                    R(int i)
+                    {
+                    }
+                }
+                """,
                 testHost,
                 Keyword("record"),
                 Keyword("struct"),
@@ -235,14 +243,15 @@ await TestAsync(
         [Theory, CombinatorialData]
         public async Task PartialDynamicWhere(TestHost testHost)
         {
-            var code = @"partial class partial<where> where where : partial<where>
-{
-    static dynamic dynamic<partial>()
-    {
-        return dynamic<dynamic>();
-    }
-}
-";
+            var code = """
+                partial class partial<where> where where : partial<where>
+                {
+                    static dynamic dynamic<partial>()
+                    {
+                        return dynamic<dynamic>();
+                    }
+                }
+                """;
             await TestAsync(code,
                 testHost,
                 Keyword("partial"),
@@ -303,16 +312,18 @@ await TestInMethodAsync(@"foreach (var v in args) { }",
         public async Task ValueInSetterAndAnonymousTypePropertyName(TestHost testHost)
         {
             await TestAsync(
-@"class C
-{
-    int P
-    {
-        set
-        {
-            var t = new { value = value };
-        }
-    }
-}",
+                """
+                class C
+                {
+                    int P
+                    {
+                        set
+                        {
+                            var t = new { value = value };
+                        }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("C"),
@@ -341,18 +352,20 @@ int P
         public async Task TestValueInEvent(TestHost testHost)
         {
             await TestInClassAsync(
-@"event int Bar
-{
-    add
-    {
-        this.value = value;
-    }
+                """
+                event int Bar
+                {
+                    add
+                    {
+                        this.value = value;
+                    }
 
-    remove
-    {
-        this.value = value;
-    }
-}",
+                    remove
+                    {
+                        this.value = value;
+                    }
+                }
+                """,
                 testHost,
                 Keyword("event"),
                 Keyword("int"),
@@ -384,18 +397,20 @@ await TestInClassAsync(
         public async Task TestValueInProperty(TestHost testHost)
         {
             await TestInClassAsync(
-@"int Goo
-{
-    get
-    {
-        this.value = value;
-    }
+                """
+                int Goo
+                {
+                    get
+                    {
+                        this.value = value;
+                    }
 
-    set
-    {
-        this.value = value;
-    }
-}",
+                    set
+                    {
+                        this.value = value;
+                    }
+                }
+                """,
                 testHost,
                 Keyword("int"),
                 Property("Goo"),
@@ -426,13 +441,15 @@ await TestInClassAsync(
         public async Task ValueFieldInSetterAccessedThroughThis(TestHost testHost)
         {
             await TestInClassAsync(
-@"int P
-{
-    set
-    {
-        this.value = value;
-    }
-}",
+                """
+                int P
+                {
+                    set
+                    {
+                        this.value = value;
+                    }
+                }
+                """,
                 testHost,
                 Keyword("int"),
                 Property("P"),
@@ -472,13 +489,15 @@ await TestInMethodAsync(
         public async Task TestVarConstructor(TestHost testHost)
         {
             await TestAsync(
-@"class var
-{
-    void Main()
-    {
-        new var();
-    }
-}",
+                """
+                class var
+                {
+                    void Main()
+                    {
+                        new var();
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("var"),
@@ -502,13 +521,15 @@ void Main()
         public async Task TestVarTypeParameter(TestHost testHost)
         {
             await TestAsync(
-@"class X
-{
-    void Goo<var>()
-    {
-        var x;
-    }
-}",
+                """
+                class X
+                {
+                    void Goo<var>()
+                    {
+                        var x;
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("X"),
@@ -533,12 +554,14 @@ void Goo<var>()
         public async Task TestVarAttribute1(TestHost testHost)
         {
             await TestAsync(
-@"using System;
+                """
+                using System;
 
-[var]
-class var : Attribute
-{
-}",
+                [var]
+                class var : Attribute
+                {
+                }
+                """,
                 testHost,
                 Keyword("using"),
                 Namespace("System"),
@@ -559,12 +582,14 @@ class var : Attribute
         public async Task TestVarAttribute2(TestHost testHost)
         {
             await TestAsync(
-@"using System;
+                """
+                using System;
 
-[var]
-class varAttribute : Attribute
-{
-}",
+                [var]
+                class varAttribute : Attribute
+                {
+                }
+                """,
                 testHost,
                 Keyword("using"),
                 Namespace("System"),
@@ -585,15 +610,17 @@ class varAttribute : Attribute
         public async Task TestStandaloneTypeName(TestHost testHost)
         {
             await TestAsync(
-@"using System;
+                """
+                using System;
 
-class C
-{
-    static void Main()
-    {
-        var tree = Console
-    }
-}",
+                class C
+                {
+                    static void Main()
+                    {
+                        var tree = Console
+                    }
+                }
+                """,
                 testHost,
                 Keyword("using"),
                 Namespace("System"),
@@ -622,13 +649,15 @@ static void Main()
         public async Task TestNamespaceClassAmbiguities(TestHost testHost)
         {
             await TestAsync(
-@"class C
-{
-}
+                """
+                class C
+                {
+                }
 
-namespace C
-{
-}",
+                namespace C
+                {
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("C"),
@@ -644,13 +673,15 @@ namespace C
         public async Task NameAttributeValue(TestHost testHost)
         {
             await TestAsync(
-@"class Program<T>
-{
-    /// <param name=""x""/>
-    void Goo(int x)
-    {
-    }
-}",
+                """
+                class Program<T>
+                {
+                    /// <param name="x"/>
+                    void Goo(int x)
+                    {
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("Program"),
@@ -664,9 +695,13 @@ void Goo(int x)
                 XmlDoc.Name("param"),
                 XmlDoc.AttributeName("name"),
                 XmlDoc.Delimiter("="),
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 Parameter("x"),
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 XmlDoc.Delimiter("/>"),
                 Keyword("void"),
                 Method("Goo"),
@@ -683,13 +718,15 @@ void Goo(int x)
         public async Task Cref1(TestHost testHost)
         {
             await TestAsync(
-@"/// <see cref=""Program{T}""/>
-class Program<T>
-{
-    void Goo()
-    {
-    }
-}",
+                """
+                /// <see cref="Program{T}"/>
+                class Program<T>
+                {
+                    void Goo()
+                    {
+                    }
+                }
+                """,
                 testHost,
                 XmlDoc.Delimiter("///"),
                 XmlDoc.Text(" "),
@@ -697,12 +734,16 @@ void Goo()
                 XmlDoc.Name("see"),
                 XmlDoc.AttributeName("cref"),
                 XmlDoc.Delimiter("="),
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 Class("Program"),
                 Punctuation.OpenCurly,
                 TypeParameter("T"),
                 Punctuation.CloseCurly,
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 XmlDoc.Delimiter("/>"),
                 Keyword("class"),
                 Class("Program"),
@@ -723,13 +764,15 @@ void Goo()
         public async Task CrefNamespaceIsNotClass(TestHost testHost)
         {
             await TestAsync(
-@"///  <see cref=""N""/>
-namespace N
-{
-    class Program
-    {
-    }
-}",
+                """
+                ///  <see cref="N"/>
+                namespace N
+                {
+                    class Program
+                    {
+                    }
+                }
+                """,
                 testHost,
                 XmlDoc.Delimiter("///"),
                 XmlDoc.Text("  "),
@@ -737,9 +780,13 @@ class Program
                 XmlDoc.Name("see"),
                 XmlDoc.AttributeName("cref"),
                 XmlDoc.Delimiter("="),
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 Namespace("N"),
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 XmlDoc.Delimiter("/>"),
                 Keyword("namespace"),
                 Namespace("N"),
@@ -755,12 +802,14 @@ class Program
         public async Task InterfacePropertyWithSameNameShouldBePreferredToType(TestHost testHost)
         {
             await TestAsync(
-@"interface IGoo
-{
-    int IGoo { get; set; }
+                """
+                interface IGoo
+                {
+                    int IGoo { get; set; }
 
-    void Bar(int x = IGoo);
-}",
+                    void Bar(int x = IGoo);
+                }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("IGoo"),
@@ -790,15 +839,17 @@ await TestAsync(
         public async Task XmlDocCref(TestHost testHost)
         {
             await TestAsync(
-@"/// <summary>
-/// <see cref=""MyClass.MyClass(int)""/>
-/// </summary>
-class MyClass
-{
-    public MyClass(int x)
-    {
-    }
-}",
+                """
+                /// <summary>
+                /// <see cref="MyClass.MyClass(int)"/>
+                /// </summary>
+                class MyClass
+                {
+                    public MyClass(int x)
+                    {
+                    }
+                }
+                """,
                 testHost,
                 XmlDoc.Delimiter("///"),
                 XmlDoc.Text(" "),
@@ -811,14 +862,18 @@ public MyClass(int x)
                 XmlDoc.Name("see"),
                 XmlDoc.AttributeName("cref"),
                 XmlDoc.Delimiter("="),
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 Class("MyClass"),
                 Operators.Dot,
                 Class("MyClass"),
                 Punctuation.OpenParen,
                 Keyword("int"),
                 Punctuation.CloseParen,
-                XmlDoc.AttributeQuotes("\""),
+                XmlDoc.AttributeQuotes("""
+                    "
+                    """),
                 XmlDoc.Delimiter("/>"),
                 XmlDoc.Delimiter("///"),
                 XmlDoc.Text(" "),
@@ -843,12 +898,13 @@ public MyClass(int x)
         public async Task TestGenericTypeWithNoArity(TestHost testHost)
         {
             await TestAsync(
-@"
-using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class Program : IReadOnlyCollection
-{
-}",
+                class Program : IReadOnlyCollection
+                {
+                }
+                """,
                 testHost,
                 Keyword("using"),
                 Namespace("System"),
@@ -869,12 +925,13 @@ class Program : IReadOnlyCollection
         public async Task TestGenericTypeWithWrongArity(TestHost testHost)
         {
             await TestAsync(
-@"
-using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class Program : IReadOnlyCollection<int,string>
-{
-}",
+                class Program : IReadOnlyCollection<int,string>
+                {
+                }
+                """,
                 testHost,
                 Keyword("using"),
                 Namespace("System"),
@@ -900,13 +957,14 @@ class Program : IReadOnlyCollection<int,string>
         public async Task TestExtensionMethodDeclaration(TestHost testHost)
         {
             await TestAsync(
-@"static class ExtMethod
-{
-    public static void TestMethod(this C c)
-    {
-    }
-}
-",
+                """
+                static class ExtMethod
+                {
+                    public static void TestMethod(this C c)
+                    {
+                    }
+                }
+                """,
                 testHost,
                 Keyword("static"),
                 Keyword("class"),
@@ -932,22 +990,23 @@ public static void TestMethod(this C c)
         public async Task TestExtensionMethodUsage(TestHost testHost)
         {
             await TestAsync(
-@"static class ExtMethod
-{
-    public static void TestMethod(this C c)
-    {
-    }
-}
+                """
+                static class ExtMethod
+                {
+                    public static void TestMethod(this C c)
+                    {
+                    }
+                }
 
-class C
-{
-    void Test()
-    {
-        ExtMethod.TestMethod(new C());
-        new C().TestMethod();
-    }
-}
-",
+                class C
+                {
+                    void Test()
+                    {
+                        ExtMethod.TestMethod(new C());
+                        new C().TestMethod();
+                    }
+                }
+                """,
                 testHost,
                 ParseOptions(Options.Regular),
                 Keyword("static"),
@@ -1005,8 +1064,10 @@ void Test()
         public async Task TestConstLocals(TestHost testHost)
         {
             await TestInMethodAsync(
-@"const int Number = 42;
-var x = Number;",
+                """
+                const int Number = 42;
+                var x = Number;
+                """,
                 testHost,
                 Keyword("const"),
                 Keyword("int"),
@@ -1025,9 +1086,10 @@ await TestInMethodAsync(
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_InsideMethod(TestHost testHost)
         {
-            await TestInMethodAsync(@"
-var unmanaged = 0;
-unmanaged++;",
+            await TestInMethodAsync("""
+                var unmanaged = 0;
+                unmanaged++;
+                """,
                 testHost,
                 Keyword("var"),
                 Local("unmanaged"),
@@ -1061,9 +1123,10 @@ await TestAsync(
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_Type_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface unmanaged {}
-class X<T> where T : unmanaged { }",
+            await TestAsync("""
+                interface unmanaged {}
+                class X<T> where T : unmanaged { }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("unmanaged"),
@@ -1085,12 +1148,13 @@ class X<T> where T : unmanaged { }",
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_Type_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface unmanaged {}
-}
-class X<T> where T : unmanaged { }",
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface unmanaged {}
+                }
+                class X<T> where T : unmanaged { }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("OtherScope"),
@@ -1116,11 +1180,12 @@ class X<T> where T : unmanaged { }",
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_Method_Keyword(TestHost testHost)
         {
-            await TestAsync(@"
-class X
-{
-    void M<T>() where T : unmanaged { }
-}",
+            await TestAsync("""
+                class X
+                {
+                    void M<T>() where T : unmanaged { }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("X"),
@@ -1144,12 +1209,13 @@ void M<T>() where T : unmanaged { }
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_Method_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface unmanaged {}
-class X
-{
-    void M<T>() where T : unmanaged { }
-}",
+            await TestAsync("""
+                interface unmanaged {}
+                class X
+                {
+                    void M<T>() where T : unmanaged { }
+                }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("unmanaged"),
@@ -1177,15 +1243,16 @@ void M<T>() where T : unmanaged { }
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_Method_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface unmanaged {}
-}
-class X
-{
-    void M<T>() where T : unmanaged { }
-}",
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface unmanaged {}
+                }
+                class X
+                {
+                    void M<T>() where T : unmanaged { }
+                }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("OtherScope"),
@@ -1238,9 +1305,10 @@ await TestAsync(
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_Delegate_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface unmanaged {}
-delegate void D<T>() where T : unmanaged;",
+            await TestAsync("""
+                interface unmanaged {}
+                delegate void D<T>() where T : unmanaged;
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("unmanaged"),
@@ -1264,14 +1332,15 @@ interface unmanaged {}
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_Delegate_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface unmanaged {}
-}
-delegate void D<T>() where T : unmanaged;",
-                testHost,
-                Keyword("namespace"),
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface unmanaged {}
+                }
+                delegate void D<T>() where T : unmanaged;
+                """,
+                testHost,
+                Keyword("namespace"),
                 Namespace("OtherScope"),
                 Punctuation.OpenCurly,
                 Keyword("interface"),
@@ -1297,14 +1366,15 @@ interface unmanaged {}
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_LocalFunction_Keyword(TestHost testHost)
         {
-            await TestAsync(@"
-class X
-{
-    void N()
-    {
-        void M<T>() where T : unmanaged { }
-    }
-}",
+            await TestAsync("""
+                class X
+                {
+                    void N()
+                    {
+                        void M<T>() where T : unmanaged { }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("X"),
@@ -1334,15 +1404,16 @@ void M<T>() where T : unmanaged { }
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_LocalFunction_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface unmanaged {}
-class X
-{
-    void N()
-    {
-        void M<T>() where T : unmanaged { }
-    }
-}",
+            await TestAsync("""
+                interface unmanaged {}
+                class X
+                {
+                    void N()
+                    {
+                        void M<T>() where T : unmanaged { }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("unmanaged"),
@@ -1376,18 +1447,19 @@ void M<T>() where T : unmanaged { }
         [Theory, CombinatorialData]
         public async Task TestUnmanagedConstraint_LocalFunction_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface unmanaged {}
-}
-class X
-{
-    void N()
-    {
-        void M<T>() where T : unmanaged { }
-    }
-}",
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface unmanaged {}
+                }
+                class X
+                {
+                    void N()
+                    {
+                        void M<T>() where T : unmanaged { }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("OtherScope"),
@@ -1426,22 +1498,23 @@ void M<T>() where T : unmanaged { }
         [CombinatorialData]
         public async Task TestOperatorOverloading(TestHost testHost)
         {
-            await TestAsync(@"
-class C
-{
-    void M()
-    {
-        var a = 1 + 1;
-        var b = new True() + new True();
-    }
-}
-class True
-{
-    public static True operator +(True a, True b)
-    {
-         return new True();
-    }
-}",
+            await TestAsync("""
+                class C
+                {
+                    void M()
+                    {
+                        var a = 1 + 1;
+                        var b = new True() + new True();
+                    }
+                }
+                class True
+                {
+                    public static True operator +(True a, True b)
+                    {
+                         return new True();
+                    }
+                }
+                """,
     testHost,
     Keyword("class"),
     Class("C"),
@@ -1502,9 +1575,10 @@ class True
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_InsideMethod(TestHost testHost)
         {
-            await TestInMethodAsync(@"
-var notnull = 0;
-notnull++;",
+            await TestInMethodAsync("""
+                var notnull = 0;
+                notnull++;
+                """,
                 testHost,
                 Keyword("var"),
                 Local("notnull"),
@@ -1538,9 +1612,10 @@ await TestAsync(
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_Type_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface notnull {}
-class X<T> where T : notnull { }",
+            await TestAsync("""
+                interface notnull {}
+                class X<T> where T : notnull { }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("notnull"),
@@ -1562,12 +1637,13 @@ class X<T> where T : notnull { }",
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_Type_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface notnull {}
-}
-class X<T> where T : notnull { }",
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface notnull {}
+                }
+                class X<T> where T : notnull { }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("OtherScope"),
@@ -1593,11 +1669,12 @@ class X<T> where T : notnull { }",
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_Method_Keyword(TestHost testHost)
         {
-            await TestAsync(@"
-class X
-{
-    void M<T>() where T : notnull { }
-}",
+            await TestAsync("""
+                class X
+                {
+                    void M<T>() where T : notnull { }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("X"),
@@ -1621,12 +1698,13 @@ void M<T>() where T : notnull { }
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_Method_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface notnull {}
-class X
-{
-    void M<T>() where T : notnull { }
-}",
+            await TestAsync("""
+                interface notnull {}
+                class X
+                {
+                    void M<T>() where T : notnull { }
+                }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("notnull"),
@@ -1654,15 +1732,16 @@ void M<T>() where T : notnull { }
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_Method_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface notnull {}
-}
-class X
-{
-    void M<T>() where T : notnull { }
-}",
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface notnull {}
+                }
+                class X
+                {
+                    void M<T>() where T : notnull { }
+                }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("OtherScope"),
@@ -1715,9 +1794,10 @@ await TestAsync(
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_Delegate_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface notnull {}
-delegate void D<T>() where T : notnull;",
+            await TestAsync("""
+                interface notnull {}
+                delegate void D<T>() where T : notnull;
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("notnull"),
@@ -1741,12 +1821,13 @@ interface notnull {}
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_Delegate_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface notnull {}
-}
-delegate void D<T>() where T : notnull;",
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface notnull {}
+                }
+                delegate void D<T>() where T : notnull;
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("OtherScope"),
@@ -1774,14 +1855,15 @@ interface notnull {}
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_LocalFunction_Keyword(TestHost testHost)
         {
-            await TestAsync(@"
-class X
-{
-    void N()
-    {
-        void M<T>() where T : notnull { }
-    }
-}",
+            await TestAsync("""
+                class X
+                {
+                    void N()
+                    {
+                        void M<T>() where T : notnull { }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("X"),
@@ -1811,15 +1893,16 @@ void M<T>() where T : notnull { }
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_LocalFunction_ExistingInterface(TestHost testHost)
         {
-            await TestAsync(@"
-interface notnull {}
-class X
-{
-    void N()
-    {
-        void M<T>() where T : notnull { }
-    }
-}",
+            await TestAsync("""
+                interface notnull {}
+                class X
+                {
+                    void N()
+                    {
+                        void M<T>() where T : notnull { }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("notnull"),
@@ -1853,18 +1936,19 @@ void M<T>() where T : notnull { }
         [Theory, CombinatorialData]
         public async Task TestNotNullConstraint_LocalFunction_ExistingInterfaceButOutOfScope(TestHost testHost)
         {
-            await TestAsync(@"
-namespace OtherScope
-{
-    interface notnull {}
-}
-class X
-{
-    void N()
-    {
-        void M<T>() where T : notnull { }
-    }
-}",
+            await TestAsync("""
+                namespace OtherScope
+                {
+                    interface notnull {}
+                }
+                class X
+                {
+                    void N()
+                    {
+                        void M<T>() where T : notnull { }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("OtherScope"),
@@ -1904,21 +1988,22 @@ void M<T>() where T : notnull { }
         public async Task VarInPropertyPattern(TestHost testHost)
         {
             await TestAsync(
-@"
-using System;
+                """
+                using System;
 
-class Person { public string Name; }
+                class Person { public string Name; }
 
-class Program
-{
-    void Goo(object o)
-    {
-        if (o is Person { Name: var n })
-        {
-            Console.WriteLine(n);
-        }
-    }
-}",
+                class Program
+                {
+                    void Goo(object o)
+                    {
+                        if (o is Person { Name: var n })
+                        {
+                            Console.WriteLine(n);
+                        }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("using"),
                 Namespace("System"),
@@ -1973,16 +2058,17 @@ void Goo(object o)
         public async Task NotPattern(TestHost testHost)
         {
             await TestAsync(
-@"
-class Person
-{
-    void Goo(object o)
-    {
-        if (o is not Person p)
-        {
-        }
-    }
-}",
+                """
+                class Person
+                {
+                    void Goo(object o)
+                    {
+                        if (o is not Person p)
+                        {
+                        }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("Person"),
@@ -2013,16 +2099,17 @@ void Goo(object o)
         public async Task OrPattern(TestHost testHost)
         {
             await TestAsync(
-@"
-class Person
-{
-    void Goo(object o)
-    {
-        if (o is Person or int)
-        {
-        }
-    }
-}",
+                """
+                class Person
+                {
+                    void Goo(object o)
+                    {
+                        if (o is Person or int)
+                        {
+                        }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("Person"),
@@ -2053,11 +2140,11 @@ void Goo(object o)
         public async Task TestPatternVariables(TestHost testHost)
         {
             await TestAsync(
-                @"
-void M(object o) {
-    _ = o is [var (x, y), {} z] list;
-} 
-",
+                """
+                void M(object o) {
+                    _ = o is [var (x, y), {} z] list;
+                }
+                """,
                 testHost,
                 Keyword("void"),
                 Method("M"),
@@ -2092,16 +2179,17 @@ void M(object o) {
         public async Task RelationalPattern(TestHost testHost)
         {
             await TestAsync(
-@"
-class Person
-{
-    void Goo(object o)
-    {
-        if (o is >= 0)
-        {
-        }
-    }
-}",
+                """
+                class Person
+                {
+                    void Goo(object o)
+                    {
+                        if (o is >= 0)
+                        {
+                        }
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("Person"),
@@ -2130,9 +2218,11 @@ void Goo(object o)
         public async Task BasicFileScopedNamespaceClassification(TestHost testHost)
         {
             await TestAsync(
-@"namespace NS;
+                """
+                namespace NS;
 
-class C { }",
+                class C { }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("NS"),
@@ -2151,7 +2241,9 @@ public async Task TestStringEscape(TestHost testHost)
                 Keyword("var"),
                 Local("goo"),
                 Operators.Equals,
-                Verbatim("$@\""),
+                Verbatim("""
+                    $@"
+                    """),
                 Escape("{{"),
                 Punctuation.OpenCurly,
                 Number("12"),
@@ -2159,7 +2251,9 @@ public async Task TestStringEscape(TestHost testHost)
                 String("X"),
                 Punctuation.CloseCurly,
                 Escape("}}"),
-                Verbatim("\""),
+                Verbatim("""
+                    "
+                    """),
                 Punctuation.Semicolon);
         }
 
@@ -2168,11 +2262,12 @@ public async Task TestStringEscape(TestHost testHost)
         public async Task TestStaticConstructorClass(TestHost testHost)
         {
             await TestAsync(
-@"
-class C
-{
-    static C() { }
-}",
+                """
+                class C
+                {
+                    static C() { }
+                }
+                """,
                 testHost,
 Keyword("class"),
 Class("C"),
@@ -2192,11 +2287,12 @@ static C() { }
         public async Task TestStaticConstructorInterface(TestHost testHost)
         {
             await TestAsync(
-@"
-interface C
-{
-    static C() { }
-}",
+                """
+                interface C
+                {
+                    static C() { }
+                }
+                """,
                 testHost,
 Keyword("interface"),
 Interface("C"),
@@ -2216,10 +2312,11 @@ static C() { }
         public async Task TestArgsInTopLevel(TestHost testHost)
         {
             await TestAsync(
-@"
-[|foreach (var arg in args)
-{
-}|]",
+                """
+                [|foreach (var arg in args)
+                {
+                }|]
+                """,
                 testHost,
                 parseOptions: null,
 ControlKeyword("foreach"),
@@ -2238,16 +2335,17 @@ await TestAsync(
         public async Task TestArgsInNormalProgram(TestHost testHost)
         {
             await TestAsync(
-@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        [|foreach (var arg in args)
-        {
-        }|]
-    }
-}",
+                """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        [|foreach (var arg in args)
+                        {
+                        }|]
+                    }
+                }
+                """,
                 testHost,
                 parseOptions: null,
 ControlKeyword("foreach"),
@@ -2266,10 +2364,12 @@ static void Main(string[] args)
         public async Task TestAsyncInIncompleteMember(TestHost testHost)
         {
             await TestAsync(
-@"class Test
-{
-    public async
-}",
+                """
+                class Test
+                {
+                    public async
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("class"),
@@ -2285,14 +2385,16 @@ public async
         public async Task TestAsyncInIncompleteMemberWhenAsyncTypeIsDefined(TestHost testHost)
         {
             await TestAsync(
-@"[|class Test
-{
-    public async
-}|]
+                """
+                [|class Test
+                {
+                    public async
+                }|]
 
-class async
-{
-}",
+                class async
+                {
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("class"),
@@ -2308,10 +2410,12 @@ class async
         public async Task TestAsyncInPotentialLocalFunctionDeclaration(TestHost testHost)
         {
             await TestAsync(
-@"void M()
-{
-    async
-}",
+                """
+                void M()
+                {
+                    async
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("void"),
@@ -2328,14 +2432,16 @@ await TestAsync(
         public async Task TestAsyncInPotentialLocalFunctionDeclarationWhenAsyncTypeIsDefined(TestHost testHost)
         {
             await TestAsync(
-@"[|void M()
-{
-    async
-}|]
+                """
+                [|void M()
+                {
+                    async
+                }|]
 
-class async
-{
-}",
+                class async
+                {
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("void"),
@@ -2352,13 +2458,15 @@ class async
         public async Task TestAsyncAsLocalMemberType_NoAsyncInScope(TestHost testHost)
         {
             await TestAsync(
-@"class Test
-{
-    void M()
-    {
-        [|async a;|]
-    }
-}",
+                """
+                class Test
+                {
+                    void M()
+                    {
+                        [|async a;|]
+                    }
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("async"),
@@ -2371,16 +2479,17 @@ void M()
         public async Task TestAsyncAsLocalMemberType_AsyncInScope(TestHost testHost)
         {
             await TestAsync(
-@"
-class async { }
+                """
+                class async { }
 
-class Test
-{
-    void M()
-    {
-        [|async a;|]
-    }
-}",
+                class Test
+                {
+                    void M()
+                    {
+                        [|async a;|]
+                    }
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Class("async"),
@@ -2393,10 +2502,12 @@ void M()
         public async Task TestAsyncAsPropertyType_NoAsyncInScope(TestHost testHost)
         {
             await TestAsync(
-@"class Test
-{
-    [|public async Prop { get; set; }|]
-}",
+                """
+                class Test
+                {
+                    [|public async Prop { get; set; }|]
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("public"),
@@ -2415,13 +2526,14 @@ await TestAsync(
         public async Task TestAsyncAsPropertyType_AsyncInScope(TestHost testHost)
         {
             await TestAsync(
-@"
-class async { }
+                """
+                class async { }
 
-class Test
-{
-    [|public async Prop { get; set; }|]
-}",
+                class Test
+                {
+                    [|public async Prop { get; set; }|]
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("public"),
@@ -2440,10 +2552,12 @@ class Test
         public async Task TestAsyncAsMethodReturnType_NoAsyncInScope(TestHost testHost)
         {
             await TestAsync(
-@"class Test
-{
-    [|public async M()|] {}
-}",
+                """
+                class Test
+                {
+                    [|public async M()|] {}
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("public"),
@@ -2458,13 +2572,14 @@ await TestAsync(
         public async Task TestAsyncAsMethodReturnType_AsyncInScope(TestHost testHost)
         {
             await TestAsync(
-@"
-class async { }
+                """
+                class async { }
 
-class Test
-{
-    [|public async M()|] {}
-}",
+                class Test
+                {
+                    [|public async M()|] {}
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Keyword("public"),
@@ -2479,18 +2594,20 @@ class Test
         public async Task TestAsyncAsAccessingName(TestHost testHost)
         {
             await TestAsync(
-@"class Test
-{
-    void M()
-    {
-        var a = [|C.async;|]
-    }
-}
+                """
+                class Test
+                {
+                    void M()
+                    {
+                        var a = [|C.async;|]
+                    }
+                }
 
-class C
-{
-    public static int async;
-}",
+                class C
+                {
+                    public static int async;
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Class("C"),
@@ -2505,14 +2622,16 @@ class C
         public async Task TestAsyncInIncompleteDelegateOrLambda(TestHost testHost)
         {
             await TestAsync(
-@"using System;
-class Test
-{
-    void M()
-    {
-        [|Action a = async |]
-    }
-}",
+                """
+                using System;
+                class Test
+                {
+                    void M()
+                    {
+                        [|Action a = async |]
+                    }
+                }
+                """,
                 testHost,
                 parseOptions: null,
 Delegate("Action"),
diff --git a/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests_Dynamic.cs b/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests_Dynamic.cs
index f6d83ba30890a..2db25fc29802e 100644
--- a/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests_Dynamic.cs
+++ b/src/EditorFeatures/CSharpTest/Classification/TotalClassifierTests_Dynamic.cs
@@ -150,12 +150,14 @@ await TestAsync(
         public async Task DynamicAsExternAlias(TestHost testHost)
         {
             await TestAsync(
-@"extern alias dynamic;
-
-class C
-{
-    dynamic::Goo a;
-}",
+                """
+                extern alias dynamic;
+
+                class C
+                {
+                    dynamic::Goo a;
+                }
+                """,
                 testHost,
                 Keyword("extern"),
                 Keyword("alias"),
@@ -202,11 +204,13 @@ await TestAsync(@"delegate dynamic MyDelegate (dynamic d)",
         public async Task DynamicAsDelegateLocalVariable(TestHost testHost)
         {
             await TestInMethodAsync(
-@"Func<string> f = delegate
-{
-    int dynamic = 10;
-    return dynamic.ToString();
-};",
+                """
+                Func<string> f = delegate
+                {
+                    int dynamic = 10;
+                    return dynamic.ToString();
+                };
+                """,
                 testHost,
                 Identifier("Func"),
                 Punctuation.OpenAngle,
@@ -236,14 +240,16 @@ await TestInMethodAsync(
         public async Task DynamicAsGenericTypeName(TestHost testHost)
         {
             await TestAsync(
-@"partial class dynamic<T>
-{
-}
-
-class C
-{
-    dynamic<int> d;
-}",
+                """
+                partial class dynamic<T>
+                {
+                }
+
+                class C
+                {
+                    dynamic<int> d;
+                }
+                """,
                 testHost,
                 Keyword("partial"),
                 Keyword("class"),
@@ -269,10 +275,12 @@ class C
         public async Task DynamicAsGenericField(TestHost testHost)
         {
             await TestAsync(
-@"class A<T>
-{
-    T dynamic;
-}",
+                """
+                class A<T>
+                {
+                    T dynamic;
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("A"),
@@ -372,8 +380,10 @@ await TestInMethodAsync(@"var v = from dynamic in names",
         public async Task DynamicAsAnonymousTypePropertyName(TestHost testHost)
         {
             await TestInMethodAsync(
-@"var v = from dynamic in names
-        select new { dynamic = dynamic };",
+                """
+                var v = from dynamic in names
+                        select new { dynamic = dynamic };
+                """,
                 testHost,
                 Keyword("var"),
                 Local("v"),
@@ -418,11 +428,13 @@ await TestInMethodAsync(
         public async Task DynamicAsAnonymousMethodLocalVariable(TestHost testHost)
         {
             await TestInMethodAsync(
-@"D f = delegate
-{
-    string dynamic = ""a"";
-    return dynamic.Length;
-};",
+                """
+                D f = delegate
+                {
+                    string dynamic = "a";
+                    return dynamic.Length;
+                };
+                """,
                 testHost,
                 Identifier("D"),
                 Local("f"),
@@ -432,7 +444,9 @@ await TestInMethodAsync(
                 Keyword("string"),
                 Local("dynamic"),
                 Operators.Equals,
-                String(@"""a"""),
+                String("""
+                    "a"
+                    """),
                 Punctuation.Semicolon,
                 ControlKeyword("return"),
                 Local("dynamic"),
@@ -447,9 +461,11 @@ await TestInMethodAsync(
         public async Task DynamicAsMethodName(TestHost testHost)
         {
             await TestInClassAsync(
-@"dynamic dynamic()
-{
-}",
+                """
+                dynamic dynamic()
+                {
+                }
+                """,
                 testHost,
                 Keyword("dynamic"),
                 Method("dynamic"),
@@ -463,9 +479,11 @@ await TestInClassAsync(
         public async Task DynamicAsStaticMethodTypeAndParams(TestHost testHost)
         {
             await TestInClassAsync(
-@"static dynamic dynamic(params dynamic[] dynamic)
-{
-}",
+                """
+                static dynamic dynamic(params dynamic[] dynamic)
+                {
+                }
+                """,
                 testHost,
                 Keyword("static"),
                 Keyword("dynamic"),
@@ -486,9 +504,11 @@ await TestInClassAsync(
         public async Task DynamicArraysInMethodSignature(TestHost testHost)
         {
             await TestInClassAsync(
-@"dynamic[] M(dynamic[] p, params dynamic[] pa)
-{
-}",
+                """
+                dynamic[] M(dynamic[] p, params dynamic[] pa)
+                {
+                }
+                """,
                 testHost,
                 Keyword("dynamic"),
                 Punctuation.OpenBracket,
@@ -514,11 +534,13 @@ await TestInClassAsync(
         public async Task DynamicInPartialMethods(TestHost testHost)
         {
             await TestInClassAsync(
-@"partial void F(dynamic d);
+                """
+                partial void F(dynamic d);
 
-partial void F(dynamic d)
-{
-}",
+                partial void F(dynamic d)
+                {
+                }
+                """,
                 testHost,
                 Keyword("partial"),
                 Keyword("void"),
@@ -543,9 +565,11 @@ partial void F(dynamic d)
         public async Task DynamicRefAndOutParameters(TestHost testHost)
         {
             await TestInClassAsync(
-@"void F(ref dynamic r, out dynamic o)
-{
-}",
+                """
+                void F(ref dynamic r, out dynamic o)
+                {
+                }
+                """,
                 testHost,
                 Keyword("void"),
                 Method("F"),
@@ -566,9 +590,11 @@ await TestInClassAsync(
         public async Task DynamicInExtensionMethod(TestHost testHost)
         {
             await TestInClassAsync(
-@"dynamic F(this dynamic self, dynamic p)
-{
-}",
+                """
+                dynamic F(this dynamic self, dynamic p)
+                {
+                }
+                """,
                 testHost,
                 Keyword("dynamic"),
                 ExtensionMethod("F"),
@@ -588,9 +614,11 @@ await TestInClassAsync(
         public async Task DynamicAsBaseClass(TestHost testHost)
         {
             await TestAsync(
-@"class C : dynamic
-{
-}",
+                """
+                class C : dynamic
+                {
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("C"),
@@ -604,9 +632,11 @@ await TestAsync(
         public async Task DynamicAsGenericConstraint(TestHost testHost)
         {
             await TestAsync(
-@"class C<T> where T : dynamic
-{
-}",
+                """
+                class C<T> where T : dynamic
+                {
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("C"),
@@ -625,10 +655,12 @@ await TestAsync(
         public async Task DynamicSizeOf(TestHost testHost)
         {
             await TestInClassAsync(
-@"unsafe int M()
-{
-    return sizeof(dynamic);
-}",
+                """
+                unsafe int M()
+                {
+                    return sizeof(dynamic);
+                }
+                """,
                 testHost,
                 Keyword("unsafe"),
                 Keyword("int"),
@@ -661,9 +693,11 @@ await TestInMethodAsync(@"typeof(dynamic)",
         public async Task DynamicAsArrayName(bool script, TestHost testHost)
         {
             var code =
-@"int[] dynamic = {
-    1
-};";
+                """
+                int[] dynamic = {
+                    1
+                };
+                """;
 
             var parseOptions = script ? Options.Script : null;
 
@@ -722,9 +756,11 @@ await TestInMethodAsync(
         public async Task DynamicAsNamespaceName(TestHost testHost)
         {
             await TestAsync(
-@"namespace dynamic
-{
-}",
+                """
+                namespace dynamic
+                {
+                }
+                """,
                 testHost,
                 Keyword("namespace"),
                 Namespace("dynamic"),
@@ -736,9 +772,11 @@ await TestAsync(
         public async Task DynamicAsClassName(TestHost testHost)
         {
             await TestAsync(
-@"class dynamic
-{
-}",
+                """
+                class dynamic
+                {
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("dynamic"),
@@ -750,12 +788,14 @@ await TestAsync(
         public async Task DynamicAsConstructorDeclarationName(TestHost testHost)
         {
             await TestAsync(
-@"class dynamic
-{
-    dynamic()
-    {
-    }
-}",
+                """
+                class dynamic
+                {
+                    dynamic()
+                    {
+                    }
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("dynamic"),
@@ -785,8 +825,10 @@ await TestInMethodAsync(
         public async Task DynamicAsGotoLabel(TestHost testHost)
         {
             await TestInMethodAsync(
-@"dynamic: int i = 0;
-        goto dynamic;",
+                """
+                dynamic: int i = 0;
+                        goto dynamic;
+                """,
                 testHost,
                 Label("dynamic"),
                 Punctuation.Colon,
@@ -819,10 +861,12 @@ await TestInMethodAsync(
         public async Task DynamicAsEnumFieldDefinition(TestHost testHost)
         {
             await TestAsync(
-@"enum A
-{
-    dynamic
-}",
+                """
+                enum A
+                {
+                    dynamic
+                }
+                """,
                 testHost,
                 Keyword("enum"),
                 Enum("A"),
@@ -835,9 +879,11 @@ await TestAsync(
         public async Task DynamicAsEnumType(TestHost testHost)
         {
             await TestAsync(
-@"enum dynamic
-{
-}",
+                """
+                enum dynamic
+                {
+                }
+                """,
                 testHost,
                 Keyword("enum"),
                 Enum("dynamic"),
@@ -849,10 +895,12 @@ await TestAsync(
         public async Task DynamicAsGenericTypeParameter(TestHost testHost)
         {
             await TestAsync(
-@"class C<dynamic, T> where dynamic : T
-{
-    dynamic d;
-}",
+                """
+                class C<dynamic, T> where dynamic : T
+                {
+                    dynamic d;
+                }
+                """,
                 testHost,
                 Keyword("class"),
                 Class("C"),
@@ -1037,8 +1085,10 @@ await TestInMethodAsync(
         public async Task DynamicAsRegionLabel(TestHost testHost)
         {
             var code =
-@"#region dynamic
-#endregion";
+                """
+                #region dynamic
+                #endregion
+                """;
             await TestAsync(code,
                 testHost,
                 PPKeyword("#"),
@@ -1052,9 +1102,11 @@ await TestAsync(code,
         public async Task DynamicAsInterfaceType(TestHost testHost)
         {
             await TestAsync(
-@"interface dynamic
-{
-}",
+                """
+                interface dynamic
+                {
+                }
+                """,
                 testHost,
                 Keyword("interface"),
                 Interface("dynamic"),
@@ -1066,9 +1118,11 @@ await TestAsync(
         public async Task DynamicAsStructType(TestHost testHost)
         {
             await TestAsync(
-@"struct dynamic
-{
-}",
+                """
+                struct dynamic
+                {
+                }
+                """,
                 testHost,
                 Keyword("struct"),
                 Struct("dynamic"),
diff --git a/src/EditorFeatures/CSharpTest/CodeLens/CSharpCodeLensTests.cs b/src/EditorFeatures/CSharpTest/CodeLens/CSharpCodeLensTests.cs
index 09de42bba2244..a4aebcb13dbcb 100644
--- a/src/EditorFeatures/CSharpTest/CodeLens/CSharpCodeLensTests.cs
+++ b/src/EditorFeatures/CSharpTest/CodeLens/CSharpCodeLensTests.cs
@@ -18,60 +18,64 @@ public sealed class CSharpCodeLensTests : AbstractCodeLensTest
         [Fact]
         public async Task TestCount()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-public class A
-{
-    {|0: public void B()
-    {
-        C();
-    }|}
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                public class A
+                {
+                    {|0: public void B()
+                    {
+                        C();
+                    }|}
 
-    {|2: public void C()
-    {
-        D();
-    }|}
+                    {|2: public void C()
+                    {
+                        D();
+                    }|}
 
-    {|1: public void D()
-    {
-        C();
-    }|}
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+                    {|1: public void D()
+                    {
+                        C();
+                    }|}
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await RunCountTest(input);
         }
 
         [Fact]
         public async Task TestCapping()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-public class A
-{
-    {|0: public void B()
-    {
-        C();
-    }|}
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                public class A
+                {
+                    {|0: public void B()
+                    {
+                        C();
+                    }|}
 
-    {|capped1: public void C()
-    {
-        D();
-    }|}
+                    {|capped1: public void C()
+                    {
+                        D();
+                    }|}
 
-    {|1: public void D()
-    {
-        C();
-    }|}
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+                    {|1: public void D()
+                    {
+                        C();
+                    }|}
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             await RunCountTest(input, 1);
         }
@@ -79,45 +83,47 @@ public class A
         [Fact]
         public async Task TestLinkedFiles()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-public class A
-{
-    {|0: public void B()
-    {
-        C();
-    }|}
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                public class A
+                {
+                    {|0: public void B()
+                    {
+                        C();
+                    }|}
 
-    {|3: public void C()
-    {
-        D();
-    }|}
+                    {|3: public void C()
+                    {
+                        D();
+                    }|}
 
-    {|3: public void D()
-    {
-        C();
-    }|}
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""CurrentDocument.cs""/>
-        <Document FilePath=""AdditionalDocument.cs""><![CDATA[
-class E
-{
-    void F()
-    {
-        A.C();
-        A.D();
-        A.D();
-    }
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+                    {|3: public void D()
+                    {
+                        C();
+                    }|}
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="CurrentDocument.cs"/>
+                        <Document FilePath="AdditionalDocument.cs"><![CDATA[
+                class E
+                {
+                    void F()
+                    {
+                        A.C();
+                        A.D();
+                        A.D();
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             await RunReferenceTest(input);
         }
@@ -125,30 +131,32 @@ void F()
         [Fact]
         public async Task TestDisplay()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-public class A
-{
-    {|0: public void B()
-    {
-        C();
-    }|}
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                public class A
+                {
+                    {|0: public void B()
+                    {
+                        C();
+                    }|}
 
-    {|2: public void C()
-    {
-        D();
-    }|}
+                    {|2: public void C()
+                    {
+                        D();
+                    }|}
 
-    {|1: public void D()
-    {
-        C();
-    }|}
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+                    {|1: public void D()
+                    {
+                        C();
+                    }|}
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             await RunReferenceTest(input);
         }
@@ -156,63 +164,67 @@ public class A
         [Fact]
         public async Task TestMethodReferences()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-public class A
-{
-    {|0: public void B()
-    {
-        C();
-    }|}
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                public class A
+                {
+                    {|0: public void B()
+                    {
+                        C();
+                    }|}
 
-    {|2: public void C()
-    {
-        D();
-    }|}
+                    {|2: public void C()
+                    {
+                        D();
+                    }|}
 
-    {|1: public void D()
-    {
-        C();
-    }|}
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+                    {|1: public void D()
+                    {
+                        C();
+                    }|}
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await RunMethodReferenceTest(input);
         }
 
         [Fact]
         public async Task TestMethodReferencesWithDocstrings()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-public class A
-{
-    /// <summary>
-    ///     <see cref=""A.C""/>
-    /// </summary>
-    {|0: public void B()
-    {
-        C();
-    }|}
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                public class A
+                {
+                    /// <summary>
+                    ///     <see cref="A.C"/>
+                    /// </summary>
+                    {|0: public void B()
+                    {
+                        C();
+                    }|}
 
-    {|2: public void C()
-    {
-        D();
-    }|}
+                    {|2: public void C()
+                    {
+                        D();
+                    }|}
 
-    {|1: public void D()
-    {
-        C();
-    }|}
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+                    {|1: public void D()
+                    {
+                        C();
+                    }|}
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await RunMethodReferenceTest(input);
         }
 
@@ -258,126 +270,136 @@ public async Task TestFullyQualifiedName(string typeKind)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/49636")]
         public async Task TestExplicitParameterlessConstructor()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-{|2:public class Foo|}
-{
-    public Foo() { }
-}
-public class B
-{
-    private void Test()
-    {
-        var foo = new Foo();
-    }
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                {|2:public class Foo|}
+                {
+                    public Foo() { }
+                }
+                public class B
+                {
+                    private void Test()
+                    {
+                        var foo = new Foo();
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await RunReferenceTest(input);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/49636")]
         public async Task TestExplicitParameterlessConstructor_TwoCalls()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-{|3:public class Foo|}
-{
-    public Foo() { }
-}
-public class B
-{
-    private void Test()
-    {
-        var foo1 = new Foo();
-        var foo2 = new Foo();
-    }
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                {|3:public class Foo|}
+                {
+                    public Foo() { }
+                }
+                public class B
+                {
+                    private void Test()
+                    {
+                        var foo1 = new Foo();
+                        var foo2 = new Foo();
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await RunReferenceTest(input);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/49636")]
         public async Task TestImplicitParameterlessConstructor()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-{|1:public class Foo|}
-{
-}
-public class B
-{
-    private void Test()
-    {
-        var foo = new Foo();
-    }
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                {|1:public class Foo|}
+                {
+                }
+                public class B
+                {
+                    private void Test()
+                    {
+                        var foo = new Foo();
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await RunReferenceTest(input);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/49636")]
         public async Task TestImplicitParameterlessConstructor_TwoCalls()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-{|2:public class Foo|}
-{
-}
-public class B
-{
-    private void Test()
-    {
-        var foo1 = new Foo();
-        var foo2 = new Foo();
-    }
-}
-]]>
-        </Document>
-    </Project>
-</Workspace>";
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                {|2:public class Foo|}
+                {
+                }
+                public class B
+                {
+                    private void Test()
+                    {
+                        var foo1 = new Foo();
+                        var foo2 = new Foo();
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await RunReferenceTest(input);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/51633")]
         public async Task TestMethodRefSourceGeneratedDocument()
         {
-            const string input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""Program.cs""><![CDATA[
-namespace ConsoleSample
-{
-    class Program
-    {
-        {|1:public Program()
-        {
-        }|}
-    }
-}]]>
-        </Document>
-        <DocumentFromSourceGenerator><![CDATA[
-namespace ConsoleSample
-{
-    internal partial class Program
-    {
-        public static CreateProgram() => new Program();
-    }
-}]]>
-        </DocumentFromSourceGenerator>
-    </Project>
-</Workspace>";
+            const string input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="Program.cs"><![CDATA[
+                namespace ConsoleSample
+                {
+                    class Program
+                    {
+                        {|1:public Program()
+                        {
+                        }|}
+                    }
+                }]]>
+                        </Document>
+                        <DocumentFromSourceGenerator><![CDATA[
+                namespace ConsoleSample
+                {
+                    internal partial class Program
+                    {
+                        public static CreateProgram() => new Program();
+                    }
+                }]]>
+                        </DocumentFromSourceGenerator>
+                    </Project>
+                </Workspace>
+                """;
             await RunMethodReferenceTest(input);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/CommentSelection/CSharpCommentSelectionTests.cs b/src/EditorFeatures/CSharpTest/CommentSelection/CSharpCommentSelectionTests.cs
index e601ea1669ecd..41c6193f605d8 100644
--- a/src/EditorFeatures/CSharpTest/CommentSelection/CSharpCommentSelectionTests.cs
+++ b/src/EditorFeatures/CSharpTest/CommentSelection/CSharpCommentSelectionTests.cs
@@ -27,67 +27,77 @@ public class CSharpCommentSelectionTests
         [WpfFact]
         public void UncommentAndFormat1()
         {
-            var code = @"class A
-{
-    [|          //            void  Method  (   )
-                // {
-                //
-                //                      }|]
-}";
-            var expected = @"class A
-{
-    void Method()
-    {
-
-    }
-}";
+            var code = """
+                class A
+                {
+                    [|          //            void  Method  (   )
+                                // {
+                                //
+                                //                      }|]
+                }
+                """;
+            var expected = """
+                class A
+                {
+                    void Method()
+                    {
+
+                    }
+                }
+                """;
             UncommentSelection(code, expected);
         }
 
         [WpfFact]
         public void UncommentAndFormat2()
         {
-            var code = @"class A
-{
-    [|          /*            void  Method  (   )
-                 {
-                
-                                      } */|]
-}";
-            var expected = @"class A
-{
-    void Method()
-    {
-
-    }
-}";
+            var code = """
+                class A
+                {
+                    [|          /*            void  Method  (   )
+                                 {
+
+                                                      } */|]
+                }
+                """;
+            var expected = """
+                class A
+                {
+                    void Method()
+                    {
+
+                    }
+                }
+                """;
             UncommentSelection(code, expected);
         }
 
         [WpfFact]
         public void UncommentSingleLineCommentInPseudoBlockComment()
         {
-            var code = @"
-class C
-{
-    /// <include file='doc\Control.uex' path='docs/doc[@for=""Control.RtlTranslateAlignment1""]/*' />
-    protected void RtlTranslateAlignment2()
-    {
-        //[|int x = 0;|]
-    }
-    /* Hello world */
-}";
-
-            var expected = @"
-class C
-{
-    /// <include file='doc\Control.uex' path='docs/doc[@for=""Control.RtlTranslateAlignment1""]/*' />
-    protected void RtlTranslateAlignment2()
-    {
-        int x = 0;
-    }
-    /* Hello world */
-}";
+            var code = """
+                class C
+                {
+                    /// <include file='doc\Control.uex' path='docs/doc[@for="Control.RtlTranslateAlignment1"]/*' />
+                    protected void RtlTranslateAlignment2()
+                    {
+                        //[|int x = 0;|]
+                    }
+                    /* Hello world */
+                }
+                """;
+
+            var expected = """
+                class C
+                {
+                    /// <include file='doc\Control.uex' path='docs/doc[@for="Control.RtlTranslateAlignment1"]/*' />
+                    protected void RtlTranslateAlignment2()
+                    {
+                        int x = 0;
+                    }
+                    /* Hello world */
+                }
+                """;
 
             UncommentSelection(code, expected);
         }
@@ -95,20 +105,24 @@ protected void RtlTranslateAlignment2()
         [WpfFact]
         public void UncommentAndFormat3()
         {
-            var code = @"class A
-{
-    [|          //            void  Method  (   )       |]
-    [|            // {                                  |]
-    [|            //                                    |]
-    [|            //                      }             |]
-}";
-            var expected = @"class A
-{
-    void Method()
-    {
-
-    }
-}";
+            var code = """
+                class A
+                {
+                    [|          //            void  Method  (   )       |]
+                    [|            // {                                  |]
+                    [|            //                                    |]
+                    [|            //                      }             |]
+                }
+                """;
+            var expected = """
+                class A
+                {
+                    void Method()
+                    {
+
+                    }
+                }
+                """;
             UncommentSelection(code, expected);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleBlockCommentCommandHandlerTests.cs b/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleBlockCommentCommandHandlerTests.cs
index e45b31f51a9f8..43cbdff7f755a 100644
--- a/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleBlockCommentCommandHandlerTests.cs
+++ b/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleBlockCommentCommandHandlerTests.cs
@@ -26,27 +26,29 @@ public class CSharpToggleBlockCommentCommandHandlerTests : AbstractToggleComment
         public void AddComment_CommentMarkerStringBeforeSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        string s = '/*';
-        [|var j = 2;
-        var k = 3;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        string s = '/*';
+                        [|var j = 2;
+                        var k = 3;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        string s = '/*';
-        [|/*var j = 2;
-        var k = 3;*/|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        string s = '/*';
+                        [|/*var j = 2;
+                        var k = 3;*/|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -55,31 +57,33 @@ void M()
         public void AddComment_DirectiveWithCommentInsideSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;
-#if false
-        /*var j = 2;*/
-#endif
-        var k = 3;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;
+                #if false
+                        /*var j = 2;*/
+                #endif
+                        var k = 3;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|/*var i = 1;
-#if false
-        /*var j = 2;*/
-#endif
-        var k = 3;*/|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|/*var i = 1;
+                #if false
+                        /*var j = 2;*/
+                #endif
+                        var k = 3;*/|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -88,27 +92,29 @@ void M()
         public void AddComment_MarkerInsideSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;
-        string s = '/*';
-        var k = 3;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;
+                        string s = '/*';
+                        var k = 3;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|/*var i = 1;
-        string s = '/*';
-        var k = 3;*/|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|/*var i = 1;
+                        string s = '/*';
+                        var k = 3;*/|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -117,27 +123,29 @@ void M()
         public void AddComment_CloseCommentMarkerStringInSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;
-        string s = '*/';
-        var k = 3;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;
+                        string s = '*/';
+                        var k = 3;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|/*var i = 1;
-        string s = '*/';
-        var k = 3;*/|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|/*var i = 1;
+                        string s = '*/';
+                        var k = 3;*/|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -146,27 +154,29 @@ void M()
         public void AddComment_CommentMarkerStringAfterSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;
-        var j = 2;|]
-        string s = '*/';
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;
+                        var j = 2;|]
+                        string s = '*/';
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|/*var i = 1;
-        var j = 2;*/|]
-        string s = '*/';
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|/*var i = 1;
+                        var j = 2;*/|]
+                        string s = '*/';
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -175,29 +185,31 @@ void M()
         public void RemoveComment_CommentMarkerStringNearSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        string s = '/*';
-        [|/*var i = 1;
-        var j = 2;
-        var k = 3;*/|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        string s = '/*';
+                        [|/*var i = 1;
+                        var j = 2;
+                        var k = 3;*/|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        string s = '/*';
-        [|var i = 1;
-        var j = 2;
-        var k = 3;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        string s = '/*';
+                        [|var i = 1;
+                        var j = 2;
+                        var k = 3;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -206,23 +218,25 @@ void M()
         public void RemoveComment_CommentMarkerStringInSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|/*string s = '/*';*/|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|/*string s = '/*';*/|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|string s = '/*';|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|string s = '/*';|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
diff --git a/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleLineCommentCommandHandlerTests.cs b/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleLineCommentCommandHandlerTests.cs
index 6135d1e1415d1..1e464f72aab28 100644
--- a/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleLineCommentCommandHandlerTests.cs
+++ b/src/EditorFeatures/CSharpTest/CommentSelection/CSharpToggleLineCommentCommandHandlerTests.cs
@@ -43,23 +43,25 @@ public void AddComment_EmptySelection()
         public void AddComment_CaretInUncommentedLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        var$$ i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var$$ i = 1;
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var[||] i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var[||] i = 1;
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -68,23 +70,25 @@ void M()
         public void AddComment_CaretBeforeUncommentedLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-$$        var i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                $$        var i = 1;
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-[||]        //var i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [||]        //var i = 1;
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -93,23 +97,25 @@ void M()
         public void AddComment_SingleLineSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -118,23 +124,25 @@ void M()
         public void AddComment_PartialSingleLineSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        var [|i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var [|i = 1;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var [|i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var [|i = 1;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -143,27 +151,29 @@ void M()
         public void AddComment_SingleLineWithWhitespaceSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-[|
-        var i = 1;
-   |]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        var i = 1;
+                   |]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-[|
-        //var i = 1;
-   |]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        //var i = 1;
+                   |]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -172,23 +182,25 @@ void M()
         public void AddComment_SelectionInsideCommentAtEndOfLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        var i = 1; // A [|comment|].
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var i = 1; // A [|comment|].
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var i = 1; // A [|comment|].
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var i = 1; // A [|comment|].
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -197,23 +209,25 @@ void M()
         public void AddComment_SelectionAroundCommentAtEndOfLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        var i = 1; [|// A comment.|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var i = 1; [|// A comment.|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var i = 1; [|// A comment.|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var i = 1; [|// A comment.|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -222,23 +236,25 @@ void M()
         public void AddComment_SelectionOutsideCommentAtEndOfLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1; // A comment.|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1; // A comment.|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1; // A comment.|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1; // A comment.|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -247,23 +263,25 @@ void M()
         public void AddComment_CaretOutsideCommentAtEndOfLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        var $$i = 1; // A comment.
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var $$i = 1; // A comment.
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var [||]i = 1; // A comment.
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var [||]i = 1; // A comment.
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -272,23 +290,25 @@ void M()
         public void AddComment_CaretInsideCommentAtEndOfLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        var i = 1; // A $$comment.
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var i = 1; // A $$comment.
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var i = 1; // A [||]comment.
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var i = 1; // A [||]comment.
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -297,23 +317,25 @@ void M()
         public void AddComment_CommentMarkerInString()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|string s = '\\';|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|string s = '\\';|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|//string s = '\\';|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//string s = '\\';|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -322,25 +344,27 @@ void M()
         public void AddComment_MultipleLinesSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;
-        var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;
+                        var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;
-        //var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;
+                        //var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -349,31 +373,33 @@ void M()
         public void AddComment_MultipleLinesWithWhitespaceSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-[|
-        var i = 1;
-
-        var j = 2;
-   |]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        var i = 1;
+
+                        var j = 2;
+                   |]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-[|
-        //var i = 1;
-
-        //var j = 2;
-   |]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        //var i = 1;
+
+                        //var j = 2;
+                   |]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -382,25 +408,27 @@ void M()
         public void AddComment_MultipleLinesPartiallyCommentedSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;
-        var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;
+                        var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|////var i = 1;
-        //var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|////var i = 1;
+                        //var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -409,25 +437,27 @@ void M()
         public void AddComment_MultipleLinesWithCommentsInLineSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1; // A comment.
-        var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1; // A comment.
+                        var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1; // A comment.
-        //var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1; // A comment.
+                        //var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -436,27 +466,29 @@ void M()
         public void AddComment_MultipleLinesWithDifferentIndentationsSelected()
         {
             var markup =
-@"
-class C
-{
-[|    void M()
-    {
-        var i = 1;
-
-        var j = 2;
-    }|]
-}";
+                """
+                class C
+                {
+                [|    void M()
+                    {
+                        var i = 1;
+
+                        var j = 2;
+                    }|]
+                }
+                """;
             var expected =
-@"
-class C
-{
-[|    //void M()
-    //{
-    //    var i = 1;
-
-    //    var j = 2;
-    //}|]
-}";
+                """
+                class C
+                {
+                [|    //void M()
+                    //{
+                    //    var i = 1;
+
+                    //    var j = 2;
+                    //}|]
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -465,25 +497,27 @@ class C
         public void AddComment_MultiCaret()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        var [||]i = 1;
-        var [||]j = 2;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var [||]i = 1;
+                        var [||]j = 2;
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var [||]i = 1;
-        //var [||]j = 2;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var [||]i = 1;
+                        //var [||]j = 2;
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -492,25 +526,27 @@ void M()
         public void AddComment_MultiSeletion()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;|]
-        [|var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;|]
+                        [|var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;|]
-        [|//var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;|]
+                        [|//var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -519,25 +555,27 @@ void M()
         public void AddComment_MultiSeletionPartiallyCommented()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = |]1;
-        [|var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = |]1;
+                        [|var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|////var i = |]1;
-        [|//var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|////var i = |]1;
+                        [|//var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -547,22 +585,25 @@ public void AddComment_WithProjectionBuffer()
         {
             var surfaceMarkup = @"&lt; html &gt;@{|S1:|}";
             var csharpMarkup =
-@"
-{|S1:class C
-{
-    void M()
-    {
-        [|var i = 1;|]
-    }
-}|}";
+                """
+                {|S1:class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;|]
+                    }
+                }|}
+                """;
             var expected =
-@"&lt; html &gt;@class C
-{
-    void M()
-    {
-        [|//var i = 1;|]
-    }
-}";
+                """
+                &lt; html &gt;@class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;|]
+                    }
+                }
+                """;
 
             ToggleCommentWithProjectionBuffer(surfaceMarkup, csharpMarkup, expected);
         }
@@ -571,23 +612,25 @@ void M()
         public void RemoveComment_CaretInCommentedLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        //var$$ i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var$$ i = 1;
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        var[||] i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var[||] i = 1;
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -596,23 +639,25 @@ void M()
         public void RemoveComment_CaretBeforeCommentedLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-    $$    //var i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                    $$    //var i = 1;
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-    [||]    var i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                    [||]    var i = 1;
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -621,23 +666,25 @@ void M()
         public void RemoveComment_CaretInCommentedLineWithEndComment()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        //var i = 1; // A $$comment.
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var i = 1; // A $$comment.
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        var i = 1; // A [||]comment.
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var i = 1; // A [||]comment.
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -646,23 +693,25 @@ void M()
         public void RemoveComment_CaretInDoubleCommentedLine()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        ////var$$ i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        ////var$$ i = 1;
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        //var[||] i = 1;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var[||] i = 1;
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -671,23 +720,25 @@ void M()
         public void RemoveComment_CommentedLineSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -696,23 +747,25 @@ void M()
         public void RemoveComment_InsideCommentSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        //var [|i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var [|i = 1;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        var [|i = 1;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var [|i = 1;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -721,27 +774,29 @@ void M()
         public void RemoveComment_CommentedLineWithWhitespaceSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-[|
-        //var i = 1;
-  |]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        //var i = 1;
+                  |]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-[|
-        var i = 1;
-|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        var i = 1;
+                |]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -750,23 +805,25 @@ void M()
         public void RemoveComment_CommentMarkerInString()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//string s = '\\';|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//string s = '\\';|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|string s = '\\';|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|string s = '\\';|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -775,25 +832,27 @@ void M()
         public void RemoveComment_MultipleCommentedLinesSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;
-        //var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;
+                        //var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;
-        var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;
+                        var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -802,31 +861,33 @@ void M()
         public void RemoveComment_MultipleCommentedLinesAndWhitespaceSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-[|
-        //var i = 1;
-
-        //var j = 2;
-    |]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        //var i = 1;
+
+                        //var j = 2;
+                    |]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-[|
-        var i = 1;
-
-        var j = 2;
-|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                [|
+                        var i = 1;
+
+                        var j = 2;
+                |]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -835,25 +896,27 @@ void M()
         public void RemoveComment_MultipleCommentedLinesWithEndCommentSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1; // A comment.
-        //var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1; // A comment.
+                        //var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1; // A comment.
-        var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1; // A comment.
+                        var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -862,27 +925,29 @@ void M()
         public void RemoveComment_MultipleLinesWithDifferentIndentationsSelected()
         {
             var markup =
-@"
-class C
-{
-[|    //void M()
-    //{
-    //    var i = 1;
-
-    //    var j = 2;
-    //}|]
-}";
+                """
+                class C
+                {
+                [|    //void M()
+                    //{
+                    //    var i = 1;
+
+                    //    var j = 2;
+                    //}|]
+                }
+                """;
             var expected =
-@"
-class C
-{
-[|    void M()
-    {
-        var i = 1;
-
-        var j = 2;
-    }|]
-}";
+                """
+                class C
+                {
+                [|    void M()
+                    {
+                        var i = 1;
+
+                        var j = 2;
+                    }|]
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -891,27 +956,29 @@ class C
         public void RemoveComment_MultiCaret()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        //var [||]i = 1;
-              [||]
-        //var [||]j = 2;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        //var [||]i = 1;
+                              [||]
+                        //var [||]j = 2;
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        var [||]i = 1;
-[||]
-        var [||]j = 2;
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        var [||]i = 1;
+                [||]
+                        var [||]j = 2;
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -920,27 +987,29 @@ void M()
         public void RemoveComment_MultiSeletion()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;|]
-        [|            |]
-        [|//var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;|]
+                        [|            |]
+                        [|//var j = 2;|]
+                    }
+                }
+                """;
             var expected =
-@"
-class C
-{
-    void M()
-    {
-        [|var i = 1;|]
-[||]
-        [|var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;|]
+                [||]
+                        [|var j = 2;|]
+                    }
+                }
+                """;
 
             ToggleComment(markup, expected);
         }
@@ -950,22 +1019,25 @@ public void RemoveComment_WithProjectionBuffer()
         {
             var surfaceMarkup = @"&lt; html &gt;@{|S1:|}";
             var csharpMarkup =
-@"
-{|S1:class C
-{
-    void M()
-    {
-        [|//var i = 1;|]
-    }
-}|}";
+                """
+                {|S1:class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;|]
+                    }
+                }|}
+                """;
             var expected =
-@"&lt; html &gt;@class C
-{
-    void M()
-    {
-        [|var i = 1;|]
-    }
-}";
+                """
+                &lt; html &gt;@class C
+                {
+                    void M()
+                    {
+                        [|var i = 1;|]
+                    }
+                }
+                """;
 
             ToggleCommentWithProjectionBuffer(surfaceMarkup, csharpMarkup, expected);
         }
@@ -974,38 +1046,41 @@ void M()
         public void ToggleComment_MultipleLinesSelected()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;
-
-        var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;
+
+                        var j = 2;|]
+                    }
+                }
+                """;
             var expected = new string[]
             {
-@"
-class C
-{
-    void M()
-    {
-        [|////var i = 1;
-
-        //var j = 2;|]
-    }
-}",
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = 1;
-
-        var j = 2;|]
-    }
-}"
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|////var i = 1;
+
+                        //var j = 2;|]
+                    }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = 1;
+
+                        var j = 2;|]
+                    }
+                }
+                """
         };
 
             ToggleCommentMultiple(markup, expected);
@@ -1015,38 +1090,41 @@ void M()
         public void ToggleComment_MultipleSelection()
         {
             var markup =
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = |]1;
-[||]
-        [|var j = 2;|]
-    }
-}";
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = |]1;
+                [||]
+                        [|var j = 2;|]
+                    }
+                }
+                """;
             var expected = new string[]
             {
-@"
-class C
-{
-    void M()
-    {
-        [|////var i = |]1;
-[||]
-        [|//var j = 2;|]
-    }
-}",
-@"
-class C
-{
-    void M()
-    {
-        [|//var i = |]1;
-[||]
-        [|var j = 2;|]
-    }
-}"
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|////var i = |]1;
+                [||]
+                        [|//var j = 2;|]
+                    }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|//var i = |]1;
+                [||]
+                        [|var j = 2;|]
+                    }
+                }
+                """
         };
 
             ToggleCommentMultiple(markup, expected);
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AbstractCSharpCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AbstractCSharpCompletionProviderTests.cs
index 6e59bef8ac1f1..7f5753da6ae96 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AbstractCSharpCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AbstractCSharpCompletionProviderTests.cs
@@ -139,23 +139,25 @@ await VerifyInFrontOfCommentAsync(
         protected static string AddInsideMethod(string text)
         {
             return
-@"class C
-{
-  void F()
-  {
-    " + text +
-@"  }
-}";
+                """
+                class C
+                {
+                  void F()
+                  {
+                """ + text +
+                """
+                  }
+                }
+                """;
         }
 
         protected static string AddUsingDirectives(string usingDirectives, string text)
         {
             return
 usingDirectives +
-@"
-
+"""
 
-" +
+""" +
 text;
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AttributeNamedParameterCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AttributeNamedParameterCompletionProviderTests.cs
index a01333ebd1ccc..f011c53704c83 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AttributeNamedParameterCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AttributeNamedParameterCompletionProviderTests.cs
@@ -24,20 +24,21 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task SendEnterThroughToEditorTest()
         {
-            const string markup = @"
-using System;
-class class1
-{
-    [Test($$
-    public void Goo()
-    {
-    }
-}
- 
-public class TestAttribute : Attribute
-{
-    public ConsoleColor Color { get; set; }
-}";
+            const string markup = """
+                using System;
+                class class1
+                {
+                    [Test($$
+                    public void Goo()
+                    {
+                    }
+                }
+
+                public class TestAttribute : Attribute
+                {
+                    public ConsoleColor Color { get; set; }
+                }
+                """;
 
             await VerifySendEnterThroughToEnterAsync(markup, "Color =", sendThroughEnterOption: EnterKeyRule.Never, expected: false);
             await VerifySendEnterThroughToEnterAsync(markup, "Color =", sendThroughEnterOption: EnterKeyRule.AfterFullyTypedWord, expected: true);
@@ -47,20 +48,21 @@ public class TestAttribute : Attribute
         [Fact]
         public async Task CommitCharacterTest()
         {
-            const string markup = @"
-using System;
-class class1
-{
-    [Test($$
-    public void Goo()
-    {
-    }
-}
- 
-public class TestAttribute : Attribute
-{
-    public ConsoleColor Color { get; set; }
-}";
+            const string markup = """
+                using System;
+                class class1
+                {
+                    [Test($$
+                    public void Goo()
+                    {
+                    }
+                }
+
+                public class TestAttribute : Attribute
+                {
+                    public ConsoleColor Color { get; set; }
+                }
+                """;
 
             await VerifyCommonCommitCharactersAsync(markup, textTypedSoFar: "");
         }
@@ -68,20 +70,21 @@ public class TestAttribute : Attribute
         [Fact]
         public async Task SimpleAttributeUsage()
         {
-            var markup = @"
-using System;
-class class1
-{
-    [Test($$
-    public void Goo()
-    {
-    }
-}
- 
-public class TestAttribute : Attribute
-{
-    public ConsoleColor Color { get; set; }
-}";
+            var markup = """
+                using System;
+                class class1
+                {
+                    [Test($$
+                    public void Goo()
+                    {
+                    }
+                }
+
+                public class TestAttribute : Attribute
+                {
+                    public ConsoleColor Color { get; set; }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Color", displayTextSuffix: " =");
         }
@@ -89,21 +92,22 @@ public class TestAttribute : Attribute
         [Fact]
         public async Task AfterComma()
         {
-            var markup = @"
-using System;
-class class1
-{
-    [Test(Color = ConsoleColor.Black, $$
-    public void Goo()
-    {
-    }
-}
-
-public class TestAttribute : Attribute
-{
-    public ConsoleColor Color { get; set; }
-    public string Text { get; set; }
-}";
+            var markup = """
+                using System;
+                class class1
+                {
+                    [Test(Color = ConsoleColor.Black, $$
+                    public void Goo()
+                    {
+                    }
+                }
+
+                public class TestAttribute : Attribute
+                {
+                    public ConsoleColor Color { get; set; }
+                    public string Text { get; set; }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Text", displayTextSuffix: " =");
         }
@@ -111,21 +115,22 @@ public class TestAttribute : Attribute
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544345")]
         public async Task ExistingItemsAreFiltered()
         {
-            var markup = @"
-using System;
-class class1
-{
-    [Test(Color = ConsoleColor.Black, $$
-    public void Goo()
-    {
-    }
-}
-
-public class TestAttribute : Attribute
-{
-    public ConsoleColor Color { get; set; }
-    public string Text { get; set; }
-}";
+            var markup = """
+                using System;
+                class class1
+                {
+                    [Test(Color = ConsoleColor.Black, $$
+                    public void Goo()
+                    {
+                    }
+                }
+
+                public class TestAttribute : Attribute
+                {
+                    public ConsoleColor Color { get; set; }
+                    public string Text { get; set; }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Text", displayTextSuffix: " =");
             await VerifyItemIsAbsentAsync(markup, "Color", displayTextSuffix: " =");
@@ -134,18 +139,18 @@ public class TestAttribute : Attribute
         [Fact]
         public async Task AttributeConstructor()
         {
-            var markup = @"
-using System;
-class TestAttribute : Attribute
-{
-    public TestAttribute(int a = 42)
-    { }
-}
- 
-[Test($$
-class Goo
-{ }
-";
+            var markup = """
+                using System;
+                class TestAttribute : Attribute
+                {
+                    public TestAttribute(int a = 42)
+                    { }
+                }
+
+                [Test($$
+                class Goo
+                { }
+                """;
 
             await VerifyItemExistsAsync(markup, "a", displayTextSuffix: ":");
         }
@@ -153,18 +158,18 @@ class Goo
         [Fact]
         public async Task AttributeConstructorAfterComma()
         {
-            var markup = @"
-using System;
-class TestAttribute : Attribute
-{
-    public TestAttribute(int a = 42, string s = """")
-    { }
-}
-
-[Test(s:"""", $$
-class Goo
-{ }
-";
+            var markup = """
+                using System;
+                class TestAttribute : Attribute
+                {
+                    public TestAttribute(int a = 42, string s = "")
+                    { }
+                }
+
+                [Test(s:"", $$
+                class Goo
+                { }
+                """;
 
             await VerifyItemExistsAsync(markup, "a", displayTextSuffix: ":");
         }
@@ -172,21 +177,22 @@ class Goo
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545426")]
         public async Task TestPropertiesInScript()
         {
-            var markup = @"
-using System;
-
-class TestAttribute : Attribute
-{
-    public string Text { get; set; }
-    public TestAttribute(int number = 42)
-    {
-    }
-}
- 
-[Test($$
-class Goo
-{
-}";
+            var markup = """
+                using System;
+
+                class TestAttribute : Attribute
+                {
+                    public string Text { get; set; }
+                    public TestAttribute(int number = 42)
+                    {
+                    }
+                }
+
+                [Test($$
+                class Goo
+                {
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Text", displayTextSuffix: " =");
         }
@@ -194,20 +200,21 @@ class Goo
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1075278")]
         public async Task NotInComment()
         {
-            var markup = @"
-using System;
-class class1
-{
-    [Test( //$$
-    public void Goo()
-    {
-    }
-}
- 
-public class TestAttribute : Attribute
-{
-    public ConsoleColor Color { get; set; }
-}";
+            var markup = """
+                using System;
+                class class1
+                {
+                    [Test( //$$
+                    public void Goo()
+                    {
+                    }
+                }
+
+                public class TestAttribute : Attribute
+                {
+                    public ConsoleColor Color { get; set; }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AwaitCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AwaitCompletionProviderTests.cs
index 0724a99f4b546..c7e71393b0762 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AwaitCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/AwaitCompletionProviderTests.cs
@@ -63,35 +63,38 @@ static string GetDescription(string keyword, string tooltip)
         [Fact]
         public async Task TestNotInTypeContext()
         {
-            await VerifyAbsenceAsync(@"
-class Program
-{
-    $$
-}");
+            await VerifyAbsenceAsync("""
+                class Program
+                {
+                    $$
+                }
+                """);
         }
 
         [Fact]
         public async Task TestStatementInMethod()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  void F()
-  {
-    $$  }
-}", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  void F()
+                  {
+                    $$  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
         public async Task TestStatementInMethod_Async()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  async Task F()
-  {
-    $$  }
-}", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    $$  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
@@ -103,27 +106,27 @@ public async Task TestStatementInMethod_TopLevel()
         [Fact]
         public async Task TestExpressionInAsyncMethod()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  async Task F()
-  {
-    var z = $$  }
-}
-", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    var z = $$  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
         public async Task TestExpressionInNonAsyncMethodWithTaskReturn()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  Task F()
-  {
-    var z = $$  }
-}
-", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  Task F()
+                  {
+                    var z = $$  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
@@ -135,13 +138,14 @@ public async Task TestExpressionInAsyncMethod_TopLevel()
         [Fact]
         public async Task TestUsingStatement()
         {
-            await VerifyAbsenceAsync(@"
-class C
-{
-  async Task F()
-  {
-    using $$  }
-}", LanguageVersion.CSharp9);
+            await VerifyAbsenceAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    using $$  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
@@ -161,13 +165,14 @@ public async Task TestGlobalUsingDirective()
         [Fact]
         public async Task TestForeachStatement()
         {
-            await VerifyAbsenceAsync(@"
-class C
-{
-  async Task F()
-  {
-    foreach $$  }
-}", LanguageVersion.CSharp9);
+            await VerifyAbsenceAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    foreach $$  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
@@ -179,77 +184,86 @@ public async Task TestForeachStatement_TopLevel()
         [Fact]
         public async Task TestNotInQuery()
         {
-            await VerifyAbsenceAsync(@"
-class C
-{
-  async Task F()
-  {
-    var z = from a in ""char""
-          select $$  }
-    }
-", LanguageVersion.CSharp9);
+            await VerifyAbsenceAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    var z = from a in "char"
+                          select $$  }
+                    }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
         public async Task TestNotInQuery_TopLevel()
         {
             await VerifyAbsenceAsync(
-@"var z = from a in ""char""
-          select $$", LanguageVersion.CSharp9);
+                """
+                var z = from a in "char"
+                          select $$
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/907052")]
         public async Task TestInFinally()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  async Task F()
-  {
-    try { }
-finally { $$ }  }
-}", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    try { }
+                finally { $$ }  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/907052")]
         public async Task TestInFinally_TopLevel()
         {
             await VerifyKeywordAsync(
-@"try { }
-finally { $$ }", LanguageVersion.CSharp9);
+                """
+                try { }
+                finally { $$ }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/907052")]
         public async Task TestInCatch()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  async Task F()
-  {
-    try { }
-catch { $$ }  }
-}", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    try { }
+                catch { $$ }  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/907052")]
         public async Task TestInCatch_TopLevel()
         {
             await VerifyKeywordAsync(
-@"try { }
-catch { $$ }", LanguageVersion.CSharp9);
+                """
+                try { }
+                catch { $$ }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
         public async Task TestNotInLock()
         {
-            await VerifyAbsenceAsync(@"
-class C
-{
-  async Task F()
-  {
-    lock(this) { $$ }  }
-}", LanguageVersion.CSharp9);
+            await VerifyAbsenceAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    lock(this) { $$ }  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
@@ -261,34 +275,38 @@ public async Task TestNotInLock_TopLevel()
         [Fact]
         public async Task TestInAsyncLambdaInCatch()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  async Task F()
-  {
-    try { }
-catch { var z = async () => $$ }  }
-}", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    try { }
+                catch { var z = async () => $$ }  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
         public async Task TestInAsyncLambdaInCatch_TopLevel()
         {
             await VerifyKeywordAsync(
-@"try { }
-catch { var z = async () => $$ }", LanguageVersion.CSharp9);
+                """
+                try { }
+                catch { var z = async () => $$ }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
         public async Task TestAwaitInLock()
         {
-            await VerifyKeywordAsync(@"
-class C
-{
-  async Task F()
-  {
-    lock($$  }
-}", LanguageVersion.CSharp9);
+            await VerifyKeywordAsync("""
+                class C
+                {
+                  async Task F()
+                  {
+                    lock($$  }
+                }
+                """, LanguageVersion.CSharp9);
         }
 
         [Fact]
@@ -300,33 +318,33 @@ public async Task TestAwaitInLock_TopLevel()
         [Fact]
         public async Task TestDotAwaitSuggestAfterDotOnTask()
         {
-            await VerifyKeywordAsync(@"
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System.Threading.Tasks;
 
-class C
-{
-  async Task F(Task someTask)
-  {
-    someTask.$$
-  }
-}
-", dotAwait: true, dotAwaitf: true);
+                class C
+                {
+                  async Task F(Task someTask)
+                  {
+                    someTask.$$
+                  }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Fact]
         public async Task TestDotAwaitSuggestAfterDotOnTaskOfT()
         {
-            await VerifyKeywordAsync(@"
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System.Threading.Tasks;
 
-class C
-{
-  async Task F(Task<int> someTask)
-  {
-    someTask.$$
-  }
-}
-", dotAwait: true, dotAwaitf: true);
+                class C
+                {
+                  async Task F(Task<int> someTask)
+                  {
+                    someTask.$$
+                  }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Fact]
@@ -358,111 +376,116 @@ async Task F(ValueTask someTask)
         [Fact]
         public async Task TestDotAwaitSuggestAfterDotOnCustomAwaitable()
         {
-            await VerifyKeywordAsync(@"
-using System;
-using System.Runtime.CompilerServices;
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System;
+                using System.Runtime.CompilerServices;
+                using System.Threading.Tasks;
 
-public class DummyAwaiter: INotifyCompletion {
-    public bool IsCompleted => true;
-    public void OnCompleted(Action continuation) => continuation();
-    public void GetResult() {}
-}
+                public class DummyAwaiter: INotifyCompletion {
+                    public bool IsCompleted => true;
+                    public void OnCompleted(Action continuation) => continuation();
+                    public void GetResult() {}
+                }
 
-public class CustomAwaitable
-{
-    public DummyAwaiter GetAwaiter() => new DummyAwaiter();
-}
+                public class CustomAwaitable
+                {
+                    public DummyAwaiter GetAwaiter() => new DummyAwaiter();
+                }
 
-static class Program
-{
-    static async Task Main()
-    {
-        var awaitable = new CustomAwaitable();
-        awaitable.$$;
-    }
-}", dotAwait: true);
+                static class Program
+                {
+                    static async Task Main()
+                    {
+                        var awaitable = new CustomAwaitable();
+                        awaitable.$$;
+                    }
+                }
+                """, dotAwait: true);
         }
 
         [Fact]
         public async Task TestDotAwaitSuggestAfterDotOnCustomAwaitableButNotConfigureAwaitEvenIfPresent()
         {
-            await VerifyKeywordAsync(@"
-using System;
-using System.Runtime.CompilerServices;
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System;
+                using System.Runtime.CompilerServices;
+                using System.Threading.Tasks;
 
-public class DummyAwaiter: INotifyCompletion {
-    public bool IsCompleted => true;
-    public void OnCompleted(Action continuation) => continuation();
-    public void GetResult() {}
-}
+                public class DummyAwaiter: INotifyCompletion {
+                    public bool IsCompleted => true;
+                    public void OnCompleted(Action continuation) => continuation();
+                    public void GetResult() {}
+                }
 
-public class CustomAwaitable
-{
-    public DummyAwaiter GetAwaiter() => new DummyAwaiter();
-    public ConfiguredTaskAwaitable ConfigureAwait(bool continueOnCapturedContext) => default;
-}
+                public class CustomAwaitable
+                {
+                    public DummyAwaiter GetAwaiter() => new DummyAwaiter();
+                    public ConfiguredTaskAwaitable ConfigureAwait(bool continueOnCapturedContext) => default;
+                }
 
-static class Program
-{
-    static async Task Main()
-    {
-        var awaitable = new CustomAwaitable();
-        awaitable.$$;
-    }
-}", dotAwait: true, dotAwaitf: false);
+                static class Program
+                {
+                    static async Task Main()
+                    {
+                        var awaitable = new CustomAwaitable();
+                        awaitable.$$;
+                    }
+                }
+                """, dotAwait: true, dotAwaitf: false);
         }
 
         [Fact]
         public async Task TestDotAwaitSuggestAfterDotDot()
         {
-            await VerifyKeywordAsync(@"
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System.Threading.Tasks;
 
-static class Program
-{
-    static async Task Main(Task someTask)
-    {
-        someTask.$$.;
-    }
-}", dotAwait: true, dotAwaitf: true);
+                static class Program
+                {
+                    static async Task Main(Task someTask)
+                    {
+                        someTask.$$.;
+                    }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Fact]
         public async Task TestDotAwaitSuggestAfterDotBeforeType()
         {
-            await VerifyKeywordAsync(@"
-using System;
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System;
+                using System.Threading.Tasks;
 
-static class Program
-{
-    static async Task Main(Task someTask)
-    {
-        someTask.$$
-        Int32 i = 0;
-    }
-}", dotAwait: true, dotAwaitf: true);
+                static class Program
+                {
+                    static async Task Main(Task someTask)
+                    {
+                        someTask.$$
+                        Int32 i = 0;
+                    }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Fact]
         public async Task TestDotAwaitSuggestAfterDotBeforeAnotherAwait()
         {
-            await VerifyKeywordAsync(@"
-using System;
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System;
+                using System.Threading.Tasks;
 
-static class Program
-{
-    static async Task Main(Task someTask)
-    {
-        someTask.$$
-        await Test();
-    }
+                static class Program
+                {
+                    static async Task Main(Task someTask)
+                    {
+                        someTask.$$
+                        await Test();
+                    }
 
-    async Task Test() { }
-}", dotAwait: true, dotAwaitf: true);
+                    async Task Test() { }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Theory]
@@ -567,19 +590,20 @@ public async Task TestDotAwaitSuggestBeforeLocalFunction()
             // * only for locals (e.g. IParameterSymbols are fine) which
             //   * are declared with var
             //   * The return type of the local function is used as first name in a MemberAccess in the declarator
-            await VerifyKeywordAsync(@"
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System.Threading.Tasks;
 
-static class Program
-{
-    static async Task Main()
-    {
-        var local = Task.CompletedTask;
-        local.a$$
+                static class Program
+                {
+                    static async Task Main()
+                    {
+                        var local = Task.CompletedTask;
+                        local.a$$
 
-        Task LocalFunction() => Task.CompletedTask;
-    }
-}");
+                        Task LocalFunction() => Task.CompletedTask;
+                    }
+                }
+                """);
         }
 
         [Theory]
@@ -610,181 +634,181 @@ static async Task Main()
         [Fact]
         public async Task TestDotAwaitNotAfterDotOnTaskIfAlreadyAwaited()
         {
-            await VerifyAbsenceAsync(@"
-using System.Threading.Tasks;
+            await VerifyAbsenceAsync("""
+                using System.Threading.Tasks;
 
-class C
-{
-  async Task F(Task someTask)
-  {
-    await someTask.$$
-  }
-}
-");
+                class C
+                {
+                  async Task F(Task someTask)
+                  {
+                    await someTask.$$
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDotAwaitNotAfterTaskType()
         {
-            await VerifyAbsenceAsync(@"
-using System.Threading.Tasks;
+            await VerifyAbsenceAsync("""
+                using System.Threading.Tasks;
 
-class C
-{
-  async Task F()
-  {
-    Task.$$
-  }
-}
-");
+                class C
+                {
+                  async Task F()
+                  {
+                    Task.$$
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDotAwaitNotInLock()
         {
-            await VerifyAbsenceAsync(@"
-using System.Threading.Tasks;
+            await VerifyAbsenceAsync("""
+                using System.Threading.Tasks;
 
-class C
-{
-  async Task F(Task someTask)
-  {
-    lock(this) { someTask.$$ }
-  }
-}
-");
+                class C
+                {
+                  async Task F(Task someTask)
+                  {
+                    lock(this) { someTask.$$ }
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDotAwaitNotInLock_TopLevel()
         {
-            await VerifyAbsenceAsync(@"
-using System.Threading.Tasks;
+            await VerifyAbsenceAsync("""
+                using System.Threading.Tasks;
 
-lock(this) { Task.CompletedTask.$$ }
-");
+                lock(this) { Task.CompletedTask.$$ }
+                """);
         }
 
         [Fact]
         public async Task TestDotAwaitQueryNotInSelect()
         {
-            await VerifyAbsenceAsync(@"
-using System.Linq;
-using System.Threading.Tasks;
+            await VerifyAbsenceAsync("""
+                using System.Linq;
+                using System.Threading.Tasks;
 
-class C
-{
-  async Task F()
-  {
-    var z = from t in new[] { Task.CompletedTask }
-            select t.$$
-  }
-}
-");
+                class C
+                {
+                  async Task F()
+                  {
+                    var z = from t in new[] { Task.CompletedTask }
+                            select t.$$
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDotAwaitQueryInFirstFromClause()
         {
-            await VerifyKeywordAsync(@"
-using System.Linq;
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System.Linq;
+                using System.Threading.Tasks;
 
-class C
-{
-    async Task F()
-    {
-        var arrayTask2 = Task.FromResult(new int[0]);
-        var z = from t in arrayTask2.$$
-                select t;
-    }
-}
-", dotAwait: true, dotAwaitf: true);
+                class C
+                {
+                    async Task F()
+                    {
+                        var arrayTask2 = Task.FromResult(new int[0]);
+                        var z = from t in arrayTask2.$$
+                                select t;
+                    }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Fact]
         public async Task TestDotAwaitQueryNotInSecondFromClause()
         {
-            await VerifyNoItemsExistAsync(@"
-using System.Linq;
-using System.Threading.Tasks;
+            await VerifyNoItemsExistAsync("""
+                using System.Linq;
+                using System.Threading.Tasks;
 
-class C
-{
-    async Task F()
-    {
-        var array1 = new int[0];
-        var arrayTask2 = Task.FromResult(new int[0]);
-        var z = from i1 in array1
-                from i2 in arrayTask2.$$
-                select i2;
-    }
-}
-");
+                class C
+                {
+                    async Task F()
+                    {
+                        var array1 = new int[0];
+                        var arrayTask2 = Task.FromResult(new int[0]);
+                        var z = from i1 in array1
+                                from i2 in arrayTask2.$$
+                                select i2;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDotAwaitQueryNotInContinuation()
         {
-            await VerifyNoItemsExistAsync(@"
-using System.Linq;
-using System.Threading.Tasks;
+            await VerifyNoItemsExistAsync("""
+                using System.Linq;
+                using System.Threading.Tasks;
 
-class C
-{
-    async Task F()
-    {
-        var array1 = new int[0];
-        var arrayTask2 = Task.FromResult(new int[0]);
-        var z = from i1 in array1
-                select i1 into c
-                from i2 in arrayTask2.$$
-                select i2;
-    }
-}
-");
+                class C
+                {
+                    async Task F()
+                    {
+                        var array1 = new int[0];
+                        var arrayTask2 = Task.FromResult(new int[0]);
+                        var z = from i1 in array1
+                                select i1 into c
+                                from i2 in arrayTask2.$$
+                                select i2;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDotAwaitQueryInJoinClause()
         {
-            await VerifyKeywordAsync(@"
-using System.Linq;
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System.Linq;
+                using System.Threading.Tasks;
 
-class C
-{
-    async Task F()
-    {
-        var array1 = new int[0];
-        var arrayTask2 = Task.FromResult(new int[0]);
-        var z = from i1 in array1
-                join i2 in arrayTask2.$$ on i1 equals i2
-                select i1;
-    }
-}
-", dotAwait: true, dotAwaitf: true);
+                class C
+                {
+                    async Task F()
+                    {
+                        var array1 = new int[0];
+                        var arrayTask2 = Task.FromResult(new int[0]);
+                        var z = from i1 in array1
+                                join i2 in arrayTask2.$$ on i1 equals i2
+                                select i1;
+                    }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Fact]
         public async Task TestDotAwaitQueryInJoinIntoClause()
         {
-            await VerifyKeywordAsync(@"
-using System.Linq;
-using System.Threading.Tasks;
+            await VerifyKeywordAsync("""
+                using System.Linq;
+                using System.Threading.Tasks;
 
-class C
-{
-    async Task F()
-    {
-        var array1 = new int[0];
-        var arrayTask2 = Task.FromResult(new int[0]);
-        var z = from i1 in array1
-                join i2 in arrayTask2.$$ on i1 equals i2 into g
-                select g;
-    }
-}
-", dotAwait: true, dotAwaitf: true);
+                class C
+                {
+                    async Task F()
+                    {
+                        var array1 = new int[0];
+                        var arrayTask2 = Task.FromResult(new int[0]);
+                        var z = from i1 in array1
+                                join i2 in arrayTask2.$$ on i1 equals i2 into g
+                                select g;
+                    }
+                }
+                """, dotAwait: true, dotAwaitf: true);
         }
 
         [Fact]
@@ -798,17 +822,17 @@ public async Task TestDotAwaitNotAfterConditionalAccessOfTaskMembers()
             // Completion should not offer await, because the patterns above would change to much code.
             // This decision should be revised after https://github.com/dotnet/csharplang/issues/35 
             // is implemented.
-            await VerifyAbsenceAsync(@"
-using System.Threading.Tasks;
-
-class C
-{
-  async Task F(Task someTask)
-  {
-    someTask?.$$
-  }
-}
-");
+            await VerifyAbsenceAsync("""
+                using System.Threading.Tasks;
+
+                class C
+                {
+                  async Task F(Task someTask)
+                  {
+                    someTask?.$$
+                  }
+                }
+                """);
         }
 
         [Theory]
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ConversionCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ConversionCompletionProviderTests.cs
index f80093130a19f..e8ea064b58748 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ConversionCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ConversionCompletionProviderTests.cs
@@ -28,21 +28,21 @@ private static string FormatExplicitConversionDescription(string fromType, strin
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorIndexerCompletionItemsShouldBePlacedLastInCompletionList()
         {
-            var castCompletionItem = (await GetCompletionItemsAsync(@"
-public class C
-{
-    public static explicit operator float(C c) => 0;
-}
+            var castCompletionItem = (await GetCompletionItemsAsync("""
+                public class C
+                {
+                    public static explicit operator float(C c) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-", SourceCodeKind.Regular)).Single();
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """, SourceCodeKind.Regular)).Single();
 
             var completionList = new[] {
                 CompletionItem.Create("SomeText0"),
@@ -74,61 +74,61 @@ public static void Main()
         public async Task ExplicitUserDefinedConversionIsNotOfferedAfterNumberLiteral()
         {
             // User may want to type a floating point literal.
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static explicit operator float(C c) => 0;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static explicit operator float(C c) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        1.$$
-    }
-}
-", SourceCodeKind.Regular);
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        1.$$
+                    }
+                }
+                """, SourceCodeKind.Regular);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionIsSuggestedAfterDot()
         {
-            await VerifyItemExistsAsync(@"
-public class C
-{
-    public static explicit operator float(C c) => 0;
-}
+            await VerifyItemExistsAsync("""
+                public class C
+                {
+                    public static explicit operator float(C c) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-", "float", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """, "float", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionIsSuggestedIfMemberNameIsPartiallyWritten()
         {
-            await VerifyItemExistsAsync(@"
-public class C
-{
-    public void fly() { }
-    public static explicit operator float(C c) => 0;
-}
+            await VerifyItemExistsAsync("""
+                public class C
+                {
+                    public void fly() { }
+                    public static explicit operator float(C c) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.fl$$
-    }
-}
-", "float", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.fl$$
+                    }
+                }
+                """, "float", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
@@ -138,7 +138,9 @@ public static void Main()
         [InlineData("c.fl  $$", false)]
         [InlineData("c.($$", false)]
         [InlineData("c$$", false)]
-        [InlineData(@"""c.$$", false)]
+        [InlineData("""
+            "c.$$
+            """, false)]
         [InlineData("c?.$$", true)]
         [InlineData("((C)c).$$", true)]
         [InlineData("(true ? c : c).$$", true)]
@@ -169,40 +171,40 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionIsNotSuggestedOnStaticAccess()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static explicit operator float(C c) => 0;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static explicit operator float(C c) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        C.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        C.$$
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionIsNotSuggestedInNameofContext()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static explicit operator float(C c) => 0;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static explicit operator float(C c) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        var name = nameof(c.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        var name = nameof(c.$$
+                    }
+                }
+                """);
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
@@ -255,26 +257,26 @@ public void M()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionIsSuggestedForAllExplicitConversionsToOtherTypesAndNotForImplicitConversions()
         {
-            var items = await GetCompletionItemsAsync(@"
-public class C
-{
-    public static explicit operator float(C c) => 0;
-    public static explicit operator int(C c) => 0;
-    
-    public static explicit operator C(float f) => new C();
-    public static implicit operator C(string s) => new C();
-    public static implicit operator string(C c) => "";
-}
+            var items = await GetCompletionItemsAsync("""
+                public class C
+                {
+                    public static explicit operator float(C c) => 0;
+                    public static explicit operator int(C c) => 0;
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-", SourceCodeKind.Regular);
+                    public static explicit operator C(float f) => new C();
+                    public static implicit operator C(string s) => new C();
+                    public static implicit operator string(C c) => ";
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """, SourceCodeKind.Regular);
             Assert.Collection(items,
                 i => Assert.Equal("float", i.DisplayText),
                 i => Assert.Equal("int", i.DisplayText));
@@ -283,141 +285,145 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionIgnoresConversionLikeMethods()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static bool op_Explicit(C c) => false;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static bool op_Explicit(C c) => false;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionIgnoreMalformedOperators()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static explicit operator int() => 0;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static explicit operator int() => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionFromOtherTypeToTargetIsNotSuggested()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static explicit operator C(D d) => null;
-}
-public class D
-{
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static explicit operator C(D d) => null;
+                }
+                public class D
+                {
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var d = new D();
-        d.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var d = new D();
+                        d.$$
+                    }
+                }
+                """);
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitConversionOfNullableStructToNullableStructIsOffered()
         {
             // Lifted conversion https://docs.microsoft.com/hu-hu/dotnet/csharp/language-reference/language-specification/conversions#lifted-conversion-operators
-            await VerifyItemExistsAsync(@"
-public struct S {
-    public static explicit operator int(S _) => 0;
-}
-public class Program
-{
-    public static void Main()
-    {
-        S? s = null;
-        s.$$
-    }
-}
-", "int?", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
+            await VerifyItemExistsAsync("""
+                public struct S {
+                    public static explicit operator int(S _) => 0;
+                }
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        S? s = null;
+                        s.$$
+                    }
+                }
+                """, "int?", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitConversionDescriptionIsIsGiven()
         {
-            const string Markup = @"
-public struct S {
-        /// <summary>
-        /// Explicit conversion of <see cref=""S""/> to <see cref=""int""/>.
-        /// </summary>
-        /// <param name=""value"">The <see cref=""S""/> to convert</param>
-        public static explicit operator int(S value) => 0;
-}
+            const string Markup = """
+                public struct S {
+                        /// <summary>
+                        /// Explicit conversion of <see cref="S"/> to <see cref="int"/>.
+                        /// </summary>
+                        /// <param name="value">The <see cref="S"/> to convert</param>
+                        public static explicit operator int(S value) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var s = new S();
-        s.$$
-    }
-}
-";
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var s = new S();
+                        s.$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(Markup, "int", displayTextPrefix: "(", displayTextSuffix: ")",
                 glyph: (int)Glyph.Operator,
                 matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter },
                 expectedDescriptionOrNull:
-@"S.explicit operator int(S value)
-Explicit conversion of S to int.");
+                """
+                S.explicit operator int(S value)
+                Explicit conversion of S to int.
+                """);
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitConversionDescriptionIsIsGivenLifted()
         {
-            const string Markup = @"
-public struct S {
-        /// <summary>
-        /// Explicit conversion of <see cref=""S""/> to <see cref=""int""/>.
-        /// </summary>
-        /// <param name=""value"">The <see cref=""S""/> to convert</param>
-        public static explicit operator int(S value) => 0;
-}
+            const string Markup = """
+                public struct S {
+                        /// <summary>
+                        /// Explicit conversion of <see cref="S"/> to <see cref="int"/>.
+                        /// </summary>
+                        /// <param name="value">The <see cref="S"/> to convert</param>
+                        public static explicit operator int(S value) => 0;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        S? s = new S();
-        s.$$
-    }
-}
-";
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        S? s = new S();
+                        s.$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(Markup, "int?", displayTextPrefix: "(", displayTextSuffix: ")",
                 glyph: (int)Glyph.Operator,
                 matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter },
                 expectedDescriptionOrNull:
-@"S.explicit operator int?(S? value)
-Explicit conversion of S to int.");
+                """
+                S.explicit operator int?(S? value)
+                Explicit conversion of S to int.
+                """);
         }
 
         [WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
@@ -453,16 +459,16 @@ public static void Main()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitBuiltInNumericConversionDescriptionIsLikeAConversionOperatorDescription()
         {
-            const string Markup = @"
-public class Program
-{
-    public static void Main()
-    {
-        int i = 0;
-        i.$$
-    }
-}
-";
+            const string Markup = """
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        int i = 0;
+                        i.$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(Markup, "byte", displayTextPrefix: "(", displayTextSuffix: ")",
                 glyph: (int)Glyph.Operator,
                 matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter },
@@ -474,16 +480,16 @@ await VerifyItemExistsAsync(Markup, "byte", displayTextPrefix: "(", displayTextS
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitBuiltInNumericConversionDescriptionIsLikeAConversionOperatorDescriptionLifted()
         {
-            const string Markup = @"
-public class Program
-{
-    public static void Main()
-    {
-        int? i = 0;
-        i.$$
-    }
-}
-";
+            const string Markup = """
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        int? i = 0;
+                        i.$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(Markup, "byte?", displayTextPrefix: "(", displayTextSuffix: ")",
                 glyph: (int)Glyph.Operator,
                 matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter },
@@ -497,17 +503,17 @@ public async Task ExplicitBuiltInEnumConversionsAreSortedAndComplete()
         {
             // built-in enum conversions:
             // https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/language-specification/conversions#explicit-enumeration-conversions
-            var items = await GetCompletionItemsAsync(@"
-public enum E { One }
-public class Program
-{
-    public static void Main()
-    {
-        var e = E.One;
-        e.$$
-    }
-}
-", SourceCodeKind.Regular);
+            var items = await GetCompletionItemsAsync("""
+                public enum E { One }
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var e = E.One;
+                        e.$$
+                    }
+                }
+                """, SourceCodeKind.Regular);
             var expected = new[] { "byte", "char", "decimal", "double", "float", "int", "long", "sbyte", "short", "uint", "ulong", "ushort" };
             AssertEx.SetEqual(items.Select(i => i.DisplayText), expected);
         }
@@ -515,17 +521,17 @@ public static void Main()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitBuiltInEnumConversionDescriptionIsLikeAConversionOperatorDescription()
         {
-            const string Markup = @"
-public enum E { One }
-public class Program
-{
-    public static void Main()
-    {
-        var e = E.One;
-        e.$$
-    }
-}
-";
+            const string Markup = """
+                public enum E { One }
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var e = E.One;
+                        e.$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(Markup, "int", displayTextPrefix: "(", displayTextSuffix: ")",
                 glyph: (int)Glyph.Operator,
                 matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter },
@@ -537,17 +543,17 @@ await VerifyItemExistsAsync(Markup, "int", displayTextPrefix: "(", displayTextSu
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitBuiltInEnumConversionDescriptionIsLikeAConversionOperatorDescriptionLifted()
         {
-            const string Markup = @"
-public enum E { One }
-public class Program
-{
-    public static void Main()
-    {
-        E? e = E.One;
-        e.$$
-    }
-}
-";
+            const string Markup = """
+                public enum E { One }
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        E? e = E.One;
+                        e.$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(Markup, "int?", displayTextPrefix: "(", displayTextSuffix: ")",
                 glyph: (int)Glyph.Operator,
                 matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter },
@@ -559,23 +565,23 @@ await VerifyItemExistsAsync(Markup, "int?", displayTextPrefix: "(", displayTextS
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitBuiltInEnumConversionDescriptionIsLikeAConversionOperatorDescriptionUnimportedNamespaceMinimalName()
         {
-            const string Markup = @"
-namespace A.B
-{
-    public enum E { One }
-}
-namespace A.C
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var e = B.E.One;
-            e.$$
-        }
-    }
-}
-";
+            const string Markup = """
+                namespace A.B
+                {
+                    public enum E { One }
+                }
+                namespace A.C
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var e = B.E.One;
+                            e.$$
+                        }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(Markup, "int", displayTextPrefix: "(", displayTextSuffix: ")",
                 glyph: (int)Glyph.Operator,
                 matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter },
@@ -612,22 +618,22 @@ public static void Main()
         public async Task ExplicitUserDefinedConversionInheritedConversions()
         {
             // Base class lookup rule: https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/language-specification/conversions#processing-of-user-defined-explicit-conversions
-            await VerifyItemExistsAsync(@"
-public class Base {
-    public static explicit operator int(Base b) => 0;
-}
-public class Derived: Base
-{
-}
-public class Program
-{
-    public static void Main()
-    {
-        var d = new Derived();
-        var i = d.$$
-    }
-}
-", "int", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
+            await VerifyItemExistsAsync("""
+                public class Base {
+                    public static explicit operator int(Base b) => 0;
+                }
+                public class Derived: Base
+                {
+                }
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var d = new Derived();
+                        var i = d.$$
+                    }
+                }
+                """, "int", displayTextPrefix: "(", displayTextSuffix: ")", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
         }
 
         [WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
@@ -651,31 +657,31 @@ public static void Main()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnConversionIsRespected_EditorBrowsableStateNever()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var c = new C();
-            c.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class C
-    {
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public static explicit operator int(C _) => 0;
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var c = new C();
+                            c.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class C
+                    {
+                        [EditorBrowsable(EditorBrowsableState.Never)]
+                        public static explicit operator int(C _) => 0;
+                    }
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -690,33 +696,33 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnConversionIsRespected_EditorBrowsableStateNever_InheritedConversion_1()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var d = new Derived();
-            d.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class Base {
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public static explicit operator int(Base b) => 0;
-    }
-    public class Derived: Base
-    {
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var d = new Derived();
+                            d.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class Base {
+                        [EditorBrowsable(EditorBrowsableState.Never)]
+                        public static explicit operator int(Base b) => 0;
+                    }
+                    public class Derived: Base
+                    {
+                    }
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -731,33 +737,33 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnConversionIsRespected_EditorBrowsableStateNever_InheritedConversion_2()
         {
-            var markup = @"
-namespace N
-{
-    public class Derived: Base
-    {
-    }
-    public class Program
-    {
-        public static void Main()
-        {
-            var d = new Derived();
-            d.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class Base {
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public static explicit operator int(Base b) => 0;
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Derived: Base
+                    {
+                    }
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var d = new Derived();
+                            d.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class Base {
+                        [EditorBrowsable(EditorBrowsableState.Never)]
+                        public static explicit operator int(Base b) => 0;
+                    }
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -772,31 +778,31 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnConversionIsRespected_EditorBrowsableStateAdvanced()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var c = new C();
-            c.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class C
-    {
-        [EditorBrowsable(EditorBrowsableState.Advanced)]
-        public static explicit operator int(C _) => 0;
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var c = new C();
+                            c.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class C
+                    {
+                        [EditorBrowsable(EditorBrowsableState.Advanced)]
+                        public static explicit operator int(C _) => 0;
+                    }
+                }
+                """;
 
             HideAdvancedMembers = false;
 
@@ -824,22 +830,22 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task ExplicitUserDefinedConversionOfDerefenrencedPointerIsNotOffered()
         {
-            await VerifyNoItemsExistAsync(@"
-public struct S {
-    public static explicit operator int(S s) => 0;
-}
-public class Program
-{
-    public static void Main()
-    {
-        unsafe{
-            var s = new S();
-            S* p = &s;
-            var i = p->$$;
-        }
-    }
-}
-");
+            await VerifyNoItemsExistAsync("""
+                public struct S {
+                    public static explicit operator int(S s) => 0;
+                }
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        unsafe{
+                            var s = new S();
+                            S* p = &s;
+                            var i = p->$$;
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/CrefCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/CrefCompletionProviderTests.cs
index 80124190c4512..159537aefe18c 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/CrefCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/CrefCompletionProviderTests.cs
@@ -64,46 +64,52 @@ await VerifyAtEndOfFile_ItemPartiallyWrittenAsync(
         [Fact]
         public async Task NameCref()
         {
-            var text = @"using System;
-namespace Goo
-{
-    /// <see cref=""$$""/> 
-    class Program
-    {
-    }
-}";
+            var text = """
+                using System;
+                namespace Goo
+                {
+                    /// <see cref="$$"/> 
+                    class Program
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "AccessViolationException");
         }
 
         [Fact]
         public async Task QualifiedCref()
         {
-            var text = @"using System;
-namespace Goo
-{
+            var text = """
+                using System;
+                namespace Goo
+                {
 
-    class Program
-    {
-        /// <see cref=""Program.$$""/> 
-        void goo() { }
-    }
-}";
+                    class Program
+                    {
+                        /// <see cref="Program.$$"/> 
+                        void goo() { }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo");
         }
 
         [Fact]
         public async Task CrefArgumentList()
         {
-            var text = @"using System;
-namespace Goo
-{
+            var text = """
+                using System;
+                namespace Goo
+                {
 
-    class Program
-    {
-        /// <see cref=""Program.goo($$""/> 
-        void goo(int i) { }
-    }
-}";
+                    class Program
+                    {
+                        /// <see cref="Program.goo($$"/> 
+                        void goo(int i) { }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(text, "goo(int)");
             await VerifyItemExistsAsync(text, "int");
         }
@@ -111,60 +117,67 @@ void goo(int i) { }
         [Fact]
         public async Task CrefTypeParameterInArgumentList()
         {
-            var text = @"using System;
-namespace Goo
-{
+            var text = """
+                using System;
+                namespace Goo
+                {
 
-    class Program<T>
-    {
-        /// <see cref=""Program{Q}.goo($$""/> 
-        void goo(T i) { }
-    }
-}";
+                    class Program<T>
+                    {
+                        /// <see cref="Program{Q}.goo($$"/> 
+                        void goo(T i) { }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "Q");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/530887")]
         public async Task PrivateMember()
         {
-            var text = @"using System;
-namespace Goo
-{
-    /// <see cref=""C.$$""/> 
-    class Program<T>
-    {
-    }
-
-    class C
-    {
-        private int Private;
-        public int Public;
-    }
-}";
+            var text = """
+                using System;
+                namespace Goo
+                {
+                    /// <see cref="C.$$"/> 
+                    class Program<T>
+                    {
+                    }
+
+                    class C
+                    {
+                        private int Private;
+                        public int Public;
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "Private");
         }
 
         [Fact]
         public async Task AfterSingleQuote()
         {
-            var text = @"using System;
-namespace Goo
-{
-    /// <see cref='$$'/> 
-    class Program
-    {
-    }
-}";
+            var text = """
+                using System;
+                namespace Goo
+                {
+                    /// <see cref='$$'/> 
+                    class Program
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "Exception");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531315")]
         public async Task EscapePredefinedTypeName()
         {
-            var text = @"using System;
-/// <see cref=""@vo$$""/>
-class @void { }
-";
+            var text = """
+                using System;
+                /// <see cref="@vo$$"/>
+                class @void { }
+                """;
             await VerifyItemExistsAsync(text, "@void");
         }
 
@@ -172,15 +185,15 @@ class @void { }
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531345")]
         public async Task ShowParameterNames()
         {
-            var text = @"/// <see cref=""C.$$""/>
-class C
-{
-    void M(int x) { }
-    void M(ref long x) { }
-    void M<T>(T x) { }
-}
-
-";
+            var text = """
+                /// <see cref="C.$$"/>
+                class C
+                {
+                    void M(int x) { }
+                    void M(ref long x) { }
+                    void M<T>(T x) { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "M(int)");
             await VerifyItemExistsAsync(text, "M(ref long)");
             await VerifyItemExistsAsync(text, "M{T}(T)");
@@ -189,34 +202,34 @@ void M<T>(T x) { }
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531345")]
         public async Task ShowTypeParameterNames()
         {
-            var text = @"/// <see cref=""C$$""/>
-class C<TGoo>
-{
-    void M(int x) { }
-    void M(long x) { }
-    void M(string x) { }
-}
-
-";
+            var text = """
+                /// <see cref="C$$"/>
+                class C<TGoo>
+                {
+                    void M(int x) { }
+                    void M(long x) { }
+                    void M(string x) { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "C{TGoo}");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531156")]
         public async Task ShowConstructors()
         {
-            var text = @"using System;
-
-/// <see cref=""C.$$""/>
-class C<T>
-{
-    public C(int x) { }
+            var text = """
+                using System;
 
-    public C() { }
+                /// <see cref="C.$$"/>
+                class C<T>
+                {
+                    public C(int x) { }
 
-    public C(T x) { }
-}
+                    public C() { }
 
-";
+                    public C(T x) { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "C()");
             await VerifyItemExistsAsync(text, "C(T)");
             await VerifyItemExistsAsync(text, "C(int)");
@@ -225,73 +238,72 @@ public C(T x) { }
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/598679")]
         public async Task NoParamsModifier()
         {
-            var text = @"/// <summary>
-/// <see cref=""C.$$""/>
-/// </summary>
-class C
-        {
-            void M(int x) { }
-            void M(params long[] x) { }
-        }
-
-
-";
+            var text = """
+                /// <summary>
+                /// <see cref="C.$$"/>
+                /// </summary>
+                class C
+                        {
+                            void M(int x) { }
+                            void M(params long[] x) { }
+                        }
+                """;
             await VerifyItemExistsAsync(text, "M(long[])");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/607773")]
         public async Task UnqualifiedTypes()
         {
-            var text = @"
-using System.Collections.Generic;
-/// <see cref=""List{T}.$$""/>
-class C { }
-";
+            var text = """
+                using System.Collections.Generic;
+                /// <see cref="List{T}.$$"/>
+                class C { }
+                """;
             await VerifyItemExistsAsync(text, "Enumerator");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/607773")]
         public async Task CommitUnqualifiedTypes()
         {
-            var text = @"
-using System.Collections.Generic;
-/// <see cref=""List{T}.Enum$$""/>
-class C { }
-";
+            var text = """
+                using System.Collections.Generic;
+                /// <see cref="List{T}.Enum$$"/>
+                class C { }
+                """;
 
-            var expected = @"
-using System.Collections.Generic;
-/// <see cref=""List{T}.Enumerator ""/>
-class C { }
-";
+            var expected = """
+                using System.Collections.Generic;
+                /// <see cref="List{T}.Enumerator "/>
+                class C { }
+                """;
             await VerifyProviderCommitAsync(text, "Enumerator", expected, ' ');
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/642285")]
         public async Task SuggestOperators()
         {
-            var text = @"
-class Test
-{
-    /// <see cref=""$$""/>
-    public static Test operator !(Test t)
-    {
-        return new Test();
-    }
-    public static int operator +(Test t1, Test t2) // Invoke FAR here on operator
-    {
-        return 1;
-    }
-    public static bool operator true(Test t)
-    {
-        return true;
-    }
-    public static bool operator false(Test t)
-    {
-        return false;
-    }
-}
-";
+            var text = """
+                class Test
+                {
+                    /// <see cref="$$"/>
+                    public static Test operator !(Test t)
+                    {
+                        return new Test();
+                    }
+                    public static int operator +(Test t1, Test t2) // Invoke FAR here on operator
+                    {
+                        return 1;
+                    }
+                    public static bool operator true(Test t)
+                    {
+                        return true;
+                    }
+                    public static bool operator false(Test t)
+                    {
+                        return false;
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "operator !(Test)");
             await VerifyItemExistsAsync(text, "operator +(Test, Test)");
             await VerifyItemExistsAsync(text, "operator true(Test)");
@@ -301,49 +313,51 @@ public static bool operator false(Test t)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/641096")]
         public async Task SuggestIndexers()
         {
-            var text = @"
-/// <see cref=""thi$$""/>
-class Program
-{
-    int[] arr;
+            var text = """
+                /// <see cref="thi$$"/>
+                class Program
+                {
+                    int[] arr;
 
-    public int this[int i]
-    {
-        get { return arr[i]; }
-    }
-}
-";
+                    public int this[int i]
+                    {
+                        get { return arr[i]; }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "this[int]");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/531315")]
         public async Task CommitEscapedPredefinedTypeName()
         {
-            var text = @"using System;
-/// <see cref=""@vo$$""/>
-class @void { }
-";
+            var text = """
+                using System;
+                /// <see cref="@vo$$"/>
+                class @void { }
+                """;
 
-            var expected = @"using System;
-/// <see cref=""@void ""/>
-class @void { }
-";
+            var expected = """
+                using System;
+                /// <see cref="@void "/>
+                class @void { }
+                """;
             await VerifyProviderCommitAsync(text, "@void", expected, ' ');
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/598159")]
         public async Task RefOutModifiers()
         {
-            var text = @"/// <summary>
-/// <see cref=""C.$$""/>
-/// </summary>
-class C
-{
-    void M(ref int x) { }
-    void M(out long x) { }
-}
-
-";
+            var text = """
+                /// <summary>
+                /// <see cref="C.$$"/>
+                /// </summary>
+                class C
+                {
+                    void M(ref int x) { }
+                    void M(out long x) { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "M(ref int)");
             await VerifyItemExistsAsync(text, "M(out long)");
         }
@@ -351,28 +365,30 @@ void M(out long x) { }
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/673587")]
         public async Task NestedNamespaces()
         {
-            var text = @"namespace N
-{
-    class C
-    {
-        void sub() { }
-    }
-    namespace N
-    {
-        class C
-        { }
-    }
-}
-class Program
-{
-    /// <summary>
-    /// <see cref=""N.$$""/> // type N. here
-    /// </summary>
-    static void Main(string[] args)
-    {
+            var text = """
+                namespace N
+                {
+                    class C
+                    {
+                        void sub() { }
+                    }
+                    namespace N
+                    {
+                        class C
+                        { }
+                    }
+                }
+                class Program
+                {
+                    /// <summary>
+                    /// <see cref="N.$$"/> // type N. here
+                    /// </summary>
+                    static void Main(string[] args)
+                    {
 
-    }
-}";
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "N");
             await VerifyItemExistsAsync(text, "C");
         }
@@ -380,51 +396,52 @@ static void Main(string[] args)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/730338")]
         public async Task PermitTypingTypeParameters()
         {
-            var text = @"
-using System.Collections.Generic;
-/// <see cref=""List$$""/>
-class C { }
-";
+            var text = """
+                using System.Collections.Generic;
+                /// <see cref="List$$"/>
+                class C { }
+                """;
 
-            var expected = @"
-using System.Collections.Generic;
-/// <see cref=""List{""/>
-class C { }
-";
+            var expected = """
+                using System.Collections.Generic;
+                /// <see cref="List{"/>
+                class C { }
+                """;
             await VerifyProviderCommitAsync(text, "List{T}", expected, '{');
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/730338")]
         public async Task PermitTypingParameterTypes()
         {
-            var text = @"
-using System.Collections.Generic;
-/// <see cref=""goo$$""/>
-class C 
-{ 
-    public void goo(int x) { }
-}
-";
+            var text = """
+                using System.Collections.Generic;
+                /// <see cref="goo$$"/>
+                class C 
+                { 
+                    public void goo(int x) { }
+                }
+                """;
 
-            var expected = @"
-using System.Collections.Generic;
-/// <see cref=""goo(""/>
-class C 
-{ 
-    public void goo(int x) { }
-}
-";
+            var expected = """
+                using System.Collections.Generic;
+                /// <see cref="goo("/>
+                class C 
+                { 
+                    public void goo(int x) { }
+                }
+                """;
             await VerifyProviderCommitAsync(text, "goo(int)", expected, '(');
         }
 
         [Fact]
         public async Task CrefCompletionSpeculatesOutsideTrivia()
         {
-            var text = @"
-/// <see cref=""$$
-class C
-{
-}";
+            var text = """
+                /// <see cref="$$
+                class C
+                {
+                }
+                """;
             using var workspace = TestWorkspace.Create(LanguageNames.CSharp, new CSharpCompilationOptions(OutputKind.ConsoleApplication), new CSharpParseOptions(), new[] { text }, composition: GetComposition());
             var called = false;
 
@@ -451,14 +468,14 @@ class C
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/16060")]
         public async Task SpecialTypeNames()
         {
-            var text = @"
-using System;
-/// <see cref=""$$""/>
-class C 
-{ 
-    public void goo(int x) { }
-}
-";
+            var text = """
+                using System;
+                /// <see cref="$$"/>
+                class C 
+                { 
+                    public void goo(int x) { }
+                }
+                """;
 
             await VerifyItemExistsAsync(text, "uint");
             await VerifyItemExistsAsync(text, "UInt32");
@@ -467,14 +484,14 @@ public void goo(int x) { }
         [Fact]
         public async Task NoSuggestionAfterEmptyCref()
         {
-            var text = @"
-using System;
-/// <see cref="""" $$
-class C 
-{ 
-    public void goo(int x) { }
-}
-";
+            var text = """
+                using System;
+                /// <see cref="" $$
+                class C 
+                { 
+                    public void goo(int x) { }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(text);
         }
@@ -482,14 +499,14 @@ public void goo(int x) { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23957")]
         public async Task CRef_InParameter()
         {
-            var text = @"
-using System;
-class C 
-{ 
-    /// <see cref=""C.My$$
-    public void MyMethod(in int x) { }
-}
-";
+            var text = """
+                using System;
+                class C 
+                { 
+                    /// <see cref="C.My$$
+                    public void MyMethod(in int x) { }
+                }
+                """;
 
             await VerifyItemExistsAsync(text, "MyMethod(in int)");
         }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests.cs
index 87ae475adfc87..9e82b4cb84265 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests.cs
@@ -23,307 +23,309 @@ namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests.Completion.CompletionSe
     [Trait(Traits.Feature, Traits.Features.Completion)]
     public class DeclarationNameCompletionProviderTests : AbstractCSharpCompletionProviderTests
     {
-        private const string Span = @"
-namespace System
-{
-    public readonly ref struct Span<T>
-    {
-        private readonly T[] arr;
-        public ref T this[int i] => ref arr[i];
-        public override int GetHashCode() => 1;
-        public int Length { get; }
-        unsafe public Span(void* pointer, int length)
-        {
-            this.arr = Helpers.ToArray<T>(pointer, length);
-            this.Length = length;
-        }
-        public Span(T[] arr)
-        {
-            this.arr = arr;
-            this.Length = arr.Length;
-        }
-        public void CopyTo(Span<T> other) { }
-        /// <summary>Gets an enumerator for this span.</summary>
-        public Enumerator GetEnumerator() => new Enumerator(this);
-        /// <summary>Enumerates the elements of a <see cref=""Span{T}""/>.</summary>
-        public ref struct Enumerator
-        {
-            /// <summary>The span being enumerated.</summary>
-            private readonly Span<T> _span;
-            /// <summary>The next index to yield.</summary>
-            private int _index;
-            /// <summary>Initialize the enumerator.</summary>
-            /// <param name=""span"">The span to enumerate.</param>
-            internal Enumerator(Span<T> span)
-            {
-                _span = span;
-                _index = -1;
-            }
-            /// <summary>Advances the enumerator to the next element of the span.</summary>
-            public bool MoveNext()
+        private const string Span = """
+            namespace System
             {
-                int index = _index + 1;
-                if (index < _span.Length)
+                public readonly ref struct Span<T>
                 {
-                    _index = index;
-                    return true;
+                    private readonly T[] arr;
+                    public ref T this[int i] => ref arr[i];
+                    public override int GetHashCode() => 1;
+                    public int Length { get; }
+                    unsafe public Span(void* pointer, int length)
+                    {
+                        this.arr = Helpers.ToArray<T>(pointer, length);
+                        this.Length = length;
+                    }
+                    public Span(T[] arr)
+                    {
+                        this.arr = arr;
+                        this.Length = arr.Length;
+                    }
+                    public void CopyTo(Span<T> other) { }
+                    /// <summary>Gets an enumerator for this span.</summary>
+                    public Enumerator GetEnumerator() => new Enumerator(this);
+                    /// <summary>Enumerates the elements of a <see cref="Span{T}"/>.</summary>
+                    public ref struct Enumerator
+                    {
+                        /// <summary>The span being enumerated.</summary>
+                        private readonly Span<T> _span;
+                        /// <summary>The next index to yield.</summary>
+                        private int _index;
+                        /// <summary>Initialize the enumerator.</summary>
+                        /// <param name="span">The span to enumerate.</param>
+                        internal Enumerator(Span<T> span)
+                        {
+                            _span = span;
+                            _index = -1;
+                        }
+                        /// <summary>Advances the enumerator to the next element of the span.</summary>
+                        public bool MoveNext()
+                        {
+                            int index = _index + 1;
+                            if (index < _span.Length)
+                            {
+                                _index = index;
+                                return true;
+                            }
+                            return false;
+                        }
+                        /// <summary>Gets the element at the current position of the enumerator.</summary>
+                        public ref T Current
+                        {
+                            get => ref _span[_index];
+                        }
+                    }
+                    public static implicit operator Span<T>(T[] array) => new Span<T>(array);
+                    public Span<T> Slice(int offset, int length)
+                    {
+                        var copy = new T[length];
+                        Array.Copy(arr, offset, copy, 0, length);
+                        return new Span<T>(copy);
+                    }
                 }
-                return false;
-            }
-            /// <summary>Gets the element at the current position of the enumerator.</summary>
-            public ref T Current
-            {
-                get => ref _span[_index];
-            }
-        }
-        public static implicit operator Span<T>(T[] array) => new Span<T>(array);
-        public Span<T> Slice(int offset, int length)
-        {
-            var copy = new T[length];
-            Array.Copy(arr, offset, copy, 0, length);
-            return new Span<T>(copy);
-        }
-    }
-    public readonly ref struct ReadOnlySpan<T>
-    {
-        private readonly T[] arr;
-        public ref readonly T this[int i] => ref arr[i];
-        public override int GetHashCode() => 2;
-        public int Length { get; }
-        unsafe public ReadOnlySpan(void* pointer, int length)
-        {
-            this.arr = Helpers.ToArray<T>(pointer, length);
-            this.Length = length;
-        }
-        public ReadOnlySpan(T[] arr)
-        {
-            this.arr = arr;
-            this.Length = arr.Length;
-        }
-        public void CopyTo(Span<T> other) { }
-        /// <summary>Gets an enumerator for this span.</summary>
-        public Enumerator GetEnumerator() => new Enumerator(this);
-        /// <summary>Enumerates the elements of a <see cref=""Span{T}""/>.</summary>
-        public ref struct Enumerator
-        {
-            /// <summary>The span being enumerated.</summary>
-            private readonly ReadOnlySpan<T> _span;
-            /// <summary>The next index to yield.</summary>
-            private int _index;
-            /// <summary>Initialize the enumerator.</summary>
-            /// <param name=""span"">The span to enumerate.</param>
-            internal Enumerator(ReadOnlySpan<T> span)
-            {
-                _span = span;
-                _index = -1;
-            }
-            /// <summary>Advances the enumerator to the next element of the span.</summary>
-            public bool MoveNext()
-            {
-                int index = _index + 1;
-                if (index < _span.Length)
+                public readonly ref struct ReadOnlySpan<T>
                 {
-                    _index = index;
-                    return true;
+                    private readonly T[] arr;
+                    public ref readonly T this[int i] => ref arr[i];
+                    public override int GetHashCode() => 2;
+                    public int Length { get; }
+                    unsafe public ReadOnlySpan(void* pointer, int length)
+                    {
+                        this.arr = Helpers.ToArray<T>(pointer, length);
+                        this.Length = length;
+                    }
+                    public ReadOnlySpan(T[] arr)
+                    {
+                        this.arr = arr;
+                        this.Length = arr.Length;
+                    }
+                    public void CopyTo(Span<T> other) { }
+                    /// <summary>Gets an enumerator for this span.</summary>
+                    public Enumerator GetEnumerator() => new Enumerator(this);
+                    /// <summary>Enumerates the elements of a <see cref="Span{T}"/>.</summary>
+                    public ref struct Enumerator
+                    {
+                        /// <summary>The span being enumerated.</summary>
+                        private readonly ReadOnlySpan<T> _span;
+                        /// <summary>The next index to yield.</summary>
+                        private int _index;
+                        /// <summary>Initialize the enumerator.</summary>
+                        /// <param name="span">The span to enumerate.</param>
+                        internal Enumerator(ReadOnlySpan<T> span)
+                        {
+                            _span = span;
+                            _index = -1;
+                        }
+                        /// <summary>Advances the enumerator to the next element of the span.</summary>
+                        public bool MoveNext()
+                        {
+                            int index = _index + 1;
+                            if (index < _span.Length)
+                            {
+                                _index = index;
+                                return true;
+                            }
+                            return false;
+                        }
+                        /// <summary>Gets the element at the current position of the enumerator.</summary>
+                        public ref readonly T Current
+                        {
+                            get => ref _span[_index];
+                        }
+                    }
+                    public static implicit operator ReadOnlySpan<T>(T[] array) => array == null ? default : new ReadOnlySpan<T>(array);
+                    public static implicit operator ReadOnlySpan<T>(string stringValue) => string.IsNullOrEmpty(stringValue) ? default : new ReadOnlySpan<T>((T[])(object)stringValue.ToCharArray());
+                    public ReadOnlySpan<T> Slice(int offset, int length)
+                    {
+                        var copy = new T[length];
+                        Array.Copy(arr, offset, copy, 0, length);
+                        return new ReadOnlySpan<T>(copy);
+                    }
                 }
-                return false;
-            }
-            /// <summary>Gets the element at the current position of the enumerator.</summary>
-            public ref readonly T Current
-            {
-                get => ref _span[_index];
-            }
-        }
-        public static implicit operator ReadOnlySpan<T>(T[] array) => array == null ? default : new ReadOnlySpan<T>(array);
-        public static implicit operator ReadOnlySpan<T>(string stringValue) => string.IsNullOrEmpty(stringValue) ? default : new ReadOnlySpan<T>((T[])(object)stringValue.ToCharArray());
-        public ReadOnlySpan<T> Slice(int offset, int length)
-        {
-            var copy = new T[length];
-            Array.Copy(arr, offset, copy, 0, length);
-            return new ReadOnlySpan<T>(copy);
-        }
-    }
-    public readonly ref struct SpanLike<T>
-    {
-        public readonly Span<T> field;
-    }
-    public enum Color: sbyte
-    {
-        Red,
-        Green,
-        Blue
-    }
-    public static unsafe class Helpers
-    {
-        public static T[] ToArray<T>(void* ptr, int count)
-        {
-            if (ptr == null)
-            {
-                return null;
-            }
-            if (typeof(T) == typeof(int))
-            {
-                var arr = new int[count];
-                for(int i = 0; i < count; i++)
+                public readonly ref struct SpanLike<T>
                 {
-                    arr[i] = ((int*)ptr)[i];
+                    public readonly Span<T> field;
                 }
-                return (T[])(object)arr;
-            }
-            if (typeof(T) == typeof(byte))
-            {
-                var arr = new byte[count];
-                for(int i = 0; i < count; i++)
+                public enum Color: sbyte
                 {
-                    arr[i] = ((byte*)ptr)[i];
+                    Red,
+                    Green,
+                    Blue
                 }
-                return (T[])(object)arr;
-            }
-            if (typeof(T) == typeof(char))
-            {
-                var arr = new char[count];
-                for(int i = 0; i < count; i++)
+                public static unsafe class Helpers
                 {
-                    arr[i] = ((char*)ptr)[i];
+                    public static T[] ToArray<T>(void* ptr, int count)
+                    {
+                        if (ptr == null)
+                        {
+                            return null;
+                        }
+                        if (typeof(T) == typeof(int))
+                        {
+                            var arr = new int[count];
+                            for(int i = 0; i < count; i++)
+                            {
+                                arr[i] = ((int*)ptr)[i];
+                            }
+                            return (T[])(object)arr;
+                        }
+                        if (typeof(T) == typeof(byte))
+                        {
+                            var arr = new byte[count];
+                            for(int i = 0; i < count; i++)
+                            {
+                                arr[i] = ((byte*)ptr)[i];
+                            }
+                            return (T[])(object)arr;
+                        }
+                        if (typeof(T) == typeof(char))
+                        {
+                            var arr = new char[count];
+                            for(int i = 0; i < count; i++)
+                            {
+                                arr[i] = ((char*)ptr)[i];
+                            }
+                            return (T[])(object)arr;
+                        }
+                        if (typeof(T) == typeof(Color))
+                        {
+                            var arr = new Color[count];
+                            for(int i = 0; i < count; i++)
+                            {
+                                arr[i] = ((Color*)ptr)[i];
+                            }
+                            return (T[])(object)arr;
+                        }
+                        throw new Exception("add a case for: " + typeof(T));
+                    }
                 }
-                return (T[])(object)arr;
             }
-            if (typeof(T) == typeof(Color))
+            """;
+
+        private const string IAsyncEnumerable = """
+            namespace System
             {
-                var arr = new Color[count];
-                for(int i = 0; i < count; i++)
+                public interface IAsyncDisposable
                 {
-                    arr[i] = ((Color*)ptr)[i];
+                    System.Threading.Tasks.ValueTask DisposeAsync();
                 }
-                return (T[])(object)arr;
             }
-            throw new Exception(""add a case for: "" + typeof(T));
-        }
-    }
-}";
-
-        private const string IAsyncEnumerable = @"
-namespace System
-{
-    public interface IAsyncDisposable
-    {
-        System.Threading.Tasks.ValueTask DisposeAsync();
-    }
-}
 
-namespace System.Runtime.CompilerServices
-{
-    using System.Threading.Tasks;
+            namespace System.Runtime.CompilerServices
+            {
+                using System.Threading.Tasks;
 
-    public sealed class AsyncMethodBuilderAttribute : Attribute
-    {
-        public AsyncMethodBuilderAttribute(Type builderType) { }
-        public Type BuilderType { get; }
-    }
+                public sealed class AsyncMethodBuilderAttribute : Attribute
+                {
+                    public AsyncMethodBuilderAttribute(Type builderType) { }
+                    public Type BuilderType { get; }
+                }
 
-    public struct AsyncValueTaskMethodBuilder
-    {
-        public ValueTask Task => default;
-
-        public static AsyncValueTaskMethodBuilder Create() => default;
-        public void AwaitOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
-            where TAwaiter : INotifyCompletion
-            where TStateMachine : IAsyncStateMachine {}
-
-        public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
-            where TAwaiter : ICriticalNotifyCompletion
-            where TStateMachine : IAsyncStateMachine {}
-        public void SetException(Exception exception) {}
-        public void SetResult() {}
-        public void SetStateMachine(IAsyncStateMachine stateMachine) {}
-        public void Start<TStateMachine>(ref TStateMachine stateMachine) where TStateMachine : IAsyncStateMachine {}
-    }
+                public struct AsyncValueTaskMethodBuilder
+                {
+                    public ValueTask Task => default;
+
+                    public static AsyncValueTaskMethodBuilder Create() => default;
+                    public void AwaitOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
+                        where TAwaiter : INotifyCompletion
+                        where TStateMachine : IAsyncStateMachine {}
+
+                    public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
+                        where TAwaiter : ICriticalNotifyCompletion
+                        where TStateMachine : IAsyncStateMachine {}
+                    public void SetException(Exception exception) {}
+                    public void SetResult() {}
+                    public void SetStateMachine(IAsyncStateMachine stateMachine) {}
+                    public void Start<TStateMachine>(ref TStateMachine stateMachine) where TStateMachine : IAsyncStateMachine {}
+                }
 
-    public readonly struct ValueTaskAwaiter : ICriticalNotifyCompletion, INotifyCompletion
-    {
-        public bool IsCompleted => default;
+                public readonly struct ValueTaskAwaiter : ICriticalNotifyCompletion, INotifyCompletion
+                {
+                    public bool IsCompleted => default;
 
-        public void GetResult() { }
-        public void OnCompleted(Action continuation) { }
-        public void UnsafeOnCompleted(Action continuation) { }
-    }
+                    public void GetResult() { }
+                    public void OnCompleted(Action continuation) { }
+                    public void UnsafeOnCompleted(Action continuation) { }
+                }
 
-    public readonly struct ValueTaskAwaiter<TResult> : ICriticalNotifyCompletion, INotifyCompletion
-    {
-        public bool IsCompleted => default;
-        public TResult GetResult() => default;
-        public void OnCompleted(Action continuation) { }
-        public void UnsafeOnCompleted(Action continuation) { }
-    }
-}
+                public readonly struct ValueTaskAwaiter<TResult> : ICriticalNotifyCompletion, INotifyCompletion
+                {
+                    public bool IsCompleted => default;
+                    public TResult GetResult() => default;
+                    public void OnCompleted(Action continuation) { }
+                    public void UnsafeOnCompleted(Action continuation) { }
+                }
+            }
 
-namespace System.Threading.Tasks
-{
-    using System.Runtime.CompilerServices;
+            namespace System.Threading.Tasks
+            {
+                using System.Runtime.CompilerServices;
 
-    [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder))]
-    public readonly struct ValueTask : IEquatable<ValueTask>
-    {
-        public ValueTask(Task task) {}
-        public ValueTask(IValueTaskSource source, short token) {}
-
-        public bool IsCompleted => default;
-        public bool IsCompletedSuccessfully => default;
-        public bool IsFaulted => default;
-        public bool IsCanceled => default;
-
-        public Task AsTask() => default;
-        public ConfiguredValueTaskAwaitable ConfigureAwait(bool continueOnCapturedContext) => default;
-        public override bool Equals(object obj) => default;
-        public bool Equals(ValueTask other) => default;
-        public ValueTaskAwaiter GetAwaiter() => default;
-        public override int GetHashCode() => default;
-        public ValueTask Preserve() => default;
-
-        public static bool operator ==(ValueTask left, ValueTask right) => default;
-        public static bool operator !=(ValueTask left, ValueTask right) => default;
-    }
+                [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder))]
+                public readonly struct ValueTask : IEquatable<ValueTask>
+                {
+                    public ValueTask(Task task) {}
+                    public ValueTask(IValueTaskSource source, short token) {}
+
+                    public bool IsCompleted => default;
+                    public bool IsCompletedSuccessfully => default;
+                    public bool IsFaulted => default;
+                    public bool IsCanceled => default;
+
+                    public Task AsTask() => default;
+                    public ConfiguredValueTaskAwaitable ConfigureAwait(bool continueOnCapturedContext) => default;
+                    public override bool Equals(object obj) => default;
+                    public bool Equals(ValueTask other) => default;
+                    public ValueTaskAwaiter GetAwaiter() => default;
+                    public override int GetHashCode() => default;
+                    public ValueTask Preserve() => default;
+
+                    public static bool operator ==(ValueTask left, ValueTask right) => default;
+                    public static bool operator !=(ValueTask left, ValueTask right) => default;
+                }
 
-    [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder<>))]
-    public readonly struct ValueTask<TResult> : IEquatable<ValueTask<TResult>>
-    {
-        public ValueTask(TResult result) {}
-        public ValueTask(Task<TResult> task) {}
-        public ValueTask(IValueTaskSource<TResult> source, short token) {}
-
-        public bool IsFaulted => default;
-        public bool IsCompletedSuccessfully => default;
-        public bool IsCompleted => default;
-        public bool IsCanceled => default;
-        public TResult Result => default;
-
-        public Task<TResult> AsTask() => default;
-        public ConfiguredValueTaskAwaitable<TResult> ConfigureAwait(bool continueOnCapturedContext) => default;
-
-        public bool Equals(ValueTask<TResult> other) => default;
-        public override bool Equals(object obj) => default;
-        public ValueTaskAwaiter<TResult> GetAwaiter() => default;
-        public override int GetHashCode() => default;
-        public ValueTask<TResult> Preserve() => default;
-        public override string ToString() => default;
-        public static bool operator ==(ValueTask<TResult> left, ValueTask<TResult> right) => default;
-        public static bool operator !=(ValueTask<TResult> left, ValueTask<TResult> right) => default;
-    }
-}
+                [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder<>))]
+                public readonly struct ValueTask<TResult> : IEquatable<ValueTask<TResult>>
+                {
+                    public ValueTask(TResult result) {}
+                    public ValueTask(Task<TResult> task) {}
+                    public ValueTask(IValueTaskSource<TResult> source, short token) {}
+
+                    public bool IsFaulted => default;
+                    public bool IsCompletedSuccessfully => default;
+                    public bool IsCompleted => default;
+                    public bool IsCanceled => default;
+                    public TResult Result => default;
+
+                    public Task<TResult> AsTask() => default;
+                    public ConfiguredValueTaskAwaitable<TResult> ConfigureAwait(bool continueOnCapturedContext) => default;
+
+                    public bool Equals(ValueTask<TResult> other) => default;
+                    public override bool Equals(object obj) => default;
+                    public ValueTaskAwaiter<TResult> GetAwaiter() => default;
+                    public override int GetHashCode() => default;
+                    public ValueTask<TResult> Preserve() => default;
+                    public override string ToString() => default;
+                    public static bool operator ==(ValueTask<TResult> left, ValueTask<TResult> right) => default;
+                    public static bool operator !=(ValueTask<TResult> left, ValueTask<TResult> right) => default;
+                }
+            }
 
-namespace System.Collections.Generic
-{
-    public interface IAsyncEnumerable<out T>
-    {
-        IAsyncEnumerator<T> GetAsyncEnumerator();
-    }
+            namespace System.Collections.Generic
+            {
+                public interface IAsyncEnumerable<out T>
+                {
+                    IAsyncEnumerator<T> GetAsyncEnumerator();
+                }
 
-    public interface IAsyncEnumerator<out T> : IAsyncDisposable
-    {
-        System.Threading.Tasks.ValueTask<bool> MoveNextAsync();
-        T Current { get; }
-    }
-}";
+                public interface IAsyncEnumerator<out T> : IAsyncDisposable
+                {
+                    System.Threading.Tasks.ValueTask<bool> MoveNextAsync();
+                    T Current { get; }
+                }
+            }
+            """;
 
         internal override Type GetCompletionProviderType()
             => typeof(DeclarationNameCompletionProvider);
@@ -362,12 +364,12 @@ public class MyClass
         [Fact]
         public async Task NameWithOnlyType1()
         {
-            var markup = @"
-public class MyClass
-{
-    MyClass $$
-}
-";
+            var markup = """
+                public class MyClass
+                {
+                    MyClass $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myClass", glyph: (int)Glyph.FieldPublic);
             await VerifyItemExistsAsync(markup, "MyClass", glyph: (int)Glyph.PropertyPublic);
             await VerifyItemExistsAsync(markup, "GetMyClass", glyph: (int)Glyph.MethodPublic);
@@ -376,37 +378,37 @@ public class MyClass
         [Fact]
         public async Task AsyncTaskOfT()
         {
-            var markup = @"
-using System.Threading.Tasks;
-public class C
-{
-    async Task<C> $$
-}
-";
+            var markup = """
+                using System.Threading.Tasks;
+                public class C
+                {
+                    async Task<C> $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "GetCAsync");
         }
 
         [Fact(Skip = "not yet implemented")]
         public async Task NonAsyncTaskOfT()
         {
-            var markup = @"
-public class C
-{
-    Task<C> $$
-}
-";
+            var markup = """
+                public class C
+                {
+                    Task<C> $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "GetCAsync");
         }
 
         [Fact]
         public async Task MethodDeclaration1()
         {
-            var markup = @"
-public class C
-{
-    virtual C $$
-}
-";
+            var markup = """
+                public class C
+                {
+                    virtual C $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "GetC");
             await VerifyItemIsAbsentAsync(markup, "C");
             await VerifyItemIsAbsentAsync(markup, "c");
@@ -415,13 +417,13 @@ virtual C $$
         [Fact]
         public async Task WordBreaking1()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    CancellationToken $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    CancellationToken $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken");
             await VerifyItemExistsAsync(markup, "cancellation");
             await VerifyItemExistsAsync(markup, "token");
@@ -430,52 +432,52 @@ public class C
         [Fact]
         public async Task WordBreaking2()
         {
-            var markup = @"
-interface I {}
-public class C
-{
-    I $$
-}
-";
+            var markup = """
+                interface I {}
+                public class C
+                {
+                    I $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "GetI");
         }
 
         [Fact]
         public async Task WordBreaking3()
         {
-            var markup = @"
-interface II {}
-public class C
-{
-    II $$
-}
-";
+            var markup = """
+                interface II {}
+                public class C
+                {
+                    II $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "GetI");
         }
 
         [Fact]
         public async Task WordBreaking4()
         {
-            var markup = @"
-interface IGoo {}
-public class C
-{
-    IGoo $$
-}
-";
+            var markup = """
+                interface IGoo {}
+                public class C
+                {
+                    IGoo $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "Goo");
         }
 
         [Fact]
         public async Task WordBreaking5()
         {
-            var markup = @"
-class SomeWonderfullyLongClassName {}
-public class C
-{
-    SomeWonderfullyLongClassName $$
-}
-";
+            var markup = """
+                class SomeWonderfullyLongClassName {}
+                public class C
+                {
+                    SomeWonderfullyLongClassName $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "Some");
             await VerifyItemExistsAsync(markup, "SomeWonderfully");
             await VerifyItemExistsAsync(markup, "SomeWonderfullyLong");
@@ -490,117 +492,117 @@ public class C
         [Fact]
         public async Task Parameter1()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void Goo(CancellationToken $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void Goo(CancellationToken $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
 
         [Fact]
         public async Task Parameter2()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void Goo(int x, CancellationToken c$$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void Goo(int x, CancellationToken c$$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
 
         [Fact]
         public async Task Parameter3()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void Goo(CancellationToken c$$) {}
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void Goo(CancellationToken c$$) {}
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/45492")]
         public async Task Parameter4()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void Other(CancellationToken cancellationToken) {}
-    void Goo(CancellationToken c$$) {}
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void Other(CancellationToken cancellationToken) {}
+                    void Goo(CancellationToken c$$) {}
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
 
         [Fact]
         public async Task Parameter5()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void Goo(CancellationToken cancellationToken, CancellationToken c$$) {}
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void Goo(CancellationToken cancellationToken, CancellationToken c$$) {}
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken1", glyph: (int)Glyph.Parameter);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/45492")]
         public async Task Parameter6()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-void Other(CancellationToken cancellationToken) {}
-void Goo(CancellationToken c$$) {}
-";
+                void Other(CancellationToken cancellationToken) {}
+                void Goo(CancellationToken c$$) {}
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
 
         [Fact]
         public async Task Parameter7()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-void Goo(CancellationToken cancellationToken, CancellationToken c$$) {}
-";
+                void Goo(CancellationToken cancellationToken, CancellationToken c$$) {}
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken1", glyph: (int)Glyph.Parameter);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/45492")]
         public async Task Parameter8()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    int this[CancellationToken cancellationToken] => throw null;
-    int this[CancellationToken c$$] => throw null;
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    int this[CancellationToken cancellationToken] => throw null;
+                    int this[CancellationToken c$$] => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/45492")]
         public async Task Parameter9()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    int this[CancellationToken cancellationToken] => throw null;
-    int this[CancellationToken cancellationToken, CancellationToken c$$] => throw null;
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    int this[CancellationToken cancellationToken] => throw null;
+                    int this[CancellationToken cancellationToken, CancellationToken c$$] => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken1", glyph: (int)Glyph.Parameter);
         }
 
@@ -611,15 +613,15 @@ public class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/45492")]
         public async Task Parameter10(LanguageVersion languageVersion)
         {
-            var source = @"
-public class DbContext { }
-public class C
-{
-    void Goo(DbContext context) {
-        void InnerGoo(DbContext $$) { }
-    }
-}
-";
+            var source = """
+                public class DbContext { }
+                public class C
+                {
+                    void Goo(DbContext context) {
+                        void InnerGoo(DbContext $$) { }
+                    }
+                }
+                """;
             var markup = GetMarkup(source, languageVersion);
             await VerifyItemExistsAsync(markup, "dbContext", glyph: (int)Glyph.Parameter);
             await VerifyItemExistsAsync(markup, "db", glyph: (int)Glyph.Parameter);
@@ -641,16 +643,16 @@ void InnerGoo(DbContext $$) { }
         [WorkItem("https://github.com/dotnet/roslyn/issues/45492")]
         public async Task Parameter11(LanguageVersion languageVersion)
         {
-            var source = @"
-public class DbContext { }
-public class C
-{
-    void Goo() {
-        DbContext context;
-        void InnerGoo(DbContext $$) { }
-    }
-}
-";
+            var source = """
+                public class DbContext { }
+                public class C
+                {
+                    void Goo() {
+                        DbContext context;
+                        void InnerGoo(DbContext $$) { }
+                    }
+                }
+                """;
             var markup = GetMarkup(source, languageVersion);
             await VerifyItemExistsAsync(markup, "dbContext", glyph: (int)Glyph.Parameter);
             await VerifyItemExistsAsync(markup, "db", glyph: (int)Glyph.Parameter);
@@ -672,16 +674,16 @@ void InnerGoo(DbContext $$) { }
         [WorkItem("https://github.com/dotnet/roslyn/issues/45492")]
         public async Task Parameter12(LanguageVersion languageVersion)
         {
-            var source = @"
-public class DbContext { }
-public class C
-{
-    DbContext dbContext;
-    void Goo(DbContext context) {
-        void InnerGoo(DbContext $$) { }
-    }
-}
-";
+            var source = """
+                public class DbContext { }
+                public class C
+                {
+                    DbContext dbContext;
+                    void Goo(DbContext context) {
+                        void InnerGoo(DbContext $$) { }
+                    }
+                }
+                """;
             var markup = GetMarkup(source, languageVersion);
             await VerifyItemExistsAsync(markup, "dbContext", glyph: (int)Glyph.Parameter);
             await VerifyItemExistsAsync(markup, "db", glyph: (int)Glyph.Parameter);
@@ -708,13 +710,13 @@ public async Task Parameter13()
                 NamingStyleFallbackOptions = ParameterCamelCaseWithPascalCaseFallback()
             };
 
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void Goo(CancellationToken $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void Goo(CancellationToken $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter, options: options);
             await VerifyItemIsAbsentAsync(markup, "CancellationToken", options: options);
         }
@@ -722,15 +724,15 @@ void Goo(CancellationToken $$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52534")]
         public async Task SuggestParameterNamesFromExistingOverloads()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void M(CancellationToken myTok) { }
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void M(CancellationToken myTok) { }
 
-    void M(CancellationToken $$
-}
-";
+                    void M(CancellationToken $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myTok", glyph: (int)Glyph.Parameter);
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
@@ -738,15 +740,15 @@ void M(CancellationToken $$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52534")]
         public async Task SuggestParameterNamesFromExistingOverloads_Constructor()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    public C(string firstName, string middleName, string lastName) { }
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    public C(string firstName, string middleName, string lastName) { }
 
-    public C(string firstName, string $$)
-}
-";
+                    public C(string firstName, string $$)
+                }
+                """;
             await VerifyItemExistsAsync(markup, "middleName", glyph: (int)Glyph.Parameter);
             await VerifyItemExistsAsync(markup, "lastName", glyph: (int)Glyph.Parameter);
             await VerifyItemIsAbsentAsync(markup, "firstName");
@@ -755,27 +757,27 @@ public C(string firstName, string $$)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52534")]
         public async Task DoNotSuggestParameterNamesFromTheSameOverload()
         {
-            var markup = @"
-public class C
-{
-    void M(string name, string $$) { }
-}
-";
+            var markup = """
+                public class C
+                {
+                    void M(string name, string $$) { }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "name");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52534")]
         public async Task DoNotSuggestParameterNamesFromNonOverloads()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    void M1(CancellationToken myTok) { }
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    void M1(CancellationToken myTok) { }
 
-    void M2(CancellationToken $$
-}
-";
+                    void M2(CancellationToken $$
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "myTok");
             await VerifyItemExistsAsync(markup, "cancellationToken", glyph: (int)Glyph.Parameter);
         }
@@ -783,44 +785,44 @@ void M2(CancellationToken $$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52534")]
         public async Task DoNotSuggestInGenericType()
         {
-            var markup = @"
-using System.Collections.Generic;
-public class C
-{
-    void M(IEnumerable<int> numbers) { }
+            var markup = """
+                using System.Collections.Generic;
+                public class C
+                {
+                    void M(IEnumerable<int> numbers) { }
 
-    void M(List<$$>) { }
-}
-";
+                    void M(List<$$>) { }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52534")]
         public async Task DoNotSuggestInOptionalParameterDefaultValue()
         {
-            var markup = @"
-using System.Collections.Generic;
-public class C
-{
-    private const int ZERO = 0;
-    void M(int num = ZERO) { }
+            var markup = """
+                using System.Collections.Generic;
+                public class C
+                {
+                    private const int ZERO = 0;
+                    void M(int num = ZERO) { }
 
-    void M(int x, int num = $$) { }
-}
-";
+                    void M(int x, int num = $$) { }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19260")]
         public async Task EscapeKeywords1()
         {
-            var markup = @"
-using System.Text;
-public class C
-{
-    void Goo(StringBuilder $$) {}
-}
-";
+            var markup = """
+                using System.Text;
+                public class C
+                {
+                    void Goo(StringBuilder $$) {}
+                }
+                """;
             await VerifyItemExistsAsync(markup, "stringBuilder", glyph: (int)Glyph.Parameter);
             await VerifyItemExistsAsync(markup, "@string", glyph: (int)Glyph.Parameter);
             await VerifyItemExistsAsync(markup, "builder", glyph: (int)Glyph.Parameter);
@@ -829,45 +831,45 @@ void Goo(StringBuilder $$) {}
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19260")]
         public async Task EscapeKeywords2()
         {
-            var markup = @"
-class For { }
-public class C
-{
-    void Goo(For $$) {}
-}
-";
+            var markup = """
+                class For { }
+                public class C
+                {
+                    void Goo(For $$) {}
+                }
+                """;
             await VerifyItemExistsAsync(markup, "@for", glyph: (int)Glyph.Parameter);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19260")]
         public async Task EscapeKeywords3()
         {
-            var markup = @"
-class For { }
-public class C
-{
-    void goo()
-    {
-        For $$
-    }
-}
-";
+            var markup = """
+                class For { }
+                public class C
+                {
+                    void goo()
+                    {
+                        For $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "@for");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19260")]
         public async Task EscapeKeywords4()
         {
-            var markup = @"
-using System.Text;
-public class C
-{
-    void goo()
-    {
-        StringBuilder $$
-    }
-}
-";
+            var markup = """
+                using System.Text;
+                public class C
+                {
+                    void goo()
+                    {
+                        StringBuilder $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "stringBuilder");
             await VerifyItemExistsAsync(markup, "@string");
             await VerifyItemExistsAsync(markup, "builder");
@@ -876,17 +878,17 @@ void goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25214")]
         public async Task TypeImplementsLazyOfType1()
         {
-            var markup = @"
-using System;
-using System.Collections.Generic;
+            var markup = """
+                using System;
+                using System.Collections.Generic;
 
-internal class Example
-{
-    public Lazy<Item> $$
-}
+                internal class Example
+                {
+                    public Lazy<Item> $$
+                }
 
-public class Item { }
-";
+                public class Item { }
+                """;
             await VerifyItemExistsAsync(markup, "item");
             await VerifyItemExistsAsync(markup, "Item");
             await VerifyItemExistsAsync(markup, "GetItem");
@@ -895,17 +897,17 @@ public class Item { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25214")]
         public async Task TypeImplementsLazyOfType2()
         {
-            var markup = @"
-using System;
-using System.Collections.Generic;
+            var markup = """
+                using System;
+                using System.Collections.Generic;
 
-internal class Example
-{
-    public List<Lazy<Item>> $$
-}
+                internal class Example
+                {
+                    public List<Lazy<Item>> $$
+                }
 
-public class Item { }
-";
+                public class Item { }
+                """;
             await VerifyItemExistsAsync(markup, "items");
             await VerifyItemExistsAsync(markup, "Items");
             await VerifyItemExistsAsync(markup, "GetItems");
@@ -914,180 +916,180 @@ public class Item { }
         [Fact]
         public async Task NoSuggestionsForInt()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    int $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    int $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForLong()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    long $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    long $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForDouble()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    double $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    double $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForFloat()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    float $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    float $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForSbyte()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    sbyte $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    sbyte $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForShort()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    short $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    short $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForUint()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    uint $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    uint $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForUlong()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    ulong $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    ulong $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task SuggestionsForUShort()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    ushort $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    ushort $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForBool()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    bool $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    bool $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForByte()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    byte $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    byte $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForChar()
         {
-            var markup = @"
-using System.Threading;
-public class C
-{
-    char $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class C
+                {
+                    char $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSuggestionsForString()
         {
-            var markup = @"
-public class C
-{
-    string $$
-}
-";
+            var markup = """
+                public class C
+                {
+                    string $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NoSingleLetterClassNameSuggested()
         {
-            var markup = @"
-public class C
-{
-    C $$
-}
-";
+            var markup = """
+                public class C
+                {
+                    C $$
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "C");
             await VerifyItemIsAbsentAsync(markup, "c");
         }
@@ -1095,13 +1097,13 @@ public class C
         [Fact]
         public async Task ArrayElementTypeSuggested()
         {
-            var markup = @"
-using System.Threading;
-public class MyClass
-{
-    MyClass[] $$
-}
-";
+            var markup = """
+                using System.Threading;
+                public class MyClass
+                {
+                    MyClass[] $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "MyClasses");
             await VerifyItemIsAbsentAsync(markup, "Array");
         }
@@ -1109,63 +1111,63 @@ public class MyClass
         [Fact]
         public async Task NotTriggeredByVar()
         {
-            var markup = @"
-public class C
-{
-    var $$
-}
-";
+            var markup = """
+                public class C
+                {
+                    var $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task NotAfterVoid()
         {
-            var markup = @"
-public class C
-{
-    void $$
-}
-";
+            var markup = """
+                public class C
+                {
+                    void $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task AfterGeneric()
         {
-            var markup = @"
-public class C
-{
-    System.Collections.Generic.IEnumerable<C> $$
-}
-";
+            var markup = """
+                public class C
+                {
+                    System.Collections.Generic.IEnumerable<C> $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "GetCs");
         }
 
         [Fact]
         public async Task NothingAfterVar()
         {
-            var markup = @"
-public class C
-{
-    void goo()
-    {
-        var $$
-    }
-}
-";
+            var markup = """
+                public class C
+                {
+                    void goo()
+                    {
+                        var $$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task TestCorrectOrder()
         {
-            var markup = @"
-public class MyClass
-{
-    MyClass $$
-}
-";
+            var markup = """
+                public class MyClass
+                {
+                    MyClass $$
+                }
+                """;
             var items = await GetCompletionItemsAsync(markup, SourceCodeKind.Regular);
             Assert.Equal(
                 new[] { "myClass", "my", "@class", "MyClass", "My", "Class", "GetMyClass", "GetMy", "GetClass" },
@@ -1175,12 +1177,12 @@ public class MyClass
         [Fact]
         public async Task TestDescriptionInsideClass()
         {
-            var markup = @"
-public class MyClass
-{
-    MyClass $$
-}
-";
+            var markup = """
+                public class MyClass
+                {
+                    MyClass $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myClass", glyph: (int)Glyph.FieldPublic, expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
             await VerifyItemExistsAsync(markup, "MyClass", glyph: (int)Glyph.PropertyPublic, expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
             await VerifyItemExistsAsync(markup, "GetMyClass", glyph: (int)Glyph.MethodPublic, expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
@@ -1189,15 +1191,15 @@ public class MyClass
         [Fact]
         public async Task TestDescriptionInsideMethod()
         {
-            var markup = @"
-public class MyClass
-{
-    void M()
-    {
-        MyClass $$
-    }
-}
-";
+            var markup = """
+                public class MyClass
+                {
+                    void M()
+                    {
+                        MyClass $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myClass", glyph: (int)Glyph.Local, expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
             await VerifyItemIsAbsentAsync(markup, "MyClass");
             await VerifyItemIsAbsentAsync(markup, "GetMyClass");
@@ -1206,13 +1208,13 @@ void M()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20273")]
         public async Task Alias1()
         {
-            var markup = @"
-using MyType = System.String;
-public class C
-{
-    MyType $$
-}
-";
+            var markup = """
+                using MyType = System.String;
+                public class C
+                {
+                    MyType $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "my");
             await VerifyItemExistsAsync(markup, "type");
             await VerifyItemExistsAsync(markup, "myType");
@@ -1220,13 +1222,13 @@ public class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20273")]
         public async Task AliasWithInterfacePattern()
         {
-            var markup = @"
-using IMyType = System.String;
-public class C
-{
-    MyType $$
-}
-";
+            var markup = """
+                using IMyType = System.String;
+                public class C
+                {
+                    MyType $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "my");
             await VerifyItemExistsAsync(markup, "type");
             await VerifyItemExistsAsync(markup, "myType");
@@ -1235,233 +1237,233 @@ public class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20016")]
         public async Task NotAfterExistingName1()
         {
-            var markup = @"
-using IMyType = System.String;
-public class C
-{
-    MyType myType $$
-}
-";
+            var markup = """
+                using IMyType = System.String;
+                public class C
+                {
+                    MyType myType $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20016")]
         public async Task NotAfterExistingName2()
         {
-            var markup = @"
-using IMyType = System.String;
-public class C
-{
-    MyType myType, MyType $$
-}
-";
+            var markup = """
+                using IMyType = System.String;
+                public class C
+                {
+                    MyType myType, MyType $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19409")]
         public async Task OutVarArgument()
         {
-            var markup = @"
-class Test
-{
-    void Do(out Test goo)
-    {
-        Do(out var $$
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do(out Test goo)
+                    {
+                        Do(out var $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "test");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19409")]
         public async Task OutArgument()
         {
-            var markup = @"
-class Test
-{
-    void Do(out Test goo)
-    {
-        Do(out Test $$
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do(out Test goo)
+                    {
+                        Do(out Test $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "test");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19409")]
         public async Task OutGenericArgument()
         {
-            var markup = @"
-class Test
-{
-    void Do<T>(out T goo)
-    {
-        Do(out Test $$
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do<T>(out T goo)
+                    {
+                        Do(out Test $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "test");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleExpressionDeclaration1()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-        (System.Array array, System.Action $$ 
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                        (System.Array array, System.Action $$ 
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "action");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleExpressionDeclaration2()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-        (array, action $$
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                        (array, action $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "action");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleExpressionDeclaration_NestedTuples()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-        ((int i1, int i2), (System.Array array, System.Action $$
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                        ((int i1, int i2), (System.Array array, System.Action $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "action");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleExpressionDeclaration_NestedTuples_CompletionInTheMiddle()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-        ((System.Array array, System.Action $$), (int i1, int i2))
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                        ((System.Array array, System.Action $$), (int i1, int i2))
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "action");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementDefinition1()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-        (System.Array $$
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                        (System.Array $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "array");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementDefinition2()
         {
-            var markup = @"
-class Test
-{
-    (System.Array $$) Test() => default;
-}
-";
+            var markup = """
+                class Test
+                {
+                    (System.Array $$) Test() => default;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "array");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementDefinition3()
         {
-            var markup = @"
-class Test
-{
-    (System.Array array, System.Action $$) Test() => default;
-}
-";
+            var markup = """
+                class Test
+                {
+                    (System.Array array, System.Action $$) Test() => default;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "action");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementDefinition4()
         {
-            var markup = @"
-class Test
-{
-    (System.Array $$
-}
-";
+            var markup = """
+                class Test
+                {
+                    (System.Array $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "array");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementDefinition5()
         {
-            var markup = @"
-class Test
-{
-    void M((System.Array $$
-}
-";
+            var markup = """
+                class Test
+                {
+                    void M((System.Array $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "array");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementDefinition_NestedTuples()
         {
-            var markup = @"
-class Test
-{
-    void M(((int, int), (int, System.Array $$
-}
-";
+            var markup = """
+                class Test
+                {
+                    void M(((int, int), (int, System.Array $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "array");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementDefinition_InMiddleOfTuple()
         {
-            var markup = @"
-class Test
-{
-    void M((int, System.Array $$),int)
-}
-";
+            var markup = """
+                class Test
+                {
+                    void M((int, System.Array $$),int)
+                }
+                """;
             await VerifyItemExistsAsync(markup, "array");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementTypeInference()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-        (var accessViolationException, var $$) = (new AccessViolationException(), new Action(() => { }));
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                        (var accessViolationException, var $$) = (new AccessViolationException(), new Action(() => { }));
+                    }
+                }
+                """;
             // Currently not supported:
             await VerifyItemIsAbsentAsync(markup, "action");
             // see https://github.com/dotnet/roslyn/issues/27138
@@ -1473,71 +1475,71 @@ void Do()
         [WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementInGenericTypeArgument()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-        System.Func<(System.Action $$
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                        System.Func<(System.Action $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "action");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22342")]
         public async Task TupleElementInvocationInsideTuple()
         {
-            var markup = @"
-class Test
-{
-    void Do()
-    {
-            int M(int i1, int i2) => i1;
-            var t=(e1: 1, e2: M(1, $$));
-    }
-}
-";
+            var markup = """
+                class Test
+                {
+                    void Do()
+                    {
+                            int M(int i1, int i2) => i1;
+                            var t=(e1: 1, e2: M(1, $$));
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17987")]
         public async Task Pluralize1()
         {
-            var markup = @"
-using System.Collections.Generic;
-class Index
-{
-    IEnumerable<Index> $$
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class Index
+                {
+                    IEnumerable<Index> $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "Indices");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17987")]
         public async Task Pluralize2()
         {
-            var markup = @"
-using System.Collections.Generic;
-class Test
-{
-    IEnumerable<IEnumerable<Test>> $$
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class Test
+                {
+                    IEnumerable<IEnumerable<Test>> $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "tests");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17987")]
         public async Task Pluralize3()
         {
-            var markup = @"
-using System.Collections.Generic;
-using System.Threading;
-class Test
-{
-    IEnumerable<CancellationToken> $$
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                using System.Threading;
+                class Test
+                {
+                    IEnumerable<CancellationToken> $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationTokens");
             await VerifyItemExistsAsync(markup, "cancellations");
             await VerifyItemExistsAsync(markup, "tokens");
@@ -1546,14 +1548,14 @@ class Test
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17987")]
         public async Task PluralizeList()
         {
-            var markup = @"
-using System.Collections.Generic;
-using System.Threading;
-class Test
-{
-    List<CancellationToken> $$
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                using System.Threading;
+                class Test
+                {
+                    List<CancellationToken> $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationTokens");
             await VerifyItemExistsAsync(markup, "cancellations");
             await VerifyItemExistsAsync(markup, "tokens");
@@ -1562,14 +1564,14 @@ class Test
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17987")]
         public async Task PluralizeArray()
         {
-            var markup = @"
-using System.Collections.Generic;
-using System.Threading;
-class Test
-{
-    CancellationToken[] $$
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                using System.Threading;
+                class Test
+                {
+                    CancellationToken[] $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationTokens");
             await VerifyItemExistsAsync(markup, "cancellations");
             await VerifyItemExistsAsync(markup, "tokens");
@@ -1578,128 +1580,128 @@ class Test
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37366")]
         public async Task PluralizeSpan()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-class Test
-{
-    void M(Span<Test> $$) { }
-}
-" + Span;
+                class Test
+                {
+                    void M(Span<Test> $$) { }
+                }
+                """ + Span;
             await VerifyItemExistsAsync(markup, "tests");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37366")]
         public async Task PluralizeValidGetEnumerator()
         {
-            var markup = @"
-class MyClass
-{
-    public void M(MyOwnCollection<MyClass> $$) { }
-}
+            var markup = """
+                class MyClass
+                {
+                    public void M(MyOwnCollection<MyClass> $$) { }
+                }
 
 
-class MyOwnCollection<T>
-{
-    public MyEnumerator GetEnumerator()
-    {
-        return new MyEnumerator();
-    }
+                class MyOwnCollection<T>
+                {
+                    public MyEnumerator GetEnumerator()
+                    {
+                        return new MyEnumerator();
+                    }
 
-    public class MyEnumerator
-    {
-        public T Current { get; }
-        
-        public bool MoveNext() { return false; }
-    }
-}
-";
+                    public class MyEnumerator
+                    {
+                        public T Current { get; }
+
+                        public bool MoveNext() { return false; }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myClasses");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37366")]
         public async Task PluralizeValidGetAsyncEnumerator()
         {
-            var markup = @"
-using System.Threading.Tasks;
+            var markup = """
+                using System.Threading.Tasks;
 
-class MyClass
-{
-    public void M(MyOwnCollection<MyClass> $$) { }
-}
+                class MyClass
+                {
+                    public void M(MyOwnCollection<MyClass> $$) { }
+                }
 
 
-class MyOwnCollection<T>
-{
-    public MyEnumerator GetAsyncEnumerator()
-    {
-        return new MyEnumerator();
-    }
+                class MyOwnCollection<T>
+                {
+                    public MyEnumerator GetAsyncEnumerator()
+                    {
+                        return new MyEnumerator();
+                    }
 
-    public class MyEnumerator
-    {
-        public T Current { get; }
-        
-        public Task<bool> MoveNextAsync() { return Task.FromResult(false); }
-    }
-}
-";
+                    public class MyEnumerator
+                    {
+                        public T Current { get; }
+
+                        public Task<bool> MoveNextAsync() { return Task.FromResult(false); }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myClasses");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37366")]
         public async Task PluralizeForUnimplementedIEnumerable()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-class MyClass
-{
-    public void M(MyOwnCollection<MyClass> $$) { }
-}
+                class MyClass
+                {
+                    public void M(MyOwnCollection<MyClass> $$) { }
+                }
 
 
-class MyOwnCollection<T> : IEnumerable<T>
-{
-}
-";
+                class MyOwnCollection<T> : IEnumerable<T>
+                {
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myClasses");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37366")]
         public async Task PluralizeForUnimplementedIAsyncEnumerable()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-class MyClass
-{
-    public void M(MyOwnCollection<MyClass> $$) { }
-}
+                class MyClass
+                {
+                    public void M(MyOwnCollection<MyClass> $$) { }
+                }
 
 
-class MyOwnCollection<T> : IAsyncEnumerable<T>
-{
-}
-" + IAsyncEnumerable;
+                class MyOwnCollection<T> : IAsyncEnumerable<T>
+                {
+                }
+                """ + IAsyncEnumerable;
             await VerifyItemExistsAsync(markup, "myClasses");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23497")]
         public async Task InPatternMatching1()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-public class C
-{
-    public static void Main()
-    {
-        object obj = null;
-        if (obj is CancellationToken $$) { }
-    }
-}
-";
+                public class C
+                {
+                    public static void Main()
+                    {
+                        object obj = null;
+                        if (obj is CancellationToken $$) { }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken");
             await VerifyItemExistsAsync(markup, "cancellation");
             await VerifyItemExistsAsync(markup, "token");
@@ -1708,18 +1710,18 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23497")]
         public async Task InPatternMatching2()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-public class C
-{
-    public static bool Foo()
-    {
-        object obj = null;
-        return obj is CancellationToken $$
-    }
-}
-";
+                public class C
+                {
+                    public static bool Foo()
+                    {
+                        object obj = null;
+                        return obj is CancellationToken $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken");
             await VerifyItemExistsAsync(markup, "cancellation");
             await VerifyItemExistsAsync(markup, "token");
@@ -1728,21 +1730,21 @@ public static bool Foo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23497")]
         public async Task InPatternMatching3()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-public class C
-{
-    public static void Main()
-    {
-        object obj = null;
-        switch(obj)
-        {
-            case CancellationToken $$
-        }
-    }
-}
-";
+                public class C
+                {
+                    public static void Main()
+                    {
+                        object obj = null;
+                        switch(obj)
+                        {
+                            case CancellationToken $$
+                        }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken");
             await VerifyItemExistsAsync(markup, "cancellation");
             await VerifyItemExistsAsync(markup, "token");
@@ -1751,18 +1753,18 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23497")]
         public async Task InPatternMatching4()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-public class C
-{
-    public static void Main()
-    {
-        object obj = null;
-        if (obj is CancellationToken ca$$) { }
-    }
-}
-";
+                public class C
+                {
+                    public static void Main()
+                    {
+                        object obj = null;
+                        if (obj is CancellationToken ca$$) { }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken");
             await VerifyItemExistsAsync(markup, "cancellation");
         }
@@ -1770,18 +1772,18 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23497")]
         public async Task InPatternMatching5()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-public class C
-{
-    public static bool Foo()
-    {
-        object obj = null;
-        return obj is CancellationToken to$$
-    }
-}
-";
+                public class C
+                {
+                    public static bool Foo()
+                    {
+                        object obj = null;
+                        return obj is CancellationToken to$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken");
             await VerifyItemExistsAsync(markup, "token");
         }
@@ -1789,21 +1791,21 @@ public static bool Foo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23497")]
         public async Task InPatternMatching6()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-public class C
-{
-    public static void Main()
-    {
-        object obj = null;
-        switch(obj)
-        {
-            case CancellationToken to$$
-        }
-    }
-}
-";
+                public class C
+                {
+                    public static void Main()
+                    {
+                        object obj = null;
+                        switch(obj)
+                        {
+                            case CancellationToken to$$
+                        }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "cancellationToken");
             await VerifyItemExistsAsync(markup, "token");
         }
@@ -1811,136 +1813,136 @@ public static void Main()
         [Fact]
         public async Task InUsingStatement1()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        using (StreamReader s$$
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        using (StreamReader s$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "streamReader");
         }
 
         [Fact]
         public async Task InUsingStatement2()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        using (StreamReader s1, $$
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        using (StreamReader s1, $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "streamReader");
         }
 
         [Fact]
         public async Task InUsingStatement_Var()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        using (var m$$ = new MemoryStream())
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        using (var m$$ = new MemoryStream())
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "memoryStream");
         }
 
         [Fact]
         public async Task InForStatement1()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        for (StreamReader s$$
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        for (StreamReader s$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "streamReader");
         }
 
         [Fact]
         public async Task InForStatement2()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        for (StreamReader s1, $$
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        for (StreamReader s1, $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "streamReader");
         }
 
         [Fact]
         public async Task InForStatement_Var()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        for (var m$$ = new MemoryStream();
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        for (var m$$ = new MemoryStream();
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "memoryStream");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/26021")]
         public async Task InForEachStatement()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        foreach (StreamReader $$
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        foreach (StreamReader $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "streamReader");
         }
 
         [Fact]
         public async Task InForEachStatement_Var()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        foreach (var m$$ in new[] { new MemoryStream() })
-    }
-}
-";
+                class C
+                {
+                    void M()
+                    {
+                        foreach (var m$$ in new[] { new MemoryStream() })
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "memoryStream");
         }
 
@@ -1949,173 +1951,173 @@ public async Task DisabledByOption()
         {
             ShowNameSuggestions = false;
 
-            var markup = @"
-class Test
-{
-    Test $$
-}
-";
+            var markup = """
+                class Test
+                {
+                    Test $$
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeImplementsIEnumerableOfType()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method()
-  {
-    Container $$
-  }
-}
+                public class Class1
+                {
+                  public void Method()
+                  {
+                    Container $$
+                  }
+                }
 
-public class Container : ContainerBase { }
-public class ContainerBase : IEnumerable<ContainerBase> { }
-";
+                public class Container : ContainerBase { }
+                public class ContainerBase : IEnumerable<ContainerBase> { }
+                """;
             await VerifyItemExistsAsync(markup, "container");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeImplementsIEnumerableOfType2()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method()
-  {
-     Container $$
-  }
-}
+                public class Class1
+                {
+                  public void Method()
+                  {
+                     Container $$
+                  }
+                }
 
-public class ContainerBase : IEnumerable<Container> { }
-public class Container : ContainerBase { }
-";
+                public class ContainerBase : IEnumerable<Container> { }
+                public class Container : ContainerBase { }
+                """;
             await VerifyItemExistsAsync(markup, "container");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeImplementsIEnumerableOfType3()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method()
-  {
-     Container $$
-  }
-}
+                public class Class1
+                {
+                  public void Method()
+                  {
+                     Container $$
+                  }
+                }
 
-public class Container : IEnumerable<Container> { }
-";
+                public class Container : IEnumerable<Container> { }
+                """;
             await VerifyItemExistsAsync(markup, "container");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeImplementsIEnumerableOfType4()
         {
-            var markup = @"
-using System.Collections.Generic;
-using System.Threading.Tasks;
+            var markup = """
+                using System.Collections.Generic;
+                using System.Threading.Tasks;
 
-public class Class1
-{
-  public void Method()
-  {
-     TaskType $$
-  }
-}
+                public class Class1
+                {
+                  public void Method()
+                  {
+                     TaskType $$
+                  }
+                }
 
-public class ContainerBase : IEnumerable<Container> { }
-public class Container : ContainerBase { }
-public class TaskType : Task<Container> { }
-";
+                public class ContainerBase : IEnumerable<Container> { }
+                public class Container : ContainerBase { }
+                public class TaskType : Task<Container> { }
+                """;
             await VerifyItemExistsAsync(markup, "taskType");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeImplementsTaskOfType()
         {
-            var markup = @"
-using System.Threading.Tasks;
+            var markup = """
+                using System.Threading.Tasks;
 
-public class Class1
-{
-  public void Method()
-  {
-    Container $$
-  }
-}
+                public class Class1
+                {
+                  public void Method()
+                  {
+                    Container $$
+                  }
+                }
 
-public class Container : ContainerBase { }
-public class ContainerBase : Task<ContainerBase> { }
-";
+                public class Container : ContainerBase { }
+                public class ContainerBase : Task<ContainerBase> { }
+                """;
             await VerifyItemExistsAsync(markup, "container");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeImplementsTaskOfType2()
         {
-            var markup = @"
-using System.Threading.Tasks;
+            var markup = """
+                using System.Threading.Tasks;
 
-public class Class1
-{
-  public void Method()
-  {
-     Container $$
-  }
-}
+                public class Class1
+                {
+                  public void Method()
+                  {
+                     Container $$
+                  }
+                }
 
-public class Container : Task<ContainerBase> { }
-public class ContainerBase : Container { }
-";
+                public class Container : Task<ContainerBase> { }
+                public class ContainerBase : Container { }
+                """;
             await VerifyItemExistsAsync(markup, "container");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeImplementsTaskOfType3()
         {
-            var markup = @"
-using System.Collections.Generic;
-using System.Threading.Tasks;
+            var markup = """
+                using System.Collections.Generic;
+                using System.Threading.Tasks;
 
-public class Class1
-{
-  public void Method()
-  {
-    EnumerableType $$
-  }
-}
+                public class Class1
+                {
+                  public void Method()
+                  {
+                    EnumerableType $$
+                  }
+                }
 
-public class TaskType : TaskTypeBase { }
-public class TaskTypeBase : Task<TaskTypeBase> { }
-public class EnumerableType : IEnumerable<TaskType> { }
-";
+                public class TaskType : TaskTypeBase { }
+                public class TaskTypeBase : Task<TaskTypeBase> { }
+                public class EnumerableType : IEnumerable<TaskType> { }
+                """;
             await VerifyItemExistsAsync(markup, "taskTypes");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/23590")]
         public async Task TypeIsNullableOfNullable()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method()
-  {
-      // This code isn't legal, but we want to ensure we don't crash in this broken code scenario
-      IEnumerable<Nullable<int?>> $$
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method()
+                  {
+                      // This code isn't legal, but we want to ensure we don't crash in this broken code scenario
+                      IEnumerable<Nullable<int?>> $$
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "nullables");
         }
 
@@ -2123,19 +2125,19 @@ public void Method()
         [WorkItem("https://developercommunity2.visualstudio.com/t/Regression-from-1675-Suggested-varia/1220195")]
         public async Task TypeIsNullableStructInLocalWithNullableTypeName()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
+                public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
 
-public class Class1
-{
-  public void Method()
-  {
-      Nullable<ImmutableArray<int>> $$
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method()
+                  {
+                      Nullable<ImmutableArray<int>> $$
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ints");
         }
 
@@ -2143,19 +2145,19 @@ public void Method()
         [WorkItem("https://developercommunity2.visualstudio.com/t/Regression-from-1675-Suggested-varia/1220195")]
         public async Task TypeIsNullableStructInLocalWithQuestionMark()
         {
-            var markup = @"
-using System.Collections.Immutable;
+            var markup = """
+                using System.Collections.Immutable;
 
-public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
+                public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
 
-public class Class1
-{
-  public void Method()
-  {
-      ImmutableArray<int>? $$
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method()
+                  {
+                      ImmutableArray<int>? $$
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ints");
         }
 
@@ -2163,19 +2165,19 @@ public void Method()
         [WorkItem("https://developercommunity2.visualstudio.com/t/Regression-from-1675-Suggested-varia/1220195")]
         public async Task TypeIsNullableReferenceInLocal()
         {
-            var markup = @"
-#nullable enable
+            var markup = """
+                #nullable enable
 
-using System.Collections.Generic;
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method()
-  {
-      IEnumerable<int>? $$
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method()
+                  {
+                      IEnumerable<int>? $$
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ints");
         }
 
@@ -2183,18 +2185,18 @@ public void Method()
         [WorkItem("https://developercommunity2.visualstudio.com/t/Regression-from-1675-Suggested-varia/1220195")]
         public async Task TypeIsNullableStructInParameterWithNullableTypeName()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
+                public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
 
-public class Class1
-{
-  public void Method(Nullable<ImmutableArray<int>> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method(Nullable<ImmutableArray<int>> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ints");
         }
 
@@ -2202,16 +2204,16 @@ public void Method(Nullable<ImmutableArray<int>> $$)
         [WorkItem("https://developercommunity2.visualstudio.com/t/Regression-from-1675-Suggested-varia/1220195")]
         public async Task TypeIsNullableStructInParameterWithQuestionMark()
         {
-            var markup = @"
-public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
-
-public class Class1
-{
-  public void Method(ImmutableArray<int>? $$)
-  {
-  }
-}
-";
+            var markup = """
+                public struct ImmutableArray<T> : System.Collections.Generic.IEnumerable<T> { }
+
+                public class Class1
+                {
+                  public void Method(ImmutableArray<int>? $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ints");
         }
 
@@ -2219,130 +2221,130 @@ public void Method(ImmutableArray<int>? $$)
         [WorkItem("https://developercommunity2.visualstudio.com/t/Regression-from-1675-Suggested-varia/1220195")]
         public async Task TypeIsNullableReferenceInParameter()
         {
-            var markup = @"
-#nullable enable
+            var markup = """
+                #nullable enable
 
-using System.Collections.Generic;
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method(IEnumerable<int>? $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method(IEnumerable<int>? $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ints");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36364")]
         public async Task EnumerableParameterOfUnmanagedType()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method(IEnumerable<int> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method(IEnumerable<int> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ints");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36364")]
         public async Task EnumerableParameterOfObject()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method(IEnumerable<object> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method(IEnumerable<object> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "objects");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36364")]
         public async Task EnumerableParameterOfString()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method(IEnumerable<string> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method(IEnumerable<string> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "strings");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36364")]
         public async Task EnumerableGenericTParameter()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method<T>(IEnumerable<T> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method<T>(IEnumerable<T> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "values");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36364")]
         public async Task EnumerableGenericTNameParameter()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method<TResult>(IEnumerable<TResult> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method<TResult>(IEnumerable<TResult> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "results");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36364")]
         public async Task EnumerableGenericUnexpectedlyNamedParameter()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method<Arg>(IEnumerable<Arg> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method<Arg>(IEnumerable<Arg> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "args");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36364")]
         public async Task EnumerableGenericUnexpectedlyNamedParameterBeginsWithT()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-public class Class1
-{
-  public void Method<Type>(IEnumerable<Type> $$)
-  {
-  }
-}
-";
+                public class Class1
+                {
+                  public void Method<Type>(IEnumerable<Type> $$)
+                  {
+                  }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "types");
         }
 
@@ -2358,12 +2360,12 @@ public async Task CustomNamingStyleInsideClass()
                 NamingStyleFallbackOptions = NamesEndWithSuffixPreferences()
             };
 
-            var markup = @"
-class Configuration
-{
-    Configuration $$
-}
-";
+            var markup = """
+                class Configuration
+                {
+                    Configuration $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ConfigurationField", glyph: (int)Glyph.FieldPublic,
                 expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name, options: options);
             await VerifyItemExistsAsync(markup, "ConfigurationProperty", glyph: (int)Glyph.PropertyPublic,
@@ -2386,15 +2388,15 @@ public async Task CustomNamingStyleInsideMethod()
                 NamingStyleFallbackOptions = NamesEndWithSuffixPreferences()
             };
 
-            var markup = @"
-class Configuration
-{
-    void M()
-    {
-        Configuration $$
-    }
-}
-";
+            var markup = """
+                class Configuration
+                {
+                    void M()
+                    {
+                        Configuration $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ConfigurationLocal", glyph: (int)Glyph.Local,
                 expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name, options: options);
             await VerifyItemExistsAsync(markup, "ConfigurationLocalFunction", glyph: (int)Glyph.MethodPublic,
@@ -2407,22 +2409,22 @@ await VerifyItemExistsAsync(markup, "ConfigurationLocalFunction", glyph: (int)Gl
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionDoesNotUseForeachVariableName()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB {}
+            var markup = """
+                class ClassA
+                {
+                    class ClassB {}
 
-    readonly List<ClassB> classBList;
+                    readonly List<ClassB> classBList;
 
-    void M()
-    {
-        foreach (var classB in classBList)
-        {
-            ClassB $$
-        }
-    }
-}
-";
+                    void M()
+                    {
+                        foreach (var classB in classBList)
+                        {
+                            ClassB $$
+                        }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "classB");
             await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
@@ -2431,17 +2433,17 @@ await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionDoesNotUseParameterName()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
 
-    void M(ClassB classB)
-    {
-        ClassB $$
-    }
-}
-";
+                    void M(ClassB classB)
+                    {
+                        ClassB $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "classB");
             await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
@@ -2450,19 +2452,19 @@ await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionCanUsePropertyName()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
 
-    ClassB classB { get; set; }
+                    ClassB classB { get; set; }
 
-    void M()
-    {
-        ClassB $$
-    }
-}
-";
+                    void M()
+                    {
+                        ClassB $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2470,19 +2472,19 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionCanUseFieldName()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
 
-    ClassB classB;
+                    ClassB classB;
 
-    void M()
-    {
-        ClassB $$
-    }
-}
-";
+                    void M()
+                    {
+                        ClassB $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2490,18 +2492,18 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionDoesNotUseLocalName()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
 
-    void M()
-    {
-        ClassB classB = new ClassB();
-        ClassB $$
-    }
-}
-";
+                    void M()
+                    {
+                        ClassB classB = new ClassB();
+                        ClassB $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "classB");
             await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
@@ -2510,19 +2512,19 @@ await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionDoesNotUseLocalNameMultiple()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-
-    void M()
-    {
-        ClassB classB = new ClassB();
-        ClassB classB1 = new ClassB();
-        ClassB $$
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+
+                    void M()
+                    {
+                        ClassB classB = new ClassB();
+                        ClassB classB1 = new ClassB();
+                        ClassB $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "classB");
             await VerifyItemIsAbsentAsync(markup, "classB1");
             await VerifyItemExistsAsync(markup, "classB2", glyph: (int)Glyph.Local,
@@ -2532,21 +2534,21 @@ await VerifyItemExistsAsync(markup, "classB2", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionDoesNotUseLocalInsideIf()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-
-    void M(bool flag)
-    {
-        ClassB $$
-        if (flag)
-        {
-            ClassB classB = new ClassB();
-        }
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+
+                    void M(bool flag)
+                    {
+                        ClassB $$
+                        if (flag)
+                        {
+                            ClassB classB = new ClassB();
+                        }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "classB");
             await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
@@ -2555,15 +2557,15 @@ await VerifyItemExistsAsync(markup, "classB1", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionCanUseClassName()
         {
-            var markup = @"
-class classA
-{
-    void M()
-    {
-        classA $$
-    }
-}
-";
+            var markup = """
+                class classA
+                {
+                    void M()
+                    {
+                        classA $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classA", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2571,22 +2573,22 @@ await VerifyItemExistsAsync(markup, "classA", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/31304")]
         public async Task TestCompletionCanUseLocalInDifferentScope()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
 
-    void M()
-    {
-        ClassB classB = new ClassB(); 
-    }
+                    void M()
+                    {
+                        ClassB classB = new ClassB(); 
+                    }
 
-    void M2()
-    {
-        ClassB $$
-    }
-}
-";
+                    void M2()
+                    {
+                        ClassB $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2598,17 +2600,17 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
         [WorkItem("https://github.com/dotnet/roslyn/issues/42049")]
         public async Task TestUseLocalAsLocalFunctionParameter(LanguageVersion languageVersion)
         {
-            var source = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        ClassB classB = new ClassB();
-        void LocalM1(ClassB $$) { }
-    }
-}
-";
+            var source = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        ClassB classB = new ClassB();
+                        void LocalM1(ClassB $$) { }
+                    }
+                }
+                """;
             var markup = GetMarkup(source, languageVersion);
 
             if (languageVersion.MapSpecifiedToEffectiveVersion() >= LanguageVersion.CSharp8)
@@ -2629,20 +2631,20 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Parameter,
         [WorkItem("https://github.com/dotnet/roslyn/issues/42049")]
         public async Task TestCompletionDoesNotUseLocalAsLocalFunctionVariable(LanguageVersion languageVersion)
         {
-            var source = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        ClassB classB = new ClassB();
-        void LocalM1()
-        {
-            ClassB $$
-        }
-    }
-}
-";
+            var source = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        ClassB classB = new ClassB();
+                        void LocalM1()
+                        {
+                            ClassB $$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(source, languageVersion);
             await VerifyItemIsAbsentAsync(markup, "classB");
         }
@@ -2650,62 +2652,62 @@ void LocalM1()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35891")]
         public async Task TestCompletionDoesNotUseLocalInNestedLocalFunction()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        ClassB classB = new ClassB();
-        void LocalM1()
-        {
-            void LocalM2()
-            {
-                ClassB $$
-            }
-        }
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        ClassB classB = new ClassB();
+                        void LocalM1()
+                        {
+                            void LocalM2()
+                            {
+                                ClassB $$
+                            }
+                        }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "classB");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35891")]
         public async Task TestCompletionDoesNotUseLocalFunctionParameterInNestedLocalFunction()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        void LocalM1(ClassB classB)
-        {
-            void LocalM2()
-            {
-                ClassB $$
-            }
-        }
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        void LocalM1(ClassB classB)
+                        {
+                            void LocalM2()
+                            {
+                                ClassB $$
+                            }
+                        }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "classB");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35891")]
         public async Task TestCompletionCanUseLocalFunctionParameterAsParameter()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        void LocalM1(ClassB classB) { }
-        void LocalM2(ClassB $$) { }
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        void LocalM1(ClassB classB) { }
+                        void LocalM2(ClassB $$) { }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Parameter,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2713,20 +2715,20 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Parameter,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35891")]
         public async Task TestCompletionCanUseLocalFunctionVariableAsParameter()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        void LocalM1()
-        {
-            ClassB classB
-        }
-        void LocalM2(ClassB $$) { }
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        void LocalM1()
+                        {
+                            ClassB classB
+                        }
+                        void LocalM2(ClassB $$) { }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Parameter,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2734,20 +2736,20 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Parameter,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35891")]
         public async Task TestCompletionCanUseLocalFunctionParameterAsVariable()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        void LocalM1(ClassB classB) { }
-        void LocalM2()
-        {
-            ClassB $$
-        }
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        void LocalM1(ClassB classB) { }
+                        void LocalM2()
+                        {
+                            ClassB $$
+                        }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2755,23 +2757,23 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35891")]
         public async Task TestCompletionCanUseLocalFunctionVariableAsVariable()
         {
-            var markup = @"
-class ClassA
-{
-    class ClassB { }
-    void M()
-    {
-        void LocalM1()
-        {
-            ClassB classB
-        }
-        void LocalM2()
-        {
-            ClassB $$
-        }
-    }
-}
-";
+            var markup = """
+                class ClassA
+                {
+                    class ClassB { }
+                    void M()
+                    {
+                        void LocalM1()
+                        {
+                            ClassB classB
+                        }
+                        void LocalM2()
+                        {
+                            ClassB $$
+                        }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
                     expectedDescriptionOrNull: CSharpFeaturesResources.Suggested_name);
         }
@@ -2779,12 +2781,12 @@ await VerifyItemExistsAsync(markup, "classB", glyph: (int)Glyph.Local,
         [Fact]
         public async Task TestNotForUnboundAsync()
         {
-            var markup = @"
-class C
-{
-    async $$
-}
-";
+            var markup = """
+                class C
+                {
+                    async $$
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "async");
             await VerifyItemIsAbsentAsync(markup, "Async");
             await VerifyItemIsAbsentAsync(markup, "GetAsync");
@@ -2802,51 +2804,51 @@ public async Task ConflictingLocalVariable()
                 NamingStyleFallbackOptions = MultipleCamelCaseLocalRules()
             };
 
-            var markup = @"
-public class MyClass
-{
-    void M()
-    {
-        MyClass myClass;
-        MyClass $$
-    }
-}
-";
+            var markup = """
+                public class MyClass
+                {
+                    void M()
+                    {
+                        MyClass myClass;
+                        MyClass $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "myClass1", glyph: (int)Glyph.Local, options: options);
         }
 
         [Fact]
         public async Task TestNotForNonTypeSymbol()
         {
-            var markup = @"
-using System;
-class C
-{
-    Console.BackgroundColor $$
-}
-";
+            var markup = """
+                using System;
+                class C
+                {
+                    Console.BackgroundColor $$
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "consoleColor");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/29487")]
         public async Task TestForOutParam1()
         {
-            var markup = @"
-using System.Threading;
+            var markup = """
+                using System.Threading;
 
-class C
-{
-    void Main()
-    {
-        Goo(out var $$)
-    }
+                class C
+                {
+                    void Main()
+                    {
+                        Goo(out var $$)
+                    }
 
-    void Goo(out CancellationToken interestingName)
-    {
+                    void Goo(out CancellationToken interestingName)
+                    {
 
-    }
-}
-";
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "interestingName");
             await VerifyItemExistsAsync(markup, "cancellationToken");
         }
@@ -2854,63 +2856,63 @@ void Goo(out CancellationToken interestingName)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/43602")]
         public async Task TestForOutParam2()
         {
-            var markup = @"
-class C
-{
-    void Main()
-    {
-        int.TryParse("""", out var $$)
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void Main()
+                    {
+                        int.TryParse("", out var $$)
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "result");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/49791")]
         public async Task TestForErrorType1()
         {
-            var markup = @"
-class C
-{
-    void Main(string _rootPath)
-    {
-        _rootPath $$
-        _rootPath = null;
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void Main(string _rootPath)
+                    {
+                        _rootPath $$
+                        _rootPath = null;
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/49791")]
         public async Task TestForErrorType2()
         {
-            var markup = @"
-class C
-{
-    void Main()
-    {
-        Goo $$
-        Goo = null;
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void Main()
+                    {
+                        Goo $$
+                        Goo = null;
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "goo");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36352")]
         public async Task InferCollectionInErrorCase1()
         {
-            var markup = @"
-class Customer { }
+            var markup = """
+                class Customer { }
 
-class V
-{
-    void M(IEnumerable<Customer> $$)
-    {
-    }
-}
-";
+                class V
+                {
+                    void M(IEnumerable<Customer> $$)
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "customers");
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests_NameDeclarationInfoTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests_NameDeclarationInfoTests.cs
index f34a0f12648c6..ac0f2dd5803a3 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests_NameDeclarationInfoTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/DeclarationNameCompletionProviderTests_NameDeclarationInfoTests.cs
@@ -27,12 +27,12 @@ public class DeclarationNameCompletion_ContextTests
         [Fact]
         public async Task AfterTypeInClass1()
         {
-            var markup = @"
-class C
-{
-    int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Field),
                 new SymbolKindOrTypeKind(SymbolKind.Property),
@@ -45,12 +45,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task AfterTypeInClassWithAccessibility()
         {
-            var markup = @"
-class C
-{
-    public int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    public int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Field),
                 new SymbolKindOrTypeKind(SymbolKind.Property),
@@ -63,12 +63,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task AfterTypeInClassVirtual()
         {
-            var markup = @"
-class C
-{
-    public virtual int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    public virtual int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Property),
                 new SymbolKindOrTypeKind(MethodKind.Ordinary));
@@ -80,12 +80,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task AfterTypeInClassStatic()
         {
-            var markup = @"
-class C
-{
-    private static int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    private static int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Field),
                 new SymbolKindOrTypeKind(SymbolKind.Property),
@@ -98,12 +98,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task AfterTypeInClassConst()
         {
-            var markup = @"
-class C
-{
-    private const int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    private const int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Field));
             await VerifyModifiers(markup, new DeclarationModifiers(isConst: true));
@@ -114,15 +114,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task VariableDeclaration1()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        int $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        int $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local),
                 new SymbolKindOrTypeKind(MethodKind.LocalFunction));
@@ -134,15 +134,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task VariableDeclaration2()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        int c1, $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        int c1, $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -153,15 +153,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ReadonlyVariableDeclaration1()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        readonly int $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        readonly int $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local),
                 new SymbolKindOrTypeKind(MethodKind.LocalFunction));
@@ -173,15 +173,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ReadonlyVariableDeclaration2()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        readonly int c1, $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        readonly int c1, $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local));
             await VerifyModifiers(markup, new DeclarationModifiers(isReadOnly: true));
@@ -192,15 +192,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task UsingVariableDeclaration1()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        using (int i$$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        using (int i$$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -211,15 +211,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task UsingVariableDeclaration2()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        using (int i1, $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        using (int i1, $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -230,15 +230,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ForVariableDeclaration1()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        for (int i$$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        for (int i$$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -249,15 +249,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ForVariableDeclaration2()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        for (int i1, $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        for (int i1, $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -268,15 +268,15 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ForEachVariableDeclaration()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        foreach (int $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        foreach (int $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -287,13 +287,13 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task Parameter1()
         {
-            var markup = @"
-class C
-{
-    void goo(C $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo(C $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Parameter));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -304,13 +304,13 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task Parameter2()
         {
-            var markup = @"
-class C
-{
-    void goo(C c1, C $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo(C c1, C $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Parameter));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -321,13 +321,13 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ParameterAfterPredefinedType1()
         {
-            var markup = @"
-class C
-{
-    void goo(string $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo(string $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Parameter));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -338,13 +338,13 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ParameterAfterPredefinedType2()
         {
-            var markup = @"
-class C
-{
-    void goo(C c1, string $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void goo(C c1, string $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Parameter));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -355,14 +355,14 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ParameterAfterGeneric()
         {
-            var markup = @"
-using System.Collections.Generic;
-class C
-{
-    void goo(C c1, List<string> $$
-    }
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class C
+                {
+                    void goo(C c1, List<string> $$
+                    }
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Parameter));
             await VerifyModifiers(markup, new DeclarationModifiers());
@@ -373,11 +373,11 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ClassTypeParameter1()
         {
-            var markup = @"
-class C<$$
-{
-}
-";
+            var markup = """
+                class C<$$
+                {
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.TypeParameter));
         }
@@ -385,11 +385,11 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ClassTypeParameter2()
         {
-            var markup = @"
-class C<T1, $$
-{
-}
-";
+            var markup = """
+                class C<T1, $$
+                {
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.TypeParameter));
         }
@@ -397,12 +397,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ModifierExclusion1()
         {
-            var markup = @"
-class C
-{
-    readonly int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    readonly int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Field));
         }
@@ -410,12 +410,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ModifierExclusion2()
         {
-            var markup = @"
-class C
-{
-    const int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    const int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Field));
         }
@@ -423,12 +423,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ModifierExclusion3()
         {
-            var markup = @"
-class C
-{
-    abstract int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    abstract int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Property),
                 new SymbolKindOrTypeKind(MethodKind.Ordinary));
@@ -437,12 +437,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ModifierExclusion4()
         {
-            var markup = @"
-class C
-{
-    virtual int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    virtual int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Property),
                 new SymbolKindOrTypeKind(MethodKind.Ordinary));
@@ -451,12 +451,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ModifierExclusion5()
         {
-            var markup = @"
-class C
-{
-    sealed int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    sealed int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Property),
                 new SymbolKindOrTypeKind(MethodKind.Ordinary));
@@ -465,12 +465,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ModifierExclusion6()
         {
-            var markup = @"
-class C
-{
-    override int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    override int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Property),
                 new SymbolKindOrTypeKind(MethodKind.Ordinary));
@@ -479,12 +479,12 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task ModifierExclusion7()
         {
-            var markup = @"
-class C
-{
-    async int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    async int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(MethodKind.Ordinary));
         }
@@ -493,12 +493,12 @@ await VerifySymbolKinds(markup,
         public async Task ModifierExclusion8()
         {
             // Note that the async is not included in the incomplete member syntax
-            var markup = @"
-class C
-{
-    partial int $$
-}
-";
+            var markup = """
+                class C
+                {
+                    partial int $$
+                }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Field),
                 new SymbolKindOrTypeKind(SymbolKind.Property),
@@ -697,18 +697,18 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task LocalInsideMethod1()
         {
-            var markup = @"
-namespace ConsoleApp1
-{
-    class ReallyLongClassName { }
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            ReallyLongClassName $$
-        }
-    }
-";
+            var markup = """
+                namespace ConsoleApp1
+                {
+                    class ReallyLongClassName { }
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            ReallyLongClassName $$
+                        }
+                    }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local),
                 new SymbolKindOrTypeKind(MethodKind.LocalFunction));
@@ -717,18 +717,18 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task LocalInsideMethod2()
         {
-            var markup = @"
-namespace ConsoleApp1
-{
-    class ReallyLongClassName<T> { }
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            ReallyLongClassName<int> $$
-        }
-    }
-";
+            var markup = """
+                namespace ConsoleApp1
+                {
+                    class ReallyLongClassName<T> { }
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            ReallyLongClassName<int> $$
+                        }
+                    }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local),
                 new SymbolKindOrTypeKind(MethodKind.LocalFunction));
@@ -737,18 +737,18 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task LocalInsideMethodAfterPredefinedTypeKeyword()
         {
-            var markup = @"
-namespace ConsoleApp1
-{
-    class ReallyLongClassName { }
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            string $$
-        }
-    }
-";
+            var markup = """
+                namespace ConsoleApp1
+                {
+                    class ReallyLongClassName { }
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            string $$
+                        }
+                    }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local),
                 new SymbolKindOrTypeKind(MethodKind.LocalFunction));
@@ -757,17 +757,17 @@ await VerifySymbolKinds(markup,
         [Fact]
         public async Task LocalInsideMethodAfterArray()
         {
-            var markup = @"
-namespace ConsoleApp1
-{
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            string[] $$
-        }
-    }
-";
+            var markup = """
+                namespace ConsoleApp1
+                {
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            string[] $$
+                        }
+                    }
+                """;
             await VerifySymbolKinds(markup,
                 new SymbolKindOrTypeKind(SymbolKind.Local),
                 new SymbolKindOrTypeKind(MethodKind.LocalFunction));
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/EnumAndCompletionListTagCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/EnumAndCompletionListTagCompletionProviderTests.cs
index 9a9211cf09887..496a6493e631c 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/EnumAndCompletionListTagCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/EnumAndCompletionListTagCompletionProviderTests.cs
@@ -20,31 +20,32 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task NullableEnum()
         {
-            var markup = @"class Program
-{
-    static void Main(string[] args)
-    {
-        Colors? d = $$
-        Colors c = Colors.Blue;
-    }
-}
-";
-            var colors = @"
-enum Colors
-{
-    Red,
-    Blue,
-    Green,
-}
-";
-            var colorsLike = @"
-readonly struct Colors
-{
-    public static readonly Colors Red;
-    public static readonly Colors Blue;
-    public static readonly Colors Green;
-}
-";
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Colors? d = $$
+                        Colors c = Colors.Blue;
+                    }
+                }
+                """;
+            var colors = """
+                enum Colors
+                {
+                    Red,
+                    Blue,
+                    Green,
+                }
+                """;
+            var colorsLike = """
+                readonly struct Colors
+                {
+                    public static readonly Colors Red;
+                    public static readonly Colors Blue;
+                    public static readonly Colors Green;
+                }
+                """;
 
             await VerifyItemExistsAsync(markup + colors, "Colors");
             await VerifyItemIsAbsentAsync(markup + colorsLike, "Colors");
@@ -53,21 +54,22 @@ readonly struct Colors
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
         public async Task EditorBrowsable_EnumMemberAlways()
         {
-            var markup = @"
-class Program
-{
-    public void M()
-    {
-        Goo d = $$
-    }
-}
-";
-            var referencedCode = @"
-[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-public enum Goo
-{
-    Member
-}";
+            var markup = """
+                class Program
+                {
+                    public void M()
+                    {
+                        Goo d = $$
+                    }
+                }
+                """;
+            var referencedCode = """
+                [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                public enum Goo
+                {
+                    Member
+                }
+                """;
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
                 referencedCode: referencedCode,
@@ -81,21 +83,22 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
         public async Task EditorBrowsable_EnumMemberNever()
         {
-            var markup = @"
-class Program
-{
-    public void M()
-    {
-        Goo d = $$
-    }
-}
-";
-            var referencedCode = @"
-[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-public enum Goo
-{
-    Member
-}";
+            var markup = """
+                class Program
+                {
+                    public void M()
+                    {
+                        Goo d = $$
+                    }
+                }
+                """;
+            var referencedCode = """
+                [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                public enum Goo
+                {
+                    Member
+                }
+                """;
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
                 referencedCode: referencedCode,
@@ -109,21 +112,22 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
         public async Task EditorBrowsable_EnumMemberAdvanced()
         {
-            var markup = @"
-class Program
-{
-    public void M()
-    {
-        Goo d = $$
-    }
-}
-";
-            var referencedCode = @"
-[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-public enum Goo
-{
-    Member
-}";
+            var markup = """
+                class Program
+                {
+                    public void M()
+                    {
+                        Goo d = $$
+                    }
+                }
+                """;
+            var referencedCode = """
+                [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                public enum Goo
+                {
+                    Member
+                }
+                """;
             HideAdvancedMembers = true;
 
             await VerifyItemInEditorBrowsableContextsAsync(
@@ -150,29 +154,30 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/854099")]
         public async Task NotInComment()
         {
-            var markup = @"class Program
-{
-    static void Main(string[] args)
-    {
-        Colors c = // $$
-    }
-";
-            var colors = @"
-enum Colors
-{
-    Red,
-    Blue,
-    Green,
-}
-";
-            var colorsLike = @"
-readonly struct Colors
-{
-    public static readonly Colors Red;
-    public static readonly Colors Blue;
-    public static readonly Colors Green;
-}
-";
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Colors c = // $$
+                    }
+                """;
+            var colors = """
+                enum Colors
+                {
+                    Red,
+                    Blue,
+                    Green,
+                }
+                """;
+            var colorsLike = """
+                readonly struct Colors
+                {
+                    public static readonly Colors Red;
+                    public static readonly Colors Blue;
+                    public static readonly Colors Green;
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup + colors);
             await VerifyNoItemsExistAsync(markup + colorsLike);
@@ -471,21 +476,23 @@ class Program
         public async Task NoCompletionListTag()
         {
             var markup =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-class C
-{
-    
-}
+                class C
+                {
 
-class Program
-{
-    void Goo()
-    {
-        C c = $$
-    }
-}";
+                }
+
+                class Program
+                {
+                    void Goo()
+                    {
+                        C c = $$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -493,22 +500,24 @@ void Goo()
         public async Task CompletionList()
         {
             var markup =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-/// <completionlist cref=""C""/>
-class C
-{
-    
-}
+                /// <completionlist cref="C"/>
+                class C
+                {
 
-class Program
-{
-    void Goo()
-    {
-        C c = $$
-    }
-}";
+                }
+
+                class Program
+                {
+                    void Goo()
+                    {
+                        C c = $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "C");
         }
 
@@ -516,22 +525,24 @@ void Goo()
         public async Task CompletionListCrefToString()
         {
             var markup =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-/// <completionlist cref=""string""/>
-class C
-{
-    
-}
+                /// <completionlist cref="string"/>
+                class C
+                {
 
-class Program
-{
-    void Goo()
-    {
-        C c = $$
-    }
-}";
+                }
+
+                class Program
+                {
+                    void Goo()
+                    {
+                        C c = $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "string", glyph: (int)Glyph.ClassPublic);
         }
 
@@ -539,22 +550,24 @@ void Goo()
         public async Task CompletionListEmptyCref()
         {
             var markup =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-/// <completionlist cref=""""/>
-class C
-{
-    
-}
+                /// <completionlist cref=""/>
+                class C
+                {
 
-class Program
-{
-    void Goo()
-    {
-        C c = $$
-    }
-}";
+                }
+
+                class Program
+                {
+                    void Goo()
+                    {
+                        C c = $$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -562,24 +575,26 @@ void Goo()
         public async Task CompletionListInaccessibleType()
         {
             var markup =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-/// <completionlist cref=""C.Inner""/>
-class C
-{
-    private class Inner
-    {   
-    }
-}
+                /// <completionlist cref="C.Inner"/>
+                class C
+                {
+                    private class Inner
+                    {   
+                    }
+                }
 
-class Program
-{
-    void Goo()
-    {
-        C c = $$
-    }
-}";
+                class Program
+                {
+                    void Goo()
+                    {
+                        C c = $$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -587,24 +602,26 @@ void Goo()
         public async Task CompletionListNotAType()
         {
             var markup =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-/// <completionlist cref=""C.Z()""/>
-class C
-{
-    public void Z()
-    {   
-    }
-}
+                /// <completionlist cref="C.Z()"/>
+                class C
+                {
+                    public void Z()
+                    {   
+                    }
+                }
 
-class Program
-{
-    void Goo()
-    {
-        C c = $$
-    }
-}";
+                class Program
+                {
+                    void Goo()
+                    {
+                        C c = $$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -612,24 +629,25 @@ void Goo()
         public async Task CompletionListContainingMembers()
         {
             var markup =
-@"
-/// <completionlist cref=""TypeContainer"" />
- public class SomeType
- { }
-
- public static class TypeContainer
- {
-     public static SomeType Foo1 = new SomeType();
-     public static Program Foo2 = new Program();
- }
-
- class Program
- {
-     void Goo()
-     {
-         SomeType c = $$
-     }
- }";
+                """
+                /// <completionlist cref="TypeContainer" />
+                 public class SomeType
+                 { }
+
+                 public static class TypeContainer
+                 {
+                     public static SomeType Foo1 = new SomeType();
+                     public static Program Foo2 = new Program();
+                 }
+
+                 class Program
+                 {
+                     void Goo()
+                     {
+                         SomeType c = $$
+                     }
+                 }
+                """;
             await VerifyItemExistsAsync(markup, "TypeContainer");
             await VerifyItemExistsAsync(markup, "TypeContainer.Foo1");
             await VerifyItemExistsAsync(markup, "TypeContainer.Foo2");
@@ -715,27 +733,27 @@ static void Main(string[] args)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/828196")]
         public async Task NotInParameterNameContext()
         {
-            var enumE = @"
-enum E
-{
-    a
-}
-";
-            var enumLikeE = @"
-readonly struct E
-{
-    public static readonly E a;
-}
-";
-            var markup = @"
-class C
-{
-    void goo(E first, E second) 
-    {
-        goo(first: E.a, $$
-    }
-}
-";
+            var enumE = """
+                enum E
+                {
+                    a
+                }
+                """;
+            var enumLikeE = """
+                readonly struct E
+                {
+                    public static readonly E a;
+                }
+                """;
+            var markup = """
+                class C
+                {
+                    void goo(E first, E second) 
+                    {
+                        goo(first: E.a, $$
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(enumE + markup, "E");
 
@@ -746,57 +764,59 @@ void goo(E first, E second)
         public async Task InExpressionBodiedProperty()
         {
             var markup =
-@"class C
-{
-    Colors Colors => $$
-}
-";
-            var colors = @"
-enum Colors
-{
-    Red,
-    Blue,
-    Green,
-}
-";
-            var colorsLike = @"
-readonly struct Colors
-{
-    public static readonly Colors Red;
-    public static readonly Colors Blue;
-    public static readonly Colors Green;
-}
-";
-
-            await VerifyItemExistsAsync(markup + colors, "Colors");
-            await VerifyItemIsAbsentAsync(markup + colorsLike, "Colors");
-        }
+                """
+                class C
+                {
+                    Colors Colors => $$
+                }
+                """;
+            var colors = """
+                enum Colors
+                {
+                    Red,
+                    Blue,
+                    Green,
+                }
+                """;
+            var colorsLike = """
+                readonly struct Colors
+                {
+                    public static readonly Colors Red;
+                    public static readonly Colors Blue;
+                    public static readonly Colors Green;
+                }
+                """;
+
+            await VerifyItemExistsAsync(markup + colors, "Colors");
+            await VerifyItemIsAbsentAsync(markup + colorsLike, "Colors");
+        }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4310")]
         public async Task InExpressionBodiedMethod()
         {
             var markup =
-@"class C
-{
-    Colors GetColors() => $$
-}
-";
-            var colors = @"
-enum Colors
-{
-    Red,
-    Blue,
-    Green,
-}
-";
-            var colorsLike = @"
-readonly struct Colors
-{
-    public static readonly Colors Red;
-    public static readonly Colors Blue;
-    public static readonly Colors Green;
-}
-";
+                """
+                class C
+                {
+                    Colors GetColors() => $$
+                }
+                """;
+            var colors = """
+                enum Colors
+                {
+                    Red,
+                    Blue,
+                    Green,
+                }
+                """;
+            var colorsLike = """
+                readonly struct Colors
+                {
+                    public static readonly Colors Red;
+                    public static readonly Colors Blue;
+                    public static readonly Colors Green;
+                }
+                """;
 
             await VerifyItemExistsAsync(markup + colors, "Colors");
             await VerifyItemIsAbsentAsync(markup + colorsLike, "Colors");
@@ -805,11 +825,12 @@ readonly struct Colors
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/60341")]
         public async Task NotAfterAsync1()
         {
-            var markup = @"
-class Test
-{
-    public async $$
-}";
+            var markup = """
+                class Test
+                {
+                    public async $$
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -817,12 +838,13 @@ public async $$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/60341")]
         public async Task NotAfterAsync2()
         {
-            var markup = @"
-class Test
-{
-    public async $$
-    public void M() {}
-}";
+            var markup = """
+                class Test
+                {
+                    public async $$
+                    public void M() {}
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -831,33 +853,34 @@ public void M() {}
         public async Task NotAfterDot()
         {
             var markup =
-@"namespace ConsoleApplication253
-{
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            M(E.$$)
-        }
+                """
+                namespace ConsoleApplication253
+                {
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            M(E.$$)
+                        }
 
-        static void M(E e) { }
-    }
-}
-";
-            var enumE = @"
-enum E
-{
-    A,
-    B,
-}
-";
-            var enumLikeE = @"
-readonly struct E
-{
-    public static readonly E A;
-    public static readonly E B;
-}
-";
+                        static void M(E e) { }
+                    }
+                }
+                """;
+            var enumE = """
+                enum E
+                {
+                    A,
+                    B,
+                }
+                """;
+            var enumLikeE = """
+                readonly struct E
+                {
+                    public static readonly E A;
+                    public static readonly E B;
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup + enumE);
             await VerifyNoItemsExistAsync(markup + enumLikeE);
@@ -867,33 +890,34 @@ readonly struct E
         public async Task NotAfterDotWithTextTyped()
         {
             var markup =
-@"namespace ConsoleApplication253
-{
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            M(E.a$$)
-        }
+                """
+                namespace ConsoleApplication253
+                {
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            M(E.a$$)
+                        }
 
-        static void M(E e) { }
-    }
-}
-";
-            var enumE = @"
-enum E
-{
-    A,
-    B,
-}
-";
-            var enumLikeE = @"
-readonly struct E
-{
-    public static readonly E A;
-    public static readonly E B;
-}
-";
+                        static void M(E e) { }
+                    }
+                }
+                """;
+            var enumE = """
+                enum E
+                {
+                    A,
+                    B,
+                }
+                """;
+            var enumLikeE = """
+                readonly struct E
+                {
+                    public static readonly E A;
+                    public static readonly E B;
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup + enumE);
             await VerifyNoItemsExistAsync(markup + enumLikeE);
@@ -903,18 +927,20 @@ readonly struct E
         public async Task TestInEnumInitializer1()
         {
             var markup =
-@"using System;
+                """
+                using System;
 
-[Flags]
-internal enum ProjectTreeWriterOptions
-{
-    None,
-    Tags,
-    FilePath,
-    Capabilities,
-    Visibility,
-    AllProperties = FilePath | Visibility | $$
-}";
+                [Flags]
+                internal enum ProjectTreeWriterOptions
+                {
+                    None,
+                    Tags,
+                    FilePath,
+                    Capabilities,
+                    Visibility,
+                    AllProperties = FilePath | Visibility | $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ProjectTreeWriterOptions");
         }
 
@@ -922,18 +948,20 @@ internal enum ProjectTreeWriterOptions
         public async Task TestInEnumInitializer2()
         {
             var markup =
-@"using System;
+                """
+                using System;
 
-[Flags]
-internal enum ProjectTreeWriterOptions
-{
-    None,
-    Tags,
-    FilePath,
-    Capabilities,
-    Visibility,
-    AllProperties = FilePath | $$ Visibility
-}";
+                [Flags]
+                internal enum ProjectTreeWriterOptions
+                {
+                    None,
+                    Tags,
+                    FilePath,
+                    Capabilities,
+                    Visibility,
+                    AllProperties = FilePath | $$ Visibility
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ProjectTreeWriterOptions");
         }
 
@@ -941,18 +969,20 @@ internal enum ProjectTreeWriterOptions
         public async Task TestInEnumInitializer3()
         {
             var markup =
-@"using System;
+                """
+                using System;
 
-[Flags]
-internal enum ProjectTreeWriterOptions
-{
-    None,
-    Tags,
-    FilePath,
-    Capabilities,
-    Visibility,
-    AllProperties = FilePath | $$ | Visibility
-}";
+                [Flags]
+                internal enum ProjectTreeWriterOptions
+                {
+                    None,
+                    Tags,
+                    FilePath,
+                    Capabilities,
+                    Visibility,
+                    AllProperties = FilePath | $$ | Visibility
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ProjectTreeWriterOptions");
         }
 
@@ -960,18 +990,20 @@ internal enum ProjectTreeWriterOptions
         public async Task TestInEnumInitializer4()
         {
             var markup =
-@"using System;
+                """
+                using System;
 
-[Flags]
-internal enum ProjectTreeWriterOptions
-{
-    None,
-    Tags,
-    FilePath,
-    Capabilities,
-    Visibility,
-    AllProperties = FilePath ^ $$
-}";
+                [Flags]
+                internal enum ProjectTreeWriterOptions
+                {
+                    None,
+                    Tags,
+                    FilePath,
+                    Capabilities,
+                    Visibility,
+                    AllProperties = FilePath ^ $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ProjectTreeWriterOptions");
         }
 
@@ -979,18 +1011,20 @@ internal enum ProjectTreeWriterOptions
         public async Task TestInEnumInitializer5()
         {
             var markup =
-@"using System;
+                """
+                using System;
 
-[Flags]
-internal enum ProjectTreeWriterOptions
-{
-    None,
-    Tags,
-    FilePath,
-    Capabilities,
-    Visibility,
-    AllProperties = FilePath & $$
-}";
+                [Flags]
+                internal enum ProjectTreeWriterOptions
+                {
+                    None,
+                    Tags,
+                    FilePath,
+                    Capabilities,
+                    Visibility,
+                    AllProperties = FilePath & $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "ProjectTreeWriterOptions");
         }
 
@@ -998,16 +1032,18 @@ internal enum ProjectTreeWriterOptions
         public async Task TestInEnumHasFlag()
         {
             var markup =
-@"using System.IO;
+                """
+                using System.IO;
 
-class C
-{
-    void M()
-    {
-        FileInfo f;
-        f.Attributes.HasFlag($$
-    }
-}";
+                class C
+                {
+                    void M()
+                    {
+                        FileInfo f;
+                        f.Attributes.HasFlag($$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "FileAttributes");
         }
 
@@ -1155,26 +1191,29 @@ Sample A()
         [Fact]
         public async Task TestEditorBrowsable_EnumTypeDotMemberAlways()
         {
-            var markup = @"
-class P
-{
-    public void S()
-    {
-        MyEnum d = $$;
-    }
-}";
-            var referencedCode = @"
-public enum MyEnum
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    Member
-}";
-            var referencedCode_EnumLike = @"
-public readonly struct MyEnum
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public static readonly MyEnum Member;
-}";
+            var markup = """
+                class P
+                {
+                    public void S()
+                    {
+                        MyEnum d = $$;
+                    }
+                }
+                """;
+            var referencedCode = """
+                public enum MyEnum
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    Member
+                }
+                """;
+            var referencedCode_EnumLike = """
+                public readonly struct MyEnum
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public static readonly MyEnum Member;
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -1198,26 +1237,29 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact]
         public async Task TestEditorBrowsable_EnumTypeDotMemberNever()
         {
-            var markup = @"
-class P
-{
-    public void S()
-    {
-        MyEnum d = $$;
-    }
-}";
-            var referencedCode = @"
-public enum MyEnum
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    Member
-}";
-            var referencedCode_EnumLike = @"
-public readonly struct MyEnum
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public static readonly MyEnum Member;
-}";
+            var markup = """
+                class P
+                {
+                    public void S()
+                    {
+                        MyEnum d = $$;
+                    }
+                }
+                """;
+            var referencedCode = """
+                public enum MyEnum
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    Member
+                }
+                """;
+            var referencedCode_EnumLike = """
+                public readonly struct MyEnum
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public static readonly MyEnum Member;
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -1241,26 +1283,29 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact]
         public async Task TestEditorBrowsable_EnumTypeDotMemberAdvanced()
         {
-            var markup = @"
-class P
-{
-    public void S()
-    {
-        MyEnum d = $$;
-    }
-}";
-            var referencedCode = @"
-public enum MyEnum
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-    Member
-}";
-            var referencedCode_EnumLike = @"
-public readonly struct MyEnum
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-    public static readonly MyEnum Member;
-}";
+            var markup = """
+                class P
+                {
+                    public void S()
+                    {
+                        MyEnum d = $$;
+                    }
+                }
+                """;
+            var referencedCode = """
+                public enum MyEnum
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    Member
+                }
+                """;
+            var referencedCode_EnumLike = """
+                public readonly struct MyEnum
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    public static readonly MyEnum Member;
+                }
+                """;
 
             HideAdvancedMembers = true;
 
@@ -1310,36 +1355,36 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact]
         public async Task TestTriggeredOnOpenParen()
         {
-            var markup = @"
-static class Program
-{
-    public static void Main(string[] args)
-    {
-        // type after this line
-        Bar($$
-    }
+            var markup = """
+                static class Program
+                {
+                    public static void Main(string[] args)
+                    {
+                        // type after this line
+                        Bar($$
+                    }
 
-    public static void Bar(Goo f)
-    {
-    }
-}
-";
-            var goo = @"
-enum Goo
-{
-    AMember,
-    BMember,
-    CMember
-}
-";
-            var gooLike = @"
-readonly struct Goo
-{
-    public static readonly Goo AMember;
-    public static readonly Goo BMember;
-    public static readonly Goo CMember;
-}
-";
+                    public static void Bar(Goo f)
+                    {
+                    }
+                }
+                """;
+            var goo = """
+                enum Goo
+                {
+                    AMember,
+                    BMember,
+                    CMember
+                }
+                """;
+            var gooLike = """
+                readonly struct Goo
+                {
+                    public static readonly Goo AMember;
+                    public static readonly Goo BMember;
+                    public static readonly Goo CMember;
+                }
+                """;
 
             await VerifyItemExistsAsync(markup + goo, "Goo.AMember", usePreviousCharAsTrigger: true);
             await VerifyItemExistsAsync(markup + goo, "Goo.AMember", usePreviousCharAsTrigger: false);
@@ -1350,32 +1395,32 @@ readonly struct Goo
         [Fact]
         public async Task TestRightSideOfAssignment()
         {
-            var markup = @"
-static class Program
-{
-    public static void Main(string[] args)
-    {
-        Goo x;
-        x = $$;
-    }
-}
-";
-            var goo = @"
-enum Goo
-{
-    AMember,
-    BMember,
-    CMember
-}
-";
-            var gooLike = @"
-readonly struct Goo
-{
-    public static readonly Goo AMember;
-    public static readonly Goo BMember;
-    public static readonly Goo CMember;
-}
-";
+            var markup = """
+                static class Program
+                {
+                    public static void Main(string[] args)
+                    {
+                        Goo x;
+                        x = $$;
+                    }
+                }
+                """;
+            var goo = """
+                enum Goo
+                {
+                    AMember,
+                    BMember,
+                    CMember
+                }
+                """;
+            var gooLike = """
+                readonly struct Goo
+                {
+                    public static readonly Goo AMember;
+                    public static readonly Goo BMember;
+                    public static readonly Goo CMember;
+                }
+                """;
 
             await VerifyItemExistsAsync(markup + goo, "Goo.AMember", usePreviousCharAsTrigger: true);
             await VerifyItemExistsAsync(markup + goo, "Goo.AMember", usePreviousCharAsTrigger: false);
@@ -1386,36 +1431,36 @@ readonly struct Goo
         [Fact]
         public async Task TestCaseStatement()
         {
-            var markup = @"
-static class Module1
-{
-    public static void Main(string[] args)
-    {
-        var value = E.A;
+            var markup = """
+                static class Module1
+                {
+                    public static void Main(string[] args)
+                    {
+                        var value = E.A;
 
-        switch (value)
-        {
-            case $$
-        }
-    }
-}
-";
-            var e = @"
-enum E
-{
-    A,
-    B,
-    C
-}
-";
-            var eLike = @"
-readonly struct E
-{
-    public static readonly E A;
-    public static readonly E B;
-    public static readonly E C;
-}
-";
+                        switch (value)
+                        {
+                            case $$
+                        }
+                    }
+                }
+                """;
+            var e = """
+                enum E
+                {
+                    A,
+                    B,
+                    C
+                }
+                """;
+            var eLike = """
+                readonly struct E
+                {
+                    public static readonly E A;
+                    public static readonly E B;
+                    public static readonly E C;
+                }
+                """;
 
             await VerifyItemExistsAsync(e + markup, "E.A", usePreviousCharAsTrigger: true);
             await VerifyItemExistsAsync(e + markup, "E.A", usePreviousCharAsTrigger: false);
@@ -1594,27 +1639,27 @@ struct DateTime
         [Fact]
         public async Task TestCaseStatementWithInt32InferredType()
         {
-            var markup = @"
-class C
-{
-    public void M(DayOfWeek day)
-    {
-        switch (day)
-        {
-            case DayOfWeek.A:
-                break;
+            var markup = """
+                class C
+                {
+                    public void M(DayOfWeek day)
+                    {
+                        switch (day)
+                        {
+                            case DayOfWeek.A:
+                                break;
 
-            case $$
-        }
-    }
+                            case $$
+                        }
+                    }
 
-    enum DayOfWeek
-    {
-        A,
-        B
-    }
-}
-";
+                    enum DayOfWeek
+                    {
+                        A,
+                        B
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "DayOfWeek.A");
             await VerifyItemExistsAsync(markup, "DayOfWeek.B");
@@ -1623,20 +1668,20 @@ enum DayOfWeek
         [Fact]
         public async Task TestLocalNoAs()
         {
-            var markup = @"
-enum E
-{
-    A
-}
+            var markup = """
+                enum E
+                {
+                    A
+                }
 
-class C
-{
-    public void M()
-    {
-        const E e = e$$;
-    }
-}
-";
+                class C
+                {
+                    public void M()
+                    {
+                        const E e = e$$;
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "E.A");
             await VerifyItemIsAbsentAsync(markup, "e as E");
@@ -1645,20 +1690,20 @@ public void M()
         [Fact]
         public async Task TestIncludeEnumAfterTyping()
         {
-            var markup = @"
-enum E
-{
-    A
-}
+            var markup = """
+                enum E
+                {
+                    A
+                }
 
-class C
-{
-    public void M()
-    {
-        const E e = e$$;
-    }
-}
-";
+                class C
+                {
+                    public void M()
+                    {
+                        const E e = e$$;
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "E.A");
         }
@@ -1666,62 +1711,62 @@ public void M()
         [Fact]
         public async Task TestNotInTrivia()
         {
-            var markup = @"
-class C
-{
-    public void M(DayOfWeek day)
-    {
-        switch (day)
-        {
-            case DayOfWeek.A:
-            case DayOfWeek.B// $$
-                :
-                    break;
-        }
-    }
+            var markup = """
+                class C
+                {
+                    public void M(DayOfWeek day)
+                    {
+                        switch (day)
+                        {
+                            case DayOfWeek.A:
+                            case DayOfWeek.B// $$
+                                :
+                                    break;
+                        }
+                    }
 
-    enum DayOfWeek
-    {
-        A,
-        B
-    }
-}
-";
+                    enum DayOfWeek
+                    {
+                        A,
+                        B
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task TestCommitOnComma()
         {
-            var markup = @"
-enum E
-{
-    A
-}
+            var markup = """
+                enum E
+                {
+                    A
+                }
 
-class C
-{
-    public void M()
-    {
-        const E e = $$
-    }
-}
-";
+                class C
+                {
+                    public void M()
+                    {
+                        const E e = $$
+                    }
+                }
+                """;
 
-            var expected = @"
-enum E
-{
-    A
-}
+            var expected = """
+                enum E
+                {
+                    A
+                }
 
-class C
-{
-    public void M()
-    {
-        const E e = E.A;
-    }
-}
-";
+                class C
+                {
+                    public void M()
+                    {
+                        const E e = E.A;
+                    }
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "E.A", expected, ';');
         }
@@ -1798,18 +1843,18 @@ public void Main()
         [Fact]
         public async Task EnumMember_TestInEnumHasFlag()
         {
-            var markup = @"
-using System.IO;
+            var markup = """
+                using System.IO;
 
-class C
-{
-    public void Main()
-    {
-        FileInfo f;
-        f.Attributes.HasFlag($$
-    }
-}
-";
+                class C
+                {
+                    public void Main()
+                    {
+                        FileInfo f;
+                        f.Attributes.HasFlag($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "FileAttributes.Hidden");
         }
@@ -1817,44 +1862,44 @@ public void Main()
         [Fact]
         public async Task TestMultipleEnumsCausedByOverloads()
         {
-            var markup = @"
-class C
-{
-    public enum Color
-    {
-        Red,
-        Green,
-    }
+            var markup = """
+                class C
+                {
+                    public enum Color
+                    {
+                        Red,
+                        Green,
+                    }
 
-    public enum Palette
-    {
-        AccentColor1,
-        AccentColor2,
-    }
+                    public enum Palette
+                    {
+                        AccentColor1,
+                        AccentColor2,
+                    }
 
-    public readonly struct ColorLike
-    {
-        public static readonly ColorLike Red;
-        public static readonly ColorLike Green;
-    }
+                    public readonly struct ColorLike
+                    {
+                        public static readonly ColorLike Red;
+                        public static readonly ColorLike Green;
+                    }
 
-    public readonly struct PaletteLike
-    {
-        public static readonly PaletteLike AccentColor1;
-        public static readonly PaletteLike AccentColor2;
-    }
+                    public readonly struct PaletteLike
+                    {
+                        public static readonly PaletteLike AccentColor1;
+                        public static readonly PaletteLike AccentColor2;
+                    }
 
-    public void SetColor(Color color) { }
-    public void SetColor(Palette palette) { }
-    public void SetColor(ColorLike color) { }
-    public void SetColor(PaletteLike palette) { }
+                    public void SetColor(Color color) { }
+                    public void SetColor(Palette palette) { }
+                    public void SetColor(ColorLike color) { }
+                    public void SetColor(PaletteLike palette) { }
 
-    public void Main()
-    {
-        SetColor($$
-    }
-}
-";
+                    public void Main()
+                    {
+                        SetColor($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Color.Red");
             await VerifyItemExistsAsync(markup, "Palette.AccentColor1");
@@ -2002,71 +2047,71 @@ public void M()
         [Fact]
         public async Task TestPatterns_SwitchStatement_PropertyPattern()
         {
-            var markup = @"
-public enum Color
-{
-    Red,
-    Green,
-}
+            var markup = """
+                public enum Color
+                {
+                    Red,
+                    Green,
+                }
 
-class C
-{
-    public Color Color { get; }
+                class C
+                {
+                    public Color Color { get; }
 
-    public void M()
-    {
-        switch (this)
-        {
-            case { Color: $$
-    }
-}
-";
+                    public void M()
+                    {
+                        switch (this)
+                        {
+                            case { Color: $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "Color.Red");
         }
 
         [Fact]
         public async Task TestPatterns_SwitchExpression_PropertyPattern()
         {
-            var markup = @"
-public enum Color
-{
-    Red,
-    Green,
-}
+            var markup = """
+                public enum Color
+                {
+                    Red,
+                    Green,
+                }
 
-class C
-{
-    public Color Color { get; }
+                class C
+                {
+                    public Color Color { get; }
 
-    public void M()
-    {
-        var isRed = this switch
-        {
-            { Color: $$
-    }
-}
-";
+                    public void M()
+                    {
+                        var isRed = this switch
+                        {
+                            { Color: $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "Color.Red");
         }
 
         [Fact]
         public async Task TestStaticAndInstanceMembers()
         {
-            var markup = @"
-public readonly struct Color
-{
-    public static readonly Color Red;
-    public readonly Color Green;
-}
+            var markup = """
+                public readonly struct Color
+                {
+                    public static readonly Color Red;
+                    public readonly Color Green;
+                }
 
-class C
-{
-    public void M(Color color)
-    {
-        M($$
-    }
-}
-";
+                class C
+                {
+                    public void M(Color color)
+                    {
+                        M($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Color.Red");
             await VerifyItemIsAbsentAsync(markup, "Color.Green");
@@ -2075,21 +2120,21 @@ public void M(Color color)
         [Fact]
         public async Task TestProperties()
         {
-            var markup = @"
-public readonly struct Color
-{
-    public static Color Red { get; }
-    public Color Green { get; }
-}
+            var markup = """
+                public readonly struct Color
+                {
+                    public static Color Red { get; }
+                    public Color Green { get; }
+                }
 
-class C
-{
-    public void M(Color color)
-    {
-        M($$
-    }
-}
-";
+                class C
+                {
+                    public void M(Color color)
+                    {
+                        M($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Color.Red");
             await VerifyItemIsAbsentAsync(markup, "Color.Green");
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceMemberCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceMemberCompletionProviderTests.cs
index 8151107a59298..80bd8adfa92b3 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceMemberCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceMemberCompletionProviderTests.cs
@@ -20,21 +20,22 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task ExplicitInterfaceMember_01()
         {
-            var markup = @"
-interface IGoo
-{
-    void Goo();
-    void Goo(int x);
-    int Prop { get; }
-    int Generic<K, V>(K key, V value);
-    string this[int i] { get; }
-    void With_Underscore();
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
+            var markup = """
+                interface IGoo
+                {
+                    void Goo();
+                    void Goo(int x);
+                    int Prop { get; }
+                    int Generic<K, V>(K key, V value);
+                    string this[int i] { get; }
+                    void With_Underscore();
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "()");
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "(int x)");
@@ -47,18 +48,19 @@ void IGoo.$$
         [Fact]
         public async Task ExplicitInterfaceMember_02()
         {
-            var markup = @"
-interface IGoo
-{
-    void Goo();
-    void Goo(int x);
-    int Prop { get; }
-}
+            var markup = """
+                interface IGoo
+                {
+                    void Goo();
+                    void Goo(int x);
+                    int Prop { get; }
+                }
 
-interface IBar : IGoo
-{
-     void IGoo.$$
-}";
+                interface IBar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "()");
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "(int x)");
@@ -68,18 +70,19 @@ void IGoo.$$
         [Fact]
         public async Task ExplicitInterfaceMember_03()
         {
-            var markup = @"
-interface IGoo
-{
-    virtual void Goo() {}
-    virtual void Goo(int x) {}
-    virtual int Prop { get => 0; }
-}
+            var markup = """
+                interface IGoo
+                {
+                    virtual void Goo() {}
+                    virtual void Goo(int x) {}
+                    virtual int Prop { get => 0; }
+                }
 
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "()");
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "(int x)");
@@ -89,18 +92,19 @@ void IGoo.$$
         [Fact]
         public async Task ExplicitInterfaceMember_04()
         {
-            var markup = @"
-interface IGoo
-{
-    virtual void Goo() {}
-    virtual void Goo(int x) {}
-    virtual int Prop { get => 0; }
-}
+            var markup = """
+                interface IGoo
+                {
+                    virtual void Goo() {}
+                    virtual void Goo(int x) {}
+                    virtual int Prop { get => 0; }
+                }
 
-interface IBar : IGoo
-{
-     void IGoo.$$
-}";
+                interface IBar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "()");
             await VerifyItemExistsAsync(markup, "Goo", displayTextSuffix: "(int x)");
@@ -110,27 +114,29 @@ void IGoo.$$
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/709988")]
         public async Task CommitOnNotParen()
         {
-            var markup = @"
-interface IGoo
-{
-    void Goo();
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    void Goo();
-}
-
-class Bar : IGoo
-{
-     void IGoo.Goo()
-}";
+            var markup = """
+                interface IGoo
+                {
+                    void Goo();
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    void Goo();
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.Goo()
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "Goo()", expected, null);
         }
@@ -138,27 +144,29 @@ void IGoo.Goo()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/709988")]
         public async Task CommitOnParen()
         {
-            var markup = @"
-interface IGoo
-{
-    void Goo();
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    void Goo();
-}
-
-class Bar : IGoo
-{
-     void IGoo.Goo(
-}";
+            var markup = """
+                interface IGoo
+                {
+                    void Goo();
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    void Goo();
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.Goo(
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "Goo()", expected, '(');
         }
@@ -166,22 +174,23 @@ void IGoo.Goo(
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19947")]
         public async Task ExplicitInterfaceMemberCompletionContainsOnlyValidValues()
         {
-            var markup = @"
-interface I1
-{
-    void Goo();
-}
+            var markup = """
+                interface I1
+                {
+                    void Goo();
+                }
 
-interface I2 : I1
-{
-    void Goo2();
-    int Prop { get; }
-}
+                interface I2 : I1
+                {
+                    void Goo2();
+                    int Prop { get; }
+                }
 
-class Bar : I2
-{
-     void I2.$$
-}";
+                class Bar : I2
+                {
+                     void I2.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Equals(object obj)");
             await VerifyItemIsAbsentAsync(markup, "Goo()");
@@ -196,19 +205,19 @@ void I2.$$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/26595")]
         public async Task ExplicitInterfaceMemberCompletionDoesNotContainAccessors()
         {
-            var markup = @"
+            var markup = """
+                interface I1
+                {
+                    void Foo();
+                    int Prop { get; }
+                    event EventHandler TestEvent;
+                }
 
-interface I1
-{
-    void Foo();
-    int Prop { get; }
-    event EventHandler TestEvent;
-}
-
-class Bar : I1
-{
-     void I1.$$
-}";
+                class Bar : I1
+                {
+                     void I1.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Prop.get");
             await VerifyItemIsAbsentAsync(markup, "TestEvent.add");
@@ -222,17 +231,18 @@ void I1.$$
         [Fact]
         public async Task NotStaticMember_01()
         {
-            var markup = @"
-interface IGoo
-{
-    static void Goo() {}
-    static int Prop { get => 0; }
-}
+            var markup = """
+                interface IGoo
+                {
+                    static void Goo() {}
+                    static int Prop { get => 0; }
+                }
 
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo()");
             await VerifyItemIsAbsentAsync(markup, "Prop");
@@ -241,17 +251,18 @@ void IGoo.$$
         [Fact]
         public async Task NotStaticMember_02()
         {
-            var markup = @"
-interface IGoo
-{
-    static void Goo() {}
-    static int Prop { get => 0; }
-}
+            var markup = """
+                interface IGoo
+                {
+                    static void Goo() {}
+                    static int Prop { get => 0; }
+                }
 
-interface IBar : IGoo
-{
-     void IGoo.$$
-}";
+                interface IBar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo()");
             await VerifyItemIsAbsentAsync(markup, "Prop");
@@ -260,17 +271,18 @@ void IGoo.$$
         [Fact]
         public async Task NotSealedMember_01()
         {
-            var markup = @"
-interface IGoo
-{
-    sealed void Goo() {}
-    sealed int Prop { get => 0; }
-}
+            var markup = """
+                interface IGoo
+                {
+                    sealed void Goo() {}
+                    sealed int Prop { get => 0; }
+                }
 
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo()");
             await VerifyItemIsAbsentAsync(markup, "Prop");
@@ -279,17 +291,18 @@ void IGoo.$$
         [Fact]
         public async Task NotSealedMember_02()
         {
-            var markup = @"
-interface IGoo
-{
-    sealed void Goo() {}
-    sealed int Prop { get => 0; }
-}
+            var markup = """
+                interface IGoo
+                {
+                    sealed void Goo() {}
+                    sealed int Prop { get => 0; }
+                }
 
-interface IBar : IGoo
-{
-     void IGoo.$$
-}";
+                interface IBar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo()");
             await VerifyItemIsAbsentAsync(markup, "Prop");
@@ -298,18 +311,19 @@ void IGoo.$$
         [Fact]
         public async Task NotNestedType_01()
         {
-            var markup = @"
-interface IGoo
-{
-    public abstract class Goo
-    {
-    }
-}
+            var markup = """
+                interface IGoo
+                {
+                    public abstract class Goo
+                    {
+                    }
+                }
 
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo");
         }
@@ -317,18 +331,19 @@ void IGoo.$$
         [Fact]
         public async Task NotNestedType_02()
         {
-            var markup = @"
-interface IGoo
-{
-    public abstract class Goo
-    {
-    }
-}
+            var markup = """
+                interface IGoo
+                {
+                    public abstract class Goo
+                    {
+                    }
+                }
 
-interface IBar : IGoo
-{
-     void IGoo.$$
-}";
+                interface IBar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo");
         }
@@ -337,30 +352,32 @@ void IGoo.$$
         public async Task NotInaccessibleMember_01()
         {
             var markup =
-@"<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <ProjectReference>Assembly2</ProjectReference>
-        <Document FilePath=""Test1.cs"">
-<![CDATA[
-class Bar : IGoo
-{
-     void IGoo.$$
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"" LanguageVersion=""Preview"">
-        <Document FilePath=""Test2.cs"">
-public interface IGoo
-{
-    internal void Goo1() {}
-    internal int Prop1 { get => 0; }
-    protected void Goo2() {}
-    protected int Prop2 { get => 0; }
-}
-        </Document>
-    </Project>
-</Workspace>";
+                """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                        <ProjectReference>Assembly2</ProjectReference>
+                        <Document FilePath="Test1.cs">
+                <![CDATA[
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true" LanguageVersion="Preview">
+                        <Document FilePath="Test2.cs">
+                public interface IGoo
+                {
+                    internal void Goo1() {}
+                    internal int Prop1 { get => 0; }
+                    protected void Goo2() {}
+                    protected int Prop2 { get => 0; }
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo1", displayTextSuffix: "()");
             await VerifyItemIsAbsentAsync(markup, "Prop1");
@@ -372,30 +389,32 @@ protected void Goo2() {}
         public async Task NotInaccessibleMember_02()
         {
             var markup =
-@"<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <ProjectReference>Assembly2</ProjectReference>
-        <Document FilePath=""Test1.cs"">
-<![CDATA[
-interface IBar : IGoo
-{
-     void IGoo.$$
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"" LanguageVersion=""Preview"">
-        <Document FilePath=""Test2.cs"">
-public interface IGoo
-{
-    internal void Goo1() {}
-    internal int Prop1 { get => 0; }
-    protected void Goo2() {}
-    protected int Prop2 { get => 0; }
-}
-        </Document>
-    </Project>
-</Workspace>";
+                """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                        <ProjectReference>Assembly2</ProjectReference>
+                        <Document FilePath="Test1.cs">
+                <![CDATA[
+                interface IBar : IGoo
+                {
+                     void IGoo.$$
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true" LanguageVersion="Preview">
+                        <Document FilePath="Test2.cs">
+                public interface IGoo
+                {
+                    internal void Goo1() {}
+                    internal int Prop1 { get => 0; }
+                    protected void Goo2() {}
+                    protected int Prop2 { get => 0; }
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Goo1", displayTextSuffix: "()");
             await VerifyItemIsAbsentAsync(markup, "Prop1");
@@ -406,27 +425,29 @@ protected void Goo2() {}
         [Fact]
         public async Task VerifySignatureCommit_Generic_Tab()
         {
-            var markup = @"
-interface IGoo
-{
-    int Generic<K, V>(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    int Generic<K, V>(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.Generic<K, V>(K key, V value)
-}";
+            var markup = """
+                interface IGoo
+                {
+                    int Generic<K, V>(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    int Generic<K, V>(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.Generic<K, V>(K key, V value)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "Generic<K, V>(K key, V value)", expected, '\t');
         }
@@ -434,27 +455,29 @@ void IGoo.Generic<K, V>(K key, V value)
         [Fact]
         public async Task VerifySignatureCommit_Generic_OpenBrace()
         {
-            var markup = @"
-interface IGoo
-{
-    int Generic<K, V>(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    int Generic<K, V>(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.Generic<
-}";
+            var markup = """
+                interface IGoo
+                {
+                    int Generic<K, V>(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    int Generic<K, V>(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.Generic<
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "Generic<K, V>(K key, V value)", expected, '<');
         }
@@ -462,27 +485,29 @@ void IGoo.Generic<
         [Fact]
         public async Task VerifySignatureCommit_Method_Tab()
         {
-            var markup = @"
-interface IGoo
-{
-    int Generic(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    int Generic(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.Generic(K key, V value)
-}";
+            var markup = """
+                interface IGoo
+                {
+                    int Generic(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    int Generic(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.Generic(K key, V value)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "Generic(K key, V value)", expected, '\t');
         }
@@ -490,27 +515,29 @@ void IGoo.Generic(K key, V value)
         [Fact]
         public async Task VerifySignatureCommit_Method_OpenBrace()
         {
-            var markup = @"
-interface IGoo
-{
-    int Generic(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    int Generic(K key, V value);
-}
-
-class Bar : IGoo
-{
-     void IGoo.Generic(
-}";
+            var markup = """
+                interface IGoo
+                {
+                    int Generic(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    int Generic(K key, V value);
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.Generic(
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "Generic(K key, V value)", expected, '(');
         }
@@ -518,27 +545,29 @@ void IGoo.Generic(
         [Fact]
         public async Task VerifySignatureCommit_Indexer_Tab()
         {
-            var markup = @"
-interface IGoo
-{
-    int this[K key, V value] { get; }
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    int this[K key, V value] { get; }
-}
-
-class Bar : IGoo
-{
-     void IGoo.this[K key, V value]
-}";
+            var markup = """
+                interface IGoo
+                {
+                    int this[K key, V value] { get; }
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    int this[K key, V value] { get; }
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.this[K key, V value]
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "this[K key, V value]", expected, '\t');
         }
@@ -546,27 +575,29 @@ class Bar : IGoo
         [Fact]
         public async Task VerifySignatureCommit_Indexer_OpenBrace()
         {
-            var markup = @"
-interface IGoo
-{
-    int this[K key, V value] { get; }
-}
-
-class Bar : IGoo
-{
-     void IGoo.$$
-}";
-
-            var expected = @"
-interface IGoo
-{
-    int this[K key, V value] { get; }
-}
-
-class Bar : IGoo
-{
-     void IGoo.this[
-}";
+            var markup = """
+                interface IGoo
+                {
+                    int this[K key, V value] { get; }
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.$$
+                }
+                """;
+
+            var expected = """
+                interface IGoo
+                {
+                    int this[K key, V value] { get; }
+                }
+
+                class Bar : IGoo
+                {
+                     void IGoo.this[
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "this[K key, V value]", expected, '[');
         }
@@ -607,29 +638,29 @@ void I.M({refKind} string s)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/53924")]
         public async Task TestStaticAbstractInterfaceMember()
         {
-            var markup = @"
-interface I2<T> where T : I2<T>
-{
-    abstract static implicit operator int(T x);
-}
-
-class Test2 : I2<Test2>
-{
-    static implicit I2<Test2>.$$
-}
-";
-
-            var expected = @"
-interface I2<T> where T : I2<T>
-{
-    abstract static implicit operator int(T x);
-}
-
-class Test2 : I2<Test2>
-{
-    static implicit I2<Test2>.operator int(Test2 x)
-}
-";
+            var markup = """
+                interface I2<T> where T : I2<T>
+                {
+                    abstract static implicit operator int(T x);
+                }
+
+                class Test2 : I2<Test2>
+                {
+                    static implicit I2<Test2>.$$
+                }
+                """;
+
+            var expected = """
+                interface I2<T> where T : I2<T>
+                {
+                    abstract static implicit operator int(T x);
+                }
+
+                class Test2 : I2<Test2>
+                {
+                    static implicit I2<Test2>.operator int(Test2 x)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "operator int(Test2 x)", expected, '\t');
         }
@@ -637,31 +668,31 @@ static implicit I2<Test2>.operator int(Test2 x)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/53924")]
         public async Task TestStaticAbstractInterfaceMember_TrueOperator()
         {
-            var markup = @"
-interface I<T> where T : I<T>
-{
-    abstract static bool operator true(T x);
-    abstract static bool operator false(T x);
-}
-
-class C : I<C>
-{
-    static bool I<C>.$$
-}
-";
-
-            var expected = @"
-interface I<T> where T : I<T>
-{
-    abstract static bool operator true(T x);
-    abstract static bool operator false(T x);
-}
-
-class C : I<C>
-{
-    static bool I<C>.operator true(C x)
-}
-";
+            var markup = """
+                interface I<T> where T : I<T>
+                {
+                    abstract static bool operator true(T x);
+                    abstract static bool operator false(T x);
+                }
+
+                class C : I<C>
+                {
+                    static bool I<C>.$$
+                }
+                """;
+
+            var expected = """
+                interface I<T> where T : I<T>
+                {
+                    abstract static bool operator true(T x);
+                    abstract static bool operator false(T x);
+                }
+
+                class C : I<C>
+                {
+                    static bool I<C>.operator true(C x)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "operator true(C x)", expected, '\t');
         }
@@ -669,29 +700,29 @@ static bool I<C>.operator true(C x)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/53924")]
         public async Task TestStaticAbstractInterfaceMember_UnaryPlusOperator()
         {
-            var markup = @"
-interface I<T> where T : I<T>
-{
-    abstract static T operator +(T x);
-}
-
-class C : I<C>
-{
-    static C I<C>.$$
-}
-";
-
-            var expected = @"
-interface I<T> where T : I<T>
-{
-    abstract static T operator +(T x);
-}
-
-class C : I<C>
-{
-    static C I<C>.operator +(C x)
-}
-";
+            var markup = """
+                interface I<T> where T : I<T>
+                {
+                    abstract static T operator +(T x);
+                }
+
+                class C : I<C>
+                {
+                    static C I<C>.$$
+                }
+                """;
+
+            var expected = """
+                interface I<T> where T : I<T>
+                {
+                    abstract static T operator +(T x);
+                }
+
+                class C : I<C>
+                {
+                    static C I<C>.operator +(C x)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "operator +(C x)", expected, '\t');
         }
@@ -699,29 +730,29 @@ class C : I<C>
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/53924")]
         public async Task TestStaticAbstractInterfaceMember_BinaryPlusOperator()
         {
-            var markup = @"
-interface I<T> where T : I<T>
-{
-    abstract static T operator +(T x, T y);
-}
-
-class C : I<C>
-{
-    static C I<C>.$$
-}
-";
-
-            var expected = @"
-interface I<T> where T : I<T>
-{
-    abstract static T operator +(T x, T y);
-}
-
-class C : I<C>
-{
-    static C I<C>.operator +(C x, C y)
-}
-";
+            var markup = """
+                interface I<T> where T : I<T>
+                {
+                    abstract static T operator +(T x, T y);
+                }
+
+                class C : I<C>
+                {
+                    static C I<C>.$$
+                }
+                """;
+
+            var expected = """
+                interface I<T> where T : I<T>
+                {
+                    abstract static T operator +(T x, T y);
+                }
+
+                class C : I<C>
+                {
+                    static C I<C>.operator +(C x, C y)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "operator +(C x, C y)", expected, '\t');
         }
@@ -729,29 +760,29 @@ class C : I<C>
         [Fact]
         public async Task TestWithParamsParameter()
         {
-            var markup = @"
-interface I
-{
-    void M(params string[] args);
-}
-
-class C : I
-{
-    void I.$$
-}
-";
-
-            var expected = @"
-interface I
-{
-    void M(params string[] args);
-}
-
-class C : I
-{
-    void I.M(params string[] args)
-}
-";
+            var markup = """
+                interface I
+                {
+                    void M(params string[] args);
+                }
+
+                class C : I
+                {
+                    void I.$$
+                }
+                """;
+
+            var expected = """
+                interface I
+                {
+                    void M(params string[] args);
+                }
+
+                class C : I
+                {
+                    void I.M(params string[] args)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "M(params string[] args)", expected, '\t');
         }
@@ -759,33 +790,33 @@ void I.M(params string[] args)
         [Fact]
         public async Task TestWithNullable()
         {
-            var markup = @"
-#nullable enable
+            var markup = """
+                #nullable enable
 
-interface I
-{
-    void M<T>(T? x);
-}
+                interface I
+                {
+                    void M<T>(T? x);
+                }
 
-class C : I
-{
-    void I.$$
-}
-";
+                class C : I
+                {
+                    void I.$$
+                }
+                """;
 
-            var expected = @"
-#nullable enable
+            var expected = """
+                #nullable enable
 
-interface I
-{
-    void M<T>(T? x);
-}
+                interface I
+                {
+                    void M<T>(T? x);
+                }
 
-class C : I
-{
-    void I.M<T>(T? x)
-}
-";
+                class C : I
+                {
+                    void I.M<T>(T? x)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "M<T>(T? x)", expected, '\t');
         }
@@ -793,29 +824,29 @@ void I.M<T>(T? x)
         [Fact]
         public async Task TestEscapeIdentifier()
         {
-            var markup = @"
-interface I
-{
-    void M(string @class);
-}
-
-class C : I
-{
-    void I.$$
-}
-";
-
-            var expected = @"
-interface I
-{
-    void M(string @class);
-}
-
-class C : I
-{
-    void I.M(string @class)
-}
-";
+            var markup = """
+                interface I
+                {
+                    void M(string @class);
+                }
+
+                class C : I
+                {
+                    void I.$$
+                }
+                """;
+
+            var expected = """
+                interface I
+                {
+                    void M(string @class);
+                }
+
+                class C : I
+                {
+                    void I.M(string @class)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "M(string @class)", expected, '\t');
         }
@@ -823,29 +854,29 @@ void I.M(string @class)
         [Fact]
         public async Task TestEscapeIdentifier2()
         {
-            var markup = @"
-interface I
-{
-    void M<@class>();
-}
-
-class C : I
-{
-    void I.$$
-}
-";
-
-            var expected = @"
-interface I
-{
-    void M<@class>();
-}
-
-class C : I
-{
-    void I.M<@class>()
-}
-";
+            var markup = """
+                interface I
+                {
+                    void M<@class>();
+                }
+
+                class C : I
+                {
+                    void I.$$
+                }
+                """;
+
+            var expected = """
+                interface I
+                {
+                    void M<@class>();
+                }
+
+                class C : I
+                {
+                    void I.M<@class>()
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "M<@class>()", expected, '\t');
         }
@@ -853,29 +884,29 @@ void I.M<@class>()
         [Fact]
         public async Task TestParameterWithDefaultValue()
         {
-            var markup = @"
-interface I
-{
-    void M(int x = 10);
-}
-
-class C : I
-{
-    void I.$$
-}
-";
-
-            var expected = @"
-interface I
-{
-    void M(int x = 10);
-}
-
-class C : I
-{
-    void I.M(int x)
-}
-";
+            var markup = """
+                interface I
+                {
+                    void M(int x = 10);
+                }
+
+                class C : I
+                {
+                    void I.$$
+                }
+                """;
+
+            var expected = """
+                interface I
+                {
+                    void M(int x = 10);
+                }
+
+                class C : I
+                {
+                    void I.M(int x)
+                }
+                """;
             // TODO: Consider adding the default value too.
             await VerifyProviderCommitAsync(markup, "M(int x)", expected, '\t');
         }
@@ -883,33 +914,33 @@ void I.M(int x)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/60215")]
         public async Task TestStaticAbstractCheckedUnaryOperator()
         {
-            var markup = @"
-interface I1<T> where T : I1<T>
-{
-    abstract static T operator checked -(T x);
+            var markup = """
+                interface I1<T> where T : I1<T>
+                {
+                    abstract static T operator checked -(T x);
 
-    abstract static T operator -(T x);
-}
+                    abstract static T operator -(T x);
+                }
 
-class C : I1<C>
-{
-    static C I1<C>.$$
-}
-";
+                class C : I1<C>
+                {
+                    static C I1<C>.$$
+                }
+                """;
 
-            var expected = @"
-interface I1<T> where T : I1<T>
-{
-    abstract static T operator checked -(T x);
+            var expected = """
+                interface I1<T> where T : I1<T>
+                {
+                    abstract static T operator checked -(T x);
 
-    abstract static T operator -(T x);
-}
+                    abstract static T operator -(T x);
+                }
 
-class C : I1<C>
-{
-    static C I1<C>.operator checked -(C x)
-}
-";
+                class C : I1<C>
+                {
+                    static C I1<C>.operator checked -(C x)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "operator checked -(C x)", expected, '\t');
         }
@@ -917,33 +948,33 @@ class C : I1<C>
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/60215")]
         public async Task TestStaticAbstractCheckedBinaryOperator()
         {
-            var markup = @"
-interface I1<T> where T : I1<T>
-{
-    abstract static T operator checked +(T x, T y);
+            var markup = """
+                interface I1<T> where T : I1<T>
+                {
+                    abstract static T operator checked +(T x, T y);
 
-    abstract static T operator +(T x, T y);
-}
+                    abstract static T operator +(T x, T y);
+                }
 
-class C : I1<C>
-{
-    static C I1<C>.$$
-}
-";
+                class C : I1<C>
+                {
+                    static C I1<C>.$$
+                }
+                """;
 
-            var expected = @"
-interface I1<T> where T : I1<T>
-{
-    abstract static T operator checked +(T x, T y);
+            var expected = """
+                interface I1<T> where T : I1<T>
+                {
+                    abstract static T operator checked +(T x, T y);
 
-    abstract static T operator +(T x, T y);
-}
+                    abstract static T operator +(T x, T y);
+                }
 
-class C : I1<C>
-{
-    static C I1<C>.operator checked +(C x, C y)
-}
-";
+                class C : I1<C>
+                {
+                    static C I1<C>.operator checked +(C x, C y)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "operator checked +(C x, C y)", expected, '\t');
         }
@@ -951,33 +982,33 @@ class C : I1<C>
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/60215")]
         public async Task TestStaticAbstractCheckedCastOperator()
         {
-            var markup = @"
-interface I1<T> where T : I1<T>
-{
-    abstract static explicit operator checked string(T x);
-    abstract static explicit operator string(T x);
-}
-
-
-class C3 : I1<C3>
-{
-    static C3 I1<C3>.$$
-}
-";
-
-            var expected = @"
-interface I1<T> where T : I1<T>
-{
-    abstract static explicit operator checked string(T x);
-    abstract static explicit operator string(T x);
-}
-
-
-class C3 : I1<C3>
-{
-    static C3 I1<C3>.operator checked string(C3 x)
-}
-";
+            var markup = """
+                interface I1<T> where T : I1<T>
+                {
+                    abstract static explicit operator checked string(T x);
+                    abstract static explicit operator string(T x);
+                }
+
+
+                class C3 : I1<C3>
+                {
+                    static C3 I1<C3>.$$
+                }
+                """;
+
+            var expected = """
+                interface I1<T> where T : I1<T>
+                {
+                    abstract static explicit operator checked string(T x);
+                    abstract static explicit operator string(T x);
+                }
+
+
+                class C3 : I1<C3>
+                {
+                    static C3 I1<C3>.operator checked string(C3 x)
+                }
+                """;
 
             await VerifyProviderCommitAsync(markup, "operator checked string(C3 x)", expected, '\t');
         }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceTypeCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceTypeCompletionProviderTests.cs
index 3a87ccd24488d..df17a7b37fd42 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceTypeCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExplicitInterfaceTypeCompletionProviderTests.cs
@@ -22,14 +22,14 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task TestAtStartOfClass()
         {
-            var markup = @"
-using System.Collections;
-
-class C : IList
-{
-    int $$
-}
-";
+            var markup = """
+                using System.Collections;
+
+                class C : IList
+                {
+                    int $$
+                }
+                """;
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
             await VerifyItemExistsAsync(markup, "ICollection");
@@ -65,26 +65,26 @@ public async Task TestAtStartOfRecord(string record)
         [Fact, WorkItem("https://devdiv.visualstudio.com/DefaultCollection/DevDiv/_workitems?id=459044")]
         public async Task TestInMisplacedUsing()
         {
-            var markup = @"
-class C
-{
-    using ($$)
-}
-";
+            var markup = """
+                class C
+                {
+                    using ($$)
+                }
+                """;
             await VerifyNoItemsExistAsync(markup); // no crash
         }
 
         [Fact]
         public async Task TestAtStartOfStruct()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-struct C : IList
-{
-    int $$
-}
-";
+                struct C : IList
+                {
+                    int $$
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -95,15 +95,15 @@ struct C : IList
         [Fact]
         public async Task TestAfterField()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    int i;
-    int $$
-}
-";
+                class C : IList
+                {
+                    int i;
+                    int $$
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -114,15 +114,15 @@ class C : IList
         [Fact]
         public async Task TestAfterMethod_01()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    void Goo() { }
-    int $$
-}
-";
+                class C : IList
+                {
+                    void Goo() { }
+                    int $$
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -133,15 +133,15 @@ void Goo() { }
         [Fact]
         public async Task TestAfterMethod_02()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-interface C : IList
-{
-    void Goo() { }
-    int $$
-}
-";
+                interface C : IList
+                {
+                    void Goo() { }
+                    int $$
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -152,15 +152,15 @@ void Goo() { }
         [Fact]
         public async Task TestAfterExpressionBody()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    int Goo() => 0;
-    int $$
-}
-";
+                class C : IList
+                {
+                    int Goo() => 0;
+                    int $$
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -171,18 +171,18 @@ class C : IList
         [Fact]
         public async Task TestWithAttributeFollowing()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    int Goo() => 0;
-    int $$
+                class C : IList
+                {
+                    int Goo() => 0;
+                    int $$
 
-    [Attr]
-    int Bar();
-}
-";
+                    [Attr]
+                    int Bar();
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -193,17 +193,17 @@ class C : IList
         [Fact]
         public async Task TestWithModifierFollowing()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    int Goo() => 0;
-    int $$
+                class C : IList
+                {
+                    int Goo() => 0;
+                    int $$
 
-    public int Bar();
-}
-";
+                    public int Bar();
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -214,17 +214,17 @@ class C : IList
         [Fact]
         public async Task TestWithTypeFollowing()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    int Goo() => 0;
-    int $$
+                class C : IList
+                {
+                    int Goo() => 0;
+                    int $$
 
-    int Bar();
-}
-";
+                    int Bar();
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -235,17 +235,17 @@ class C : IList
         [Fact]
         public async Task TestWithTypeFollowing2()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    int Goo() => 0;
-    int $$
+                class C : IList
+                {
+                    int Goo() => 0;
+                    int $$
 
-    X Bar();
-}
-";
+                    X Bar();
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -256,17 +256,17 @@ class C : IList
         [Fact]
         public async Task NotInMember()
         {
-            var markup = @"
-using System.Collections;
-
-class C : IList
-{
-    void Goo()
-    {
-        int $$
-    }
-}
-";
+            var markup = """
+                using System.Collections;
+
+                class C : IList
+                {
+                    void Goo()
+                    {
+                        int $$
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -274,14 +274,14 @@ void Goo()
         [Fact]
         public async Task NotWithAccessibility()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-class C : IList
-{
-    public int $$
-}
-";
+                class C : IList
+                {
+                    public int $$
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -289,14 +289,14 @@ public int $$
         [Fact]
         public async Task TestInInterface()
         {
-            var markup = @"
-using System.Collections;
+            var markup = """
+                using System.Collections;
 
-interface I : IList
-{
-    int $$
-}
-";
+                interface I : IList
+                {
+                    int $$
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IEnumerable");
@@ -307,16 +307,17 @@ interface I : IList
         [Fact]
         public async Task TestImplementedAsAsync()
         {
-            var markup = @"
-interface IGoo
-{
-    Task Goo();
-}
-
-class MyGoo : IGoo
-{
-     async Task $$
-}";
+            var markup = """
+                interface IGoo
+                {
+                    Task Goo();
+                }
+
+                class MyGoo : IGoo
+                {
+                     async Task $$
+                }
+                """;
 
             await VerifyAnyItemExistsAsync(markup, hasSuggestionModeItem: true);
             await VerifyItemExistsAsync(markup, "IGoo");
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExtensionMethodImportCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExtensionMethodImportCompletionProviderTests.cs
index ae8e8785b65a0..e3f50248b213b 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExtensionMethodImportCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExtensionMethodImportCompletionProviderTests.cs
@@ -133,31 +133,33 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UsingAliasInDeclaration(ReferenceType refType)
         {
-            var file1 = @"
-using System;
-using MyInt = System.Int32;
+            var file1 = """
+                using System;
+                using MyInt = System.Int32;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this MyInt x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this MyInt x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -171,31 +173,33 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UsingAliasInDeclaration_PrimitiveType(ReferenceType refType)
         {
-            var file1 = @"
-using System;
-using MyInt = System.Int32;
+            var file1 = """
+                using System;
+                using MyInt = System.Int32;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this MyInt x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this MyInt x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -209,31 +213,33 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UsingAliasInDeclaration_RegularType(ReferenceType refType)
         {
-            var file1 = @"
-using System;
-using MyAlias = System.Exception;
+            var file1 = """
+                using System;
+                using MyAlias = System.Exception;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this MyAlias x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this MyAlias x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(Exception x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(Exception x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -247,31 +253,33 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UsingAliasInDeclaration_GenericType(ReferenceType refType)
         {
-            var file1 = @"
-using System;
-using MyAlias = System.Collections.Generic.List<int>;
+            var file1 = """
+                using System;
+                using MyAlias = System.Collections.Generic.List<int>;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this MyAlias x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this MyAlias x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(System.Collections.Generic.List<int> x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(System.Collections.Generic.List<int> x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -285,30 +293,32 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UsingAliasInDeclaration_RegularTypeWithSameSimpleName(ReferenceType refType)
         {
-            var file1 = @"
-using DataTime = System.Exception;
+            var file1 = """
+                using DataTime = System.Exception;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this System.DateTime x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this System.DateTime x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(DateTime x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(DateTime x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -322,31 +332,33 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UsingAliasInDeclaration_Namespace(ReferenceType refType)
         {
-            var file1 = @"
-using System;
-using GenericCollection = System.Collections.Generic;
+            var file1 = """
+                using System;
+                using GenericCollection = System.Collections.Generic;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod<T>(this GenericCollection.List<T> x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod<T>(this GenericCollection.List<T> x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(System.Collections.Generic.List<int> x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(System.Collections.Generic.List<int> x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -361,31 +373,33 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UsingAliasInUsage(ReferenceType refType)
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this int x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
-using MyInt = System.Int32;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this int x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
+                using MyInt = System.Int32;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(MyInt x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(MyInt x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -412,19 +426,20 @@ public static bool ExtentionMethod(this MyType t)
             => true;
     }}
 }}";
-            var file2 = @"
-using System;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(MyType x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(MyType x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
             await VerifyImportItemExistsAsync(
                  markup,
@@ -450,19 +465,20 @@ public static bool ExtentionMethod(this object t)
             => true;
     }}
 }}";
-            var file2 = @"
-using System;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(MyType x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(MyType x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
             await VerifyImportItemExistsAsync(
                  markup,
@@ -537,19 +553,20 @@ public static bool ExtentionMethod(this MyBase t)
             => true;
     }}
 }}";
-            var file2 = @"
-using System;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(MyType x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(MyType x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
             await VerifyImportItemExistsAsync(
                  markup,
@@ -570,18 +587,19 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task BoundedGenericType(string type, ReferenceType refType)
         {
-            var file1 = @"
-using System;
-using System.Collections.Generic;
+            var file1 = """
+                using System;
+                using System.Collections.Generic;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this IEnumerable<string> t)
-            => true;
-    }
-}";
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this IEnumerable<string> t)
+                            => true;
+                    }
+                }
+                """;
             var file2 = $@"
 using System;
 using System.Collections.Generic;
@@ -616,17 +634,18 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task MatchingTypeParameter(string type, ReferenceType refType)
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod<T>(this T t)
-            => true;
-    }
-}";
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod<T>(this T t)
+                            => true;
+                    }
+                }
+                """;
             var file2 = $@"
 using System;
 using System.Collections.Generic;
@@ -657,30 +676,32 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task TestInternalExtensionMethods_NoIVT_InReference(ReferenceType refType)
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    internal static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this int x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    internal static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this int x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = GetMarkup(file2, file1, refType);
             await VerifyImportItemIsAbsentAsync(
@@ -692,30 +713,32 @@ await VerifyImportItemIsAbsentAsync(
         [Fact]
         public async Task TestInternalExtensionMethods_NoIVT_InSameProject()
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    internal static class ExtensionClass
-    {
-        internal static bool ExtentionMethod(this int x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    internal static class ExtensionClass
+                    {
+                        internal static bool ExtentionMethod(this int x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = GetMarkup(file2, file1, ReferenceType.None);
             await VerifyImportItemExistsAsync(
@@ -731,28 +754,30 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task TestInternalExtensionMethods_WithIVT(ReferenceType refType)
         {
-            var file1 = @"
-[assembly: System.Runtime.CompilerServices.InternalsVisibleTo(""Project1"")]
+            var file1 = """
+                [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Project1")]
 
-namespace Foo
-{
-    internal static class ExtensionClass
-    {
-        internal static bool ExtentionMethod(this int x)
-            => true;
-    }
-}";
-            var file2 = @"
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Foo
+                {
+                    internal static class ExtensionClass
+                    {
+                        internal static bool ExtentionMethod(this int x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = GetMarkup(file2, file1, refType);
             await VerifyImportItemExistsAsync(
@@ -766,34 +791,36 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task UserDefinedGenericType(ReferenceType refType)
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-public class MyGeneric<T>
-{
-}
+                public class MyGeneric<T>
+                {
+                }
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this MyGeneric<int> x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this MyGeneric<int> x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(MyGeneric<int> x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(MyGeneric<int> x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, refType);
 
             await VerifyImportItemExistsAsync(
@@ -808,17 +835,18 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task MethodSymbolReceiver(string expression)
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtentionMethod(this int x)
-            => true;
-    }
-}";
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod(this int x)
+                            => true;
+                    }
+                }
+                """;
             var file2 = $@"
 using System;
 
@@ -911,29 +939,31 @@ await VerifyImportItemExistsAsync(
         [Fact]
         public async Task ExtensionMethodDelcaredInRootNamespaceVBSource()
         {
-            var file1 = @"
-Imports System
-Imports System.Runtime.CompilerServices
-
-Public Module Foo
-    <Extension>
-    public Function ExtentionMethod(x As Integer) As Boolean
-        Return True
-    End Function
-End Module";
-            var file2 = @"
-using System;
-
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+            var file1 = """
+                Imports System
+                Imports System.Runtime.CompilerServices
+
+                Public Module Foo
+                    <Extension>
+                    public Function ExtentionMethod(x As Integer) As Boolean
+                        Return True
+                    End Function
+                End Module
+                """;
+            var file2 = """
+                using System;
+
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = CreateMarkupForProjecWithVBProjectReference(file2, file1, sourceLanguage: LanguageNames.CSharp, rootNamespace: "Root");
 
             await VerifyImportItemExistsAsync(
@@ -946,29 +976,31 @@ await VerifyImportItemExistsAsync(
         [Fact]
         public async Task ExtensionMethodDelcaredInGlobalNamespaceVBSource()
         {
-            var file1 = @"
-Imports System
-Imports System.Runtime.CompilerServices
-
-Public Module Foo
-    <Extension>
-    public Function ExtentionMethod(x As Integer) As Boolean
-        Return True
-    End Function
-End Module";
-            var file2 = @"
-using System;
-
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+            var file1 = """
+                Imports System
+                Imports System.Runtime.CompilerServices
+
+                Public Module Foo
+                    <Extension>
+                    public Function ExtentionMethod(x As Integer) As Boolean
+                        Return True
+                    End Function
+                End Module
+                """;
+            var file2 = """
+                using System;
+
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
             var markup = CreateMarkupForProjecWithVBProjectReference(file2, file1, sourceLanguage: LanguageNames.CSharp);
 
             await VerifyImportItemIsAbsentAsync(
@@ -980,31 +1012,33 @@ await VerifyImportItemIsAbsentAsync(
         [Fact]
         public async Task TestTriggerLocation()
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    internal static class ExtensionClass
-    {
-        internal static bool ExtentionMethod(this int x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    internal static class ExtensionClass
+                    {
+                        internal static bool ExtentionMethod(this int x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-            var z = 10;
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                            var z = 10;
+                        }
+                    }
+                }
+                """;
 
             var markup = GetMarkup(file2, file1, ReferenceType.None);
             await VerifyImportItemExistsAsync(
@@ -1019,29 +1053,29 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task TestIdenticalAliases(string type, string expectedMethodname, string expectedNamespace)
         {
-            var file1 = @"
-using X = System.String;
+            var file1 = """
+                using X = System.String;
 
-namespace Foo
-{
-    using X = System.Int32;
+                namespace Foo
+                {
+                    using X = System.Int32;
 
-    internal static class ExtensionClass
-    {
-        internal static bool Int32Method(this X x)
-            => true;
-    }
-}
+                    internal static class ExtensionClass
+                    {
+                        internal static bool Int32Method(this X x)
+                            => true;
+                    }
+                }
 
-namespace Bar
-{
-    internal static class ExtensionClass
-    {
-        internal static bool StringMethod(this X x)
-            => true;
-    }
-}
-";
+                namespace Bar
+                {
+                    internal static class ExtensionClass
+                    {
+                        internal static bool StringMethod(this X x)
+                            => true;
+                    }
+                }
+                """;
             var file2 = $@"
 using System;
 
@@ -1069,21 +1103,21 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task TestIdenticalMethodName(string type)
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtMethod(this int x)
-            => true;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtMethod(this int x)
+                            => true;
 
-        public static bool ExtMethod(this Exception x)
-            => true;
-    }
-}
-";
+                        public static bool ExtMethod(this Exception x)
+                            => true;
+                    }
+                }
+                """;
             var file2 = $@"
 using System;
 
@@ -1109,30 +1143,32 @@ await VerifyImportItemExistsAsync(
         [Fact]
         public async Task DoNotTriggerOnType()
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    public static class ExtensionClass
-    {
-        public static bool ExtMethod(this string x)
-            => true;
-    }
-}";
-            var file2 = @"
-using System;
+                namespace Foo
+                {
+                    public static class ExtensionClass
+                    {
+                        public static bool ExtMethod(this string x)
+                            => true;
+                    }
+                }
+                """;
+            var file2 = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M()
-        {
-            string.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M()
+                        {
+                            string.$$
+                        }
+                    }
+                }
+                """;
             var markup = GetMarkup(file2, file1, ReferenceType.None);
             await VerifyImportItemIsAbsentAsync(
                  markup,
@@ -1143,39 +1179,41 @@ await VerifyImportItemIsAbsentAsync(
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42325")]
         public async Task TestExtensionMethodInPartialClass()
         {
-            var file1 = @"
-using System;
+            var file1 = """
+                using System;
 
-namespace Foo
-{
-    public static partial class ExtensionClass
-    {
-        public static bool ExtentionMethod1(this string x)
-            => true;
-    }
-}";
-            var currentFile = @"
-using System;
+                namespace Foo
+                {
+                    public static partial class ExtensionClass
+                    {
+                        public static bool ExtentionMethod1(this string x)
+                            => true;
+                    }
+                }
+                """;
+            var currentFile = """
+                using System;
 
-namespace Foo
-{
-    public static partial class ExtensionClass
-    {
-        public static bool ExtentionMethod2(this string x)
-            => true;
-    }
-}
+                namespace Foo
+                {
+                    public static partial class ExtensionClass
+                    {
+                        public static bool ExtentionMethod2(this string x)
+                            => true;
+                    }
+                }
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(string x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(string x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = CreateMarkupForSingleProject(currentFile, file1, LanguageNames.CSharp);
 
@@ -1209,28 +1247,29 @@ public static bool ExtentionMethod1(this int x)
             => true;
     }}
 }}";
-            var srcDoc = @"
-using System;
+            var srcDoc = """
+                using System;
 
-namespace Foo
-{
-    internal static class ExtensionClass
-    {
-        public static bool ExtentionMethod2(this int x)
-            => true;
-    }
-}
+                namespace Foo
+                {
+                    internal static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod2(this int x)
+                            => true;
+                    }
+                }
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = refType switch
             {
@@ -1255,41 +1294,44 @@ await VerifyImportItemExistsAsync(
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42325")]
         public async Task TestExtensionMethodsInConflictingTypesFromReferencedProjects()
         {
-            var refDoc1 = @"
-[assembly: System.Runtime.CompilerServices.InternalsVisibleTo(""Project1"")]
+            var refDoc1 = """
+                [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Project1")]
 
-namespace Foo
-{
-    internal static class ExtensionClass
-    {
-        public static bool ExtentionMethod1(this int x)
-            => true;
-    }
-}";
-            var refDoc2 = @"
-[assembly: System.Runtime.CompilerServices.InternalsVisibleTo(""Project1"")]
+                namespace Foo
+                {
+                    internal static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod1(this int x)
+                            => true;
+                    }
+                }
+                """;
+            var refDoc2 = """
+                [assembly: System.Runtime.CompilerServices.InternalsVisibleTo("Project1")]
 
-namespace Foo
-{
-    internal static class ExtensionClass
-    {
-        public static bool ExtentionMethod2(this int x)
-            => true;
-    }
-}";
-            var srcDoc = @"
-using System;
+                namespace Foo
+                {
+                    internal static class ExtensionClass
+                    {
+                        public static bool ExtentionMethod2(this int x)
+                            => true;
+                    }
+                }
+                """;
+            var srcDoc = """
+                using System;
 
-namespace Baz
-{
-    public class Bat
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace Baz
+                {
+                    public class Bat
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = CreateMarkupForProjectWithMultupleProjectReferences(srcDoc, LanguageNames.CSharp, LanguageNames.CSharp, new[] { refDoc1, refDoc2 });
 
@@ -1484,32 +1526,34 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task TestGenericReceiverTypeWithConstraint(ReferenceType refType)
         {
-            var refDoc = @"
-using System;
+            var refDoc = """
+                using System;
 
-namespace NS1
-{
-    public class C1 {}
-}
+                namespace NS1
+                {
+                    public class C1 {}
+                }
 
-namespace NS2
-{
-    public static class Extensions
-    {
-        public static bool ExtentionMethod(this NS1.C1 c) => false;
-    }
-}";
-            var srcDoc = @"
-namespace NS1
-{
-    public class C2
-    {
-        public void M<T>(T x) where T : C1
-        {
-            x.$$
-        }
-    }
-}";
+                namespace NS2
+                {
+                    public static class Extensions
+                    {
+                        public static bool ExtentionMethod(this NS1.C1 c) => false;
+                    }
+                }
+                """;
+            var srcDoc = """
+                namespace NS1
+                {
+                    public class C2
+                    {
+                        public void M<T>(T x) where T : C1
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = refType switch
             {
@@ -1616,27 +1660,29 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task TestDescriptionOfGenericReceiverType(ReferenceType refType)
         {
-            var refDoc = @"
-using System;
+            var refDoc = """
+                using System;
 
-namespace NS2
-{
-    public static class Extensions
-    {
-        public static bool ExtentionMethod<T>(this T t) => false;
-    }
-}";
-            var srcDoc = @"
-namespace NS1
-{
-    public class C
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace NS2
+                {
+                    public static class Extensions
+                    {
+                        public static bool ExtentionMethod<T>(this T t) => false;
+                    }
+                }
+                """;
+            var srcDoc = """
+                namespace NS1
+                {
+                    public class C
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = refType switch
             {
@@ -1659,32 +1705,34 @@ await VerifyImportItemExistsAsync(
         [Theory]
         public async Task TestDescriptionOfOverloads(ReferenceType refType)
         {
-            var refDoc = @"
-using System;
+            var refDoc = """
+                using System;
 
-namespace NS2
-{
-    public static class Extensions
-    {
-        public static bool ExtentionMethod(this int t) => false;
-        public static bool ExtentionMethod(this int t, int a) => false;
-        public static bool ExtentionMethod(this int t, int a, int b) => false;
-        public static bool ExtentionMethod<T>(this int t, T a) => false;
-        public static bool ExtentionMethod<T>(this int t, T a, T b) => false;
-        public static bool ExtentionMethod<T1, T2>(this int t, T1 a, T2 b) => false;
-    }
-}";
-            var srcDoc = @"
-namespace NS1
-{
-    public class C
-    {
-        public void M(int x)
-        {
-            x.$$
-        }
-    }
-}";
+                namespace NS2
+                {
+                    public static class Extensions
+                    {
+                        public static bool ExtentionMethod(this int t) => false;
+                        public static bool ExtentionMethod(this int t, int a) => false;
+                        public static bool ExtentionMethod(this int t, int a, int b) => false;
+                        public static bool ExtentionMethod<T>(this int t, T a) => false;
+                        public static bool ExtentionMethod<T>(this int t, T a, T b) => false;
+                        public static bool ExtentionMethod<T1, T2>(this int t, T1 a, T2 b) => false;
+                    }
+                }
+                """;
+            var srcDoc = """
+                namespace NS1
+                {
+                    public class C
+                    {
+                        public void M(int x)
+                        {
+                            x.$$
+                        }
+                    }
+                }
+                """;
 
             var markup = refType switch
             {
@@ -1714,30 +1762,32 @@ await VerifyImportItemExistsAsync(
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/47551")]
         public async Task TestBrowsableAlways(ReferenceType refType)
         {
-            var srcDoc = @"
-class Program
-{
-    void M()
-    {
-        new Goo().$$
-    }
-}";
+            var srcDoc = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo().$$
+                    }
+                }
+                """;
 
-            var refDoc = @"
-public class Goo
-{
-}
+            var refDoc = """
+                public class Goo
+                {
+                }
 
-namespace Foo
-{
-    public static class GooExtensions
-    {
-        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
-        public static void Bar(this Goo goo, int x)
-        {
-        }
-    }
-}";
+                namespace Foo
+                {
+                    public static class GooExtensions
+                    {
+                        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
+                        public static void Bar(this Goo goo, int x)
+                        {
+                        }
+                    }
+                }
+                """;
 
             var markup = refType switch
             {
@@ -1758,30 +1808,32 @@ await VerifyImportItemExistsAsync(
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/47551")]
         public async Task TestBrowsableNever(ReferenceType refType)
         {
-            var srcDoc = @"
-class Program
-{
-    void M()
-    {
-        new Goo().$$
-    }
-}";
+            var srcDoc = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo().$$
+                    }
+                }
+                """;
 
-            var refDoc = @"
-public class Goo
-{
-}
+            var refDoc = """
+                public class Goo
+                {
+                }
 
-namespace Foo
-{
-    public static class GooExtensions
-    {
-        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-        public static void Bar(this Goo goo, int x)
-        {
-        }
-    }
-}";
+                namespace Foo
+                {
+                    public static class GooExtensions
+                    {
+                        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                        public static void Bar(this Goo goo, int x)
+                        {
+                        }
+                    }
+                }
+                """;
 
             var (markup, shouldContainItem) = refType switch
             {
@@ -1816,30 +1868,32 @@ public async Task TestBrowsableAdvanced(ReferenceType refType, bool hideAdvanced
         {
             HideAdvancedMembers = hideAdvanced;
 
-            var srcDoc = @"
-class Program
-{
-    void M()
-    {
-        new Goo().$$
-    }
-}";
+            var srcDoc = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo().$$
+                    }
+                }
+                """;
 
-            var refDoc = @"
-public class Goo
-{
-}
+            var refDoc = """
+                public class Goo
+                {
+                }
 
-namespace Foo
-{
-    public static class GooExtensions
-    {
-        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
-        public static void Bar(this Goo goo, int x)
-        {
-        }
-    }
-}";
+                namespace Foo
+                {
+                    public static class GooExtensions
+                    {
+                        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
+                        public static void Bar(this Goo goo, int x)
+                        {
+                        }
+                    }
+                }
+                """;
 
             var (markup, shouldContainItem) = (refType, hideAdvanced) switch
             {
@@ -1871,57 +1925,59 @@ await VerifyImportItemIsAbsentAsync(
         [InlineData(';')]
         public async Task TestCommitWithCustomizedCharForMethod(char commitChar)
         {
-            var markup = @"
-public class C
-{
-}
-namespace AA
-{
-    public static class Ext
-    {
-        public static int ToInt(this C c)
-            => 1;
-    }
-}
+            var markup = """
+                public class C
+                {
+                }
+                namespace AA
+                {
+                    public static class Ext
+                    {
+                        public static int ToInt(this C c)
+                            => 1;
+                    }
+                }
 
-namespace BB
-{
-    public class B
-    {
-        public void M()
-        {
-            var c = new C();
-            c.$$
-        }
-    }
-}";
+                namespace BB
+                {
+                    public class B
+                    {
+                        public void M()
+                        {
+                            var c = new C();
+                            c.$$
+                        }
+                    }
+                }
+                """;
 
-            var expected = $@"
-using AA;
+            var expected = $$"""
+            using AA;
 
-public class C
-{{
-}}
-namespace AA
-{{
-    public static class Ext
-    {{
-        public static int ToInt(this C c)
-            => 1;
-    }}
-}}
+            public class C
+            {
+            }
+            namespace AA
+            {
+                public static class Ext
+                {
+                    public static int ToInt(this C c)
+                        => 1;
+                }
+            }
 
-namespace BB
-{{
-    public class B
-    {{
-        public void M()
-        {{
-            var c = new C();
-            c.ToInt(){commitChar}
-        }}
-    }}
-}}";
+            namespace BB
+            {
+                public class B
+                {
+                    public void M()
+                    {
+                        var c = new C();
+                        c.ToInt(){{commitChar}}
+                    }
+                }
+            }
+            """;
             await VerifyProviderCommitAsync(markup, "ToInt", expected, commitChar: commitChar, sourceCodeKind: SourceCodeKind.Regular);
         }
 
@@ -1931,18 +1987,19 @@ public void M()
         [Theory]
         public async Task TestTargetTypedCompletion(string targetType, bool matchTargetType, string expectedParameterList)
         {
-            var refDoc = @"
-using System;
+            var refDoc = """
+                using System;
 
-namespace NS2
-{
-    public static class Extensions
-    {
-        public static int ExtentionMethod(this int t, int a) => 0;
-        public static int[] ExtentionMethod(this int t, int a, int b) => null;
-        public static string ExtentionMethod(this int t, int a, int b, int c) => false;
-    }
-}";
+                namespace NS2
+                {
+                    public static class Extensions
+                    {
+                        public static int ExtentionMethod(this int t, int a) => 0;
+                        public static int[] ExtentionMethod(this int t, int a, int b) => null;
+                        public static string ExtentionMethod(this int t, int a, int b, int c) => false;
+                    }
+                }
+                """;
             var srcDoc = $@"
 namespace NS1
 {{
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExternAliasCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExternAliasCompletionProviderTests.cs
index 34be841188ecd..60cab4230ab8b 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExternAliasCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ExternAliasCompletionProviderTests.cs
@@ -22,51 +22,57 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task NoAliases()
         {
-            await VerifyNoItemsExistAsync(@"
-extern alias $$
-class C
-{
-}");
+            await VerifyNoItemsExistAsync("""
+                extern alias $$
+                class C
+                {
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44423")]
         public async Task ExternAlias()
         {
-            var markup = @"
-extern alias $$ ";
+            var markup = """
+                extern alias $$
+                """;
             await VerifyItemWithAliasedMetadataReferencesAsync(markup, "goo", "goo", 1, "C#", "C#");
         }
 
         [Fact]
         public async Task NotAfterExternAlias()
         {
-            var markup = @"
-extern alias goo $$ ";
+            var markup = """
+                extern alias goo $$
+                """;
             await VerifyItemWithAliasedMetadataReferencesAsync(markup, "goo", "goo", 0, "C#", "C#");
         }
 
         [Fact]
         public async Task NotGlobal()
         {
-            var markup = @"
-extern alias $$ ";
+            var markup = """
+                extern alias $$
+                """;
             await VerifyItemWithAliasedMetadataReferencesAsync(markup, "goo", "global", 0, "C#", "C#");
         }
 
         [Fact]
         public async Task NotIfAlreadyUsed()
         {
-            var markup = @"
-extern alias goo;
-extern alias $$";
+            var markup = """
+                extern alias goo;
+                extern alias $$
+                """;
             await VerifyItemWithAliasedMetadataReferencesAsync(markup, "goo", "goo", 0, "C#", "C#");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1075278")]
         public async Task NotInComment()
         {
-            var markup = @"
-extern alias // $$ ";
+            var markup = """
+                extern alias // $$
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/FunctionPointerUnmanagedCallingConventionCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/FunctionPointerUnmanagedCallingConventionCompletionProviderTests.cs
index 899f35ff449b6..bb8448ffa15f6 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/FunctionPointerUnmanagedCallingConventionCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/FunctionPointerUnmanagedCallingConventionCompletionProviderTests.cs
@@ -20,32 +20,34 @@ public class FunctionPointerUnmanagedCallingConventionCompletionProviderTests :
         [Fact]
         public async Task TypeFound()
         {
-            var markup = @"
-namespace System.Runtime.CompilerServices
-{
-    public class CallConvUnitTest { }
-}
+            var markup = """
+                namespace System.Runtime.CompilerServices
+                {
+                    public class CallConvUnitTest { }
+                }
 
-class C
-{
-    delegate* unmanaged[$$] <int, string> f;
-}";
+                class C
+                {
+                    delegate* unmanaged[$$] <int, string> f;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "UnitTest");
         }
 
         [Fact]
         public async Task TypeFoundSecondCallingConvention()
         {
-            var markup = @"
-namespace System.Runtime.CompilerServices
-{
-    public class CallConvUnitTest { }
-}
+            var markup = """
+                namespace System.Runtime.CompilerServices
+                {
+                    public class CallConvUnitTest { }
+                }
 
-class C
-{
-    delegate* unmanaged[Thiscall, $$] <int, string> f;
-}";
+                class C
+                {
+                    delegate* unmanaged[Thiscall, $$] <int, string> f;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "UnitTest");
         }
 
@@ -58,17 +60,18 @@ public async Task PredefinedCallingConventionFound(string callingConvention)
         {
             // We explicitly create a project with no references (not even common references) to ensure we
             // get the defaults
-            var markup = @"
-<Workspace>
-    <Project Language=""C#"">
-        <Document>
-    class C
-    {
-        delegate* unmanaged[$$] &lt;int, string&gt; f;
-    }
-        </Document>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#">
+                        <Document>
+                    class C
+                    {
+                        delegate* unmanaged[$$] &lt;int, string&gt; f;
+                    }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
             await VerifyItemExistsAsync(markup, callingConvention, glyph: (int)Glyph.Keyword);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/IndexerCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/IndexerCompletionProviderTests.cs
index fa3e2ca9d86e8..3b04c90a596ea 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/IndexerCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/IndexerCompletionProviderTests.cs
@@ -23,142 +23,142 @@ internal override Type GetCompletionProviderType()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerIsSuggestedAfterDot()
         {
-            await VerifyItemExistsAsync(@"
-public class C
-{
-    public int this[int i] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-", "this", displayTextSuffix: "[]", matchingFilters: new List<CompletionFilter> { FilterSet.PropertyFilter });
+            await VerifyItemExistsAsync("""
+                public class C
+                {
+                    public int this[int i] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """, "this", displayTextSuffix: "[]", matchingFilters: new List<CompletionFilter> { FilterSet.PropertyFilter });
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerIsSuggestedAfterDotForString()
         {
-            await VerifyItemExistsAsync(@"
-public class Program
-{
-    public static void Main(string s)
-    {
-        s.$$
-    }
-}
-", "this", displayTextSuffix: "[]", matchingFilters: new List<CompletionFilter> { FilterSet.PropertyFilter });
+            await VerifyItemExistsAsync("""
+                public class Program
+                {
+                    public static void Main(string s)
+                    {
+                        s.$$
+                    }
+                }
+                """, "this", displayTextSuffix: "[]", matchingFilters: new List<CompletionFilter> { FilterSet.PropertyFilter });
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerIsNotSuggestedOnStaticAccess()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public int this[int i] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        C.$$
-    }
-}
-");
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public int this[int i] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        C.$$
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerIsNotSuggestedInNameOfContext()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public int this[int i] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        var name = nameof(c.$$
-    }
-}
-");
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public int this[int i] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        var name = nameof(c.$$
+                    }
+                }
+                """);
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerSuggestionCommitsOpenAndClosingBraces()
         {
-            await VerifyCustomCommitProviderAsync(@"
-public class C
-{
-    public int this[int i] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-", "this", @"
-public class C
-{
-    public int this[int i] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c[$$]
-    }
-}
-");
+            await VerifyCustomCommitProviderAsync("""
+                public class C
+                {
+                    public int this[int i] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """, "this", """
+                public class C
+                {
+                    public int this[int i] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c[$$]
+                    }
+                }
+                """);
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerWithTwoParametersSuggestionCommitsOpenAndClosingBraces()
         {
-            await VerifyCustomCommitProviderAsync(@"
-public class C
-{
-    public int this[int x, int y] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-", "this", @"
-public class C
-{
-    public int this[int x, int y] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c[$$]
-    }
-}
-");
+            await VerifyCustomCommitProviderAsync("""
+                public class C
+                {
+                    public int this[int x, int y] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """, "this", """
+                public class C
+                {
+                    public int this[int x, int y] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c[$$]
+                    }
+                }
+                """);
         }
 
         [WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
@@ -262,125 +262,125 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerDescriptionIncludesDocCommentsAndOverloadsHint()
         {
-            await VerifyItemExistsAsync(@"
-public class C
-{
-    /// <summary>
-    /// Returns the index <paramref name=""i""/>
-    /// </summary>
-    /// <param name=""i"">The index</param>
-    /// <returns>Returns the index <paramref name=""i""/></returns>
-    public int this[int i] => i;
-
-    /// <summary>
-    /// Returns 1
-    /// </summary>
-    /// <param name=""i"">The index</param>
-    /// <returns>Returns 1</returns>
-    public int this[string s] => 1;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-", "this", displayTextSuffix: "[]", expectedDescriptionOrNull: @$"int C.this[int i] {{ get; }} (+ 1 {FeaturesResources.overload})
+            await VerifyItemExistsAsync("""
+                public class C
+                {
+                    /// <summary>
+                    /// Returns the index <paramref name="i"/>
+                    /// </summary>
+                    /// <param name="i">The index</param>
+                    /// <returns>Returns the index <paramref name="i"/></returns>
+                    public int this[int i] => i;
+
+                    /// <summary>
+                    /// Returns 1
+                    /// </summary>
+                    /// <param name="i">The index</param>
+                    /// <returns>Returns 1</returns>
+                    public int this[string s] => 1;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """, "this", displayTextSuffix: "[]", expectedDescriptionOrNull: @$"int C.this[int i] {{ get; }} (+ 1 {FeaturesResources.overload})
 Returns the index i");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerOfBaseTypeIsSuggestedAfterDot()
         {
-            await VerifyItemExistsAsync(@"
-public class Base
-{
-    public int this[int i] => i;
-}
-public class Derived : Base
-{
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var d = new Derived();
-        d.$$
-    }
-}
-", "this", displayTextSuffix: "[]");
+            await VerifyItemExistsAsync("""
+                public class Base
+                {
+                    public int this[int i] => i;
+                }
+                public class Derived : Base
+                {
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var d = new Derived();
+                        d.$$
+                    }
+                }
+                """, "this", displayTextSuffix: "[]");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerOfBaseTypeIsNotSuggestedIfNotAccessible()
         {
-            await VerifyNoItemsExistAsync(@"
-public class Base
-{
-    protected int this[int i] => i;
-}
-public class Derived : Base
-{
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var d = new Derived();
-        d.$$
-    }
-}
-");
+            await VerifyNoItemsExistAsync("""
+                public class Base
+                {
+                    protected int this[int i] => i;
+                }
+                public class Derived : Base
+                {
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var d = new Derived();
+                        d.$$
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerIsSuggestedOnString()
         {
-            await VerifyItemExistsAsync(@"
-public class Program
-{
-    public static void Main()
-    {
-        var s = ""Test"";
-        s.$$
-    }
-}
-", "this", displayTextSuffix: "[]");
+            await VerifyItemExistsAsync("""
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var s = "Test";
+                        s.$$
+                    }
+                }
+                """, "this", displayTextSuffix: "[]");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnIndexerIsRespected_EditorBrowsableStateNever()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var c = new C();
-            c.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class C
-    {
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public int this[int i] => i;
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var c = new C();
+                            c.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class C
+                    {
+                        [EditorBrowsable(EditorBrowsableState.Never)]
+                        public int this[int i] => i;
+                    }
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -395,31 +395,31 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnIndexerIsRespected_EditorBrowsableStateAdvanced()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var c = new C();
-            c.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class C
-    {
-        [EditorBrowsable(EditorBrowsableState.Advanced)]
-        public int this[int i] => i;
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var c = new C();
+                            c.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class C
+                    {
+                        [EditorBrowsable(EditorBrowsableState.Advanced)]
+                        public int this[int i] => i;
+                    }
+                }
+                """;
             HideAdvancedMembers = true;
 
             await VerifyItemInEditorBrowsableContextsAsync(
@@ -446,35 +446,35 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnIndexerIsRespected_EditorBrowsableStateNever_InheritedMember()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var d = new Derived();
-            d.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class Base
-    {
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public int this[int i] => i;
-    }
-    
-    public class Derived: Base
-    {
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var d = new Derived();
+                            d.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class Base
+                    {
+                        [EditorBrowsable(EditorBrowsableState.Never)]
+                        public int this[int i] => i;
+                    }
+
+                    public class Derived: Base
+                    {
+                    }
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -489,39 +489,39 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task IndexerNullForgivingOperatorHandling()
         {
-            await VerifyCustomCommitProviderAsync(@"
-#nullable enable
-
-public class C
-{
-    public int this[int i] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        C? c = null;
-        var i = c!.$$
-    }
-}
-", "this", @"
-#nullable enable
-
-public class C
-{
-    public int this[int i] => i;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        C? c = null;
-        var i = c![$$]
-    }
-}
-");
+            await VerifyCustomCommitProviderAsync("""
+                #nullable enable
+
+                public class C
+                {
+                    public int this[int i] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        C? c = null;
+                        var i = c!.$$
+                    }
+                }
+                """, "this", """
+                #nullable enable
+
+                public class C
+                {
+                    public int this[int i] => i;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        C? c = null;
+                        var i = c![$$]
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/KeywordCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/KeywordCompletionProviderTests.cs
index 56463771e638e..e819aa650de13 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/KeywordCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/KeywordCompletionProviderTests.cs
@@ -46,25 +46,27 @@ public async Task InEmptyFile()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInInactiveCode()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-#if false
-$$
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                #if false
+                $$
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInCharLiteral()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var c = '$$';
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var c = '$$';
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -72,11 +74,13 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInUnterminatedCharLiteral()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var c = '$$   ";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var c = '$$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -84,11 +88,13 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInUnterminatedCharLiteralAtEndOfFile()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var c = '$$";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var c = '$$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -96,12 +102,13 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInString()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var s = ""$$"";
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var s = "$$";
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -109,7 +116,9 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInStringInDirective()
         {
-            var markup = "#r \"$$\"";
+            var markup = """
+                #r "$$"
+                """;
 
             await VerifyNoItemsExistAsync(markup, SourceCodeKind.Script);
         }
@@ -117,11 +126,13 @@ public async Task NotInStringInDirective()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInUnterminatedString()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var s = ""$$   ";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var s = "$$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -129,7 +140,9 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInUnterminatedStringInDirective()
         {
-            var markup = "#r \"$$\"";
+            var markup = """
+                #r "$$"
+                """;
 
             await VerifyNoItemsExistAsync(markup, SourceCodeKind.Script);
         }
@@ -137,11 +150,13 @@ public async Task NotInUnterminatedStringInDirective()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInUnterminatedStringAtEndOfFile()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var s = ""$$";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var s = "$$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -149,14 +164,15 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInVerbatimString()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var s = @""
-$$
-"";
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var s = @"
+                $$
+                ";
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -164,13 +180,14 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInUnterminatedVerbatimString()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var s = @""
-$$
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var s = @"
+                $$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -178,11 +195,13 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInUnterminatedVerbatimStringAtEndOfFile()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        var s = @""$$";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var s = @"$$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -190,12 +209,13 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInSingleLineComment()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-        // $$
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        // $$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -203,9 +223,11 @@ void M()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInSingleLineCommentAtEndOfFile()
         {
-            var markup = @"namespace A
-{
-}// $$";
+            var markup = """
+                namespace A
+                {
+                }// $$
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -213,14 +235,15 @@ public async Task NotInSingleLineCommentAtEndOfFile()
         [Fact, Trait(Traits.Feature, Traits.Features.KeywordRecommending)]
         public async Task NotInMutliLineComment()
         {
-            var markup = @"class C
-{
-    void M()
-    {
-/*
-    $$
-*/
-";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                /*
+                    $$
+                */
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -229,28 +252,30 @@ void M()
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/968256")]
         public async Task UnionOfItemsFromBothContexts()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-class C
-{
-#if GOO
-    void goo() {
-#endif
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                class C
+                {
+                #if GOO
+                    void goo() {
+                #endif
 
-$$
+                $$
 
-#if GOO
-    }
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""CurrentDocument.cs""/>
-    </Project>
-</Workspace>";
+                #if GOO
+                    }
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="CurrentDocument.cs"/>
+                    </Project>
+                </Workspace>
+                """;
             await VerifyItemInLinkedFilesAsync(markup, "public", null);
             await VerifyItemInLinkedFilesAsync(markup, "for", null);
         }
@@ -260,17 +285,21 @@ void goo() {
         [WpfFact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task FormattingAfterCompletionCommit_AfterGetAccessorInSingleLineIncompleteProperty()
         {
-            var markupBeforeCommit = @"class Program
-{
-    int P {g$$
-    void Main() { }
-}";
+            var markupBeforeCommit = """
+                class Program
+                {
+                    int P {g$$
+                    void Main() { }
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"class Program
-{
-    int P {get;
-    void Main() { }
-}";
+            var expectedCodeAfterCommit = """
+                class Program
+                {
+                    int P {get;
+                    void Main() { }
+                }
+                """;
             await VerifyProviderCommitAsync(markupBeforeCommit, "get", expectedCodeAfterCommit, commitChar: ';');
         }
 
@@ -279,17 +308,21 @@ void Main() { }
         [WpfFact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task FormattingAfterCompletionCommit_AfterBothAccessorsInSingleLineIncompleteProperty()
         {
-            var markupBeforeCommit = @"class Program
-{
-    int P {get;set$$
-    void Main() { }
-}";
+            var markupBeforeCommit = """
+                class Program
+                {
+                    int P {get;set$$
+                    void Main() { }
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"class Program
-{
-    int P {get;set;
-    void Main() { }
-}";
+            var expectedCodeAfterCommit = """
+                class Program
+                {
+                    int P {get;set;
+                    void Main() { }
+                }
+                """;
             await VerifyProviderCommitAsync(markupBeforeCommit, "set", expectedCodeAfterCommit, commitChar: ';');
         }
 
@@ -298,17 +331,21 @@ void Main() { }
         [WpfFact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task FormattingAfterCompletionCommit_InSingleLineMethod()
         {
-            var markupBeforeCommit = @"class Program
-{
-    public static void Test() { return$$
-    void Main() { }
-}";
+            var markupBeforeCommit = """
+                class Program
+                {
+                    public static void Test() { return$$
+                    void Main() { }
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"class Program
-{
-    public static void Test() { return;
-    void Main() { }
-}";
+            var expectedCodeAfterCommit = """
+                class Program
+                {
+                    public static void Test() { return;
+                    void Main() { }
+                }
+                """;
             await VerifyProviderCommitAsync(markupBeforeCommit, "return", expectedCodeAfterCommit, commitChar: ';');
         }
 
@@ -316,18 +353,19 @@ void Main() { }
         [WpfFact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task PredefinedTypeKeywordsShouldBeRecommendedAfterCaseInASwitch()
         {
-            var text = @"
-class Program
-{
-    public static void Test()
-    {
-        object o = null;
-        switch (o)
-        {
-            case $$
-        }
-    }
-}";
+            var text = """
+                class Program
+                {
+                    public static void Test()
+                    {
+                        object o = null;
+                        switch (o)
+                        {
+                            case $$
+                        }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(text, "int");
             await VerifyItemExistsAsync(text, "string");
@@ -338,11 +376,12 @@ public static void Test()
         [WpfFact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task PrivateOrProtectedModifiers()
         {
-            var text = @"
-class C
-{
-$$
-}";
+            var text = """
+                class C
+                {
+                $$
+                }
+                """;
 
             await VerifyItemExistsAsync(text, "private");
             await VerifyItemExistsAsync(text, "protected");
@@ -351,11 +390,12 @@ class C
         [WpfFact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task PrivateProtectedModifier()
         {
-            var text = @"
-class C
-{
-    private $$
-}";
+            var text = """
+                class C
+                {
+                    private $$
+                }
+                """;
 
             await VerifyItemExistsAsync(text, "protected");
         }
@@ -363,11 +403,12 @@ class C
         [WpfFact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task ProtectedPrivateModifier()
         {
-            var text = @"
-class C
-{
-    protected $$
-}";
+            var text = """
+                class C
+                {
+                    protected $$
+                }
+                """;
 
             await VerifyItemExistsAsync(text, "private");
         }
@@ -377,10 +418,11 @@ class C
         public async Task DoNotSuggestEventAfterReadonlyInClass()
         {
             var markup =
-@"class C {
-    readonly $$
-}
-";
+                """
+                class C {
+                    readonly $$
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "event");
         }
 
@@ -389,10 +431,11 @@ public async Task DoNotSuggestEventAfterReadonlyInClass()
         public async Task DoNotSuggestEventAfterReadonlyInInterface()
         {
             var markup =
-@"interface C {
-    readonly $$
-}
-";
+                """
+                interface C {
+                    readonly $$
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "event");
         }
 
@@ -401,10 +444,11 @@ public async Task DoNotSuggestEventAfterReadonlyInInterface()
         public async Task SuggestEventAfterReadonlyInStruct()
         {
             var markup =
-@"struct C {
-    readonly $$
-}
-";
+                """
+                struct C {
+                    readonly $$
+                }
+                """;
             await VerifyItemExistsAsync(markup, "event");
         }
 
@@ -516,12 +560,13 @@ event System.Action E {{
         public async Task SuggestAccessorAfterReadonlyInStruct()
         {
             var markup =
-@"struct C {
-    int X {
-        readonly $$
-    }
-}
-";
+                """
+                struct C {
+                    int X {
+                        readonly $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "get");
             await VerifyItemExistsAsync(markup, "set");
             await VerifyItemIsAbsentAsync(markup, "void");
@@ -533,10 +578,11 @@ public async Task SuggestReadonlyMethodInStruct()
         {
 
             var markup =
-@"struct C {
-    public $$ void M() {}
-}
-";
+                """
+                struct C {
+                    public $$ void M() {}
+                }
+                """;
             await VerifyItemExistsAsync(markup, "readonly");
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/LoadDirectiveCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/LoadDirectiveCompletionProviderTests.cs
index 36ca14e0a5b58..8537d6a9138a2 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/LoadDirectiveCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/LoadDirectiveCompletionProviderTests.cs
@@ -68,10 +68,16 @@ public void IsTextualTriggerCharacterTest(string markup)
         [InlineData("#loa\"$$", false)]
         [InlineData("#load\"$$", true)]
         [InlineData(" # load \"$$", true)]
-        [InlineData(" # load \"$$\"", true)]
+        [InlineData("""
+            # load "$$"
+            """, true)]
         [InlineData(" # load \"\"$$", true)]
-        [InlineData("$$ # load \"\"", false)]
-        [InlineData(" # load $$\"\"", false)]
+        [InlineData("""
+            $$ # load ""
+            """, false)]
+        [InlineData("""
+            # load $$""
+            """, false)]
         public void ShouldTriggerCompletion(string textWithPositionMarker, bool expectedResult)
         {
             var position = textWithPositionMarker.IndexOf("$$");
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/NamedParameterCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/NamedParameterCompletionProviderTests.cs
index 46d3a7fc0bc29..c5fc983cd0d24 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/NamedParameterCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/NamedParameterCompletionProviderTests.cs
@@ -22,17 +22,18 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task SendEnterThroughToEditorTest()
         {
-            const string markup = @"
-class Goo
-{
-    public Goo(int a = 42)
-    { }
-
-    void Bar()
-    {
-        var b = new Goo($$
-    }
-}";
+            const string markup = """
+                class Goo
+                {
+                    public Goo(int a = 42)
+                    { }
+
+                    void Bar()
+                    {
+                        var b = new Goo($$
+                    }
+                }
+                """;
 
             await VerifySendEnterThroughToEnterAsync(markup, "a:", sendThroughEnterOption: EnterKeyRule.Never, expected: false);
             await VerifySendEnterThroughToEnterAsync(markup, "a:", sendThroughEnterOption: EnterKeyRule.AfterFullyTypedWord, expected: true);
@@ -42,17 +43,18 @@ void Bar()
         [Fact]
         public async Task CommitCharacterTest()
         {
-            const string markup = @"
-class Goo
-{
-    public Goo(int a = 42)
-    { }
-
-    void Bar()
-    {
-        var b = new Goo($$
-    }
-}";
+            const string markup = """
+                class Goo
+                {
+                    public Goo(int a = 42)
+                    { }
+
+                    void Bar()
+                    {
+                        var b = new Goo($$
+                    }
+                }
+                """;
 
             await VerifyCommonCommitCharactersAsync(markup, textTypedSoFar: "");
         }
@@ -60,17 +62,18 @@ void Bar()
         [Fact]
         public async Task InObjectCreation()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a = 42)
-    { }
-
-    void Bar()
-    {
-        var b = new Goo($$
-    }
-}";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a = 42)
+                    { }
+
+                    void Bar()
+                    {
+                        var b = new Goo($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "a", displayTextSuffix: ":");
         }
@@ -78,18 +81,18 @@ void Bar()
         [Fact]
         public async Task InBaseConstructor()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a = 42)
-    { }
-}
-
-class DogBed : Goo
-{
-    public DogBed(int b) : base($$
-}
-";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a = 42)
+                    { }
+                }
+
+                class DogBed : Goo
+                {
+                    public DogBed(int b) : base($$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "a", displayTextSuffix: ":");
         }
@@ -97,15 +100,15 @@ public DogBed(int b) : base($$
         [Fact]
         public async Task InvocationExpression()
         {
-            var markup = @"
-class Goo
-{
-    void Bar(int a)
-    {
-        Bar($$
-    }
-}
-";
+            var markup = """
+                class Goo
+                {
+                    void Bar(int a)
+                    {
+                        Bar($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "a", displayTextSuffix: ":");
         }
@@ -113,15 +116,15 @@ void Bar(int a)
         [Fact]
         public async Task InvocationExpressionAfterComma()
         {
-            var markup = @"
-class Goo
-{
-    void Bar(int a, string b)
-    {
-        Bar(b:"""", $$
-    }
-}
-";
+            var markup = """
+                class Goo
+                {
+                    void Bar(int a, string b)
+                    {
+                        Bar(b:"", $$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "a", displayTextSuffix: ":");
         }
@@ -129,32 +132,32 @@ void Bar(int a, string b)
         [Fact]
         public async Task ElementAccessExpression()
         {
-            var markup = @"
-class SampleCollection<T>
-{
-    private T[] arr = new T[100];
-    public T this[int i]
-    {
-        get
-        {
-            return arr[i];
-        }
-        set
-        {
-            arr[i] = value;
-        }
-    }
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        SampleCollection<string> stringCollection = new SampleCollection<string>();
-        stringCollection[$$
-    }
-}
-";
+            var markup = """
+                class SampleCollection<T>
+                {
+                    private T[] arr = new T[100];
+                    public T this[int i]
+                    {
+                        get
+                        {
+                            return arr[i];
+                        }
+                        set
+                        {
+                            arr[i] = value;
+                        }
+                    }
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        SampleCollection<string> stringCollection = new SampleCollection<string>();
+                        stringCollection[$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "i", displayTextSuffix: ":");
         }
@@ -162,19 +165,19 @@ static void Main(string[] args)
         [Fact]
         public async Task PartialMethods()
         {
-            var markup = @"
-partial class PartialClass
-{
-    static partial void Goo(int declaring);
-    static partial void Goo(int implementing)
-    {
-    }
-    static void Caller()
-    {
-        Goo($$
-    }
-}
-";
+            var markup = """
+                partial class PartialClass
+                {
+                    static partial void Goo(int declaring);
+                    static partial void Goo(int implementing)
+                    {
+                    }
+                    static void Caller()
+                    {
+                        Goo($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "declaring", displayTextSuffix: ":");
             await VerifyItemIsAbsentAsync(markup, "implementing", displayTextSuffix: ":");
@@ -183,19 +186,19 @@ static void Caller()
         [Fact]
         public async Task ExtendedPartialMethods()
         {
-            var markup = @"
-partial class PartialClass
-{
-    public static partial void Goo(int declaring);
-    public static partial void Goo(int implementing)
-    {
-    }
-    static void Caller()
-    {
-        Goo($$
-    }
-}
-";
+            var markup = """
+                partial class PartialClass
+                {
+                    public static partial void Goo(int declaring);
+                    public static partial void Goo(int implementing)
+                    {
+                    }
+                    static void Caller()
+                    {
+                        Goo($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "declaring", displayTextSuffix: ":");
             await VerifyItemIsAbsentAsync(markup, "implementing", displayTextSuffix: ":");
@@ -204,15 +207,15 @@ static void Caller()
         [Fact]
         public async Task NotAfterColon()
         {
-            var markup = @"
-class Goo
-{
-    void Bar(int a, string b)
-    {
-        Bar(a:$$ 
-    }
-}
-";
+            var markup = """
+                class Goo
+                {
+                    void Bar(int a, string b)
+                    {
+                        Bar(a:$$ 
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -220,16 +223,16 @@ void Bar(int a, string b)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544292")]
         public async Task NotInCollectionInitializers()
         {
-            var markup = @"
-using System.Collections.Generic;
-class Goo
-{
-    void Bar(List<int> integers)
-    {
-        Bar(integers: new List<int> { 10, 11,$$ 12 });
-    }
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class Goo
+                {
+                    void Bar(List<int> integers)
+                    {
+                        Bar(integers: new List<int> { 10, 11,$$ 12 });
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -237,21 +240,21 @@ void Bar(List<int> integers)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544191")]
         public async Task FilteringOverloadsByCallSite()
         {
-            var markup = @"
-class Class1
-{
-    void Test()
-    {
-        Goo(boolean:true, $$)
-    }
- 
-    void Goo(string str = ""hello"", char character = 'a')
-    { }
- 
-    void Goo(string str = ""hello"", bool boolean = false)
-    { }
-}
-";
+            var markup = """
+                class Class1
+                {
+                    void Test()
+                    {
+                        Goo(boolean:true, $$)
+                    }
+
+                    void Goo(string str = "hello", char character = 'a')
+                    { }
+
+                    void Goo(string str = "hello", bool boolean = false)
+                    { }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "str", displayTextSuffix: ":");
             await VerifyItemIsAbsentAsync(markup, "character", displayTextSuffix: ":");
@@ -260,21 +263,21 @@ void Goo(string str = ""hello"", bool boolean = false)
         [Fact]
         public async Task DoNotFilterYet()
         {
-            var markup = @"
-class Class1
-{
-    void Test()
-    {
-        Goo(str:"""", $$)
-    }
- 
-    void Goo(string str = ""hello"", char character = 'a')
-    { }
- 
-    void Goo(string str = ""hello"", bool boolean = false)
-    { }
-}
-";
+            var markup = """
+                class Class1
+                {
+                    void Test()
+                    {
+                        Goo(str:"", $$)
+                    }
+
+                    void Goo(string str = "hello", char character = 'a')
+                    { }
+
+                    void Goo(string str = "hello", bool boolean = false)
+                    { }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "boolean", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "character", displayTextSuffix: ":");
@@ -283,30 +286,30 @@ void Goo(string str = ""hello"", bool boolean = false)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544191")]
         public async Task FilteringOverloadsByCallSiteComplex()
         {
-            var markup = @"
-class Goo
-{
-    void Test()
-    {
-        Bar m = new Bar();
-        Method(obj:m, $$
-    }
-
-    void Method(Bar obj, int num = 23, string str = """")
-    {
-    }
-    void Method(double dbl = double.MinValue, string str = """")
-    {
-    }
-    void Method(int num = 1, bool b = false, string str = """")
-    {
-    }
-    void Method(Bar obj, bool b = false, string str = """")
-    {
-    }
-}
-class Bar { }
-";
+            var markup = """
+                class Goo
+                {
+                    void Test()
+                    {
+                        Bar m = new Bar();
+                        Method(obj:m, $$
+                    }
+
+                    void Method(Bar obj, int num = 23, string str = "")
+                    {
+                    }
+                    void Method(double dbl = double.MinValue, string str = "")
+                    {
+                    }
+                    void Method(int num = 1, bool b = false, string str = "")
+                    {
+                    }
+                    void Method(Bar obj, bool b = false, string str = "")
+                    {
+                    }
+                }
+                class Bar { }
+                """;
             await VerifyItemExistsAsync(markup, "str", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "num", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "b", displayTextSuffix: ":");
@@ -316,26 +319,26 @@ class Bar { }
         [Fact]
         public async Task MethodOverloads()
         {
-            var markup = @"
-class Goo
-{
-    void Test()
-    {
-        object m = null;
-        Method(m, $$
-    }
-
-    void Method(object obj, int num = 23, string str = """")
-    {
-    }
-    void Method(int num = 1, bool b = false, string str = """")
-    {
-    }
-    void Method(object obj, bool b = false, string str = """")
-    {
-    }
-}
-";
+            var markup = """
+                class Goo
+                {
+                    void Test()
+                    {
+                        object m = null;
+                        Method(m, $$
+                    }
+
+                    void Method(object obj, int num = 23, string str = "")
+                    {
+                    }
+                    void Method(int num = 1, bool b = false, string str = "")
+                    {
+                    }
+                    void Method(object obj, bool b = false, string str = "")
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "str", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "num", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "b", displayTextSuffix: ":");
@@ -344,29 +347,29 @@ void Method(object obj, bool b = false, string str = """")
         [Fact]
         public async Task ExistingNamedParamsAreFilteredOut()
         {
-            var markup = @"
-class Goo
-{
-    void Test()
-    {
-        object m = null;
-        Method(obj: m, str: """", $$);
-    }
-
-    void Method(object obj, int num = 23, string str = """")
-    {
-    }
-    void Method(double dbl = double.MinValue, string str = """")
-    {
-    }
-    void Method(int num = 1, bool b = false, string str = """")
-    {
-    }
-    void Method(object obj, bool b = false, string str = """")
-    {
-    }
-}
-";
+            var markup = """
+                class Goo
+                {
+                    void Test()
+                    {
+                        object m = null;
+                        Method(obj: m, str: "", $$);
+                    }
+
+                    void Method(object obj, int num = 23, string str = "")
+                    {
+                    }
+                    void Method(double dbl = double.MinValue, string str = "")
+                    {
+                    }
+                    void Method(int num = 1, bool b = false, string str = "")
+                    {
+                    }
+                    void Method(object obj, bool b = false, string str = "")
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "num", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "b", displayTextSuffix: ":");
             await VerifyItemIsAbsentAsync(markup, "obj", displayTextSuffix: ":");
@@ -376,36 +379,36 @@ void Method(object obj, bool b = false, string str = """")
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/529369")]
         public async Task VerbatimIdentifierNotAKeyword()
         {
-            var markup = @"
-class Program
-{
-    void Goo(int @integer)
-    {
-        Goo(@i$$
-    }
-}
-";
+            var markup = """
+                class Program
+                {
+                    void Goo(int @integer)
+                    {
+                        Goo(@i$$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "integer", displayTextSuffix: ":");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544209")]
         public async Task DescriptionStringInMethodOverloads()
         {
-            var markup = @"
-class Class1
-{
-    void Test()
-    {
-        Goo(boolean: true, $$)
-    }
- 
-    void Goo(string obj = ""hello"")
-    { }
- 
-    void Goo(bool boolean = false, Class1 obj = default(Class1))
-    { }
-}
-";
+            var markup = """
+                class Class1
+                {
+                    void Test()
+                    {
+                        Goo(boolean: true, $$)
+                    }
+
+                    void Goo(string obj = "hello")
+                    { }
+
+                    void Goo(bool boolean = false, Class1 obj = default(Class1))
+                    { }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "obj", displayTextSuffix: ":",
                 expectedDescriptionOrNull: $"({FeaturesResources.parameter}) Class1 obj = default(Class1)");
         }
@@ -413,111 +416,113 @@ await VerifyItemExistsAsync(markup, "obj", displayTextSuffix: ":",
         [Fact]
         public async Task InDelegates()
         {
-            var markup = @"
-public delegate void Del(string message);
-
-class Program
-{
-    public static void DelegateMethod(string message)
-    {
-        System.Console.WriteLine(message);
-    }
-
-    static void Main(string[] args)
-    {
-        Del handler = DelegateMethod;
-        handler($$
-    }
-}";
+            var markup = """
+                public delegate void Del(string message);
+
+                class Program
+                {
+                    public static void DelegateMethod(string message)
+                    {
+                        System.Console.WriteLine(message);
+                    }
+
+                    static void Main(string[] args)
+                    {
+                        Del handler = DelegateMethod;
+                        handler($$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "message", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task InDelegateInvokeSyntax()
         {
-            var markup = @"
-public delegate void Del(string message);
-
-class Program
-{
-    public static void DelegateMethod(string message)
-    {
-        System.Console.WriteLine(message);
-    }
-
-    static void Main(string[] args)
-    {
-        Del handler = DelegateMethod;
-        handler.Invoke($$
-    }
-}";
+            var markup = """
+                public delegate void Del(string message);
+
+                class Program
+                {
+                    public static void DelegateMethod(string message)
+                    {
+                        System.Console.WriteLine(message);
+                    }
+
+                    static void Main(string[] args)
+                    {
+                        Del handler = DelegateMethod;
+                        handler.Invoke($$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "message", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task NotInComment()
         {
-            var markup = @"
-public class Test
-{
-static void Main()
-{
-M(x: 0, //Hit ctrl-space at the end of this comment $$
-y: 1);
-}
-static void M(int x, int y) { }
-}
-";
+            var markup = """
+                public class Test
+                {
+                static void Main()
+                {
+                M(x: 0, //Hit ctrl-space at the end of this comment $$
+                y: 1);
+                }
+                static void M(int x, int y) { }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task CommitWithColonWordFullyTyped()
         {
-            var markup = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        Main(args$$)
-    }
-}
-";
-
-            var expected = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        Main(args:)
-    }
-}
-";
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Main(args$$)
+                    }
+                }
+                """;
+
+            var expected = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Main(args:)
+                    }
+                }
+                """;
             await VerifyProviderCommitAsync(markup, "args:", expected, ':');
         }
 
         [Fact]
         public async Task CommitWithColonWordPartiallyTyped()
         {
-            var markup = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        Main(arg$$)
-    }
-}
-";
-
-            var expected = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        Main(args:)
-    }
-}
-";
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Main(arg$$)
+                    }
+                }
+                """;
+
+            var expected = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Main(args:)
+                    }
+                }
+                """;
             await VerifyProviderCommitAsync(markup, "args:", expected, ':');
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ObjectInitializerCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ObjectInitializerCompletionProviderTests.cs
index f5d1c65dfad1d..16e149cddd331 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ObjectInitializerCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ObjectInitializerCompletionProviderTests.cs
@@ -26,16 +26,17 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task NothingToInitialize()
         {
-            var markup = @"
-class C { }
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { $$
-    }
-}";
+            var markup = """
+                class C { }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { $$
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
             await VerifyExclusiveAsync(markup, true);
@@ -44,16 +45,17 @@ void goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/46397")]
         public async Task ImplicitObjectCreation_NothingToInitialize()
         {
-            var markup = @"
-class C { }
-
-class D
-{
-    void goo()
-    {
-       C goo = new() { $$
-    }
-}";
+            var markup = """
+                class C { }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new() { $$
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
             await VerifyExclusiveAsync(markup, true);
@@ -62,16 +64,17 @@ void goo()
         [Fact]
         public async Task OneItem1()
         {
-            var markup = @"
-class C { public int value {set; get; }}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { v$$
-    }
-}";
+            var markup = """
+                class C { public int value {set; get; }}
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { v$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "value");
             await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
@@ -81,16 +84,17 @@ void goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/46397")]
         public async Task ImplicitObjectCreation_OneItem1()
         {
-            var markup = @"
-class C { public int value {set; get; }}
-
-class D
-{
-    void goo()
-    {
-       C goo = new() { v$$
-    }
-}";
+            var markup = """
+                class C { public int value {set; get; }}
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new() { v$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "value");
             await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
@@ -100,16 +104,17 @@ void goo()
         [Fact]
         public async Task ImplicitObjectCreation_NullableStruct_OneItem1()
         {
-            var markup = @"
-struct S { public int value {set; get; }}
-
-class D
-{
-    void goo()
-    {
-       S? goo = new() { v$$
-    }
-}";
+            var markup = """
+                struct S { public int value {set; get; }}
+
+                class D
+                {
+                    void goo()
+                    {
+                       S? goo = new() { v$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "value");
             await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
@@ -119,16 +124,17 @@ void goo()
         [Fact]
         public async Task ShowWithEqualsSign()
         {
-            var markup = @"
-class C { public int value {set; get; }}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { v$$=
-    }
-}";
+            var markup = """
+                class C { public int value {set; get; }}
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { v$$=
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "value");
             await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
@@ -138,16 +144,17 @@ void goo()
         [Fact]
         public async Task OneItem2()
         {
-            var markup = @"
-class C
-{
-    public int value {set; get; }
-
-    void goo()
-    {
-       C goo = new C { v$$
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public int value {set; get; }
+
+                    void goo()
+                    {
+                       C goo = new C { v$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "value");
             await VerifyItemIsAbsentAsync(markup, "<value>k__BackingField");
@@ -157,20 +164,21 @@ void goo()
         [Fact]
         public async Task FieldAndProperty()
         {
-            var markup = @"
-class C 
-{ 
-    public int value {set; get; }
-    public int otherValue;
-}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { v$$
-    }
-}";
+            var markup = """
+                class C 
+                { 
+                    public int value {set; get; }
+                    public int otherValue;
+                }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { v$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "value");
             await VerifyItemExistsAsync(markup, "otherValue");
@@ -180,20 +188,21 @@ void goo()
         [Fact]
         public async Task HidePreviouslyTyped()
         {
-            var markup = @"
-class C 
-{ 
-    public int value {set; get; }
-    public int otherValue;
-}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { value = 3, o$$
-    }
-}";
+            var markup = """
+                class C 
+                { 
+                    public int value {set; get; }
+                    public int otherValue;
+                }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { value = 3, o$$
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "value");
             await VerifyExclusiveAsync(markup, true);
@@ -203,20 +212,21 @@ void goo()
         [Fact]
         public async Task NotInEqualsValue()
         {
-            var markup = @"
-class C 
-{ 
-    public int value {set; get; }
-    public int otherValue;
-}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { value = v$$
-    }
-}";
+            var markup = """
+                class C 
+                { 
+                    public int value {set; get; }
+                    public int otherValue;
+                }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { value = v$$
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -224,20 +234,21 @@ void goo()
         [Fact]
         public async Task NothingLeftToShow()
         {
-            var markup = @"
-class C 
-{ 
-    public int value {set; get; }
-    public int otherValue;
-}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { value = 3, otherValue = 4, $$
-    }
-}";
+            var markup = """
+                class C 
+                { 
+                    public int value {set; get; }
+                    public int otherValue;
+                }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { value = 3, otherValue = 4, $$
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
             await VerifyExclusiveAsync(markup, true);
@@ -246,25 +257,26 @@ void goo()
         [Fact]
         public async Task NestedObjectInitializers()
         {
-            var markup = @"
-class C 
-{ 
-    public int value {set; get; }
-    public int otherValue;
-}
-
-class D
-{
-    public C myValue {set; get;}
-}
-
-class E
-{
-    void goo()
-    {
-       D bar = new D { myValue = new C { $$
-    }
-}";
+            var markup = """
+                class C 
+                { 
+                    public int value {set; get; }
+                    public int otherValue;
+                }
+
+                class D
+                {
+                    public C myValue {set; get;}
+                }
+
+                class E
+                {
+                    void goo()
+                    {
+                       D bar = new D { myValue = new C { $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "myValue");
             await VerifyItemExistsAsync(markup, "value");
             await VerifyItemExistsAsync(markup, "otherValue");
@@ -274,104 +286,111 @@ void goo()
         [Fact]
         public async Task NotExclusive1()
         {
-            var markup = @"using System.Collections.Generic;
-class C : IEnumerable<int>
-{ 
-    public void Add(int a) { }
-    public int value {set; get; }
-    public int otherValue;
-}
-
-class D
-{
-    void goo()
-    {
-       C bar = new C { v$$
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+                class C : IEnumerable<int>
+                { 
+                    public void Add(int a) { }
+                    public int value {set; get; }
+                    public int otherValue;
+                }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C bar = new C { v$$
+                    }
+                }
+                """;
             await VerifyExclusiveAsync(markup, false);
         }
 
         [Fact]
         public async Task NotExclusive2()
         {
-            var markup = @"using System.Collections;
-class C : IEnumerable
-{ 
-    public void Add(object a) { }
-    public int value {set; get; }
-    public int otherValue;
-}
-
-class D
-{
-    void goo()
-    {
-       C bar = new C { v$$
-    }
-}";
+            var markup = """
+                using System.Collections;
+                class C : IEnumerable
+                { 
+                    public void Add(object a) { }
+                    public int value {set; get; }
+                    public int otherValue;
+                }
+
+                class D
+                {
+                    void goo()
+                    {
+                       C bar = new C { v$$
+                    }
+                }
+                """;
             await VerifyExclusiveAsync(markup, false);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544242")]
         public async Task NotInArgumentList()
         {
-            var markup = @"class C
-{
-    void M(int i, int j)
-    {
-        M(i, j$$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    void M(int i, int j)
+                    {
+                        M(i, j$$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/530075")]
         public async Task NotInArgumentList2()
         {
-            var markup = @"class C
-{
-    public int A;
-    void M(int i, int j)
-    {
-        new C(1, $$
-    }
-}
-";
+            var markup = """
+                class C
+                {
+                    public int A;
+                    void M(int i, int j)
+                    {
+                        new C(1, $$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544289")]
         public async Task DerivedMembers()
         {
-            var markup = @"using System;
-using System.Collections.Generic;
-using System.Linq;
-using System.Text; 
-namespace ConsoleApplication1
-{
-    class Base
-    {
-        public int GooBase;
-        private int BasePrivate { get; set; }
-        public int BasePublic{ get; set; }
-    }
-
-    class Derived : Base
-    {
-        public int GooDerived;
-    }
-
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            var x = new Derived { F$$ 
-        }
-    }
-}
-";
+            var markup = """
+                using System;
+                using System.Collections.Generic;
+                using System.Linq;
+                using System.Text; 
+                namespace ConsoleApplication1
+                {
+                    class Base
+                    {
+                        public int GooBase;
+                        private int BasePrivate { get; set; }
+                        public int BasePublic{ get; set; }
+                    }
+
+                    class Derived : Base
+                    {
+                        public int GooDerived;
+                    }
+
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            var x = new Derived { F$$ 
+                        }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "GooBase");
             await VerifyItemExistsAsync(markup, "GooDerived");
             await VerifyItemExistsAsync(markup, "BasePublic");
@@ -381,52 +400,55 @@ static void Main(string[] args)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544242")]
         public async Task NotInCollectionInitializer()
         {
-            var markup = @"using System.Collections.Generic;
-class C
-{
-    void goo()
-    {
-        var a = new List<int> {0, $$
-    }
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class C
+                {
+                    void goo()
+                    {
+                        var a = new List<int> {0, $$
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task InitializeDerivedType()
         {
-            var markup = @"using System.Collections.Generic;
-
-class B {}
-class D : B
-{
-    public int goo;
-}
-
-class C
-{
-    void stuff()
-    {
-        B a = new D { $$
-    }
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+
+                class B {}
+                class D : B
+                {
+                    public int goo;
+                }
+
+                class C
+                {
+                    void stuff()
+                    {
+                        B a = new D { $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "goo");
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544550")]
         public async Task ReadOnlyPropertiesShouldNotBePresent()
         {
-            var markup = @"using System.Collections.Generic;
-class C
-{
-    void goo()
-    {
-        var a = new List<int> {$$
-    }
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class C
+                {
+                    void goo()
+                    {
+                        var a = new List<int> {$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Capacity");
             await VerifyItemIsAbsentAsync(markup, "Count");
@@ -435,15 +457,16 @@ void goo()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544550")]
         public async Task IndexersShouldNotBePresent()
         {
-            var markup = @"using System.Collections.Generic;
-class C
-{
-    void goo()
-    {
-        var a = new List<int> {$$
-    }
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class C
+                {
+                    void goo()
+                    {
+                        var a = new List<int> {$$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Capacity");
             await VerifyItemIsAbsentAsync(markup, "this[]");
@@ -452,18 +475,19 @@ void goo()
         [Fact]
         public async Task ReadOnlyPropertiesThatFollowTheCollectionPatternShouldBePresent()
         {
-            var markup = @"using System.Collections.Generic;
-class C
-{
-    public readonly int goo;
-    public readonly List<int> bar;
-
-    void M()
-    {
-        new C() { $$
-    }
-}
-";
+            var markup = """
+                using System.Collections.Generic;
+                class C
+                {
+                    public readonly int goo;
+                    public readonly List<int> bar;
+
+                    void M()
+                    {
+                        new C() { $$
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "goo");
             await VerifyItemExistsAsync(markup, "bar");
@@ -472,19 +496,20 @@ void M()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544607")]
         public async Task DoNotIncludeStaticMember()
         {
-            var markup = @"
-class Goo
-{
-    public static int Gibberish { get; set; }
-}
- 
-class Bar
-{
-    void goo()
-    {
-        var c = new Goo { $$
-    }
-}";
+            var markup = """
+                class Goo
+                {
+                    public static int Gibberish { get; set; }
+                }
+
+                class Bar
+                {
+                    void goo()
+                    {
+                        var c = new Goo { $$
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "Gibberish");
         }
@@ -492,20 +517,22 @@ void goo()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
         public async Task EditorBrowsable_PropertyInObjectCreationAlways()
         {
-            var markup = @"
-public class C
-{
-    public void M()
-    {
-        var x = new Goo { $$
-    }
-}";
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public string Prop { get; set; }
-}";
+            var markup = """
+                public class C
+                {
+                    public void M()
+                    {
+                        var x = new Goo { $$
+                    }
+                }
+                """;
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public string Prop { get; set; }
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -520,20 +547,22 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
         public async Task EditorBrowsable_PropertyInObjectCreationNever()
         {
-            var markup = @"
-public class C
-{
-    public void M()
-    {
-        var x = new Goo { $$
-    }
-}";
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public string Prop { get; set; }
-}";
+            var markup = """
+                public class C
+                {
+                    public void M()
+                    {
+                        var x = new Goo { $$
+                    }
+                }
+                """;
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public string Prop { get; set; }
+                }
+                """;
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
                 referencedCode: referencedCode,
@@ -547,20 +576,22 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545678")]
         public async Task EditorBrowsable_PropertyInObjectCreationAdvanced()
         {
-            var markup = @"
-public class C
-{
-    public void M()
-    {
-        var x = new Goo { $$
-    }
-}";
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-    public string Prop { get; set; }
-}";
+            var markup = """
+                public class C
+                {
+                    public void M()
+                    {
+                        var x = new Goo { $$
+                    }
+                }
+                """;
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    public string Prop { get; set; }
+                }
+                """;
             HideAdvancedMembers = true;
 
             await VerifyItemInEditorBrowsableContextsAsync(
@@ -587,16 +618,17 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact]
         public async Task TestCommitCharacter()
         {
-            const string markup = @"
-class C { public int value {set; get; }}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { v$$
-    }
-}";
+            const string markup = """
+                class C { public int value {set; get; }}
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { v$$
+                    }
+                }
+                """;
 
             await VerifyCommonCommitCharactersAsync(markup, textTypedSoFar: "v");
         }
@@ -604,16 +636,17 @@ void goo()
         [Fact]
         public async Task TestEnter()
         {
-            const string markup = @"
-class C { public int value {set; get; }}
-
-class D
-{
-    void goo()
-    {
-       C goo = new C { v$$
-    }
-}";
+            const string markup = """
+                class C { public int value {set; get; }}
+
+                class D
+                {
+                    void goo()
+                    {
+                       C goo = new C { v$$
+                    }
+                }
+                """;
 
             using var workspace = TestWorkspace.CreateCSharp(markup, composition: GetComposition());
             var hostDocument = workspace.Documents.Single();
@@ -636,15 +669,17 @@ public void TestTrigger()
         public async Task DoNotIncludeIndexedPropertyWithNonOptionalParameter()
         {
             var markup = @"C c01 = new C() {$$ }";
-            var referencedCode = @"Public Class C
-    Public Property IndexProp(ByVal p1 As Integer) As String
-        Get
-            Return Nothing
-        End Get
-        Set(ByVal value As String)
-        End Set
-    End Property
-End Class";
+            var referencedCode = """
+                Public Class C
+                    Public Property IndexProp(ByVal p1 As Integer) As String
+                        Get
+                            Return Nothing
+                        End Get
+                        Set(ByVal value As String)
+                        End Set
+                    End Property
+                End Class
+                """;
 
             HideAdvancedMembers = false;
 
@@ -661,40 +696,41 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
         public async Task CollectionInitializerPatternFromBaseType()
         {
-            var markup = @"
-using System;
-using System.Collections;
-
-public class SupportsAdd : IEnumerable
-{
-    public void Add(int x) { }
-
-    public IEnumerator GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-
-    IEnumerator IEnumerable.GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-}
-
-class SupportsAddDerived : SupportsAdd { }
-
-class Container
-{
-    public SupportsAdd S { get; }
-    public SupportsAddDerived D { get; }
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var y = new Container { $$ };
-    }
-}";
+            var markup = """
+                using System;
+                using System.Collections;
+
+                public class SupportsAdd : IEnumerable
+                {
+                    public void Add(int x) { }
+
+                    public IEnumerator GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+
+                    IEnumerator IEnumerable.GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+                }
+
+                class SupportsAddDerived : SupportsAdd { }
+
+                class Container
+                {
+                    public SupportsAdd S { get; }
+                    public SupportsAddDerived D { get; }
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var y = new Container { $$ };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "S");
             await VerifyItemExistsAsync(markup, "D");
@@ -703,40 +739,41 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
         public async Task CollectionInitializerPatternFromBaseTypeInaccessible()
         {
-            var markup = @"
-using System;
-using System.Collections;
-
-public class SupportsAdd : IEnumerable
-{
-    protected void Add(int x) { }
-
-    public IEnumerator GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-
-    IEnumerator IEnumerable.GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-}
-
-class SupportsAddDerived : SupportsAdd { }
-
-class Container
-{
-    public SupportsAdd S { get; }
-    public SupportsAddDerived D { get; }
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var y = new Container { $$ };
-    }
-}";
+            var markup = """
+                using System;
+                using System.Collections;
+
+                public class SupportsAdd : IEnumerable
+                {
+                    protected void Add(int x) { }
+
+                    public IEnumerator GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+
+                    IEnumerator IEnumerable.GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+                }
+
+                class SupportsAddDerived : SupportsAdd { }
+
+                class Container
+                {
+                    public SupportsAdd S { get; }
+                    public SupportsAddDerived D { get; }
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var y = new Container { $$ };
+                    }
+                }
+                """;
 
             // Can't use S={3}, but the object initializer syntax S={} is still valid
             await VerifyItemExistsAsync(markup, "S");
@@ -746,22 +783,23 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/13158")]
         public async Task CollectionInitializerForInterfaceType1()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-public class Goo
-{
-    public IList<int> Items { get; } = new List<int>();
-    public int Bar;
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var y = new Goo { $$ };
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                public class Goo
+                {
+                    public IList<int> Items { get; } = new List<int>();
+                    public int Bar;
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var y = new Goo { $$ };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Items");
             await VerifyItemExistsAsync(markup, "Bar");
@@ -770,24 +808,25 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/13158")]
         public async Task CollectionInitializerForInterfaceType2()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-public interface ICustomCollection<T> : ICollection<T> { }
-
-public class Goo
-{
-    public ICustomCollection<int> Items { get; } = new List<int>();
-    public int Bar;
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var y = new Goo { $$ };
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                public interface ICustomCollection<T> : ICollection<T> { }
+
+                public class Goo
+                {
+                    public ICustomCollection<int> Items { get; } = new List<int>();
+                    public int Bar;
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var y = new Goo { $$ };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Items");
             await VerifyItemExistsAsync(markup, "Bar");
@@ -796,37 +835,38 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
         public async Task CollectionInitializerPatternFromBaseTypeAccessible()
         {
-            var markup = @"
-using System;
-using System.Collections;
-
-public class SupportsAdd : IEnumerable
-{
-    protected void Add(int x) { }
-
-    public IEnumerator GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-
-    IEnumerator IEnumerable.GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-}
-
-class SupportsAddDerived : SupportsAdd 
-{ 
-class Container
-{
-    public SupportsAdd S { get; }
-    public SupportsAddDerived D { get; }
-}
-    static void Main(string[] args)
-    {
-        var y = new Container { $$ };
-    }
-}";
+            var markup = """
+                using System;
+                using System.Collections;
+
+                public class SupportsAdd : IEnumerable
+                {
+                    protected void Add(int x) { }
+
+                    public IEnumerator GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+
+                    IEnumerator IEnumerable.GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+                }
+
+                class SupportsAddDerived : SupportsAdd 
+                { 
+                class Container
+                {
+                    public SupportsAdd S { get; }
+                    public SupportsAddDerived D { get; }
+                }
+                    static void Main(string[] args)
+                    {
+                        var y = new Container { $$ };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "S");
             await VerifyItemExistsAsync(markup, "D");
@@ -835,24 +875,25 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4754")]
         public async Task ObjectInitializerOfGenericTypeConstructedWithInaccessibleType()
         {
-            var markup = @"
-class Generic<T>
-{
-    public string Value { get; set; }
-}
-
-class Program
-{
-    private class InaccessibleToGeneric
-    {
-
-    }
-
-    static void Main(string[] args)
-    {
-        var g = new Generic<InaccessibleToGeneric> { $$ }
-    }
-}";
+            var markup = """
+                class Generic<T>
+                {
+                    public string Value { get; set; }
+                }
+
+                class Program
+                {
+                    private class InaccessibleToGeneric
+                    {
+
+                    }
+
+                    static void Main(string[] args)
+                    {
+                        var g = new Generic<InaccessibleToGeneric> { $$ }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Value");
         }
@@ -860,24 +901,25 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
         public async Task ObjectInitializerOfGenericTypeСonstraint1()
         {
-            var markup = @"
-internal interface IExample
-{
-    string A { get; set; }
-    string B { get; set; }
-}
-
-internal class Example
-{
-    public static T Create<T>()
-        where T : IExample, new()
-    {
-        return new T
-        {
-            $$
-        };
-    }
-}";
+            var markup = """
+                internal interface IExample
+                {
+                    string A { get; set; }
+                    string B { get; set; }
+                }
+
+                internal class Example
+                {
+                    public static T Create<T>()
+                        where T : IExample, new()
+                    {
+                        return new T
+                        {
+                            $$
+                        };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "A");
             await VerifyItemExistsAsync(markup, "B");
@@ -886,18 +928,19 @@ public static T Create<T>()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
         public async Task ObjectInitializerOfGenericTypeСonstraint2()
         {
-            var markup = @"
-internal class Example
-{
-    public static T Create<T>()
-        where T : new()
-    {
-        return new T
-        {
-            $$
-        };
-    }
-}";
+            var markup = """
+                internal class Example
+                {
+                    public static T Create<T>()
+                        where T : new()
+                    {
+                        return new T
+                        {
+                            $$
+                        };
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -905,18 +948,19 @@ public static T Create<T>()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
         public async Task ObjectInitializerOfGenericTypeСonstraint3()
         {
-            var markup = @"
-internal class Example
-{
-    public static T Create<T>()
-        where T : System.Delegate, new()
-    {
-        return new T
-        {
-            $$
-        };
-    }
-}";
+            var markup = """
+                internal class Example
+                {
+                    public static T Create<T>()
+                        where T : System.Delegate, new()
+                    {
+                        return new T
+                        {
+                            $$
+                        };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "Target");
             await VerifyItemExistsAsync(markup, "Method");
@@ -925,18 +969,19 @@ public static T Create<T>()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24612")]
         public async Task ObjectInitializerOfGenericTypeСonstraint4()
         {
-            var markup = @"
-internal class Example
-{
-    public static T Create<T>()
-        where T : unmanaged
-    {
-        return new T
-        {
-            $$
-        };
-    }
-}";
+            var markup = """
+                internal class Example
+                {
+                    public static T Create<T>()
+                        where T : unmanaged
+                    {
+                        return new T
+                        {
+                            $$
+                        };
+                    }
+                }
+                """;
 
             await VerifyNoItemsExistAsync(markup);
         }
@@ -944,23 +989,24 @@ public static T Create<T>()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/26560")]
         public async Task ObjectInitializerEscapeKeywords()
         {
-            var markup = @"
-class C
-{
-    public int @new { get; set; }
+            var markup = """
+                class C
+                {
+                    public int @new { get; set; }
 
-    public int @this { get; set; }
+                    public int @this { get; set; }
 
-    public int now { get; set; }
-}
+                    public int now { get; set; }
+                }
 
-class D
-{
-    static void Main(string[] args)
-    {
-        var t = new C() { $$ };
-    }
-}";
+                class D
+                {
+                    static void Main(string[] args)
+                    {
+                        var t = new C() { $$ };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "@new");
             await VerifyItemExistsAsync(markup, "@this");
@@ -973,20 +1019,21 @@ static void Main(string[] args)
         [Fact]
         public async Task RequiredMembersLabeledAndSelected()
         {
-            var markup = @"
-class C
-{
-    public required int RequiredField;
-    public required int RequiredProperty { get; set; }
-}
-
-class D
-{
-    static void Main(string[] args)
-    {
-        var t = new C() { $$ };
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public required int RequiredField;
+                    public required int RequiredProperty { get; set; }
+                }
+
+                class D
+                {
+                    static void Main(string[] args)
+                    {
+                        var t = new C() { $$ };
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "RequiredField", inlineDescription: FeaturesResources.Required, matchPriority: MatchPriority.Preselect);
             await VerifyItemExistsAsync(markup, "RequiredProperty", inlineDescription: FeaturesResources.Required);
@@ -995,25 +1042,26 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
         public async Task NestedPropertyInitializers1()
         {
-            var markup = @"
-class A
-{
-    public B PropB { get; }
-}
-
-class B
-{
-    public int Prop { get; set; }
-}
-
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var a = new A { $$ }
-    }
-}";
+            var markup = """
+                class A
+                {
+                    public B PropB { get; }
+                }
+
+                class B
+                {
+                    public int Prop { get; set; }
+                }
+
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var a = new A { $$ }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "PropB");
         }
@@ -1021,30 +1069,31 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
         public async Task NestedPropertyInitializers2()
         {
-            var markup = @"
-class A
-{
-    public B PropB { get; }
-}
-
-class B
-{
-    public C PropC { get; }
-}
-
-class C
-{
-    public int P { get; set; }
-}
-
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var a = new A { $$ }
-    }
-}";
+            var markup = """
+                class A
+                {
+                    public B PropB { get; }
+                }
+
+                class B
+                {
+                    public C PropC { get; }
+                }
+
+                class C
+                {
+                    public int P { get; set; }
+                }
+
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var a = new A { $$ }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "PropB");
         }
@@ -1052,44 +1101,45 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
         public async Task NestedPropertyInitializers3()
         {
-            var markup = @"
-class A
-{
-    public B PropB { get; }
-}
-
-class B
-{
-    public C PropC { get; }
-}
-
-class C
-{
-    public SupportsAdd P { get; set; }
-}
-
-public class SupportsAdd : IEnumerable
-{
-    public void Add(int x) { }
-
-    public IEnumerator GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-
-    IEnumerator IEnumerable.GetEnumerator()
-    {
-        throw new NotImplementedException();
-    }
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var a = new A { $$ }
-    }
-}";
+            var markup = """
+                class A
+                {
+                    public B PropB { get; }
+                }
+
+                class B
+                {
+                    public C PropC { get; }
+                }
+
+                class C
+                {
+                    public SupportsAdd P { get; set; }
+                }
+
+                public class SupportsAdd : IEnumerable
+                {
+                    public void Add(int x) { }
+
+                    public IEnumerator GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+
+                    IEnumerator IEnumerable.GetEnumerator()
+                    {
+                        throw new NotImplementedException();
+                    }
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var a = new A { $$ }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "PropB");
         }
@@ -1097,30 +1147,31 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
         public async Task NestedPropertyInitializers4()
         {
-            var markup = @"
-class A
-{
-    public B PropB { get; }
-}
-
-class B
-{
-    public C PropC { get; }
-}
-
-class C
-{
-    public int P;
-}
-
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var a = new A { $$ }
-    }
-}";
+            var markup = """
+                class A
+                {
+                    public B PropB { get; }
+                }
+
+                class B
+                {
+                    public C PropC { get; }
+                }
+
+                class C
+                {
+                    public int P;
+                }
+
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var a = new A { $$ }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "PropB");
         }
@@ -1128,29 +1179,30 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15205")]
         public async Task NestedPropertyInitializers5()
         {
-            var markup = @"
-class A
-{
-    public B PropB { get; }
-}
-
-class B
-{
-    public C PropC { get; }
-}
-
-class C
-{
-    public int P { get; }
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var a = new A { $$ }
-    }
-}";
+            var markup = """
+                class A
+                {
+                    public B PropB { get; }
+                }
+
+                class B
+                {
+                    public C PropC { get; }
+                }
+
+                class C
+                {
+                    public int P { get; }
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var a = new A { $$ }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "PropB");
         }
@@ -1158,29 +1210,30 @@ static void Main(string[] args)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36702")]
         public async Task NestedPropertyInitializers6()
         {
-            var markup = @"
-class A
-{
-    public B PropB { get; }
-}
-
-class B
-{
-    public C PropC { get; }
-}
-
-class C
-{
-    public int P { get; }
-}
-
-class Program
-{
-    static void Main(string[] args)
-    {
-        var a = new A { PropB = { $$ } }
-    }
-}";
+            var markup = """
+                class A
+                {
+                    public B PropB { get; }
+                }
+
+                class B
+                {
+                    public C PropC { get; }
+                }
+
+                class C
+                {
+                    public int P { get; }
+                }
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var a = new A { PropB = { $$ } }
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "PropC");
         }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OperatorCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OperatorCompletionProviderTests.cs
index 709e98d5da5c7..ad8d7d2164cab 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OperatorCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OperatorCompletionProviderTests.cs
@@ -73,40 +73,40 @@ public static IEnumerable<object[]> UnaryOperators()
         public async Task OperatorIsNotOfferedAfterNumberLiteral()
         {
             // User may want to type a floating point literal.
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static C operator +(C a, C b) => default;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static C operator +(C a, C b) => default;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        1.$$
-    }
-}
-", SourceCodeKind.Regular);
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        1.$$
+                    }
+                }
+                """, SourceCodeKind.Regular);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorIsSuggestedAfterDot()
         {
-            await VerifyItemExistsAsync(@"
-public class C
-{
-    public static C operator +(C a, C b) => default;
-}
+            await VerifyItemExistsAsync("""
+                public class C
+                {
+                    public static C operator +(C a, C b) => default;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$;
-    }
-}
-", "+", inlineDescription: "x + y", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$;
+                    }
+                }
+                """, "+", inlineDescription: "x + y", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
@@ -145,84 +145,84 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorIsNotSuggestedOnStaticAccess()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static C operator +(C a, C b) => default;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static C operator +(C a, C b) => default;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        C.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        C.$$
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorIsNotSuggestedInNameoOfContext()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static C operator +(C a, C b) => default;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static C operator +(C a, C b) => default;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        var name = nameof(c.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        var name = nameof(c.$$
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorsAreSortedByImporttanceAndGroupedByTopic()
         {
-            var items = await GetCompletionItemsAsync(@"
-public class C
-{
-    public static C operator +(C a, C b) => null;
-    public static C operator -(C a, C b) => null;
-    public static C operator *(C a, C b) => null;
-    public static C operator /(C a, C b) => null;
-    public static C operator %(C a, C b) => null;
-    public static bool operator ==(C a, C b) => true;
-    public static bool operator !=(C a, C b) => false;
-    public static bool operator <(C a, C b) => true;
-    public static bool operator >(C a, C b) => false;
-    public static bool operator <=(C a, C b) => true;
-    public static bool operator >=(C a, C b) => false;
-    public static C operator +(C a) => null;
-    public static C operator -(C a) => null;
-    public static C operator ++(C a) => null;
-    public static C operator --(C a) => null;
-    public static bool operator true(C w) => true;
-    public static bool operator false(C w) => false;
-    public static bool operator &(C a, C b) => true;
-    public static bool operator |(C a, C b) => true;
-    public static C operator !(C a) => null;
-    public static C operator ^(C a, C b) => null;
-    public static C operator <<(C a, int b) => null;
-    public static C operator >>(C a, int b) => null;
-    public static C operator >>>(C a, int b) => null;
-    public static C operator ~(C a) => null;
-}
-
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$;
-    }
-}
-", SourceCodeKind.Regular);
+            var items = await GetCompletionItemsAsync("""
+                public class C
+                {
+                    public static C operator +(C a, C b) => null;
+                    public static C operator -(C a, C b) => null;
+                    public static C operator *(C a, C b) => null;
+                    public static C operator /(C a, C b) => null;
+                    public static C operator %(C a, C b) => null;
+                    public static bool operator ==(C a, C b) => true;
+                    public static bool operator !=(C a, C b) => false;
+                    public static bool operator <(C a, C b) => true;
+                    public static bool operator >(C a, C b) => false;
+                    public static bool operator <=(C a, C b) => true;
+                    public static bool operator >=(C a, C b) => false;
+                    public static C operator +(C a) => null;
+                    public static C operator -(C a) => null;
+                    public static C operator ++(C a) => null;
+                    public static C operator --(C a) => null;
+                    public static bool operator true(C w) => true;
+                    public static bool operator false(C w) => false;
+                    public static bool operator &(C a, C b) => true;
+                    public static bool operator |(C a, C b) => true;
+                    public static C operator !(C a) => null;
+                    public static C operator ^(C a, C b) => null;
+                    public static C operator <<(C a, int b) => null;
+                    public static C operator >>(C a, int b) => null;
+                    public static C operator >>>(C a, int b) => null;
+                    public static C operator ~(C a) => null;
+                }
+
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$;
+                    }
+                }
+                """, SourceCodeKind.Regular);
             // true and false operators are not listed
             Assert.Collection(items,
                 i => Assert.Equal("==", i.DisplayText),
@@ -308,22 +308,22 @@ public static void Main()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorNoSuggestionForTrueAndFalse()
         {
-            await VerifyNoItemsExistAsync(@"
-public class C
-{
-    public static bool operator true(C _) => true;
-    public static bool operator false(C _) => true;
-}
+            await VerifyNoItemsExistAsync("""
+                public class C
+                {
+                    public static bool operator true(C _) => true;
+                    public static bool operator false(C _) => true;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var c = new C();
-        c.$$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var c = new C();
+                        c.$$
+                    }
+                }
+                """);
         }
 
         [WpfTheory, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
@@ -583,20 +583,21 @@ public static void Main()
         [MemberData(nameof(UnaryOperators))]
         public async Task OperatorLiftingUnary(string operatorSign)
         {
-            const string template = @"
-public struct S
-{{
-    {0} => default;
-}}
-
-public class Program
-{{
-    public static void Main()
-    {{
-        S? s = null;
-        s.$$
-    }}
-}}";
+            const string template = """
+                public struct S
+                {{
+                    {0} => default;
+                }}
+
+                public class Program
+                {{
+                    public static void Main()
+                    {{
+                        S? s = null;
+                        s.$$
+                    }}
+                }}
+                """;
             var inlineDescription = operatorSign.Length == 1
                 ? $"{operatorSign}x"
                 : $"x{operatorSign}";
@@ -610,20 +611,21 @@ public static void Main()
         [MemberData(nameof(BinaryArithmeticAndLogicalOperators))]
         public async Task OperatorLiftingBinary(string operatorSign)
         {
-            const string template = @"
-public struct S
-{{
-    {0} => default;
-}}
-
-public class Program
-{{
-    public static void Main()
-    {{
-        S? s = null;
-        s.$$
-    }}
-}}";
+            const string template = """
+                public struct S
+                {{
+                    {0} => default;
+                }}
+
+                public class Program
+                {{
+                    public static void Main()
+                    {{
+                        S? s = null;
+                        s.$$
+                    }}
+                }}
+                """;
             var inlineDescription = $"x {operatorSign} y";
             await VerifyItemExistsAsync(string.Format(template, $"public static S operator {operatorSign}(S a, S b)"), operatorSign, inlineDescription: inlineDescription);
             await VerifyItemExistsAsync(string.Format(template, $"public static int operator {operatorSign}(S a, S b)"), operatorSign, inlineDescription: inlineDescription);
@@ -636,20 +638,21 @@ public static void Main()
         [MemberData(nameof(BinaryEqualityAndRelationalOperators))]
         public async Task OperatorLiftingEqualityRelational(string operatorSign)
         {
-            const string template = @"
-public struct S
-{{
-    {0} => default;
-}}
-
-public class Program
-{{
-    public static void Main()
-    {{
-        S? s = null;
-        s.$$
-    }}
-}}";
+            const string template = """
+                public struct S
+                {{
+                    {0} => default;
+                }}
+
+                public class Program
+                {{
+                    public static void Main()
+                    {{
+                        S? s = null;
+                        s.$$
+                    }}
+                }}
+                """;
             await VerifyItemExistsAsync(string.Format(template, $"public static bool operator {operatorSign}(S a, S b)"), operatorSign, inlineDescription: $"x {operatorSign} y");
             await VerifyNoItemsExistAsync(string.Format(template, $"public static int operator {operatorSign}(S a, S b)"));
             await VerifyNoItemsExistAsync(string.Format(template, $"public static bool operator {operatorSign}(S a, S b, S c)"));
@@ -659,101 +662,105 @@ public static void Main()
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorLiftingIsApplied()
         {
-            await VerifyCustomCommitProviderAsync(@"
-public struct S
-{
-    public static bool operator ==(S a, S b) => default;
-}
+            await VerifyCustomCommitProviderAsync("""
+                public struct S
+                {
+                    public static bool operator ==(S a, S b) => default;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        S? s = null;
-        s.$$
-    }
-}", "==", @"
-public struct S
-{
-    public static bool operator ==(S a, S b) => default;
-}
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        S? s = null;
+                        s.$$
+                    }
+                }
+                """, "==", """
+                public struct S
+                {
+                    public static bool operator ==(S a, S b) => default;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        S? s = null;
-        s == $$
-    }
-}");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        S? s = null;
+                        s == $$
+                    }
+                }
+                """);
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorOfBaseTypeIsSuggested()
         {
-            await VerifyItemExistsAsync(@"
-public class Base {
-    public static int operator +(Base b, int a)=>0;
-}
-public class Derived: Base
-{
-}
+            await VerifyItemExistsAsync("""
+                public class Base {
+                    public static int operator +(Base b, int a)=>0;
+                }
+                public class Derived: Base
+                {
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var d = new Derived();
-        d.$$
-    }
-}", "+", inlineDescription: "x + y", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var d = new Derived();
+                        d.$$
+                    }
+                }
+                """, "+", inlineDescription: "x + y", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorForRecordsAreSuggested()
         {
-            await VerifyItemExistsAsync(@"
-public record R {
-}
+            await VerifyItemExistsAsync("""
+                public record R {
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        var r = new R();
-        r.$$
-    }
-}", "==", inlineDescription: "x == y", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        var r = new R();
+                        r.$$
+                    }
+                }
+                """, "==", inlineDescription: "x == y", glyph: (int)Glyph.Operator, matchingFilters: new List<CompletionFilter> { FilterSet.OperatorFilter });
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnOperatorIsRespected_EditorBrowsableStateNever()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var c = new C();
-            c.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class C
-    {
-        [EditorBrowsable(EditorBrowsableState.Never)]
-        public static C operator -(C a, C b) => default;
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var c = new C();
+                            c.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class C
+                    {
+                        [EditorBrowsable(EditorBrowsableState.Never)]
+                        public static C operator -(C a, C b) => default;
+                    }
+                }
+                """;
 
             await VerifyItemInEditorBrowsableContextsAsync(
                 markup: markup,
@@ -768,31 +775,31 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task TestEditorBrowsableOnOperatorIsRespected_EditorBrowsableStateAdvanced()
         {
-            var markup = @"
-namespace N
-{
-    public class Program
-    {
-        public static void Main()
-        {
-            var c = new C();
-            c.$$
-        }
-    }
-}
-";
-            var referencedCode = @"
-using System.ComponentModel;
-
-namespace N
-{
-    public class C
-    {
-        [EditorBrowsable(EditorBrowsableState.Advanced)]
-        public static C operator -(C a, C b) => default;
-    }
-}
-";
+            var markup = """
+                namespace N
+                {
+                    public class Program
+                    {
+                        public static void Main()
+                        {
+                            var c = new C();
+                            c.$$
+                        }
+                    }
+                }
+                """;
+            var referencedCode = """
+                using System.ComponentModel;
+
+                namespace N
+                {
+                    public class C
+                    {
+                        [EditorBrowsable(EditorBrowsableState.Advanced)]
+                        public static C operator -(C a, C b) => default;
+                    }
+                }
+                """;
 
             HideAdvancedMembers = false;
 
@@ -820,39 +827,39 @@ await VerifyItemInEditorBrowsableContextsAsync(
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/47511")]
         public async Task OperatorBinaryNullForgivingHandling()
         {
-            await VerifyCustomCommitProviderAsync(@"
-#nullable enable
-
-public class C
-{
-    public static C operator +(C a, C b) => default;
-}
+            await VerifyCustomCommitProviderAsync("""
+                #nullable enable
 
-public class Program
-{
-    public static void Main()
-    {
-        C? c = null;
-        var _ = c!.$$
-    }
-}
-", "+", @"
-#nullable enable
+                public class C
+                {
+                    public static C operator +(C a, C b) => default;
+                }
 
-public class C
-{
-    public static C operator +(C a, C b) => default;
-}
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        C? c = null;
+                        var _ = c!.$$
+                    }
+                }
+                """, "+", """
+                #nullable enable
+
+                public class C
+                {
+                    public static C operator +(C a, C b) => default;
+                }
 
-public class Program
-{
-    public static void Main()
-    {
-        C? c = null;
-        var _ = c! + $$
-    }
-}
-");
+                public class Program
+                {
+                    public static void Main()
+                    {
+                        C? c = null;
+                        var _ = c! + $$
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OverrideCompletionProviderTests_ExpressionBody.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OverrideCompletionProviderTests_ExpressionBody.cs
index 416d0a52cf12e..8b0b73170a93f 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OverrideCompletionProviderTests_ExpressionBody.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/OverrideCompletionProviderTests_ExpressionBody.cs
@@ -36,23 +36,27 @@ internal override OptionsCollection NonCompletionOptions
         [WpfFact]
         public async Task CommitProducesExpressionBodyProperties()
         {
-            var markupBeforeCommit = @"class B
-{
-    public virtual int A { get; set; }
-    class C : B
-    {
-        override A$$
-    }
-}";
+            var markupBeforeCommit = """
+                class B
+                {
+                    public virtual int A { get; set; }
+                    class C : B
+                    {
+                        override A$$
+                    }
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"class B
-{
-    public virtual int A { get; set; }
-    class C : B
-    {
-        public override int A { get => base.A$$; set => base.A = value; }
-    }
-}";
+            var expectedCodeAfterCommit = """
+                class B
+                {
+                    public virtual int A { get; set; }
+                    class C : B
+                    {
+                        public override int A { get => base.A$$; set => base.A = value; }
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "A", expectedCodeAfterCommit);
         }
@@ -61,23 +65,27 @@ class C : B
         [WpfFact]
         public async Task CommitProducesExpressionBodyGetterOnlyProperty()
         {
-            var markupBeforeCommit = @"class B
-{
-    public virtual int A { get; }
-    class C : B
-    {
-        override A$$
-    }
-}";
+            var markupBeforeCommit = """
+                class B
+                {
+                    public virtual int A { get; }
+                    class C : B
+                    {
+                        override A$$
+                    }
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"class B
-{
-    public virtual int A { get; }
-    class C : B
-    {
-        public override int A => base.A;$$
-    }
-}";
+            var expectedCodeAfterCommit = """
+                class B
+                {
+                    public virtual int A { get; }
+                    class C : B
+                    {
+                        public override int A => base.A;$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "A", expectedCodeAfterCommit);
         }
@@ -86,23 +94,27 @@ class C : B
         [WpfFact]
         public async Task CommitProducesExpressionBodyMethod()
         {
-            var markupBeforeCommit = @"class B
-{
-    public virtual int A() => 2;
-    class C : B
-    {
-        override A$$
-    }
-}";
+            var markupBeforeCommit = """
+                class B
+                {
+                    public virtual int A() => 2;
+                    class C : B
+                    {
+                        override A$$
+                    }
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"class B
-{
-    public virtual int A() => 2;
-    class C : B
-    {
-        public override int A() => base.A();$$
-    }
-}";
+            var expectedCodeAfterCommit = """
+                class B
+                {
+                    public virtual int A() => 2;
+                    class C : B
+                    {
+                        public override int A() => base.A();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "A()", expectedCodeAfterCommit);
         }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialMethodCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialMethodCompletionProviderTests.cs
index ef46eb1930078..43b9d639c8d20 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialMethodCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialMethodCompletionProviderTests.cs
@@ -25,344 +25,402 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task NoPartialMethods1()
         {
-            var text = @"class c
-{
-    $$
-}";
+            var text = """
+                class c
+                {
+                    $$
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact]
         public async Task NoPartialMethods2()
         {
-            var text = @"class c
-{
-    private void goo() { };
+            var text = """
+                class c
+                {
+                    private void goo() { };
 
-    partial void $$
-}";
+                    partial void $$
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact]
         public async Task NoExtendedPartialMethods2()
         {
-            var text = @"class c
-{
-    public void goo() { };
+            var text = """
+                class c
+                {
+                    public void goo() { };
 
-    public void $$
-}";
+                    public void $$
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact]
         public async Task PartialMethodInPartialClass()
         {
-            var text = @"partial class c
-{
-    partial void goo();
+            var text = """
+                partial class c
+                {
+                    partial void goo();
 
-    partial void $$
-}";
+                    partial void $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task ExtendedPartialMethodInPartialClass()
         {
-            var text = @"partial class c
-{
-    public partial void goo();
+            var text = """
+                partial class c
+                {
+                    public partial void goo();
 
-    public partial void $$
-}";
+                    public partial void $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task PartialMethodInPartialGenericClass()
         {
-            var text = @"partial class c<T>
-{
-    partial void goo(T bar);
+            var text = """
+                partial class c<T>
+                {
+                    partial void goo(T bar);
 
-    partial void $$
-}";
+                    partial void $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo(T bar)");
         }
 
         [Fact]
         public async Task ExtendedPartialMethodInPartialGenericClass()
         {
-            var text = @"partial class c<T>
-{
-    public partial void goo(T bar);
+            var text = """
+                partial class c<T>
+                {
+                    public partial void goo(T bar);
 
-    public partial void $$
-}";
+                    public partial void $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo(T bar)");
         }
 
         [Fact]
         public async Task PartialMethodInPartialStruct()
         {
-            var text = @"partial struct c
-{
-    partial void goo();
+            var text = """
+                partial struct c
+                {
+                    partial void goo();
 
-    partial void $$
-}";
+                    partial void $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task ExtendedPartialMethodInPartialStruct()
         {
-            var text = @"partial struct c
-{
-    public partial void goo();
+            var text = """
+                partial struct c
+                {
+                    public partial void goo();
 
-    public partial void $$
-}";
+                    public partial void $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task CompletionOnPartial1()
         {
-            var text = @"partial class c
-{
-    partial void goo();
+            var text = """
+                partial class c
+                {
+                    partial void goo();
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task CompletionOnExtendedPartial1()
         {
-            var text = @"partial class c
-{
-    public partial void goo();
+            var text = """
+                partial class c
+                {
+                    public partial void goo();
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task CompletionOnPartial2()
         {
-            var text = @"partial class c
-{
-    partial void goo();
+            var text = """
+                partial class c
+                {
+                    partial void goo();
 
-    void partial $$
-}";
+                    void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task CompletionOnExtendedPartial2()
         {
-            var text = @"partial class c
-{
-    public partial void goo();
+            var text = """
+                partial class c
+                {
+                    public partial void goo();
 
-    void partial $$
-}";
+                    void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task StaticUnsafePartial()
         {
-            var text = @"partial class c
-{
-    partial static unsafe void goo();
+            var text = """
+                partial class c
+                {
+                    partial static unsafe void goo();
 
-    void static unsafe partial $$
-}";
+                    void static unsafe partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task StaticUnsafeExtendedPartial()
         {
-            var text = @"partial class c
-{
-    public partial static unsafe void goo();
+            var text = """
+                partial class c
+                {
+                    public partial static unsafe void goo();
 
-    void static unsafe partial $$
-}";
+                    void static unsafe partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task PartialCompletionWithPrivate()
         {
-            var text = @"partial class c
-{
-    partial static unsafe void goo();
+            var text = """
+                partial class c
+                {
+                    partial static unsafe void goo();
 
-    private partial $$
-}";
+                    private partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task PartialCompletionWithPublic()
         {
-            var text = @"partial class c
-{
-    public partial static unsafe void goo();
+            var text = """
+                partial class c
+                {
+                    public partial static unsafe void goo();
 
-    public partial $$
-}";
+                    public partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task NotCompletionDespiteValidModifier()
         {
-            var text = @"partial class c
-{
-    partial void goo();
+            var text = """
+                partial class c
+                {
+                    partial void goo();
 
-    void partial unsafe $$
-}";
+                    void partial unsafe $$
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact]
         public async Task NoExtendedCompletionDespiteValidModifier()
         {
-            var text = @"partial class c
-{
-    public partial void goo();
+            var text = """
+                partial class c
+                {
+                    public partial void goo();
 
-    void partial unsafe $$
-}";
+                    void partial unsafe $$
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact]
         public async Task YesIfPublic()
         {
-            var text = @"partial class c
-{
-    public partial void goo();
+            var text = """
+                partial class c
+                {
+                    public partial void goo();
 
-    void partial $$
-}";
+                    void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task YesIfInternal()
         {
-            var text = @"partial class c
-{
-    internal partial void goo();
+            var text = """
+                partial class c
+                {
+                    internal partial void goo();
 
-    void partial $$
-}";
+                    void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task YesIfProtected()
         {
-            var text = @"partial class c
-{
-    protected partial void goo();
+            var text = """
+                partial class c
+                {
+                    protected partial void goo();
 
-    void partial $$
-}";
+                    void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task YesIfProtectedInternal()
         {
-            var text = @"partial class c
-{
-    protected internal partial void goo();
+            var text = """
+                partial class c
+                {
+                    protected internal partial void goo();
 
-    void partial $$
-}";
+                    void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task YesIfExtern()
         {
-            var text = @"partial class c
-{
-    partial void goo();
+            var text = """
+                partial class c
+                {
+                    partial void goo();
 
-    extern void partial $$
-}";
+                    extern void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task YesIfVirtual()
         {
-            var text = @"partial class c
-{
-    virtual partial void goo();
+            var text = """
+                partial class c
+                {
+                    virtual partial void goo();
 
-    void partial $$
-}";
+                    void partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task YesIfNonVoidReturnType()
         {
-            var text = @"partial class c
-{
-    partial int goo();
+            var text = """
+                partial class c
+                {
+                    partial int goo();
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
             await VerifyItemExistsAsync(text, "goo()");
         }
 
         [Fact]
         public async Task NotInsideInterface()
         {
-            var text = @"partial interface i
-{
-    partial void goo();
+            var text = """
+                partial interface i
+                {
+                    partial void goo();
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [WpfFact]
         public async Task CommitInPartialClass()
         {
-            var markupBeforeCommit = @"partial class c
-{
-    partial void goo();
+            var markupBeforeCommit = """
+                partial class c
+                {
+                    partial void goo();
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"partial class c
-{
-    partial void goo();
+            var expectedCodeAfterCommit = """
+                partial class c
+                {
+                    partial void goo();
 
-    partial void goo()
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+                    partial void goo()
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo()", expectedCodeAfterCommit);
         }
@@ -370,22 +428,26 @@ partial void goo()
         [WpfFact]
         public async Task CommitInExtendedPartialClass()
         {
-            var markupBeforeCommit = @"partial class c
-{
-    public partial void goo();
+            var markupBeforeCommit = """
+                partial class c
+                {
+                    public partial void goo();
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"partial class c
-{
-    public partial void goo();
+            var expectedCodeAfterCommit = """
+                partial class c
+                {
+                    public partial void goo();
 
-    public partial void goo()
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+                    public partial void goo()
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo()", expectedCodeAfterCommit);
         }
@@ -393,22 +455,26 @@ public partial void goo()
         [WpfFact]
         public async Task CommitGenericPartialMethod()
         {
-            var markupBeforeCommit = @"partial class c<T>
-{
-    partial void goo(T bar);
+            var markupBeforeCommit = """
+                partial class c<T>
+                {
+                    partial void goo(T bar);
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"partial class c<T>
-{
-    partial void goo(T bar);
+            var expectedCodeAfterCommit = """
+                partial class c<T>
+                {
+                    partial void goo(T bar);
 
-    partial void goo(T bar)
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+                    partial void goo(T bar)
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo(T bar)", expectedCodeAfterCommit);
         }
@@ -416,22 +482,26 @@ partial void goo(T bar)
         [WpfFact]
         public async Task CommitGenericExtendedPartialMethod()
         {
-            var markupBeforeCommit = @"partial class c<T>
-{
-    public partial void goo(T bar);
+            var markupBeforeCommit = """
+                partial class c<T>
+                {
+                    public partial void goo(T bar);
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"partial class c<T>
-{
-    public partial void goo(T bar);
+            var expectedCodeAfterCommit = """
+                partial class c<T>
+                {
+                    public partial void goo(T bar);
 
-    public partial void goo(T bar)
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+                    public partial void goo(T bar)
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo(T bar)", expectedCodeAfterCommit);
         }
@@ -439,22 +509,26 @@ public partial void goo(T bar)
         [WpfFact]
         public async Task CommitMethodErasesPrivate()
         {
-            var markupBeforeCommit = @"partial class c
-{
-    partial void goo();
+            var markupBeforeCommit = """
+                partial class c
+                {
+                    partial void goo();
 
-    private partial $$
-}";
+                    private partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"partial class c
-{
-    partial void goo();
+            var expectedCodeAfterCommit = """
+                partial class c
+                {
+                    partial void goo();
 
-    partial void goo()
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+                    partial void goo()
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo()", expectedCodeAfterCommit);
         }
@@ -462,22 +536,26 @@ partial void goo()
         [WpfFact]
         public async Task CommitMethodKeepsExtendedPrivate()
         {
-            var markupBeforeCommit = @"partial class c
-{
-    private partial void goo();
+            var markupBeforeCommit = """
+                partial class c
+                {
+                    private partial void goo();
 
-    private partial $$
-}";
+                    private partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"partial class c
-{
-    private partial void goo();
+            var expectedCodeAfterCommit = """
+                partial class c
+                {
+                    private partial void goo();
 
-    private partial void goo()
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+                    private partial void goo()
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo()", expectedCodeAfterCommit);
         }
@@ -485,28 +563,32 @@ private partial void goo()
         [WpfFact]
         public async Task CommitInPartialClassPart()
         {
-            var markupBeforeCommit = @"partial class c
-{
-    partial void goo();
-}
-
-partial class c
-{
-    partial $$
-}";
-
-            var expectedCodeAfterCommit = @"partial class c
-{
-    partial void goo();
-}
-
-partial class c
-{
-    partial void goo()
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+            var markupBeforeCommit = """
+                partial class c
+                {
+                    partial void goo();
+                }
+
+                partial class c
+                {
+                    partial $$
+                }
+                """;
+
+            var expectedCodeAfterCommit = """
+                partial class c
+                {
+                    partial void goo();
+                }
+
+                partial class c
+                {
+                    partial void goo()
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo()", expectedCodeAfterCommit);
         }
@@ -514,28 +596,32 @@ partial void goo()
         [WpfFact]
         public async Task CommitInExtendedPartialClassPart()
         {
-            var markupBeforeCommit = @"partial class c
-{
-    public partial void goo();
-}
-
-partial class c
-{
-    partial $$
-}";
-
-            var expectedCodeAfterCommit = @"partial class c
-{
-    public partial void goo();
-}
-
-partial class c
-{
-    public partial void goo()
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+            var markupBeforeCommit = """
+                partial class c
+                {
+                    public partial void goo();
+                }
+
+                partial class c
+                {
+                    partial $$
+                }
+                """;
+
+            var expectedCodeAfterCommit = """
+                partial class c
+                {
+                    public partial void goo();
+                }
+
+                partial class c
+                {
+                    public partial void goo()
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo()", expectedCodeAfterCommit);
         }
@@ -543,22 +629,26 @@ public partial void goo()
         [WpfFact]
         public async Task CommitInPartialStruct()
         {
-            var markupBeforeCommit = @"partial struct c
-{
-    partial void goo();
+            var markupBeforeCommit = """
+                partial struct c
+                {
+                    partial void goo();
 
-    partial $$
-}";
+                    partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"partial struct c
-{
-    partial void goo();
+            var expectedCodeAfterCommit = """
+                partial struct c
+                {
+                    partial void goo();
 
-    partial void goo()
-    {
-        throw new System.NotImplementedException();$$
-    }
-}";
+                    partial void goo()
+                    {
+                        throw new System.NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "goo()", expectedCodeAfterCommit);
         }
@@ -566,64 +656,68 @@ partial void goo()
         [Fact]
         public async Task NotIfNoPartialKeyword()
         {
-            var text = @"partial class C
-    {
-        partial void Goo();
-    }
- 
-    partial class C
-    {
-        void $$
-    }
-";
+            var text = """
+                partial class C
+                    {
+                        partial void Goo();
+                    }
+
+                    partial class C
+                    {
+                        void $$
+                    }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact]
         public async Task NotIfNoExtendedPartialKeyword()
         {
-            var text = @"partial class C
-    {
-        public partial void Goo();
-    }
- 
-    partial class C
-    {
-        void $$
-    }
-";
+            var text = """
+                partial class C
+                    {
+                        public partial void Goo();
+                    }
+
+                    partial class C
+                    {
+                        void $$
+                    }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/578757")]
         public async Task DoNotConsiderFollowingDeclarationPartial()
         {
-            var text = @"class Program
-{
-    partial $$
- 
-    void Goo()
-    {
-        
-    }
-}
-";
+            var text = """
+                class Program
+                {
+                    partial $$
+
+                    void Goo()
+                    {
+
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/578757")]
         public async Task DoNotConsiderFollowingDeclarationExtendedPartial()
         {
-            var text = @"class Program
-{
-    public partial $$
- 
-    void Goo()
-    {
-        
-    }
-}
-";
+            var text = """
+                class Program
+                {
+                    public partial $$
+
+                    void Goo()
+                    {
+
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(text);
         }
 
@@ -631,26 +725,30 @@ void Goo()
         [WpfFact]
         public async Task CommitAsync()
         {
-            var markupBeforeCommit = @"using System;
+            var markupBeforeCommit = """
+                using System;
 
-partial class Bar
-{
-    partial void Goo();
+                partial class Bar
+                {
+                    partial void Goo();
 
-    async partial $$
-}";
+                    async partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"using System;
+            var expectedCodeAfterCommit = """
+                using System;
 
-partial class Bar
-{
-    partial void Goo();
+                partial class Bar
+                {
+                    partial void Goo();
 
-    async partial void Goo()
-    {
-        throw new NotImplementedException();$$
-    }
-}";
+                    async partial void Goo()
+                    {
+                        throw new NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "Goo()", expectedCodeAfterCommit);
         }
@@ -659,26 +757,30 @@ async partial void Goo()
         [WpfFact]
         public async Task CommitAsyncExtended()
         {
-            var markupBeforeCommit = @"using System;
+            var markupBeforeCommit = """
+                using System;
 
-partial class Bar
-{
-    public partial void Goo();
+                partial class Bar
+                {
+                    public partial void Goo();
 
-    async partial $$
-}";
+                    async partial $$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"using System;
+            var expectedCodeAfterCommit = """
+                using System;
 
-partial class Bar
-{
-    public partial void Goo();
+                partial class Bar
+                {
+                    public partial void Goo();
 
-    public async partial void Goo()
-    {
-        throw new NotImplementedException();$$
-    }
-}";
+                    public async partial void Goo()
+                    {
+                        throw new NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "Goo()", expectedCodeAfterCommit);
         }
@@ -687,26 +789,30 @@ public async partial void Goo()
         [WpfFact]
         public async Task AmbiguityCommittingWithParen()
         {
-            var markupBeforeCommit = @"using System;
+            var markupBeforeCommit = """
+                using System;
 
-partial class Bar
-{
-    partial void Goo();
+                partial class Bar
+                {
+                    partial void Goo();
 
-    partial Goo$$
-}";
+                    partial Goo$$
+                }
+                """;
 
-            var expectedCodeAfterCommit = @"using System;
+            var expectedCodeAfterCommit = """
+                using System;
 
-partial class Bar
-{
-    partial void Goo();
+                partial class Bar
+                {
+                    partial void Goo();
 
-    partial void Goo()
-    {
-        throw new NotImplementedException();$$
-    }
-}";
+                    partial void Goo()
+                    {
+                        throw new NotImplementedException();$$
+                    }
+                }
+                """;
 
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, "Goo()", expectedCodeAfterCommit, commitChar: '(');
         }
@@ -715,30 +821,32 @@ partial void Goo()
         [WpfFact]
         public async Task NoDefaultParameterValues()
         {
-            var text = @"namespace PartialClass
-{
-    partial class PClass
-    {
-        partial void PMethod(int i = 0);
-
-        partial $$
-    }
-}
-";
-
-            var expected = @"namespace PartialClass
-{
-    partial class PClass
-    {
-        partial void PMethod(int i = 0);
-
-        partial void PMethod(int i)
-        {
-            throw new System.NotImplementedException();$$
-        }
-    }
-}
-";
+            var text = """
+                namespace PartialClass
+                {
+                    partial class PClass
+                    {
+                        partial void PMethod(int i = 0);
+
+                        partial $$
+                    }
+                }
+                """;
+
+            var expected = """
+                namespace PartialClass
+                {
+                    partial class PClass
+                    {
+                        partial void PMethod(int i = 0);
+
+                        partial void PMethod(int i)
+                        {
+                            throw new System.NotImplementedException();$$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(text, "PMethod(int i)", expected);
         }
 
@@ -746,30 +854,32 @@ partial void PMethod(int i)
         [WpfFact]
         public async Task NoDefaultParameterValuesExtended()
         {
-            var text = @"namespace PartialClass
-{
-    partial class PClass
-    {
-        public partial void PMethod(int i = 0);
-
-        partial $$
-    }
-}
-";
-
-            var expected = @"namespace PartialClass
-{
-    partial class PClass
-    {
-        public partial void PMethod(int i = 0);
-
-        public partial void PMethod(int i)
-        {
-            throw new System.NotImplementedException();$$
-        }
-    }
-}
-";
+            var text = """
+                namespace PartialClass
+                {
+                    partial class PClass
+                    {
+                        public partial void PMethod(int i = 0);
+
+                        partial $$
+                    }
+                }
+                """;
+
+            var expected = """
+                namespace PartialClass
+                {
+                    partial class PClass
+                    {
+                        public partial void PMethod(int i = 0);
+
+                        public partial void PMethod(int i)
+                        {
+                            throw new System.NotImplementedException();$$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(text, "PMethod(int i)", expected);
         }
 
@@ -784,22 +894,24 @@ public async Task ExpressionBodyMethod()
                 CSharpCodeStyleOptions.PreferExpressionBodiedMethods,
                 new CodeStyleOption2<ExpressionBodyPreference>(ExpressionBodyPreference.WhenPossible, NotificationOption2.Silent));
 
-            var text = @"using System;
-partial class Bar
-{
-    partial void Foo();
-    partial $$
-}
-"
+            var text = """
+                using System;
+                partial class Bar
+                {
+                    partial void Foo();
+                    partial $$
+                }
+                """
 ;
 
-            var expected = @"using System;
-partial class Bar
-{
-    partial void Foo();
-    partial void Foo() => throw new NotImplementedException();$$
-}
-"
+            var expected = """
+                using System;
+                partial class Bar
+                {
+                    partial void Foo();
+                    partial void Foo() => throw new NotImplementedException();$$
+                }
+                """
 ;
 
             await VerifyCustomCommitProviderAsync(text, "Foo()", expected);
@@ -815,22 +927,24 @@ public async Task ExpressionBodyMethodExtended()
                 CSharpCodeStyleOptions.PreferExpressionBodiedMethods,
                 new CodeStyleOption2<ExpressionBodyPreference>(ExpressionBodyPreference.WhenPossible, NotificationOption2.Silent));
 
-            var text = @"using System;
-partial class Bar
-{
-    public partial void Foo();
-    partial $$
-}
-"
+            var text = """
+                using System;
+                partial class Bar
+                {
+                    public partial void Foo();
+                    partial $$
+                }
+                """
 ;
 
-            var expected = @"using System;
-partial class Bar
-{
-    public partial void Foo();
-    public partial void Foo() => throw new NotImplementedException();$$
-}
-"
+            var expected = """
+                using System;
+                partial class Bar
+                {
+                    public partial void Foo();
+                    public partial void Foo() => throw new NotImplementedException();$$
+                }
+                """
 ;
 
             await VerifyCustomCommitProviderAsync(text, "Foo()", expected);
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialTypeCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialTypeCompletionProviderTests.cs
index d53b6d57b3b2f..3ca1c15869953 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialTypeCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PartialTypeCompletionProviderTests.cs
@@ -21,10 +21,11 @@ internal override Type GetCompletionProviderType()
         [Fact]
         public async Task TestRecommendTypesWithoutPartial()
         {
-            var text = @"
-class C { }
+            var text = """
+                class C { }
 
-partial class $$";
+                partial class $$
+                """;
 
             await VerifyItemIsAbsentAsync(text, "C");
         }
@@ -32,10 +33,11 @@ partial class $$";
         [Fact]
         public async Task TestPartialClass1()
         {
-            var text = @"
-partial class C { }
+            var text = """
+                partial class C { }
 
-partial class $$";
+                partial class $$
+                """;
 
             await VerifyItemExistsAsync(text, "C");
         }
@@ -43,12 +45,13 @@ partial class $$";
         [Fact]
         public async Task TestPartialGenericClass1()
         {
-            var text = @"
-class Bar { }
+            var text = """
+                class Bar { }
 
-partial class C<Bar> { }
+                partial class C<Bar> { }
 
-partial class $$";
+                partial class $$
+                """;
 
             await VerifyItemExistsAsync(text, "C<Bar>");
         }
@@ -56,19 +59,21 @@ partial class $$";
         [Fact]
         public async Task TestPartialGenericClassCommitOnParen()
         {
-            var text = @"
-class Bar { }
+            var text = """
+                class Bar { }
 
-partial class C<Bar> { }
+                partial class C<Bar> { }
 
-partial class $$";
+                partial class $$
+                """;
 
-            var expected = @"
-class Bar { }
+            var expected = """
+                class Bar { }
 
-partial class C<Bar> { }
+                partial class C<Bar> { }
 
-partial class C<";
+                partial class C<
+                """;
 
             await VerifyProviderCommitAsync(text, "C<Bar>", expected, '<');
         }
@@ -76,19 +81,21 @@ partial class C<";
         [Fact]
         public async Task TestPartialGenericClassCommitOnTab()
         {
-            var text = @"
-class Bar { }
+            var text = """
+                class Bar { }
 
-partial class C<Bar> { }
+                partial class C<Bar> { }
 
-partial class $$";
+                partial class $$
+                """;
 
-            var expected = @"
-class Bar { }
+            var expected = """
+                class Bar { }
 
-partial class C<Bar> { }
+                partial class C<Bar> { }
 
-partial class C<Bar>";
+                partial class C<Bar>
+                """;
 
             await VerifyProviderCommitAsync(text, "C<Bar>", expected, null);
         }
@@ -96,15 +103,17 @@ partial class C<Bar>";
         [Fact]
         public async Task TestPartialGenericClassCommitOnSpace()
         {
-            var text = @"
-partial class C<T> { }
+            var text = """
+                partial class C<T> { }
 
-partial class $$";
+                partial class $$
+                """;
 
-            var expected = @"
-partial class C<T> { }
+            var expected = """
+                partial class C<T> { }
 
-partial class C<T> ";
+                partial class C<T> 
+                """;
 
             await VerifyProviderCommitAsync(text, "C<T>", expected, ' ');
         }
@@ -112,10 +121,11 @@ partial class C<T> ";
         [Fact]
         public async Task TestPartialClassWithModifiers()
         {
-            var text = @"
-partial class C { }
+            var text = """
+                partial class C { }
 
-internal partial class $$";
+                internal partial class $$
+                """;
 
             await VerifyItemExistsAsync(text, "C");
         }
@@ -123,10 +133,11 @@ internal partial class $$";
         [Fact]
         public async Task TestPartialStruct()
         {
-            var text = @"
-partial struct S { }
+            var text = """
+                partial struct S { }
 
-partial struct $$";
+                partial struct $$
+                """;
 
             await VerifyItemExistsAsync(text, "S");
         }
@@ -134,10 +145,11 @@ partial struct $$";
         [Fact]
         public async Task TestPartialInterface()
         {
-            var text = @"
-partial interface I { }
+            var text = """
+                partial interface I { }
 
-partial interface $$";
+                partial interface $$
+                """;
 
             await VerifyItemExistsAsync(text, "I");
         }
@@ -145,10 +157,11 @@ partial interface $$";
         [Fact]
         public async Task TestTypeKindMatches1()
         {
-            var text = @"
-partial struct S { }
+            var text = """
+                partial struct S { }
 
-partial class $$";
+                partial class $$
+                """;
 
             await VerifyNoItemsExistAsync(text);
         }
@@ -156,10 +169,11 @@ partial class $$";
         [Fact]
         public async Task TestTypeKindMatches2()
         {
-            var text = @"
-partial class C { }
+            var text = """
+                partial class C { }
 
-partial struct $$";
+                partial struct $$
+                """;
 
             await VerifyNoItemsExistAsync(text);
         }
@@ -167,16 +181,17 @@ partial struct $$";
         [Fact]
         public async Task TestPartialClassesInSameNamespace()
         {
-            var text = @"
-namespace N
-{
-    partial class Goo { }
-}
-
-namespace N
-{
-    partial class $$
-}";
+            var text = """
+                namespace N
+                {
+                    partial class Goo { }
+                }
+
+                namespace N
+                {
+                    partial class $$
+                }
+                """;
 
             await VerifyItemExistsAsync(text, "Goo");
         }
@@ -184,13 +199,14 @@ partial class $$
         [Fact]
         public async Task TestNotPartialClassesAcrossDifferentNamespaces()
         {
-            var text = @"
-namespace N
-{
-    partial class Goo { }
-}
+            var text = """
+                namespace N
+                {
+                    partial class Goo { }
+                }
 
-partial class $$";
+                partial class $$
+                """;
 
             await VerifyNoItemsExistAsync(text);
         }
@@ -198,14 +214,14 @@ partial class $$";
         [Fact]
         public async Task TestNotPartialClassesInOuterNamespaces()
         {
-            var text = @"
-partial class C { }
+            var text = """
+                partial class C { }
 
-namespace N
-{
-    partial class $$
-}
-";
+                namespace N
+                {
+                    partial class $$
+                }
+                """;
 
             await VerifyNoItemsExistAsync(text);
         }
@@ -213,12 +229,12 @@ partial class $$
         [Fact]
         public async Task TestNotPartialClassesInOuterClass()
         {
-            var text = @"
-partial class C
-{
-    partial class $$
-}
-";
+            var text = """
+                partial class C
+                {
+                    partial class $$
+                }
+                """;
 
             await VerifyNoItemsExistAsync(text);
         }
@@ -226,15 +242,17 @@ partial class $$
         [Fact]
         public async Task TestClassWithConstraint()
         {
-            var text = @"
-partial class C1<T> where T : System.Exception { }
+            var text = """
+                partial class C1<T> where T : System.Exception { }
 
-partial class $$";
+                partial class $$
+                """;
 
-            var expected = @"
-partial class C1<T> where T : System.Exception { }
+            var expected = """
+                partial class C1<T> where T : System.Exception { }
 
-partial class C1<T>";
+                partial class C1<T>
+                """;
 
             await VerifyProviderCommitAsync(text, "C1<T>", expected, null);
         }
@@ -250,10 +268,11 @@ public async Task TestDoNotSuggestCurrentMember()
         [Fact]
         public async Task TestNotInTrivia()
         {
-            var text = @"
-partial class C1 { }
+            var text = """
+                partial class C1 { }
 
-partial class //$$";
+                partial class //$$
+                """;
 
             await VerifyNoItemsExistAsync(text);
         }
@@ -261,15 +280,17 @@ partial class //$$";
         [Fact]
         public async Task TestPartialClassWithReservedName()
         {
-            var text = @"
-partial class @class { }
+            var text = """
+                partial class @class { }
 
-partial class $$";
+                partial class $$
+                """;
 
-            var expected = @"
-partial class @class { }
+            var expected = """
+                partial class @class { }
 
-partial class @class";
+                partial class @class
+                """;
 
             await VerifyProviderCommitAsync(text, "@class", expected, null);
         }
@@ -277,15 +298,17 @@ partial class @class";
         [Fact]
         public async Task TestPartialGenericClassWithReservedName()
         {
-            var text = @"
-partial class @class<T> { }
+            var text = """
+                partial class @class<T> { }
 
-partial class $$";
+                partial class $$
+                """;
 
-            var expected = @"
-partial class @class<T> { }
+            var expected = """
+                partial class @class<T> { }
 
-partial class @class<T>";
+                partial class @class<T>
+                """;
 
             await VerifyProviderCommitAsync(text, "@class<T>", expected, null);
         }
@@ -293,15 +316,17 @@ partial class @class<T>";
         [Fact]
         public async Task TestPartialGenericInterfaceWithVariance()
         {
-            var text = @"
-partial interface I<out T> { }
+            var text = """
+                partial interface I<out T> { }
 
-partial interface $$";
+                partial interface $$
+                """;
 
-            var expected = @"
-partial interface I<out T> { }
+            var expected = """
+                partial interface I<out T> { }
 
-partial interface I<out T>";
+                partial interface I<out T>
+                """;
 
             await VerifyProviderCommitAsync(text, "I<out T>", expected, null);
         }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PropertySubPatternCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PropertySubPatternCompletionProviderTests.cs
index c59114d4ea099..f24dd826f4c90 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PropertySubPatternCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/PropertySubPatternCompletionProviderTests.cs
@@ -23,18 +23,18 @@ internal override Type GetCompletionProviderType()
         public async Task PropertiesInRecursivePattern()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
-
-    void M()
-    {
-        _ = this is Program { $$ }
-    }
-}
-";
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
+
+                    void M()
+                    {
+                        _ = this is Program { $$ }
+                    }
+                }
+                """;
             // VerifyItemExistsAsync also tests with the item typed.
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
@@ -44,19 +44,19 @@ void M()
         public async Task PropertiesInRecursivePattern_WithPositional()
         {
             var markup =
-@"
-public class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                public class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this is Program (1, 2) { $$ }
-    }
-    public void Deconstruct(out int x, out int y) => throw null;
-}
-";
+                    void M()
+                    {
+                        _ = this is Program (1, 2) { $$ }
+                    }
+                    public void Deconstruct(out int x, out int y) => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
         }
@@ -65,19 +65,19 @@ void M()
         public async Task PropertiesInRecursivePattern_WithPositional_UsingStaticType()
         {
             var markup =
-@"
-public class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                public class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this is (1, 2) { $$ }
-    }
-    public void Deconstruct(out int x, out int y) => throw null;
-}
-";
+                    void M()
+                    {
+                        _ = this is (1, 2) { $$ }
+                    }
+                    public void Deconstruct(out int x, out int y) => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
         }
@@ -86,18 +86,18 @@ void M()
         public async Task PropertiesInRecursivePattern_WithEscapedKeyword()
         {
             var markup =
-@"
-class Program
-{
-    public int @new { get; set; }
-    public int @struct { get; set; }
+                """
+                class Program
+                {
+                    public int @new { get; set; }
+                    public int @struct { get; set; }
 
-    void M()
-    {
-        _ = this is Program { $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is Program { $$ }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "@new", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "@struct", displayTextSuffix: "");
         }
@@ -106,17 +106,17 @@ void M()
         public async Task PropertiesInRecursivePattern_WriteOnlyProperties()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { set => throw null; }
+                """
+                class Program
+                {
+                    public int P1 { set => throw null; }
 
-    void M()
-    {
-        _ = this is Program { $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is Program { $$ }
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -124,20 +124,20 @@ void M()
         public async Task PropertiesInRecursivePattern_WithDerivedType()
         {
             var markup =
-@"
-class Program
-{
-    void M()
-    {
-        _ = this is Derived { $$ }
-    }
-}
-class Derived
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
-}
-";
+                """
+                class Program
+                {
+                    void M()
+                    {
+                        _ = this is Derived { $$ }
+                    }
+                }
+                class Derived
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
         }
@@ -146,20 +146,20 @@ class Derived
         public async Task PropertiesInRecursivePattern_WithOtherType()
         {
             var markup =
-@"
-class Program
-{
-    void M(Other other)
-    {
-        _ = other is Other { $$ }
-    }
-}
-class Other
-{
-    public int P1 { get; set; }
-    public int F2;
-}
-";
+                """
+                class Program
+                {
+                    void M(Other other)
+                    {
+                        _ = other is Other { $$ }
+                    }
+                }
+                class Other
+                {
+                    public int P1 { get; set; }
+                    public int F2;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "F2", displayTextSuffix: "");
         }
@@ -168,20 +168,20 @@ class Other
         public async Task PropertiesInRecursivePattern_WithDerivedType_WithInaccessibleMembers()
         {
             var markup =
-@"
-class Program
-{
-    void M()
-    {
-        _ = this is Derived { $$ }
-    }
-}
-class Derived : Program
-{
-    private int P1 { get; set; }
-    private int P2 { get; set; }
-}
-";
+                """
+                class Program
+                {
+                    void M()
+                    {
+                        _ = this is Derived { $$ }
+                    }
+                }
+                class Derived : Program
+                {
+                    private int P1 { get; set; }
+                    private int P2 { get; set; }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -189,20 +189,20 @@ class Derived : Program
         public async Task PropertiesInRecursivePattern_WithDerivedType_WithPrivateMember()
         {
             var markup =
-@"
-class Program
-{
-    private int P1 { get; set; }
-    void M()
-    {
-        _ = this is Derived { $$ }
-    }
-}
-class Derived : Program
-{
-    private int P2 { get; set; }
-}
-";
+                """
+                class Program
+                {
+                    private int P1 { get; set; }
+                    void M()
+                    {
+                        _ = this is Derived { $$ }
+                    }
+                }
+                class Derived : Program
+                {
+                    private int P2 { get; set; }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
         }
 
@@ -210,18 +210,18 @@ class Derived : Program
         public async Task PropertiesInRecursivePattern_UseStaticTypeFromIs()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this is { $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is { $$ }
+                    }
+                }
+                """;
             // VerifyItemExistsAsync also tests with the item typed.
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
@@ -231,21 +231,21 @@ void M()
         public async Task PropertiesInRecursivePattern_InSwitchStatement()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
-
-    void M()
-    {
-        switch (this)
-        {
-            case Program { $$ }
-        }
-    }
-}
-";
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
+
+                    void M()
+                    {
+                        switch (this)
+                        {
+                            case Program { $$ }
+                        }
+                    }
+                }
+                """;
             // VerifyItemExistsAsync also tests with the item typed.
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
@@ -255,21 +255,21 @@ void M()
         public async Task PropertiesInRecursivePattern_UseStaticTypeFromSwitchStatement()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
-
-    void M()
-    {
-        switch (this)
-        {
-            case { $$ }
-        }
-    }
-}
-";
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
+
+                    void M()
+                    {
+                        switch (this)
+                        {
+                            case { $$ }
+                        }
+                    }
+                }
+                """;
             // VerifyItemExistsAsync also tests with the item typed.
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
@@ -279,18 +279,18 @@ void M()
         public async Task PropertiesInRecursivePattern_InSwitchExpression()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this switch { { $$ } }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this switch { { $$ } }
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
         }
@@ -299,23 +299,23 @@ void M()
         public async Task PropertiesInRecursivePattern_NestedInProperty()
         {
             var markup =
-@"
-public class Nested
-{
-    public int P3 { get; set; }
-    public int P4 { get; set; }
-}
-class Program
-{
-    public int P1 { get; set; }
-    public Nested P2 { get; set; }
-
-    void M()
-    {
-         _ = this is Program { P2: { $$ } }
-    }
-}
-";
+                """
+                public class Nested
+                {
+                    public int P3 { get; set; }
+                    public int P4 { get; set; }
+                }
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public Nested P2 { get; set; }
+
+                    void M()
+                    {
+                         _ = this is Program { P2: { $$ } }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "P1");
             await VerifyItemIsAbsentAsync(markup, "P2");
             await VerifyItemExistsAsync(markup, "P3", displayTextSuffix: "");
@@ -326,23 +326,23 @@ void M()
         public async Task PropertiesInRecursivePattern_NestedInField()
         {
             var markup =
-@"
-public class Nested
-{
-    public int P3 { get; set; }
-    public int P4 { get; set; }
-}
-class Program
-{
-    public int P1 { get; set; }
-    public Nested F2;
-
-    void M()
-    {
-         _ = this is Program { F2: { $$ } }
-    }
-}
-";
+                """
+                public class Nested
+                {
+                    public int P3 { get; set; }
+                    public int P4 { get; set; }
+                }
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public Nested F2;
+
+                    void M()
+                    {
+                         _ = this is Program { F2: { $$ } }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "P1");
             await VerifyItemIsAbsentAsync(markup, "F2");
             await VerifyItemExistsAsync(markup, "P3", displayTextSuffix: "");
@@ -353,23 +353,23 @@ void M()
         public async Task PropertiesInRecursivePattern_Nested_WithFields()
         {
             var markup =
-@"
-public class Nested
-{
-    public int F3;
-    public int F4;
-}
-class Program
-{
-    public int P1 { get; set; }
-    public Nested P2 { get; set; }
-
-    void M()
-    {
-         _ = this is Program { P2: { $$ } }
-    }
-}
-";
+                """
+                public class Nested
+                {
+                    public int F3;
+                    public int F4;
+                }
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public Nested P2 { get; set; }
+
+                    void M()
+                    {
+                         _ = this is Program { P2: { $$ } }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "P1");
             await VerifyItemIsAbsentAsync(markup, "P2");
             await VerifyItemExistsAsync(markup, "F3", displayTextSuffix: "");
@@ -380,23 +380,23 @@ void M()
         public async Task PropertiesInRecursivePattern_Nested_WithMissingProperty()
         {
             var markup =
-@"
-public class Nested
-{
-    public int P3 { get; set; }
-    public int P4 { get; set; }
-}
-class Program
-{
-    public int P1 { get; set; }
-    public Nested P2 { get; set; }
-
-    void M()
-    {
-         _ = this is Program { : { $$ } }
-    }
-}
-";
+                """
+                public class Nested
+                {
+                    public int P3 { get; set; }
+                    public int P4 { get; set; }
+                }
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public Nested P2 { get; set; }
+
+                    void M()
+                    {
+                         _ = this is Program { : { $$ } }
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -404,18 +404,18 @@ void M()
         public async Task PropertiesInRecursivePattern_NoType()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = missing is { $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = missing is { $$ }
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -423,18 +423,18 @@ void M()
         public async Task PropertiesInRecursivePattern_MissingAfterColon()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this is { P1: $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is { P1: $$ }
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -442,18 +442,18 @@ void M()
         public async Task PropertiesInRecursivePattern_SecondProperty()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this is Program { P2: 1, $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is Program { P2: 1, $$ }
+                    }
+                }
+                """;
             // VerifyItemExistsAsync also tests with the item typed.
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemIsAbsentAsync(markup, "P2");
@@ -463,21 +463,21 @@ void M()
         public async Task PropertiesInRecursivePattern_PositionalInFirstProperty()
         {
             var markup =
-@"
-class Program
-{
-    public D P1 { get; set; }
-
-    void M()
-    {
-        _ = this is Program { P1: ($$ }
-    }
-}
-class D
-{
-    public int P2 { get; set; }
-}
-";
+                """
+                class Program
+                {
+                    public D P1 { get; set; }
+
+                    void M()
+                    {
+                        _ = this is Program { P1: ($$ }
+                    }
+                }
+                class D
+                {
+                    public int P2 { get; set; }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -485,21 +485,21 @@ class D
         public async Task PropertiesInRecursivePattern_PositionalInFirstProperty_AfterComma()
         {
             var markup =
-@"
-class Program
-{
-    public D P1 { get; set; }
-
-    void M()
-    {
-        _ = this is Program { P1: (1, $$ }
-    }
-}
-class D
-{
-    public int P2 { get; set; }
-}
-";
+                """
+                class Program
+                {
+                    public D P1 { get; set; }
+
+                    void M()
+                    {
+                        _ = this is Program { P1: (1, $$ }
+                    }
+                }
+                class D
+                {
+                    public int P2 { get; set; }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -507,21 +507,21 @@ class D
         public async Task PropertiesInRecursivePattern_PositionalInFirstProperty_AfterCommaAndBeforeParen()
         {
             var markup =
-@"
-class Program
-{
-    public D P1 { get; set; }
-
-    void M()
-    {
-        _ = this is Program { P1: (1, $$) }
-    }
-}
-class D
-{
-    public int P2 { get; set; }
-}
-";
+                """
+                class Program
+                {
+                    public D P1 { get; set; }
+
+                    void M()
+                    {
+                        _ = this is Program { P1: (1, $$) }
+                    }
+                }
+                class D
+                {
+                    public int P2 { get; set; }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -529,19 +529,19 @@ class D
         public async Task PropertiesInRecursivePattern_InPositional_Incomplete()
         {
             var markup =
-@"
-public class Program
-{
-    public int P1 { get; set; }
+                """
+                public class Program
+                {
+                    public int P1 { get; set; }
 
-    void M()
-    {
-        _ = this is ({ $$ }) // Can deconstruct into a parenthesized property pattern
-    }
+                    void M()
+                    {
+                        _ = this is ({ $$ }) // Can deconstruct into a parenthesized property pattern
+                    }
 
-    public void Deconstruct(out Program x, out Program y) => throw null;
-}
-";
+                    public void Deconstruct(out Program x, out Program y) => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
         }
 
@@ -549,19 +549,19 @@ void M()
         public async Task PropertiesInRecursivePattern_InPositional_Incomplete_WithoutClosingBrace()
         {
             var markup =
-@"
-public class Program
-{
-    public int P1 { get; set; }
+                """
+                public class Program
+                {
+                    public int P1 { get; set; }
 
-    void M()
-    {
-        _ = this is ({ $$   // Can deconstruct into a parenthesized property pattern
-    }
+                    void M()
+                    {
+                        _ = this is ({ $$   // Can deconstruct into a parenthesized property pattern
+                    }
 
-    public void Deconstruct(out Program x, out Program y) => throw null;
-}
-";
+                    public void Deconstruct(out Program x, out Program y) => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
         }
 
@@ -569,21 +569,21 @@ void M()
         public async Task PropertiesInRecursivePattern_InPositional_Incomplete_WithTwoTypes()
         {
             var markup =
-@"
-public class Program
-{
-    void M()
-    {
-        _ = this is ({ $$ }) // no deconstruction into 1 element
-    }
-
-    public void Deconstruct(out D x, out Program y) => throw null;
-}
-public class D
-{
-    public int P2 { get; set; }
-}
-";
+                """
+                public class Program
+                {
+                    void M()
+                    {
+                        _ = this is ({ $$ }) // no deconstruction into 1 element
+                    }
+
+                    public void Deconstruct(out D x, out Program y) => throw null;
+                }
+                public class D
+                {
+                    public int P2 { get; set; }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -591,19 +591,19 @@ public class D
         public async Task PropertiesInRecursivePattern_InPositional_Complete_BeforeComma()
         {
             var markup =
-@"
-public class Program
-{
-    public int P1 { get; set; }
+                """
+                public class Program
+                {
+                    public int P1 { get; set; }
 
-    void M()
-    {
-        _ = this is ({ $$ }, )
-    }
+                    void M()
+                    {
+                        _ = this is ({ $$ }, )
+                    }
 
-    public void Deconstruct(out Program x, out Program y) => throw null;
-}
-";
+                    public void Deconstruct(out Program x, out Program y) => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
         }
 
@@ -611,19 +611,19 @@ void M()
         public async Task PropertiesInRecursivePattern_InPositional_Complete_AfterComma()
         {
             var markup =
-@"
-public class Program
-{
-    public int P1 { get; set; }
+                """
+                public class Program
+                {
+                    public int P1 { get; set; }
 
-    void M()
-    {
-        _ = this is ( , { $$ })
-    }
+                    void M()
+                    {
+                        _ = this is ( , { $$ })
+                    }
 
-    public void Deconstruct(out Program x, out Program y) => throw null;
-}
-";
+                    public void Deconstruct(out Program x, out Program y) => throw null;
+                }
+                """;
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
         }
 
@@ -631,18 +631,18 @@ void M()
         public async Task PropertiesInRecursivePattern_NoPropertyLeft()
         {
             var markup =
-@"
-class Program
-{
-    public int P1 { get; set; }
-    public int P2 { get; set; }
+                """
+                class Program
+                {
+                    public int P1 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this is Program { P2: 1, P1: 2, $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is Program { P2: 1, P1: 2, $$ }
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
@@ -650,20 +650,20 @@ void M()
         public async Task PropertiesInRecursivePattern_NotForEditorUnbrowsable()
         {
             var markup =
-@"
-class Program
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public int P1 { get; set; }
+                """
+                class Program
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public int P1 { get; set; }
 
-    public int P2 { get; set; }
+                    public int P2 { get; set; }
 
-    void M()
-    {
-        _ = this is Program { $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is Program { $$ }
+                    }
+                }
+                """;
             // Ignore browsability limiting attributes if the symbol is declared in source.
             await VerifyItemExistsAsync(markup, "P1", displayTextSuffix: "");
             await VerifyItemExistsAsync(markup, "P2", displayTextSuffix: "");
@@ -673,15 +673,15 @@ void M()
         public async Task StaticProperties_NotSuggested()
         {
             var markup =
-@"
-class Program
-{
-    void M()
-    {
-        _ = """" is { $$ }
-    }
-}
-";
+                """
+                class Program
+                {
+                    void M()
+                    {
+                        _ = "" is { $$ }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "Empty");
         }
 
@@ -689,17 +689,17 @@ void M()
         public async Task StaticFields_NotSuggested()
         {
             var markup =
-@"
-class Program
-{
-    static int x = 42;
+                """
+                class Program
+                {
+                    static int x = 42;
 
-    void M()
-    {
-        _ = this is { $$ }
-    }
-}
-";
+                    void M()
+                    {
+                        _ = this is { $$ }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "x");
         }
 
@@ -707,15 +707,15 @@ void M()
         public async Task ConstFields_NotSuggested()
         {
             var markup =
-@"
-class Program
-{
-    void M()
-    {
-        _ = 5 is { $$ }
-    }
-}
-";
+                """
+                class Program
+                {
+                    void M()
+                    {
+                        _ = 5 is { $$ }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markup, "MaxValue");
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ReferenceDirectiveCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ReferenceDirectiveCompletionProviderTests.cs
index 29293e5b106d5..73f87b31c4b21 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ReferenceDirectiveCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/ReferenceDirectiveCompletionProviderTests.cs
@@ -94,7 +94,9 @@ public async Task FileSystemReference()
             var normalizedWindowsPath = Directory.GetDirectories(windowsRoot, windowsDir.Name).Single();
             var windowsFolderName = Path.GetFileName(normalizedWindowsPath);
 
-            var code = "#r \"" + windowsRoot + "$$";
+            var code = """
+                #r "
+                """ + windowsRoot + "$$";
             await VerifyItemExistsAsync(code, windowsFolderName, expectedDescriptionOrNull: null, sourceCodeKind: SourceCodeKind.Script);
         }
 
@@ -104,11 +106,19 @@ public async Task FileSystemReference()
         [InlineData("#r$$", false)]
         [InlineData("#r\"$$", true)]
         [InlineData(" # r \"$$", true)]
-        [InlineData(" # r \"$$\"", true)]
+        [InlineData("""
+            # r "$$"
+            """, true)]
         [InlineData(" # r \"\"$$", true)]
-        [InlineData("$$ # r \"\"", false)]
-        [InlineData(" # $$r \"\"", false)]
-        [InlineData(" # r $$\"\"", false)]
+        [InlineData("""
+            $$ # r ""
+            """, false)]
+        [InlineData("""
+            # $$r ""
+            """, false)]
+        [InlineData("""
+            # r $$""
+            """, false)]
         public void ShouldTriggerCompletion(string textWithPositionMarker, bool expectedResult)
         {
             var position = textWithPositionMarker.IndexOf("$$");
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SnippetCompletionProviderTests.cs
index 63cd73a85bf1e..12ee1993beb15 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SnippetCompletionProviderTests.cs
@@ -87,22 +87,24 @@ public async Task SnippetsInLineSpanDirective()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/968256")]
         public async Task ShowSnippetsFromOtherContext()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-class C
-{
-#if GOO
-    $$
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2""  PreprocessorSymbols=""GOO"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""CurrentDocument.cs""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                class C
+                {
+                #if GOO
+                    $$
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2"  PreprocessorSymbols="GOO">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="CurrentDocument.cs"/>
+                    </Project>
+                </Workspace>
+                """;
             await VerifyItemInLinkedFilesAsync(markup, MockSnippetInfoService.SnippetShortcut, null);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpClassSnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpClassSnippetCompletionProviderTests.cs
index 7c4b9473098fe..04ba1dd426bcb 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpClassSnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpClassSnippetCompletionProviderTests.cs
@@ -18,19 +18,23 @@ public class CSharpClassSnippetCompletionProviderTests : AbstractCSharpSnippetCo
         public async Task InsertClassSnippetInNamespaceTest()
         {
             var markupBeforeCommit =
-@"namespace Namespace
-{
-    $$
-}";
+                """
+                namespace Namespace
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"namespace Namespace
-{
-    class MyClass
-    {
-        $$
-    }
-}";
+                """
+                namespace Namespace
+                {
+                    class MyClass
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -38,17 +42,21 @@ class MyClass
         public async Task InsertClassSnippetInFileScopedNamespaceTest()
         {
             var markupBeforeCommit =
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-$$";
+                $$
+                """;
 
             var expectedCodeAfterCommit =
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-class MyClass
-{
-    $$
-}";
+                class MyClass
+                {
+                    $$
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -59,10 +67,12 @@ public async Task InsertClassSnippetTest()
 @"$$";
 
             var expectedCodeAfterCommit =
-@"class MyClass
-{
-    $$
-}";
+                """
+                class MyClass
+                {
+                    $$
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -70,15 +80,19 @@ public async Task InsertClassSnippetTest()
         public async Task InsertClassTopLevelSnippetTest()
         {
             var markupBeforeCommit =
-@"System.Console.WriteLine();
-$$";
+                """
+                System.Console.WriteLine();
+                $$
+                """;
 
             var expectedCodeAfterCommit =
-@"System.Console.WriteLine();
-class MyClass
-{
-    $$
-}";
+                """
+                System.Console.WriteLine();
+                class MyClass
+                {
+                    $$
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -86,19 +100,23 @@ class MyClass
         public async Task InsertClassSnippetInClassTest()
         {
             var markupBeforeCommit =
-@"class MyClass
-{
-    $$
-}";
+                """
+                class MyClass
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class MyClass
-{
-    class MyClass1
-    {
-        $$
-    }
-}";
+                """
+                class MyClass
+                {
+                    class MyClass1
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -106,19 +124,23 @@ class MyClass1
         public async Task InsertClassSnippetInRecordTest()
         {
             var markupBeforeCommit =
-@"record MyRecord
-{
-    $$
-}";
+                """
+                record MyRecord
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"record MyRecord
-{
-    class MyClass
-    {
-        $$
-    }
-}";
+                """
+                record MyRecord
+                {
+                    class MyClass
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -126,19 +148,23 @@ class MyClass
         public async Task InsertClassSnippetInStructTest()
         {
             var markupBeforeCommit =
-@"struct MyStruct
-{
-    $$
-}";
+                """
+                struct MyStruct
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"struct MyStruct
-{
-    class MyClass
-    {
-        $$
-    }
-}";
+                """
+                struct MyStruct
+                {
+                    class MyClass
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -146,19 +172,23 @@ class MyClass
         public async Task InsertClassSnippetInInterfaceTest()
         {
             var markupBeforeCommit =
-@"interface MyInterface
-{
-    $$
-}";
+                """
+                interface MyInterface
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"interface MyInterface
-{
-    class MyClass
-    {
-        $$
-    }
-}";
+                """
+                interface MyInterface
+                {
+                    class MyClass
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -195,10 +225,12 @@ public class MyClass
         public async Task NoClassSnippetInEnumTest()
         {
             var markupBeforeCommit =
-@"enum MyEnum
-{
-    $$
-}";
+                """
+                enum MyEnum
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -207,13 +239,15 @@ public async Task NoClassSnippetInEnumTest()
         public async Task NoClassSnippetInMethodTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -221,13 +255,15 @@ public void Method()
         public async Task NoClassSnippetInConstructorTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public Program()
-    {
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public Program()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConsoleSnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConsoleSnippetCompletionProviderTests.cs
index 7a4ffcec2b852..5812fdb407223 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConsoleSnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConsoleSnippetCompletionProviderTests.cs
@@ -20,24 +20,28 @@ public class CSharpConsoleSnippetCompletionProviderTests : AbstractCSharpSnippet
         public async Task InsertConsoleSnippetInMethodTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        Wr$$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        Wr$$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-class Program
-{
-    public void Method()
-    {
-        Console.WriteLine($$);
-    }
-}";
+                """
+                using System;
+
+                class Program
+                {
+                    public void Method()
+                    {
+                        Console.WriteLine($$);
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -45,24 +49,28 @@ public void Method()
         public async Task InsertAsyncConsoleSnippetTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public async Task MethodAsync()
-    {
-        Wr$$
-    }
-}";
+                """
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                        Wr$$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-class Program
-{
-    public async Task MethodAsync()
-    {
-        await Console.Out.WriteLineAsync($$);
-    }
-}";
+                """
+                using System;
+
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                        await Console.Out.WriteLineAsync($$);
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -70,24 +78,28 @@ public async Task MethodAsync()
         public async Task InsertConsoleSnippetGlobalTest()
         {
             var markupBeforeCommit =
-@"$$
-class Program
-{
-    public async Task MethodAsync()
-    {
-    }
-}";
+                """
+                $$
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-Console.WriteLine($$);
-class Program
-{
-    public async Task MethodAsync()
-    {
-    }
-}";
+                """
+                using System;
+
+                Console.WriteLine($$);
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -95,17 +107,18 @@ public async Task MethodAsync()
         public async Task NoConsoleSnippetInBlockNamespaceTest()
         {
             var markupBeforeCommit =
-@"
-namespace Namespace
-{
-    $$
-    class Program
-    {
-        public async Task MethodAsync()
-        {
-        }
-    }
-}";
+                """
+                namespace Namespace
+                {
+                    $$
+                    class Program
+                    {
+                        public async Task MethodAsync()
+                        {
+                        }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -113,16 +126,16 @@ public async Task MethodAsync()
         public async Task NoConsoleSnippetInFileScopedNamespaceTest()
         {
             var markupBeforeCommit =
-@"
-namespace Namespace;
-$$
-class Program
-{
-    public async Task MethodAsync()
-    {
-    }
-}
-";
+                """
+                namespace Namespace;
+                $$
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -130,26 +143,30 @@ public async Task MethodAsync()
         public async Task InsertConsoleSnippetInConstructorTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public Program()
-    {
-        var x = 5;
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public Program()
+                    {
+                        var x = 5;
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-class Program
-{
-    public Program()
-    {
-        var x = 5;
-        Console.WriteLine($$);
-    }
-}";
+                """
+                using System;
+
+                class Program
+                {
+                    public Program()
+                    {
+                        var x = 5;
+                        Console.WriteLine($$);
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -157,32 +174,36 @@ public Program()
         public async Task InsertConsoleSnippetInLocalFunctionTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var x = 5;
-        void LocalMethod()
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var x = 5;
+                        void LocalMethod()
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-class Program
-{
-    public void Method()
-    {
-        var x = 5;
-        void LocalMethod()
-        {
-            Console.WriteLine($$);
-        }
-    }
-}";
+                """
+                using System;
+
+                class Program
+                {
+                    public void Method()
+                    {
+                        var x = 5;
+                        void LocalMethod()
+                        {
+                            Console.WriteLine($$);
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -190,28 +211,32 @@ void LocalMethod()
         public async Task InsertConsoleSnippetInAnonymousFunctionTest()
         {
             var markupBeforeCommit =
-@"public delegate void Print(int value);
+                """
+                public delegate void Print(int value);
 
-static void Main(string[] args)
-{
-    Print print = delegate(int val) {
-        $$
-    };
+                static void Main(string[] args)
+                {
+                    Print print = delegate(int val) {
+                        $$
+                    };
 
-}";
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
+                """
+                using System;
 
-public delegate void Print(int value);
+                public delegate void Print(int value);
 
-static void Main(string[] args)
-{
-    Print print = delegate(int val) {
-        Console.WriteLine($$);
-    };
+                static void Main(string[] args)
+                {
+                    Print print = delegate(int val) {
+                        Console.WriteLine($$);
+                    };
 
-}";
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -219,22 +244,24 @@ static void Main(string[] args)
         public async Task InsertConsoleSnippetInParenthesizedLambdaExpressionTest()
         {
             var markupBeforeCommit =
-@"
-Func<int, int, bool> testForEquality = (x, y) =>
-{
-    $$
-    return x == y;
-};";
+                """
+                Func<int, int, bool> testForEquality = (x, y) =>
+                {
+                    $$
+                    return x == y;
+                };
+                """;
 
             var expectedCodeAfterCommit =
-@"
-using System;
-
-Func<int, int, bool> testForEquality = (x, y) =>
-{
-    Console.WriteLine($$);
-    return x == y;
-};";
+                """
+                using System;
+
+                Func<int, int, bool> testForEquality = (x, y) =>
+                {
+                    Console.WriteLine($$);
+                    return x == y;
+                };
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -242,22 +269,24 @@ public async Task InsertConsoleSnippetInParenthesizedLambdaExpressionTest()
         public async Task NoConsoleSnippetInSwitchExpression()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-       var operation = 2;  
-  
-        var result = operation switch  
-        {
-            $$
-            1 => ""Case 1"",  
-            2 => ""Case 2"",  
-            3 => ""Case 3"",  
-            4 => ""Case 4"",  
-        };
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                       var operation = 2;  
+
+                        var result = operation switch  
+                        {
+                            $$
+                            1 => "Case 1",  
+                            2 => "Case 2",  
+                            3 => "Case 3",  
+                            4 => "Case 4",  
+                        };
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -265,13 +294,15 @@ public void Method()
         public async Task NoConsoleSnippetInSingleLambdaExpression()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-       Func<int, int> f = x => $$;
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                       Func<int, int> f = x => $$;
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -279,13 +310,15 @@ public void Method()
         public async Task NoConsoleSnippetInStringTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var str = ""$$"";
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var str = "$$";
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -294,23 +327,25 @@ public void Method()
         public async Task NoConsoleSnippetInObjectInitializerTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var str = new Test($$);
-    }
-}
-
-class Test
-{
-    private string val;
-
-    public Test(string val)
-    {
-        this.val = val;
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var str = new Test($$);
+                    }
+                }
+
+                class Test
+                {
+                    private string val;
+
+                    public Test(string val)
+                    {
+                        this.val = val;
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -319,12 +354,14 @@ public Test(string val)
         public async Task NoConsoleSnippetInParameterListTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method(int x, $$)
-    {
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method(int x, $$)
+                    {
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -333,12 +370,14 @@ public void Method(int x, $$)
         public async Task NoConsoleSnippetInRecordDeclarationTest()
         {
             var markupBeforeCommit =
-@"public record Person
-{
-    $$
-    public string FirstName { get; init; } = default!;
-    public string LastName { get; init; } = default!;
-};";
+                """
+                public record Person
+                {
+                    $$
+                    public string FirstName { get; init; } = default!;
+                    public string LastName { get; init; } = default!;
+                };
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -347,13 +386,15 @@ public async Task NoConsoleSnippetInRecordDeclarationTest()
         public async Task NoConsoleSnippetInVariableDeclarationTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var x = $$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var x = $$
+                    }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -362,24 +403,28 @@ public void Method()
         public async Task InsertConsoleSnippetWithInvocationBeforeAndAfterCursorTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        Wr$$Blah
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        Wr$$Blah
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-class Program
-{
-    public void Method()
-    {
-        Console.WriteLine($$);
-    }
-}";
+                """
+                using System;
+
+                class Program
+                {
+                    public void Method()
+                    {
+                        Console.WriteLine($$);
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -387,24 +432,28 @@ public void Method()
         public async Task InsertConsoleSnippetWithInvocationUnderscoreBeforeAndAfterCursorTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        _Wr$$Blah_
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        _Wr$$Blah_
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-class Program
-{
-    public void Method()
-    {
-        Console.WriteLine($$);
-    }
-}";
+                """
+                using System;
+
+                class Program
+                {
+                    public void Method()
+                    {
+                        Console.WriteLine($$);
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -416,28 +465,32 @@ public void Method()
         public async Task InsertConsoleSnippetWithPropertyNamedConsoleTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public int Console { get; set; }
-
-    public void Method()
-    {
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public int Console { get; set; }
+
+                    public void Method()
+                    {
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-
-class Program
-{
-    public int Console { get; set; }
-
-    public void Method()
-    {
-        Console.WriteLine($$);
-    }
-}";
+                """
+                using System;
+
+                class Program
+                {
+                    public int Console { get; set; }
+
+                    public void Method()
+                    {
+                        Console.WriteLine($$);
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConstructorSnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConstructorSnippetCompletionProviderTests.cs
index bc396aef78a07..ac94c251a460a 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConstructorSnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpConstructorSnippetCompletionProviderTests.cs
@@ -22,10 +22,12 @@ public class CSharpConstructorSnippetCompletionProviderTests : AbstractCSharpSni
         public async Task ConstructorSnippetMissingInNamespace()
         {
             var markupBeforeCommit =
-@"namespace Namespace
-{
-    $$
-}";
+                """
+                namespace Namespace
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -34,9 +36,11 @@ public async Task ConstructorSnippetMissingInNamespace()
         public async Task ConstructorSnippetMissingInFilescopedNamespace()
         {
             var markupBeforeCommit =
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-$$";
+                $$
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -45,8 +49,10 @@ public async Task ConstructorSnippetMissingInFilescopedNamespace()
         public async Task ConstructorSnippetMissingInTopLevelContext()
         {
             var markupBeforeCommit =
-@"System.Console.WriteLine();
-$$";
+                """
+                System.Console.WriteLine();
+                $$
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -55,19 +61,23 @@ public async Task ConstructorSnippetMissingInTopLevelContext()
         public async Task InsertConstructorSnippetInClassTest()
         {
             var markupBeforeCommit =
-@"class MyClass
-{
-    $$
-}";
+                """
+                class MyClass
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class MyClass
-{
-    public MyClass()
-    {
-        $$
-    }
-}";
+                """
+                class MyClass
+                {
+                    public MyClass()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -75,19 +85,23 @@ public MyClass()
         public async Task InsertConstructorSnippetInAbstractClassTest()
         {
             var markupBeforeCommit =
-@"abstract class MyClass
-{
-    $$
-}";
+                """
+                abstract class MyClass
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"abstract class MyClass
-{
-    public MyClass()
-    {
-        $$
-    }
-}";
+                """
+                abstract class MyClass
+                {
+                    public MyClass()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -95,19 +109,23 @@ public MyClass()
         public async Task InsertConstructorSnippetInStructTest()
         {
             var markupBeforeCommit =
-@"struct MyStruct
-{
-    $$
-}";
+                """
+                struct MyStruct
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"struct MyStruct
-{
-    public MyStruct()
-    {
-        $$
-    }
-}";
+                """
+                struct MyStruct
+                {
+                    public MyStruct()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -115,19 +133,23 @@ public MyStruct()
         public async Task InsertConstructorSnippetInRecordTest()
         {
             var markupBeforeCommit =
-@"record MyRecord
-{
-    $$
-}";
+                """
+                record MyRecord
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"record MyRecord
-{
-    public MyRecord()
-    {
-        $$
-    }
-}";
+                """
+                record MyRecord
+                {
+                    public MyRecord()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -135,10 +157,12 @@ public MyRecord()
         public async Task ConstructorSnippetMissingInInterface()
         {
             var markupBeforeCommit =
-@"interface MyInterface
-{
-    $$
-}";
+                """
+                interface MyInterface
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -147,25 +171,29 @@ public async Task ConstructorSnippetMissingInInterface()
         public async Task InsertConstructorSnippetInNestedClassTest()
         {
             var markupBeforeCommit =
-@"class MyClass
-{
-    class MyClass1
-    {
-        $$
-    }
-}";
+                """
+                class MyClass
+                {
+                    class MyClass1
+                    {
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class MyClass
-{
-    class MyClass1
-    {
-        public MyClass1()
-        {
-            $$
-        }
-    }
-}";
+                """
+                class MyClass
+                {
+                    class MyClass1
+                    {
+                        public MyClass1()
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpElseSnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpElseSnippetCompletionProviderTests.cs
index 9ccd5a0edac62..bb6f32f9ecb10 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpElseSnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpElseSnippetCompletionProviderTests.cs
@@ -22,31 +22,35 @@ public class CSharpElseSnippetCompletionProviderTests : AbstractCSharpSnippetCom
         public async Task InsertElseSnippetInMethodTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        if (true)
-        {
-        }
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true)
+                        {
+                        }
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public void Method()
-    {
-        if (true)
-        {
-        }
-        else
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true)
+                        {
+                        }
+                        else
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -54,13 +58,15 @@ public void Method()
         public async Task NoElseSnippetInMethodWithoutIfStatementTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -68,31 +74,35 @@ public void Method()
         public async Task InsertElseSnippetGlobalTest()
         {
             var markupBeforeCommit =
-@"if (true)
-{
-}
-$$
-class Program
-{
-    public async Task MethodAsync()
-    {
-    }
-}";
+                """
+                if (true)
+                {
+                }
+                $$
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"if (true)
-{
-}
-else
-{
-    $$
-}
-class Program
-{
-    public async Task MethodAsync()
-    {
-    }
-}";
+                """
+                if (true)
+                {
+                }
+                else
+                {
+                    $$
+                }
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -100,20 +110,21 @@ public async Task MethodAsync()
         public async Task NoElseSnippetInBlockNamespaceTest()
         {
             var markupBeforeCommit =
-@"
-namespace Namespace
-{
-    if (true)
-    {
-    }
-    $$
-    class Program
-    {
-        public async Task MethodAsync()
-        {
-        }
-    }
-}";
+                """
+                namespace Namespace
+                {
+                    if (true)
+                    {
+                    }
+                    $$
+                    class Program
+                    {
+                        public async Task MethodAsync()
+                        {
+                        }
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -121,19 +132,19 @@ public async Task MethodAsync()
         public async Task NoElseSnippetInFileScopedNamespaceTest()
         {
             var markupBeforeCommit =
-@"
-namespace Namespace;
-if (true)
-{
-}
-$$
-class Program
-{
-    public async Task MethodAsync()
-    {
-    }
-}
-";
+                """
+                namespace Namespace;
+                if (true)
+                {
+                }
+                $$
+                class Program
+                {
+                    public async Task MethodAsync()
+                    {
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -141,31 +152,35 @@ public async Task MethodAsync()
         public async Task InsertElseSnippetInConstructorTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public Program()
-    {
-        if (true)
-        {
-        }
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public Program()
+                    {
+                        if (true)
+                        {
+                        }
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public Program()
-    {
-        if (true)
-        {
-        }
-        else
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public Program()
+                    {
+                        if (true)
+                        {
+                        }
+                        else
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -173,41 +188,45 @@ public Program()
         public async Task InsertElseSnippetInLocalFunctionTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var x = 5;
-        void LocalMethod()
-        {
-            if (true)
-            {
-                
-            }
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var x = 5;
+                        void LocalMethod()
+                        {
+                            if (true)
+                            {
+
+                            }
+                            $$
+                        }
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var x = 5;
-        void LocalMethod()
-        {
-            if (true)
-            {
-                
-            }
-            else
-            {
-                $$
-            }
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var x = 5;
+                        void LocalMethod()
+                        {
+                            if (true)
+                            {
+
+                            }
+                            else
+                            {
+                                $$
+                            }
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -215,27 +234,31 @@ void LocalMethod()
         public async Task InsertElseSnippetSingleLineIfWithBlockTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        if (true) {}
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true) {}
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public void Method()
-    {
-        if (true) {}
-        else
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true) {}
+                        else
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -243,29 +266,33 @@ public void Method()
         public async Task InsertElseSnippetSingleLineIfTest()
         {
             var markupBeforeCommit =
-@"using System;
-class Program
-{
-    public void Method()
-    {
-        if (true) Console.WriteLine(5);
-        $$
-    }
-}";
+                """
+                using System;
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true) Console.WriteLine(5);
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-class Program
-{
-    public void Method()
-    {
-        if (true) Console.WriteLine(5);
-        else
-        {
-            $$
-        }
-    }
-}";
+                """
+                using System;
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true) Console.WriteLine(5);
+                        else
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -273,37 +300,41 @@ public void Method()
         public async Task InsertElseSnippetNestedIfTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        if (true)
-        {
-            if (true)
-            {
-            }
-        }   
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true)
+                        {
+                            if (true)
+                            {
+                            }
+                        }   
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public void Method()
-    {
-        if (true)
-        {
-            if (true)
-            {
-            }
-        }
-        else
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        if (true)
+                        {
+                            if (true)
+                            {
+                            }
+                        }
+                        else
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpForEachSnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpForEachSnippetCompletionProviderTests.cs
index 21d3795d46c40..566d1c921db95 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpForEachSnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpForEachSnippetCompletionProviderTests.cs
@@ -18,25 +18,29 @@ public class CSharpForEachSnippetCompletionProviderTests : AbstractCSharpSnippet
         public async Task InsertForEachSnippetInMethodTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        Ins$$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        Ins$$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public void Method()
-    {
-        foreach (var item in collection)
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        foreach (var item in collection)
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -44,27 +48,31 @@ public void Method()
         public async Task InsertForEachSnippetInMethodItemUsedTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var item = 5;
-        Ins$$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var item = 5;
+                        Ins$$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var item = 5;
-        foreach (var item1 in collection)
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var item = 5;
+                        foreach (var item1 in collection)
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -72,15 +80,17 @@ public void Method()
         public async Task InsertForEachSnippetInGlobalContextTest()
         {
             var markupBeforeCommit =
-@"Ins$$
-";
+                """
+                Ins$$
+                """;
 
             var expectedCodeAfterCommit =
-@"foreach (var item in collection)
-{
-    $$
-}
-";
+                """
+                foreach (var item in collection)
+                {
+                    $$
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -88,25 +98,29 @@ public async Task InsertForEachSnippetInGlobalContextTest()
         public async Task InsertForEachSnippetInConstructorTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public Program()
-    {
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public Program()
+                    {
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public Program()
-    {
-        foreach (var item in collection)
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public Program()
+                    {
+                        foreach (var item in collection)
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -114,33 +128,37 @@ public Program()
         public async Task InsertForEachSnippetWithCollectionTest()
         {
             var markupBeforeCommit =
-@"using System;
-using System.Collections.Generic;
+                """
+                using System;
+                using System.Collections.Generic;
 
-class Program
-{
-    public Program()
-    {
-        var list = new List<int> { 1, 2, 3 };
-        $$
-    }
-}";
+                class Program
+                {
+                    public Program()
+                    {
+                        var list = new List<int> { 1, 2, 3 };
+                        $$
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"using System;
-using System.Collections.Generic;
+                """
+                using System;
+                using System.Collections.Generic;
 
-class Program
-{
-    public Program()
-    {
-        var list = new List<int> { 1, 2, 3 };
-        foreach (var item in list)
-        {
-            $$
-        }
-    }
-}";
+                class Program
+                {
+                    public Program()
+                    {
+                        var list = new List<int> { 1, 2, 3 };
+                        foreach (var item in list)
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -148,33 +166,37 @@ public Program()
         public async Task InsertForEachSnippetInLocalFunctionTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var x = 5;
-        void LocalMethod()
-        {
-            $$
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var x = 5;
+                        void LocalMethod()
+                        {
+                            $$
+                        }
+                    }
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class Program
-{
-    public void Method()
-    {
-        var x = 5;
-        void LocalMethod()
-        {
-            foreach (var item in collection)
-            {
-                $$
-            }
-        }
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        var x = 5;
+                        void LocalMethod()
+                        {
+                            foreach (var item in collection)
+                            {
+                                $$
+                            }
+                        }
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -182,25 +204,29 @@ void LocalMethod()
         public async Task InsertForEachSnippetInAnonymousFunctionTest()
         {
             var markupBeforeCommit =
-@"public delegate void Print(int value);
-static void Main(string[] args)
-{
-    Print print = delegate(int val) {
-        $$
-    };
-}";
+                """
+                public delegate void Print(int value);
+                static void Main(string[] args)
+                {
+                    Print print = delegate(int val) {
+                        $$
+                    };
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"public delegate void Print(int value);
-static void Main(string[] args)
-{
-    Print print = delegate(int val) {
-        foreach (var item in args)
-        {
-            $$
-        }
-    };
-}";
+                """
+                public delegate void Print(int value);
+                static void Main(string[] args)
+                {
+                    Print print = delegate(int val) {
+                        foreach (var item in args)
+                        {
+                            $$
+                        }
+                    };
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -208,21 +234,25 @@ static void Main(string[] args)
         public async Task InsertForEachSnippetInParenthesizedLambdaExpressionRegularTest()
         {
             var markupBeforeCommit =
-@"Func<int, int, bool> testForEquality = (x, y) =>
-{
-    $$
-    return x == y;
-};";
+                """
+                Func<int, int, bool> testForEquality = (x, y) =>
+                {
+                    $$
+                    return x == y;
+                };
+                """;
 
             var expectedCodeAfterCommit =
-@"Func<int, int, bool> testForEquality = (x, y) =>
-{
-    foreach (var item in args)
-    {
-        $$
-    }
-    return x == y;
-};";
+                """
+                Func<int, int, bool> testForEquality = (x, y) =>
+                {
+                    foreach (var item in args)
+                    {
+                        $$
+                    }
+                    return x == y;
+                };
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit, sourceCodeKind: SourceCodeKind.Regular);
         }
 
@@ -230,21 +260,25 @@ public async Task InsertForEachSnippetInParenthesizedLambdaExpressionRegularTest
         public async Task InsertForEachSnippetInParenthesizedLambdaExpressionScriptTest()
         {
             var markupBeforeCommit =
-@"Func<int, int, bool> testForEquality = (x, y) =>
-{
-    $$
-    return x == y;
-};";
+                """
+                Func<int, int, bool> testForEquality = (x, y) =>
+                {
+                    $$
+                    return x == y;
+                };
+                """;
 
             var expectedCodeAfterCommit =
-@"Func<int, int, bool> testForEquality = (x, y) =>
-{
-    foreach (var item in collection)
-    {
-        $$
-    }
-    return x == y;
-};";
+                """
+                Func<int, int, bool> testForEquality = (x, y) =>
+                {
+                    foreach (var item in collection)
+                    {
+                        $$
+                    }
+                    return x == y;
+                };
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit, sourceCodeKind: SourceCodeKind.Script);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpInterfaceSnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpInterfaceSnippetCompletionProviderTests.cs
index 8d0cba468dfed..1d363788bef50 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpInterfaceSnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpInterfaceSnippetCompletionProviderTests.cs
@@ -18,19 +18,23 @@ public class CSharpInterfaceSnippetCompletionProviderTests : AbstractCSharpSnipp
         public async Task InsertInterfaceSnippetInNamespaceTest()
         {
             var markupBeforeCommit =
-@"namespace Namespace
-{
-    $$
-}";
+                """
+                namespace Namespace
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"namespace Namespace
-{
-    interface MyInterface
-    {
-        $$
-    }
-}";
+                """
+                namespace Namespace
+                {
+                    interface MyInterface
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -38,17 +42,21 @@ interface MyInterface
         public async Task InsertInterfaceSnippetInFileScopedNamespaceTest()
         {
             var markupBeforeCommit =
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-$$";
+                $$
+                """;
 
             var expectedCodeAfterCommit =
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-interface MyInterface
-{
-    $$
-}";
+                interface MyInterface
+                {
+                    $$
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -59,10 +67,12 @@ public async Task InsertInterfaceSnippetTest()
 @"$$";
 
             var expectedCodeAfterCommit =
-@"interface MyInterface
-{
-    $$
-}";
+                """
+                interface MyInterface
+                {
+                    $$
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -70,15 +80,19 @@ public async Task InsertInterfaceSnippetTest()
         public async Task InsertInterfaceTopLevelSnippetTest()
         {
             var markupBeforeCommit =
-@"System.Console.WriteLine();
-$$";
+                """
+                System.Console.WriteLine();
+                $$
+                """;
 
             var expectedCodeAfterCommit =
-@"System.Console.WriteLine();
-interface MyInterface
-{
-    $$
-}";
+                """
+                System.Console.WriteLine();
+                interface MyInterface
+                {
+                    $$
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -86,19 +100,23 @@ interface MyInterface
         public async Task InsertInterfaceSnippetInClassTest()
         {
             var markupBeforeCommit =
-@"class MyClass
-{
-    $$
-}";
+                """
+                class MyClass
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"class MyClass
-{
-    interface MyInterface
-    {
-        $$
-    }
-}";
+                """
+                class MyClass
+                {
+                    interface MyInterface
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -106,19 +124,23 @@ interface MyInterface
         public async Task InsertInterfaceSnippetInRecordTest()
         {
             var markupBeforeCommit =
-@"record MyRecord
-{
-    $$
-}";
+                """
+                record MyRecord
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"record MyRecord
-{
-    interface MyInterface
-    {
-        $$
-    }
-}";
+                """
+                record MyRecord
+                {
+                    interface MyInterface
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -126,19 +148,23 @@ interface MyInterface
         public async Task InsertInterfaceSnippetInStructTest()
         {
             var markupBeforeCommit =
-@"struct MyStruct
-{
-    $$
-}";
+                """
+                struct MyStruct
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"struct MyStruct
-{
-    interface MyInterface
-    {
-        $$
-    }
-}";
+                """
+                struct MyStruct
+                {
+                    interface MyInterface
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -146,19 +172,23 @@ interface MyInterface
         public async Task InsertInterfaceSnippetInInterfaceTest()
         {
             var markupBeforeCommit =
-@"interface MyInterface
-{
-    $$
-}";
+                """
+                interface MyInterface
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"interface MyInterface
-{
-    interface MyInterface1
-    {
-        $$
-    }
-}";
+                """
+                interface MyInterface
+                {
+                    interface MyInterface1
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -195,10 +225,12 @@ public interface MyInterface
         public async Task NoInterfaceSnippetInEnumTest()
         {
             var markupBeforeCommit =
-@"enum MyEnum
-{
-    $$
-}";
+                """
+                enum MyEnum
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -207,13 +239,15 @@ public async Task NoInterfaceSnippetInEnumTest()
         public async Task NoInteraceSnippetInMethodTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public void Method()
-    {
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public void Method()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
@@ -221,13 +255,15 @@ public void Method()
         public async Task NoInterfaceSnippetInConstructorTest()
         {
             var markupBeforeCommit =
-@"class Program
-{
-    public Program()
-    {
-        $$
-    }
-}";
+                """
+                class Program
+                {
+                    public Program()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpStructSnippetCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpStructSnippetCompletionProviderTests.cs
index 93a2f5eeb8e4a..a859ccaf6a487 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpStructSnippetCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/Snippets/CSharpStructSnippetCompletionProviderTests.cs
@@ -18,19 +18,23 @@ public class CSharpStructSnippetCompletionProviderTests : AbstractCSharpSnippetC
         public async Task InsertStructSnippetInNamespaceTest()
         {
             var markupBeforeCommit =
-@"namespace Namespace
-{
-    $$
-}";
+                """
+                namespace Namespace
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"namespace Namespace
-{
-    struct MyStruct
-    {
-        $$
-    }
-}";
+                """
+                namespace Namespace
+                {
+                    struct MyStruct
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
 
@@ -38,17 +42,21 @@ struct MyStruct
         public async Task InsertStructSnippetInFileScopedNamespaceTest()
         {
             var markupBeforeCommit =
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-$$";
+                $$
+                """;
 
             var expectedCodeAfterCommit =
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-struct MyStruct
-{
-    $$
-}"
+                struct MyStruct
+                {
+                    $$
+                }
+                """
 ;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
@@ -60,10 +68,12 @@ public async Task InsertStructSnippetTest()
 @"$$";
 
             var expectedCodeAfterCommit =
-@"struct MyStruct
-{
-    $$
-}"
+                """
+                struct MyStruct
+                {
+                    $$
+                }
+                """
 ;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
@@ -72,15 +82,19 @@ public async Task InsertStructSnippetTest()
         public async Task InsertStructTopLevelSnippetTest()
         {
             var markupBeforeCommit =
-@"System.Console.WriteLine();
-$$";
+                """
+                System.Console.WriteLine();
+                $$
+                """;
 
             var expectedCodeAfterCommit =
-@"System.Console.WriteLine();
-struct MyStruct
-{
-    $$
-}"
+                """
+                System.Console.WriteLine();
+                struct MyStruct
+                {
+                    $$
+                }
+                """
 ;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
@@ -89,20 +103,24 @@ struct MyStruct
         public async Task InsertStructSnippetInClassTest()
         {
             var markupBeforeCommit =
-@"struct MyClass
-{
-    $$
-}"
+                """
+                struct MyClass
+                {
+                    $$
+                }
+                """
 ;
 
             var expectedCodeAfterCommit =
-@"struct MyClass
-{
-    struct MyStruct
-    {
-        $$
-    }
-}"
+                """
+                struct MyClass
+                {
+                    struct MyStruct
+                    {
+                        $$
+                    }
+                }
+                """
 ;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
@@ -111,19 +129,23 @@ struct MyStruct
         public async Task InsertStructSnippetInRecordTest()
         {
             var markupBeforeCommit =
-@"record MyRecord
-{
-    $$
-}";
+                """
+                record MyRecord
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"record MyRecord
-{
-    struct MyStruct
-    {
-        $$
-    }
-}"
+                """
+                record MyRecord
+                {
+                    struct MyStruct
+                    {
+                        $$
+                    }
+                }
+                """
 ;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
@@ -132,19 +154,23 @@ struct MyStruct
         public async Task InsertStructSnippetInStructTest()
         {
             var markupBeforeCommit =
-@"struct MyStruct
-{
-    $$
-}";
+                """
+                struct MyStruct
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"struct MyStruct
-{
-    struct MyStruct1
-    {
-        $$
-    }
-}"
+                """
+                struct MyStruct
+                {
+                    struct MyStruct1
+                    {
+                        $$
+                    }
+                }
+                """
 ;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
@@ -153,19 +179,23 @@ struct MyStruct1
         public async Task InsertStructSnippetInInterfaceTest()
         {
             var markupBeforeCommit =
-@"interface MyInterface
-{
-    $$
-}";
+                """
+                interface MyInterface
+                {
+                    $$
+                }
+                """;
 
             var expectedCodeAfterCommit =
-@"interface MyInterface
-{
-    struct MyStruct
-    {
-        $$
-    }
-}"
+                """
+                interface MyInterface
+                {
+                    struct MyStruct
+                    {
+                        $$
+                    }
+                }
+                """
 ;
             await VerifyCustomCommitProviderAsync(markupBeforeCommit, ItemToCommit, expectedCodeAfterCommit);
         }
@@ -204,10 +234,12 @@ public struct MyStruct
         public async Task NoStructSnippetInEnumTest()
         {
             var markupBeforeCommit =
-@"enum MyEnum
-{
-    $$
-}";
+                """
+                enum MyEnum
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -216,13 +248,15 @@ public async Task NoStructSnippetInEnumTest()
         public async Task NoStructSnippetInMethodTest()
         {
             var markupBeforeCommit =
-@"struct Program
-{
-    public void Method()
-    {
-        $$
-    }
-}"
+                """
+                struct Program
+                {
+                    public void Method()
+                    {
+                        $$
+                    }
+                }
+                """
 ;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
@@ -231,13 +265,15 @@ public void Method()
         public async Task NoStructSnippetInConstructorTest()
         {
             var markupBeforeCommit =
-@"struct Program
-{
-    public Program()
-    {
-        $$
-    }
-}"
+                """
+                struct Program
+                {
+                    public Program()
+                    {
+                        $$
+                    }
+                }
+                """
 ;
             await VerifyItemIsAbsentAsync(markupBeforeCommit, ItemToCommit);
         }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SpeculativeTCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SpeculativeTCompletionProviderTests.cs
index 15346aaa67a8b..42fe1c0e06ed3 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SpeculativeTCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SpeculativeTCompletionProviderTests.cs
@@ -23,11 +23,12 @@ internal override Type GetCompletionProviderType()
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task IsCommitCharacterTest()
         {
-            const string markup = @"
-class C
-{
-    $$
-}";
+            const string markup = """
+                class C
+                {
+                    $$
+                }
+                """;
 
             await VerifyCommonCommitCharactersAsync(markup, textTypedSoFar: "");
         }
@@ -39,11 +40,12 @@ public void IsTextualTriggerCharacterTest()
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task SendEnterThroughToEditorTest()
         {
-            const string markup = @"
-class C
-{
-    $$
-}";
+            const string markup = """
+                class C
+                {
+                    $$
+                }
+                """;
 
             await VerifySendEnterThroughToEnterAsync(markup, "T", sendThroughEnterOption: EnterKeyRule.Never, expected: false);
             await VerifySendEnterThroughToEnterAsync(markup, "T", sendThroughEnterOption: EnterKeyRule.AfterFullyTypedWord, expected: true);
@@ -53,11 +55,12 @@ class C
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InClass()
         {
-            var markup = @"
-class C
-{
-    $$
-}";
+            var markup = """
+                class C
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -65,11 +68,12 @@ class C
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InInterface()
         {
-            var markup = @"
-interface I
-{
-    $$
-}";
+            var markup = """
+                interface I
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -77,11 +81,12 @@ interface I
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InStruct()
         {
-            var markup = @"
-struct S
-{
-    $$
-}";
+            var markup = """
+                struct S
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -89,11 +94,12 @@ struct S
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task NotInNamespace()
         {
-            var markup = @"
-namespace N
-{
-    $$
-}";
+            var markup = """
+                namespace N
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -101,11 +107,12 @@ namespace N
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task NotInEnum()
         {
-            var markup = @"
-enum E
-{
-    $$
-}";
+            var markup = """
+                enum E
+                {
+                    $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -113,11 +120,12 @@ enum E
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task AfterDelegate()
         {
-            var markup = @"
-class C
-{
-    delegate $$
-}";
+            var markup = """
+                class C
+                {
+                    delegate $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -125,11 +133,12 @@ class C
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task NotAfterVoid()
         {
-            var markup = @"
-class C
-{
-    void $$
-}";
+            var markup = """
+                class C
+                {
+                    void $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -137,11 +146,12 @@ class C
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task NotAfterInt()
         {
-            var markup = @"
-class C
-{
-    int $$
-}";
+            var markup = """
+                class C
+                {
+                    int $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -149,12 +159,13 @@ class C
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InGeneric()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -163,12 +174,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37224")]
         public async Task InRef0()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -177,12 +189,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37224")]
         public async Task InRef1()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref T$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref T$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -191,12 +204,13 @@ ref T$$
         [WorkItem("https://github.com/dotnet/roslyn/issues/37224")]
         public async Task InRefGeneric0()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -205,12 +219,13 @@ ref Func<$$
         [WorkItem("https://github.com/dotnet/roslyn/issues/37224")]
         public async Task InRefGeneric1()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref Func<$$>
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref Func<$$>
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -219,12 +234,13 @@ ref Func<$$>
         [WorkItem("https://github.com/dotnet/roslyn/issues/37224")]
         public async Task InRefGeneric2()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref Func<T$$>
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref Func<T$$>
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -233,12 +249,13 @@ ref Func<T$$>
         [WorkItem("https://github.com/dotnet/roslyn/issues/37224")]
         public async Task InRefGeneric3()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref Func<int, $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref Func<int, $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -247,12 +264,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37224")]
         public async Task InRefReadonlyGeneric()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref readonly Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref readonly Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -261,12 +279,13 @@ ref readonly Func<$$
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InQualifiedGeneric0()
         {
-            var markup = @"
-using System;
-class C
-{
-    System.Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    System.Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -275,12 +294,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InQualifiedGeneric1()
         {
-            var markup = @"
-using System;
-class C
-{
-    System.Collections.Generic.List<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    System.Collections.Generic.List<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -290,12 +310,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InRefAndQualifiedGeneric0()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref System.Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref System.Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -305,12 +326,13 @@ ref System.Func<$$
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InRefAndQualifiedGeneric1()
         {
-            var markup = @"
-using System;
-class C
-{
-    internal ref System.Func<int,$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    internal ref System.Func<int,$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -320,12 +342,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InRefAndQualifiedNestedGeneric0()
         {
-            var markup = @"
-using System;
-class C
-{
-    partial ref System.Func<Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    partial ref System.Func<Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -335,12 +358,13 @@ partial ref System.Func<Func<$$
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InRefAndQualifiedNestedGeneric1()
         {
-            var markup = @"
-using System;
-class C
-{
-    private ref Func<System.Func<int,$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    private ref Func<System.Func<int,$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -350,12 +374,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InRefAndQualifiedNestedGeneric2()
         {
-            var markup = @"
-using System;
-class C
-{
-    public ref Func<int, System.Func<int,$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    public ref Func<int, System.Func<int,$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -365,12 +390,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37268")]
         public async Task InRefAndQualifiedNestedGeneric3()
         {
-            var markup = @"
-using System;
-class C
-{
-    private protected ref Func<int, System.Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    private protected ref Func<int, System.Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -379,12 +405,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InTuple0()
         {
-            var markup = @"
-using System;
-class C
-{
-    protected ($$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    protected ($$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -393,15 +420,16 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task TupleInMethod0()
         {
-            var markup = @"
-using System;
-class C
-{
-    void M()
-    {
-        ($$
-    }
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        ($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -410,16 +438,17 @@ void M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task TupleInMethod1()
         {
-            var markup = @"
-using System;
-class C
-{
-    void M()
-    {
-        var a = 0;
-        ($$
-    }
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        var a = 0;
+                        ($$
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -428,15 +457,16 @@ void M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task TupleInMethod2()
         {
-            var markup = @"
-using System;
-class C
-{
-    void M()
-    {
-        ($$)
-    }
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        ($$)
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "T");
         }
 
@@ -444,19 +474,20 @@ void M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task TupleInMethod3()
         {
-            var markup = @"
-using System;
-class C
-{
-    void M()
-    {
-        var a = 0;
+            var markup = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        var a = 0;
 
-        (T$$)
+                        (T$$)
 
-        a = 1;
-    }
-}";
+                        a = 1;
+                    }
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -465,12 +496,13 @@ void M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InTupleNot0()
         {
-            var markup = @"
-using System;
-class C
-{
-    protected sealed (int $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    protected sealed (int $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -479,12 +511,13 @@ protected sealed (int $$
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InTuple1()
         {
-            var markup = @"
-using System;
-class C
-{
-    sealed (int, $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    sealed (int, $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -493,12 +526,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InTupleNot1()
         {
-            var markup = @"
-using System;
-class C
-{
-    virtual (int x, C $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    virtual (int x, C $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -507,12 +541,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InTupleGeneric0()
         {
-            var markup = @"
-using System;
-class C
-{
-    (Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    (Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -521,12 +556,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InTupleGeneric1()
         {
-            var markup = @"
-using System;
-class C
-{
-    (int, Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    (int, Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -535,12 +571,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InTupleGeneric2()
         {
-            var markup = @"
-using System;
-class C
-{
-    (int, Func<int, $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    (int, Func<int, $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -549,12 +586,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InGenericTuple0()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<($$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<($$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -563,12 +601,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InGenericTuple1()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<int, ($$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<int, ($$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -577,12 +616,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InGenericTuple1Not()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<int, (T $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<int, (T $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -591,12 +631,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InGenericTuple2()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<(int, $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<(int, $$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -605,12 +646,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InGenericTuple2Not()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<(C c, int $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<(C c, int $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -619,12 +661,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InGenericTuple3()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<int, (int,$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<int, (int,$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -633,12 +676,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InGenericTuple3Not()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<C, (int, C $$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<C, (int, C $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -647,12 +691,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InRefTupleQualifiedNestedGeneric0()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref (Func<System.Func<int,$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref (Func<System.Func<int,$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -661,12 +706,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InRefTupleQualifiedNestedGeneric1()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref (C c, Func<System.Func<int,$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref (C c, Func<System.Func<int,$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -675,12 +721,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InRefTupleQualifiedNestedGeneric2()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref (C c, Func<int, System.Func<(int,T$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref (C c, Func<int, System.Func<(int,T$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -689,12 +736,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InRefTupleQualifiedNestedGeneric3()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref (C c, System.Func<Func<int,(T$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref (C c, System.Func<Func<int,(T$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -703,12 +751,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InRefTupleQualifiedNestedGeneric4()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref (System.Func<(int,C), (Func<int,T$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref (System.Func<(int,C), (Func<int,T$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -717,12 +766,13 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InRefTupleQualifiedNestedGeneric5()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref readonly (System.Func<(int, (C, (Func<int,T$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref readonly (System.Func<(int, (C, (Func<int,T$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -731,12 +781,13 @@ ref readonly (System.Func<(int, (C, (Func<int,T$$
         [WorkItem("https://github.com/dotnet/roslyn/issues/37361")]
         public async Task InRefTupleQualifiedNestedGeneric6()
         {
-            var markup = @"
-using System;
-class C
-{
-    ref readonly (System.Collections.Generic.List<(int, (C, (Func<int,T$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    ref readonly (System.Collections.Generic.List<(int, (C, (Func<int,T$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -744,12 +795,13 @@ ref readonly (System.Collections.Generic.List<(int, (C, (Func<int,T$$
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InNestedGeneric1()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<Func<$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<Func<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -757,12 +809,13 @@ class C
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InNestedGeneric2()
         {
-            var markup = @"
-using System;
-class C
-{
-    Func<Func<int,$$
-}";
+            var markup = """
+                using System;
+                class C
+                {
+                    Func<Func<int,$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -794,10 +847,10 @@ public async Task NotAfterIntInScript()
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InGenericInScript()
         {
-            var markup = @"
-using System;
-Func<$$
-";
+            var markup = """
+                using System;
+                Func<$$
+                """;
 
             await VerifyItemExistsAsync(markup, "T", expectedDescriptionOrNull: null, sourceCodeKind: SourceCodeKind.Script);
         }
@@ -805,10 +858,10 @@ public async Task InGenericInScript()
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InNestedGenericInScript1()
         {
-            var markup = @"
-using System;
-Func<Func<$$
-";
+            var markup = """
+                using System;
+                Func<Func<$$
+                """;
 
             await VerifyItemExistsAsync(markup, "T", expectedDescriptionOrNull: null, sourceCodeKind: SourceCodeKind.Script);
         }
@@ -816,10 +869,10 @@ public async Task InNestedGenericInScript1()
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task InNestedGenericInScript2()
         {
-            var markup = @"
-using System;
-Func<Func<int,$$
-";
+            var markup = """
+                using System;
+                Func<Func<int,$$
+                """;
 
             await VerifyItemExistsAsync(markup, "T", expectedDescriptionOrNull: null, sourceCodeKind: SourceCodeKind.Script);
         }
@@ -827,11 +880,12 @@ public async Task InNestedGenericInScript2()
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task NotInComment()
         {
-            var markup = @"
-class C
-{
-    // $$
-}";
+            var markup = """
+                class C
+                {
+                    // $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -839,14 +893,15 @@ class C
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task NotInXmlDocComment()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// $$
-    /// </summary>
-    void Goo() { }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// $$
+                    /// </summary>
+                    void Goo() { }
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -854,12 +909,13 @@ void Goo() { }
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task AfterAsyncTask()
         {
-            var markup = @"
-using System.Threading.Tasks;
-class Program
-{
-    async Task<$$
-}";
+            var markup = """
+                using System.Threading.Tasks;
+                class Program
+                {
+                    async Task<$$
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -867,12 +923,13 @@ async Task<$$
         [Fact, Trait(Traits.Feature, Traits.Features.Completion)]
         public async Task NotOkAfterAsync()
         {
-            var markup = @"
-using System.Threading.Tasks;
-class Program
-{
-    async $$
-}";
+            var markup = """
+                using System.Threading.Tasks;
+                class Program
+                {
+                    async $$
+                }
+                """;
 
             await VerifyItemIsAbsentAsync(markup, "T");
         }
@@ -881,28 +938,30 @@ class Program
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/968256")]
         public async Task UnionOfItemsFromBothContexts()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""CurrentDocument.cs""><![CDATA[
-class C
-{
-#if GOO
-    void goo() {
-#endif
-
-$$
-
-#if GOO
-    }
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""CurrentDocument.cs""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="CurrentDocument.cs"><![CDATA[
+                class C
+                {
+                #if GOO
+                    void goo() {
+                #endif
+
+                $$
+
+                #if GOO
+                    }
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="CurrentDocument.cs"/>
+                    </Project>
+                </Workspace>
+                """;
             await VerifyItemInLinkedFilesAsync(markup, "T", null);
         }
 
@@ -910,12 +969,13 @@ void goo() {
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1020654")]
         public async Task AfterAsyncTaskWithBraceCompletion()
         {
-            var markup = @"
-using System.Threading.Tasks;
-class Program
-{
-    async Task<$$>
-}";
+            var markup = """
+                using System.Threading.Tasks;
+                class Program
+                {
+                    async Task<$$>
+                }
+                """;
 
             await VerifyItemExistsAsync(markup, "T");
         }
@@ -924,14 +984,15 @@ async Task<$$>
         [CompilerTrait(CompilerFeature.LocalFunctions)]
         public async Task LocalFunctionReturnType()
         {
-            var markup = @"
-class C
-{
-    public void M()
-    {
-        $$
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public void M()
+                    {
+                        $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "T");
         }
 
@@ -939,14 +1000,15 @@ public void M()
         [CompilerTrait(CompilerFeature.LocalFunctions)]
         public async Task LocalFunctionAfterAyncTask()
         {
-            var markup = @"
-class C
-{
-    public void M()
-    {
-        async Task<$$>
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public void M()
+                    {
+                        async Task<$$>
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "T");
         }
 
@@ -954,14 +1016,15 @@ async Task<$$>
         [CompilerTrait(CompilerFeature.LocalFunctions)]
         public async Task LocalFunctionAfterAsync()
         {
-            var markup = @"
-class C
-{
-    public void M()
-    {
-        async $$
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public void M()
+                    {
+                        async $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "T");
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs
index 5331f2eb9f0c0..953fb54360dc9 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SuggestionModeCompletionProviderTests.cs
@@ -39,16 +39,17 @@ public async Task AfterFirstImplicitArgument()
         [Fact]
         public async Task AfterFirstImplicitArgumentInMethodCall()
         {
-            var markup = @"class c
-{
-    private void bar(Func<int, int, bool> f) { }
-    
-    private void goo()
-    {
-        bar((x, i $$
-    }
-}
-";
+            var markup = """
+                class c
+                {
+                    private void bar(Func<int, int, bool> f) { }
+
+                    private void goo()
+                    {
+                        bar((x, i $$
+                    }
+                }
+                """;
             // The right-hand-side parses like a possible deconstruction or tuple type
             await VerifyBuilderAsync(markup);
         }
@@ -56,16 +57,17 @@ private void goo()
         [Fact]
         public async Task AfterFirstExplicitArgumentInMethodCall()
         {
-            var markup = @"class c
-{
-    private void bar(Func<int, int, bool> f) { }
-    
-    private void goo()
-    {
-        bar((int x, i $$
-    }
-}
-";
+            var markup = """
+                class c
+                {
+                    private void bar(Func<int, int, bool> f) { }
+
+                    private void goo()
+                    {
+                        bar((int x, i $$
+                    }
+                }
+                """;
             // Could be a deconstruction expression
             await VerifyBuilderAsync(markup);
         }
@@ -73,18 +75,19 @@ private void goo()
         [Fact]
         public async Task DelegateTypeExpected1()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class c
-{
-    private void bar(Func<int, int, bool> f) { }
-    
-    private void goo()
-    {
-        bar($$
-    }
-}
-";
+                class c
+                {
+                    private void bar(Func<int, int, bool> f) { }
+
+                    private void goo()
+                    {
+                        bar($$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
@@ -95,586 +98,659 @@ public async Task DelegateTypeExpected2()
         [Fact]
         public async Task ObjectInitializerDelegateType()
         {
-            var markup = @"using System;
-using System.Collections.Generic;
-using System.Linq;
+            var markup = """
+                using System;
+                using System.Collections.Generic;
+                using System.Linq;
 
-class Program
-{
-    public Func<int> myfunc { get; set; }
-}
+                class Program
+                {
+                    public Func<int> myfunc { get; set; }
+                }
 
-class a
-{
-    void goo()
-    {
-        var b = new Program() { myfunc = $$
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        var b = new Program() { myfunc = $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/817145")]
         public async Task ExplicitArrayInitializer()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo()
-    {
-        Func<int, int>[] myfunc = new Func<int, int>[] { $$;
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        Func<int, int>[] myfunc = new Func<int, int>[] { $$;
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task ImplicitArrayInitializerUnknownType()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo()
-    {
-        var a = new [] { $$;
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        var a = new [] { $$;
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task ImplicitArrayInitializerKnownDelegateType()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo()
-    {
-        var a = new [] { x => 2 * x, $$
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        var a = new [] { x => 2 * x, $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TernaryOperatorUnknownType()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo()
-    {
-        var a = true ? $$
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        var a = true ? $$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TernaryOperatorKnownDelegateType1()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo()
-    {
-        var a = true ? x => x * 2 : $$
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        var a = true ? x => x * 2 : $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TernaryOperatorKnownDelegateType2()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo()
-    {
-        Func<int, int> a = true ? $$
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        Func<int, int> a = true ? $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task OverloadTakesADelegate1()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo(int a) { }
-    void goo(Func<int, int> a) { }
+                class a
+                {
+                    void goo(int a) { }
+                    void goo(Func<int, int> a) { }
 
-    void bar()
-    {
-        this.goo($$
-    }
-}";
+                    void bar()
+                    {
+                        this.goo($$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task OverloadTakesDelegate2()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo(int i, int a) { }
-    void goo(int i, Func<int, int> a) { }
+                class a
+                {
+                    void goo(int i, int a) { }
+                    void goo(int i, Func<int, int> a) { }
 
-    void bar()
-    {
-        this.goo(1, $$
-    }
-}";
+                    void bar()
+                    {
+                        this.goo(1, $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task ExplicitCastToDelegate()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
+                class a
+                {
 
-    void bar()
-    {
-        (Func<int, int>) ($$
-    }
-}";
+                    void bar()
+                    {
+                        (Func<int, int>) ($$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/860580")]
         public async Task ReturnStatement()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    Func<int, int> bar()
-    {
-        return $$
-    }
-}";
+                class a
+                {
+                    Func<int, int> bar()
+                    {
+                        return $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task BuilderInAnonymousType1()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    int bar()
-    {
-        var q = new {$$
-    }
-}";
+                class a
+                {
+                    int bar()
+                    {
+                        var q = new {$$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task BuilderInAnonymousType2()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    int bar()
-    {
-        var q = new {$$ 1, 2 };
-    }
-}";
+                class a
+                {
+                    int bar()
+                    {
+                        var q = new {$$ 1, 2 };
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task BuilderInAnonymousType3()
         {
-            var markup = @"using System;
-class a
-{
-    int bar()
-    {
-        var q = new {Name = 1, $$ };
-    }
-}";
+            var markup = """
+                using System;
+                class a
+                {
+                    int bar()
+                    {
+                        var q = new {Name = 1, $$ };
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task BuilderInFromClause()
         {
-            var markup = @"using System;
-using System.Linq;
+            var markup = """
+                using System;
+                using System.Linq;
 
-class a
-{
-    int bar()
-    {
-        var q = from $$
-    }
-}";
+                class a
+                {
+                    int bar()
+                    {
+                        var q = from $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup.ToString());
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/823968")]
         public async Task BuilderInJoinClause()
         {
-            var markup = @"using System;
-using System.Linq;
-using System.Collections.Generic;
+            var markup = """
+                using System;
+                using System.Linq;
+                using System.Collections.Generic;
 
-class a
-{
-    int bar()
-    {
-        var list = new List<int>();
-        var q = from a in list
-                join $$
-    }
-}";
+                class a
+                {
+                    int bar()
+                    {
+                        var list = new List<int>();
+                        var q = from a in list
+                                join $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup.ToString());
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544290")]
         public async Task ParenthesizedLambdaArgument()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        Console.CancelKeyPress += new ConsoleCancelEventHandler((a$$, e) => { });
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Console.CancelKeyPress += new ConsoleCancelEventHandler((a$$, e) => { });
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544379")]
         public async Task IncompleteParenthesizedLambdaArgument()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        Console.CancelKeyPress += new ConsoleCancelEventHandler((a$$
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Console.CancelKeyPress += new ConsoleCancelEventHandler((a$$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544379")]
         public async Task IncompleteNestedParenthesizedLambdaArgument()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        Console.CancelKeyPress += new ConsoleCancelEventHandler(((a$$
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Console.CancelKeyPress += new ConsoleCancelEventHandler(((a$$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task ParenthesizedExpressionInVarDeclaration()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var x = (a$$
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = (a$$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24432")]
         public async Task TestInObjectCreation()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main()
-    {
-        Program x = new P$$
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main()
+                    {
+                        Program x = new P$$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24432")]
         public async Task TestInArrayCreation()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main()
-    {
-        Program[] x = new $$
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main()
+                    {
+                        Program[] x = new $$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24432")]
         public async Task TestInArrayCreation2()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main()
-    {
-        Program[] x = new Pr$$
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main()
+                    {
+                        Program[] x = new Pr$$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TupleExpressionInVarDeclaration()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var x = (a$$, b)
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = (a$$, b)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TupleExpressionInVarDeclaration2()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var x = (a, b$$)
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = (a, b$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task IncompleteLambdaInActionDeclaration()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        System.Action x = (a$$, b)
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        System.Action x = (a$$, b)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TupleWithNamesInActionDeclaration()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        System.Action x = (a$$, b: b)
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        System.Action x = (a$$, b: b)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TupleWithNamesInActionDeclaration2()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        System.Action x = (a: a, b$$)
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        System.Action x = (a: a, b$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact]
         public async Task TupleWithNamesInVarDeclaration()
         {
-            var markup = @"using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var x = (a: a, b$$)
-    }
-}";
+            var markup = """
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = (a: a, b$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/546363")]
         public async Task BuilderForLinqExpression()
         {
-            var markup = @"using System;
-using System.Linq.Expressions;
- 
-public class Class
-{
-    public void Goo(Expression<Action<int>> arg)
-    {
-        Goo($$
-    }
-}";
+            var markup = """
+                using System;
+                using System.Linq.Expressions;
+
+                public class Class
+                {
+                    public void Goo(Expression<Action<int>> arg)
+                    {
+                        Goo($$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/546363")]
         public async Task NotInTypeParameter()
         {
-            var markup = @"using System;
-using System.Linq.Expressions;
- 
-public class Class
-{
-    public void Goo(Expression<Action<int>> arg)
-    {
-        Enumerable.Empty<$$
-    }
-}";
+            var markup = """
+                using System;
+                using System.Linq.Expressions;
+
+                public class Class
+                {
+                    public void Goo(Expression<Action<int>> arg)
+                    {
+                        Enumerable.Empty<$$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/611477")]
         public async Task ExtensionMethodFaultTolerance()
         {
-            var markup = @"using System;
-using System.Collections;
-using System.Collections.Generic;
-using System.Linq;
- 
-namespace Outer
-{
-    public struct ImmutableArray<T> : IEnumerable<T>
-    {
-        public IEnumerator<T> GetEnumerator()
-        {
-            throw new NotImplementedException();
-        }
- 
-        IEnumerator IEnumerable.GetEnumerator()
-        {
-            throw new NotImplementedException();
-        }
-    }
- 
-    public static class ReadOnlyArrayExtensions
-    {
-        public static ImmutableArray<TResult> Select<T, TResult>(this ImmutableArray<T> array, Func<T, TResult> selector)
-        {
-            throw new NotImplementedException();
-        }
-    }
- 
-    namespace Inner
-    {
-        class Program
-        {
-            static void Main(string[] args)
-            {
-                args.Select($$
-            }
-        }
-    }
-}
-";
+            var markup = """
+                using System;
+                using System.Collections;
+                using System.Collections.Generic;
+                using System.Linq;
+
+                namespace Outer
+                {
+                    public struct ImmutableArray<T> : IEnumerable<T>
+                    {
+                        public IEnumerator<T> GetEnumerator()
+                        {
+                            throw new NotImplementedException();
+                        }
+
+                        IEnumerator IEnumerable.GetEnumerator()
+                        {
+                            throw new NotImplementedException();
+                        }
+                    }
+
+                    public static class ReadOnlyArrayExtensions
+                    {
+                        public static ImmutableArray<TResult> Select<T, TResult>(this ImmutableArray<T> array, Func<T, TResult> selector)
+                        {
+                            throw new NotImplementedException();
+                        }
+                    }
+
+                    namespace Inner
+                    {
+                        class Program
+                        {
+                            static void Main(string[] args)
+                            {
+                                args.Select($$
+                            }
+                        }
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/834609")]
         public async Task LambdaWithAutomaticBraceCompletion()
         {
-            var markup = @"using System;
-using System;
- 
-public class Class
-{
-    public void Goo()
-    {
-        EventHandler h = (s$$)
-    }
-}";
+            var markup = """
+                using System;
+                using System;
+
+                public class Class
+                {
+                    public void Goo()
+                    {
+                        EventHandler h = (s$$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112")]
         public async Task ThisConstructorInitializer()
         {
-            var markup = @"using System;
-class X 
-{ 
-    X(Func<X> x) : this($$) { } 
-}";
+            var markup = """
+                using System;
+                class X 
+                { 
+                    X(Func<X> x) : this($$) { } 
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112")]
         public async Task BaseConstructorInitializer()
         {
-            var markup = @"using System;
-class B
-{
-    public B(Func<B> x) {}
-}
+            var markup = """
+                using System;
+                class B
+                {
+                    public B(Func<B> x) {}
+                }
 
-class D : B 
-{ 
-    D() : base($$) { } 
-}";
+                class D : B 
+                { 
+                    D() : base($$) { } 
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/887842")]
         public async Task PreprocessorExpression()
         {
-            var markup = @"class C
-{
-#if $$
-}";
+            var markup = """
+                class C
+                {
+                #if $$
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/967254")]
         public async Task ImplicitArrayInitializerAfterNew()
         {
-            var markup = @"using System;
+            var markup = """
+                using System;
 
-class a
-{
-    void goo()
-    {
-        int[] a = new $$;
-    }
-}";
+                class a
+                {
+                    void goo()
+                    {
+                        int[] a = new $$;
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
@@ -730,95 +806,102 @@ public async Task PartialInterfaceName()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/12818")]
         public async Task UnwrapParamsArray()
         {
-            var markup = @"
-using System;
-class C {
-    C(params Action<int>[] a) {
-        new C($$
-    }
-}";
+            var markup = """
+                using System;
+                class C {
+                    C(params Action<int>[] a) {
+                        new C($$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/12818")]
         public async Task DoNotUnwrapRegularArray()
         {
-            var markup = @"
-using System;
-class C {
-    C(Action<int>[] a) {
-        new C($$
-    }
-}";
+            var markup = """
+                using System;
+                class C {
+                    C(Action<int>[] a) {
+                        new C($$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/47662")]
         public async Task LambdaExpressionInImplicitObjectCreation()
         {
-            var markup = @"
-using System;
-class C {
-    C(Action<int> a) {
-        C c = new($$
-    }
-}";
+            var markup = """
+                using System;
+                class C {
+                    C(Action<int> a) {
+                        C c = new($$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15443")]
         public async Task NotBuilderWhenDelegateInferredRightOfDotInInvocation()
         {
-            var markup = @"
-class C {
-	Action a = Task.$$
-}";
+            var markup = """
+                class C {
+                	Action a = Task.$$
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/15443")]
         public async Task NotBuilderInTypeArgument()
         {
-            var markup = @"
-namespace ConsoleApplication1
-{
-    class Program
-    {
-        class N { }
-        static void Main(string[] args)
-        {
-            Program.N n = Load<Program.$$
-        }
+            var markup = """
+                namespace ConsoleApplication1
+                {
+                    class Program
+                    {
+                        class N { }
+                        static void Main(string[] args)
+                        {
+                            Program.N n = Load<Program.$$
+                        }
 
-        static T Load<T>() => default(T);
-    }
-}";
+                        static T Load<T>() => default(T);
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/16176")]
         public async Task NotBuilderForLambdaAfterNew()
         {
-            var markup = @"
-class C {
-	Action a = new $$
-}";
+            var markup = """
+                class C {
+                	Action a = new $$
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20937")]
         public async Task AsyncLambda()
         {
-            var markup = @"
-using System;
-using System.Threading.Tasks;
-class Program
-{
-    public void B(Func<int, int, Task<int>> f) { }
+            var markup = """
+                using System;
+                using System.Threading.Tasks;
+                class Program
+                {
+                    public void B(Func<int, int, Task<int>> f) { }
 
-    void A()
-    {
-        B(async($$";
+                    void A()
+                    {
+                        B(async($$
+                """;
 
             await VerifyBuilderAsync(markup);
         }
@@ -826,16 +909,17 @@ void A()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20937")]
         public async Task AsyncLambdaAfterComma()
         {
-            var markup = @"
-using System;
-using System.Threading.Tasks;
-class Program
-{
-    public void B(Func<int, int, Task<int>> f) { }
+            var markup = """
+                using System;
+                using System.Threading.Tasks;
+                class Program
+                {
+                    public void B(Func<int, int, Task<int>> f) { }
 
-    void A()
-    {
-        B(async(p1, $$";
+                    void A()
+                    {
+                        B(async(p1, $$
+                """;
 
             await VerifyBuilderAsync(markup);
         }
@@ -843,468 +927,482 @@ void A()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithExtensionAndInstanceMethod1()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, Action<int> action)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, Action<int> action)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar(a$$
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar(a$$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithExtensionAndInstanceMethod2()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, Action<int> action)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, Action<int> action)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar(a$$)
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar(a$$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithExtensionAndInstanceMethod3()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, Action<int> action)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, Action<int> action)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar(($$
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar(($$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithExtensionAndInstanceMethod4()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, Action<int> action)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, Action<int> action)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar(($$)
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar(($$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithExtensionAndInstanceMethod5()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, Action<int> action)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, Action<int> action)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar(($$))
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar(($$))
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithExtensionAndInstanceMethod6()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, Action<int> action)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, Action<int> action)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar((a, $$
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar((a, $$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithExtensionAndInstanceMethod7()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, Action<int> action)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, Action<int> action)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar(async (a$$
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar(async (a$$
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28586")]
         public async Task WithNonDelegateExtensionAndInstanceMethod1()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-public sealed class Goo
-{
-    public void Bar()
-    {
-    }
-}
+                public sealed class Goo
+                {
+                    public void Bar()
+                    {
+                    }
+                }
 
-public static class GooExtensions
-{
-    public static void Bar(this Goo goo, int val)
-    {
-    }
-}
+                public static class GooExtensions
+                {
+                    public static void Bar(this Goo goo, int val)
+                    {
+                    }
+                }
 
-public static class Repro
-{
-    public static void ReproMethod(Goo goo)
-    {
-        goo.Bar(a$$
-    }
-}
-";
+                public static class Repro
+                {
+                    public static void ReproMethod(Goo goo)
+                    {
+                        goo.Bar(a$$
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInDeclarationPattern()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is int o$$)
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is int o$$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInDeclarationPattern2()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is System.Collections.Generic.List<int> an$$)
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is System.Collections.Generic.List<int> an$$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInRecursivePattern()
         {
-            var markup = @"
-class C
-{
-    int P { get; }
+            var markup = """
+                class C
+                {
+                    int P { get; }
 
-    void M(C test)
-    {
-        if (test is { P: 1 } o$$)
-    }
-}";
+                    void M(C test)
+                    {
+                        if (test is { P: 1 } o$$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInPropertyPattern()
         {
-            var markup = @"
-class C
-{
-    int P { get; }
+            var markup = """
+                class C
+                {
+                    int P { get; }
 
-    void M(C test)
-    {
-        if (test is { P: int o$$ })
-    }
-}";
+                    void M(C test)
+                    {
+                        if (test is { P: int o$$ })
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInAndPattern()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is 1 and int a$$)
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is 1 and int a$$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInAndOrPattern()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is (int or 1) and int a$$)
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is (int or 1) and int a$$)
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInSwitchStatement()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        switch (e)
-        {
-            case int o$$
-        }
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        switch (e)
+                        {
+                            case int o$$
+                        }
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestInSwitchExpression()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        var result = e switch
-        {
-            int o$$
-        }
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        var result = e switch
+                        {
+                            int o$$
+                        }
+                    }
+                }
+                """;
             await VerifyBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestMissingInNotPattern_Declaration()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is not int o$$)
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is not int o$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestMissingInNotPattern_Declaration2()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is not (1 and int o$$))
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is not (1 and int o$$))
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestMissingInNotPattern_Recursive()
         {
-            var markup = @"
-class C
-{
-    int P { get; }
+            var markup = """
+                class C
+                {
+                    int P { get; }
 
-    void M(C test)
-    {
-        if (test is not { P: 1 } o$$)
-    }
-}";
+                    void M(C test)
+                    {
+                        if (test is not { P: 1 } o$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestMissingInOrPattern()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is 1 or int o$$)
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is 1 or int o$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestMissingInAndOrPattern()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        var e = new object();
-        if (e is 1 or int and int o$$)
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        var e = new object();
+                        if (e is 1 or int and int o$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/42368")]
         public async Task TestMissingInRecursiveOrPattern()
         {
-            var markup = @"
-class C
-{
-    int P { get; }
+            var markup = """
+                class C
+                {
+                    int P { get; }
 
-    void M(C test)
-    {
-        if (test is null or { P: 1 } o$$)
-    }
-}";
+                    void M(C test)
+                    {
+                        if (test is null or { P: 1 } o$$)
+                    }
+                }
+                """;
             await VerifyNotBuilderAsync(markup);
         }
 
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SymbolCompletionProviderTests_NoInteractive.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SymbolCompletionProviderTests_NoInteractive.cs
index a9f9e60e19873..cde5ede628968 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SymbolCompletionProviderTests_NoInteractive.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/SymbolCompletionProviderTests_NoInteractive.cs
@@ -73,8 +73,10 @@ public async Task GlobalStatement1()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44423")]
         public async Task GlobalStatement2()
         {
-            await VerifyItemExistsAsync(@"using System;
-Console.$$", @"Beep");
+            await VerifyItemExistsAsync("""
+                using System;
+                Console.$$
+                """, @"Beep");
         }
 
         [Fact]
@@ -84,70 +86,84 @@ public async Task InvalidLocation3()
         [Fact]
         public async Task InvalidLocation4()
         {
-            await VerifyItemIsAbsentAsync(@"class C {
-#if false 
-System.Console.$$
-#endif", @"Beep");
+            await VerifyItemIsAbsentAsync("""
+                class C {
+                #if false 
+                System.Console.$$
+                #endif
+                """, @"Beep");
         }
 
         [Fact]
         public async Task InvalidLocation5()
         {
-            await VerifyItemIsAbsentAsync(@"class C {
-#if true 
-System.Console.$$
-#endif", @"Beep");
+            await VerifyItemIsAbsentAsync("""
+                class C {
+                #if true 
+                System.Console.$$
+                #endif
+                """, @"Beep");
         }
 
         [Fact]
         public async Task InvalidLocation6()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
+            await VerifyItemIsAbsentAsync("""
+                using System;
 
-class C {
-// Console.$$", @"Beep");
+                class C {
+                // Console.$$
+                """, @"Beep");
         }
 
         [Fact]
         public async Task InvalidLocation7()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
+            await VerifyItemIsAbsentAsync("""
+                using System;
 
-class C {
-/*  Console.$$   */", @"Beep");
+                class C {
+                /*  Console.$$   */
+                """, @"Beep");
         }
 
         [Fact]
         public async Task InvalidLocation8()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
+            await VerifyItemIsAbsentAsync("""
+                using System;
 
-class C {
-/// Console.$$", @"Beep");
+                class C {
+                /// Console.$$
+                """, @"Beep");
         }
 
         [Fact]
         public async Task InvalidLocation9()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
-
-class C {
-    void Method()
-    {
-        /// Console.$$
-    }
-}", @"Beep");
+            await VerifyItemIsAbsentAsync("""
+                using System;
+
+                class C {
+                    void Method()
+                    {
+                        /// Console.$$
+                    }
+                }
+                """, @"Beep");
         }
 
         [Fact]
         public async Task InvalidLocation10()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
-
-class C {
-    void Method()
-    {
-        /**  Console.$$   */", @"Beep");
+            await VerifyItemIsAbsentAsync("""
+                using System;
+
+                class C {
+                    void Method()
+                    {
+                        /**  Console.$$   */
+                """, @"Beep");
         }
 
         [Fact]
@@ -161,8 +177,10 @@ public async Task InvalidLocation12()
         [Fact]
         public async Task InvalidLocation13()
         {
-            var content = @"[Console.$$]
-class CL {}";
+            var content = """
+                [Console.$$]
+                class CL {}
+                """;
 
             await VerifyItemIsAbsentAsync(AddUsingDirectives("using System;", content), @"Beep");
         }
@@ -174,10 +192,12 @@ public async Task InvalidLocation14()
         [Fact]
         public async Task InvalidLocation15()
         {
-            var content = @"class CL {
-    [Console.$$]
-    void Method() {}
-}";
+            var content = """
+                class CL {
+                    [Console.$$]
+                    void Method() {}
+                }
+                """;
             await VerifyItemIsAbsentAsync(AddUsingDirectives("using System;", content), @"Beep");
         }
 
@@ -188,52 +208,60 @@ public async Task InvalidLocation16()
         [Fact]
         public async Task InvalidLocation17()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
-
-class Program {
-    static void Main(string[] args)
-    {
-        string a = ""a$$
-    }
-}", @"Main");
+            await VerifyItemIsAbsentAsync("""
+                using System;
+
+                class Program {
+                    static void Main(string[] args)
+                    {
+                        string a = "a$$
+                    }
+                }
+                """, @"Main");
         }
 
         [Fact]
         public async Task InvalidLocation18()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
-
-class Program {
-    static void Main(string[] args)
-    {
-        #region
-        #endregion // a$$
-    }
-}", @"Main");
+            await VerifyItemIsAbsentAsync("""
+                using System;
+
+                class Program {
+                    static void Main(string[] args)
+                    {
+                        #region
+                        #endregion // a$$
+                    }
+                }
+                """, @"Main");
         }
 
         [Fact]
         public async Task InvalidLocation19()
         {
-            await VerifyItemIsAbsentAsync(@"using System;
-
-class Program {
-    static void Main(string[] args)
-    {
-        //s$$
-    }
-}", @"SByte");
+            await VerifyItemIsAbsentAsync("""
+                using System;
+
+                class Program {
+                    static void Main(string[] args)
+                    {
+                        //s$$
+                    }
+                }
+                """, @"SByte");
         }
 
         [Fact]
         public async Task InsideMethodBody()
         {
-            await VerifyItemExistsAsync(@"using System;
-
-class C {
-    void Method()
-    {
-        Console.$$", @"Beep");
+            await VerifyItemExistsAsync("""
+                using System;
+
+                class C {
+                    void Method()
+                    {
+                        Console.$$
+                """, @"Beep");
         }
 
         [Fact]
@@ -243,62 +271,72 @@ public async Task UsingDirectiveGlobal()
         [Fact]
         public async Task InsideAccessor()
         {
-            await VerifyItemExistsAsync(@"using System;
-
-class C {
-    string Property
-    {
-        get 
-        {
-            Console.$$", @"Beep");
+            await VerifyItemExistsAsync("""
+                using System;
+
+                class C {
+                    string Property
+                    {
+                        get 
+                        {
+                            Console.$$
+                """, @"Beep");
         }
 
         [Fact]
         public async Task FieldInitializer()
         {
-            await VerifyItemExistsAsync(@"using System;
+            await VerifyItemExistsAsync("""
+                using System;
 
-class C {
-    int i = Console.$$", @"Beep");
+                class C {
+                    int i = Console.$$
+                """, @"Beep");
         }
 
         [Fact]
         public async Task FieldInitializer2()
         {
-            await VerifyItemExistsAsync(@"
-class C {
-    object i = $$", @"System");
+            await VerifyItemExistsAsync("""
+                class C {
+                    object i = $$
+                """, @"System");
         }
 
         [Fact]
         public async Task ImportedProperty()
         {
-            await VerifyItemExistsAsync(@"using System.Collections.Generic;
-
-class C {
-    void Method()
-    {
-       new List<string>().$$", @"Capacity");
+            await VerifyItemExistsAsync("""
+                using System.Collections.Generic;
+
+                class C {
+                    void Method()
+                    {
+                       new List<string>().$$
+                """, @"Capacity");
         }
 
         [Fact]
         public async Task FieldInitializerWithProperty()
         {
-            await VerifyItemExistsAsync(@"using System.Collections.Generic;
-class C {
-    int i =  new List<string>().$$", @"Count");
+            await VerifyItemExistsAsync("""
+                using System.Collections.Generic;
+                class C {
+                    int i =  new List<string>().$$
+                """, @"Count");
         }
 
         [Fact]
         public async Task StaticMethods()
         {
-            await VerifyItemExistsAsync(@"using System;
+            await VerifyItemExistsAsync("""
+                using System;
 
-class C {
-    private static int Method() {}
+                class C {
+                    private static int Method() {}
 
-    int i = $$
-", @"Method");
+                    int i = $$
+                """, @"Method");
         }
 
         [Fact]
@@ -308,10 +346,11 @@ public async Task EndOfFile()
         [Fact]
         public async Task InheritedStaticFields()
         {
-            var code = @"class A { public static int X; }
-class B : A { public static int Y; }
-class C { void M() { B.$$ } }
-";
+            var code = """
+                class A { public static int X; }
+                class B : A { public static int Y; }
+                class C { void M() { B.$$ } }
+                """;
             await VerifyItemExistsAsync(code, "X");
             await VerifyItemExistsAsync(code, "Y");
         }
@@ -319,15 +358,17 @@ class C { void M() { B.$$ } }
         [Fact, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems?id=209299")]
         public async Task TestDescriptionWhenDocumentLengthChanges()
         {
-            var code = @"using System;
-
-class C 
-{
-    string Property
-    {
-        get 
-        {
-            Console.$$";//, @"Beep"
+            var code = """
+                using System;
+
+                class C 
+                {
+                    string Property
+                    {
+                        get 
+                        {
+                            Console.$$
+                """;//, @"Beep"
 
             using var workspace = TestWorkspace.CreateCSharp(code);
             var testDocument = workspace.Documents.Single();
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/TupleNameCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/TupleNameCompletionProviderTests.cs
index d371bc22c44cf..0489892b38994 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/TupleNameCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/TupleNameCompletionProviderTests.cs
@@ -21,105 +21,113 @@ public class TupleNameCompletionProviderTests : AbstractCSharpCompletionProvider
         [Fact]
         public async Task AfterOpenParen()
         {
-            await VerifyItemExistsAsync(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        (int word, int zword) t = ($$
-    }
-}", "word", displayTextSuffix: ":");
+            await VerifyItemExistsAsync("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        (int word, int zword) t = ($$
+                    }
+                }
+                """, "word", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task AfterOpenParenWithBraceCompletion()
         {
-            await VerifyItemExistsAsync(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        (int word, int zword) t = ($$)
-    }
-}", "word", displayTextSuffix: ":");
+            await VerifyItemExistsAsync("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        (int word, int zword) t = ($$)
+                    }
+                }
+                """, "word", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task AfterOpenParenInTupleExpression()
         {
-            await VerifyItemExistsAsync(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        (int word, int zword) t = ($$, zword: 2
-    }
-}", "word", displayTextSuffix: ":");
+            await VerifyItemExistsAsync("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        (int word, int zword) t = ($$, zword: 2
+                    }
+                }
+                """, "word", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task AfterOpenParenInTupleExpressionWithBraceCompletion()
         {
-            await VerifyItemExistsAsync(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        (int word, int zword) t = ($$, zword: 2
-    }
-}", "word", displayTextSuffix: ":");
+            await VerifyItemExistsAsync("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        (int word, int zword) t = ($$, zword: 2
+                    }
+                }
+                """, "word", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task AfterComma()
         {
-            await VerifyItemExistsAsync(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        (int word, int zword) t = (1, $$
-    }
-}", "zword", displayTextSuffix: ":");
+            await VerifyItemExistsAsync("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        (int word, int zword) t = (1, $$
+                    }
+                }
+                """, "zword", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task AfterCommaWithBraceCompletion()
         {
-            await VerifyItemExistsAsync(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        (int word, int zword) t = (1, $$)
-    }
-}", "zword", displayTextSuffix: ":");
+            await VerifyItemExistsAsync("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        (int word, int zword) t = (1, $$)
+                    }
+                }
+                """, "zword", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task InTupleAsArgument()
         {
-            await VerifyItemExistsAsync(@"
-class Program
-{
-    static void Main((int word, int zword) args)
-    {
-         Main(($$))
-    }
-}", "word", displayTextSuffix: ":");
+            await VerifyItemExistsAsync("""
+                class Program
+                {
+                    static void Main((int word, int zword) args)
+                    {
+                         Main(($$))
+                    }
+                }
+                """, "word", displayTextSuffix: ":");
         }
 
         [Fact]
         public async Task MultiplePossibleTuples()
         {
-            var markup = @"
-class Program
-{
-    static void Main((int number, int znumber) args) { }
-    static void Main((string word, int zword) args) {
-        Main(($$
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    static void Main((int number, int znumber) args) { }
+                    static void Main((string word, int zword) args) {
+                        Main(($$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "word", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "number", displayTextSuffix: ":");
         }
@@ -127,14 +135,15 @@ static void Main((string word, int zword) args) {
         [Fact]
         public async Task MultiplePossibleTuplesAfterComma()
         {
-            var markup = @"
-class Program
-{
-    static void Main((int number, int znumber) args) { }
-    static void Main((string word, int zword) args) {
-        Main((1, $$
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    static void Main((int number, int znumber) args) { }
+                    static void Main((string word, int zword) args) {
+                        Main((1, $$
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "zword", displayTextSuffix: ":");
             await VerifyItemExistsAsync(markup, "znumber", displayTextSuffix: ":");
         }
@@ -142,28 +151,30 @@ static void Main((string word, int zword) args) {
         [Fact]
         public async Task AtIndexGreaterThanNumberOfTupleElements()
         {
-            var markup = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        (int word, int zword) t = (1, 2, 3, 4, $$ 
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        (int word, int zword) t = (1, 2, 3, 4, $$ 
+                    }
+                }
+                """;
             await VerifyNoItemsExistAsync(markup);
         }
 
         [Fact]
         public async Task ConvertCastToTupleExpression()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        (int goat, int moat) x = (g$$)1;
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        (int goat, int moat) x = (g$$)1;
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(markup, "goat", displayTextSuffix: ":");
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/XmlDocumentationCommentCompletionProviderTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/XmlDocumentationCommentCompletionProviderTests.cs
index ff26c013cd7ae..ab5c51ac79204 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/XmlDocumentationCommentCompletionProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionProviders/XmlDocumentationCommentCompletionProviderTests.cs
@@ -76,348 +76,396 @@ await VerifyAtEndOfFile_ItemPartiallyWrittenAsync(
         [Fact]
         public async Task AlwaysVisibleAtAnyLevelItems1()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    /// $$
-    public void bar() { }
-}", "inheritdoc", "see", "seealso", "![CDATA[", "!--");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    /// $$
+                    public void bar() { }
+                }
+                """, "inheritdoc", "see", "seealso", "![CDATA[", "!--");
         }
 
         [Fact]
         public async Task AlwaysVisibleAtAnyLevelItems2()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    /// <summary> $$ </summary>
-    public void bar() { }
-}", "inheritdoc", "see", "seealso", "![CDATA[", "!--");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    /// <summary> $$ </summary>
+                    public void bar() { }
+                }
+                """, "inheritdoc", "see", "seealso", "![CDATA[", "!--");
         }
 
         [Fact]
         public async Task AlwaysVisibleNotTopLevelItems1()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    /// <summary> $$ </summary>
-    public void bar() { }
-}", "c", "code", "list", "para");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    /// <summary> $$ </summary>
+                    public void bar() { }
+                }
+                """, "c", "code", "list", "para");
         }
 
         [Fact]
         public async Task AlwaysVisibleNotTopLevelItems2()
         {
-            await VerifyItemsAbsentAsync(@"
-public class goo
-{
-    /// $$ 
-    public void bar() { }
-}", "c", "code", "list", "para", "paramref", "typeparamref");
+            await VerifyItemsAbsentAsync("""
+                public class goo
+                {
+                    /// $$ 
+                    public void bar() { }
+                }
+                """, "c", "code", "list", "para", "paramref", "typeparamref");
         }
 
         [Fact]
         public async Task AlwaysVisibleTopLevelOnlyItems1()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    /// $$ 
-    public void bar() { }
-}", "exception", "include", "permission");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    /// $$ 
+                    public void bar() { }
+                }
+                """, "exception", "include", "permission");
         }
 
         [Fact]
         public async Task AlwaysVisibleTopLevelOnlyItems2()
         {
-            await VerifyItemsAbsentAsync(@"
-public class goo
-{
-    /// <summary> $$ </summary>
-    public void bar() { }
-}", "exception", "include", "permission");
+            await VerifyItemsAbsentAsync("""
+                public class goo
+                {
+                    /// <summary> $$ </summary>
+                    public void bar() { }
+                }
+                """, "exception", "include", "permission");
         }
 
         [Fact]
         public async Task TopLevelSingleUseItems1()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    ///  $$
-    public void bar() { }
-}", "example", "remarks", "summary");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    ///  $$
+                    public void bar() { }
+                }
+                """, "example", "remarks", "summary");
         }
 
         [Fact]
         public async Task TopLevelSingleUseItems2()
         {
-            await VerifyItemsAbsentAsync(@"
-public class goo
-{
-    ///  <summary> $$ </summary>
-    public void bar() { }
-}", "example", "remarks", "summary");
+            await VerifyItemsAbsentAsync("""
+                public class goo
+                {
+                    ///  <summary> $$ </summary>
+                    public void bar() { }
+                }
+                """, "example", "remarks", "summary");
         }
 
         [Fact]
         public async Task TopLevelSingleUseItems3()
         {
-            await VerifyItemsAbsentAsync(@"
-public class goo
-{
-    ///  <summary> $$ </summary>
-    /// <example></example>
-    /// <remarks></remarks>
-    
-    public void bar() { }
-}", "example", "remarks", "summary");
+            await VerifyItemsAbsentAsync("""
+                public class goo
+                {
+                    ///  <summary> $$ </summary>
+                    /// <example></example>
+                    /// <remarks></remarks>
+
+                    public void bar() { }
+                }
+                """, "example", "remarks", "summary");
         }
 
         [Fact]
         public async Task OnlyInListItems()
         {
-            await VerifyItemsAbsentAsync(@"
-public class goo
-{
-    ///  <summary> $$ </summary>
-    /// <example></example>
-    /// <remarks></remarks>
-    
-    public void bar() { }
-}", "listheader", "item", "term", "description");
+            await VerifyItemsAbsentAsync("""
+                public class goo
+                {
+                    ///  <summary> $$ </summary>
+                    /// <example></example>
+                    /// <remarks></remarks>
+
+                    public void bar() { }
+                }
+                """, "listheader", "item", "term", "description");
         }
 
         [Fact]
         public async Task OnlyInListItems2()
         {
-            await VerifyItemsAbsentAsync(@"
-public class goo
-{
-    ///   $$ 
-    
-    public void bar() { }
-}", "listheader", "item", "term", "description");
+            await VerifyItemsAbsentAsync("""
+                public class goo
+                {
+                    ///   $$ 
+
+                    public void bar() { }
+                }
+                """, "listheader", "item", "term", "description");
         }
 
         [Fact]
         public async Task OnlyInListItems3()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    ///   <list>$$</list>
-    
-    public void bar() { }
-}", "listheader", "item", "term", "description");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    ///   <list>$$</list>
+
+                    public void bar() { }
+                }
+                """, "listheader", "item", "term", "description");
         }
 
         [Fact]
         public async Task OnlyInListItems4()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    ///   <list><$$</list>
-    
-    public void bar() { }
-}", "listheader", "item", "term", "description");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    ///   <list><$$</list>
+
+                    public void bar() { }
+                }
+                """, "listheader", "item", "term", "description");
         }
 
         [Fact]
         public async Task ListHeaderItems()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    ///  <summary>
-    ///  <list><listheader> $$ </listheader></list>
-    ///  </summary>
-    /// <example></example>
-    /// <remarks></remarks>
-    
-    public void bar() { }
-}", "term", "description");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    ///  <summary>
+                    ///  <list><listheader> $$ </listheader></list>
+                    ///  </summary>
+                    /// <example></example>
+                    /// <remarks></remarks>
+
+                    public void bar() { }
+                }
+                """, "term", "description");
         }
 
         [Fact]
         public async Task VoidMethodDeclarationItems()
         {
-            await VerifyItemIsAbsentAsync(@"
-public class goo
-{
-    
-    /// $$
-    public void bar() { }
-}", "returns");
+            await VerifyItemIsAbsentAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public void bar() { }
+                }
+                """, "returns");
         }
 
         [Fact]
         public async Task MethodReturns()
         {
-            await VerifyItemExistsAsync(@"
-public class goo
-{
-    
-    /// $$
-    public int bar() { }
-}", "returns");
+            await VerifyItemExistsAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public int bar() { }
+                }
+                """, "returns");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8627")]
         public async Task ReadWritePropertyNoReturns()
         {
-            await VerifyItemIsAbsentAsync(@"
-public class goo
-{
-    
-    /// $$
-    public int bar { get; set; }
-}", "returns");
+            await VerifyItemIsAbsentAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public int bar { get; set; }
+                }
+                """, "returns");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8627")]
         public async Task ReadWritePropertyValue()
         {
-            await VerifyItemExistsAsync(@"
-public class goo
-{
-    
-    /// $$
-    public int bar { get; set; }
-}", "value");
+            await VerifyItemExistsAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public int bar { get; set; }
+                }
+                """, "value");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8627")]
         public async Task ReadOnlyPropertyNoReturns()
         {
-            await VerifyItemIsAbsentAsync(@"
-public class goo
-{
-    
-    /// $$
-    public int bar { get; }
-}", "returns");
+            await VerifyItemIsAbsentAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public int bar { get; }
+                }
+                """, "returns");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8627")]
         public async Task ReadOnlyPropertyValue()
         {
-            await VerifyItemExistsAsync(@"
-public class goo
-{
-    
-    /// $$
-    public int bar { get; }
-}", "value");
+            await VerifyItemExistsAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public int bar { get; }
+                }
+                """, "value");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8627")]
         public async Task WriteOnlyPropertyNoReturns()
         {
-            await VerifyItemIsAbsentAsync(@"
-public class goo
-{
-    
-    /// $$
-    public int bar { set; }
-}", "returns");
+            await VerifyItemIsAbsentAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public int bar { set; }
+                }
+                """, "returns");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8627")]
         public async Task WriteOnlyPropertyValue()
         {
-            await VerifyItemExistsAsync(@"
-public class goo
-{
-    
-    /// $$
-    public int bar { set; }
-}", "value");
+            await VerifyItemExistsAsync("""
+                public class goo
+                {
+
+                    /// $$
+                    public int bar { set; }
+                }
+                """, "value");
         }
 
         [Fact]
         public async Task MethodParamTypeParam()
         {
-            var text = @"
-public class goo<TGoo>
-{
-    
-    /// $$
-    public int bar<TBar>(TBar green) { }
-}";
+            var text = """
+                public class goo<TGoo>
+                {
+
+                    /// $$
+                    public int bar<TBar>(TBar green) { }
+                }
+                """;
 
-            await VerifyItemsExistAsync(text, "typeparam name=\"TBar\"", "param name=\"green\"");
-            await VerifyItemsAbsentAsync(text, "typeparam name=\"TGoo\"");
+            await VerifyItemsExistAsync(text, """
+                typeparam name="TBar"
+                """, """
+                param name="green"
+                """);
+            await VerifyItemsAbsentAsync(text, """
+                typeparam name="TGoo"
+                """);
         }
 
         [Fact]
         public async Task IndexerParamTypeParam()
         {
-            await VerifyItemsExistAsync(@"
-public class goo<T>
-{
+            await VerifyItemsExistAsync("""
+                public class goo<T>
+                {
 
-    /// $$
-    public int this[T green] { get { } set { } }
-}", "param name=\"green\"");
+                    /// $$
+                    public int this[T green] { get { } set { } }
+                }
+                """, """
+                param name="green"
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17872")]
         public async Task MethodParamRefName()
         {
-            var text = @"
-public class Outer<TOuter>
-{
-    public class Inner<TInner>
-    {
-        /// <summary>
-        /// $$
-        /// </summary>
-        public int Method<TMethod>(T green) { }
-    }
-}";
+            var text = """
+                public class Outer<TOuter>
+                {
+                    public class Inner<TInner>
+                    {
+                        /// <summary>
+                        /// $$
+                        /// </summary>
+                        public int Method<TMethod>(T green) { }
+                    }
+                }
+                """;
             await VerifyItemsExistAsync(
                 text,
-                "typeparamref name=\"TOuter\"",
-                "typeparamref name=\"TInner\"",
-                "typeparamref name=\"TMethod\"",
-                "paramref name=\"green\"");
+                """
+                typeparamref name="TOuter"
+                """,
+                """
+                typeparamref name="TInner"
+                """,
+                """
+                typeparamref name="TMethod"
+                """,
+                """
+                paramref name="green"
+                """);
         }
 
         [Fact]
         public async Task ClassTypeParamRefName()
         {
-            await VerifyItemsExistAsync(@"
-/// <summary>
-/// $$
-/// </summary>
-public class goo<T>
-{
-    public int bar<T>(T green) { }
-}", "typeparamref name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// <summary>
+                /// $$
+                /// </summary>
+                public class goo<T>
+                {
+                    public int bar<T>(T green) { }
+                }
+                """, """
+                typeparamref name="T"
+                """);
         }
 
         [Fact]
         public async Task ClassTypeParam()
         {
-            await VerifyItemsExistAsync(@"
-/// $$
-public class goo<T>
-{
-    public int bar<T>(T green) { }
-}", "typeparam name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// $$
+                public class goo<T>
+                {
+                    public int bar<T>(T green) { }
+                }
+                """, """
+                typeparam name="T"
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/638802")]
         public async Task TagsAfterSameLineClosedTag()
         {
-            var text = @"/// <summary>
-/// <goo></goo>$$
-/// 
-/// </summary>
-";
+            var text = """
+                /// <summary>
+                /// <goo></goo>$$
+                /// 
+                /// </summary>
+                """;
 
             await VerifyItemsExistAsync(text, "!--", "![CDATA[", "c", "code", "inheritdoc", "list", "para", "seealso", "see");
         }
@@ -425,15 +473,16 @@ public async Task TagsAfterSameLineClosedTag()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/734825")]
         public async Task EnumMember()
         {
-            var text = @"public enum z
-{
-    /// <summary>
-    /// 
-    /// </summary>
-    /// <$$
-    a
-}
-";
+            var text = """
+                public enum z
+                {
+                    /// <summary>
+                    /// 
+                    /// </summary>
+                    /// <$$
+                    a
+                }
+                """;
 
             await VerifyItemsExistAsync(text);
         }
@@ -441,11 +490,12 @@ public async Task EnumMember()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/954679")]
         public async Task CompletionList()
         {
-            await VerifyItemExistsAsync(@"
-/// $$
-public class goo
-{
-}", "completionlist");
+            await VerifyItemExistsAsync("""
+                /// $$
+                public class goo
+                {
+                }
+                """, "completionlist");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44423")]
@@ -453,76 +503,79 @@ public class goo
         public async Task ParamRefNames()
         {
             // Local functions do not support documentation comments
-            await VerifyItemIsAbsentAsync(@"
-/// <summary>
-/// <paramref name=""$$""/>
-/// </summary>
-static void Main(string[] args)
-{
-}
-", "args", sourceCodeKind: SourceCodeKind.Regular);
+            await VerifyItemIsAbsentAsync("""
+                /// <summary>
+                /// <paramref name="$$"/>
+                /// </summary>
+                static void Main(string[] args)
+                {
+                }
+                """, "args", sourceCodeKind: SourceCodeKind.Regular);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44423")]
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/775091")]
         public async Task ParamRefNames_Interactive()
         {
-            await VerifyItemExistsAsync(@"
-/// <summary>
-/// <paramref name=""$$""/>
-/// </summary>
-static void Main(string[] args)
-{
-}
-", "args", sourceCodeKind: SourceCodeKind.Script);
+            await VerifyItemExistsAsync("""
+                /// <summary>
+                /// <paramref name="$$"/>
+                /// </summary>
+                static void Main(string[] args)
+                {
+                }
+                """, "args", sourceCodeKind: SourceCodeKind.Script);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44423")]
         public async Task ParamNamesInEmptyAttribute()
         {
             // Local functions do not support documentation comments
-            await VerifyItemIsAbsentAsync(@"
-/// <param name=""$$""/>
-static void Goo(string str)
-{
-}
-", "str", sourceCodeKind: SourceCodeKind.Regular);
+            await VerifyItemIsAbsentAsync("""
+                /// <param name="$$"/>
+                static void Goo(string str)
+                {
+                }
+                """, "str", sourceCodeKind: SourceCodeKind.Regular);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/44423")]
         public async Task ParamNamesInEmptyAttribute_Interactive()
         {
-            await VerifyItemExistsAsync(@"
-/// <param name=""$$""/>
-static void Goo(string str)
-{
-}
-", "str", sourceCodeKind: SourceCodeKind.Script);
+            await VerifyItemExistsAsync("""
+                /// <param name="$$"/>
+                static void Goo(string str)
+                {
+                }
+                """, "str", sourceCodeKind: SourceCodeKind.Script);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/26713")]
         public async Task DelegateParams()
         {
-            await VerifyItemExistsAsync(@"
-/// $$
-delegate void D(object o);
-", "param name=\"o\"");
+            await VerifyItemExistsAsync("""
+                /// $$
+                delegate void D(object o);
+                """, """
+                param name="o"
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17872")]
         public async Task TypeParamRefNamesInEmptyAttribute()
         {
-            var text = @"
-public class Outer<TOuter>
-{
-    public class Inner<TInner>
-    {
-        /// <summary>
-        /// <typeparamref name=""$$""/>
-        /// </summary>
-        public int Method<TMethod>(T green) { }
-    }
-}";
+            var text = """
+                public class Outer<TOuter>
+                {
+                    public class Inner<TInner>
+                    {
+                        /// <summary>
+                        /// <typeparamref name="$$"/>
+                        /// </summary>
+                        public int Method<TMethod>(T green) { }
+                    }
+                }
+                """;
 
             await VerifyItemsExistAsync(text, "TOuter", "TInner", "TMethod");
         }
@@ -530,17 +583,18 @@ public int Method<TMethod>(T green) { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/17872")]
         public async Task TypeParamRefNamesPartiallyTyped()
         {
-            var text = @"
-public class Outer<TOuter>
-{
-    public class Inner<TInner>
-    {
-        /// <summary>
-        /// <typeparamref name=""T$$""/>
-        /// </summary>
-        public int Method<TMethod>(T green) { }
-    }
-}";
+            var text = """
+                public class Outer<TOuter>
+                {
+                    public class Inner<TInner>
+                    {
+                        /// <summary>
+                        /// <typeparamref name="T$$"/>
+                        /// </summary>
+                        public int Method<TMethod>(T green) { }
+                    }
+                }
+                """;
 
             await VerifyItemsExistAsync(text, "TOuter", "TInner", "TMethod");
         }
@@ -548,15 +602,16 @@ public int Method<TMethod>(T green) { }
         [Fact]
         public async Task TypeParamNamesInEmptyAttribute()
         {
-            var text = @"
-public class Outer<TOuter>
-{
-    public class Inner<TInner>
-    {
-        /// <typeparam name=""$$""/>
-        public int Method<TMethod>(T green) { }
-    }
-}";
+            var text = """
+                public class Outer<TOuter>
+                {
+                    public class Inner<TInner>
+                    {
+                        /// <typeparam name="$$"/>
+                        public int Method<TMethod>(T green) { }
+                    }
+                }
+                """;
 
             await VerifyItemsExistAsync(text, "TMethod");
             await VerifyItemsAbsentAsync(text, "TOuter", "TInner");
@@ -565,17 +620,18 @@ public int Method<TMethod>(T green) { }
         [Fact]
         public async Task TypeParamNamesInWrongScope()
         {
-            var text = @"
-public class Outer<TOuter>
-{
-    public class Inner<TInner>
-    {
-        /// <summary>
-        /// <typeparam name=""$$""/>
-        /// </summary>
-        public int Method<TMethod>(T green) { }
-    }
-}";
+            var text = """
+                public class Outer<TOuter>
+                {
+                    public class Inner<TInner>
+                    {
+                        /// <summary>
+                        /// <typeparam name="$$"/>
+                        /// </summary>
+                        public int Method<TMethod>(T green) { }
+                    }
+                }
+                """;
 
             await VerifyItemsExistAsync(text, "TMethod");
             await VerifyItemsAbsentAsync(text, "TOuter", "TInner");
@@ -584,15 +640,16 @@ public int Method<TMethod>(T green) { }
         [Fact]
         public async Task TypeParamNamesPartiallyTyped()
         {
-            var text = @"
-public class Outer<TOuter>
-{
-    public class Inner<TInner>
-    {
-        /// <typeparam name=""T$$""/>
-        public int Method<TMethod>(T green) { }
-    }
-}";
+            var text = """
+                public class Outer<TOuter>
+                {
+                    public class Inner<TInner>
+                    {
+                        /// <typeparam name="T$$"/>
+                        public int Method<TMethod>(T green) { }
+                    }
+                }
+                """;
 
             await VerifyItemsExistAsync(text, "TMethod");
             await VerifyItemsAbsentAsync(text, "TOuter", "TInner");
@@ -601,376 +658,398 @@ public int Method<TMethod>(T green) { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8322")]
         public async Task PartialTagCompletion()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    /// <r$$
-    public void bar() { }
-}", "!--", "![CDATA[", "completionlist", "example", "exception", "include", "inheritdoc", "permission", "remarks", "see", "seealso", "summary");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    /// <r$$
+                    public void bar() { }
+                }
+                """, "!--", "![CDATA[", "completionlist", "example", "exception", "include", "inheritdoc", "permission", "remarks", "see", "seealso", "summary");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8322")]
         public async Task PartialTagCompletionNestedTags()
         {
-            await VerifyItemsExistAsync(@"
-public class goo
-{
-    /// <summary>
-    /// <r$$
-    /// </summary>
-    public void bar() { }
-}", "!--", "![CDATA[", "c", "code", "inheritdoc", "list", "para", "see", "seealso");
+            await VerifyItemsExistAsync("""
+                public class goo
+                {
+                    /// <summary>
+                    /// <r$$
+                    /// </summary>
+                    public void bar() { }
+                }
+                """, "!--", "![CDATA[", "c", "code", "inheritdoc", "list", "para", "see", "seealso");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11487")]
         public async Task TypeParamAtTopLevelOnly()
         {
-            await VerifyItemsAbsentAsync(@"
-/// <summary>
-/// $$
-/// </summary>
-public class Goo<T>
-{
-}", "typeparam name=\"T\"");
+            await VerifyItemsAbsentAsync("""
+                /// <summary>
+                /// $$
+                /// </summary>
+                public class Goo<T>
+                {
+                }
+                """, """
+                typeparam name="T"
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11487")]
         public async Task ParamAtTopLevelOnly()
         {
-            await VerifyItemsAbsentAsync(@"
-/// <summary>
-/// $$
-/// </summary>
-static void Goo(string str)
-{
-}", "param name=\"str\"");
+            await VerifyItemsAbsentAsync("""
+                /// <summary>
+                /// $$
+                /// </summary>
+                static void Goo(string str)
+                {
+                }
+                """, """
+                param name="str"
+                """);
         }
 
         [Fact]
         public async Task ListAttributeNames()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// <list $$></list>
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "type");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// <list $$></list>
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "type");
         }
 
         [Fact]
         public async Task ListTypeAttributeValue()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// <list type=""$$""></list>
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "bullet", "number", "table");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// <list type="$$"></list>
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "bullet", "number", "table");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37504")]
         [WorkItem(11489, "https://github.com/dotnet/roslyn/issues/11490")]
         public async Task SeeAttributeNames()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// <see $$/>
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "cref", "langword", "href");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// <see $$/>
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "cref", "langword", "href");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37504")]
         public async Task SeeAlsoAttributeNames()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// <seealso $$/>
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "cref", "href");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// <seealso $$/>
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "cref", "href");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22789")]
         public async Task LangwordCompletionInPlainText()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// Some text $$
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "null", "sealed", "true", "false", "await");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// Some text $$
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "null", "sealed", "true", "false", "await");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22789")]
         public async Task LangwordCompletionAfterAngleBracket1()
         {
-            await VerifyItemsAbsentAsync(@"
-class C
-{
-    /// <summary>
-    /// Some text <$$
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "null", "sealed", "true", "false", "await");
+            await VerifyItemsAbsentAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// Some text <$$
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "null", "sealed", "true", "false", "await");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22789")]
         public async Task LangwordCompletionAfterAngleBracket2()
         {
-            await VerifyItemsAbsentAsync(@"
-class C
-{
-    /// <summary>
-    /// Some text <s$$
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "null", "sealed", "true", "false", "await");
+            await VerifyItemsAbsentAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// Some text <s$$
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "null", "sealed", "true", "false", "await");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/22789")]
         public async Task LangwordCompletionAfterAngleBracket3()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// Some text < $$
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "null", "sealed", "true", "false", "await");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// Some text < $$
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "null", "sealed", "true", "false", "await");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11490")]
         public async Task SeeLangwordAttributeValue()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// <see langword=""$$""/>
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "null", "true", "false", "await");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// <see langword="$$"/>
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "null", "true", "false", "await");
         }
 
         [Fact]
         public async Task InheritdocAttributes1()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <summary>
-    /// <inheritdoc $$/>
-    /// </summary>
-    static void Goo()
-    {
-    }
-}", "cref", "path");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <summary>
+                    /// <inheritdoc $$/>
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "cref", "path");
         }
 
         [Fact]
         public async Task InheritdocAttributes2()
         {
-            await VerifyItemsExistAsync(@"
-class C
-{
-    /// <inheritdoc $$/>
-    static void Goo()
-    {
-    }
-}", "cref", "path");
+            await VerifyItemsExistAsync("""
+                class C
+                {
+                    /// <inheritdoc $$/>
+                    static void Goo()
+                    {
+                    }
+                }
+                """, "cref", "path");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameAfterTagNameInIncompleteTag()
         {
-            var text = @"
-class C
-{
-    /// <exception $$
-    static void Goo()
-    {
-    }
-}";
+            var text = """
+                class C
+                {
+                    /// <exception $$
+                    static void Goo()
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "cref", usePreviousCharAsTrigger: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameAfterTagNameInElementStartTag()
         {
-            var text = @"
-class C
-{
-    /// <exception $$>
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <exception $$>
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "cref");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameAfterTagNameInEmptyElement()
         {
-            var text = @"
-class C
-{
-    /// <see $$/>
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <see $$/>
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "cref");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameAfterTagNamePartiallyTyped()
         {
-            var text = @"
-class C
-{
-    /// <exception c$$
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <exception c$$
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "cref");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameAfterSpecialCrefAttribute()
         {
-            var text = @"
-class C
-{
-    /// <summary>
-    /// <list cref=""String"" $$
-    /// </summary>
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <summary>
+                    /// <list cref="String" $$
+                    /// </summary>
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "type");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameAfterSpecialNameAttribute()
         {
-            var text = @"
-class C
-{
-    /// <summary>
-    /// <list name=""goo"" $$
-    /// </summary>
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <summary>
+                    /// <list name="goo" $$
+                    /// </summary>
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "type");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameAfterTextAttribute()
         {
-            var text = @"
-class C
-{
-    /// <summary>
-    /// <list goo="""" $$
-    /// </summary>
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <summary>
+                    /// <list goo="" $$
+                    /// </summary>
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "type");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameInWrongTagTypeEmptyElement()
         {
-            var text = @"
-class C
-{
-    /// <summary>
-    /// <list $$/>
-    /// </summary>
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <summary>
+                    /// <list $$/>
+                    /// </summary>
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "type");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeNameInWrongTagTypeElementStartTag()
         {
-            var text = @"
-class C
-{
-    /// <summary>
-    /// <see $$>
-    /// </summary>
-    void Goo() { }
-}
-";
+            var text = """
+                class C
+                {
+                    /// <summary>
+                    /// <see $$>
+                    /// </summary>
+                    void Goo() { }
+                }
+                """;
             await VerifyItemExistsAsync(text, "langword");
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/11489")]
         public async Task AttributeValueOnQuote()
         {
-            var text = @"
-class C
-{
-    /// <summary>
-    /// <see langword=""$$
-    /// </summary>
-    static void Goo()
-    {
-    }
-}";
+            var text = """
+                class C
+                {
+                    /// <summary>
+                    /// <see langword="$$
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "await", usePreviousCharAsTrigger: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/757")]
         public async Task TermAndDescriptionInsideItem()
         {
-            var text = @"
-class C
-{
-    /// <summary>
-    ///     <list type=""table"">
-    ///         <item>
-    ///             $$
-    ///         </item>
-    ///     </list>
-    /// </summary>
-    static void Goo()
-    {
-    }
-}";
+            var text = """
+                class C
+                {
+                    /// <summary>
+                    ///     <list type="table">
+                    ///         <item>
+                    ///             $$
+                    ///         </item>
+                    ///     </list>
+                    /// </summary>
+                    static void Goo()
+                    {
+                    }
+                }
+                """;
             await VerifyItemExistsAsync(text, "term");
             await VerifyItemExistsAsync(text, "description");
         }
@@ -978,73 +1057,101 @@ static void Goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52738")]
         public async Task RecordParam()
         {
-            await VerifyItemsExistAsync(@"
-/// $$
-public record Goo<T>(string MyParameter);
-", "param name=\"MyParameter\"", "typeparam name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// $$
+                public record Goo<T>(string MyParameter);
+                """, """
+                param name="MyParameter"
+                """, """
+                typeparam name="T"
+                """);
         }
 
         [Fact]
         public async Task PrimaryConstructor_Class_Param()
         {
-            await VerifyItemsExistAsync(@"
-/// $$
-public class Goo<T>(string MyParameter);
-", "param name=\"MyParameter\"", "typeparam name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// $$
+                public class Goo<T>(string MyParameter);
+                """, """
+                param name="MyParameter"
+                """, """
+                typeparam name="T"
+                """);
         }
 
         [Fact]
         public async Task PrimaryConstructor_Struct_Param()
         {
-            await VerifyItemsExistAsync(@"
-/// $$
-public struct Goo<T>(string MyParameter);
-", "param name=\"MyParameter\"", "typeparam name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// $$
+                public struct Goo<T>(string MyParameter);
+                """, """
+                param name="MyParameter"
+                """, """
+                typeparam name="T"
+                """);
         }
 
         [Fact]
         [WorkItem("https://github.com/dotnet/roslyn/issues/69293")]
         public async Task DelegateParamRef()
         {
-            await VerifyItemsExistAsync(@"
-/// <summary>
-/// $$
-/// <summary>
-public delegate void Goo<T>(string myParameter);
-", "paramref name=\"myParameter\"", "typeparamref name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// <summary>
+                /// $$
+                /// <summary>
+                public delegate void Goo<T>(string myParameter);
+                """, """
+                paramref name="myParameter"
+                """, """
+                typeparamref name="T"
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/52738")]
         public async Task RecordParamRef()
         {
-            await VerifyItemsExistAsync(@"
-/// <summary>
-/// $$
-/// <summary>
-public record Goo<T>(string MyParameter);
-", "paramref name=\"MyParameter\"", "typeparamref name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// <summary>
+                /// $$
+                /// <summary>
+                public record Goo<T>(string MyParameter);
+                """, """
+                paramref name="MyParameter"
+                """, """
+                typeparamref name="T"
+                """);
         }
 
         [Fact]
         public async Task PrimaryConstructor_Class_ParamRef()
         {
-            await VerifyItemsExistAsync(@"
-/// <summary>
-/// $$
-/// <summary>
-public class Goo<T>(string MyParameter);
-", "paramref name=\"MyParameter\"", "typeparamref name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// <summary>
+                /// $$
+                /// <summary>
+                public class Goo<T>(string MyParameter);
+                """, """
+                paramref name="MyParameter"
+                """, """
+                typeparamref name="T"
+                """);
         }
 
         [Fact]
         public async Task PrimaryConstructor_Struct_ParamRef()
         {
-            await VerifyItemsExistAsync(@"
-/// <summary>
-/// $$
-/// <summary>
-public struct Goo<T>(string MyParameter);
-", "paramref name=\"MyParameter\"", "typeparamref name=\"T\"");
+            await VerifyItemsExistAsync("""
+                /// <summary>
+                /// $$
+                /// <summary>
+                public struct Goo<T>(string MyParameter);
+                """, """
+                paramref name="MyParameter"
+                """, """
+                typeparamref name="T"
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/Completion/CompletionServiceTests.cs b/src/EditorFeatures/CSharpTest/Completion/CompletionServiceTests.cs
index cf3b94c5d7761..cf2904e0d943f 100644
--- a/src/EditorFeatures/CSharpTest/Completion/CompletionServiceTests.cs
+++ b/src/EditorFeatures/CSharpTest/Completion/CompletionServiceTests.cs
@@ -150,16 +150,17 @@ public async Task PassThroughOptions2()
         [Theory, CombinatorialData]
         public async Task GettingCompletionListShoudNotRunSourceGenerator(bool forkBeforeFreeze)
         {
-            var sourceMarkup = @"
-using System;
-
-namespace N
-{
-    public class C1
-    {
-        $$
-    }
-}";
+            var sourceMarkup = """
+                using System;
+
+                namespace N
+                {
+                    public class C1
+                    {
+                        $$
+                    }
+                }
+                """;
             MarkupTestFile.GetPosition(sourceMarkup.NormalizeLineEndings(), out var source, out int? position);
 
             var generatorRanCount = 0;
diff --git a/src/EditorFeatures/CSharpTest/ConvertNamespace/ConvertNamespaceCommandHandlerTests.cs b/src/EditorFeatures/CSharpTest/ConvertNamespace/ConvertNamespaceCommandHandlerTests.cs
index e6bf4475fa0e0..85be3fae92d39 100644
--- a/src/EditorFeatures/CSharpTest/ConvertNamespace/ConvertNamespaceCommandHandlerTests.cs
+++ b/src/EditorFeatures/CSharpTest/ConvertNamespace/ConvertNamespaceCommandHandlerTests.cs
@@ -36,12 +36,13 @@ public static ConvertNamespaceTestState CreateTestState(string markup)
                 => new(GetWorkspaceXml(markup));
 
             public static XElement GetWorkspaceXml(string markup)
-                => XElement.Parse(string.Format(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document>{0}</Document>
-    </Project>
-</Workspace>", markup));
+                => XElement.Parse(string.Format("""
+                    <Workspace>
+                        <Project Language="C#" CommonReferences="true">
+                            <Document>{0}</Document>
+                        </Project>
+                    </Workspace>
+                    """, markup));
 
             internal void AssertCodeIs(string expectedCode)
             {
@@ -58,299 +59,347 @@ public void SendTypeChar(char ch)
         public void TestSingleName()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace N$$
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace N$$
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace N;$$
+                """
+                namespace N;$$
 
-class C
-{
-}");
+                class C
+                {
+                }
+                """);
         }
 
         [WpfFact]
         public void TestOptionOff()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace N$$
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace N$$
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.Workspace.GlobalOptions.SetGlobalOption(CompleteStatementOptionsStorage.AutomaticallyCompleteStatementOnSemicolon, false);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace N;$$
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace N;$$
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
         }
 
         [WpfFact]
         public void TestDottedName1()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace A.B$$
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace A.B$$
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace A.B;$$
+                """
+                namespace A.B;$$
 
-class C
-{
-}");
+                class C
+                {
+                }
+                """);
         }
 
         [WpfFact]
         public void TestDottedName2()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace A.$$B
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace A.$$B
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace A.;$$B
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace A.;$$B
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
         }
 
         [WpfFact]
         public void TestDottedName3()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace A$$.B
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace A$$.B
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace A;$$.B
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace A;$$.B
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
         }
 
         [WpfFact]
         public void TestDottedName4()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace $$A.B
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace $$A.B
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace ;$$A.B
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace ;$$A.B
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
         }
 
         [WpfFact]
         public void TestAfterWhitespace()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace A.B  $$
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace A.B  $$
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace A.B;$$  
+                """
+                namespace A.B;$$  
 
-class C
-{
-}");
+                class C
+                {
+                }
+                """);
         }
 
         [WpfFact]
         public void TestBeforeName()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace $$N
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace $$N
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace ;$$N
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace ;$$N
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
         }
 
         [WpfFact]
         public void TestNestedNamespace()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace N$$
-{
-    namespace N2
-    {
-        class C
-        {
-        }
-    }
-}");
+                """
+                namespace N$$
+                {
+                    namespace N2
+                    {
+                        class C
+                        {
+                        }
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace N;$$
-{
-    namespace N2
-    {
-        class C
-        {
-        }
-    }
-}");
+                """
+                namespace N;$$
+                {
+                    namespace N2
+                    {
+                        class C
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [WpfFact]
         public void TestSiblingNamespace()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace N$$
-{
-}
-
-namespace N2
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace N$$
+                {
+                }
+
+                namespace N2
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace N;$$
-{
-}
-
-namespace N2
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace N;$$
+                {
+                }
+
+                namespace N2
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
         }
 
         [WpfFact]
         public void TestOuterUsings()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"
-using A;
-using B;
-
-namespace N$$
-{
-    class C
-    {
-    }
-}");
+                """
+                using A;
+                using B;
+
+                namespace N$$
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"
-using A;
-using B;
+                """
+                using A;
+                using B;
 
-namespace N;$$
+                namespace N;$$
 
-class C
-{
-}");
+                class C
+                {
+                }
+                """);
         }
 
         [WpfFact]
         public void TestInnerUsings()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"
-namespace N$$
-{
-    using A;
-    using B;
-
-    class C
-    {
-    }
-}");
+                """
+                namespace N$$
+                {
+                    using A;
+                    using B;
+
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"
-namespace N;$$
+                """
+                namespace N;$$
 
-using A;
-using B;
+                using A;
+                using B;
 
-class C
-{
-}");
+                class C
+                {
+                }
+                """);
         }
 
         [WpfFact]
         public void TestCommentAfterName()
         {
             using var testState = ConvertNamespaceTestState.CreateTestState(
-@"namespace N$$ // Goo
-{
-    class C
-    {
-    }
-}");
+                """
+                namespace N$$ // Goo
+                {
+                    class C
+                    {
+                    }
+                }
+                """);
 
             testState.SendTypeChar(';');
             testState.AssertCodeIs(
-@"namespace N;$$ // Goo
+                """
+                namespace N;$$ // Goo
 
-class C
-{
-}");
+                class C
+                {
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/Debugging/DataTipInfoGetterTests.cs b/src/EditorFeatures/CSharpTest/Debugging/DataTipInfoGetterTests.cs
index 8725edc93e586..a812ec2ebc5be 100644
--- a/src/EditorFeatures/CSharpTest/Debugging/DataTipInfoGetterTests.cs
+++ b/src/EditorFeatures/CSharpTest/Debugging/DataTipInfoGetterTests.cs
@@ -72,229 +72,265 @@ public async Task TestCSharpLanguageDebugInfoGetDataTipSpanAndText()
         public async Task Test1()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|Sys$$tem|].Console.WriteLine(args);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|Sys$$tem|].Console.WriteLine(args);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task Test2()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|System$$.Console|].WriteLine(args);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|System$$.Console|].WriteLine(args);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task Test3()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|System.$$Console|].WriteLine(args);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|System.$$Console|].WriteLine(args);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task Test4()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|System.Con$$sole|].WriteLine(args);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|System.Con$$sole|].WriteLine(args);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task Test5()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|System.Console.Wri$$teLine|](args);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|System.Console.Wri$$teLine|](args);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task Test6()
         {
             await TestNoDataTipAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|System.Console.WriteLine|]$$(args);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|System.Console.WriteLine|]$$(args);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task Test7()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    System.Console.WriteLine($$[|args|]);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    System.Console.WriteLine($$[|args|]);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task Test8()
         {
             await TestNoDataTipAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|System.Console.WriteLine|](args$$);
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|System.Console.WriteLine|](args$$);
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestVar()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|va$$r|] v = 0;
-  }
-}", "int");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|va$$r|] v = 0;
+                  }
+                }
+                """, "int");
         }
 
         [Fact]
         public async Task TestVariableType()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    [|in$$t|] i = 0;
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    [|in$$t|] i = 0;
+                  }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestVariableIdentifier()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    int [|$$i|] = 0;
-  }
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    int [|$$i|] = 0;
+                  }
+                }
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/539910")]
         public async Task TestLiterals()
         {
             await TestAsync(
-@"class C
-{
-  void Goo()
-  {
-    int i = [|4$$2|];
-  }
-}", "int");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    int i = [|4$$2|];
+                  }
+                }
+                """, "int");
         }
 
         [Fact]
         public async Task TestNonExpressions()
         {
             await TestNoDataTipAsync(
-@"class C
-{
-  void Goo()
-  {
-    int i = 42;
-  }$$
-}");
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                    int i = 42;
+                  }$$
+                }
+                """);
         }
 
         [Fact]
         public async Task TestParameterIdentifier()
         {
             await TestAsync(
-@"class C
-{
-  void Goo(int [|$$i|])
-  {
-  }
-}");
+                """
+                class C
+                {
+                  void Goo(int [|$$i|])
+                  {
+                  }
+                }
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/942699")]
         public async Task TestCatchIdentifier()
         {
             await TestAsync(
-@"class C
-{
-    void Goo()
-    {
-        try
-        {
-        }
-        catch (System.Exception [|$$e|])
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void Goo()
+                    {
+                        try
+                        {
+                        }
+                        catch (System.Exception [|$$e|])
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestEvent()
         {
             await TestAsync(
-@"class C
-{
-    event System.Action [|$$E|];
-}");
+                """
+                class C
+                {
+                    event System.Action [|$$E|];
+                }
+                """);
 
             await TestAsync(
-@"class C
-{
-    event System.Action [|$$E|]
-    {
-        add { }
-        remove { }
-    }
-}");
+                """
+                class C
+                {
+                    event System.Action [|$$E|]
+                    {
+                        add { }
+                        remove { }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestMethod()
         {
             await TestAsync(
-@"class C
-{
-    int [|$$M|]() { }
-}");
+                """
+                class C
+                {
+                    int [|$$M|]() { }
+                }
+                """);
         }
 
         [Fact]
@@ -302,140 +338,157 @@ public async Task TestTypeParameter()
         {
             await TestAsync("class C<T, [|$$U|], V> { }");
             await TestAsync(
-@"class C
-{
-    void M<T, [|$$U|]>() { }
-}");
+                """
+                class C
+                {
+                    void M<T, [|$$U|]>() { }
+                }
+                """);
         }
 
         [Fact]
         public async Task UsingAlias()
         {
             await TestAsync(
-@"using [|$$S|] = Static;
+                """
+                using [|$$S|] = Static;
 
-static class Static
-{
-}");
+                static class Static
+                {
+                }
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/540921")]
         public async Task TestForEachIdentifier()
         {
             await TestAsync(
-@"class C
-{
-  void Goo(string[] args)
-  {
-    foreach (string [|$$s|] in args)
-    {
-    }
-  }
-}");
+                """
+                class C
+                {
+                  void Goo(string[] args)
+                  {
+                    foreach (string [|$$s|] in args)
+                    {
+                    }
+                  }
+                }
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/546328")]
         public async Task TestProperty()
         {
             await TestAsync(
-@"namespace ConsoleApplication16
-{
-    class C
-    {
-        public int [|$$goo|] { get; private set; } // hover over me
-        public C()
-        {
-            this.goo = 1;
-        }
-        public int Goo()
-        {
-            return 2; // breakpoint here
-        }
-    }
-    class Program
-    {
-        static void Main(string[] args)
-        {
-            new C().Goo();
-        }
-    }
-}
-");
+                """
+                namespace ConsoleApplication16
+                {
+                    class C
+                    {
+                        public int [|$$goo|] { get; private set; } // hover over me
+                        public C()
+                        {
+                            this.goo = 1;
+                        }
+                        public int Goo()
+                        {
+                            return 2; // breakpoint here
+                        }
+                    }
+                    class Program
+                    {
+                        static void Main(string[] args)
+                        {
+                            new C().Goo();
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestQueryIdentifier()
         {
             await TestAsync( // From
-@"class C
-{
-    object Goo(string[] args)
-    {
-        return from [|$$a|] in args select a;
-    }
-}");
+                """
+                class C
+                {
+                    object Goo(string[] args)
+                    {
+                        return from [|$$a|] in args select a;
+                    }
+                }
+                """);
             await TestAsync( // Let
-@"class C
-{
-    object Goo(string[] args)
-    {
-        return from a in args let [|$$b|] = ""END"" select a + b;
-    }
-}");
+                """
+                class C
+                {
+                    object Goo(string[] args)
+                    {
+                        return from a in args let [|$$b|] = "END" select a + b;
+                    }
+                }
+                """);
             await TestAsync( // Join
-@"class C
-{
-    object Goo(string[] args)
-    {
-        return from a in args join [|$$b|] in args on a equals b;
-    }
-}");
+                """
+                class C
+                {
+                    object Goo(string[] args)
+                    {
+                        return from a in args join [|$$b|] in args on a equals b;
+                    }
+                }
+                """);
             await TestAsync( // Join Into
-@"class C
-{
-    object Goo(string[] args)
-    {
-        return from a in args join b in args on a equals b into [|$$c|];
-    }
-}");
+                """
+                class C
+                {
+                    object Goo(string[] args)
+                    {
+                        return from a in args join b in args on a equals b into [|$$c|];
+                    }
+                }
+                """);
             await TestAsync( // Continuation
-@"class C
-{
-    object Goo(string[] args)
-    {
-        return from a in args select a into [|$$b|] from c in b select c;
-    }
-}");
+                """
+                class C
+                {
+                    object Goo(string[] args)
+                    {
+                        return from a in args select a into [|$$b|] from c in b select c;
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1077843")]
         public async Task TestConditionalAccessExpression()
         {
-            var sourceTemplate = @"
-class A
-{{
-    B B;
-
-    object M()
-    {{
-        return {0};
-    }}
-}}
-
-class B
-{{
-    C C;
-}}
-
-class C
-{{
-    D D;
-}}
-
-class D
-{{
-}}
-";
+            var sourceTemplate = """
+                class A
+                {{
+                    B B;
+
+                    object M()
+                    {{
+                        return {0};
+                    }}
+                }}
+
+                class B
+                {{
+                    C C;
+                }}
+
+                class C
+                {{
+                    D D;
+                }}
+
+                class D
+                {{
+                }}
+                """;
 
             // One level.
             await TestAsync(string.Format(sourceTemplate, "[|Me?.$$B|]"));
@@ -483,26 +536,26 @@ class D
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1077843")]
         public async Task TestConditionalAccessExpression_Trivia()
         {
-            var sourceTemplate = @"
-class A
-{{
-    B B;
-
-    object M()
-    {{
-        return {0};
-    }}
-}}
-
-class B
-{{
-    C C;
-}}
-
-class C
-{{
-}}
-";
+            var sourceTemplate = """
+                class A
+                {{
+                    B B;
+
+                    object M()
+                    {{
+                        return {0};
+                    }}
+                }}
+
+                class B
+                {{
+                    C C;
+                }}
+
+                class C
+                {{
+                }}
+                """;
 
             await TestAsync(string.Format(sourceTemplate, "/*1*/[|$$Me|]/*2*/?./*3*/B/*4*/?./*5*/C/*6*/"));
             await TestAsync(string.Format(sourceTemplate, "/*1*/[|Me/*2*/?./*3*/$$B|]/*4*/?./*5*/C/*6*/"));
diff --git a/src/EditorFeatures/CSharpTest/Debugging/LocationInfoGetterTests.cs b/src/EditorFeatures/CSharpTest/Debugging/LocationInfoGetterTests.cs
index e7c7bbac5f4d6..57d3af9f36c74 100644
--- a/src/EditorFeatures/CSharpTest/Debugging/LocationInfoGetterTests.cs
+++ b/src/EditorFeatures/CSharpTest/Debugging/LocationInfoGetterTests.cs
@@ -43,28 +43,31 @@ public async Task TestClass()
         public async Task TestMethod()
         {
             await TestAsync(
-@"class Class
-{
-    public static void Meth$$od()
-    {
-    }
-}
-", "Class.Method()", 0);
+                """
+                class Class
+                {
+                    public static void Meth$$od()
+                    {
+                    }
+                }
+                """, "Class.Method()", 0);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/527668")]
         public async Task TestNamespace()
         {
             await TestAsync(
-@"namespace Namespace
-{
-    class Class
-    {
-        void Method()
-        {
-        }$$
-    }
-}", "Namespace.Class.Method()", 2);
+                """
+                namespace Namespace
+                {
+                    class Class
+                    {
+                        void Method()
+                        {
+                        }$$
+                    }
+                }
+                """, "Namespace.Class.Method()", 2);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/49000")]
@@ -73,435 +76,478 @@ public async Task TestFileScopedNamespace()
             // This test behavior is incorrect. This should be Namespace.Class.Method.
             // See the associated WorkItem for details.
             await TestAsync(
-@"namespace Namespace;
+                """
+                namespace Namespace;
 
-class Class
-{
-    void Method()
-    {
-    }$$
-}
-", "Namespace.Class.Method()", 2);
+                class Class
+                {
+                    void Method()
+                    {
+                    }$$
+                }
+                """, "Namespace.Class.Method()", 2);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/527668")]
         public async Task TestDottedNamespace()
         {
             await TestAsync(
-@"namespace Namespace.Another
-{
-    class Class
-    {
-        void Method()
-        {
-        }$$
-    }
-}", "Namespace.Another.Class.Method()", 2);
+                """
+                namespace Namespace.Another
+                {
+                    class Class
+                    {
+                        void Method()
+                        {
+                        }$$
+                    }
+                }
+                """, "Namespace.Another.Class.Method()", 2);
         }
 
         [Fact]
         public async Task TestNestedNamespace()
         {
             await TestAsync(
-@"namespace Namespace
-{
-    namespace Another
-    {
-        class Class
-        {
-            void Method()
-            {
-            }$$
-        }
-    }
-}", "Namespace.Another.Class.Method()", 2);
+                """
+                namespace Namespace
+                {
+                    namespace Another
+                    {
+                        class Class
+                        {
+                            void Method()
+                            {
+                            }$$
+                        }
+                    }
+                }
+                """, "Namespace.Another.Class.Method()", 2);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/527668")]
         public async Task TestNestedType()
         {
             await TestAsync(
-@"class Outer
-{
-    class Inner
-    {
-        void Quux()
-        {$$
-        }
-    }
-}", "Outer.Inner.Quux()", 1);
+                """
+                class Outer
+                {
+                    class Inner
+                    {
+                        void Quux()
+                        {$$
+                        }
+                    }
+                }
+                """, "Outer.Inner.Quux()", 1);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/527668")]
         public async Task TestPropertyGetter()
         {
             await TestAsync(
-@"class Class
-{
-    string Property
-    {
-        get
-        {
-            return null;$$
-        }
-    }
-}", "Class.Property", 4);
+                """
+                class Class
+                {
+                    string Property
+                    {
+                        get
+                        {
+                            return null;$$
+                        }
+                    }
+                }
+                """, "Class.Property", 4);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/527668")]
         public async Task TestPropertySetter()
         {
             await TestAsync(
-@"class Class
-{
-    string Property
-    {
-        get
-        {
-            return null;
-        }
+                """
+                class Class
+                {
+                    string Property
+                    {
+                        get
+                        {
+                            return null;
+                        }
 
-        set
-        {
-            string s = $$value;
-        }
-    }
-}", "Class.Property", 9);
+                        set
+                        {
+                            string s = $$value;
+                        }
+                    }
+                }
+                """, "Class.Property", 9);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/538415")]
         public async Task TestField()
         {
             await TestAsync(
-@"class Class
-{
-    int fi$$eld;
-}", "Class.field", 0);
+                """
+                class Class
+                {
+                    int fi$$eld;
+                }
+                """, "Class.field", 0);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/543494")]
         public async Task TestLambdaInFieldInitializer()
         {
             await TestAsync(
-@"class Class
-{
-    Action<int> a = b => { in$$t c; };
-}", "Class.a", 0);
+                """
+                class Class
+                {
+                    Action<int> a = b => { in$$t c; };
+                }
+                """, "Class.a", 0);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/543494")]
         public async Task TestMultipleFields()
         {
             await TestAsync(
-@"class Class
-{
-    int a1, a$$2;
-}", "Class.a2", 0);
+                """
+                class Class
+                {
+                    int a1, a$$2;
+                }
+                """, "Class.a2", 0);
         }
 
         [Fact]
         public async Task TestConstructor()
         {
             await TestAsync(
-@"class C1
-{
-    C1()
-    {
+                """
+                class C1
+                {
+                    C1()
+                    {
 
-    $$}
-}
-", "C1.C1()", 3);
+                    $$}
+                }
+                """, "C1.C1()", 3);
         }
 
         [Fact]
         public async Task TestDestructor()
         {
             await TestAsync(
-@"class C1
-{
-    ~C1()
-    {
-    $$}
-}
-", "C1.~C1()", 2);
+                """
+                class C1
+                {
+                    ~C1()
+                    {
+                    $$}
+                }
+                """, "C1.~C1()", 2);
         }
 
         [Fact]
         public async Task TestOperator()
         {
             await TestAsync(
-@"namespace N1
-{
-    class C1
-    {
-        public static int operator +(C1 x, C1 y)
-        {
-            $$return 42;
-        }
-    }
-}
-", "N1.C1.+(C1 x, C1 y)", 2); // Old implementation reports "operator +" (rather than "+")...
+                """
+                namespace N1
+                {
+                    class C1
+                    {
+                        public static int operator +(C1 x, C1 y)
+                        {
+                            $$return 42;
+                        }
+                    }
+                }
+                """, "N1.C1.+(C1 x, C1 y)", 2); // Old implementation reports "operator +" (rather than "+")...
         }
 
         [Fact]
         public async Task TestConversionOperator()
         {
             await TestAsync(
-@"namespace N1
-{
-    class C1
-    {
-        public static explicit operator N1.C2(N1.C1 x)
-        {
-            $$return null;
-        }
-    }
-    class C2
-    {
-    }
-}
-", "N1.C1.N1.C2(N1.C1 x)", 2); // Old implementation reports "explicit operator N1.C2" (rather than "N1.C2")...
+                """
+                namespace N1
+                {
+                    class C1
+                    {
+                        public static explicit operator N1.C2(N1.C1 x)
+                        {
+                            $$return null;
+                        }
+                    }
+                    class C2
+                    {
+                    }
+                }
+                """, "N1.C1.N1.C2(N1.C1 x)", 2); // Old implementation reports "explicit operator N1.C2" (rather than "N1.C2")...
         }
 
         [Fact]
         public async Task TestEvent()
         {
             await TestAsync(
-@"class C1
-{
-    delegate void D1();
-    event D1 e1$$;
-}
-", "C1.e1", 0);
+                """
+                class C1
+                {
+                    delegate void D1();
+                    event D1 e1$$;
+                }
+                """, "C1.e1", 0);
         }
 
         [Fact]
         public async Task TextExplicitInterfaceImplementation()
         {
             await TestAsync(
-@"interface I1
-{
-    void M1();
-}
-class C1
-{
-    void I1.M1()
-    {
-    $$}
-}
-", "C1.M1()", 2);
+                """
+                interface I1
+                {
+                    void M1();
+                }
+                class C1
+                {
+                    void I1.M1()
+                    {
+                    $$}
+                }
+                """, "C1.M1()", 2);
         }
 
         [Fact]
         public async Task TextIndexer()
         {
             await TestAsync(
-@"class C1
-{
-    C1 this[int x]
-    {
-        get
-        {
-            $$return null;
-        }
-    }
-}
-", "C1.this[int x]", 4);
+                """
+                class C1
+                {
+                    C1 this[int x]
+                    {
+                        get
+                        {
+                            $$return null;
+                        }
+                    }
+                }
+                """, "C1.this[int x]", 4);
         }
 
         [Fact]
         public async Task TestParamsParameter()
         {
             await TestAsync(
-@"class C1
-{
-    void M1(params int[] x) { $$ }
-}
-", "C1.M1(params int[] x)", 0);
+                """
+                class C1
+                {
+                    void M1(params int[] x) { $$ }
+                }
+                """, "C1.M1(params int[] x)", 0);
         }
 
         [Fact]
         public async Task TestArglistParameter()
         {
             await TestAsync(
-@"class C1
-{
-    void M1(__arglist) { $$ }
-}
-", "C1.M1(__arglist)", 0); // Old implementation does not show "__arglist"...
+                """
+                class C1
+                {
+                    void M1(__arglist) { $$ }
+                }
+                """, "C1.M1(__arglist)", 0); // Old implementation does not show "__arglist"...
         }
 
         [Fact]
         public async Task TestRefAndOutParameters()
         {
             await TestAsync(
-@"class C1
-{
-    void M1( ref int x, out int y )
-    {
-        $$y = x;
-    }
-}
-", "C1.M1( ref int x, out int y )", 2); // Old implementation did not show extra spaces around the parameters...
+                """
+                class C1
+                {
+                    void M1( ref int x, out int y )
+                    {
+                        $$y = x;
+                    }
+                }
+                """, "C1.M1( ref int x, out int y )", 2); // Old implementation did not show extra spaces around the parameters...
         }
 
         [Fact]
         public async Task TestOptionalParameters()
         {
             await TestAsync(
-@"class C1
-{
-    void M1(int x =1)
-    {
-        $$y = x;
-    }
-}
-", "C1.M1(int x =1)", 2);
+                """
+                class C1
+                {
+                    void M1(int x =1)
+                    {
+                        $$y = x;
+                    }
+                }
+                """, "C1.M1(int x =1)", 2);
         }
 
         [Fact]
         public async Task TestExtensionMethod()
         {
             await TestAsync(
-@"static class C1
-{
-    static void M1(this int x)
-    {
-    }$$
-}
-", "C1.M1(this int x)", 2);
+                """
+                static class C1
+                {
+                    static void M1(this int x)
+                    {
+                    }$$
+                }
+                """, "C1.M1(this int x)", 2);
         }
 
         [Fact]
         public async Task TestGenericType()
         {
             await TestAsync(
-@"class C1<T, U>
-{
-    static void M1() { $$ }
-}
-", "C1.M1()", 0);
+                """
+                class C1<T, U>
+                {
+                    static void M1() { $$ }
+                }
+                """, "C1.M1()", 0);
         }
 
         [Fact]
         public async Task TestGenericMethod()
         {
             await TestAsync(
-@"class C1<T, U>
-{
-    static void M1<V>() { $$ }
-}
-", "C1.M1()", 0);
+                """
+                class C1<T, U>
+                {
+                    static void M1<V>() { $$ }
+                }
+                """, "C1.M1()", 0);
         }
 
         [Fact]
         public async Task TestGenericParameters()
         {
             await TestAsync(
-@"class C1<T, U>
-{
-    static void M1<V>(C1<int, V> x, V y) { $$ }
-}
-", "C1.M1(C1<int, V> x, V y)", 0);
+                """
+                class C1<T, U>
+                {
+                    static void M1<V>(C1<int, V> x, V y) { $$ }
+                }
+                """, "C1.M1(C1<int, V> x, V y)", 0);
         }
 
         [Fact]
         public async Task TestMissingNamespace()
         {
             await TestAsync(
-@"{
-    class Class
-    {
-        int a1, a$$2;
-    }
-}", "Class.a2", 0);
+                """
+                {
+                    class Class
+                    {
+                        int a1, a$$2;
+                    }
+                }
+                """, "Class.a2", 0);
         }
 
         [Fact]
         public async Task TestMissingNamespaceName()
         {
             await TestAsync(
-@"namespace
-{
-    class C1
-    {
-        int M1()
-        $${
-        }
-    }
-}", "?.C1.M1()", 1);
+                """
+                namespace
+                {
+                    class C1
+                    {
+                        int M1()
+                        $${
+                        }
+                    }
+                }
+                """, "?.C1.M1()", 1);
         }
 
         [Fact]
         public async Task TestMissingClassName()
         {
             await TestAsync(
-@"namespace N1
-    class 
-    {
-        int M1()
-        $${
-        }
-    }
-}", "N1.M1()", 1); // Old implementation displayed "N1.?.M1", but we don't see a class declaration in the syntax tree...
+                """
+                namespace N1
+                    class 
+                    {
+                        int M1()
+                        $${
+                        }
+                    }
+                }
+                """, "N1.M1()", 1); // Old implementation displayed "N1.?.M1", but we don't see a class declaration in the syntax tree...
         }
 
         [Fact]
         public async Task TestMissingMethodName()
         {
             await TestAsync(
-@"namespace N1
-{
-    class C1
-    {
-        static void (ref int x)
-        {
-        $$}
-    }
-}", "N1.C1", 4);
+                """
+                namespace N1
+                {
+                    class C1
+                    {
+                        static void (ref int x)
+                        {
+                        $$}
+                    }
+                }
+                """, "N1.C1", 4);
         }
 
         [Fact]
         public async Task TestMissingParameterList()
         {
             await TestAsync(
-@"namespace N1
-{
-    class C1
-    {
-        static void M1
-        {
-        $$}
-    }
-}", "N1.C1.M1", 2);
+                """
+                namespace N1
+                {
+                    class C1
+                    {
+                        static void M1
+                        {
+                        $$}
+                    }
+                }
+                """, "N1.C1.M1", 2);
         }
 
         [Fact]
         public async Task TopLevelField()
         {
             await TestAsync(
-@"$$int f1;
-", "f1", 0, new CSharpParseOptions(kind: SourceCodeKind.Script));
+                """
+                $$int f1;
+                """, "f1", 0, new CSharpParseOptions(kind: SourceCodeKind.Script));
         }
 
         [Fact]
         public async Task TopLevelMethod()
         {
             await TestAsync(
-@"int M1(int x)
-{
-$$}
-", "M1(int x)", 2, new CSharpParseOptions(kind: SourceCodeKind.Script));
+                """
+                int M1(int x)
+                {
+                $$}
+                """, "M1(int x)", 2, new CSharpParseOptions(kind: SourceCodeKind.Script));
         }
 
         [Fact]
         public async Task TopLevelStatement()
         {
             await TestAsync(
-@"
-
-$$System.Console.WriteLine(""Hello"")
-", null, 0, new CSharpParseOptions(kind: SourceCodeKind.Script));
+                """
+                $$System.Console.WriteLine("Hello")
+                """, null, 0, new CSharpParseOptions(kind: SourceCodeKind.Script));
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/Debugging/NameResolverTests.cs b/src/EditorFeatures/CSharpTest/Debugging/NameResolverTests.cs
index f4e8404ab627c..f2a17597662d5 100644
--- a/src/EditorFeatures/CSharpTest/Debugging/NameResolverTests.cs
+++ b/src/EditorFeatures/CSharpTest/Debugging/NameResolverTests.cs
@@ -42,12 +42,14 @@ public async Task TestCSharpLanguageDebugInfoCreateNameResolver()
         public async Task TestSimpleNameInClass()
         {
             var text =
-@"class C
-{
-  void Goo()
-  {
-  }
-}";
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "C.Goo()");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "C.Goo()");
@@ -63,16 +65,17 @@ void Goo()
         public async Task TestSimpleNameInNamespace()
         {
             var text =
-@"
-namespace N
-{
-  class C
-  {
-    void Goo()
-    {
-    }
-  }
-}";
+                """
+                namespace N
+                {
+                  class C
+                  {
+                    void Goo()
+                    {
+                    }
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "N.C.Goo()");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "N.C.Goo()");
@@ -91,16 +94,17 @@ void Goo()
         public async Task TestSimpleNameInGenericClassNamespace()
         {
             var text =
-@"
-namespace N
-{
-  class C<T>
-  {
-    void Goo()
-    {
-    }
-  }
-}";
+                """
+                namespace N
+                {
+                  class C<T>
+                  {
+                    void Goo()
+                    {
+                    }
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "N.C<T>.Goo()");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "N.C<T>.Goo()");
@@ -120,16 +124,17 @@ void Goo()
         public async Task TestGenericNameInClassNamespace()
         {
             var text =
-@"
-namespace N
-{
-  class C
-  {
-    void Goo<T>()
-    {
-    }
-  }
-}";
+                """
+                namespace N
+                {
+                  class C
+                  {
+                    void Goo<T>()
+                    {
+                    }
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "N.C.Goo<T>()");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "N.C.Goo<T>()");
@@ -154,16 +159,18 @@ void Goo<T>()
         public async Task TestOverloadsInSingleClass()
         {
             var text =
-@"class C
-{
-  void Goo()
-  {
-  }
-
-  void Goo(int i)
-  {
-  }
-}";
+                """
+                class C
+                {
+                  void Goo()
+                  {
+                  }
+
+                  void Goo(int i)
+                  {
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "C.Goo()", "C.Goo(int)");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "C.Goo()", "C.Goo(int)");
@@ -180,25 +187,27 @@ void Goo(int i)
         public async Task TestMethodsInMultipleClasses()
         {
             var text =
-@"namespace N
-{
-  class C
-  {
-    void Goo()
-    {
-    }
-  }
-}
-
-namespace N1
-{
-  class C
-  {
-    void Goo(int i)
-    {
-    }
-  }
-}";
+                """
+                namespace N
+                {
+                  class C
+                  {
+                    void Goo()
+                    {
+                    }
+                  }
+                }
+
+                namespace N1
+                {
+                  class C
+                  {
+                    void Goo(int i)
+                    {
+                    }
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "N1.C.Goo(int)", "N.C.Goo()");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "N1.C.Goo(int)", "N.C.Goo()");
@@ -216,25 +225,27 @@ void Goo(int i)
         public async Task TestMethodsWithDifferentArityInMultipleClasses()
         {
             var text =
-@"namespace N
-{
-  class C
-  {
-    void Goo()
-    {
-    }
-  }
-}
-
-namespace N1
-{
-  class C
-  {
-    void Goo<T>(int i)
-    {
-    }
-  }
-}";
+                """
+                namespace N
+                {
+                  class C
+                  {
+                    void Goo()
+                    {
+                    }
+                  }
+                }
+
+                namespace N1
+                {
+                  class C
+                  {
+                    void Goo<T>(int i)
+                    {
+                    }
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "N1.C.Goo<T>(int)", "N.C.Goo()");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "N1.C.Goo<T>(int)", "N.C.Goo()");
@@ -256,20 +267,22 @@ void Goo<T>(int i)
         public async Task TestOverloadsWithMultipleParametersInSingleClass()
         {
             var text =
-@"class C
-{
-  void Goo(int a)
-  {
-  }
-
-  void Goo(int a, string b = ""bb"")
-  {
-  }
-
-  void Goo(__arglist)
-  {
-  }
-}";
+                """
+                class C
+                {
+                  void Goo(int a)
+                  {
+                  }
+
+                  void Goo(int a, string b = "bb")
+                  {
+                  }
+
+                  void Goo(__arglist)
+                  {
+                  }
+                }
+                """;
             await TestAsync(text, "Goo", "C.Goo(int)", "C.Goo(int, [string])", "C.Goo(__arglist)");
             await TestAsync(text, "goo");
             await TestAsync(text, "C.Goo", "C.Goo(int)", "C.Goo(int, [string])", "C.Goo(__arglist)");
@@ -298,12 +311,14 @@ void Goo(__arglist)
         public async Task AccessorTests()
         {
             var text =
-@"class C
-{
-  int Property1 { get { return 42; } }
-  int Property2 { set { } }
-  int Property3 { get; set;}
-}";
+                """
+                class C
+                {
+                  int Property1 { get { return 42; } }
+                  int Property2 { set { } }
+                  int Property3 { get; set;}
+                }
+                """;
             await TestAsync(text, "Property1", "C.Property1");
             await TestAsync(text, "Property2", "C.Property2");
             await TestAsync(text, "Property3", "C.Property3");
@@ -313,19 +328,21 @@ int Property2 { set { } }
         public async Task NegativeTests()
         {
             var text =
-@"using System.Runtime.CompilerServices;
-abstract class C
-{
-    public abstract void AbstractMethod(int a);
-    int Field;
-    delegate void Delegate();
-    event Delegate Event;
-    [IndexerName(""ABCD"")]
-    int this[int i] { get { return i; } }
-    void Goo() { }
-    void Goo(int x = 1, int y = 2) { }
-    ~C() { }
-}";
+                """
+                using System.Runtime.CompilerServices;
+                abstract class C
+                {
+                    public abstract void AbstractMethod(int a);
+                    int Field;
+                    delegate void Delegate();
+                    event Delegate Event;
+                    [IndexerName("ABCD")]
+                    int this[int i] { get { return i; } }
+                    void Goo() { }
+                    void Goo(int x = 1, int y = 2) { }
+                    ~C() { }
+                }
+                """;
             await TestAsync(text, "AbstractMethod");
             await TestAsync(text, "Field");
             await TestAsync(text, "Delegate");
@@ -363,16 +380,18 @@ void Goo(int x = 1, int y = 2) { }
         public async Task TestInstanceConstructors()
         {
             var text =
-@"class C
-{
-  public C() { }
-}
-
-class G<T>
-{
-  public G() { }
-  ~G() { }
-}";
+                """
+                class C
+                {
+                  public C() { }
+                }
+
+                class G<T>
+                {
+                  public G() { }
+                  ~G() { }
+                }
+                """;
             await TestAsync(text, "C", "C.C()");
             await TestAsync(text, "C.C", "C.C()");
             await TestAsync(text, "C.C()", "C.C()");
@@ -404,12 +423,14 @@ public G() { }
         public async Task TestStaticConstructors()
         {
             var text =
-@"class C
-{
-  static C()
-  {
-  }
-}";
+                """
+                class C
+                {
+                  static C()
+                  {
+                  }
+                }
+                """;
             await TestAsync(text, "C", "C.C()");
             await TestAsync(text, "C.C", "C.C()");
             await TestAsync(text, "C.C()", "C.C()");
@@ -427,16 +448,18 @@ static C()
         public async Task TestAllConstructors()
         {
             var text =
-@"class C
-{
-  static C()
-  {
-  }
-
-  public C(int i)
-  {
-  }
-}";
+                """
+                class C
+                {
+                  static C()
+                  {
+                  }
+
+                  public C(int i)
+                  {
+                  }
+                }
+                """;
             await TestAsync(text, "C", "C.C(int)", "C.C()");
             await TestAsync(text, "C.C", "C.C(int)", "C.C()");
             await TestAsync(text, "C.C()", "C.C()");
@@ -452,20 +475,22 @@ public C(int i)
         public async Task TestPartialMethods()
         {
             var text =
-@"partial class C
-{
-  partial int M1();
+                """
+                partial class C
+                {
+                  partial int M1();
 
-  partial void M2() { }
+                  partial void M2() { }
 
-  partial void M2();
+                  partial void M2();
 
-  partial int M3();
+                  partial int M3();
 
-  partial int M3(int x) { return 0; }
+                  partial int M3(int x) { return 0; }
 
-  partial void M4() { }
-}";
+                  partial void M4() { }
+                }
+                """;
             await TestAsync(text, "M1");
             await TestAsync(text, "C.M1");
             await TestAsync(text, "M2", "C.M2()");
@@ -479,10 +504,12 @@ partial void M4() { }
         public async Task TestLeadingAndTrailingText()
         {
             var text =
-@"class C
-{
-  void Goo() { };
-}";
+                """
+                class C
+                {
+                  void Goo() { };
+                }
+                """;
             await TestAsync(text, "Goo;", "C.Goo()");
             await TestAsync(text,
 @"Goo();", "C.Goo()");
@@ -496,20 +523,24 @@ await TestAsync(text,
             await TestAsync(text,
 @"Goo(); // comment", "C.Goo()");
             await TestAsync(text,
-@"/*comment*/
-           Goo(/* params */); /* comment", "C.Goo()");
+                """
+                /*comment*/
+                           Goo(/* params */); /* comment
+                """, "C.Goo()");
         }
 
         [Fact]
         public async Task TestEscapedKeywords()
         {
             var text =
-@"struct @true { }
-class @foreach
-{
-    void where(@true @this) { }
-    void @false() { }
-}";
+                """
+                struct @true { }
+                class @foreach
+                {
+                    void where(@true @this) { }
+                    void @false() { }
+                }
+                """;
             await TestAsync(text, "where", "@foreach.where(@true)");
             await TestAsync(text, "@where", "@foreach.where(@true)");
             await TestAsync(text, "@foreach.where", "@foreach.where(@true)");
@@ -523,11 +554,13 @@ void @false() { }
         public async Task TestAliasQualifiedNames()
         {
             var text =
-@"extern alias A
-class C
-{
-    void Goo(D d) { }
-}";
+                """
+                extern alias A
+                class C
+                {
+                    void Goo(D d) { }
+                }
+                """;
             await TestAsync(text, "A::Goo");
             await TestAsync(text, "A::Goo(A::B)");
             await TestAsync(text, "A::Goo(A::B)");
@@ -539,39 +572,41 @@ void Goo(D d) { }
         public async Task TestNestedTypesAndNamespaces()
         {
             var text =
-@"namespace N1
-{
-  class C
-  {
-    void Goo() { }
-  }
-  namespace N2
-  {
-    class C { }
-  }
-  namespace N3
-  {
-    class D { }
-  }
-  namespace N4
-  {
-    class C
-    {
-      void Goo(double x) { }
-
-      class D
-      {
-        void Goo() { }
-
-        class E
-        {
-          void Goo() { }
-        }
-      }
-    }
-  }
-  namespace N5 { }
-}";
+                """
+                namespace N1
+                {
+                  class C
+                  {
+                    void Goo() { }
+                  }
+                  namespace N2
+                  {
+                    class C { }
+                  }
+                  namespace N3
+                  {
+                    class D { }
+                  }
+                  namespace N4
+                  {
+                    class C
+                    {
+                      void Goo(double x) { }
+
+                      class D
+                      {
+                        void Goo() { }
+
+                        class E
+                        {
+                          void Goo() { }
+                        }
+                      }
+                    }
+                  }
+                  namespace N5 { }
+                }
+                """;
 
             await TestAsync(text, "Goo", "N1.N4.C.Goo(double)", "N1.N4.C.D.Goo()", "N1.N4.C.D.E.Goo()", "N1.C.Goo()");
             await TestAsync(text, "C.Goo", "N1.N4.C.Goo(double)", "N1.C.Goo()");
@@ -586,14 +621,16 @@ namespace N5 { }
         public async Task TestInterfaces()
         {
             var text =
-@"interface I1
-{
-  void Goo();
-}
-class C1 : I1
-{
-  void I1.Goo() { }
-}";
+                """
+                interface I1
+                {
+                  void Goo();
+                }
+                class C1 : I1
+                {
+                  void I1.Goo() { }
+                }
+                """;
 
             await TestAsync(text, "Goo", "C1.Goo()");
             await TestAsync(text, "I1.Goo");
diff --git a/src/EditorFeatures/CSharpTest/DecompiledSource/DecompiledSourceFormattingTests.cs b/src/EditorFeatures/CSharpTest/DecompiledSource/DecompiledSourceFormattingTests.cs
index 94dfb974a118d..76ce54129458e 100644
--- a/src/EditorFeatures/CSharpTest/DecompiledSource/DecompiledSourceFormattingTests.cs
+++ b/src/EditorFeatures/CSharpTest/DecompiledSource/DecompiledSourceFormattingTests.cs
@@ -24,203 +24,231 @@ public class DecompiledSourceFormattingTests
         public async Task TestIfFormatting1()
         {
             await TestAsync(
-@"class C {
-  void M() {
-    if (true) {
-    }
-  }
-}",
-@"class C
-{
-    void M()
-    {
-        if (true)
-        {
-        }
-    }
-}");
+                """
+                class C {
+                  void M() {
+                    if (true) {
+                    }
+                  }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (true)
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfFormatting2()
         {
             await TestAsync(
-@"class C {
-  void M() {
-    if (true) {
-    }
-    return;
-  }
-}",
-@"class C
-{
-    void M()
-    {
-        if (true)
-        {
-        }
+                """
+                class C {
+                  void M() {
+                    if (true) {
+                    }
+                    return;
+                  }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (true)
+                        {
+                        }
 
-        return;
-    }
-}");
+                        return;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfFormatting3()
         {
             await TestAsync(
-@"class C {
-  void M() {
-    if (true) {
-    } else {
-    return;
-}
-  }
-}",
-@"class C
-{
-    void M()
-    {
-        if (true)
-        {
-        }
-        else
-        {
-            return;
-        }
-    }
-}");
+                """
+                class C {
+                  void M() {
+                    if (true) {
+                    } else {
+                    return;
+                }
+                  }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (true)
+                        {
+                        }
+                        else
+                        {
+                            return;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestTryCatchFinally()
         {
             await TestAsync(
-@"class C {
-  void M() {
-    try {
-    } catch {
-    } finally {
-    }
-  }
-}",
-@"class C
-{
-    void M()
-    {
-        try
-        {
-        }
-        catch
-        {
-        }
-        finally
-        {
-        }
-    }
-}");
+                """
+                class C {
+                  void M() {
+                    try {
+                    } catch {
+                    } finally {
+                    }
+                  }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        try
+                        {
+                        }
+                        catch
+                        {
+                        }
+                        finally
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDoWhile()
         {
             await TestAsync(
-@"class C {
-  void M() {
-    do {
-    } while(true);
-  }
-}",
-@"class C
-{
-    void M()
-    {
-        do
-        {
-        } while (true);
-    }
-}");
+                """
+                class C {
+                  void M() {
+                    do {
+                    } while(true);
+                  }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        do
+                        {
+                        } while (true);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedIf()
         {
             await TestAsync(
-@"class C {
-  void M() {
-    if (true) {
-        if (true) {
-        }
-    }
-  }
-}",
-@"class C
-{
-    void M()
-    {
-        if (true)
-        {
-            if (true)
-            {
-            }
-        }
-    }
-}");
+                """
+                class C {
+                  void M() {
+                    if (true) {
+                        if (true) {
+                        }
+                    }
+                  }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (true)
+                        {
+                            if (true)
+                            {
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestBraces()
         {
             await TestAsync(
-@"class C {
-  void M() {
-    if (true) {
-    }
-    while (true) {
-    }
-    switch (true) {
-    }
-    try {
-    } finally {
-    }
-    using (null) {
-    }
-    foreach (var x in y) {
-    }
-  }
-}",
-@"class C
-{
-    void M()
-    {
-        if (true)
-        {
-        }
+                """
+                class C {
+                  void M() {
+                    if (true) {
+                    }
+                    while (true) {
+                    }
+                    switch (true) {
+                    }
+                    try {
+                    } finally {
+                    }
+                    using (null) {
+                    }
+                    foreach (var x in y) {
+                    }
+                  }
+                }
+                """,
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (true)
+                        {
+                        }
 
-        while (true)
-        {
-        }
+                        while (true)
+                        {
+                        }
 
-        switch (true)
-        {
-        }
+                        switch (true)
+                        {
+                        }
 
-        try
-        {
-        }
-        finally
-        {
-        }
+                        try
+                        {
+                        }
+                        finally
+                        {
+                        }
 
-        using (null)
-        {
-        }
+                        using (null)
+                        {
+                        }
 
-        foreach (var x in y)
-        {
-        }
-    }
-}");
+                        foreach (var x in y)
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         private static async Task TestAsync(string input, string expected)
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/AbstractCSharpDiagnosticProviderBasedUserDiagnosticTest.cs b/src/EditorFeatures/CSharpTest/Diagnostics/AbstractCSharpDiagnosticProviderBasedUserDiagnosticTest.cs
index c1fec49b3cfa8..0c6e242d2d0e4 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/AbstractCSharpDiagnosticProviderBasedUserDiagnosticTest.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/AbstractCSharpDiagnosticProviderBasedUserDiagnosticTest.cs
@@ -24,128 +24,129 @@ protected AbstractCSharpDiagnosticProviderBasedUserDiagnosticTest(ITestOutputHel
 
         protected internal override string GetLanguage() => LanguageNames.CSharp;
 
-        protected const string IAsyncEnumerable = @"
-namespace System
-{
-    public interface IAsyncDisposable
-    {
-        System.Threading.Tasks.ValueTask DisposeAsync();
-    }
-}
-
-namespace System.Runtime.CompilerServices
-{
-    using System.Threading.Tasks;
-
-    public sealed class AsyncMethodBuilderAttribute : Attribute
-    {
-        public AsyncMethodBuilderAttribute(Type builderType) { }
-        public Type BuilderType { get; }
-    }
-
-    public struct AsyncValueTaskMethodBuilder
-    {
-        public ValueTask Task => default;
-
-        public static AsyncValueTaskMethodBuilder Create() => default;
-        public void AwaitOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
-            where TAwaiter : INotifyCompletion
-            where TStateMachine : IAsyncStateMachine {}
-
-        public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
-            where TAwaiter : ICriticalNotifyCompletion
-            where TStateMachine : IAsyncStateMachine {}
-        public void SetException(Exception exception) {}
-        public void SetResult() {}
-        public void SetStateMachine(IAsyncStateMachine stateMachine) {}
-        public void Start<TStateMachine>(ref TStateMachine stateMachine) where TStateMachine : IAsyncStateMachine {}
-    }
-
-    public readonly struct ValueTaskAwaiter : ICriticalNotifyCompletion, INotifyCompletion
-    {
-        public bool IsCompleted => default;
-
-        public void GetResult() { }
-        public void OnCompleted(Action continuation) { }
-        public void UnsafeOnCompleted(Action continuation) { }
-    }
-
-    public readonly struct ValueTaskAwaiter<TResult> : ICriticalNotifyCompletion, INotifyCompletion
-    {
-        public bool IsCompleted => default;
-        public TResult GetResult() => default;
-        public void OnCompleted(Action continuation) { }
-        public void UnsafeOnCompleted(Action continuation) { }
-    }
-}
-
-namespace System.Threading.Tasks
-{
-    using System.Runtime.CompilerServices;
-
-    [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder))]
-    public readonly struct ValueTask : IEquatable<ValueTask>
-    {
-        public ValueTask(Task task) {}
-        public ValueTask(IValueTaskSource source, short token) {}
-
-        public bool IsCompleted => default;
-        public bool IsCompletedSuccessfully => default;
-        public bool IsFaulted => default;
-        public bool IsCanceled => default;
-
-        public Task AsTask() => default;
-        public ConfiguredValueTaskAwaitable ConfigureAwait(bool continueOnCapturedContext) => default;
-        public override bool Equals(object obj) => default;
-        public bool Equals(ValueTask other) => default;
-        public ValueTaskAwaiter GetAwaiter() => default;
-        public override int GetHashCode() => default;
-        public ValueTask Preserve() => default;
-
-        public static bool operator ==(ValueTask left, ValueTask right) => default;
-        public static bool operator !=(ValueTask left, ValueTask right) => default;
-    }
-
-    [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder<>))]
-    public readonly struct ValueTask<TResult> : IEquatable<ValueTask<TResult>>
-    {
-        public ValueTask(TResult result) {}
-        public ValueTask(Task<TResult> task) {}
-        public ValueTask(IValueTaskSource<TResult> source, short token) {}
-
-        public bool IsFaulted => default;
-        public bool IsCompletedSuccessfully => default;
-        public bool IsCompleted => default;
-        public bool IsCanceled => default;
-        public TResult Result => default;
-
-        public Task<TResult> AsTask() => default;
-        public ConfiguredValueTaskAwaitable<TResult> ConfigureAwait(bool continueOnCapturedContext) => default;
-
-        public bool Equals(ValueTask<TResult> other) => default;
-        public override bool Equals(object obj) => default;
-        public ValueTaskAwaiter<TResult> GetAwaiter() => default;
-        public override int GetHashCode() => default;
-        public ValueTask<TResult> Preserve() => default;
-        public override string ToString() => default;
-        public static bool operator ==(ValueTask<TResult> left, ValueTask<TResult> right) => default;
-        public static bool operator !=(ValueTask<TResult> left, ValueTask<TResult> right) => default;
-    }
-}
-
-namespace System.Collections.Generic
-{
-    public interface IAsyncEnumerable<out T>
-    {
-        IAsyncEnumerator<T> GetAsyncEnumerator();
-    }
-
-    public interface IAsyncEnumerator<out T> : IAsyncDisposable
-    {
-        System.Threading.Tasks.ValueTask<bool> MoveNextAsync();
-        T Current { get; }
-    }
-}";
+        protected const string IAsyncEnumerable = """
+            namespace System
+            {
+                public interface IAsyncDisposable
+                {
+                    System.Threading.Tasks.ValueTask DisposeAsync();
+                }
+            }
+
+            namespace System.Runtime.CompilerServices
+            {
+                using System.Threading.Tasks;
+
+                public sealed class AsyncMethodBuilderAttribute : Attribute
+                {
+                    public AsyncMethodBuilderAttribute(Type builderType) { }
+                    public Type BuilderType { get; }
+                }
+
+                public struct AsyncValueTaskMethodBuilder
+                {
+                    public ValueTask Task => default;
+
+                    public static AsyncValueTaskMethodBuilder Create() => default;
+                    public void AwaitOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
+                        where TAwaiter : INotifyCompletion
+                        where TStateMachine : IAsyncStateMachine {}
+
+                    public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(ref TAwaiter awaiter, ref TStateMachine stateMachine)
+                        where TAwaiter : ICriticalNotifyCompletion
+                        where TStateMachine : IAsyncStateMachine {}
+                    public void SetException(Exception exception) {}
+                    public void SetResult() {}
+                    public void SetStateMachine(IAsyncStateMachine stateMachine) {}
+                    public void Start<TStateMachine>(ref TStateMachine stateMachine) where TStateMachine : IAsyncStateMachine {}
+                }
+
+                public readonly struct ValueTaskAwaiter : ICriticalNotifyCompletion, INotifyCompletion
+                {
+                    public bool IsCompleted => default;
+
+                    public void GetResult() { }
+                    public void OnCompleted(Action continuation) { }
+                    public void UnsafeOnCompleted(Action continuation) { }
+                }
+
+                public readonly struct ValueTaskAwaiter<TResult> : ICriticalNotifyCompletion, INotifyCompletion
+                {
+                    public bool IsCompleted => default;
+                    public TResult GetResult() => default;
+                    public void OnCompleted(Action continuation) { }
+                    public void UnsafeOnCompleted(Action continuation) { }
+                }
+            }
+
+            namespace System.Threading.Tasks
+            {
+                using System.Runtime.CompilerServices;
+
+                [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder))]
+                public readonly struct ValueTask : IEquatable<ValueTask>
+                {
+                    public ValueTask(Task task) {}
+                    public ValueTask(IValueTaskSource source, short token) {}
+
+                    public bool IsCompleted => default;
+                    public bool IsCompletedSuccessfully => default;
+                    public bool IsFaulted => default;
+                    public bool IsCanceled => default;
+
+                    public Task AsTask() => default;
+                    public ConfiguredValueTaskAwaitable ConfigureAwait(bool continueOnCapturedContext) => default;
+                    public override bool Equals(object obj) => default;
+                    public bool Equals(ValueTask other) => default;
+                    public ValueTaskAwaiter GetAwaiter() => default;
+                    public override int GetHashCode() => default;
+                    public ValueTask Preserve() => default;
+
+                    public static bool operator ==(ValueTask left, ValueTask right) => default;
+                    public static bool operator !=(ValueTask left, ValueTask right) => default;
+                }
+
+                [AsyncMethodBuilder(typeof(AsyncValueTaskMethodBuilder<>))]
+                public readonly struct ValueTask<TResult> : IEquatable<ValueTask<TResult>>
+                {
+                    public ValueTask(TResult result) {}
+                    public ValueTask(Task<TResult> task) {}
+                    public ValueTask(IValueTaskSource<TResult> source, short token) {}
+
+                    public bool IsFaulted => default;
+                    public bool IsCompletedSuccessfully => default;
+                    public bool IsCompleted => default;
+                    public bool IsCanceled => default;
+                    public TResult Result => default;
+
+                    public Task<TResult> AsTask() => default;
+                    public ConfiguredValueTaskAwaitable<TResult> ConfigureAwait(bool continueOnCapturedContext) => default;
+
+                    public bool Equals(ValueTask<TResult> other) => default;
+                    public override bool Equals(object obj) => default;
+                    public ValueTaskAwaiter<TResult> GetAwaiter() => default;
+                    public override int GetHashCode() => default;
+                    public ValueTask<TResult> Preserve() => default;
+                    public override string ToString() => default;
+                    public static bool operator ==(ValueTask<TResult> left, ValueTask<TResult> right) => default;
+                    public static bool operator !=(ValueTask<TResult> left, ValueTask<TResult> right) => default;
+                }
+            }
+
+            namespace System.Collections.Generic
+            {
+                public interface IAsyncEnumerable<out T>
+                {
+                    IAsyncEnumerator<T> GetAsyncEnumerator();
+                }
+
+                public interface IAsyncEnumerator<out T> : IAsyncDisposable
+                {
+                    System.Threading.Tasks.ValueTask<bool> MoveNextAsync();
+                    T Current { get; }
+                }
+            }
+            """;
 
         internal OptionsCollection RequireArithmeticBinaryParenthesesForClarity => ParenthesesOptionsProvider.RequireArithmeticBinaryParenthesesForClarity;
         internal OptionsCollection RequireRelationalBinaryParenthesesForClarity => ParenthesesOptionsProvider.RequireRelationalBinaryParenthesesForClarity;
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/BooleanCodeStyleOptionConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/BooleanCodeStyleOptionConfigurationTests.cs
index cdd3ddfd7ac36..4a862994ecdc6 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/BooleanCodeStyleOptionConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/BooleanCodeStyleOptionConfigurationTests.cs
@@ -38,71 +38,73 @@ public class TrueConfigurationTests : BooleanCodeStyleOptionConfigurationTests
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -110,71 +112,73 @@ public Customer()
             [Fact(Skip = "https://github.com/dotnet/roslyn/issues/39466")]
             public async Task ConfigureEditorconfig_RuleExists_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_style_object_initializer = false:suggestion    ; Comment2
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_style_object_initializer = true:suggestion    ; Comment2
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_style_object_initializer = false:suggestion    ; Comment2
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_style_object_initializer = true:suggestion    ; Comment2
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -182,76 +186,78 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_style_object_initializer = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_style_object_initializer = false:suggestion
-
-[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_style_object_initializer = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_style_object_initializer = false:suggestion
+
+                    [*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -259,71 +265,73 @@ public Customer()
             [Fact(Skip = "https://github.com/dotnet/roslyn/issues/39466")]
             public async Task ConfigureEditorconfig_MaintainSeverity_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_object_initializer = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_object_initializer = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_object_initializer = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_object_initializer = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -331,76 +339,78 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = false:suggestion
-dotnet_style_object_initializerr = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = false:suggestion
-dotnet_style_object_initializerr = false
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = false:suggestion
+                    dotnet_style_object_initializerr = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = false:suggestion
+                    dotnet_style_object_initializerr = false
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -414,71 +424,73 @@ public class FalseConfigurationTests : BooleanCodeStyleOptionConfigurationTests
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -486,71 +498,73 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -558,71 +572,73 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_False_NoSeveritySuffix()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -630,74 +646,76 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RuleExists_DotnetDiagnosticEntry()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -705,73 +723,75 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_ConflitingDotnetDiagnosticEntry()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = error
-dotnet_style_object_initializer = true:warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = error
-dotnet_style_object_initializer = false:warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = error
+                    dotnet_style_object_initializer = true:warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = error
+                    dotnet_style_object_initializer = false:warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -779,76 +799,78 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_style_object_initializer = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_style_object_initializer = true:suggestion
-
-[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_style_object_initializer = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_style_object_initializer = true:suggestion
+
+                    [*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -856,71 +878,73 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_MaintainSeverity_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_object_initializer = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_object_initializer = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_object_initializer = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_object_initializer = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -928,74 +952,76 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = false:suggestion
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = false:suggestion
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/EnumCodeStyleOptionConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/EnumCodeStyleOptionConfigurationTests.cs
index c27aa92281903..fcb96080aa4e8 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/EnumCodeStyleOptionConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/EnumCodeStyleOptionConfigurationTests.cs
@@ -51,47 +51,49 @@ public class UnusedLocalVariableConfigurationTests : EnumCodeStyleOptionConfigur
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_UnusedLocalVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = unused_local_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = unused_local_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -99,47 +101,49 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_UnusedLocalVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-csharp_style_unused_value_assignment_preference = discard_variable:suggestion    ; Comment2
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion    ; Comment2
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    csharp_style_unused_value_assignment_preference = discard_variable:suggestion    ; Comment2
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion    ; Comment2
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -147,50 +151,52 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RuleExists_DotnetDiagnosticEntry()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_diagnostic.IDE0059.severity = warning    ; Comment2
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_diagnostic.IDE0059.severity = warning    ; Comment2
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = unused_local_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_diagnostic.IDE0059.severity = warning    ; Comment2
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_diagnostic.IDE0059.severity = warning    ; Comment2
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = unused_local_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -198,49 +204,51 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RuleExists_ConflictingDotnetDiagnosticEntry()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_diagnostic.IDE0059.severity = error    ; Comment2
-csharp_style_unused_value_assignment_preference = discard_variable:suggestion    ; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_diagnostic.IDE0059.severity = error    ; Comment2
-csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion    ; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_diagnostic.IDE0059.severity = error    ; Comment2
+                    csharp_style_unused_value_assignment_preference = discard_variable:suggestion    ; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_diagnostic.IDE0059.severity = error    ; Comment2
+                    csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion    ; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -248,52 +256,54 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_UnusedLocalVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_unused_value_assignment_preference = discard_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_unused_value_assignment_preference = discard_variable:suggestion
-
-[*.cs]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = unused_local_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_unused_value_assignment_preference = discard_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_unused_value_assignment_preference = discard_variable:suggestion
+
+                    [*.cs]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = unused_local_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -301,47 +311,49 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_MaintainSeverity_UnusedLocalVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_unused_value_assignment_preference = discard_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_unused_value_assignment_preference = discard_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -349,50 +361,52 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_UnusedLocalVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preferencer = discard_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preferencer = discard_variable:suggestion
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = unused_local_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preferencer = discard_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preferencer = discard_variable:suggestion
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = unused_local_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -406,47 +420,49 @@ public class DiscardVariableConfigurationTests : EnumCodeStyleOptionConfiguratio
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_DiscardVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = discard_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = discard_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -454,47 +470,49 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_DiscardVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preference = discard_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preference = discard_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -502,47 +520,49 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_DiscardVariable_WithoutSeveritySuffix()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preference = unused_local_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preference = discard_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preference = unused_local_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preference = discard_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -550,52 +570,54 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_DiscardVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
-
-[*.cs]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = discard_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
+
+                    [*.cs]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = discard_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -603,47 +625,49 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_MaintainSeverity_DiscardVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_unused_value_assignment_preference = discard_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_unused_value_assignment_preference = unused_local_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_unused_value_assignment_preference = discard_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -651,50 +675,52 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_DiscardVariable()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        [|var obj = new Program1();|]
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preference_error = discard_variable:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
-        var obj = new Program1();
-        obj = null;
-        var obj2 = obj;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_unused_value_assignment_preference_error = discard_variable:suggestion
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = discard_variable
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            [|var obj = new Program1();|]
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preference_error = discard_variable:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // csharp_style_unused_value_assignment_preference = { discard_variable, unused_local_variable }
+                            var obj = new Program1();
+                            obj = null;
+                            var obj2 = obj;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_unused_value_assignment_preference_error = discard_variable:suggestion
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = discard_variable
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/MultipleCodeStyleOptionConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/MultipleCodeStyleOptionConfigurationTests.cs
index e791d5118e320..ba197eb169117 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/MultipleCodeStyleOptionConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureCodeStyle/MultipleCodeStyleOptionConfigurationTests.cs
@@ -56,43 +56,45 @@ public class VarElsewhere_TrueConfigurationTests : MultipleCodeStyleOptionConfig
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# IDE0008: Use explicit type
-csharp_style_var_elsewhere = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # IDE0008: Use explicit type
+                    csharp_style_var_elsewhere = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -100,45 +102,47 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-csharp_style_var_elsewhere = false:suggestion    ; Comment2
-csharp_style_var_for_built_in_types = true:suggestion    ; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-csharp_style_var_elsewhere = true:suggestion    ; Comment2
-csharp_style_var_for_built_in_types = true:suggestion    ; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    csharp_style_var_elsewhere = false:suggestion    ; Comment2
+                    csharp_style_var_for_built_in_types = true:suggestion    ; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    csharp_style_var_elsewhere = true:suggestion    ; Comment2
+                    csharp_style_var_for_built_in_types = true:suggestion    ; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -146,45 +150,47 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_True_WithoutSeveritySuffix()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-csharp_style_var_elsewhere = false    ; Comment2
-csharp_style_var_for_built_in_types = true    ; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-csharp_style_var_elsewhere = true    ; Comment2
-csharp_style_var_for_built_in_types = true    ; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    csharp_style_var_elsewhere = false    ; Comment2
+                    csharp_style_var_for_built_in_types = true    ; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    csharp_style_var_elsewhere = true    ; Comment2
+                    csharp_style_var_for_built_in_types = true    ; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -192,48 +198,50 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_var_elsewhere = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_var_elsewhere = false:suggestion
-
-[*.cs]
-
-# IDE0008: Use explicit type
-csharp_style_var_elsewhere = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_var_elsewhere = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_var_elsewhere = false:suggestion
+
+                    [*.cs]
+
+                    # IDE0008: Use explicit type
+                    csharp_style_var_elsewhere = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -241,43 +249,45 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_MaintainSeverity_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_var_elsewhere = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_var_elsewhere = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_var_elsewhere = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_var_elsewhere = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -285,46 +295,48 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_True()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_when_type_is_apparent_error = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_when_type_is_apparent_error = false:suggestion
-
-# IDE0008: Use explicit type
-csharp_style_var_elsewhere = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_when_type_is_apparent_error = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_when_type_is_apparent_error = false:suggestion
+
+                    # IDE0008: Use explicit type
+                    csharp_style_var_elsewhere = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -340,43 +352,45 @@ public class VarForBuiltInTypes_FalseConfigurationTests : MultipleCodeStyleOptio
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# IDE0008: Use explicit type
-csharp_style_var_for_built_in_types = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # IDE0008: Use explicit type
+                    csharp_style_var_for_built_in_types = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -384,43 +398,45 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_for_built_in_types = true:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_for_built_in_types = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_for_built_in_types = true:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_for_built_in_types = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -428,43 +444,45 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_False_WithoutSeveritySuffix()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_for_built_in_types = true
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_for_built_in_types = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_for_built_in_types = true
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_for_built_in_types = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -472,48 +490,50 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_var_for_built_in_types = true:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-csharp_style_var_for_built_in_types = true:silent
-
-[*.cs]
-
-# IDE0008: Use explicit type
-csharp_style_var_for_built_in_types = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_var_for_built_in_types = true:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    csharp_style_var_for_built_in_types = true:silent
+
+                    [*.cs]
+
+                    # IDE0008: Use explicit type
+                    csharp_style_var_for_built_in_types = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -521,43 +541,45 @@ static void Main()
             [Fact]
             public async Task ConfigureEditorconfig_MaintainSeverity_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_var_for_built_in_types = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-csharp_style_var_for_built_in_types = false:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_var_for_built_in_types = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    csharp_style_var_for_built_in_types = false:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -565,46 +587,48 @@ static void Main()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_False()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        [|var obj = new Program1();|]
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_for_built_in_types_error = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
-        var obj = new Program1();
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_var_for_built_in_types_error = false:silent
-
-# IDE0008: Use explicit type
-csharp_style_var_for_built_in_types = false
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            [|var obj = new Program1();|]
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_for_built_in_types_error = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // { csharp_style_var_when_type_is_apparent, csharp_style_var_for_built_in_types, csharp_style_var_elsewhere }
+                            var obj = new Program1();
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_var_for_built_in_types_error = false:silent
+
+                    # IDE0008: Use explicit type
+                    csharp_style_var_for_built_in_types = false
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/AllAnalyzersSeverityConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/AllAnalyzersSeverityConfigurationTests.cs
index 06ea38d95c237..4566de9c51b54 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/AllAnalyzersSeverityConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/AllAnalyzersSeverityConfigurationTests.cs
@@ -65,29 +65,31 @@ public sealed class SilentConfigurationTests : AllAnalyzersSeverityConfiguration
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -95,29 +97,31 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_analyzer_diagnostic.severity = suggestion   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_analyzer_diagnostic.severity = silent   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_analyzer_diagnostic.severity = suggestion   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_analyzer_diagnostic.severity = silent   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -125,34 +129,36 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_RuleIdEntryExists()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment1
-dotnet_diagnostic.category-CustomCategory.severity = warning   # Comment2
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment1
-dotnet_diagnostic.category-CustomCategory.severity = warning   # Comment2
-
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment1
+                    dotnet_diagnostic.category-CustomCategory.severity = warning   # Comment2
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment1
+                    dotnet_diagnostic.category-CustomCategory.severity = warning   # Comment2
+
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -160,34 +166,36 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_analyzer_diagnostic.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_analyzer_diagnostic.severity = suggestion
-
-[*.cs]
-
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_analyzer_diagnostic.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_analyzer_diagnostic.severity = suggestion
+
+                    [*.cs]
+
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -195,17 +203,18 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_MaintainExistingEntry()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, input, CodeActionIndex);
             }
@@ -213,17 +222,18 @@ public async Task ConfigureEditorconfig_MaintainExistingEntry()
             [Fact]
             public async Task ConfigureEditorconfig_DiagnosticsSuppressed()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestMissingInRegularAndScriptAsync(input);
             }
@@ -231,32 +241,34 @@ public async Task ConfigureEditorconfig_DiagnosticsSuppressed()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.XYZ1111.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.XYZ1111.severity = suggestion
-
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.XYZ1111.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.XYZ1111.severity = suggestion
+
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -266,36 +278,38 @@ public async Task ConfigureEditorconfig_RegexHeaderMatch()
             {
                 // NOTE: Even though we have a regex match, bulk configuration code fix is always applied to all files
                 // within the editorconfig cone, so it generates a new entry.
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\Program/file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fi*e.cs]
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\Program/file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fi*e.cs]
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = warning
-
-[*.cs]
-
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\Program/file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fi*e.cs]
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\Program/file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fi*e.cs]
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = warning
+
+                    [*.cs]
+
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -303,36 +317,38 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RegexHeaderNonMatch()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\Program/file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fii*e.cs]
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\Program/file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fii*e.cs]
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = warning
-
-[*.cs]
-
-# Default severity for all analyzer diagnostics
-dotnet_analyzer_diagnostic.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\Program/file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fii*e.cs]
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\Program/file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fii*e.cs]
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = warning
+
+                    [*.cs]
+
+                    # Default severity for all analyzer diagnostics
+                    dotnet_analyzer_diagnostic.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CSharpCodeStyleOptionBasedSeverityConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CSharpCodeStyleOptionBasedSeverityConfigurationTests.cs
index 506540aaeb7ec..59bcee32a22c8 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CSharpCodeStyleOptionBasedSeverityConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CSharpCodeStyleOptionBasedSeverityConfigurationTests.cs
@@ -37,48 +37,50 @@ public class ErrorConfigurationTests : CSharpCodeStyleOptionBasedSeverityConfigu
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# IDE0059: Unnecessary assignment of a value
-dotnet_diagnostic.IDE0059.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    dotnet_diagnostic.IDE0059.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -86,53 +88,55 @@ public int Test()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_ExistingRule_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = discard_variable:warning
-dotnet_diagnostic.IDE0059.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = discard_variable:error
-dotnet_diagnostic.IDE0059.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = discard_variable:warning
+                    dotnet_diagnostic.IDE0059.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = discard_variable:error
+                    dotnet_diagnostic.IDE0059.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -140,53 +144,55 @@ public int Test()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_ExistingRuleDotNetHeader_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = discard_variable:warning
-dotnet_diagnostic.IDE0059.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-
-# IDE0059: Unnecessary assignment of a value
-csharp_style_unused_value_assignment_preference = discard_variable:error
-dotnet_diagnostic.IDE0059.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = discard_variable:warning
+                    dotnet_diagnostic.IDE0059.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+
+                    # IDE0059: Unnecessary assignment of a value
+                    csharp_style_unused_value_assignment_preference = discard_variable:error
+                    dotnet_diagnostic.IDE0059.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -194,56 +200,58 @@ public int Test()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_ChooseBestHeader_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-
-[*.{vb,cs}]
-dotnet_style_qualification_for_field = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-
-# IDE0059: Unnecessary assignment of a value
-dotnet_diagnostic.IDE0059.severity = error
-
-[*.{vb,cs}]
-dotnet_style_qualification_for_field = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+
+                    [*.{vb,cs}]
+                    dotnet_style_qualification_for_field = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+
+                    # IDE0059: Unnecessary assignment of a value
+                    dotnet_diagnostic.IDE0059.severity = error
+
+                    [*.{vb,cs}]
+                    dotnet_style_qualification_for_field = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -251,56 +259,58 @@ public int Test()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_ChooseBestHeaderReversed_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_qualification_for_field = false:silent
-
-[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-public class Class1
-{
-    public int Test()
-    {
-        var o = 1;
-        // csharp_style_unused_value_assignment_preference = discard_variable
-        var [|unused|] = o;
-        return 1;
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_qualification_for_field = false:silent
-
-[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-
-# IDE0059: Unnecessary assignment of a value
-dotnet_diagnostic.IDE0059.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_qualification_for_field = false:silent
+
+                    [*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    public class Class1
+                    {
+                        public int Test()
+                        {
+                            var o = 1;
+                            // csharp_style_unused_value_assignment_preference = discard_variable
+                            var [|unused|] = o;
+                            return 1;
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_qualification_for_field = false:silent
+
+                    [*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+
+                    # IDE0059: Unnecessary assignment of a value
+                    dotnet_diagnostic.IDE0059.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CategoryBasedSeverityConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CategoryBasedSeverityConfigurationTests.cs
index e2dc58a6de683..aec1441474d4c 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CategoryBasedSeverityConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CategoryBasedSeverityConfigurationTests.cs
@@ -65,29 +65,31 @@ public sealed class SilentConfigurationTests : CategoryBasedSeverityConfiguratio
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -95,29 +97,31 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = suggestion   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = suggestion   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -125,32 +129,34 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_RuleIdEntryExists()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
-
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
+
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -158,34 +164,36 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = suggestion
-
-[*.cs]
-
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = suggestion
+
+                    [*.cs]
+
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -193,17 +201,18 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_MaintainExistingEntry()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, input, CodeActionIndex);
             }
@@ -211,17 +220,18 @@ public async Task ConfigureEditorconfig_MaintainExistingEntry()
             [Fact]
             public async Task ConfigureEditorconfig_DiagnosticsSuppressed()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestMissingInRegularAndScriptAsync(input);
             }
@@ -229,32 +239,34 @@ public async Task ConfigureEditorconfig_DiagnosticsSuppressed()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.category-XYZ1111Category.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_analyzer_diagnostic.category-XYZ1111Category.severity = suggestion
-
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.category-XYZ1111Category.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_analyzer_diagnostic.category-XYZ1111Category.severity = suggestion
+
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -264,36 +276,38 @@ public async Task ConfigureEditorconfig_RegexHeaderMatch()
             {
                 // NOTE: Even though we have a regex match, bulk configuration code fix is always applied to all files
                 // within the editorconfig cone, so it generates a new entry.
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\Program/file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fi*e.cs]
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\Program/file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fi*e.cs]
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
-
-[*.cs]
-
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\Program/file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fi*e.cs]
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\Program/file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fi*e.cs]
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
+
+                    [*.cs]
+
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -301,36 +315,38 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RegexHeaderNonMatch()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-        <Document FilePath=""z:\\Program/file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fii*e.cs]
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"" FilePath=""z:\\Assembly1.csproj"">
-         <Document FilePath=""z:\\Program/file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fii*e.cs]
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
-
-[*.cs]
-
-# Default severity for analyzer diagnostics with category 'CustomCategory'
-dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                            <Document FilePath="z:\\Program/file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fii*e.cs]
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true" FilePath="z:\\Assembly1.csproj">
+                             <Document FilePath="z:\\Program/file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fii*e.cs]
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = warning
+
+                    [*.cs]
+
+                    # Default severity for analyzer diagnostics with category 'CustomCategory'
+                    dotnet_analyzer_diagnostic.category-CustomCategory.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CodeStyleOptionBasedSeverityConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CodeStyleOptionBasedSeverityConfigurationTests.cs
index 976decdb7a9e3..00dbb723103d6 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CodeStyleOptionBasedSeverityConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/CodeStyleOptionBasedSeverityConfigurationTests.cs
@@ -37,71 +37,73 @@ public class NoneConfigurationTests : CodeStyleOptionBasedSeverityConfigurationT
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -109,73 +111,75 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_style_object_initializer = true:suggestion    ; Comment2
-dotnet_diagnostic.IDE0017.severity = suggestion    ;; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]    # Comment1
-dotnet_style_object_initializer = true:none    ; Comment2
-dotnet_diagnostic.IDE0017.severity = none    ;; Comment3
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_style_object_initializer = true:suggestion    ; Comment2
+                    dotnet_diagnostic.IDE0017.severity = suggestion    ;; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]    # Comment1
+                    dotnet_style_object_initializer = true:none    ; Comment2
+                    dotnet_diagnostic.IDE0017.severity = none    ;; Comment3
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -183,76 +187,78 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_diagnostic.IDE0017.severity = suggestion
-
-[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+
+                    [*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -260,73 +266,75 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_MaintainOption_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_object_initializer = true:suggestion
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_style_object_initializer = true:none
-dotnet_diagnostic.IDE0017.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_object_initializer = true:suggestion
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_style_object_initializer = true:none
+                    dotnet_diagnostic.IDE0017.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -334,76 +342,78 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = true:suggestion
-dotnet_diagnostic.IDE0017.severityyy = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = true:suggestion
-dotnet_diagnostic.IDE0017.severityyy = suggestion
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = true:suggestion
+                    dotnet_diagnostic.IDE0017.severityyy = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = true:suggestion
+                    dotnet_diagnostic.IDE0017.severityyy = suggestion
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -417,71 +427,73 @@ public class SilentConfigurationTests : CodeStyleOptionBasedSeverityConfiguratio
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_Silent()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -489,71 +501,73 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_Silent()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -567,71 +581,73 @@ public class SuggestionConfigurationTests : CodeStyleOptionBasedSeverityConfigur
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_Suggestion()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -639,73 +655,75 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_Suggestion()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:suggestion
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:suggestion
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -719,221 +737,227 @@ public class WarningConfigurationTests : CodeStyleOptionBasedSeverityConfigurati
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_Warning()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-        public Customer()
-        {
+            [Fact]
+            public async Task ConfigureEditorconfig_RuleExists_Warning()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
         }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
 
-        public Customer()
+        [Trait(Traits.Feature, Traits.Features.CodeActionsConfiguration)]
+        public class ErrorConfigurationTests : CodeStyleOptionBasedSeverityConfigurationTests
         {
+            protected override int CodeActionIndex => 4;
 
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [Fact]
-            public async Task ConfigureEditorconfig_RuleExists_Warning()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-        }
-
-        [Trait(Traits.Feature, Traits.Features.CodeActionsConfiguration)]
-        public class ErrorConfigurationTests : CodeStyleOptionBasedSeverityConfigurationTests
-        {
-            protected override int CodeActionIndex => 4;
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_Empty_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_Empty_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -941,74 +965,76 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RuleExists_CodeStyleBased_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:error
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:error
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -1016,827 +1042,849 @@ public Customer()
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_SeverityBased_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [Fact]
-            public async Task ConfigureEditorconfig_RuleExists_CodeStyleAndSeverityBased_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:suggestion
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = new Customer();
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_InvalidHeader_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_diagnostic.IDE0017.severity = suggestion
-
-[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_InvalidRule_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = true:warning
-dotnet_diagnostic.IDE0017.severityyy = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializerr = true:warning
-dotnet_diagnostic.IDE0017.severityyy = suggestion
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_ConcreteHeader_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_NestedDirectory_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_NestedDirectoryNestedHeader_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[ParentFolder/File.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[ParentFolder/File.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_NestedDirectoryIncorrectHeader_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[ParentFolderr/File.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[ParentFolderr/File.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = warning
-
-[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
-            }
-
-            [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_IncorrectExtension_Error()
-            {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.vb]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.vb]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-
-[*.{cs,vb}]
+            }
 
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+            [Fact]
+            public async Task ConfigureEditorconfig_RuleExists_CodeStyleAndSeverityBased_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:suggestion
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = new Customer();
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
 
             [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_HeaderRegex_Error()
+            public async Task ConfigureEditorconfig_InvalidHeader_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+
+                    [*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[Parent*r/Fil*.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_InvalidRule_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = true:warning
+                    dotnet_diagnostic.IDE0017.severityyy = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializerr = true:warning
+                    dotnet_diagnostic.IDE0017.severityyy = suggestion
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-    internal class Customer
-    {
-        public int _age;
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_ConcreteHeader_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        public Customer()
-        {
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[Parent*r/Fil*.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_NestedDirectory_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
 
             [ConditionalFact(typeof(IsEnglishLocal))]
-            public async Task ConfigureEditorconfig_HeaderAllFiles_Error()
+            public async Task ConfigureEditorconfig_NestedDirectoryNestedHeader_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[ParentFolder/File.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[ParentFolder/File.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-    internal class Customer
-    {
-        public int _age;
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_NestedDirectoryIncorrectHeader_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[ParentFolderr/File.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[ParentFolderr/File.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        public Customer()
-        {
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_IncorrectExtension_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.vb]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.vb]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-    internal class Customer
-    {
-        public int _age;
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_HeaderRegex_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[Parent*r/Fil*.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[Parent*r/Fil*.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
-        public Customer()
-        {
+                await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
+            }
 
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+            [ConditionalFact(typeof(IsEnglishLocal))]
+            public async Task ConfigureEditorconfig_HeaderAllFiles_Error()
+            {
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -1844,103 +1892,105 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_MultipleHeaders_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.vb]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[File.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-
-[cs.vb]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[test.test]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[WrongName.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[WrongName2.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/File.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[File.vb]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[File.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-
-[cs.vb]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[test.test]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[WrongName.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[WrongName2.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.vb]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [File.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [cs.vb]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [test.test]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [WrongName.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [WrongName2.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/File.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[File.vb]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [File.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+
+                    [cs.vb]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [test.test]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [WrongName.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [WrongName2.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -1948,76 +1998,78 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RegexPartialMatch_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[gram.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\ParentFolder/Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[gram.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-
-[*.{cs,vb}]
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[gram.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\ParentFolder/Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[gram.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [*.{cs,vb}]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -2025,71 +2077,73 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_VerifyCaseInsensitive_Warning()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\PARENTfoldeR/ProGRAM.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[PROgram.cs]
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\PARENTfoldeR/ProGRAM.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[PROgram.cs]
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\PARENTfoldeR/ProGRAM.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[PROgram.cs]
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\PARENTfoldeR/ProGRAM.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[PROgram.cs]
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -2097,81 +2151,83 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_DuplicateRule_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-
-[Program.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-
-[Program.cs]
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [Program.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+
+                    [Program.cs]
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -2179,80 +2235,82 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_ChooseBestHeader_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-dotnet_style_qualification_for_field = false:silent
-
-[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-dotnet_style_qualification_for_field = false:silent
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-
-[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+                    dotnet_style_qualification_for_field = false:silent
+
+                    [*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+                    dotnet_style_qualification_for_field = false:silent
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+
+                    [*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -2260,80 +2318,82 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_ChooseBestHeaderReversed_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-
-[*.{cs,vb}]
-dotnet_style_qualification_for_field = false:silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-csharp_style_expression_bodied_methods = false:silent
-
-[*.{cs,vb}]
-dotnet_style_qualification_for_field = false:silent
-
-# IDE0017: Simplify object initialization
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+
+                    [*.{cs,vb}]
+                    dotnet_style_qualification_for_field = false:silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    csharp_style_expression_bodied_methods = false:silent
+
+                    [*.{cs,vb}]
+                    dotnet_style_qualification_for_field = false:silent
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -2341,77 +2401,79 @@ public Customer()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_DotFileName_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program/Test.file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[Test.file.cs]
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = true:warning
-dotnet_diagnostic.IDE0017.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program/Test.file.cs"">
-class Program1
-{
-    static void Main()
-    {
-        // dotnet_style_object_initializer = true
-        var obj = new Customer() { _age = 21 };
-
-        // dotnet_style_object_initializer = false
-        Customer obj2 = [|new Customer()|];
-        obj2._age = 21;
-    }
-
-    internal class Customer
-    {
-        public int _age;
-
-        public Customer()
-        {
-
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[Test.file.cs]
-
-# IDE0017: Simplify object initialization
-dotnet_style_object_initializer = true:error
-dotnet_diagnostic.IDE0017.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program/Test.file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[Test.file.cs]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = true:warning
+                    dotnet_diagnostic.IDE0017.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program/Test.file.cs">
+                    class Program1
+                    {
+                        static void Main()
+                        {
+                            // dotnet_style_object_initializer = true
+                            var obj = new Customer() { _age = 21 };
+
+                            // dotnet_style_object_initializer = false
+                            Customer obj2 = [|new Customer()|];
+                            obj2._age = 21;
+                        }
+
+                        internal class Customer
+                        {
+                            public int _age;
+
+                            public Customer()
+                            {
+
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[Test.file.cs]
+
+                    # IDE0017: Simplify object initialization
+                    dotnet_style_object_initializer = true:error
+                    dotnet_diagnostic.IDE0017.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/DotNetDiagnosticSeverityBasedSeverityConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/DotNetDiagnosticSeverityBasedSeverityConfigurationTests.cs
index 9c7566315984e..2020941ec19ca 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/DotNetDiagnosticSeverityBasedSeverityConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/DotNetDiagnosticSeverityBasedSeverityConfigurationTests.cs
@@ -59,29 +59,31 @@ public class NoneConfigurationTests : DotNetDiagnosticSeverityBasedSeverityConfi
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -89,29 +91,31 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_RuleExists_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.cs]
-dotnet_diagnostic.XYZ0001.severity = none   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.cs]
+                    dotnet_diagnostic.XYZ0001.severity = none   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -119,34 +123,36 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidHeader_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_diagnostic.XYZ0001.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.vb]
-dotnet_diagnostic.XYZ0001.severity = suggestion
-
-[*.cs]
-
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.vb]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion
+
+                    [*.cs]
+
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -154,17 +160,18 @@ class Program1 { }
             [Fact]
             public async Task ConfigureEditorconfig_MaintainExistingEntry_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestMissingInRegularAndScriptAsync(input);
             }
@@ -172,32 +179,34 @@ public async Task ConfigureEditorconfig_MaintainExistingEntry_None()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_InvalidRule_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_diagnostic.XYZ1111.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_diagnostic.XYZ1111.severity = none
-
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_diagnostic.XYZ1111.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_diagnostic.XYZ1111.severity = none
+
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -206,32 +215,34 @@ public async Task ConfigureEditorconfig_InvalidRule_None()
             [WorkItem("https://github.com/dotnet/roslyn/issues/45446")]
             public async Task ConfigureEditorconfig_MissingRule_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_diagnostic.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{vb,cs}]
-dotnet_diagnostic.severity = none
-
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_diagnostic.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{vb,cs}]
+                    dotnet_diagnostic.severity = none
+
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -239,31 +250,33 @@ public async Task ConfigureEditorconfig_MissingRule_None()
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RegexHeaderMatch_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program/file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fi*e.cs]
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\Program/file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fi*e.cs]
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program/file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fi*e.cs]
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\Program/file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fi*e.cs]
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -271,36 +284,38 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_RegexHeaderNonMatch_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\Program/file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fii*e.cs]
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\Program/file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*am/fii*e.cs]
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = warning
-
-[*.cs]
-
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\Program/file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fii*e.cs]
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\Program/file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*am/fii*e.cs]
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = warning
+
+                    [*.cs]
+
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -308,29 +323,31 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureGlobalconfig_Empty_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.globalconfig"">is_global = true</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.globalconfig"">is_global = true
-
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.globalconfig">is_global = true</AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.globalconfig">is_global = true
+
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -338,29 +355,31 @@ class Program1 { }
             [Fact]
             public async Task ConfigureGlobalconfig_RuleExists_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.globalconfig"">is_global = true   # Comment
-dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.globalconfig"">is_global = true   # Comment
-dotnet_diagnostic.XYZ0001.severity = none   # Comment
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.globalconfig">is_global = true   # Comment
+                    dotnet_diagnostic.XYZ0001.severity = suggestion   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.globalconfig">is_global = true   # Comment
+                    dotnet_diagnostic.XYZ0001.severity = none   # Comment
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -368,34 +387,36 @@ class Program1 { }
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureGlobalconfig_InvalidHeader_None()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|class Program1 { }|]
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.globalconfig"">[*.vb]
-dotnet_diagnostic.XYZ0001.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-class Program1 { }
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.globalconfig"">[*.vb]
-dotnet_diagnostic.XYZ0001.severity = suggestion
-
-[*.cs]
-
-# XYZ0001: Title
-dotnet_diagnostic.XYZ0001.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    [|class Program1 { }|]
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.globalconfig">[*.vb]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    class Program1 { }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.globalconfig">[*.vb]
+                    dotnet_diagnostic.XYZ0001.severity = suggestion
+
+                    [*.cs]
+
+                    # XYZ0001: Title
+                    dotnet_diagnostic.XYZ0001.severity = none
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/MultipleCodeStyleOptionBasedSeverityConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/MultipleCodeStyleOptionBasedSeverityConfigurationTests.cs
index de6a5e366ce19..afd257fe10017 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/MultipleCodeStyleOptionBasedSeverityConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/MultipleCodeStyleOptionBasedSeverityConfigurationTests.cs
@@ -39,69 +39,71 @@ public class ErrorConfigurationTests : MultipleCodeStyleOptionBasedSeverityConfi
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_Empty_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { [|RuleName|] = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig""></AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { RuleName = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0037: Use inferred member name
-dotnet_diagnostic.IDE0037.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { [|RuleName|] = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig"></AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { RuleName = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0037: Use inferred member name
+                    dotnet_diagnostic.IDE0037.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -110,82 +112,84 @@ static void Main(string[] args)
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_BothRulesExist_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { [|RuleName|] = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_anonymous_type_member_names = true:warning
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_tuple_names = true:suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { RuleName = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_anonymous_type_member_names = true:error
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_tuple_names = true:error
-
-# IDE0037: Use inferred member name
-dotnet_diagnostic.IDE0037.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { [|RuleName|] = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_anonymous_type_member_names = true:warning
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_tuple_names = true:suggestion
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { RuleName = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_anonymous_type_member_names = true:error
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_tuple_names = true:error
+
+                    # IDE0037: Use inferred member name
+                    dotnet_diagnostic.IDE0037.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -194,76 +198,78 @@ static void Main(string[] args)
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_OneRuleExists_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { [|RuleName|] = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_anonymous_type_member_names = true:warning
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { RuleName = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_anonymous_type_member_names = true:error
-
-# IDE0037: Use inferred member name
-dotnet_diagnostic.IDE0037.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { [|RuleName|] = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_anonymous_type_member_names = true:warning
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { RuleName = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_anonymous_type_member_names = true:error
+
+                    # IDE0037: Use inferred member name
+                    dotnet_diagnostic.IDE0037.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
@@ -272,85 +278,87 @@ static void Main(string[] args)
             [ConditionalFact(typeof(IsEnglishLocal))]
             public async Task ConfigureEditorconfig_AllPossibleEntriesExist_Error()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { [|RuleName|] = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_anonymous_type_member_names = true:warning
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_tuple_names = true:suggestion
-
-# IDE0037: Use inferred member name
-dotnet_diagnostic.IDE0037.severity = silent
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
-
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-using System;
-
-namespace ConsoleApp5
-{
-    class Foo 
-    {
-        public string RuleName = ""test"";
-    }
-
-    class Bar
-    {
-        static void Main(string[] args)
-        {
-            var foo = new Foo();
-
-            var bar = new { RuleName = foo.RuleName };
-
-            Console.WriteLine(bar.RuleName);
-        }
-    }
-}
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">[*.{cs,vb}]
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_anonymous_type_member_names = true:error
-
-# IDE0037: Use inferred member name
-dotnet_style_prefer_inferred_tuple_names = true:error
-
-# IDE0037: Use inferred member name
-dotnet_diagnostic.IDE0037.severity = error
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { [|RuleName|] = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_anonymous_type_member_names = true:warning
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_tuple_names = true:suggestion
+
+                    # IDE0037: Use inferred member name
+                    dotnet_diagnostic.IDE0037.severity = silent
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
+
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                             <Document FilePath="z:\\file.cs">
+                    using System;
+
+                    namespace ConsoleApp5
+                    {
+                        class Foo 
+                        {
+                            public string RuleName = "test";
+                        }
+
+                        class Bar
+                        {
+                            static void Main(string[] args)
+                            {
+                                var foo = new Foo();
+
+                                var bar = new { RuleName = foo.RuleName };
+
+                                Console.WriteLine(bar.RuleName);
+                            }
+                        }
+                    }
+                            </Document>
+                            <AnalyzerConfigDocument FilePath="z:\\.editorconfig">[*.{cs,vb}]
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_anonymous_type_member_names = true:error
+
+                    # IDE0037: Use inferred member name
+                    dotnet_style_prefer_inferred_tuple_names = true:error
+
+                    # IDE0037: Use inferred member name
+                    dotnet_diagnostic.IDE0037.severity = error
+                    </AnalyzerConfigDocument>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/VarForBuiltInTypesSeverityConfigurationTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/VarForBuiltInTypesSeverityConfigurationTests.cs
index 6912aba4e8f08..fe1c2c9d52191 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/VarForBuiltInTypesSeverityConfigurationTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Configuration/ConfigureSeverity/VarForBuiltInTypesSeverityConfigurationTests.cs
@@ -36,33 +36,35 @@ public async Task MaintainValue()
             Assert.False(CSharpCodeStyleOptions.VarForBuiltInTypes.DefaultValue.Value);
             Assert.Equal(NotificationOption2.Silent, CSharpCodeStyleOptions.VarForBuiltInTypes.DefaultValue.Notification);
 
-            var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document FilePath=""z:\\file.cs"">
-[|int|] x = 1;
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">
-[*.cs]
-csharp_style_var_for_built_in_types = true:suggestion
-dotnet_diagnostic.IDE0007.severity = suggestion
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+            var input = """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                        <Document FilePath="z:\\file.cs">
+                [|int|] x = 1;
+                        </Document>
+                        <AnalyzerConfigDocument FilePath="z:\\.editorconfig">
+                [*.cs]
+                csharp_style_var_for_built_in_types = true:suggestion
+                dotnet_diagnostic.IDE0007.severity = suggestion
+                </AnalyzerConfigDocument>
+                    </Project>
+                </Workspace>
+                """;
 
-            var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-         <Document FilePath=""z:\\file.cs"">
-int x = 1;
-        </Document>
-        <AnalyzerConfigDocument FilePath=""z:\\.editorconfig"">
-[*.cs]
-csharp_style_var_for_built_in_types = true:none
-dotnet_diagnostic.IDE0007.severity = none
-</AnalyzerConfigDocument>
-    </Project>
-</Workspace>";
+            var expected = """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                         <Document FilePath="z:\\file.cs">
+                int x = 1;
+                        </Document>
+                        <AnalyzerConfigDocument FilePath="z:\\.editorconfig">
+                [*.cs]
+                csharp_style_var_for_built_in_types = true:none
+                dotnet_diagnostic.IDE0007.severity = none
+                </AnalyzerConfigDocument>
+                    </Project>
+                </Workspace>
+                """;
 
             await TestInRegularAndScriptAsync(input, expected, CodeActionIndex);
         }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs
index b6ef1762a8f4b..d95932e494656 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/DiagnosticAnalyzerDriver/DiagnosticAnalyzerDriverTests.cs
@@ -75,15 +75,15 @@ public async Task DiagnosticAnalyzerDriverAllInOne()
         public async Task DiagnosticAnalyzerDriverVsAnalyzerDriverOnCodeBlock()
         {
             var methodNames = new string[] { "Initialize", "AnalyzeCodeBlock" };
-            var source = @"
-[System.Obsolete]
-class C
-{
-    int P { get; set; }
-    delegate void A();
-    delegate string F();
-}
-";
+            var source = """
+                [System.Obsolete]
+                class C
+                {
+                    int P { get; set; }
+                    delegate void A();
+                    delegate string F();
+                }
+                """;
 
             var ideEngineAnalyzer = new CSharpTrackingDiagnosticAnalyzer();
             using (var ideEngineWorkspace = TestWorkspace.CreateCSharp(source, composition: s_compositionWithMockDiagnosticUpdateSourceRegistrationService))
@@ -244,16 +244,16 @@ public static void AnalyzeSyntaxTree(SyntaxTreeAnalysisContext context)
         [Fact]
         public async Task CodeBlockAnalyzersOnlyAnalyzeExecutableCode()
         {
-            var source = @"
-using System;
-class C
-{
-    void F(int x = 0)
-    {
-        Console.WriteLine(0);
-    }
-}
-";
+            var source = """
+                using System;
+                class C
+                {
+                    void F(int x = 0)
+                    {
+                        Console.WriteLine(0);
+                    }
+                }
+                """;
 
             var analyzer = new CodeBlockAnalyzerFactory();
             using (var ideEngineWorkspace = TestWorkspace.CreateCSharp(source, composition: s_compositionWithMockDiagnosticUpdateSourceRegistrationService))
@@ -267,16 +267,16 @@ void F(int x = 0)
                 Assert.Equal(2, diagnosticsFromAnalyzer.Count());
             }
 
-            source = @"
-using System;
-class C
-{
-    void F(int x = 0, int y = 1, int z = 2)
-    {
-        Console.WriteLine(0);
-    }
-}
-";
+            source = """
+                using System;
+                class C
+                {
+                    void F(int x = 0, int y = 1, int z = 2)
+                    {
+                        Console.WriteLine(0);
+                    }
+                }
+                """;
 
             using (var compilerEngineWorkspace = TestWorkspace.CreateCSharp(source, composition: s_compositionWithMockDiagnosticUpdateSourceRegistrationService))
             {
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/FixAllProvider/BatchFixerTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/FixAllProvider/BatchFixerTests.cs
index 7e1547e70afd6..2a466108f6ec8 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/FixAllProvider/BatchFixerTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/FixAllProvider/BatchFixerTests.cs
@@ -102,57 +102,59 @@ public override FixAllProvider GetFixAllProvider()
         [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
         public async Task TestFixAllInDocument_QualifyWithThis()
         {
-            var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-class C
-{
-    int Sign;
-    void F()
-    {
-        string x = @""namespace Namespace
-    {
-        class Type
-        {
-            void Goo()
-            {
-                int x = 1 "" + {|FixAllInDocument:Sign|} + @"" "" + Sign + @""3;
-            }
-        }
-    }
-"";
-    }
-}
-        </Document>
-    </Project>
-</Workspace>";
-
-            var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-class C
-{
-    int Sign;
-    void F()
-    {
-        string x = @""namespace Namespace
-    {
-        class Type
-        {
-            void Goo()
-            {
-                int x = 1 "" + this.Sign + @"" "" + this.Sign + @""3;
-            }
-        }
-    }
-"";
-    }
-}
-        </Document>
-    </Project>
-</Workspace>";
+            var input = """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                        <Document>
+                class C
+                {
+                    int Sign;
+                    void F()
+                    {
+                        string x = @"namespace Namespace
+                    {
+                        class Type
+                        {
+                            void Goo()
+                            {
+                                int x = 1 " + {|FixAllInDocument:Sign|} + @" " + Sign + @"3;
+                            }
+                        }
+                    }
+                ";
+                    }
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
+
+            var expected = """
+                <Workspace>
+                    <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                        <Document>
+                class C
+                {
+                    int Sign;
+                    void F()
+                    {
+                        string x = @"namespace Namespace
+                    {
+                        class Type
+                        {
+                            void Goo()
+                            {
+                                int x = 1 " + this.Sign + @" " + this.Sign + @"3;
+                            }
+                        }
+                    }
+                ";
+                    }
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             await TestInRegularAndScriptAsync(input, expected);
         }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixAllTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixAllTests.cs
index e82dce423ae68..a3aaead8ceeda 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixAllTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixAllTests.cs
@@ -26,95 +26,97 @@ public partial class UserInfoDiagnosticSuppressionTests : CSharpPragmaWarningDis
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInDocument()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInDocument:class Class1|}
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-class Class3 { }
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
-
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class1
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class2
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-}
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class3 { }
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInDocument:class Class1|}
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                        class Class3 { }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
+
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class1
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class2
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                        }
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class3 { }
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     await TestInRegularAndScriptAsync(input, expected);
                 }
@@ -123,93 +125,95 @@ class Class2
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInProject()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInProject:class Class1|}
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
-
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class1
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class2
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-}
-        </Document>
-        <Document>
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class3
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInProject:class Class1|}
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
+
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class1
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class2
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class3
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     await TestInRegularAndScriptAsync(input, expected);
                 }
@@ -218,97 +222,99 @@ class Class2
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInSolution()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInSolution:class Class1|}
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
-
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class1
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class2
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-}
-        </Document>
-        <Document>
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class3
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class1
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-class Class2
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInSolution:class Class1|}
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
+
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class1
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class2
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class3
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class1
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        class Class2
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     await TestInRegularAndScriptAsync(input, expected);
                 }
@@ -317,27 +323,28 @@ class Class2
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInContainingMember()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInContainingMember:class Class1|}
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-class Class3 { }
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInContainingMember:class Class1|}
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                        class Class3 { }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     await TestMissingInRegularAndScriptAsync(input);
                 }
@@ -346,93 +353,95 @@ class Class3 { }
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInContainingType()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInContainingType:partial class Class1|}
-{
-    int Method1()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-    int Method2()
-    {
-        int x = 0;
-    }
-}
-        </Document>
-        <Document>
-partial class Class1
-{
-    int Method3()
-    {
-        int x = 0;
-    }
-}
-
-class Class4
-{
-    int Method4()
-    {
-        int x = 0;
-    }
-}
-        </Document>
-    </Project>
-</Workspace>";
-
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-partial class Class1
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-    int Method1()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-    int Method2()
-    {
-        int x = 0;
-    }
-}
-        </Document>
-        <Document>
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-partial class Class1
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-    int Method3()
-    {
-        int x = 0;
-    }
-}
-
-class Class4
-{
-    int Method4()
-    {
-        int x = 0;
-    }
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInContainingType:partial class Class1|}
+                        {
+                            int Method1()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                            int Method2()
+                            {
+                                int x = 0;
+                            }
+                        }
+                                </Document>
+                                <Document>
+                        partial class Class1
+                        {
+                            int Method3()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class4
+                        {
+                            int Method4()
+                            {
+                                int x = 0;
+                            }
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
+
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        partial class Class1
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                            int Method1()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                            int Method2()
+                            {
+                                int x = 0;
+                            }
+                        }
+                                </Document>
+                                <Document>
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        partial class Class1
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                            int Method3()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class4
+                        {
+                            int Method4()
+                            {
+                                int x = 0;
+                            }
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     await TestInRegularAndScriptAsync(input, expected);
                 }
@@ -451,46 +460,47 @@ public partial class UserInfoDiagnosticSuppressionTests : CSharpGlobalSuppressMe
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInDocument()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInDocument:class Class1|}
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInDocument:class Class1|}
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     var addedGlobalSuppressions =
 $@"// This file is used by Code Analysis to maintain SuppressMessage
@@ -506,48 +516,51 @@ class Class2
 "
     .Replace("<", "&lt;").Replace(">", "&gt;");
 
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                                <Document FilePath="GlobalSuppressions.cs">
+                        """ + addedGlobalSuppressions +
+        """
         </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-        <Document FilePath=""GlobalSuppressions.cs"">" + addedGlobalSuppressions +
-        @"</Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
+            </Project>
+            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                <Document>
+        class Class1
+        {
+            int Method()
+            {
+                int x = 0;
+            }
+        }
 
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+        class Class2
+        {
+        }
+                </Document>
+            </Project>
+        </Workspace>
+        """;
 
                     await TestInRegularAndScriptAsync(input, expected, index: 1);
                 }
@@ -556,46 +569,47 @@ class Class2
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInProject()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInProject:class Class1|}
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInProject:class Class1|}
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     var addedGlobalSuppressions =
 $@"// This file is used by Code Analysis to maintain SuppressMessage
@@ -612,48 +626,51 @@ class Class2
 "
     .Replace("<", "&lt;").Replace(">", "&gt;");
 
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                                <Document FilePath="GlobalSuppressions.cs">
+                        """ + addedGlobalSuppressions +
+        """
         </Document>
-        <Document FilePath=""GlobalSuppressions.cs"">" + addedGlobalSuppressions +
-        @"</Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
+            </Project>
+            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                <Document>
+        class Class1
+        {
+            int Method()
+            {
+                int x = 0;
+            }
+        }
 
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+        class Class2
+        {
+        }
+                </Document>
+            </Project>
+        </Workspace>
+        """;
 
                     await TestInRegularAndScriptAsync(input, expected, index: 1);
                 }
@@ -662,46 +679,47 @@ class Class2
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInSolution()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInSolution:class Class1|}
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInSolution:class Class1|}
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     var addedGlobalSuppressionsProject1 =
 $@"// This file is used by Code Analysis to maintain SuppressMessage
@@ -732,50 +750,55 @@ class Class2
 
 ".Replace("<", "&lt;").Replace(">", "&gt;");
 
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                                <Document FilePath="GlobalSuppressions.cs">
+                        """ + addedGlobalSuppressionsProject1 +
+        """
         </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-        <Document FilePath=""GlobalSuppressions.cs"">" + addedGlobalSuppressionsProject1 +
-        @"</Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
+            </Project>
+            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                <Document>
+        class Class1
+        {
+            int Method()
+            {
+                int x = 0;
+            }
+        }
 
-class Class2
-{
-}
+        class Class2
+        {
+        }
+                </Document>
+                <Document FilePath="GlobalSuppressions.cs">
+        """ + addedGlobalSuppressionsProject2 +
+        """
         </Document>
-        <Document FilePath=""GlobalSuppressions.cs"">" + addedGlobalSuppressionsProject2 +
-        @"</Document>
-    </Project>
-</Workspace>";
+            </Project>
+        </Workspace>
+        """;
 
                     await TestInRegularAndScriptAsync(input, expected);
                 }
@@ -784,26 +807,27 @@ class Class2
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInContainingMember()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInContainingMember:class Class1|}
-{
-    int Method1()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInContainingMember:class Class1|}
+                        {
+                            int Method1()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     await TestMissingInRegularAndScriptAsync(input);
                 }
@@ -812,39 +836,40 @@ class Class2
                 [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
                 public async Task TestFixAllInContainingType()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInContainingType:partial class Class1|}
-{
-    int Method1()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-partial class Class1
-{
-    int Method2()
-    {
-        int x = 0;
-    }
-}
-
-class Class3
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInContainingType:partial class Class1|}
+                        {
+                            int Method1()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        partial class Class1
+                        {
+                            int Method2()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     var addedGlobalSuppressions =
 $@"// This file is used by Code Analysis to maintain SuppressMessage
@@ -860,41 +885,44 @@ class Class3
 "
     .Replace("<", "&lt;").Replace(">", "&gt;");
 
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-partial class Class1
-{
-    int Method1()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-partial class Class1
-{
-    int Method2()
-    {
-        int x = 0;
-    }
-}
-
-class Class3
-{
-}
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        partial class Class1
+                        {
+                            int Method1()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                                <Document>
+                        partial class Class1
+                        {
+                            int Method2()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class3
+                        {
+                        }
+                                </Document>
+                                <Document FilePath="GlobalSuppressions.cs">
+                        """ + addedGlobalSuppressions +
+        """
         </Document>
-        <Document FilePath=""GlobalSuppressions.cs"">" + addedGlobalSuppressions +
-        @"</Document>
-    </Project>
-</Workspace>";
+            </Project>
+        </Workspace>
+        """;
 
                     await TestInRegularAndScriptAsync(input, expected, index: 1);
                 }
@@ -908,46 +936,47 @@ public partial class CSharpDiagnosticWithoutLocationSuppressionTests : CSharpSup
             [Trait(Traits.Feature, Traits.Features.CodeActionsFixAllOccurrences)]
             public async Task TestFixAllInProject()
             {
-                var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>{|FixAllInProject:|}
-using System;
-
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                var input = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document>{|FixAllInProject:|}
+                    using System;
+
+                    class Class1
+                    {
+                        int Method()
+                        {
+                            int x = 0;
+                        }
+                    }
+
+                    class Class2
+                    {
+                    }
+                            </Document>
+                            <Document>
+                    class Class3
+                    {
+                    }
+                            </Document>
+                        </Project>
+                        <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                            <Document>
+                    class Class1
+                    {
+                        int Method()
+                        {
+                            int x = 0;
+                        }
+                    }
+
+                    class Class2
+                    {
+                    }
+                            </Document>
+                        </Project>
+                    </Workspace>
+                    """;
 
                 var addedGlobalSuppressions =
 $@"// This file is used by Code Analysis to maintain SuppressMessage
@@ -961,48 +990,51 @@ class Class2
 "
     .Replace("<", "&lt;").Replace(">", "&gt;");
 
-                var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-class Class1
-{
-    int Method()
+                var expected = """
+                    <Workspace>
+                        <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                            <Document>
+                    using System;
+
+                    class Class1
+                    {
+                        int Method()
+                        {
+                            int x = 0;
+                        }
+                    }
+
+                    class Class2
+                    {
+                    }
+                            </Document>
+                            <Document>
+                    class Class3
+                    {
+                    }
+                            </Document>
+                            <Document FilePath="GlobalSuppressions.cs">
+                    """ + addedGlobalSuppressions +
+    """
+    </Document>
+        </Project>
+        <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+            <Document>
+    class Class1
     {
-        int x = 0;
+        int Method()
+        {
+            int x = 0;
+        }
     }
-}
 
-class Class2
-{
-}
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-        <Document FilePath=""GlobalSuppressions.cs"">" + addedGlobalSuppressions +
-    @"</Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
+    class Class2
     {
-        int x = 0;
     }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+            </Document>
+        </Project>
+    </Workspace>
+    """;
 
                 await TestInRegularAndScriptAsync(input, expected);
             }
diff --git a/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixMultipleTests.cs b/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixMultipleTests.cs
index 591056312f3b3..e025f43c3254a 100644
--- a/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixMultipleTests.cs
+++ b/src/EditorFeatures/CSharpTest/Diagnostics/Suppression/SuppressionTest_FixMultipleTests.cs
@@ -64,97 +64,99 @@ public class CSharpFixMultiplePragmaWarningSuppressionTests : CSharpFixMultipleS
                 [WorkItem("https://github.com/dotnet/roslyn/issues/6455")]
                 public async Task TestFixMultipleInDocument()
                 {
-                    var input = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-{|FixAllInSelection:class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}|}
-class Class3 { }
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
-
-                    var expected = @"
-<Workspace>
-    <Project Language=""C#"" AssemblyName=""Assembly1"" CommonReferences=""true"">
-        <Document>
-using System;
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-#pragma warning disable InfoDiagnostic2 // InfoDiagnostic2 Title
-class Class1
-#pragma warning restore InfoDiagnostic2 // InfoDiagnostic2 Title
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-#pragma warning disable InfoDiagnostic // InfoDiagnostic Title
-#pragma warning disable InfoDiagnostic2 // InfoDiagnostic2 Title
-class Class2
-#pragma warning restore InfoDiagnostic2 // InfoDiagnostic2 Title
-#pragma warning restore InfoDiagnostic // InfoDiagnostic Title
-{
-}
-class Class3 { }
-        </Document>
-        <Document>
-class Class3
-{
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" AssemblyName=""Assembly2"" CommonReferences=""true"">
-        <Document>
-class Class1
-{
-    int Method()
-    {
-        int x = 0;
-    }
-}
-
-class Class2
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                    var input = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        {|FixAllInSelection:class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }|}
+                        class Class3 { }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
+
+                    var expected = """
+                        <Workspace>
+                            <Project Language="C#" AssemblyName="Assembly1" CommonReferences="true">
+                                <Document>
+                        using System;
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        #pragma warning disable InfoDiagnostic2 // InfoDiagnostic2 Title
+                        class Class1
+                        #pragma warning restore InfoDiagnostic2 // InfoDiagnostic2 Title
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        #pragma warning disable InfoDiagnostic // InfoDiagnostic Title
+                        #pragma warning disable InfoDiagnostic2 // InfoDiagnostic2 Title
+                        class Class2
+                        #pragma warning restore InfoDiagnostic2 // InfoDiagnostic2 Title
+                        #pragma warning restore InfoDiagnostic // InfoDiagnostic Title
+                        {
+                        }
+                        class Class3 { }
+                                </Document>
+                                <Document>
+                        class Class3
+                        {
+                        }
+                                </Document>
+                            </Project>
+                            <Project Language="C#" AssemblyName="Assembly2" CommonReferences="true">
+                                <Document>
+                        class Class1
+                        {
+                            int Method()
+                            {
+                                int x = 0;
+                            }
+                        }
+
+                        class Class2
+                        {
+                        }
+                                </Document>
+                            </Project>
+                        </Workspace>
+                        """;
 
                     await TestInRegularAndScriptAsync(input, expected);
                 }
diff --git a/src/EditorFeatures/CSharpTest/DocumentationComments/XmlTagCompletionTests.cs b/src/EditorFeatures/CSharpTest/DocumentationComments/XmlTagCompletionTests.cs
index a43a8d883e71a..f939048b42e1c 100644
--- a/src/EditorFeatures/CSharpTest/DocumentationComments/XmlTagCompletionTests.cs
+++ b/src/EditorFeatures/CSharpTest/DocumentationComments/XmlTagCompletionTests.cs
@@ -26,13 +26,15 @@ private protected override TestWorkspace CreateTestWorkspace(string initialMarku
         [WpfFact]
         public void SimpleTagCompletion()
         {
-            var text = @"
-/// <goo$$
-class c { }";
+            var text = """
+                /// <goo$$
+                class c { }
+                """;
 
-            var expected = @"
-/// <goo>$$</goo>
-class c { }";
+            var expected = """
+                /// <goo>$$</goo>
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -40,17 +42,19 @@ class c { }";
         [WpfFact]
         public void NestedTagCompletion()
         {
-            var text = @"
-/// <summary>
-/// <goo$$
-/// </summary>
-class c { }";
-
-            var expected = @"
-/// <summary>
-/// <goo>$$</goo>
-/// </summary>
-class c { }";
+            var text = """
+                /// <summary>
+                /// <goo$$
+                /// </summary>
+                class c { }
+                """;
+
+            var expected = """
+                /// <summary>
+                /// <goo>$$</goo>
+                /// </summary>
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -58,15 +62,17 @@ class c { }";
         [WpfFact]
         public void CompleteBeforeIncompleteTag()
         {
-            var text = @"
-/// <goo$$
-/// </summary>
-class c { }";
-
-            var expected = @"
-/// <goo>$$</goo>
-/// </summary>
-class c { }";
+            var text = """
+                /// <goo$$
+                /// </summary>
+                class c { }
+                """;
+
+            var expected = """
+                /// <goo>$$</goo>
+                /// </summary>
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -74,13 +80,15 @@ class c { }";
         [WpfFact]
         public void NotEmptyElement()
         {
-            var text = @"
-/// <$$
-class c { }";
+            var text = """
+                /// <$$
+                class c { }
+                """;
 
-            var expected = @"
-/// <>$$
-class c { }";
+            var expected = """
+                /// <>$$
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -88,13 +96,15 @@ class c { }";
         [WpfFact]
         public void NotAlreadyCompleteTag()
         {
-            var text = @"
-/// <goo$$</goo>
-class c { }";
+            var text = """
+                /// <goo$$</goo>
+                class c { }
+                """;
 
-            var expected = @"
-/// <goo>$$</goo>
-class c { }";
+            var expected = """
+                /// <goo>$$</goo>
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -102,17 +112,19 @@ class c { }";
         [WpfFact]
         public void NotAlreadyCompleteTag2()
         {
-            var text = @"
-/// <goo$$
-///
-/// </goo>
-class c { }";
-
-            var expected = @"
-/// <goo>$$
-///
-/// </goo>
-class c { }";
+            var text = """
+                /// <goo$$
+                ///
+                /// </goo>
+                class c { }
+                """;
+
+            var expected = """
+                /// <goo>$$
+                ///
+                /// </goo>
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -120,13 +132,15 @@ class c { }";
         [WpfFact]
         public void SimpleSlashCompletion()
         {
-            var text = @"
-/// <goo><$$
-class c { }";
+            var text = """
+                /// <goo><$$
+                class c { }
+                """;
 
-            var expected = @"
-/// <goo></goo>$$
-class c { }";
+            var expected = """
+                /// <goo></goo>$$
+                class c { }
+                """;
 
             Verify(text, expected, '/');
         }
@@ -134,17 +148,19 @@ class c { }";
         [WpfFact]
         public void NestedSlashTagCompletion()
         {
-            var text = @"
-/// <summary>
-/// <goo><$$
-/// </summary>
-class c { }";
-
-            var expected = @"
-/// <summary>
-/// <goo></goo>$$
-/// </summary>
-class c { }";
+            var text = """
+                /// <summary>
+                /// <goo><$$
+                /// </summary>
+                class c { }
+                """;
+
+            var expected = """
+                /// <summary>
+                /// <goo></goo>$$
+                /// </summary>
+                class c { }
+                """;
 
             Verify(text, expected, '/');
         }
@@ -152,15 +168,17 @@ class c { }";
         [WpfFact]
         public void SlashCompleteBeforeIncompleteTag()
         {
-            var text = @"
-/// <goo><$$
-/// </summary>
-class c { }";
-
-            var expected = @"
-/// <goo></goo>$$
-/// </summary>
-class c { }";
+            var text = """
+                /// <goo><$$
+                /// </summary>
+                class c { }
+                """;
+
+            var expected = """
+                /// <goo></goo>$$
+                /// </summary>
+                class c { }
+                """;
 
             Verify(text, expected, '/');
         }
@@ -168,13 +186,15 @@ class c { }";
         [WpfFact]
         public void SlashNotEmptyElement()
         {
-            var text = @"
-/// <><$$
-class c { }";
+            var text = """
+                /// <><$$
+                class c { }
+                """;
 
-            var expected = @"
-/// <></$$
-class c { }";
+            var expected = """
+                /// <></$$
+                class c { }
+                """;
 
             Verify(text, expected, '/');
         }
@@ -182,13 +202,15 @@ class c { }";
         [WpfFact]
         public void SlashNotAlreadyCompleteTag()
         {
-            var text = @"
-/// <goo><$$goo>
-class c { }";
+            var text = """
+                /// <goo><$$goo>
+                class c { }
+                """;
 
-            var expected = @"
-/// <goo></$$goo>
-class c { }";
+            var expected = """
+                /// <goo></$$goo>
+                class c { }
+                """;
 
             Verify(text, expected, '/');
         }
@@ -196,17 +218,19 @@ class c { }";
         [WpfFact]
         public void SlashNotAlreadyCompleteTag2()
         {
-            var text = @"
-/// <goo>
-///
-/// <$$goo>
-class c { }";
-
-            var expected = @"
-/// <goo>
-///
-/// </$$goo>
-class c { }";
+            var text = """
+                /// <goo>
+                ///
+                /// <$$goo>
+                class c { }
+                """;
+
+            var expected = """
+                /// <goo>
+                ///
+                /// </$$goo>
+                class c { }
+                """;
 
             Verify(text, expected, '/');
         }
@@ -214,13 +238,15 @@ class c { }";
         [WpfFact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/638800")]
         public void NestedIdenticalTags()
         {
-            var text = @"
-/// <goo><goo$$</goo>
-class c { }";
+            var text = """
+                /// <goo><goo$$</goo>
+                class c { }
+                """;
 
-            var expected = @"
-/// <goo><goo>$$</goo></goo>
-class c { }";
+            var expected = """
+                /// <goo><goo>$$</goo></goo>
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -228,13 +254,15 @@ class c { }";
         [WpfFact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/638800")]
         public void MultipleNestedIdenticalTags()
         {
-            var text = @"
-/// <goo><goo><goo$$</goo></goo>
-class c { }";
+            var text = """
+                /// <goo><goo><goo$$</goo></goo>
+                class c { }
+                """;
 
-            var expected = @"
-/// <goo><goo><goo>$$</goo></goo></goo>
-class c { }";
+            var expected = """
+                /// <goo><goo><goo>$$</goo></goo></goo>
+                class c { }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -242,17 +270,19 @@ class c { }";
         [WpfFact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/638235")]
         public void SlashNotIfCloseTagFollows()
         {
-            var text = @"
-/// <summary>
-/// <$$
-/// </summary>
-class c { }";
-
-            var expected = @"
-/// <summary>
-/// </$$
-/// </summary>
-class c { }";
+            var text = """
+                /// <summary>
+                /// <$$
+                /// </summary>
+                class c { }
+                """;
+
+            var expected = """
+                /// <summary>
+                /// </$$
+                /// </summary>
+                class c { }
+                """;
 
             Verify(text, expected, '/');
         }
@@ -260,13 +290,15 @@ class c { }";
         [WpfFact]
         public void TestSimpleTagCompletion()
         {
-            var text = @"
-/// <goo$$
-class C {}";
+            var text = """
+                /// <goo$$
+                class C {}
+                """;
 
-            var expected = @"
-/// <goo>$$</goo>
-class C {}";
+            var expected = """
+                /// <goo>$$</goo>
+                class C {}
+                """;
 
             Verify(text, expected, '>');
         }
@@ -274,17 +306,19 @@ class C {}";
         [WpfFact]
         public void TestNestedTagCompletion()
         {
-            var text = @"
-/// <summary>
-/// <goo$$
-/// </summary>
-class C {}";
-
-            var expected = @"
-/// <summary>
-/// <goo>$$</goo>
-/// </summary>
-class C {}";
+            var text = """
+                /// <summary>
+                /// <goo$$
+                /// </summary>
+                class C {}
+                """;
+
+            var expected = """
+                /// <summary>
+                /// <goo>$$</goo>
+                /// </summary>
+                class C {}
+                """;
 
             Verify(text, expected, '>');
         }
@@ -292,15 +326,17 @@ class C {}";
         [WpfFact]
         public void TestCompleteBeforeIncompleteTag()
         {
-            var text = @"
-/// <goo$$
-/// </summary>
-class C {}";
-
-            var expected = @"
-/// <goo>$$</goo>
-/// </summary>
-class C {}";
+            var text = """
+                /// <goo$$
+                /// </summary>
+                class C {}
+                """;
+
+            var expected = """
+                /// <goo>$$</goo>
+                /// </summary>
+                class C {}
+                """;
 
             Verify(text, expected, '>');
         }
@@ -308,13 +344,15 @@ class C {}";
         [WpfFact]
         public void TestNotEmptyElement()
         {
-            var text = @"
-/// <$$
-class C {}";
+            var text = """
+                /// <$$
+                class C {}
+                """;
 
-            var expected = @"
-/// <>$$
-class C {}";
+            var expected = """
+                /// <>$$
+                class C {}
+                """;
 
             Verify(text, expected, '>');
         }
@@ -322,13 +360,15 @@ class C {}";
         [WpfFact]
         public void TestNotAlreadyCompleteTag()
         {
-            var text = @"
-/// <goo$$</goo>
-class C {}";
+            var text = """
+                /// <goo$$</goo>
+                class C {}
+                """;
 
-            var expected = @"
-/// <goo>$$</goo>
-class C {}";
+            var expected = """
+                /// <goo>$$</goo>
+                class C {}
+                """;
 
             Verify(text, expected, '>');
         }
@@ -336,17 +376,19 @@ class C {}";
         [WpfFact]
         public void TestNotAlreadyCompleteTag2()
         {
-            var text = @"
-/// <goo$$
-///
-/// </goo>
-class C {}";
-
-            var expected = @"
-/// <goo>$$
-///
-/// </goo>
-class C {}";
+            var text = """
+                /// <goo$$
+                ///
+                /// </goo>
+                class C {}
+                """;
+
+            var expected = """
+                /// <goo>$$
+                ///
+                /// </goo>
+                class C {}
+                """;
 
             Verify(text, expected, '>');
         }
@@ -354,17 +396,19 @@ class C {}";
         [WpfFact]
         public void TestNotOutsideDocComment()
         {
-            var text = @"
-class C
-{
-    private int z = <goo$$
-}";
-
-            var expected = @"
-class C
-{
-    private int z = <goo>$$
-}";
+            var text = """
+                class C
+                {
+                    private int z = <goo$$
+                }
+                """;
+
+            var expected = """
+                class C
+                {
+                    private int z = <goo>$$
+                }
+                """;
 
             Verify(text, expected, '>');
         }
@@ -372,17 +416,19 @@ class C
         [WpfFact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/638235")]
         public void TestNotCloseClosedTag()
         {
-            var text = @"
-/// <summary>
-/// <$$
-/// </summary>
-class C {}";
-
-            var expected = @"
-/// <summary>
-/// </$$
-/// </summary>
-class C {}";
+            var text = """
+                /// <summary>
+                /// <$$
+                /// </summary>
+                class C {}
+                """;
+
+            var expected = """
+                /// <summary>
+                /// </$$
+                /// </summary>
+                class C {}
+                """;
 
             Verify(text, expected, '/');
         }
diff --git a/src/EditorFeatures/CSharpTest/EncapsulateField/EncapsulateFieldCommandHandlerTests.cs b/src/EditorFeatures/CSharpTest/EncapsulateField/EncapsulateFieldCommandHandlerTests.cs
index 07f2c043e31a3..c8cfe9b76ad51 100644
--- a/src/EditorFeatures/CSharpTest/EncapsulateField/EncapsulateFieldCommandHandlerTests.cs
+++ b/src/EditorFeatures/CSharpTest/EncapsulateField/EncapsulateFieldCommandHandlerTests.cs
@@ -24,39 +24,41 @@ public class EncapsulateFieldCommandHandlerTests
         [WpfFact, Trait(Traits.Feature, Traits.Features.EncapsulateField)]
         public async Task EncapsulatePrivateField()
         {
-            var text = @"
-class C
-{
-    private int f$$ield;
-
-    private void goo()
-    {
-        field = 3;
-    }
-}";
-            var expected = @"
-class C
-{
-    private int field;
-
-    public int Field
-    {
-        get
-        {
-            return field;
-        }
+            var text = """
+                class C
+                {
+                    private int f$$ield;
+
+                    private void goo()
+                    {
+                        field = 3;
+                    }
+                }
+                """;
+            var expected = """
+                class C
+                {
+                    private int field;
+
+                    public int Field
+                    {
+                        get
+                        {
+                            return field;
+                        }
 
-        set
-        {
-            field = value;
-        }
-    }
+                        set
+                        {
+                            field = value;
+                        }
+                    }
 
-    private void goo()
-    {
-        Field = 3;
-    }
-}";
+                    private void goo()
+                    {
+                        Field = 3;
+                    }
+                }
+                """;
 
             using var state = EncapsulateFieldTestState.Create(text);
             await state.AssertEncapsulateAsAsync(expected);
@@ -65,39 +67,41 @@ private void goo()
         [WpfFact, Trait(Traits.Feature, Traits.Features.EncapsulateField)]
         public async Task EncapsulateNonPrivateField()
         {
-            var text = @"
-class C
-{
-    protected int fi$$eld;
-
-    private void goo()
-    {
-        field = 3;
-    }
-}";
-            var expected = @"
-class C
-{
-    private int field;
+            var text = """
+                class C
+                {
+                    protected int fi$$eld;
+
+                    private void goo()
+                    {
+                        field = 3;
+                    }
+                }
+                """;
+            var expected = """
+                class C
+                {
+                    private int field;
+
+                    protected int Field
+                    {
+                        get
+                        {
+                            return field;
+                        }
 
-    protected int Field
-    {
-        get
-        {
-            return field;
-        }
+                        set
+                        {
+                            field = value;
+                        }
+                    }
 
-        set
-        {
-            field = value;
-        }
-    }
-
-    private void goo()
-    {
-        Field = 3;
-    }
-}";
+                    private void goo()
+                    {
+                        Field = 3;
+                    }
+                }
+                """;
 
             using var state = EncapsulateFieldTestState.Create(text);
             await state.AssertEncapsulateAsAsync(expected);
@@ -106,16 +110,17 @@ private void goo()
         [WpfFact, Trait(Traits.Feature, Traits.Features.EncapsulateField)]
         public async Task DialogShownIfNotFieldsFound()
         {
-            var text = @"
-class$$ C
-{
-    private int field;
-
-    private void goo()
-    {
-        field = 3;
-    }
-}";
+            var text = """
+                class$$ C
+                {
+                    private int field;
+
+                    private void goo()
+                    {
+                        field = 3;
+                    }
+                }
+                """;
 
             using var state = EncapsulateFieldTestState.Create(text);
             await state.AssertErrorAsync();
@@ -125,58 +130,58 @@ private void goo()
         [WpfFact, Trait(Traits.Feature, Traits.Features.EncapsulateField)]
         public async Task EncapsulateTwoFields()
         {
-            var text = @"
-class Program
-{
-    [|static int A = 1;
-    static int B = A;|]
- 
-    static void Main(string[] args)
-    {
-        System.Console.WriteLine(A);
-        System.Console.WriteLine(B);
-    }
-}
-";
-            var expected = @"
-class Program
-{
-    static int A = 1;
-    static int B = A1;
-
-    public static int A1
-    {
-        get
-        {
-            return A;
-        }
+            var text = """
+                class Program
+                {
+                    [|static int A = 1;
+                    static int B = A;|]
+
+                    static void Main(string[] args)
+                    {
+                        System.Console.WriteLine(A);
+                        System.Console.WriteLine(B);
+                    }
+                }
+                """;
+            var expected = """
+                class Program
+                {
+                    static int A = 1;
+                    static int B = A1;
+
+                    public static int A1
+                    {
+                        get
+                        {
+                            return A;
+                        }
 
-        set
-        {
-            A = value;
-        }
-    }
+                        set
+                        {
+                            A = value;
+                        }
+                    }
 
-    public static int B1
-    {
-        get
-        {
-            return B;
-        }
+                    public static int B1
+                    {
+                        get
+                        {
+                            return B;
+                        }
 
-        set
-        {
-            B = value;
-        }
-    }
+                        set
+                        {
+                            B = value;
+                        }
+                    }
 
-    static void Main(string[] args)
-    {
-        System.Console.WriteLine(A1);
-        System.Console.WriteLine(B1);
-    }
-}
-";
+                    static void Main(string[] args)
+                    {
+                        System.Console.WriteLine(A1);
+                        System.Console.WriteLine(B1);
+                    }
+                }
+                """;
 
             using var state = EncapsulateFieldTestState.Create(text);
             await state.AssertEncapsulateAsAsync(expected);
@@ -187,15 +192,16 @@ static void Main(string[] args)
         [Trait(Traits.Feature, Traits.Features.Interactive)]
         public void EncapsulateFieldCommandDisabledInSubmission()
         {
-            using var workspace = TestWorkspace.Create(XElement.Parse(@"
+            using var workspace = TestWorkspace.Create(XElement.Parse("""
                 <Workspace>
-                    <Submission Language=""C#"" CommonReferences=""true"">  
+                    <Submission Language="C#" CommonReferences="true">  
                         class C
                         {
                             object $$goo;
                         }
                     </Submission>
-                </Workspace> "),
+                </Workspace>
+                """),
                 workspaceKind: WorkspaceKind.Interactive,
                 composition: EditorTestCompositions.EditorFeaturesWpf);
             // Force initialization.
diff --git a/src/EditorFeatures/CSharpTest/EventHookup/EventHookupTestState.cs b/src/EditorFeatures/CSharpTest/EventHookup/EventHookupTestState.cs
index 795994e817064..4b8c338a718f0 100644
--- a/src/EditorFeatures/CSharpTest/EventHookup/EventHookupTestState.cs
+++ b/src/EditorFeatures/CSharpTest/EventHookup/EventHookupTestState.cs
@@ -48,12 +48,13 @@ public static EventHookupTestState CreateTestState(string markup, OptionsCollect
             => new EventHookupTestState(GetWorkspaceXml(markup), options);
 
         public static XElement GetWorkspaceXml(string markup)
-            => XElement.Parse(string.Format(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document>{0}</Document>
-    </Project>
-</Workspace>", markup));
+            => XElement.Parse(string.Format("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document>{0}</Document>
+                    </Project>
+                </Workspace>
+                """, markup));
 
         internal void AssertShowing(string expectedText)
         {
diff --git a/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/AbstractContextTests.cs b/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/AbstractContextTests.cs
index dc596f6defaae..45274536615dc 100644
--- a/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/AbstractContextTests.cs
+++ b/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/AbstractContextTests.cs
@@ -119,21 +119,25 @@ protected void VerifyFalse(string text)
         protected static string AddInsideMethod(string text)
         {
             return
-@"class C
-{
-  void F()
-  {
-    " + text +
-@"  }
-}";
+                """
+                class C
+                {
+                  void F()
+                  {
+                """ + text +
+                """
+                  }
+                }
+                """;
         }
 
         protected static string AddInsideClass(string text)
         {
             return
-@"class C
-{
-    " + text +
+                """
+                class C
+                {
+                """ + text +
 @"}";
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/NamespaceContextTests.cs b/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/NamespaceContextTests.cs
index 9aaf3a5574b65..4c2a2c4524432 100644
--- a/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/NamespaceContextTests.cs
+++ b/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/NamespaceContextTests.cs
@@ -28,9 +28,11 @@ public void UsingDirective()
         [Fact]
         public void InactiveRegion()
         {
-            VerifyFalse(@"#if false 
-$$
-#endif");
+            VerifyFalse("""
+                #if false 
+                $$
+                #endif
+                """);
         }
 
         [Fact]
@@ -40,9 +42,11 @@ public void SingleLineComment1()
         [Fact]
         public void SingleLineComment2()
         {
-            VerifyTrue(@"class C { 
-//
-$$");
+            VerifyTrue("""
+                class C { 
+                //
+                $$
+                """);
         }
 
         [Fact]
@@ -76,8 +80,10 @@ public void AssemblyAttribute()
         [Fact]
         public void TypeAttribute()
         {
-            VerifyTrue(@"[$$]
-class CL {}");
+            VerifyTrue("""
+                [$$]
+                class CL {}
+                """);
         }
 
         [Fact]
@@ -87,26 +93,32 @@ public void TypeParamAttribute()
         [Fact]
         public void MethodAttribute()
         {
-            VerifyTrue(@"class CL {
-    [$$]
-    void Method() {}
-}");
+            VerifyTrue("""
+                class CL {
+                    [$$]
+                    void Method() {}
+                }
+                """);
         }
 
         [Fact]
         public void MethodTypeParamAttribute()
         {
-            VerifyTrue(@"class CL{
-    void Method<[A$$]T> () {}
-}");
+            VerifyTrue("""
+                class CL{
+                    void Method<[A$$]T> () {}
+                }
+                """);
         }
 
         [Fact]
         public void MethodParamAttribute()
         {
-            VerifyTrue(@"class CL{
-    void Method ([$$]int i) {}
-}");
+            VerifyTrue("""
+                class CL{
+                    void Method ([$$]int i) {}
+                }
+                """);
         }
 
         [Fact]
@@ -120,9 +132,11 @@ public void UnderNamespace()
         [Fact]
         public void OutsideOfType()
         {
-            VerifyFalse(@"namespace NS {
-class CL {}
-$$");
+            VerifyFalse("""
+                namespace NS {
+                class CL {}
+                $$
+                """);
         }
 
         [Fact]
@@ -140,17 +154,19 @@ public void UsingAlias2()
         [Fact]
         public void IncompleteMember()
         {
-            VerifyTrue(@"class CL {
-    $$
-");
+            VerifyTrue("""
+                class CL {
+                    $$
+                """);
         }
 
         [Fact]
         public void IncompleteMemberAccessibility()
         {
-            VerifyTrue(@"class CL {
-    public $$
-");
+            VerifyTrue("""
+                class CL {
+                    public $$
+                """);
         }
 
         [Fact]
@@ -212,99 +228,127 @@ public void CatchDeclaration()
         [Fact]
         public void FieldDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ i");
+            VerifyTrue("""
+                class CL {
+                    $$ i
+                """);
         }
 
         [Fact]
         public void EventFieldDeclaration()
         {
-            VerifyTrue(@"class CL {
-    event $$");
+            VerifyTrue("""
+                class CL {
+                    event $$
+                """);
         }
 
         [Fact]
         public void ConversionOperatorDeclaration()
         {
-            VerifyTrue(@"class CL {
-    explicit operator $$");
+            VerifyTrue("""
+                class CL {
+                    explicit operator $$
+                """);
         }
 
         [Fact]
         public void ConversionOperatorDeclarationNoToken()
         {
-            VerifyFalse(@"class CL {
-    explicit $$");
+            VerifyFalse("""
+                class CL {
+                    explicit $$
+                """);
         }
 
         [Fact]
         public void PropertyDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ Prop {");
+            VerifyTrue("""
+                class CL {
+                    $$ Prop {
+                """);
         }
 
         [Fact]
         public void EventDeclaration()
         {
-            VerifyTrue(@"class CL {
-    event $$ Event {");
+            VerifyTrue("""
+                class CL {
+                    event $$ Event {
+                """);
         }
 
         [Fact]
         public void IndexerDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ this");
+            VerifyTrue("""
+                class CL {
+                    $$ this
+                """);
         }
 
         [Fact]
         public void Parameter()
         {
-            VerifyTrue(@"class CL {
-    void Method($$");
+            VerifyTrue("""
+                class CL {
+                    void Method($$
+                """);
         }
 
         [Fact]
         public void ArrayType()
         {
-            VerifyTrue(@"class CL {
-    $$ [");
+            VerifyTrue("""
+                class CL {
+                    $$ [
+                """);
         }
 
         [Fact]
         public void PointerType()
         {
-            VerifyTrue(@"class CL {
-    $$ *");
+            VerifyTrue("""
+                class CL {
+                    $$ *
+                """);
         }
 
         [Fact]
         public void NullableType()
         {
-            VerifyTrue(@"class CL {
-    $$ ?");
+            VerifyTrue("""
+                class CL {
+                    $$ ?
+                """);
         }
 
         [Fact]
         public void DelegateDeclaration()
         {
-            VerifyTrue(@"class CL {
-    delegate $$");
+            VerifyTrue("""
+                class CL {
+                    delegate $$
+                """);
         }
 
         [Fact]
         public void MethodDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ M(");
+            VerifyTrue("""
+                class CL {
+                    $$ M(
+                """);
         }
 
         [Fact]
         public void OperatorDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ operator");
+            VerifyTrue("""
+                class CL {
+                    $$ operator
+                """);
         }
 
         [Fact]
@@ -470,9 +514,11 @@ public void SwitchStatement()
         [Fact]
         public void SwitchLabelCase()
         {
-            VerifyTrue(AddInsideMethod(@"switch(i)
-    {
-        case $$"));
+            VerifyTrue(AddInsideMethod("""
+                switch(i)
+                    {
+                        case $$
+                """));
         }
 
         [Fact]
diff --git a/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/TypeContextTests.cs b/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/TypeContextTests.cs
index 9cf0a4ca70f77..88b510b40d988 100644
--- a/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/TypeContextTests.cs
+++ b/src/EditorFeatures/CSharpTest/Extensions/ContextQuery/TypeContextTests.cs
@@ -28,9 +28,11 @@ public void UsingDirective()
         [Fact]
         public void InactiveRegion()
         {
-            VerifyFalse(@"#if false 
-$$
-#endif");
+            VerifyFalse("""
+                #if false 
+                $$
+                #endif
+                """);
         }
 
         [Fact]
@@ -40,9 +42,11 @@ public void SingleLineComment1()
         [Fact]
         public void SingleLineComment2()
         {
-            VerifyTrue(@"class C { 
-//
-$$");
+            VerifyTrue("""
+                class C { 
+                //
+                $$
+                """);
         }
 
         [Fact]
@@ -76,8 +80,10 @@ public void AssemblyAttribute()
         [Fact]
         public void TypeAttribute()
         {
-            VerifyTrue(@"[$$]
-class CL {}");
+            VerifyTrue("""
+                [$$]
+                class CL {}
+                """);
         }
 
         [Fact]
@@ -87,26 +93,32 @@ public void TypeParamAttribute()
         [Fact]
         public void MethodAttribute()
         {
-            VerifyTrue(@"class CL {
-    [$$]
-    void Method() {}
-}");
+            VerifyTrue("""
+                class CL {
+                    [$$]
+                    void Method() {}
+                }
+                """);
         }
 
         [Fact]
         public void MethodTypeParamAttribute()
         {
-            VerifyTrue(@"class CL{
-    void Method<[A$$]T> () {}
-}");
+            VerifyTrue("""
+                class CL{
+                    void Method<[A$$]T> () {}
+                }
+                """);
         }
 
         [Fact]
         public void MethodParamAttribute()
         {
-            VerifyTrue(@"class CL{
-    void Method ([$$]int i) {}
-}");
+            VerifyTrue("""
+                class CL{
+                    void Method ([$$]int i) {}
+                }
+                """);
         }
 
         [Fact]
@@ -120,9 +132,11 @@ public void UnderNamespace()
         [Fact]
         public void OutsideOfType()
         {
-            VerifyFalse(@"namespace NS {
-class CL {}
-$$");
+            VerifyFalse("""
+                namespace NS {
+                class CL {}
+                $$
+                """);
         }
 
         [Fact]
@@ -136,17 +150,19 @@ public void UsingAlias()
         [Fact]
         public void IncompleteMember()
         {
-            VerifyTrue(@"class CL {
-    $$
-");
+            VerifyTrue("""
+                class CL {
+                    $$
+                """);
         }
 
         [Fact]
         public void IncompleteMemberAccessibility()
         {
-            VerifyTrue(@"class CL {
-    public $$
-");
+            VerifyTrue("""
+                class CL {
+                    public $$
+                """);
         }
 
         [Fact]
@@ -208,99 +224,127 @@ public void CatchDeclaration()
         [Fact]
         public void FieldDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ i");
+            VerifyTrue("""
+                class CL {
+                    $$ i
+                """);
         }
 
         [Fact]
         public void EventFieldDeclaration()
         {
-            VerifyTrue(@"class CL {
-    event $$");
+            VerifyTrue("""
+                class CL {
+                    event $$
+                """);
         }
 
         [Fact]
         public void ConversionOperatorDeclaration()
         {
-            VerifyTrue(@"class CL {
-    explicit operator $$");
+            VerifyTrue("""
+                class CL {
+                    explicit operator $$
+                """);
         }
 
         [Fact]
         public void ConversionOperatorDeclarationNoToken()
         {
-            VerifyFalse(@"class CL {
-    explicit $$");
+            VerifyFalse("""
+                class CL {
+                    explicit $$
+                """);
         }
 
         [Fact]
         public void PropertyDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ Prop {");
+            VerifyTrue("""
+                class CL {
+                    $$ Prop {
+                """);
         }
 
         [Fact]
         public void EventDeclaration()
         {
-            VerifyTrue(@"class CL {
-    event $$ Event {");
+            VerifyTrue("""
+                class CL {
+                    event $$ Event {
+                """);
         }
 
         [Fact]
         public void IndexerDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ this");
+            VerifyTrue("""
+                class CL {
+                    $$ this
+                """);
         }
 
         [Fact]
         public void Parameter()
         {
-            VerifyTrue(@"class CL {
-    void Method($$");
+            VerifyTrue("""
+                class CL {
+                    void Method($$
+                """);
         }
 
         [Fact]
         public void ArrayType()
         {
-            VerifyTrue(@"class CL {
-    $$ [");
+            VerifyTrue("""
+                class CL {
+                    $$ [
+                """);
         }
 
         [Fact]
         public void PointerType()
         {
-            VerifyTrue(@"class CL {
-    $$ *");
+            VerifyTrue("""
+                class CL {
+                    $$ *
+                """);
         }
 
         [Fact]
         public void NullableType()
         {
-            VerifyTrue(@"class CL {
-    $$ ?");
+            VerifyTrue("""
+                class CL {
+                    $$ ?
+                """);
         }
 
         [Fact]
         public void DelegateDeclaration()
         {
-            VerifyTrue(@"class CL {
-    delegate $$");
+            VerifyTrue("""
+                class CL {
+                    delegate $$
+                """);
         }
 
         [Fact]
         public void MethodDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ M(");
+            VerifyTrue("""
+                class CL {
+                    $$ M(
+                """);
         }
 
         [Fact]
         public void OperatorDeclaration()
         {
-            VerifyTrue(@"class CL {
-    $$ operator");
+            VerifyTrue("""
+                class CL {
+                    $$ operator
+                """);
         }
 
         [Fact]
@@ -466,9 +510,11 @@ public void SwitchStatement()
         [Fact]
         public void SwitchLabelCase()
         {
-            VerifyTrue(AddInsideMethod(@"switch(i)
-    {
-        case $$"));
+            VerifyTrue(AddInsideMethod("""
+                switch(i)
+                    {
+                        case $$
+                """));
         }
 
         [Fact]
diff --git a/src/EditorFeatures/CSharpTest/Extensions/SyntaxTreeExtensionsTests.cs b/src/EditorFeatures/CSharpTest/Extensions/SyntaxTreeExtensionsTests.cs
index 0868735ab3a71..c8cadaa3b8ce5 100644
--- a/src/EditorFeatures/CSharpTest/Extensions/SyntaxTreeExtensionsTests.cs
+++ b/src/EditorFeatures/CSharpTest/Extensions/SyntaxTreeExtensionsTests.cs
@@ -34,12 +34,13 @@ private static void VerifyWholeLineIsInactive(SyntaxTree tree, int lineNumber)
         [Fact]
         public void SimpleInactive()
         {
-            var code = @"#if false
-This is inactive
-#else
-// This is active
-#endif
-";
+            var code = """
+                #if false
+                This is inactive
+                #else
+                // This is active
+                #endif
+                """;
             var tree = CSharpSyntaxTree.ParseText(code);
             VerifyWholeLineIsActive(tree, 0);
             VerifyWholeLineIsInactive(tree, 1);
@@ -51,9 +52,10 @@ This is inactive
         [Fact]
         public void InactiveEof()
         {
-            var code = @"#if false
-This is inactive
-";
+            var code = """
+                #if false
+                This is inactive
+                """;
             var tree = CSharpSyntaxTree.ParseText(code);
             VerifyWholeLineIsActive(tree, 0);
             VerifyWholeLineIsInactive(tree, 1);
@@ -62,11 +64,12 @@ This is inactive
         [Fact]
         public void InactiveEof2()
         {
-            var code = @"#if false
-This is inactive
-#endif
-// This is active
-";
+            var code = """
+                #if false
+                This is inactive
+                #endif
+                // This is active
+                """;
 
             var tree = CSharpSyntaxTree.ParseText(code);
             VerifyWholeLineIsActive(tree, 0);
diff --git a/src/EditorFeatures/CSharpTest/Formatting/CSharpNewDocumentFormattingServiceTests.cs b/src/EditorFeatures/CSharpTest/Formatting/CSharpNewDocumentFormattingServiceTests.cs
index 0903587e6fce7..08650b137bf05 100644
--- a/src/EditorFeatures/CSharpTest/Formatting/CSharpNewDocumentFormattingServiceTests.cs
+++ b/src/EditorFeatures/CSharpTest/Formatting/CSharpNewDocumentFormattingServiceTests.cs
@@ -24,7 +24,9 @@ public static IEnumerable<object[]> EndOfDocumentSequences
             get
             {
                 yield return new object[] { "" };
-                yield return new object[] { "\r\n" };
+                yield return new object[] { """
+
+                    """ };
             }
         }
 
@@ -35,19 +37,21 @@ protected override TestWorkspace CreateTestWorkspace(string testCode, ParseOptio
         [Fact]
         public async Task TestFileScopedNamespaces()
         {
-            await TestAsync(testCode: @"
-namespace Goo
-{
-    internal class C
-    {
-    }
-}",
-            expected: @"
-namespace Goo;
-
-internal class C
-{
-}",
+            await TestAsync(testCode: """
+                namespace Goo
+                {
+                    internal class C
+                    {
+                    }
+                }
+                """,
+            expected: """
+            namespace Goo;
+
+            internal class C
+            {
+            }
+            """,
             options: new OptionsCollection(LanguageNames.CSharp)
             {
                 { CSharpCodeStyleOptions.NamespaceDeclarations, new CodeStyleOption2<NamespaceDeclarationPreference>(NamespaceDeclarationPreference.FileScoped, NotificationOption2.Error) }
@@ -58,14 +62,15 @@ internal class C
         [Fact]
         public async Task TestFileScopedNamespaces_Invalid_MultipleNamespaces()
         {
-            var testCode = @"
-namespace Goo
-{
-}
+            var testCode = """
+                namespace Goo
+                {
+                }
 
-namespace Bar
-{
-}";
+                namespace Bar
+                {
+                }
+                """;
 
             await TestAsync(
                 testCode: testCode,
@@ -80,13 +85,14 @@ await TestAsync(
         [Fact]
         public async Task TestFileScopedNamespaces_Invalid_WrongLanguageVersion()
         {
-            var testCode = @"
-namespace Goo
-{
-    internal class C
-    {
-    }
-}";
+            var testCode = """
+                namespace Goo
+                {
+                    internal class C
+                    {
+                    }
+                }
+                """;
 
             await TestAsync(
                 testCode: testCode,
@@ -124,9 +130,11 @@ internal class C
         [Fact]
         public async Task TestOrganizeUsingsWithNoUsings()
         {
-            var testCode = @"namespace Goo
-{
-}";
+            var testCode = """
+                namespace Goo
+                {
+                }
+                """;
             await TestAsync(
                 testCode: testCode,
                 expected: testCode,
@@ -139,18 +147,22 @@ await TestAsync(
         [Fact]
         public async Task TestFileBanners()
         {
-            await TestAsync(testCode: @"using System;
+            await TestAsync(testCode: """
+                using System;
 
-namespace Goo
-{
-}",
-            expected: @"// This is a banner.
+                namespace Goo
+                {
+                }
+                """,
+            expected: """
+            // This is a banner.
 
-using System;
+            using System;
 
-namespace Goo
-{
-}",
+            namespace Goo
+            {
+            }
+            """,
             options: new OptionsCollection(LanguageNames.CSharp)
             {
                 { CodeStyleOptions2.FileHeaderTemplate, "This is a banner." }
@@ -160,22 +172,26 @@ namespace Goo
         [Fact]
         public async Task TestAccessibilityModifiers()
         {
-            await TestAsync(testCode: @"using System;
-
-namespace Goo
-{
-    class C
-    {
-    }
-}",
-            expected: @"using System;
+            await TestAsync(testCode: """
+                using System;
 
-namespace Goo
-{
-    internal class C
-    {
-    }
-}",
+                namespace Goo
+                {
+                    class C
+                    {
+                    }
+                }
+                """,
+            expected: """
+            using System;
+
+            namespace Goo
+            {
+                internal class C
+                {
+                }
+            }
+            """,
             options: new OptionsCollection(LanguageNames.CSharp)
             {
                 { CodeStyleOptions2.AccessibilityModifiersRequired, new CodeStyleOption2<AccessibilityModifiersRequired>(AccessibilityModifiersRequired.Always, NotificationOption2.Error) }
@@ -185,20 +201,24 @@ internal class C
         [Fact]
         public async Task TestAccessibilityModifiers_FileScopedNamespace()
         {
-            await TestAsync(testCode: @"using System;
+            await TestAsync(testCode: """
+                using System;
 
-namespace Goo
-{
-    class C
-    {
-    }
-}",
-            expected: @"using System;
-
-namespace Goo;
-internal class C
-{
-}",
+                namespace Goo
+                {
+                    class C
+                    {
+                    }
+                }
+                """,
+            expected: """
+            using System;
+
+            namespace Goo;
+            internal class C
+            {
+            }
+            """,
             options: new OptionsCollection(LanguageNames.CSharp)
             {
                 { CSharpCodeStyleOptions.NamespaceDeclarations, new CodeStyleOption2<NamespaceDeclarationPreference>(NamespaceDeclarationPreference.FileScoped, NotificationOption2.Error) },
@@ -210,38 +230,42 @@ internal class C
         public async Task TestAccessibilityModifiers_IgnoresPartial()
         {
             await TestAsync(
-                testCode: @"using System;
-
-namespace Goo
-{
-    class E
-    {
-    }
-
-    partial class C
-    {
-    }
-
-    class D
-    {
-    }
-}",
-                expected: @"using System;
-
-namespace Goo
-{
-    internal class E
-    {
-    }
-
-    partial class C
-    {
-    }
+                testCode: """
+                using System;
 
-    internal class D
-    {
-    }
-}",
+                namespace Goo
+                {
+                    class E
+                    {
+                    }
+
+                    partial class C
+                    {
+                    }
+
+                    class D
+                    {
+                    }
+                }
+                """,
+                expected: """
+                using System;
+
+                namespace Goo
+                {
+                    internal class E
+                    {
+                    }
+
+                    partial class C
+                    {
+                    }
+
+                    internal class D
+                    {
+                    }
+                }
+                """,
                 options: new OptionsCollection(LanguageNames.CSharp)
                 {
                     { CodeStyleOptions2.AccessibilityModifiersRequired, new CodeStyleOption2<AccessibilityModifiersRequired>(AccessibilityModifiersRequired.Always, NotificationOption2.Error) }
@@ -251,15 +275,19 @@ internal class D
         [Fact]
         public async Task TestUsingDirectivePlacement()
         {
-            await TestAsync(testCode: @"using System;
+            await TestAsync(testCode: """
+                using System;
 
-namespace Goo
-{
-}",
-            expected: @"namespace Goo
-{
-    using System;
-}",
+                namespace Goo
+                {
+                }
+                """,
+            expected: """
+            namespace Goo
+            {
+                using System;
+            }
+            """,
             options: new OptionsCollection(LanguageNames.CSharp)
             {
                 { CSharpCodeStyleOptions.PreferredUsingDirectivePlacement, new CodeStyleOption2<AddImportPlacement>(AddImportPlacement.InsideNamespace, NotificationOption2.Error) }
@@ -269,14 +297,18 @@ namespace Goo
         [Fact]
         public async Task TestPreferTopLevelStatements()
         {
-            await TestAsync(testCode: @"using System;
-
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine(""Hello, World!"");",
-            expected: @"using System;
-
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine(""Hello, World!"");",
+            await TestAsync(testCode: """
+                using System;
+
+                // See https://aka.ms/new-console-template for more information
+                Console.WriteLine("Hello, World!");
+                """,
+            expected: """
+            using System;
+
+            // See https://aka.ms/new-console-template for more information
+            Console.WriteLine("Hello, World!");
+            """,
             options: new OptionsCollection(LanguageNames.CSharp)
             {
                 { CSharpCodeStyleOptions.PreferTopLevelStatements, new CodeStyleOption2<bool>(value: true, notification: NotificationOption2.Suggestion) }
@@ -286,19 +318,23 @@ public async Task TestPreferTopLevelStatements()
         [Fact]
         public async Task TestPreferProgramMain()
         {
-            await TestAsync(testCode: @"using System;
+            await TestAsync(testCode: """
+                using System;
 
-// See https://aka.ms/new-console-template for more information
-Console.WriteLine(""Hello, World!"");",
-            expected: @"using System;
+                // See https://aka.ms/new-console-template for more information
+                Console.WriteLine("Hello, World!");
+                """,
+            expected: """
+            using System;
 
-internal class Program
-{
-    private static void Main(string[] args)
-    {
-        Console.WriteLine(""Hello, World!"");
-    }
-}",
+            internal class Program
+            {
+                private static void Main(string[] args)
+                {
+                    Console.WriteLine("Hello, World!");
+                }
+            }
+            """,
             options: new OptionsCollection(LanguageNames.CSharp)
             {
                 { CSharpCodeStyleOptions.PreferTopLevelStatements, new CodeStyleOption2<bool>(value: false, notification: NotificationOption2.Suggestion) }
diff --git a/src/EditorFeatures/CSharpTest/Formatting/CodeCleanupTests.cs b/src/EditorFeatures/CSharpTest/Formatting/CodeCleanupTests.cs
index 4712ff5621d08..5e0c52e5c0967 100644
--- a/src/EditorFeatures/CSharpTest/Formatting/CodeCleanupTests.cs
+++ b/src/EditorFeatures/CSharpTest/Formatting/CodeCleanupTests.cs
@@ -45,290 +45,308 @@ public partial class CodeCleanupTests
         [Fact]
         public Task RemoveUsings()
         {
-            var code = @"using System;
-using System.Collections.Generic;
-class Program
-{
-    static void Main(string[] args)
-    {
-        Console.WriteLine();
-    }
-}
-";
+            var code = """
+                using System;
+                using System.Collections.Generic;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Console.WriteLine();
+                    }
+                }
+                """;
 
-            var expected = @"using System;
+            var expected = """
+                using System;
 
-internal class Program
-{
-    private static void Main(string[] args)
-    {
-        Console.WriteLine();
-    }
-}
-";
+                internal class Program
+                {
+                    private static void Main(string[] args)
+                    {
+                        Console.WriteLine();
+                    }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code);
         }
 
         [Fact]
         public Task SortUsings()
         {
-            var code = @"using System.Collections.Generic;
-using System;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var list = new List<int>();
-        Console.WriteLine(list.Count);
-    }
-}
-";
+            var code = """
+                using System.Collections.Generic;
+                using System;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var list = new List<int>();
+                        Console.WriteLine(list.Count);
+                    }
+                }
+                """;
 
-            var expected = @"using System;
-using System.Collections.Generic;
+            var expected = """
+                using System;
+                using System.Collections.Generic;
 
-internal class Program
-{
-    private static void Main(string[] args)
-    {
-        List<int> list = new();
-        Console.WriteLine(list.Count);
-    }
-}
-";
+                internal class Program
+                {
+                    private static void Main(string[] args)
+                    {
+                        List<int> list = new();
+                        Console.WriteLine(list.Count);
+                    }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code);
         }
 
         [Fact]
         public Task SortGlobalUsings()
         {
-            var code = @"using System.Threading.Tasks;
-using System.Threading;
-global using System.Collections.Generic;
-global using System;
-class Program
-{
-    static Task Main(string[] args)
-    {
-        Barrier b = new Barrier(0);
-        var list = new List<int>();
-        Console.WriteLine(list.Count);
-        b.Dispose();
-    }
-}
-";
+            var code = """
+                using System.Threading.Tasks;
+                using System.Threading;
+                global using System.Collections.Generic;
+                global using System;
+                class Program
+                {
+                    static Task Main(string[] args)
+                    {
+                        Barrier b = new Barrier(0);
+                        var list = new List<int>();
+                        Console.WriteLine(list.Count);
+                        b.Dispose();
+                    }
+                }
+                """;
 
-            var expected = @"global using System;
-global using System.Collections.Generic;
-using System.Threading;
-using System.Threading.Tasks;
+            var expected = """
+                global using System;
+                global using System.Collections.Generic;
+                using System.Threading;
+                using System.Threading.Tasks;
 
-internal class Program
-{
-    private static Task Main(string[] args)
-    {
-        Barrier b = new(0);
-        List<int> list = new();
-        Console.WriteLine(list.Count);
-        b.Dispose();
-    }
-}
-";
+                internal class Program
+                {
+                    private static Task Main(string[] args)
+                    {
+                        Barrier b = new(0);
+                        List<int> list = new();
+                        Console.WriteLine(list.Count);
+                        b.Dispose();
+                    }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36984")]
         public Task GroupUsings()
         {
-            var code = @"using M;
-using System;
+            var code = """
+                using M;
+                using System;
 
-internal class Program
-{
-    private static void Main(string[] args)
-    {
-        Console.WriteLine(""Hello World!"");
+                internal class Program
+                {
+                    private static void Main(string[] args)
+                    {
+                        Console.WriteLine("Hello World!");
 
-        new Goo();
-    }
-}
+                        new Goo();
+                    }
+                }
 
-namespace M
-{
-    public class Goo { }
-}
-";
+                namespace M
+                {
+                    public class Goo { }
+                }
+                """;
 
-            var expected = @"using M;
+            var expected = """
+                using M;
 
-using System;
+                using System;
 
-internal class Program
-{
-    private static void Main(string[] args)
-    {
-        Console.WriteLine(""Hello World!"");
+                internal class Program
+                {
+                    private static void Main(string[] args)
+                    {
+                        Console.WriteLine("Hello World!");
 
-        _ = new Goo();
-    }
-}
+                        _ = new Goo();
+                    }
+                }
 
-namespace M
-{
-    public class Goo { }
-}
-";
+                namespace M
+                {
+                    public class Goo { }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code, systemUsingsFirst: false, separateUsingGroups: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/36984")]
         public Task SortAndGroupUsings()
         {
-            var code = @"using M;
-using System;
+            var code = """
+                using M;
+                using System;
 
-internal class Program
-{
-    private static void Main(string[] args)
-    {
-        Console.WriteLine(""Hello World!"");
+                internal class Program
+                {
+                    private static void Main(string[] args)
+                    {
+                        Console.WriteLine("Hello World!");
 
-        new Goo();
-    }
-}
+                        new Goo();
+                    }
+                }
 
-namespace M
-{
-    public class Goo { }
-}
-";
+                namespace M
+                {
+                    public class Goo { }
+                }
+                """;
 
-            var expected = @"using System;
+            var expected = """
+                using System;
 
-using M;
+                using M;
 
-internal class Program
-{
-    private static void Main(string[] args)
-    {
-        Console.WriteLine(""Hello World!"");
+                internal class Program
+                {
+                    private static void Main(string[] args)
+                    {
+                        Console.WriteLine("Hello World!");
 
-        _ = new Goo();
-    }
-}
+                        _ = new Goo();
+                    }
+                }
 
-namespace M
-{
-    public class Goo { }
-}
-";
+                namespace M
+                {
+                    public class Goo { }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code, systemUsingsFirst: true, separateUsingGroups: true);
         }
 
         [Fact]
         public Task FixAddRemoveBraces()
         {
-            var code = @"class Program
-{
-    int Method()
-    {
-        int a = 0;
-        if (a > 0)
-            a ++;
-
-        return a;
-    }
-}
-";
-            var expected = @"internal class Program
-{
-    private int Method()
-    {
-        int a = 0;
-        if (a > 0)
-        {
-            a++;
-        }
-
-        return a;
-    }
-}
-";
+            var code = """
+                class Program
+                {
+                    int Method()
+                    {
+                        int a = 0;
+                        if (a > 0)
+                            a ++;
+
+                        return a;
+                    }
+                }
+                """;
+            var expected = """
+                internal class Program
+                {
+                    private int Method()
+                    {
+                        int a = 0;
+                        if (a > 0)
+                        {
+                            a++;
+                        }
+
+                        return a;
+                    }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code);
         }
 
         [Fact]
         public Task RemoveUnusedVariable()
         {
-            var code = @"class Program
-{
-    void Method()
-    {
-        int a;
-    }
-}
-";
-            var expected = @"internal class Program
-{
-    private void Method()
-    {
-    }
-}
-";
+            var code = """
+                class Program
+                {
+                    void Method()
+                    {
+                        int a;
+                    }
+                }
+                """;
+            var expected = """
+                internal class Program
+                {
+                    private void Method()
+                    {
+                    }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code);
         }
 
         [Fact]
         public Task FixAccessibilityModifiers()
         {
-            var code = @"class Program
-{
-    void Method()
-    {
-        int a;
-    }
-}
-";
-            var expected = @"internal class Program
-{
-    private void Method()
-    {
-    }
-}
-";
+            var code = """
+                class Program
+                {
+                    void Method()
+                    {
+                        int a;
+                    }
+                }
+                """;
+            var expected = """
+                internal class Program
+                {
+                    private void Method()
+                    {
+                    }
+                }
+                """;
             return AssertCodeCleanupResult(expected, code);
         }
 
         [Fact]
         public Task FixUsingPlacementPreferOutside()
         {
-            var code = @"namespace A
-{
-    using System;
-
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-        }
-    }
-}
-";
+            var code = """
+                namespace A
+                {
+                    using System;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                        }
+                    }
+                }
+                """;
 
-            var expected = @"using System;
+            var expected = """
+                using System;
 
-namespace A
-{
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-        }
-    }
-}
-";
+                namespace A
+                {
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                        }
+                    }
+                }
+                """;
 
             return AssertCodeCleanupResult(expected, code);
         }
@@ -336,33 +354,35 @@ private void Method()
         [Fact]
         public Task FixUsingPlacementPreferInside()
         {
-            var code = @"using System;
-
-namespace A
-{
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-        }
-    }
-}
-";
+            var code = """
+                using System;
 
-            var expected = @"namespace A
-{
-    using System;
+                namespace A
+                {
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                        }
+                    }
+                }
+                """;
 
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-        }
-    }
-}
-";
+            var expected = """
+                namespace A
+                {
+                    using System;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                        }
+                    }
+                }
+                """;
 
             return AssertCodeCleanupResult(expected, code, InsideNamespaceOption);
         }
@@ -370,19 +390,20 @@ private void Method()
         [Fact]
         public Task FixUsingPlacementPreferInsidePreserve()
         {
-            var code = @"using System;
+            var code = """
+                using System;
 
-namespace A
-{
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-        }
-    }
-}
-";
+                namespace A
+                {
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                        }
+                    }
+                }
+                """;
 
             var expected = code;
 
@@ -392,19 +413,20 @@ private void Method()
         [Fact]
         public Task FixUsingPlacementPreferOutsidePreserve()
         {
-            var code = @"namespace A
-{
-    using System;
-
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-        }
-    }
-}
-";
+            var code = """
+                namespace A
+                {
+                    using System;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                        }
+                    }
+                }
+                """;
 
             var expected = code;
 
@@ -414,40 +436,42 @@ private void Method()
         [Fact]
         public Task FixUsingPlacementMixedPreferOutside()
         {
-            var code = @"using System;
+            var code = """
+                using System;
 
-namespace A
-{
-    using System.Collections.Generic;
-    
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-            List<int> list = new List<int>();
-            Console.WriteLine(list.Length);
-        }
-    }
-}
-";
+                namespace A
+                {
+                    using System.Collections.Generic;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                            List<int> list = new List<int>();
+                            Console.WriteLine(list.Length);
+                        }
+                    }
+                }
+                """;
 
-            var expected = @"using System;
-using System.Collections.Generic;
+            var expected = """
+                using System;
+                using System.Collections.Generic;
 
-namespace A
-{
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-            List<int> list = [];
-            Console.WriteLine(list.Length);
-        }
-    }
-}
-";
+                namespace A
+                {
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                            List<int> list = [];
+                            Console.WriteLine(list.Length);
+                        }
+                    }
+                }
+                """;
 
             return AssertCodeCleanupResult(expected, code, OutsideNamespaceOption);
         }
@@ -455,41 +479,42 @@ private void Method()
         [Fact]
         public Task FixUsingPlacementMixedPreferInside()
         {
-            var code = @"using System;
-
-namespace A
-{
-    using System.Collections.Generic;
-    
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-            List<int> list = new();
-            Console.WriteLine(list.Length);
-        }
-    }
-}
-";
-
-            var expected = @"namespace A
-{
-    using System;
-    using System.Collections.Generic;
+            var code = """
+                using System;
 
+                namespace A
+                {
+                    using System.Collections.Generic;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                            List<int> list = new();
+                            Console.WriteLine(list.Length);
+                        }
+                    }
+                }
+                """;
 
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-            List<int> list = [];
-            Console.WriteLine(list.Length);
-        }
-    }
-}
-";
+            var expected = """
+                namespace A
+                {
+                    using System;
+                    using System.Collections.Generic;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                            List<int> list = [];
+                            Console.WriteLine(list.Length);
+                        }
+                    }
+                }
+                """;
 
             return AssertCodeCleanupResult(expected, code, InsideNamespaceOption);
         }
@@ -497,23 +522,24 @@ private void Method()
         [Fact]
         public Task FixUsingPlacementMixedPreferInsidePreserve()
         {
-            var code = @"using System;
+            var code = """
+                using System;
 
-namespace A
-{
-    using System.Collections.Generic;
-
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-            List<int> list = [];
-            Console.WriteLine(list.Length);
-        }
-    }
-}
-";
+                namespace A
+                {
+                    using System.Collections.Generic;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                            List<int> list = [];
+                            Console.WriteLine(list.Length);
+                        }
+                    }
+                }
+                """;
 
             var expected = code;
 
@@ -523,23 +549,24 @@ private void Method()
         [Fact]
         public Task FixUsingPlacementMixedPreferOutsidePreserve()
         {
-            var code = @"using System;
+            var code = """
+                using System;
 
-namespace A
-{
-    using System.Collections.Generic;
-
-    internal class Program
-    {
-        private void Method()
-        {
-            Console.WriteLine();
-            List<int> list = [];
-            Console.WriteLine(list.Length);
-        }
-    }
-}
-";
+                namespace A
+                {
+                    using System.Collections.Generic;
+
+                    internal class Program
+                    {
+                        private void Method()
+                        {
+                            Console.WriteLine();
+                            List<int> list = [];
+                            Console.WriteLine(list.Length);
+                        }
+                    }
+                }
+                """;
 
             var expected = code;
 
@@ -571,96 +598,96 @@ public void VerifyAllCodeStyleFixersAreSupportedByCodeCleanup(string language)
             Assert.Equal(expectedNumberOfUnsupportedDiagnosticIds, unsupportedDiagnosticIds.Length);
         }
 
-        private const string _code = @"
-class C
-{
-    public void M1(int x, int y)
-    {
-        switch (x)
-        {
-            case 1:
-            case 10:
-                break;
-            default:
-                break;
-        }
-
-        switch (y)
-        {
-            case 1:
-                break;
-            case 1000:
-            default:
-                break;
-        }
-
-        switch (x)
-        {
-            case 1:
-                break;
-            case 1000:
-                break;
-        }
-
-        switch (y)
-        {
-            default:
-                break;
-        }
-
-        switch (y) { }
-
-        switch (x)
-        {
-            case :
-            case 1000:
-                break;
-        }
-    }
-}
-";
-
-        private const string _fixed = @"
-class C
-{
-    public void M1(int x, int y)
-    {
-        switch (x)
-        {
-            case 1:
-            case 10:
-                break;
-        }
-
-        switch (y)
-        {
-            case 1:
-                break;
-        }
-
-        switch (x)
-        {
-            case 1:
-                break;
-            case 1000:
-                break;
-        }
-
-        switch (y)
-        {
-        }
-
-        switch (y) { }
+        private const string _code = """
+            class C
+            {
+                public void M1(int x, int y)
+                {
+                    switch (x)
+                    {
+                        case 1:
+                        case 10:
+                            break;
+                        default:
+                            break;
+                    }
+
+                    switch (y)
+                    {
+                        case 1:
+                            break;
+                        case 1000:
+                        default:
+                            break;
+                    }
+
+                    switch (x)
+                    {
+                        case 1:
+                            break;
+                        case 1000:
+                            break;
+                    }
+
+                    switch (y)
+                    {
+                        default:
+                            break;
+                    }
+
+                    switch (y) { }
+
+                    switch (x)
+                    {
+                        case :
+                        case 1000:
+                            break;
+                    }
+                }
+            }
+            """;
 
-        switch (x)
-        {
-            case :
-            case 1000:
-                break;
-        }
-    }
-}
-";
+        private const string _fixed = """
+            class C
+            {
+                public void M1(int x, int y)
+                {
+                    switch (x)
+                    {
+                        case 1:
+                        case 10:
+                            break;
+                    }
+
+                    switch (y)
+                    {
+                        case 1:
+                            break;
+                    }
+
+                    switch (x)
+                    {
+                        case 1:
+                            break;
+                        case 1000:
+                            break;
+                    }
+
+                    switch (y)
+                    {
+                    }
+
+                    switch (y) { }
+
+                    switch (x)
+                    {
+                        case :
+                        case 1000:
+                            break;
+                    }
+                }
+            }
+            """;
 
         [Fact]
         public async Task RunThirdPartyFixer()
diff --git a/src/EditorFeatures/CSharpTest/Formatting/FormattingEngineTests_Venus.cs b/src/EditorFeatures/CSharpTest/Formatting/FormattingEngineTests_Venus.cs
index 9479b9d21c69d..2d95f042ad492 100644
--- a/src/EditorFeatures/CSharpTest/Formatting/FormattingEngineTests_Venus.cs
+++ b/src/EditorFeatures/CSharpTest/Formatting/FormattingEngineTests_Venus.cs
@@ -19,27 +19,31 @@ public FormattingEngineTests_Venus(ITestOutputHelper output) : base(output) { }
         [WpfFact, Trait(Traits.Feature, Traits.Features.Formatting), Trait(Traits.Feature, Traits.Features.Venus)]
         public async Task SimpleOneLineNugget()
         {
-            var code = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1[|
-int x=1 ;
-|]#line hidden
-#line default
-    }
-}";
-
-            var expected = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1
-           int x = 1;
-#line hidden
-#line default
-}
-}";
+            var code = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1[|
+                int x=1 ;
+                |]#line hidden
+                #line default
+                    }
+                }
+                """;
+
+            var expected = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1
+                           int x = 1;
+                #line hidden
+                #line default
+                }
+                }
+                """;
 
             await AssertFormatWithBaseIndentAsync(expected, code, baseIndentation: 7);
         }
@@ -47,32 +51,36 @@ void PreRender()
         [WpfFact, Trait(Traits.Feature, Traits.Features.Formatting), Trait(Traits.Feature, Traits.Features.Venus)]
         public async Task SimpleMultiLineNugget()
         {
-            var code = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1[|
-if(true)
-{
-Console.WriteLine(5);}
-|]#line hidden
-#line default
-    }
-}";
-
-            var expected = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1
-       if (true)
-       {
-           Console.WriteLine(5);
-       }
-#line hidden
-#line default
-}
-}";
+            var code = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1[|
+                if(true)
+                {
+                Console.WriteLine(5);}
+                |]#line hidden
+                #line default
+                    }
+                }
+                """;
+
+            var expected = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1
+                       if (true)
+                       {
+                           Console.WriteLine(5);
+                       }
+                #line hidden
+                #line default
+                }
+                }
+                """;
 
             await AssertFormatWithBaseIndentAsync(expected, code, baseIndentation: 3);
         }
@@ -80,33 +88,37 @@ void PreRender()
         [WpfFact, Trait(Traits.Feature, Traits.Features.Formatting), Trait(Traits.Feature, Traits.Features.Venus)]
         public async Task SimpleQueryWithinNugget()
         {
-            var code = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1[|
-int[] numbers = {  5,  4,  1  };
-var even =  from     n      in  numbers
-                   where  n %   2 ==   0
-                          select    n;
-|]#line hidden
-#line default
-    }
-}";
-
-            var expected = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1
-           int[] numbers = { 5, 4, 1 };
-           var even = from n in numbers
-                      where n % 2 == 0
-                      select n;
-#line hidden
-#line default
-}
-}";
+            var code = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1[|
+                int[] numbers = {  5,  4,  1  };
+                var even =  from     n      in  numbers
+                                   where  n %   2 ==   0
+                                          select    n;
+                |]#line hidden
+                #line default
+                    }
+                }
+                """;
+
+            var expected = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1
+                           int[] numbers = { 5, 4, 1 };
+                           var even = from n in numbers
+                                      where n % 2 == 0
+                                      select n;
+                #line hidden
+                #line default
+                }
+                }
+                """;
 
             await AssertFormatWithBaseIndentAsync(expected, code, baseIndentation: 7);
         }
@@ -114,33 +126,37 @@ void PreRender()
         [WpfFact, Trait(Traits.Feature, Traits.Features.Formatting), Trait(Traits.Feature, Traits.Features.Venus)]
         public async Task LambdaExpressionInNugget()
         {
-            var code = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1[|
-int[] source = new [] {   3,   8, 4,   6, 1, 7, 9, 2, 4, 8} ;
- 
-foreach(int i   in source.Where(x  =>  x  > 5))
-    Console.WriteLine(i);
-|]#line hidden
-#line default
-    }
-}";
-
-            var expected = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1
-       int[] source = new[] { 3, 8, 4, 6, 1, 7, 9, 2, 4, 8 };
-
-       foreach (int i in source.Where(x => x > 5))
-           Console.WriteLine(i);
-#line hidden
-#line default
-}
-}";
+            var code = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1[|
+                int[] source = new [] {   3,   8, 4,   6, 1, 7, 9, 2, 4, 8} ;
+
+                foreach(int i   in source.Where(x  =>  x  > 5))
+                    Console.WriteLine(i);
+                |]#line hidden
+                #line default
+                    }
+                }
+                """;
+
+            var expected = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1
+                       int[] source = new[] { 3, 8, 4, 6, 1, 7, 9, 2, 4, 8 };
+
+                       foreach (int i in source.Where(x => x > 5))
+                           Console.WriteLine(i);
+                #line hidden
+                #line default
+                }
+                }
+                """;
 
             await AssertFormatWithBaseIndentAsync(expected, code, baseIndentation: 3);
         }
@@ -149,51 +165,55 @@ void PreRender()
         [WpfFact, Trait(Traits.Feature, Traits.Features.Formatting), Trait(Traits.Feature, Traits.Features.Venus)]
         public async Task StatementLambdaInNugget()
         {
-            var code = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1[|
-       int[] source = new[] { 3, 8, 4, 6, 1, 7, 9, 2, 4, 8 };
-
-    foreach (int i in source.Where(
-           x   =>
-           { 
-                if (x <= 3)
-    return true;
-                   else if (x >= 7)
-           return true;
-                   return false;
-               }
-       ))
-            Console.WriteLine(i);
-|]#line hidden
-#line default
-    }
-}";
-
-            var expected = @"public class Default
-{
-    void PreRender()
-    {
-#line ""Goo.aspx"", 1
-       int[] source = new[] { 3, 8, 4, 6, 1, 7, 9, 2, 4, 8 };
-
-       foreach (int i in source.Where(
-              x =>
-              {
-                  if (x <= 3)
-                      return true;
-                  else if (x >= 7)
-                      return true;
-                  return false;
-              }
-          ))
-           Console.WriteLine(i);
-#line hidden
-#line default
-}
-}";
+            var code = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1[|
+                       int[] source = new[] { 3, 8, 4, 6, 1, 7, 9, 2, 4, 8 };
+
+                    foreach (int i in source.Where(
+                           x   =>
+                           { 
+                                if (x <= 3)
+                    return true;
+                                   else if (x >= 7)
+                           return true;
+                                   return false;
+                               }
+                       ))
+                            Console.WriteLine(i);
+                |]#line hidden
+                #line default
+                    }
+                }
+                """;
+
+            var expected = """
+                public class Default
+                {
+                    void PreRender()
+                    {
+                #line "Goo.aspx", 1
+                       int[] source = new[] { 3, 8, 4, 6, 1, 7, 9, 2, 4, 8 };
+
+                       foreach (int i in source.Where(
+                              x =>
+                              {
+                                  if (x <= 3)
+                                      return true;
+                                  else if (x >= 7)
+                                      return true;
+                                  return false;
+                              }
+                          ))
+                           Console.WriteLine(i);
+                #line hidden
+                #line default
+                }
+                }
+                """;
 
             // It is somewhat odd that the 'x' and the ')' maintain their
             // position relative to 'foreach', but the block doesn't, but that isn't
diff --git a/src/EditorFeatures/CSharpTest/Formatting/Indentation/CSharpFormatterTestsBase.cs b/src/EditorFeatures/CSharpTest/Formatting/Indentation/CSharpFormatterTestsBase.cs
index 3bc93fe9871ec..8f9c5f507195f 100644
--- a/src/EditorFeatures/CSharpTest/Formatting/Indentation/CSharpFormatterTestsBase.cs
+++ b/src/EditorFeatures/CSharpTest/Formatting/Indentation/CSharpFormatterTestsBase.cs
@@ -39,11 +39,13 @@ public class CSharpFormatterTestsBase : CSharpFormattingEngineTestBase
 
         public CSharpFormatterTestsBase(ITestOutputHelper output) : base(output) { }
 
-        protected const string HtmlMarkup = @"<html>
-    <body>
-        <%{|S1:|}%>
-    </body>
-</html>";
+        protected const string HtmlMarkup = """
+            <html>
+                <body>
+                    <%{|S1:|}%>
+                </body>
+            </html>
+            """;
         protected const int BaseIndentationOfNugget = 8;
 
         protected static async Task<int> GetSmartTokenFormatterIndentationWorkerAsync(
diff --git a/src/EditorFeatures/CSharpTest/Formatting/Indentation/SmartIndenterTests_Performance.cs b/src/EditorFeatures/CSharpTest/Formatting/Indentation/SmartIndenterTests_Performance.cs
index aabe30eee6c76..4878602a10378 100644
--- a/src/EditorFeatures/CSharpTest/Formatting/Indentation/SmartIndenterTests_Performance.cs
+++ b/src/EditorFeatures/CSharpTest/Formatting/Indentation/SmartIndenterTests_Performance.cs
@@ -19,2196 +19,2196 @@ public void RegionPerformance()
         {
             var code =
             #region very long sample code
- @"using System;
-using System.Collections.Generic;
+ """
+ using System;
+ using System.Collections.Generic;
 
-class Class1
-{
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ class Class1
+ {
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }
-    #endregion
-    };
-#endif
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }
+     #endregion
+     };
+ #endif
 
-#if (false && Var1)
-    Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
-    #region Region 1
-        {
-            1,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 2
-        {
-            2,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 3
-        {
-            3,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 4
-        {
-            4,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 5
-        {
-            5,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 6
-        {
-            6,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 7
-        {
-            7,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 8
-        {
-           8,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 9
-        {
-            9,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        },
-    #endregion
-    #region Region 10
-        {
-            10,
-            new List<string>()
-            {
-                ""a"",
-                ""b"",
-                ""c"",
-                ""d"",
-                ""e"",
-                ""f""
-            }
-        }$$
-    
-    #endregion
-    };
-#endif
-}
+ #if (false && Var1)
+     Dictionary<int, List<string>> x = new Dictionary<int, List<string>>() {
+     #region Region 1
+         {
+             1,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 2
+         {
+             2,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 3
+         {
+             3,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 4
+         {
+             4,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 5
+         {
+             5,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 6
+         {
+             6,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 7
+         {
+             7,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 8
+         {
+            8,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 9
+         {
+             9,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         },
+     #endregion
+     #region Region 10
+         {
+             10,
+             new List<string>()
+             {
+                 "a",
+                 "b",
+                 "c",
+                 "d",
+                 "e",
+                 "f"
+             }
+         }$$
 
-class Program
-{
-    static void Main()
-    {
-    }
-}
+     #endregion
+     };
+ #endif
+ }
 
-";
+ class Program
+ {
+     static void Main()
+     {
+     }
+ }
+ """;
             #endregion
 
             AssertSmartIndent(
diff --git a/src/EditorFeatures/CSharpTest/GoToAdjacentMember/CSharpGoToAdjacentMemberTests.cs b/src/EditorFeatures/CSharpTest/GoToAdjacentMember/CSharpGoToAdjacentMemberTests.cs
index fc971d9568623..4211a0395e80d 100644
--- a/src/EditorFeatures/CSharpTest/GoToAdjacentMember/CSharpGoToAdjacentMemberTests.cs
+++ b/src/EditorFeatures/CSharpTest/GoToAdjacentMember/CSharpGoToAdjacentMemberTests.cs
@@ -29,21 +29,25 @@ public async Task EmptyFile()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task ClassWithNoMembers()
         {
-            var code = @"class C
-{
-$$
-}";
+            var code = """
+                class C
+                {
+                $$
+                }
+                """;
             Assert.Null(await GetTargetPositionAsync(code, next: true));
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task BeforeClassWithMember()
         {
-            var code = @"$$
-class C
-{
-    [||]void M() { }
-}";
+            var code = """
+                $$
+                class C
+                {
+                    [||]void M() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -51,13 +55,14 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task AfterClassWithMember()
         {
-            var code = @"
-class C
-{
-    [||]void M() { }
-}
+            var code = """
+                class C
+                {
+                    [||]void M() { }
+                }
 
-$$";
+                $$
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -65,18 +70,19 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task BetweenClasses()
         {
-            var code = @"
-class C1
-{
-    void M() { }
-}
+            var code = """
+                class C1
+                {
+                    void M() { }
+                }
 
-$$
+                $$
 
-class C2
-{
-    [||]void M() { }
-} ";
+                class C2
+                {
+                    [||]void M() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -84,18 +90,19 @@ class C2
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task BetweenClassesPrevious()
         {
-            var code = @"
-class C1
-{
-    [||]void M() { }
-}
+            var code = """
+                class C1
+                {
+                    [||]void M() { }
+                }
 
-$$
+                $$
 
-class C2
-{
-    void M() { }
-} ";
+                class C2
+                {
+                    void M() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: false);
         }
@@ -103,12 +110,13 @@ void M() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task FromFirstMemberToSecond()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]void M2() { }
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -116,12 +124,13 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task FromSecondToFirst()
         {
-            var code = @"
-class C
-{
-    [||]void M1() { }
-    $$void M2() { }
-}";
+            var code = """
+                class C
+                {
+                    [||]void M1() { }
+                    $$void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: false);
         }
@@ -129,12 +138,13 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task NextWraps()
         {
-            var code = @"
-class C
-{
-    [||]void M1() { }
-    $$void M2() { }
-}";
+            var code = """
+                class C
+                {
+                    [||]void M1() { }
+                    $$void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -142,12 +152,13 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task PreviousWraps()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]void M2() { }
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: false);
         }
@@ -155,16 +166,17 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task DescendsIntoNestedType()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
+            var code = """
+                class C
+                {
+                    $$void M1() { }
 
-    class N
-    {
-        [||]void M2() { }
-    }
-}";
+                    class N
+                    {
+                        [||]void M2() { }
+                    }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -172,88 +184,95 @@ class N
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtConstructor()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]public C() { }
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]public C() { }
+                }
+                """;
             await AssertNavigatedAsync(code, next: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtDestructor()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]~C() { }
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]~C() { }
+                }
+                """;
             await AssertNavigatedAsync(code, next: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtOperator()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]static C operator+(C left, C right) { throw new System.NotImplementedException(); }
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]static C operator+(C left, C right) { throw new System.NotImplementedException(); }
+                }
+                """;
             await AssertNavigatedAsync(code, next: true);
         }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtField()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]int F;
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]int F;
+                }
+                """;
             await AssertNavigatedAsync(code, next: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtFieldlikeEvent()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]event System.EventHandler E;
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]event System.EventHandler E;
+                }
+                """;
             await AssertNavigatedAsync(code, next: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtAutoProperty()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
-    [||]int P { get; set ; }
-}";
+            var code = """
+                class C
+                {
+                    $$void M1() { }
+                    [||]int P { get; set ; }
+                }
+                """;
             await AssertNavigatedAsync(code, next: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtPropertyWithAccessors()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
+            var code = """
+                class C
+                {
+                    $$void M1() { }
 
-    [||]int P
-    {
-        get { return 42; }
-        set { }
-    }
-}";
+                    [||]int P
+                    {
+                        get { return 42; }
+                        set { }
+                    }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -261,19 +280,20 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task SkipsPropertyAccessors()
         {
-            var code = @"
-class C
-{
-    void M1() { }
+            var code = """
+                class C
+                {
+                    void M1() { }
 
-    $$int P
-    {
-        get { return 42; }
-        set { }
-    }
+                    $$int P
+                    {
+                        get { return 42; }
+                        set { }
+                    }
 
-    [||]void M2() { }
-}";
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -281,19 +301,20 @@ void M1() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task FromInsideAccessor()
         {
-            var code = @"
-class C
-{
-    void M1() { }
+            var code = """
+                class C
+                {
+                    void M1() { }
 
-    int P
-    {
-        get { return $$42; }
-        set { }
-    }
+                    int P
+                    {
+                        get { return $$42; }
+                        set { }
+                    }
 
-    [||]void M2() { }
-}";
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -301,17 +322,18 @@ int P
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtIndexerWithAccessors()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
+            var code = """
+                class C
+                {
+                    $$void M1() { }
 
-    [||]int this[int i]
-    {
-        get { return 42; }
-        set { }
-    }
-}";
+                    [||]int this[int i]
+                    {
+                        get { return 42; }
+                        set { }
+                    }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -319,19 +341,20 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task SkipsIndexerAccessors()
         {
-            var code = @"
-class C
-{
-    void M1() { }
+            var code = """
+                class C
+                {
+                    void M1() { }
 
-    $$int this[int i]
-    {
-        get { return 42; }
-        set { }
-    }
+                    $$int this[int i]
+                    {
+                        get { return 42; }
+                        set { }
+                    }
 
-    [||]void M2() { }
-}";
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -339,17 +362,18 @@ void M1() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtEventWithAddRemove()
         {
-            var code = @"
-class C
-{
-    $$void M1() { }
+            var code = """
+                class C
+                {
+                    $$void M1() { }
 
-    [||]event EventHandler E
-    {
-        add { }
-        remove { }
-    }
-}";
+                    [||]event EventHandler E
+                    {
+                        add { }
+                        remove { }
+                    }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -357,19 +381,20 @@ class C
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task SkipsEventAddRemove()
         {
-            var code = @"
-class C
-{
-    void M1() { }
+            var code = """
+                class C
+                {
+                    void M1() { }
 
-    $$event EventHandler E
-    {
-        add { }
-        remove { }
-    }
+                    $$event EventHandler E
+                    {
+                        add { }
+                        remove { }
+                    }
 
-    [||]void M2() { }
-}";
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -377,16 +402,17 @@ void M1() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task FromInsideMethod()
         {
-            var code = @"
-class C
-{
-    void M1()
-    {
-        $$System.Console.WriteLine();
-    }
+            var code = """
+                class C
+                {
+                    void M1()
+                    {
+                        $$System.Console.WriteLine();
+                    }
 
-    [||]void M2() { }
-}";
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -394,15 +420,16 @@ void M1()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task NextFromBetweenMethods()
         {
-            var code = @"
-class C
-{
-    void M1() { }
+            var code = """
+                class C
+                {
+                    void M1() { }
 
-    $$
+                    $$
 
-    [||]void M2() { }
-}";
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -410,15 +437,16 @@ void M1() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task PreviousFromBetweenMethods()
         {
-            var code = @"
-class C
-{
-    [||]void M1() { }
+            var code = """
+                class C
+                {
+                    [||]void M1() { }
 
-    $$
+                    $$
 
-    void M2() { }
-}";
+                    void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: false);
         }
@@ -426,15 +454,16 @@ void M2() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task NextFromBetweenMethodsInTrailingTrivia()
         {
-            var code = @"
-class C
-{
-    void M1()
-    {
-    } $$
+            var code = """
+                class C
+                {
+                    void M1()
+                    {
+                    } $$
 
-    [||]void M2() { }
-}";
+                    [||]void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -442,15 +471,16 @@ void M1()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task PreviousFromBetweenMethodsInTrailingTrivia()
         {
-            var code = @"
-class C
-{
-    [||]void M1()
-    {
-    } $$
+            var code = """
+                class C
+                {
+                    [||]void M1()
+                    {
+                    } $$
 
-    void M2() { }
-}";
+                    void M2() { }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: false);
         }
@@ -458,13 +488,14 @@ void M2() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task StopsAtExpressionBodiedMember()
         {
-            var code = @"
-class C
-{
-    int M1() => $$42;
+            var code = """
+                class C
+                {
+                    int M1() => $$42;
 
-    [||]int M2() => 42;
-}";
+                    [||]int M2() => 42;
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: true);
         }
@@ -473,18 +504,19 @@ class C
         [WorkItem("https://github.com/dotnet/roslyn/issues/10588")]
         public async Task PreviousFromInsideCurrent()
         {
-            var code = @"
-class C
-{
-    [||]void M1()
-    {
-        Console.WriteLine($$);
-    }
+            var code = """
+                class C
+                {
+                    [||]void M1()
+                    {
+                        Console.WriteLine($$);
+                    }
 
-    void M2()
-    {
-    }
-}";
+                    void M2()
+                    {
+                    }
+                }
+                """;
 
             await AssertNavigatedAsync(code, next: false);
         }
@@ -492,10 +524,11 @@ void M2()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task NextInScript()
         {
-            var code = @"
-$$void M1() { }
+            var code = """
+                $$void M1() { }
 
-[||]void M2() { }";
+                [||]void M2() { }
+                """;
 
             await AssertNavigatedAsync(code, next: true, sourceCodeKind: SourceCodeKind.Script);
         }
@@ -503,10 +536,11 @@ public async Task NextInScript()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/4311")]
         public async Task PrevInScript()
         {
-            var code = @"
-[||]void M1() { }
+            var code = """
+                [||]void M1() { }
 
-$$void M2() { }";
+                $$void M2() { }
+                """;
 
             await AssertNavigatedAsync(code, next: false, sourceCodeKind: SourceCodeKind.Script);
         }
diff --git a/src/EditorFeatures/CSharpTest/Intents/AddConstructorParameterIntentTests.cs b/src/EditorFeatures/CSharpTest/Intents/AddConstructorParameterIntentTests.cs
index 59b17307f2ba9..336721c5355af 100644
--- a/src/EditorFeatures/CSharpTest/Intents/AddConstructorParameterIntentTests.cs
+++ b/src/EditorFeatures/CSharpTest/Intents/AddConstructorParameterIntentTests.cs
@@ -29,34 +29,40 @@ public class AddConstructorParameterIntentTests : IntentTestsBase
         public async Task AddConstructorParameterWithField()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;{|priorSelection:|}
+                """
+                class C
+                {
+                    private readonly int _someInt;{|priorSelection:|}
 
-    public C()
-    {
-    }
-}";
+                    public C()
+                    {
+                    }
+                }
+                """;
 
             var currentText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C(int som)
-    {
-    }
-}";
+                    public C(int som)
+                    {
+                    }
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                    public C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
         }
@@ -65,33 +71,39 @@ public C(int someInt)
         public async Task AddConstructorParameterWithProperty()
         {
             var initialText =
-@"class C
-{
-    public int SomeInt { get; }{|priorSelection:|}
+                """
+                class C
+                {
+                    public int SomeInt { get; }{|priorSelection:|}
 
-    public C()
-    {
-    }
-}";
+                    public C()
+                    {
+                    }
+                }
+                """;
             var currentText =
-@"class C
-{
-    public int SomeInt { get; }
+                """
+                class C
+                {
+                    public int SomeInt { get; }
 
-    public C(int som)
-    {
-    }
-}";
+                    public C(int som)
+                    {
+                    }
+                }
+                """;
             var expectedText =
-@"class C
-{
-    public int SomeInt { get; }
+                """
+                class C
+                {
+                    public int SomeInt { get; }
 
-    public C(int someInt)
-    {
-        SomeInt = someInt;
-    }
-}";
+                    public C(int someInt)
+                    {
+                        SomeInt = someInt;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
         }
@@ -100,37 +112,43 @@ public C(int someInt)
         public async Task AddMultipleConstructorParameters()
         {
             var initialText =
-@"class C
-{
-    {|priorSelection:private readonly int _someInt;
-    private readonly string _someString;|}
+                """
+                class C
+                {
+                    {|priorSelection:private readonly int _someInt;
+                    private readonly string _someString;|}
 
-    public C()
-    {
-    }
-}";
+                    public C()
+                    {
+                    }
+                }
+                """;
             var currentText =
-@"class C
-{
-    {|priorSelection:private readonly int _someInt;
-    private readonly string _someString;|}
+                """
+                class C
+                {
+                    {|priorSelection:private readonly int _someInt;
+                    private readonly string _someString;|}
 
-    public C(int som)
-    {
-    }
-}";
+                    public C(int som)
+                    {
+                    }
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
-    private readonly string _someString;
+                """
+                class C
+                {
+                    private readonly int _someInt;
+                    private readonly string _someString;
 
-    public C(int someInt, string someString)
-    {
-        _someInt = someInt;
-        _someString = someString;
-    }
-}";
+                    public C(int someInt, string someString)
+                    {
+                        _someInt = someInt;
+                        _someString = someString;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
         }
@@ -139,36 +157,42 @@ public C(int someInt, string someString)
         public async Task AddConstructorParameterOnlyAddsSelected()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;{|priorSelection:|}
-    private readonly string _someString;
+                """
+                class C
+                {
+                    private readonly int _someInt;{|priorSelection:|}
+                    private readonly string _someString;
 
-    public C()
-    {
-    }
-}";
+                    public C()
+                    {
+                    }
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;{|priorSelection:|}
-    private readonly string _someString;
+                """
+                class C
+                {
+                    private readonly int _someInt;{|priorSelection:|}
+                    private readonly string _someString;
 
-    public C(int som)
-    {
-    }
-}";
+                    public C(int som)
+                    {
+                    }
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
-    private readonly string _someString;
+                """
+                class C
+                {
+                    private readonly int _someInt;
+                    private readonly string _someString;
 
-    public C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                    public C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
         }
@@ -177,33 +201,39 @@ public C(int someInt)
         public async Task AddConstructorParameterUsesCodeStyleOption()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;{|priorSelection:|}
+                """
+                class C
+                {
+                    private readonly int _someInt;{|priorSelection:|}
 
-    public C()
-    {
-    }
-}";
+                    public C()
+                    {
+                    }
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;{|priorSelection:|}
+                """
+                class C
+                {
+                    private readonly int _someInt;{|priorSelection:|}
 
-    public C(int som)
-    {
-    }
-}";
+                    public C(int som)
+                    {
+                    }
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C(int someInt)
-    {
-        this._someInt = someInt;
-    }
-}";
+                    public C(int someInt)
+                    {
+                        this._someInt = someInt;
+                    }
+                }
+                """;
             await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText,
                 options: new OptionsCollection(LanguageNames.CSharp)
                 {
@@ -215,33 +245,39 @@ await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialT
         public async Task AddConstructorParameterUsesExistingAccessibility()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;{|priorSelection:|}
+                """
+                class C
+                {
+                    private readonly int _someInt;{|priorSelection:|}
 
-    protected C()
-    {
-    }
-}";
+                    protected C()
+                    {
+                    }
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;{|priorSelection:|}
+                """
+                class C
+                {
+                    private readonly int _someInt;{|priorSelection:|}
 
-    protected C(int som)
-    {
-    }
-}";
+                    protected C(int som)
+                    {
+                    }
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    protected C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                    protected C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.AddConstructorParameter, initialText, currentText, expectedText).ConfigureAwait(false);
         }
diff --git a/src/EditorFeatures/CSharpTest/Intents/DeleteParameterIntentTests.cs b/src/EditorFeatures/CSharpTest/Intents/DeleteParameterIntentTests.cs
index 645a23be7c83e..a03f654dd728d 100644
--- a/src/EditorFeatures/CSharpTest/Intents/DeleteParameterIntentTests.cs
+++ b/src/EditorFeatures/CSharpTest/Intents/DeleteParameterIntentTests.cs
@@ -18,41 +18,47 @@ public class DeleteParameterIntentTests : IntentTestsBase
     public async Task TestDeleteParameterIntentAsync()
     {
         var initialText =
-@"class C
-{
-    void M()
-    {
-        Method({|priorSelection:1|});
-    }
-
-    void Method(int value)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method({|priorSelection:1|});
+                }
+
+                void Method(int value)
+                {
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        Method();
-    }
-
-    void Method(int value)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method();
+                }
+
+                void Method(int value)
+                {
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        Method();
-    }
-
-    void Method()
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method();
+                }
+
+                void Method()
+                {
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -61,41 +67,47 @@ void Method()
     public async Task TestDeleteParameterOnDefinitionIntentAsync()
     {
         var initialText =
-@"class C
-{
-    void M()
-    {
-        Method(1);
-    }
-
-    void Method(int {|priorSelection:value|})
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1);
+                }
+
+                void Method(int {|priorSelection:value|})
+                {
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        Method();
-    }
-
-    void Method(int value)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method();
+                }
+
+                void Method(int value)
+                {
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        Method();
-    }
-
-    void Method()
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method();
+                }
+
+                void Method()
+                {
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -103,41 +115,47 @@ void Method()
     [Fact]
     public async Task TestDeleteSecondParameterIntentAsync()
     {
-        var initialText = @"class C
-{
-    void M()
-    {
-        Method(1, {|priorSelection:2|}, 3);
-    }
-
-    void Method(int value1, int value2, int value3)
-    {
-    }
-}";
+        var initialText = """
+            class C
+            {
+                void M()
+                {
+                    Method(1, {|priorSelection:2|}, 3);
+                }
+
+                void Method(int value1, int value2, int value3)
+                {
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        Method(1, 3);
-    }
-
-    void Method(int value1, int value2, int value3)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1, 3);
+                }
+
+                void Method(int value1, int value2, int value3)
+                {
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        Method(1, 3);
-    }
-
-    void Method(int value1, int value3)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1, 3);
+                }
+
+                void Method(int value1, int value3)
+                {
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -145,41 +163,47 @@ void Method(int value1, int value3)
     [Fact]
     public async Task TestDeleteLastParameterAsync()
     {
-        var initialText = @"class C
-{
-    void M()
-    {
-        Method(1, 2, {|priorSelection:3|});
-    }
-
-    void Method(int value1, int value2, int value3)
-    {
-    }
-}";
+        var initialText = """
+            class C
+            {
+                void M()
+                {
+                    Method(1, 2, {|priorSelection:3|});
+                }
+
+                void Method(int value1, int value2, int value3)
+                {
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        Method(1, 2);
-    }
-
-    void Method(int value1, int value2, int value3)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1, 2);
+                }
+
+                void Method(int value1, int value2, int value3)
+                {
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        Method(1, 2);
-    }
-
-    void Method(int value1, int value2)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1, 2);
+                }
+
+                void Method(int value1, int value2)
+                {
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -187,39 +211,43 @@ void Method(int value1, int value2)
     [Fact]
     public async Task TestDeleteThisParameterAsync()
     {
-        var initialText = @"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo();
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo(this {|priorSelection:Foo|} foo)
-    {
-
-    }
-}";
+        var initialText = """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo();
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo(this {|priorSelection:Foo|} foo)
+                {
+
+                }
+            }
+            """;
         var currentText =
-@"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo();
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo()
-    {
-
-    }
-}";
+            """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo();
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo()
+                {
+
+                }
+            }
+            """;
 
         await VerifyIntentMissingAsync(WellKnownIntents.DeleteParameter, initialText, currentText).ConfigureAwait(false);
     }
@@ -227,56 +255,62 @@ public static void DoFoo()
     [Fact]
     public async Task TestDeleteParameterInExtensionMethodAsync()
     {
-        var initialText = @"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo({|priorSelection:1|}, 2);
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo(this Foo foo, int value1, int value2)
-    {
-
-    }
-}";
+        var initialText = """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo({|priorSelection:1|}, 2);
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo(this Foo foo, int value1, int value2)
+                {
+
+                }
+            }
+            """;
         var currentText =
-@"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo(2);
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo(this Foo foo, int value1, int value2)
-    {
-
-    }
-}";
+            """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo(2);
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo(this Foo foo, int value1, int value2)
+                {
+
+                }
+            }
+            """;
         var expectedText =
-@"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo(2);
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo(this Foo foo, int value2)
-    {
-
-    }
-}";
+            """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo(2);
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo(this Foo foo, int value2)
+                {
+
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -284,56 +318,62 @@ public static void DoFoo(this Foo foo, int value2)
     [Fact]
     public async Task TestDeleteParameterOnDefinitionAsync()
     {
-        var initialText = @"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo(1, 2);
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo(this Foo foo, int {|priorSelection:value1|}, int value2)
-    {
-
-    }
-}";
+        var initialText = """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo(1, 2);
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo(this Foo foo, int {|priorSelection:value1|}, int value2)
+                {
+
+                }
+            }
+            """;
         var currentText =
-@"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo(2);
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo(this Foo foo, int value1, int value2)
-    {
-
-    }
-}";
+            """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo(2);
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo(this Foo foo, int value1, int value2)
+                {
+
+                }
+            }
+            """;
         var expectedText =
-@"public class Foo
-{
-    static void Bar()
-    {
-        var f = new Foo();
-        f.DoFoo(2);
-    }
-}
-
-public static class FooExtensions
-{
-    public static void DoFoo(this Foo foo, int value2)
-    {
-
-    }
-}";
+            """
+            public class Foo
+            {
+                static void Bar()
+                {
+                    var f = new Foo();
+                    f.DoFoo(2);
+                }
+            }
+
+            public static class FooExtensions
+            {
+                public static void DoFoo(this Foo foo, int value2)
+                {
+
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -342,41 +382,47 @@ public static void DoFoo(this Foo foo, int value2)
     public async Task TestDeleteParamsParameterAsync()
     {
         var initialText =
-@"class C
-{
-    void M()
-    {
-        Method(new C(), {|priorSelection:1|}, 2, 3);
-    }
-
-    void Method(C c, params int[] values)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(new C(), {|priorSelection:1|}, 2, 3);
+                }
+
+                void Method(C c, params int[] values)
+                {
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        Method(new C(), 2, 3);
-    }
-
-    void Method(C c, params int[] values)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(new C(), 2, 3);
+                }
+
+                void Method(C c, params int[] values)
+                {
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        Method(new C());
-    }
-
-    void Method(C c)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(new C());
+                }
+
+                void Method(C c)
+                {
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -385,41 +431,47 @@ void Method(C c)
     public async Task TestDeleteParameterBeforeParamsAsync()
     {
         var initialText =
-@"class C
-{
-    void M()
-    {
-        Method(1.0f, 1, 2, 3);
-    }
-
-    void Method(float {|priorSelection:f|}, params int[] values)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1.0f, 1, 2, 3);
+                }
+
+                void Method(float {|priorSelection:f|}, params int[] values)
+                {
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        Method(1, 2, 3);
-    }
-
-    void Method(float f, params int[] values)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1, 2, 3);
+                }
+
+                void Method(float f, params int[] values)
+                {
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        Method(1, 2, 3);
-    }
-
-    void Method(params int[] values)
-    {
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    Method(1, 2, 3);
+                }
+
+                void Method(params int[] values)
+                {
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -428,53 +480,59 @@ void Method(params int[] values)
     public async Task TestDeleteParameterOnStaticExtensionInvocationAsync()
     {
         var initialText =
-@"public static class AExtension
-{
-    public static void Method(this A c, int i)
-    {
-
-    }
-}
-
-public class A
-{
-    void M()
-    {
-        AExtension.Method(new A(), {|priorSelection:1|});
-    }
-}";
+            """
+            public static class AExtension
+            {
+                public static void Method(this A c, int i)
+                {
+
+                }
+            }
+
+            public class A
+            {
+                void M()
+                {
+                    AExtension.Method(new A(), {|priorSelection:1|});
+                }
+            }
+            """;
         var currentText =
-@"public static class AExtension
-{
-    public static void Method(this A c, int i)
-    {
-
-    }
-}
-
-public class A
-{
-    void M()
-    {
-        AExtension.Method(new A());
-    }
-}";
+            """
+            public static class AExtension
+            {
+                public static void Method(this A c, int i)
+                {
+
+                }
+            }
+
+            public class A
+            {
+                void M()
+                {
+                    AExtension.Method(new A());
+                }
+            }
+            """;
         var expectedText =
-@"public static class AExtension
-{
-    public static void Method(this A c)
-    {
-
-    }
-}
-
-public class A
-{
-    void M()
-    {
-        AExtension.Method(new A());
-    }
-}";
+            """
+            public static class AExtension
+            {
+                public static void Method(this A c)
+                {
+
+                }
+            }
+
+            public class A
+            {
+                void M()
+                {
+                    AExtension.Method(new A());
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
@@ -483,44 +541,50 @@ void M()
     public async Task TestDeleteParameterOnConstructorInvocationAsync()
     {
         var initialText =
-@"public class A
-{
-    public A(int i, string s)
-    {
-
-    }
-
-    static A M()
-    {
-        return new A(1, {|priorSelection:""hello""|});
-    }
-}";
+            """
+            public class A
+            {
+                public A(int i, string s)
+                {
+
+                }
+
+                static A M()
+                {
+                    return new A(1, {|priorSelection:"hello"|});
+                }
+            }
+            """;
         var currentText =
-@"public class A
-{
-    public A(int i, string s)
-    {
-
-    }
-
-    static A M()
-    {
-        return new A(1);
-    }
-}";
+            """
+            public class A
+            {
+                public A(int i, string s)
+                {
+
+                }
+
+                static A M()
+                {
+                    return new A(1);
+                }
+            }
+            """;
         var expectedText =
-@"public class A
-{
-    public A(int i)
-    {
-
-    }
-
-    static A M()
-    {
-        return new A(1);
-    }
-}";
+            """
+            public class A
+            {
+                public A(int i)
+                {
+
+                }
+
+                static A M()
+                {
+                    return new A(1);
+                }
+            }
+            """;
 
         await VerifyExpectedTextAsync(WellKnownIntents.DeleteParameter, initialText, currentText, expectedText).ConfigureAwait(false);
     }
diff --git a/src/EditorFeatures/CSharpTest/Intents/GenerateConstructorIntentTests.cs b/src/EditorFeatures/CSharpTest/Intents/GenerateConstructorIntentTests.cs
index 5aed528476674..824935ab70ee1 100644
--- a/src/EditorFeatures/CSharpTest/Intents/GenerateConstructorIntentTests.cs
+++ b/src/EditorFeatures/CSharpTest/Intents/GenerateConstructorIntentTests.cs
@@ -18,29 +18,35 @@ public class GenerateConstructorIntentTests : IntentTestsBase
         public async Task GenerateConstructorSimpleResult()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    {|priorSelection:|}
-}";
+                    {|priorSelection:|}
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C
-}";
+                    public C
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                    public C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.GenerateConstructor, initialText, currentText, expectedText).ConfigureAwait(false);
         }
@@ -49,29 +55,35 @@ public C(int someInt)
         public async Task GenerateConstructorTypedPrivateWithoutIntentData()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    {|priorSelection:|}
-}";
+                    {|priorSelection:|}
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    private C
-}";
+                    private C
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                    public C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.GenerateConstructor, initialText, currentText, expectedText).ConfigureAwait(false);
         }
@@ -80,29 +92,35 @@ public C(int someInt)
         public async Task GenerateConstructorTypedPrivateWithIntentData()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    {|priorSelection:|}
-}";
+                    {|priorSelection:|}
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    private C
-}";
+                    private C
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    private C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                    private C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             // lang=json
             var intentData = @"{ ""accessibility"": ""Private""}";
@@ -114,29 +132,35 @@ private C(int someInt)
         public async Task GenerateConstructorTypedPrivateProtectedWithIntentData()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    {|priorSelection:|}
-}";
+                    {|priorSelection:|}
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    private protected C
-}";
+                    private protected C
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    private protected C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                    private protected C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             // lang=json
             var intentData = @"{ ""accessibility"": ""ProtectedAndInternal""}";
@@ -148,30 +172,38 @@ private protected C(int someInt)
         public async Task GenerateConstructorWithFieldsInPartial()
         {
             var initialText =
-@"partial class C
-{
-    {|priorSelection:|}
-}";
+                """
+                partial class C
+                {
+                    {|priorSelection:|}
+                }
+                """;
             var currentText =
-@"partial class C
-{
-    public C
-}";
+                """
+                partial class C
+                {
+                    public C
+                }
+                """;
             var additionalDocuments = new string[]
             {
-@"partial class C
-{
-    private readonly int _someInt;
-}"
+                """
+                partial class C
+                {
+                    private readonly int _someInt;
+                }
+                """
             };
             var expectedText =
-@"partial class C
-{
-    public C(int someInt)
-    {
-        _someInt = someInt;
-    }
-}";
+                """
+                partial class C
+                {
+                    public C(int someInt)
+                    {
+                        _someInt = someInt;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.GenerateConstructor, initialText, currentText, additionalDocuments, new[] { expectedText }).ConfigureAwait(false);
         }
@@ -180,29 +212,35 @@ public C(int someInt)
         public async Task GenerateConstructorWithReferenceType()
         {
             var initialText =
-@"class C
-{
-    private readonly object _someObject;
+                """
+                class C
+                {
+                    private readonly object _someObject;
 
-    {|priorSelection:|}
-}";
+                    {|priorSelection:|}
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly object _someObject;
+                """
+                class C
+                {
+                    private readonly object _someObject;
 
-    public C
-}";
+                    public C
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly object _someObject;
+                """
+                class C
+                {
+                    private readonly object _someObject;
 
-    public C(object someObject)
-    {
-        _someObject = someObject;
-    }
-}";
+                    public C(object someObject)
+                    {
+                        _someObject = someObject;
+                    }
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.GenerateConstructor, initialText, currentText, expectedText).ConfigureAwait(false);
         }
@@ -211,26 +249,32 @@ public C(object someObject)
         public async Task GenerateConstructorWithExpressionBodyOption()
         {
             var initialText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    {|priorSelection:|}
-}";
+                    {|priorSelection:|}
+                }
+                """;
             var currentText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C
-}";
+                    public C
+                }
+                """;
             var expectedText =
-@"class C
-{
-    private readonly int _someInt;
+                """
+                class C
+                {
+                    private readonly int _someInt;
 
-    public C(int someInt) => _someInt = someInt;
-}";
+                    public C(int someInt) => _someInt = someInt;
+                }
+                """;
 
             await VerifyExpectedTextAsync(WellKnownIntents.GenerateConstructor, initialText, currentText, expectedText,
                 options: new OptionsCollection(LanguageNames.CSharp)
diff --git a/src/EditorFeatures/CSharpTest/Intents/RenameIntentTests.cs b/src/EditorFeatures/CSharpTest/Intents/RenameIntentTests.cs
index 7031814ae04fe..a736b1985ee48 100644
--- a/src/EditorFeatures/CSharpTest/Intents/RenameIntentTests.cs
+++ b/src/EditorFeatures/CSharpTest/Intents/RenameIntentTests.cs
@@ -18,32 +18,38 @@ public class RenameIntentTests : IntentTestsBase
     public async Task TestRenameIntentAsync()
     {
         var initialText =
-@"class C
-{
-    void M()
-    {
-        var thing = 1;
-        {|priorSelection:thing|}.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var thing = 1;
+                    {|priorSelection:thing|}.ToString();
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        var thing = 1;
-        something.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var thing = 1;
+                    something.ToString();
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        var something = 1;
-        something.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var something = 1;
+                    something.ToString();
+                }
+            }
+            """;
 
         await VerifyExpectedRenameAsync(initialText, currentText, expectedText, "something").ConfigureAwait(false);
     }
@@ -52,32 +58,38 @@ void M()
     public async Task TestRenameIntentAsync_Insert()
     {
         var initialText =
-@"class C
-{
-    void M()
-    {
-        var thing = 1;
-        {|priorSelection:|}thing.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var thing = 1;
+                    {|priorSelection:|}thing.ToString();
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        var thing = 1;
-        something.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var thing = 1;
+                    something.ToString();
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        var something = 1;
-        something.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var something = 1;
+                    something.ToString();
+                }
+            }
+            """;
 
         await VerifyExpectedRenameAsync(initialText, currentText, expectedText, "something").ConfigureAwait(false);
     }
@@ -86,32 +98,38 @@ void M()
     public async Task TestRenameIntentAsync_Delete()
     {
         var initialText =
-@"class C
-{
-    void M()
-    {
-        var something = 1;
-        {|priorSelection:some|}thing.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var something = 1;
+                    {|priorSelection:some|}thing.ToString();
+                }
+            }
+            """;
         var currentText =
-@"class C
-{
-    void M()
-    {
-        var something = 1;
-        thing.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var something = 1;
+                    thing.ToString();
+                }
+            }
+            """;
         var expectedText =
-@"class C
-{
-    void M()
-    {
-        var thing = 1;
-        thing.ToString();
-    }
-}";
+            """
+            class C
+            {
+                void M()
+                {
+                    var thing = 1;
+                    thing.ToString();
+                }
+            }
+            """;
 
         await VerifyExpectedRenameAsync(initialText, currentText, expectedText, "thing").ConfigureAwait(false);
     }
@@ -120,69 +138,79 @@ void M()
     public async Task TestRenameIntentAsync_MultipleFiles()
     {
         var initialText =
-@"namespace M
-{
-    public class C
-    {
-        public static string {|priorSelection:SomeString|} = string.Empty;
-
-        void M()
-        {
-            var m = SomeString;
-        }
-    }
-}";
+            """
+            namespace M
+            {
+                public class C
+                {
+                    public static string {|priorSelection:SomeString|} = string.Empty;
+
+                    void M()
+                    {
+                        var m = SomeString;
+                    }
+                }
+            }
+            """;
         var currentText =
-@"namespace M
-{
-    public class C
-    {
-        public static string BetterString = string.Empty;
-
-        void M()
-        {
-            var m = SomeString;
-        }
-    }
-}";
+            """
+            namespace M
+            {
+                public class C
+                {
+                    public static string BetterString = string.Empty;
+
+                    void M()
+                    {
+                        var m = SomeString;
+                    }
+                }
+            }
+            """;
         var additionalDocuments = new string[]
         {
-@"namespace M
-{
-    public class D
-    {
-        void M()
-        {
-            var m = C.SomeString;
-        }
-    }
-}"
+            """
+            namespace M
+            {
+                public class D
+                {
+                    void M()
+                    {
+                        var m = C.SomeString;
+                    }
+                }
+            }
+            """
         };
 
         var expectedTexts = new string[]
         {
-@"namespace M
-{
-    public class C
-    {
-        public static string BetterString = string.Empty;
-
-        void M()
-        {
-            var m = BetterString;
-        }
-    }
-}",
-@"namespace M
-{
-    public class D
-    {
-        void M()
-        {
-            var m = C.BetterString;
-        }
-    }
-}"
+            """
+            namespace M
+            {
+                public class C
+                {
+                    public static string BetterString = string.Empty;
+
+                    void M()
+                    {
+                        var m = BetterString;
+                    }
+                }
+            }
+            """,
+            """
+            namespace M
+            {
+                public class D
+                {
+                    void M()
+                    {
+                        var m = C.BetterString;
+                    }
+                }
+            }
+            """
         };
 
         await VerifyExpectedRenameAsync(initialText, currentText, additionalDocuments, expectedTexts, "BetterString").ConfigureAwait(false);
diff --git a/src/EditorFeatures/CSharpTest/Interactive/NavigateTo/InteractiveNavigateToTests.cs b/src/EditorFeatures/CSharpTest/Interactive/NavigateTo/InteractiveNavigateToTests.cs
index 4846af4d2ed69..b6744f7ff090e 100644
--- a/src/EditorFeatures/CSharpTest/Interactive/NavigateTo/InteractiveNavigateToTests.cs
+++ b/src/EditorFeatures/CSharpTest/Interactive/NavigateTo/InteractiveNavigateToTests.cs
@@ -42,9 +42,11 @@ await TestAsync(testHost, composition, "", async w =>
         public async Task FindClass(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
-@"class Goo
-{
-}", async w =>
+                """
+                class Goo
+                {
+                }
+                """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassPrivate);
@@ -56,15 +58,17 @@ await TestAsync(testHost, composition,
         public async Task FindNestedClass(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    class Bar
-    {
-        internal class DogBed
-        {
-        }
-    }
-}", async w =>
+ """
+ class Goo
+ {
+     class Bar
+     {
+         internal class DogBed
+         {
+         }
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DogBed")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "DogBed", "[|DogBed|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -76,18 +80,20 @@ internal class DogBed
         public async Task FindMemberInANestedClass(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    class Bar
-    {
-        class DogBed
-        {
-            public void Method()
-            {
-            }
-        }
-    }
-}", async w =>
+ """
+ class Goo
+ {
+     class Bar
+     {
+         class DogBed
+         {
+             public void Method()
+             {
+             }
+         }
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Method")).Single();
                 VerifyNavigateToResultItem(item, "Method", "[|Method|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo.Bar.DogBed", "Test"));
@@ -99,11 +105,13 @@ public void Method()
         public async Task FindGenericClassWithConstraints(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"using System.Collections;
+ """
+ using System.Collections;
 
-class Goo<T> where T : IEnumerable
-{
-}", async w =>
+ class Goo<T> where T : IEnumerable
+ {
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]<T>", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassPrivate);
@@ -115,14 +123,16 @@ class Goo<T> where T : IEnumerable
         public async Task FindGenericMethodWithConstraints(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"using System;
+ """
+ using System;
 
-class Goo<U>
-{
-    public void Bar<T>(T item) where T : IComparable<T>
-    {
-    }
-}", async w =>
+ class Goo<U>
+ {
+     public void Bar<T>(T item) where T : IComparable<T>
+     {
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Bar")).Single();
                 VerifyNavigateToResultItem(item, "Bar", "[|Bar|]<T>(T)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo<U>", "Test"));
@@ -134,15 +144,17 @@ public void Bar<T>(T item) where T : IComparable<T>
         public async Task FindPartialClass(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"public partial class Goo
-{
-    int a;
-}
-
-partial class Goo
-{
-    int b;
-}", async w =>
+ """
+ public partial class Goo
+ {
+     int a;
+ }
+
+ partial class Goo
+ {
+     int b;
+ }
+ """, async w =>
             {
                 var expecteditem1 = new NavigateToItem("Goo", NavigateToItemKind.Class, "csharp", null, null, s_emptyExactPatternMatch, null);
                 var expecteditems = new List<NavigateToItem> { expecteditem1, expecteditem1 };
@@ -158,9 +170,11 @@ partial class Goo
         public async Task FindTypesInMetadata(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"using System;
+ """
+ using System;
 
-Class Program { FileStyleUriParser f; }", async w =>
+ Class Program { FileStyleUriParser f; }
+ """, async w =>
             {
                 var items = await _aggregator.GetItemsAsync("FileStyleUriParser");
                 Assert.Equal(0, items.Count());
@@ -172,12 +186,14 @@ await TestAsync(testHost, composition,
         public async Task FindClassInNamespace(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"namespace Bar
-{
-    class Goo
-    {
-    }
-}", async w =>
+ """
+ namespace Bar
+ {
+     class Goo
+     {
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -189,9 +205,11 @@ class Goo
         public async Task FindStruct(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"struct Bar
-{
-}", async w =>
+ """
+ struct Bar
+ {
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("B")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Bar", "[|B|]ar", PatternMatchKind.Prefix, NavigateToItemKind.Structure, Glyph.StructurePrivate);
@@ -203,12 +221,14 @@ await TestAsync(testHost, composition,
         public async Task FindEnum(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"enum Colors
-{
-    Red,
-    Green,
-    Blue
-}", async w =>
+ """
+ enum Colors
+ {
+     Red,
+     Green,
+     Blue
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Colors")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Colors", "[|Colors|]", PatternMatchKind.Exact, NavigateToItemKind.Enum, Glyph.EnumPrivate);
@@ -220,12 +240,14 @@ await TestAsync(testHost, composition,
         public async Task FindEnumMember(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"enum Colors
-{
-    Red,
-    Green,
-    Blue
-}", async w =>
+ """
+ enum Colors
+ {
+     Red,
+     Green,
+     Blue
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("R")).Single();
                 VerifyNavigateToResultItem(item, "Red", "[|R|]ed", PatternMatchKind.Prefix, NavigateToItemKind.EnumItem, Glyph.EnumMemberPublic);
@@ -237,10 +259,12 @@ await TestAsync(testHost, composition,
         public async Task FindConstField(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    const int bar = 7;
-}", async w =>
+ """
+ class Goo
+ {
+     const int bar = 7;
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("ba")).Single();
                 VerifyNavigateToResultItem(item, "bar", "[|ba|]r", PatternMatchKind.Prefix, NavigateToItemKind.Constant, Glyph.ConstantPrivate);
@@ -252,10 +276,12 @@ await TestAsync(testHost, composition,
         public async Task FindVerbatimIdentifier(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    string @string;
-}", async w =>
+ """
+ class Goo
+ {
+     string @string;
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("string")).Single();
                 VerifyNavigateToResultItem(item, "string", "[|string|]", PatternMatchKind.Exact, NavigateToItemKind.Field, Glyph.FieldPrivate, additionalInfo: string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -291,10 +317,12 @@ await TestAsync(testHost, composition, program, async w =>
         public async Task FindAutoProperty(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    int Bar { get; set; }
-}", async w =>
+ """
+ class Goo
+ {
+     int Bar { get; set; }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("B")).Single();
                 VerifyNavigateToResultItem(item, "Bar", "[|B|]ar", PatternMatchKind.Prefix, NavigateToItemKind.Property, Glyph.PropertyPrivate, additionalInfo: string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -306,10 +334,12 @@ await TestAsync(testHost, composition,
         public async Task FindMethod(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    void DoSomething();
-}", async w =>
+ """
+ class Goo
+ {
+     void DoSomething();
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DS")).Single();
                 VerifyNavigateToResultItem(item, "DoSomething", "[|D|]o[|S|]omething()", PatternMatchKind.CamelCaseExact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -321,12 +351,14 @@ await TestAsync(testHost, composition,
         public async Task FindParameterizedMethod(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    void DoSomething(int a, string b)
-    {
-    }
-}", async w =>
+ """
+ class Goo
+ {
+     void DoSomething(int a, string b)
+     {
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DS")).Single();
                 VerifyNavigateToResultItem(item, "DoSomething", "[|D|]o[|S|]omething(int, string)", PatternMatchKind.CamelCaseExact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -338,12 +370,14 @@ void DoSomething(int a, string b)
         public async Task FindConstructor(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    public Goo()
-    {
-    }
-}", async w =>
+ """
+ class Goo
+ {
+     public Goo()
+     {
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(t => t.Kind == NavigateToItemKind.Method);
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -355,12 +389,14 @@ public Goo()
         public async Task FindParameterizedConstructor(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    public Goo(int i)
-    {
-    }
-}", async w =>
+ """
+ class Goo
+ {
+     public Goo(int i)
+     {
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(t => t.Kind == NavigateToItemKind.Method);
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|](int)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -372,12 +408,14 @@ public Goo(int i)
         public async Task FindStaticConstructor(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class Goo
-{
-    static Goo()
-    {
-    }
-}", async w =>
+ """
+ class Goo
+ {
+     static Goo()
+     {
+     }
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(t => t.Kind == NavigateToItemKind.Method && t.Name != ".ctor");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|].static Goo()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -404,10 +442,12 @@ public async Task FindPartialMethods(TestHost testHost, Composition composition)
         public async Task FindPartialMethodDefinitionOnly(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"partial class Goo
-{
-    partial void Bar();
-}", async w =>
+ """
+ partial class Goo
+ {
+     partial void Bar();
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Bar")).Single();
                 VerifyNavigateToResultItem(item, "Bar", "[|Bar|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_1_2, "Goo", "test1.cs", "Test"));
@@ -449,9 +489,11 @@ await TestAsync(testHost, composition, program, async w =>
         public async Task FindInterface(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"public interface IGoo
-{
-}", async w =>
+ """
+ public interface IGoo
+ {
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("IG")).Single();
                 VerifyNavigateToResultItem(item, "IGoo", "[|IG|]oo", PatternMatchKind.Prefix, NavigateToItemKind.Interface, Glyph.InterfacePublic);
@@ -463,10 +505,12 @@ await TestAsync(testHost, composition,
         public async Task FindDelegateInNamespace(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"namespace Goo
-{
-    delegate void DoStuff();
-}", async w =>
+ """
+ namespace Goo
+ {
+     delegate void DoStuff();
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DoStuff")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "DoStuff", "[|DoStuff|]", PatternMatchKind.Exact, NavigateToItemKind.Delegate, Glyph.DelegateInternal);
@@ -478,12 +522,14 @@ await TestAsync(testHost, composition,
         public async Task FindLambdaExpression(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"using System;
+ """
+ using System;
 
-class Goo
-{
-    Func<int, int> sqr = x => x * x;
-}", async w =>
+ class Goo
+ {
+     Func<int, int> sqr = x => x * x;
+ }
+ """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("sqr")).Single();
                 VerifyNavigateToResultItem(item, "sqr", "[|sqr|]", PatternMatchKind.Exact, NavigateToItemKind.Field, Glyph.FieldPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -495,23 +541,25 @@ class Goo
         public async Task OrderingOfConstructorsAndTypes(TestHost testHost, Composition composition)
         {
             await TestAsync(testHost, composition,
- @"class C1
-{
-    C1(int i)
-    {
-    }
-}
-
-class C2
-{
-    C2(float f)
-    {
-    }
-
-    static C2()
-    {
-    }
-}", async w =>
+ """
+ class C1
+ {
+     C1(int i)
+     {
+     }
+ }
+
+ class C2
+ {
+     C2(float f)
+     {
+     }
+
+     static C2()
+     {
+     }
+ }
+ """, async w =>
             {
                 var expecteditems = new List<NavigateToItem>
                 {
@@ -533,9 +581,11 @@ public async Task StartStopSanity(TestHost testHost, Composition composition)
         {
             // Verify that multiple calls to start/stop and dispose don't blow up
             await TestAsync(testHost, composition,
- @"public class Goo
-{
-}", async w =>
+ """
+ public class Goo
+ {
+ }
+ """, async w =>
             {
                 // Do one set of queries
                 Assert.Single((await _aggregator.GetItemsAsync("Goo")).Where(x => x.Kind != "Method"));
@@ -554,7 +604,12 @@ await TestAsync(testHost, composition,
         [CombinatorialData]
         public async Task DescriptionItems(TestHost testHost, Composition composition)
         {
-            var code = "public\r\nclass\r\nGoo\r\n{ }";
+            var code = """
+                public
+                class
+                Goo
+                { }
+                """;
             await TestAsync(testHost, composition, code, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("G")).Single(x => x.Kind != "Method");
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncLocalFunctionHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncLocalFunctionHighlighterTests.cs
index b59b2827b66f7..2e4f2f21f83f9 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncLocalFunctionHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncLocalFunctionHighlighterTests.cs
@@ -21,29 +21,31 @@ internal override Type GetHighlighterType()
         public async Task TestLocalFunction()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-class AsyncExample
-{
-    async Task<int> AsyncMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
+                class AsyncExample
+                {
+                    async Task<int> AsyncMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
 
-    async Task UseAsync()
-    {
-        {|Cursor:[|async|]|} Task<int> function()
-        {
-            return [|await|] AsyncMethod();
-        }
-        int result = await AsyncMethod();
-        Task<int> resultTask = AsyncMethod();
-        result = await resultTask;
-        result = await function();
-    }
-}");
+                    async Task UseAsync()
+                    {
+                        {|Cursor:[|async|]|} Task<int> function()
+                        {
+                            return [|await|] AsyncMethod();
+                        }
+                        int result = await AsyncMethod();
+                        Task<int> resultTask = AsyncMethod();
+                        result = await resultTask;
+                        result = await function();
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncMethodHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncMethodHighlighterTests.cs
index 7afb9ba4e8160..1c1a47dc5ebb1 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncMethodHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/AsyncMethodHighlighterTests.cs
@@ -22,58 +22,62 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-class AsyncExample
-{
-    {|Cursor:[|async|]|} Task<int> AsyncMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
+                class AsyncExample
+                {
+                    {|Cursor:[|async|]|} Task<int> AsyncMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
 
-    async Task UseAsync()
-    {
-        Func<Task<int>> lambda = async () =>
-        {
-            return await AsyncMethod();
-        };
-        int result = await AsyncMethod();
-        Task<int> resultTask = AsyncMethod();
-        result = await resultTask;
-        result = await lambda();
-    }
-}");
+                    async Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = async () =>
+                        {
+                            return await AsyncMethod();
+                        };
+                        int result = await AsyncMethod();
+                        Task<int> resultTask = AsyncMethod();
+                        result = await resultTask;
+                        result = await lambda();
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_1()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-class AsyncExample
-{
-    async Task<int> AsyncMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
+                class AsyncExample
+                {
+                    async Task<int> AsyncMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
 
-    {|Cursor:[|async|]|} Task UseAsync()
-    {
-        Func<Task<int>> lambda = async () =>
-        {
-            return await AsyncMethod();
-        };
-        int result = [|await|] AsyncMethod();
-        Task<int> resultTask = AsyncMethod();
-        result = [|await|] resultTask;
-        result = [|await|] lambda();
-    }
-}");
+                    {|Cursor:[|async|]|} Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = async () =>
+                        {
+                            return await AsyncMethod();
+                        };
+                        int result = [|await|] AsyncMethod();
+                        Task<int> resultTask = AsyncMethod();
+                        result = [|await|] resultTask;
+                        result = [|await|] lambda();
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/AwaitHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/AwaitHighlighterTests.cs
index 25e67ee900ec5..06da72b09d816 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/AwaitHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/AwaitHighlighterTests.cs
@@ -23,312 +23,342 @@ internal override Type GetHighlighterType()
         public async Task TestExample2_2()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
-
-class AsyncExample
-{
-    async Task<int> AsyncMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
-
-    [|async|] Task UseAsync()
-    {
-        Func<Task<int>> lambda = async () =>
-        {
-            return await AsyncMethod();
-        };
-        int result = {|Cursor:[|await|]|} AsyncMethod();
-        Task<int> resultTask = AsyncMethod();
-        result = [|await|] resultTask;
-        result = [|await|] lambda();
-    }
-}");
+                """
+                using System;
+                using System.Threading.Tasks;
+
+                class AsyncExample
+                {
+                    async Task<int> AsyncMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
+
+                    [|async|] Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = async () =>
+                        {
+                            return await AsyncMethod();
+                        };
+                        int result = {|Cursor:[|await|]|} AsyncMethod();
+                        Task<int> resultTask = AsyncMethod();
+                        result = [|await|] resultTask;
+                        result = [|await|] lambda();
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_3()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
-
-class AsyncExample
-{
-    async Task<int> AsyncMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
-
-    [|async|] Task UseAsync()
-    {
-        Func<Task<int>> lambda = async () =>
-        {
-            return await AsyncMethod();
-        };
-        int result = [|await|] AsyncMethod();
-        Task<int> resultTask = AsyncMethod();
-        result = {|Cursor:[|await|]|} resultTask;
-        result = [|await|] lambda();
-    }
-}");
+                """
+                using System;
+                using System.Threading.Tasks;
+
+                class AsyncExample
+                {
+                    async Task<int> AsyncMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
+
+                    [|async|] Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = async () =>
+                        {
+                            return await AsyncMethod();
+                        };
+                        int result = [|await|] AsyncMethod();
+                        Task<int> resultTask = AsyncMethod();
+                        result = {|Cursor:[|await|]|} resultTask;
+                        result = [|await|] lambda();
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_4()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
-
-class AsyncExample
-{
-    async Task<int> AsyncMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
-
-    [|async|] Task UseAsync()
-    {
-        Func<Task<int>> lambda = async () =>
-        {
-            return await AsyncMethod();
-        };
-        int result = [|await|] AsyncMethod();
-        Task<int> resultTask = AsyncMethod();
-        result = [|await|] resultTask;
-        result = {|Cursor:[|await|]|} lambda();
-    }
-}");
+                """
+                using System;
+                using System.Threading.Tasks;
+
+                class AsyncExample
+                {
+                    async Task<int> AsyncMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
+
+                    [|async|] Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = async () =>
+                        {
+                            return await AsyncMethod();
+                        };
+                        int result = [|await|] AsyncMethod();
+                        Task<int> resultTask = AsyncMethod();
+                        result = [|await|] resultTask;
+                        result = {|Cursor:[|await|]|} lambda();
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample3_2()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
-
-class AsyncExample
-{
-    async Task<int> AsyncMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
-
-    async Task UseAsync()
-    {
-        Func<Task<int>> lambda = [|async|] () =>
-        {
-            return {|Cursor:[|await|]|} AsyncMethod();
-        };
-        int result = await AsyncMethod();
-        Task<int> resultTask = AsyncMethod();
-        result = await resultTask;
-        result = await lambda();
-    }
-}");
+                """
+                using System;
+                using System.Threading.Tasks;
+
+                class AsyncExample
+                {
+                    async Task<int> AsyncMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
+
+                    async Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = [|async|] () =>
+                        {
+                            return {|Cursor:[|await|]|} AsyncMethod();
+                        };
+                        int result = await AsyncMethod();
+                        Task<int> resultTask = AsyncMethod();
+                        result = await resultTask;
+                        result = await lambda();
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/573625")]
         public async Task TestNestedAwaits1()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
-
-class AsyncExample
-{
-    async Task<Task<int>> AsyncMethod()
-    {
-        return NewMethod();
-    }
-
-    private static Task<int> NewMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
-
-    async Task UseAsync()
-    {
-        Func<Task<int>> lambda = [|async|] () =>
-        {
-            return {|Cursor:[|await await|]|} AsyncMethod();
-        };
-        int result = await await AsyncMethod();
-        Task<Task<int>> resultTask = AsyncMethod();
-        result = await await resultTask;
-        result = await lambda();
-    }
-}");
+                """
+                using System;
+                using System.Threading.Tasks;
+
+                class AsyncExample
+                {
+                    async Task<Task<int>> AsyncMethod()
+                    {
+                        return NewMethod();
+                    }
+
+                    private static Task<int> NewMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
+
+                    async Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = [|async|] () =>
+                        {
+                            return {|Cursor:[|await await|]|} AsyncMethod();
+                        };
+                        int result = await await AsyncMethod();
+                        Task<Task<int>> resultTask = AsyncMethod();
+                        result = await await resultTask;
+                        result = await lambda();
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/573625")]
         public async Task TestNestedAwaits2()
         {
             await TestAsync(
-@"using System;
-using System.Threading.Tasks;
-
-class AsyncExample
-{
-    async Task<Task<int>> AsyncMethod()
-    {
-        return NewMethod();
-    }
-
-    private static Task<int> NewMethod()
-    {
-        int hours = 24;
-        return hours;
-    }
-
-    [|async|] Task UseAsync()
-    {
-        Func<Task<int>> lambda = async () =>
-        {
-            return await await AsyncMethod();
-        };
-        int result = {|Cursor:[|await await|]|} AsyncMethod();
-        Task<Task<int>> resultTask = AsyncMethod();
-        result = [|await await|] resultTask;
-        result = [|await|] lambda();
-    }
-}");
+                """
+                using System;
+                using System.Threading.Tasks;
+
+                class AsyncExample
+                {
+                    async Task<Task<int>> AsyncMethod()
+                    {
+                        return NewMethod();
+                    }
+
+                    private static Task<int> NewMethod()
+                    {
+                        int hours = 24;
+                        return hours;
+                    }
+
+                    [|async|] Task UseAsync()
+                    {
+                        Func<Task<int>> lambda = async () =>
+                        {
+                            return await await AsyncMethod();
+                        };
+                        int result = {|Cursor:[|await await|]|} AsyncMethod();
+                        Task<Task<int>> resultTask = AsyncMethod();
+                        result = [|await await|] resultTask;
+                        result = [|await|] lambda();
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestAwaitUsing_OnAsync()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    {|Cursor:[|async|]|} Task M()
-    {
-        [|await|] using (var x = new object());
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    {|Cursor:[|async|]|} Task M()
+                    {
+                        [|await|] using (var x = new object());
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestAwaitUsing_OnAwait()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    [|async|] Task M()
-    {
-        {|Cursor:[|await|]|} using (var x = new object());
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    [|async|] Task M()
+                    {
+                        {|Cursor:[|await|]|} using (var x = new object());
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestAwaitUsingDeclaration_OnAsync()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    {|Cursor:[|async|]|} Task M()
-    {
-        [|await|] using var x = new object();
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    {|Cursor:[|async|]|} Task M()
+                    {
+                        [|await|] using var x = new object();
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestAwaitUsingDeclaration_OnAwait()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    [|async|] Task M()
-    {
-        {|Cursor:[|await|]|} using var x = new object();
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    [|async|] Task M()
+                    {
+                        {|Cursor:[|await|]|} using var x = new object();
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestAwaitForEach_OnAsync()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    {|Cursor:[|async|]|} Task M()
-    {
-        foreach [|await|] (var n in new int[] { });
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    {|Cursor:[|async|]|} Task M()
+                    {
+                        foreach [|await|] (var n in new int[] { });
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestAwaitForEach_OnAwait()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    [|async|] Task M()
-    {
-        foreach {|Cursor:[|await|]|} (var n in new int[] { });
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    [|async|] Task M()
+                    {
+                        foreach {|Cursor:[|await|]|} (var n in new int[] { });
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestForEachVariableAwait_OnAsync()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    {|Cursor:[|async|]|} Task M()
-    {
-        foreach [|await|] (var (a, b) in new (int, int)[] { });
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    {|Cursor:[|async|]|} Task M()
+                    {
+                        foreach [|await|] (var (a, b) in new (int, int)[] { });
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestForEachVariableAwait_OnAwait()
         {
             await TestAsync(
-@"using System.Threading.Tasks;
-
-class C
-{
-    [|async|] Task M()
-    {
-        foreach {|Cursor:[|await|]|} (var (a, b) in new (int, int)[] { });
-    }
-}");
+                """
+                using System.Threading.Tasks;
+
+                class C
+                {
+                    [|async|] Task M()
+                    {
+                        foreach {|Cursor:[|await|]|} (var (a, b) in new (int, int)[] { });
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/60400")]
         public async Task TestTopLevelStatements()
         {
             await TestAsync(
-@"[|await|] Task.Delay(1000);
-{|Cursor:[|await|]|} Task.Run(() => { })");
+                """
+                [|await|] Task.Delay(1000);
+                {|Cursor:[|await|]|} Task.Run(() => { })
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedExpressionHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedExpressionHighlighterTests.cs
index e3e106a05da1f..18fa05058ec71 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedExpressionHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedExpressionHighlighterTests.cs
@@ -22,41 +22,45 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        short x = short.MaxValue;
-        short y = short.MaxValue;
-        int z;
-        try
-        {
-            z = {|Cursor:[|checked|]|}((short)(x + y));
-        }
-        catch (OverflowException e)
-        {
-            z = -1;
-        }
+                """
+                class C
+                {
+                    void M()
+                    {
+                        short x = short.MaxValue;
+                        short y = short.MaxValue;
+                        int z;
+                        try
+                        {
+                            z = {|Cursor:[|checked|]|}((short)(x + y));
+                        }
+                        catch (OverflowException e)
+                        {
+                            z = -1;
+                        }
 
-        return z;
-    }
-}");
+                        return z;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        short x = short.MaxValue;
-        short y = short.MaxValue;
-        int z = {|Cursor:[|unchecked|]|}((short)(x + y));
-        return z;
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        short x = short.MaxValue;
+                        short y = short.MaxValue;
+                        int z = {|Cursor:[|unchecked|]|}((short)(x + y));
+                        return z;
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedStatementHighlighterTests.cs
index 3dc1741cf4a89..0b119d7020616 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/CheckedStatementHighlighterTests.cs
@@ -22,52 +22,56 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        short x = 0;
-        short y = 100;
-        while (true)
-        {
-            {|Cursor:[|checked|]|}
-            {
-                x++;
-            }
+                """
+                class C
+                {
+                    void M()
+                    {
+                        short x = 0;
+                        short y = 100;
+                        while (true)
+                        {
+                            {|Cursor:[|checked|]|}
+                            {
+                                x++;
+                            }
 
-            unchecked
-            {
-                y++;
-            }
-        }
-    }
-}");
+                            unchecked
+                            {
+                                y++;
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        short x = 0;
-        short y = 100;
-        while (true)
-        {
-            checked
-            {
-                x++;
-            }
+                """
+                class C
+                {
+                    void M()
+                    {
+                        short x = 0;
+                        short y = 100;
+                        while (true)
+                        {
+                            checked
+                            {
+                                x++;
+                            }
 
-            {|Cursor:[|unchecked|]|}
-            {
-                y++;
-            }
-        }
-    }
-}");
+                            {|Cursor:[|unchecked|]|}
+                            {
+                                y++;
+                            }
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/ConditionalPreprocessorHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/ConditionalPreprocessorHighlighterTests.cs
index a08b904799a6a..a3cc17b2a0657 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/ConditionalPreprocessorHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/ConditionalPreprocessorHighlighterTests.cs
@@ -22,243 +22,261 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-
-
-        #define Debug
-#undef Trace
-    class PurchaseTransaction
-    {
-        void Commit()
-        {
-{|Cursor:[|#if|]|} Debug
-            CheckConsistency();
-#if Trace
-                WriteToLog(this.ToString());
-#else
-            Exit();
-#endif
-[|#endif|]
-            CommitHelper();
-        }
-    }
-}
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+
+
+                        #define Debug
+                #undef Trace
+                    class PurchaseTransaction
+                    {
+                        void Commit()
+                        {
+                {|Cursor:[|#if|]|} Debug
+                            CheckConsistency();
+                #if Trace
+                                WriteToLog(this.ToString());
+                #else
+                            Exit();
+                #endif
+                [|#endif|]
+                            CommitHelper();
+                        }
+                    }
+                }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-
-
-        #define Debug
-#undef Trace
-    class PurchaseTransaction
-    {
-        void Commit()
-        {
-[|#if|] Debug
-            CheckConsistency();
-#if Trace
-                WriteToLog(this.ToString());
-#else
-            Exit();
-#endif
-{|Cursor:[|#endif|]|}
-            CommitHelper();
-        }
-    }
-}
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+
+
+                        #define Debug
+                #undef Trace
+                    class PurchaseTransaction
+                    {
+                        void Commit()
+                        {
+                [|#if|] Debug
+                            CheckConsistency();
+                #if Trace
+                                WriteToLog(this.ToString());
+                #else
+                            Exit();
+                #endif
+                {|Cursor:[|#endif|]|}
+                            CommitHelper();
+                        }
+                    }
+                }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-
-
-        #define Debug
-#undef Trace
-    class PurchaseTransaction
-    {
-        void Commit()
-        {
-#if Debug
-            CheckConsistency();
-{|Cursor:[|#if|]|} Trace
-                WriteToLog(this.ToString());
-[|#else|]
-            Exit();
-[|#endif|]
-#endif
-            CommitHelper();
-        }
-    }
-}
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+
+
+                        #define Debug
+                #undef Trace
+                    class PurchaseTransaction
+                    {
+                        void Commit()
+                        {
+                #if Debug
+                            CheckConsistency();
+                {|Cursor:[|#if|]|} Trace
+                                WriteToLog(this.ToString());
+                [|#else|]
+                            Exit();
+                [|#endif|]
+                #endif
+                            CommitHelper();
+                        }
+                    }
+                }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-
-
-        #define Debug
-#undef Trace
-    class PurchaseTransaction
-    {
-        void Commit()
-        {
-#if Debug
-            CheckConsistency();
-[|#if|] Trace
-                WriteToLog(this.ToString());
-{|Cursor:[|#else|]|}
-            Exit();
-[|#endif|]
-#endif
-            CommitHelper();
-        }
-    }
-}
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+
+
+                        #define Debug
+                #undef Trace
+                    class PurchaseTransaction
+                    {
+                        void Commit()
+                        {
+                #if Debug
+                            CheckConsistency();
+                [|#if|] Trace
+                                WriteToLog(this.ToString());
+                {|Cursor:[|#else|]|}
+                            Exit();
+                [|#endif|]
+                #endif
+                            CommitHelper();
+                        }
+                    }
+                }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-
-
-        #define Debug
-#undef Trace
-    class PurchaseTransaction
-    {
-        void Commit()
-        {
-#if Debug
-            CheckConsistency();
-[|#if|] Trace
-                WriteToLog(this.ToString());
-[|#else|]
-            Exit();
-{|Cursor:[|#endif|]|}
-#endif
-            CommitHelper();
-        }
-    }
-}
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+
+
+                        #define Debug
+                #undef Trace
+                    class PurchaseTransaction
+                    {
+                        void Commit()
+                        {
+                #if Debug
+                            CheckConsistency();
+                [|#if|] Trace
+                                WriteToLog(this.ToString());
+                [|#else|]
+                            Exit();
+                {|Cursor:[|#endif|]|}
+                #endif
+                            CommitHelper();
+                        }
+                    }
+                }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample4_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-#define Goo1
-#define Goo2
+                """
+                class C
+                {
+                    void M()
+                    {
+                #define Goo1
+                #define Goo2
 
-{|Cursor:[|#if|]|} Goo1
+                {|Cursor:[|#if|]|} Goo1
 
-[|#elif|] Goo2
+                [|#elif|] Goo2
 
-[|#else|]
+                [|#else|]
 
-[|#endif|]
-    }
-}");
+                [|#endif|]
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample4_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-#define Goo1
-#define Goo2
+                """
+                class C
+                {
+                    void M()
+                    {
+                #define Goo1
+                #define Goo2
 
-[|#if|] Goo1
+                [|#if|] Goo1
 
-{|Cursor:[|#elif|]|} Goo2
+                {|Cursor:[|#elif|]|} Goo2
 
-[|#else|]
+                [|#else|]
 
-[|#endif|]
-    }
-}");
+                [|#endif|]
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample4_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-#define Goo1
-#define Goo2
+                """
+                class C
+                {
+                    void M()
+                    {
+                #define Goo1
+                #define Goo2
 
-[|#if|] Goo1
+                [|#if|] Goo1
 
-[|#elif|] Goo2
+                [|#elif|] Goo2
 
-{|Cursor:[|#else|]|}
+                {|Cursor:[|#else|]|}
 
-[|#endif|]
-    }
-}");
+                [|#endif|]
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample4_4()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-#define Goo1
-#define Goo2
+                """
+                class C
+                {
+                    void M()
+                    {
+                #define Goo1
+                #define Goo2
 
-[|#if|] Goo1
+                [|#if|] Goo1
 
-[|#elif|] Goo2
+                [|#elif|] Goo2
 
-[|#else|]
+                [|#else|]
 
-{|Cursor:[|#endif|]|}
-    }
-}");
+                {|Cursor:[|#endif|]|}
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/IfStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/IfStatementHighlighterTests.cs
index ba44ae385d50b..9e1117c4c6759 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/IfStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/IfStatementHighlighterTests.cs
@@ -22,666 +22,718 @@ internal override Type GetHighlighterType()
         public async Task TestIfStatementWithIfAndSingleElse1()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        {|Cursor:[|if|]|} (a < 5)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        {|Cursor:[|if|]|} (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithIfAndSingleElse2()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithIfAndElseIfAndElse1()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        {|Cursor:[|if|]|} (a < 5)
-        {
-            // blah
-        }
-        [|else if|] (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        {|Cursor:[|if|]|} (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithIfAndElseIfAndElse2()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        {|Cursor:[|else if|]|} (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else if|]|} (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithIfAndElseIfAndElse3()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        [|else if|] (a == 10)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithElseIfOnDifferentLines1()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        {|Cursor:[|if|]|} (a < 5)
-        {
-            // blah
-        }
-        [|else|]
-        [|if|] (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        {|Cursor:[|if|]|} (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        [|if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithElseIfOnDifferentLines2()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}
-        [|if|] (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}
+                        [|if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithElseIfOnDifferentLines3()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        [|else|]
-        {|Cursor:[|if|]|} (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {|Cursor:[|if|]|} (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithElseIfOnDifferentLines4()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        [|else|]
-        [|if|] (a == 10)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        [|if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithIfAndElseIfAndElseTouching1()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        {|Cursor:[|if|]|}(a < 5)
-        {
-            // blah
-        }
-        [|else if|](a == 10)
-        {
-            // blah
-        }
-        [|else|]{
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        {|Cursor:[|if|]|}(a < 5)
+                        {
+                            // blah
+                        }
+                        [|else if|](a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]{
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithIfAndElseIfAndElseTouching2()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|](a < 5)
-        {
-            // blah
-        }
-        {|Cursor:[|else if|]|}(a == 10)
-        {
-            // blah
-        }
-        [|else|]{
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|](a < 5)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else if|]|}(a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]{
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIfStatementWithIfAndElseIfAndElseTouching3()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|](a < 5)
-        {
-            // blah
-        }
-        [|else if|](a == 10)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}{
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|](a < 5)
+                        {
+                            // blah
+                        }
+                        [|else if|](a == 10)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}{
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExtraSpacesBetweenElseAndIf1()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        {|Cursor:[|if|]|} (a < 5)
-        {
-            // blah
-        }
-        [|else if|] (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        {|Cursor:[|if|]|} (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExtraSpacesBetweenElseAndIf2()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        {|Cursor:[|else if|]|} (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else if|]|} (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExtraSpacesBetweenElseAndIf3()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        [|else if|] (a == 10)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestCommentBetweenElseIf1()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        {|Cursor:[|if|]|} (a < 5)
-        {
-            // blah
-        }
-        [|else|] /* test */ [|if|] (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        {|Cursor:[|if|]|} (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else|] /* test */ [|if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestCommentBetweenElseIf2()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|} /* test */ [|if|] (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|} /* test */ [|if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestCommentBetweenElseIf3()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        [|else|] /* test */ {|Cursor:[|if|]|} (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else|] /* test */ {|Cursor:[|if|]|} (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestCommentBetweenElseIf4()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        [|if|] (a < 5)
-        {
-            // blah
-        }
-        [|else|] /* test */ [|if|] (a == 10)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                        }
+                        [|else|] /* test */ [|if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedIfDoesNotHighlight1()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        int b = 15;
-        {|Cursor:[|if|]|} (a < 5)
-        {
-            // blah
-            if (b < 15)
-                b = 15;
-            else
-                b = 14;
-        }
-        [|else if|] (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        int b = 15;
+                        {|Cursor:[|if|]|} (a < 5)
+                        {
+                            // blah
+                            if (b < 15)
+                                b = 15;
+                            else
+                                b = 14;
+                        }
+                        [|else if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedIfDoesNotHighlight2()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        int b = 15;
-        [|if|] (a < 5)
-        {
-            // blah
-            if (b < 15)
-                b = 15;
-            else
-                b = 14;
-        }
-        {|Cursor:[|else if|]|} (a == 10)
-        {
-            // blah
-        }
-        [|else|]
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        int b = 15;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                            if (b < 15)
+                                b = 15;
+                            else
+                                b = 14;
+                        }
+                        {|Cursor:[|else if|]|} (a == 10)
+                        {
+                            // blah
+                        }
+                        [|else|]
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedIfDoesNotHighlight3()
         {
             await TestAsync(
-@"public class C
-{
-    public void Goo()
-    {
-        int a = 10;
-        int b = 15;
-        [|if|] (a < 5)
-        {
-            // blah
-            if (b < 15)
-                b = 15;
-            else
-                b = 14;
-        }
-        [|else if|] (a == 10)
-        {
-            // blah
-        }
-        {|Cursor:[|else|]|}
-        {
-            // blah
-        }
-    }
-}");
+                """
+                public class C
+                {
+                    public void Goo()
+                    {
+                        int a = 10;
+                        int b = 15;
+                        [|if|] (a < 5)
+                        {
+                            // blah
+                            if (b < 15)
+                                b = 15;
+                            else
+                                b = 14;
+                        }
+                        [|else if|] (a == 10)
+                        {
+                            // blah
+                        }
+                        {|Cursor:[|else|]|}
+                        {
+                            // blah
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|if|]|} (x)
-        {
-            if (y)
-            {
-                F();
-            }
-            else if (z)
-            {
-                G();
-            }
-            else
-            {
-                H();
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|if|]|} (x)
+                        {
+                            if (y)
+                            {
+                                F();
+                            }
+                            else if (z)
+                            {
+                                G();
+                            }
+                            else
+                            {
+                                H();
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        if (x)
-        {
-            {|Cursor:[|if|]|} (y)
-            {
-                F();
-            }
-            [|else if|] (z)
-            {
-                G();
-            }
-            [|else|]
-            {
-                H();
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (x)
+                        {
+                            {|Cursor:[|if|]|} (y)
+                            {
+                                F();
+                            }
+                            [|else if|] (z)
+                            {
+                                G();
+                            }
+                            [|else|]
+                            {
+                                H();
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        if (x)
-        {
-            [|if|] (y)
-            {
-                F();
-            }
-            {|Cursor:[|else if|]|} (z)
-            {
-                G();
-            }
-            [|else|]
-            {
-                H();
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (x)
+                        {
+                            [|if|] (y)
+                            {
+                                F();
+                            }
+                            {|Cursor:[|else if|]|} (z)
+                            {
+                                G();
+                            }
+                            [|else|]
+                            {
+                                H();
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        if (x)
-        {
-            [|if|] (y)
-            {
-                F();
-            }
-            [|else if|] (z)
-            {
-                G();
-            }
-            {|Cursor:[|else|]|}
-            {
-                H();
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        if (x)
+                        {
+                            [|if|] (y)
+                            {
+                                F();
+                            }
+                            [|else if|] (z)
+                            {
+                                G();
+                            }
+                            {|Cursor:[|else|]|}
+                            {
+                                H();
+                            }
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/LockStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/LockStatementHighlighterTests.cs
index ef8642a61f3c0..962334c89d256 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/LockStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/LockStatementHighlighterTests.cs
@@ -21,27 +21,29 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class Account
-{
-    object lockObj = new object();
-    int balance;
+                """
+                class Account
+                {
+                    object lockObj = new object();
+                    int balance;
 
-    int Withdraw(int amount)
-    {
-        {|Cursor:[|lock|]|} (lockObj)
-        {
-            if (balance >= amount)
-            {
-                balance = balance – amount;
-                return amount;
-            }
-            else
-            {
-                return -1;
-            }
-        }
-    }
-}");
+                    int Withdraw(int amount)
+                    {
+                        {|Cursor:[|lock|]|} (lockObj)
+                        {
+                            if (balance >= amount)
+                            {
+                                balance = balance – amount;
+                                return amount;
+                            }
+                            else
+                            {
+                                return -1;
+                            }
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/LoopHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/LoopHighlighterTests.cs
index 88d79d188c2ed..04bf3058ca4d6 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/LoopHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/LoopHighlighterTests.cs
@@ -22,687 +22,733 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|while|]|} (true)
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|while|]|} (true)
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|while|] (true)
-        {
-            if (x)
-            {
-                {|Cursor:[|break|]|};
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|while|] (true)
+                        {
+                            if (x)
+                            {
+                                {|Cursor:[|break|]|};
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|while|] (true)
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                {|Cursor:[|continue|]|};
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|while|] (true)
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                {|Cursor:[|continue|]|};
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|do|]|}
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-        [|while|] (true);
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|do|]|}
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                        [|while|] (true);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|do|]
-        {
-            if (x)
-            {
-                {|Cursor:[|break|]|};
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-        [|while|] (true);
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|do|]
+                        {
+                            if (x)
+                            {
+                                {|Cursor:[|break|]|};
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                        [|while|] (true);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|do|]
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                {|Cursor:[|continue|]|};
-            }
-        }
-        [|while|] (true);
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|do|]
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                {|Cursor:[|continue|]|};
+                            }
+                        }
+                        [|while|] (true);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_4()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|do|]
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-        {|Cursor:[|while|]|} (true);
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|do|]
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                        {|Cursor:[|while|]|} (true);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_5()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        do
-        {
-            if (x)
-            {
-                break;
-            }
-            else
-            {
-                continue;
-            }
-        }
-        while {|Cursor:(true)|};
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        do
+                        {
+                            if (x)
+                            {
+                                break;
+                            }
+                            else
+                            {
+                                continue;
+                            }
+                        }
+                        while {|Cursor:(true)|};
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_6()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|do|]
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-        [|while|] (true);{|Cursor:|}
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|do|]
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                        [|while|] (true);{|Cursor:|}
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample3_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|for|]|} (int i = 0; i < 10; i++)
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|for|]|} (int i = 0; i < 10; i++)
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample3_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|for|] (int i = 0; i < 10; i++)
-        {
-            if (x)
-            {
-                {|Cursor:[|break|];|}
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|for|] (int i = 0; i < 10; i++)
+                        {
+                            if (x)
+                            {
+                                {|Cursor:[|break|];|}
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample3_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|for|] (int i = 0; i < 10; i++)
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                {|Cursor:[|continue|];|}
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|for|] (int i = 0; i < 10; i++)
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                {|Cursor:[|continue|];|}
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample4_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|foreach|]|} (var a in x)
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|foreach|]|} (var a in x)
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample4_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|foreach|] (var a in x)
-        {
-            if (x)
-            {
-                {|Cursor:[|break|];|}
-            }
-            else
-            {
-                [|continue|];
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|foreach|] (var a in x)
+                        {
+                            if (x)
+                            {
+                                {|Cursor:[|break|];|}
+                            }
+                            else
+                            {
+                                [|continue|];
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample4_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|foreach|] (var a in x)
-        {
-            if (x)
-            {
-                [|break|];
-            }
-            else
-            {
-                {|Cursor:[|continue|];|}
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|foreach|] (var a in x)
+                        {
+                            if (x)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                {|Cursor:[|continue|];|}
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|foreach|]|} (var a in x)
-        {
-            if (a)
-            {
-                [|break|];
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        {|Cursor:[|foreach|]|} (var a in x)
                         {
-                            do
+                            if (a)
+                            {
+                                [|break|];
+                            }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
                         }
-
-                        break;
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|foreach|] (var a in x)
-        {
-            if (a)
-            {
-                {|Cursor:[|break|];|}
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        [|foreach|] (var a in x)
                         {
-                            do
+                            if (a)
+                            {
+                                {|Cursor:[|break|];|}
+                            }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
                         }
-
-                        break;
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            {|Cursor:[|do|]|}
+                            if (a)
                             {
-                                [|break|];
+                                break;
+                            }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            {|Cursor:[|do|]|}
+                                            {
+                                                [|break|];
+                                            }
+                                            [|while|] (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
                             }
-                            [|while|] (false);
-                            break;
-                        }
 
-                        break;
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_4()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            [|do|]
+                            if (a)
                             {
-                                {|Cursor:[|break|];|}
+                                break;
+                            }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            [|do|]
+                                            {
+                                                {|Cursor:[|break|];|}
+                                            }
+                                            [|while|] (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
                             }
-                            [|while|] (false);
-                            break;
-                        }
 
-                        break;
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_5()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            [|do|]
+                            if (a)
+                            {
+                                break;
+                            }
+                            else
                             {
-                                [|break|];
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            [|do|]
+                                            {
+                                                [|break|];
+                                            }
+                                            {|Cursor:[|while|]|} (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
                             }
-                            {|Cursor:[|while|]|} (false);
-                            break;
-                        }
 
-                        break;
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_6()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            [|do|]
+                            if (a)
                             {
-                                [|break|];
+                                break;
+                            }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            [|do|]
+                                            {
+                                                [|break|];
+                                            }
+                                            [|while|] (false);{|Cursor:|}
+                                            break;
+                                        }
+
+                                        break;
+                                }
                             }
-                            [|while|] (false);{|Cursor:|}
-                            break;
-                        }
 
-                        break;
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_7()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        {|Cursor:[|while|]|} (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            [|break|];
-                        }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        {|Cursor:[|while|]|} (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            [|break|];
+                                        }
+
+                                        break;
+                                }
+                            }
 
-                        break;
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_8()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        [|while|] (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            {|Cursor:[|break|];|}
-                        }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        [|while|] (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            {|Cursor:[|break|];|}
+                                        }
+
+                                        break;
+                                }
+                            }
 
-                        break;
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         // TestNestedExample1 9-13 are in SwitchStatementHighlighterTests.cs
@@ -711,480 +757,506 @@ void M()
         public async Task TestNestedExample1_14()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
-                        }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
+                            }
 
-                        break;
+                            {|Cursor:[|for|]|} (int i = 0; i < 10; i++)
+                            {
+                                [|break|];
+                            }
+                        }
+                    }
                 }
-            }
-
-            {|Cursor:[|for|]|} (int i = 0; i < 10; i++)
-            {
-                [|break|];
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_15()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
-                        }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case 0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
+                            }
 
-                        break;
+                            [|for|] (int i = 0; i < 10; i++)
+                            {
+                                {|Cursor:[|break|];|}
+                            }
+                        }
+                    }
                 }
-            }
-
-            [|for|] (int i = 0; i < 10; i++)
-            {
-                {|Cursor:[|break|];|}
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|foreach|]|} (var a in x)
-        {
-            if (a)
-            {
-                [|continue|];
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    do
+                    void M()
                     {
-                        continue;
+                        {|Cursor:[|foreach|]|} (var a in x)
+                        {
+                            if (a)
+                            {
+                                [|continue|];
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    do
+                                    {
+                                        continue;
+                                    }
+                                    while (false);
+                                    continue;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    while (false);
-                    continue;
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|foreach|] (var a in x)
-        {
-            if (a)
-            {
-                {|Cursor:[|continue|];|}
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    do
+                    void M()
                     {
-                        continue;
+                        [|foreach|] (var a in x)
+                        {
+                            if (a)
+                            {
+                                {|Cursor:[|continue|];|}
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    do
+                                    {
+                                        continue;
+                                    }
+                                    while (false);
+                                    continue;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    while (false);
-                    continue;
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    {|Cursor:[|do|]|}
+                    void M()
                     {
-                        [|continue|];
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    {|Cursor:[|do|]|}
+                                    {
+                                        [|continue|];
+                                    }
+                                    [|while|] (false);
+                                    continue;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    [|while|] (false);
-                    continue;
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_4()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    [|do|]
+                    void M()
                     {
-                        {|Cursor:[|continue|];|}
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    [|do|]
+                                    {
+                                        {|Cursor:[|continue|];|}
+                                    }
+                                    [|while|] (false);
+                                    continue;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    [|while|] (false);
-                    continue;
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_5()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    [|do|]
+                    void M()
                     {
-                        [|continue|];
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    [|do|]
+                                    {
+                                        [|continue|];
+                                    }
+                                    {|Cursor:[|while|]|} (false);
+                                    continue;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    {|Cursor:[|while|]|} (false);
-                    continue;
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_6()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    do
+                    void M()
                     {
-                        continue;
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    do
+                                    {
+                                        continue;
+                                    }
+                                    while {|Cursor:(false)|};
+                                    continue;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    while {|Cursor:(false)|};
-                    continue;
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_7()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    [|do|]
+                    void M()
                     {
-                        [|continue|];
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    [|do|]
+                                    {
+                                        [|continue|];
+                                    }
+                                    [|while|] (false);{|Cursor:|}
+                                    continue;
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    [|while|] (false);{|Cursor:|}
-                    continue;
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_8()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                {|Cursor:[|while|]|} (true)
+                """
+                class C
                 {
-                    do
+                    void M()
                     {
-                        continue;
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                {|Cursor:[|while|]|} (true)
+                                {
+                                    do
+                                    {
+                                        continue;
+                                    }
+                                    while (false);
+                                    [|continue|];
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    while (false);
-                    [|continue|];
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_9()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                [|while|] (true)
+                """
+                class C
                 {
-                    do
+                    void M()
                     {
-                        continue;
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                [|while|] (true)
+                                {
+                                    do
+                                    {
+                                        continue;
+                                    }
+                                    while (false);
+                                    {|Cursor:[|continue|];|}
+                                }
+                            }
+
+                            for (int i = 0; i < 10; i++)
+                            {
+                                continue;
+                            }
+                        }
                     }
-                    while (false);
-                    {|Cursor:[|continue|];|}
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                continue;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_10()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    do
+                    void M()
                     {
-                        continue;
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    do
+                                    {
+                                        continue;
+                                    }
+                                    while (false);
+                                    continue;
+                                }
+                            }
+
+                            {|Cursor:[|for|]|} (int i = 0; i < 10; i++)
+                            {
+                                [|continue|];
+                            }
+                        }
                     }
-                    while (false);
-                    continue;
                 }
-            }
-
-            {|Cursor:[|for|]|} (int i = 0; i < 10; i++)
-            {
-                [|continue|];
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample2_11()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                continue;
-            }
-            else
-            {
-                while (true)
+                """
+                class C
                 {
-                    do
+                    void M()
                     {
-                        continue;
+                        foreach (var a in x)
+                        {
+                            if (a)
+                            {
+                                continue;
+                            }
+                            else
+                            {
+                                while (true)
+                                {
+                                    do
+                                    {
+                                        continue;
+                                    }
+                                    while (false);
+                                    continue;
+                                }
+                            }
+
+                            [|for|] (int i = 0; i < 10; i++)
+                            {
+                                {|Cursor:[|continue|];|}
+                            }
+                        }
                     }
-                    while (false);
-                    continue;
                 }
-            }
-
-            [|for|] (int i = 0; i < 10; i++)
-            {
-                {|Cursor:[|continue|];|}
-            }
-        }
-    }
-}");
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/RegionHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/RegionHighlighterTests.cs
index 13255702bfb61..e821b6dbe4acb 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/RegionHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/RegionHighlighterTests.cs
@@ -22,92 +22,104 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    {|Cursor:[|#region|]|} Main
-    static void Main()
-    {
-    }
-    [|#endregion|]
-}");
+                """
+                class C
+                {
+                    {|Cursor:[|#region|]|} Main
+                    static void Main()
+                    {
+                    }
+                    [|#endregion|]
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    [|#region|] Main
-    static void Main()
-    {
-    }
-    {|Cursor:[|#endregion|]|}
-}");
+                """
+                class C
+                {
+                    [|#region|] Main
+                    static void Main()
+                    {
+                    }
+                    {|Cursor:[|#endregion|]|}
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    {|Cursor:[|#region|]|} Main
-    static void Main()
-    {
-        #region body
-        #endregion
-    }
-    [|#endregion|]
-}");
+                """
+                class C
+                {
+                    {|Cursor:[|#region|]|} Main
+                    static void Main()
+                    {
+                        #region body
+                        #endregion
+                    }
+                    [|#endregion|]
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    #region Main
-    static void Main()
-    {
-        {|Cursor:[|#region|]|} body
-        [|#endregion|]
-    }
-    #endregion
-}");
+                """
+                class C
+                {
+                    #region Main
+                    static void Main()
+                    {
+                        {|Cursor:[|#region|]|} body
+                        [|#endregion|]
+                    }
+                    #endregion
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_3()
         {
             await TestAsync(
-@"class C
-{
-    #region Main
-    static void Main()
-    {
-        [|#region|] body
-        {|Cursor:[|#endregion|]|}
-    }
-    #endregion
-}");
+                """
+                class C
+                {
+                    #region Main
+                    static void Main()
+                    {
+                        [|#region|] body
+                        {|Cursor:[|#endregion|]|}
+                    }
+                    #endregion
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_4()
         {
             await TestAsync(
-@"class C
-{
-    [|#region|] Main
-    static void Main()
-    {
-        #region body
-        #endregion
-    }
-    {|Cursor:[|#endregion|]|}
-}");
+                """
+                class C
+                {
+                    [|#region|] Main
+                    static void Main()
+                    {
+                        #region body
+                        #endregion
+                    }
+                    {|Cursor:[|#endregion|]|}
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/ReturnStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/ReturnStatementHighlighterTests.cs
index defa71d3c38ec..7bfeb9914243a 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/ReturnStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/ReturnStatementHighlighterTests.cs
@@ -22,454 +22,500 @@ internal override Type GetHighlighterType()
         public async Task TestInLambda()
         {
             await TestAsync(
-@"static double CalculateArea(double radius)
-{
-    Func<double, double> f = r => {
-        if (Double.IsNan(r))
-        {
-            {|Cursor:[|return|]|} Double.NaN;
-        }
-        else
-        {
-            [|return|] r * r * Math.PI;
-        }
-    };
-    return calcArea(radius);
-}");
+                """
+                static double CalculateArea(double radius)
+                {
+                    Func<double, double> f = r => {
+                        if (Double.IsNan(r))
+                        {
+                            {|Cursor:[|return|]|} Double.NaN;
+                        }
+                        else
+                        {
+                            [|return|] r * r * Math.PI;
+                        }
+                    };
+                    return calcArea(radius);
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInLambda_NotOnReturnValue()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                return {|Cursor:Double.NaN|};
-            }
-            else
-            {
-                return r * r * Math.PI;
-            }
-        };
-        return calcArea(radius);
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                return {|Cursor:Double.NaN|};
+                            }
+                            else
+                            {
+                                return r * r * Math.PI;
+                            }
+                        };
+                        return calcArea(radius);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInLambda_OnSemicolon()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                [|return|] Double.NaN;{|Cursor:|}
-            }
-            else
-            {
-                [|return|] r * r * Math.PI;
-            }
-        };
-        return calcArea(radius);
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                [|return|] Double.NaN;{|Cursor:|}
+                            }
+                            else
+                            {
+                                [|return|] r * r * Math.PI;
+                            }
+                        };
+                        return calcArea(radius);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInLambda_SecondOccurence()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                [|return|] Double.NaN;
-            }
-            else
-            {
-                {|Cursor:[|return|]|} r * r * Math.PI;
-            }
-        };
-        return calcArea(radius);
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                [|return|] Double.NaN;
+                            }
+                            else
+                            {
+                                {|Cursor:[|return|]|} r * r * Math.PI;
+                            }
+                        };
+                        return calcArea(radius);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInLambda_SecondOccurence_NotOnReturnValue()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                return Double.NaN;
-            }
-            else
-            {
-                return {|Cursor:r * r * Math.PI|};
-            }
-        };
-        return calcArea(radius);
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                return Double.NaN;
+                            }
+                            else
+                            {
+                                return {|Cursor:r * r * Math.PI|};
+                            }
+                        };
+                        return calcArea(radius);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInLambda_SecondOccurence_OnSemicolon()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                [|return|] Double.NaN;
-            }
-            else
-            {
-                [|return|] r * r * Math.PI;{|Cursor:|}
-            }
-        };
-        return calcArea(radius);
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                [|return|] Double.NaN;
+                            }
+                            else
+                            {
+                                [|return|] r * r * Math.PI;{|Cursor:|}
+                            }
+                        };
+                        return calcArea(radius);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInMethodWithLambda()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                return Double.NaN;
-            }
-            else
-            {
-                return r * r * Math.PI;
-            }
-        };
-        {|Cursor:[|return|]|} calcArea(radius);
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                return Double.NaN;
+                            }
+                            else
+                            {
+                                return r * r * Math.PI;
+                            }
+                        };
+                        {|Cursor:[|return|]|} calcArea(radius);
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInMethodWithLambda_NotOnReturnValue()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                return Double.NaN;
-            }
-            else
-            {
-                return r * r * Math.PI;
-            }
-        };
-        return {|Cursor:calcArea(radius)|};
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                return Double.NaN;
+                            }
+                            else
+                            {
+                                return r * r * Math.PI;
+                            }
+                        };
+                        return {|Cursor:calcArea(radius)|};
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInMethodWithLambda_OnSemicolon()
         {
             await TestAsync(
-@"class C
-{
-    static double CalculateArea(double radius)
-    {
-        Func<double, double> f = r => {
-            if (Double.IsNan(r))
-            {
-                return Double.NaN;
-            }
-            else
-            {
-                return r * r * Math.PI;
-            }
-        };
-        [|return|] calcArea(radius);{|Cursor:|}
-    }
-}");
+                """
+                class C
+                {
+                    static double CalculateArea(double radius)
+                    {
+                        Func<double, double> f = r => {
+                            if (Double.IsNan(r))
+                            {
+                                return Double.NaN;
+                            }
+                            else
+                            {
+                                return r * r * Math.PI;
+                            }
+                        };
+                        [|return|] calcArea(radius);{|Cursor:|}
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInConstructor()
         {
             await TestAsync(
-@"class C
-{
-    C()
-    {
-        {|Cursor:[|return|]|};
-        [|return|];
-    }
-}");
+                """
+                class C
+                {
+                    C()
+                    {
+                        {|Cursor:[|return|]|};
+                        [|return|];
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInDestructor()
         {
             await TestAsync(
-@"class C
-{
-    ~C()
-    {
-        {|Cursor:[|return|]|};
-        [|return|];
-    }
-}");
+                """
+                class C
+                {
+                    ~C()
+                    {
+                        {|Cursor:[|return|]|};
+                        [|return|];
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInOperator()
         {
             await TestAsync(
-@"class C
-{
-    public static string operator +(C a)
-    {
-        {|Cursor:[|return|]|} null;
-        [|return|] null;
-    }
-}");
+                """
+                class C
+                {
+                    public static string operator +(C a)
+                    {
+                        {|Cursor:[|return|]|} null;
+                        [|return|] null;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInConversionOperator()
         {
             await TestAsync(
-@"class C
-{
-    public static explicit operator string(C a)
-    {
-        {|Cursor:[|return|]|} null;
-        [|return|] null;
-    }
-}");
+                """
+                class C
+                {
+                    public static explicit operator string(C a)
+                    {
+                        {|Cursor:[|return|]|} null;
+                        [|return|] null;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInGetter()
         {
             await TestAsync(
-@"class C
-{
-    int P
-    {
-        get
-        {
-            {|Cursor:[|return|]|} 0;
-            [|return|] 0;
-        }
-        set
-        {
-            return;
-            return;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    int P
+                    {
+                        get
+                        {
+                            {|Cursor:[|return|]|} 0;
+                            [|return|] 0;
+                        }
+                        set
+                        {
+                            return;
+                            return;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInSetter()
         {
             await TestAsync(
-@"class C
-{
-    int P
-    {
-        get
-        {
-            return 0;
-            return 0;
-        }
-        set
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    int P
+                    {
+                        get
+                        {
+                            return 0;
+                            return 0;
+                        }
+                        set
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInInit()
         {
             await TestAsync(
-@"class C
-{
-    int P
-    {
-        get
-        {
-            return 0;
-            return 0;
-        }
-        init
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    int P
+                    {
+                        get
+                        {
+                            return 0;
+                            return 0;
+                        }
+                        init
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInAdder()
         {
             await TestAsync(
-@"class C
-{
-    event EventHandler E
-    {
-        add
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        }
-        remove
-        {
-            return;
-            return;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    event EventHandler E
+                    {
+                        add
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        }
+                        remove
+                        {
+                            return;
+                            return;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInRemover()
         {
             await TestAsync(
-@"class C
-{
-    event EventHandler E
-    {
-        add
-        {
-            return;
-            return;
-        }
-        remove
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    event EventHandler E
+                    {
+                        add
+                        {
+                            return;
+                            return;
+                        }
+                        remove
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInLocalFunction()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        void F()
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        }
+                """
+                class C
+                {
+                    void M()
+                    {
+                        void F()
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        }
 
-        return;
-    }
-}");
+                        return;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInSimpleLambda()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        Action<string> f = s =>
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        };
+                """
+                class C
+                {
+                    void M()
+                    {
+                        Action<string> f = s =>
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        };
 
-        return;
-    }
-}");
+                        return;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInParenthesizedLambda()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        Action<string> f = (s) =>
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        };
+                """
+                class C
+                {
+                    void M()
+                    {
+                        Action<string> f = (s) =>
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        };
 
-        return;
-    }
-}");
+                        return;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInAnonymousMethod()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        Action<string> f = delegate
-        {
-            {|Cursor:[|return|]|};
-            [|return|];
-        };
+                """
+                class C
+                {
+                    void M()
+                    {
+                        Action<string> f = delegate
+                        {
+                            {|Cursor:[|return|]|};
+                            [|return|];
+                        };
 
-        return;
-    }
-}");
+                        return;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInTopLevelStatements()
         {
             await TestAsync(
-@"if (args.Length > 0) [|return|] 0;
-{|Cursor:[|return|]|} 1;");
+                """
+                if (args.Length > 0) [|return|] 0;
+                {|Cursor:[|return|]|} 1;
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/SwitchStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/SwitchStatementHighlighterTests.cs
index 6ad6dd151996d..3e72c921adbce 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/SwitchStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/SwitchStatementHighlighterTests.cs
@@ -23,800 +23,860 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_OnSwitchKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|switch|]|} (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                [|break|];
-            [|case|] 1:
-                CaseOne();
-                [|break|];
-            [|default|]:
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|switch|]|} (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                [|break|];
+                            [|case|] 1:
+                                CaseOne();
+                                [|break|];
+                            [|default|]:
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_OnCaseKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            {|Cursor:[|case|]|} 0:
-                CaseZero();
-                [|break|];
-            [|case|] 1:
-                CaseOne();
-                [|break|];
-            [|default|]:
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            {|Cursor:[|case|]|} 0:
+                                CaseZero();
+                                [|break|];
+                            [|case|] 1:
+                                CaseOne();
+                                [|break|];
+                            [|default|]:
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_AfterCaseColon()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            [|case|] 0:{|Cursor:|}
-                CaseZero();
-                [|break|];
-            [|case|] 1:
-                CaseOne();
-                [|break|];
-            [|default|]:
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:{|Cursor:|}
+                                CaseZero();
+                                [|break|];
+                            [|case|] 1:
+                                CaseOne();
+                                [|break|];
+                            [|default|]:
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_NotOnCaseValue()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        switch (i)
-        {
-            case {|Cursor:0|}:
-                CaseZero();
-                break;
-            case 1:
-                CaseOne();
-                break;
-            default:
-                CaseOthers();
-                break;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        switch (i)
+                        {
+                            case {|Cursor:0|}:
+                                CaseZero();
+                                break;
+                            case 1:
+                                CaseOne();
+                                break;
+                            default:
+                                CaseOthers();
+                                break;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_OnBreakStatement()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                {|Cursor:[|break|];|}
-            [|case|] 1:
-                CaseOne();
-                [|break|];
-            [|default|]:
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                {|Cursor:[|break|];|}
+                            [|case|] 1:
+                                CaseOne();
+                                [|break|];
+                            [|default|]:
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_OnDefaultLabel()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                [|break|];
-            [|case|] 1:
-                CaseOne();
-                [|break|];
-            {|Cursor:[|default|]:|}
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                [|break|];
+                            [|case|] 1:
+                                CaseOne();
+                                [|break|];
+                            {|Cursor:[|default|]:|}
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_OnGotoCaseKeywords()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                {|Cursor:[|goto case|]|} 1;
-            [|case|] 1:
-                CaseOne();
-                [|goto default|];
-            [|default|]:
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                {|Cursor:[|goto case|]|} 1;
+                            [|case|] 1:
+                                CaseOne();
+                                [|goto default|];
+                            [|default|]:
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_AfterGotoCaseSemicolon()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                [|goto case|] 1;{|Cursor:|}
-            [|case|] 1:
-                CaseOne();
-                [|goto default|];
-            [|default|]:
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                [|goto case|] 1;{|Cursor:|}
+                            [|case|] 1:
+                                CaseOne();
+                                [|goto default|];
+                            [|default|]:
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_NotOnGotoCaseValue()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        switch (i)
-        {
-            case 0:
-                CaseZero();
-                goto case {|Cursor:1|};
-            case 1:
-                CaseOne();
-                goto default;
-            default:
-                CaseOthers();
-                break;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        switch (i)
+                        {
+                            case 0:
+                                CaseZero();
+                                goto case {|Cursor:1|};
+                            case 1:
+                                CaseOne();
+                                goto default;
+                            default:
+                                CaseOthers();
+                                break;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample2_OnGotoDefaultStatement()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                [|goto case|] 1;
-            [|case|] 1:
-                CaseOne();
-                {|Cursor:[|goto default|];|}
-            [|default|]:
-                CaseOthers();
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                [|goto case|] 1;
+                            [|case|] 1:
+                                CaseOne();
+                                {|Cursor:[|goto default|];|}
+                            [|default|]:
+                                CaseOthers();
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_OnSwitchKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                {|Cursor:[|switch|]|} (b)
+                """
+                class C
                 {
-                    [|case|] 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
-                        }
+                            else
+                            {
+                                {|Cursor:[|switch|]|} (b)
+                                {
+                                    [|case|] 0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        [|break|];
+                                }
+                            }
 
-                        [|break|];
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_OnCaseKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                [|switch|] (b)
+                """
+                class C
                 {
-                    {|Cursor:[|case|]|} 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
-                        }
+                            else
+                            {
+                                [|switch|] (b)
+                                {
+                                    {|Cursor:[|case|]|} 0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        [|break|];
+                                }
+                            }
 
-                        [|break|];
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_NotBeforeCaseValue()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                switch (b)
+                """
+                class C
                 {
-                    case {|Cursor:|}0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
-                        }
+                            else
+                            {
+                                switch (b)
+                                {
+                                    case {|Cursor:|}0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        break;
+                                }
+                            }
 
-                        break;
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_AfterCaseColon()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                [|switch|] (b)
+                """
+                class C
                 {
-                    [|case|] 0:{|Cursor:|}
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
-                        }
+                            else
+                            {
+                                [|switch|] (b)
+                                {
+                                    [|case|] 0:{|Cursor:|}
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        [|break|];
+                                }
+                            }
 
-                        [|break|];
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestNestedExample1_OnBreakStatement()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        foreach (var a in x)
-        {
-            if (a)
-            {
-                break;
-            }
-            else
-            {
-                [|switch|] (b)
+                """
+                class C
                 {
-                    [|case|] 0:
-                        while (true)
+                    void M()
+                    {
+                        foreach (var a in x)
                         {
-                            do
+                            if (a)
                             {
                                 break;
                             }
-                            while (false);
-                            break;
-                        }
+                            else
+                            {
+                                [|switch|] (b)
+                                {
+                                    [|case|] 0:
+                                        while (true)
+                                        {
+                                            do
+                                            {
+                                                break;
+                                            }
+                                            while (false);
+                                            break;
+                                        }
+
+                                        {|Cursor:[|break|];|}
+                                }
+                            }
 
-                        {|Cursor:[|break|];|}
+                            for (int i = 0; i < 10; i++)
+                            {
+                                break;
+                            }
+                        }
+                    }
                 }
-            }
-
-            for (int i = 0; i < 10; i++)
-            {
-                break;
-            }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task Bug3483()
         {
             await TestAsync(
-@"class C
-{
-    static void M()
-    {
-        [|switch|] (2)
-        {
-            [|case|] 1:
-                {|Cursor:[|goto|]|}
-        }
-    }
-}");
+                """
+                class C
+                {
+                    static void M()
+                    {
+                        [|switch|] (2)
+                        {
+                            [|case|] 1:
+                                {|Cursor:[|goto|]|}
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithUnrelatedGotoStatement_OnGotoCaseGotoKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        label:
-        [|switch|] (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                [|{|Cursor:goto|} case|] 1;
-            [|case|] 1:
-                CaseOne();
-                [|goto default|];
-            [|default|]:
-                CaseOthers();
-                goto label;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        label:
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                [|{|Cursor:goto|} case|] 1;
+                            [|case|] 1:
+                                CaseOne();
+                                [|goto default|];
+                            [|default|]:
+                                CaseOthers();
+                                goto label;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithUnrelatedGotoStatement_OnGotoDefaultGotoKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        label:
-        [|switch|] (i)
-        {
-            [|case|] 0:
-                CaseZero();
-                [|goto case|] 1;
-            [|case|] 1:
-                CaseOne();
-                [|{|Cursor:goto|} default|];
-            [|default|]:
-                CaseOthers();
-                goto label;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        label:
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                                CaseZero();
+                                [|goto case|] 1;
+                            [|case|] 1:
+                                CaseOne();
+                                [|{|Cursor:goto|} default|];
+                            [|default|]:
+                                CaseOthers();
+                                goto label;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithUnrelatedGotoStatement_NotOnGotoLabelGotoKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        label:
-        switch (i)
-        {
-            case 0:
-                CaseZero();
-                goto case 1;
-            case 1:
-                CaseOne();
-                goto default;
-            default:
-                CaseOthers();
-                {|Cursor:goto|} label;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        label:
+                        switch (i)
+                        {
+                            case 0:
+                                CaseZero();
+                                goto case 1;
+                            case 1:
+                                CaseOne();
+                                goto default;
+                            default:
+                                CaseOthers();
+                                {|Cursor:goto|} label;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithNestedStatements_OnSwitchKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|switch|]|} (i)
-        {
-            [|case|] 0:
-            {
-                CaseZero();
-                [|goto case|] 1;
-            }
-            [|case|] 1:
-            {
-                CaseOne();
-                [|goto default|];
-            }
-            [|default|]:
-            {
-                CaseOthers();
-                [|break|];
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|switch|]|} (i)
+                        {
+                            [|case|] 0:
+                            {
+                                CaseZero();
+                                [|goto case|] 1;
+                            }
+                            [|case|] 1:
+                            {
+                                CaseOne();
+                                [|goto default|];
+                            }
+                            [|default|]:
+                            {
+                                CaseOthers();
+                                [|break|];
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithNestedStatements_OnBreakKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (i)
-        {
-            [|case|] 0:
-            {
-                CaseZero();
-                [|goto case|] 1;
-            }
-            [|case|] 1:
-            {
-                CaseOne();
-                [|goto default|];
-            }
-            [|default|]:
-            {
-                CaseOthers();
-                {|Cursor:[|break|]|};
-            }
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (i)
+                        {
+                            [|case|] 0:
+                            {
+                                CaseZero();
+                                [|goto case|] 1;
+                            }
+                            [|case|] 1:
+                            {
+                                CaseOne();
+                                [|goto default|];
+                            }
+                            [|default|]:
+                            {
+                                CaseOthers();
+                                {|Cursor:[|break|]|};
+                            }
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithGotoCaseAndBreakInsideLoop_OnSwitchKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|switch|]|} (true)
-        {
-            [|case|] true:
-                while (true)
+                """
+                class C
                 {
-                    [|goto case|] true;
-                    break;
-
-                    switch (true)
+                    void M()
                     {
-                        case true:
-                            goto case true;
-                            break;
+                        {|Cursor:[|switch|]|} (true)
+                        {
+                            [|case|] true:
+                                while (true)
+                                {
+                                    [|goto case|] true;
+                                    break;
+
+                                    switch (true)
+                                    {
+                                        case true:
+                                            goto case true;
+                                            break;
+                                    }
+                                }
+                        }
                     }
                 }
-        }
-    }
-}");
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithGotoCaseAndBreakInsideLoop_OnGotoCaseGotoKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (true)
-        {
-            [|case|] true:
-                while (true)
+                """
+                class C
                 {
-                    [|{|Cursor:goto|} case|] true;
-                    break;
-
-                    switch (true)
+                    void M()
                     {
-                        case true:
-                            goto case true;
-                            break;
+                        [|switch|] (true)
+                        {
+                            [|case|] true:
+                                while (true)
+                                {
+                                    [|{|Cursor:goto|} case|] true;
+                                    break;
+
+                                    switch (true)
+                                    {
+                                        case true:
+                                            goto case true;
+                                            break;
+                                    }
+                                }
+                        }
                     }
                 }
-        }
-    }
-}");
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25039")]
         public async Task TestWithGotoCaseAndBreakInsideLoop_NotOnLoopBreakKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        switch (true)
-        {
-            case true:
-                while (true)
+                """
+                class C
                 {
-                    goto case true;
-                    {|Cursor:break|};
-
-                    switch (true)
+                    void M()
                     {
-                        case true:
-                            goto case true;
-                            break;
+                        switch (true)
+                        {
+                            case true:
+                                while (true)
+                                {
+                                    goto case true;
+                                    {|Cursor:break|};
+
+                                    switch (true)
+                                    {
+                                        case true:
+                                            goto case true;
+                                            break;
+                                    }
+                                }
+                        }
                     }
                 }
-        }
-    }
-}");
+                """);
         }
 
         [Fact]
         public async Task TestWithWhenClauseAndPattern_OnSwitchKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|switch|]|} (true)
-        {
-            [|case|] true when true:
-                [|break|];
-            [|case|] bool b:
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|switch|]|} (true)
+                        {
+                            [|case|] true when true:
+                                [|break|];
+                            [|case|] bool b:
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestWithWhenClauseAndPattern_NotOnWhenKeyword()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        switch (true)
-        {
-            case true {|Cursor:when|} true:
-                break;
-            case bool b:
-                break;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        switch (true)
+                        {
+                            case true {|Cursor:when|} true:
+                                break;
+                            case bool b:
+                                break;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestWithWhenClauseAndPattern_AfterWhenCaseColon()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (true)
-        {
-            [|case|] true when true:{|Cursor:|}
-                [|break|];
-            [|case|] bool b:
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (true)
+                        {
+                            [|case|] true when true:{|Cursor:|}
+                                [|break|];
+                            [|case|] bool b:
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestWithWhenClauseAndPattern_AfterPatternCaseColon()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|switch|] (true)
-        {
-            [|case|] true when true:
-                [|break|];
-            [|case|] bool b:{|Cursor:|}
-                [|break|];
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|switch|] (true)
+                        {
+                            [|case|] true when true:
+                                [|break|];
+                            [|case|] bool b:{|Cursor:|}
+                                [|break|];
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestWithWhenClauseAndPattern_NotOnWhenValue()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        switch (true)
-        {
-            case true when {|Cursor:true|}:
-                break;
-            case bool b:
-                break;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        switch (true)
+                        {
+                            case true when {|Cursor:true|}:
+                                break;
+                            case bool b:
+                                break;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestWithWhenClauseAndPattern_NotOnPattern()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        switch (true)
-        {
-            case true when true:
-                break;
-            case {|Cursor:bool b|}:
-                break;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        switch (true)
+                        {
+                            case true when true:
+                                break;
+                            case {|Cursor:bool b|}:
+                                break;
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/TryStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/TryStatementHighlighterTests.cs
index b2d6861bcd9a2..684f7ea88ecbd 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/TryStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/TryStatementHighlighterTests.cs
@@ -22,168 +22,182 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|try|]|}
-        {
-            try
-            {
-            }
-            catch (Exception e)
-            {
-            }
-        }
-        [|finally|]
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|try|]|}
+                        {
+                            try
+                            {
+                            }
+                            catch (Exception e)
+                            {
+                            }
+                        }
+                        [|finally|]
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        try
-        {
-            {|Cursor:[|try|]|}
-            {
-            }
-            [|catch|] (Exception e)
-            {
-            }
-        }
-        finally
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        try
+                        {
+                            {|Cursor:[|try|]|}
+                            {
+                            }
+                            [|catch|] (Exception e)
+                            {
+                            }
+                        }
+                        finally
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        try
-        {
-            [|try|]
-            {
-            }
-            {|Cursor:[|catch|]|} (Exception e)
-            {
-            }
-        }
-        finally
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        try
+                        {
+                            [|try|]
+                            {
+                            }
+                            {|Cursor:[|catch|]|} (Exception e)
+                            {
+                            }
+                        }
+                        finally
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_4()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        [|try|]
-        {
-            try
-            {
-            }
-            catch (Exception e)
-            {
-            }
-        }
-        {|Cursor:[|finally|]|}
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        [|try|]
+                        {
+                            try
+                            {
+                            }
+                            catch (Exception e)
+                            {
+                            }
+                        }
+                        {|Cursor:[|finally|]|}
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExceptionFilter1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        try
-        {
-            {|Cursor:[|try|]|}
-            {
-            }
-            [|catch|] (Exception e) [|when|] (e != null)
-            {
-            }
-        }
-        finally
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        try
+                        {
+                            {|Cursor:[|try|]|}
+                            {
+                            }
+                            [|catch|] (Exception e) [|when|] (e != null)
+                            {
+                            }
+                        }
+                        finally
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExceptionFilter2()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        try
-        {
-            [|try|]
-            {
-            }
-            {|Cursor:[|catch|]|} (Exception e) [|when|] (e != null)
-            {
-            }
-        }
-        finally
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        try
+                        {
+                            [|try|]
+                            {
+                            }
+                            {|Cursor:[|catch|]|} (Exception e) [|when|] (e != null)
+                            {
+                            }
+                        }
+                        finally
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExceptionFilter3()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        try
-        {
-            [|try|]
-            {
-            }
-            [|catch|] (Exception e) {|Cursor:[|when|]|} (e != null)
-            {
-            }
-        }
-        finally
-        {
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        try
+                        {
+                            [|try|]
+                            {
+                            }
+                            [|catch|] (Exception e) {|Cursor:[|when|]|} (e != null)
+                            {
+                            }
+                        }
+                        finally
+                        {
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/UnsafeStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/UnsafeStatementHighlighterTests.cs
index 77df94e89c128..fbff553c660cd 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/UnsafeStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/UnsafeStatementHighlighterTests.cs
@@ -21,20 +21,22 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        int var1 = 5;
-        {|Cursor:[|unsafe|]|}
-        {
-            int* ptr1, ptr2;
-            ptr1 = &var1;
-            ptr2 = ptr1;
-            *ptr2 = 20;
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        int var1 = 5;
+                        {|Cursor:[|unsafe|]|}
+                        {
+                            int* ptr1, ptr2;
+                            ptr1 = &var1;
+                            ptr2 = ptr1;
+                            *ptr2 = 20;
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/UsingStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/UsingStatementHighlighterTests.cs
index 74ba97260300b..d65e8d19c554f 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/UsingStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/UsingStatementHighlighterTests.cs
@@ -21,16 +21,18 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    void M()
-    {
-        {|Cursor:[|using|]|} (Font f = new Font(“Arial”, 10.0f))
-        {
-            // use f...
-        }
-    }
-}");
+                """
+                class C
+                {
+                    void M()
+                    {
+                        {|Cursor:[|using|]|} (Font f = new Font(“Arial”, 10.0f))
+                        {
+                            // use f...
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/KeywordHighlighting/YieldStatementHighlighterTests.cs b/src/EditorFeatures/CSharpTest/KeywordHighlighting/YieldStatementHighlighterTests.cs
index 34870d661b6d8..666e8c0b63dd4 100644
--- a/src/EditorFeatures/CSharpTest/KeywordHighlighting/YieldStatementHighlighterTests.cs
+++ b/src/EditorFeatures/CSharpTest/KeywordHighlighting/YieldStatementHighlighterTests.cs
@@ -22,84 +22,92 @@ internal override Type GetHighlighterType()
         public async Task TestExample1_1()
         {
             await TestAsync(
-@"class C
-{
-    IEnumerable<int> Range(int min, int max)
-    {
-        while (true)
-        {
-            if (min >= max)
-            {
-                {|Cursor:[|yield break|];|}
-            }
+                """
+                class C
+                {
+                    IEnumerable<int> Range(int min, int max)
+                    {
+                        while (true)
+                        {
+                            if (min >= max)
+                            {
+                                {|Cursor:[|yield break|];|}
+                            }
 
-            [|yield return|] min++;
-        }
-    }
-}");
+                            [|yield return|] min++;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_2()
         {
             await TestAsync(
-@"class C
-{
-    IEnumerable<int> Range(int min, int max)
-    {
-        while (true)
-        {
-            if (min >= max)
-            {
-                [|yield break|];
-            }
+                """
+                class C
+                {
+                    IEnumerable<int> Range(int min, int max)
+                    {
+                        while (true)
+                        {
+                            if (min >= max)
+                            {
+                                [|yield break|];
+                            }
 
-            {|Cursor:[|yield return|]|} min++;
-        }
-    }
-}");
+                            {|Cursor:[|yield return|]|} min++;
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_3()
         {
             await TestAsync(
-@"class C
-{
-    IEnumerable<int> Range(int min, int max)
-    {
-        while (true)
-        {
-            if (min >= max)
-            {
-                yield break;
-            }
+                """
+                class C
+                {
+                    IEnumerable<int> Range(int min, int max)
+                    {
+                        while (true)
+                        {
+                            if (min >= max)
+                            {
+                                yield break;
+                            }
 
-            yield return {|Cursor:min++|};
-        }
-    }
-}");
+                            yield return {|Cursor:min++|};
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestExample1_4()
         {
             await TestAsync(
-@"class C
-{
-    IEnumerable<int> Range(int min, int max)
-    {
-        while (true)
-        {
-            if (min >= max)
-            {
-                [|yield break|];
-            }
+                """
+                class C
+                {
+                    IEnumerable<int> Range(int min, int max)
+                    {
+                        while (true)
+                        {
+                            if (min >= max)
+                            {
+                                [|yield break|];
+                            }
 
-            [|yield return|] min++;{|Cursor:|}
-        }
-    }
-}");
+                            [|yield return|] min++;{|Cursor:|}
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/LineSeparators/LineSeparatorTests.cs b/src/EditorFeatures/CSharpTest/LineSeparators/LineSeparatorTests.cs
index ba0ea1f02b8d7..4635307735516 100644
--- a/src/EditorFeatures/CSharpTest/LineSeparators/LineSeparatorTests.cs
+++ b/src/EditorFeatures/CSharpTest/LineSeparators/LineSeparatorTests.cs
@@ -28,433 +28,492 @@ public async Task TestEmptyFile()
         [Fact]
         public async Task TestEmptyClass()
         {
-            var file = @"class C
-{
-}";
+            var file = """
+                class C
+                {
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0);
         }
 
         [Fact]
         public async Task TestClassWithOneMethod()
         {
-            var file = @"class C
-{
-    void M()
-    {
-    }
-}";
+            var file = """
+                class C
+                {
+                    void M()
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 1);
         }
 
         [Fact]
         public async Task TestClassWithTwoMethods()
         {
-            var file = @"class C
-{
-    void M()
-    {
-    }
-
-    void N()
-    {
-    }
-}";
+            var file = """
+                class C
+                {
+                    void M()
+                    {
+                    }
+
+                    void N()
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task TestClassWithTwoNonEmptyMethods()
         {
-            var file = @"class C
-{
-    void M()
-    {
-        N();
-    }
-
-    void N()
-    {
-        M();
-    }
-}";
+            var file = """
+                class C
+                {
+                    void M()
+                    {
+                        N();
+                    }
+
+                    void N()
+                    {
+                        M();
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 1, 4);
         }
 
         [Fact]
         public async Task TestClassWithMethodAndField()
         {
-            var file = @"class C
-{
-    void M()
-    {
-    }
+            var file = """
+                class C
+                {
+                    void M()
+                    {
+                    }
 
-    int field;
-}";
+                    int field;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task TestEmptyNamespace()
         {
-            var file = @"namespace N
-{
-}";
+            var file = """
+                namespace N
+                {
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0);
         }
 
         [Fact]
         public async Task TestNamespaceAndClass()
         {
-            var file = @"namespace N
-{
-    class C
-    {
-    }
-}";
+            var file = """
+                namespace N
+                {
+                    class C
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 1);
         }
 
         [Fact]
         public async Task TestNamespaceAndTwoClasses()
         {
-            var file = @"namespace N
-{
-    class C
-    {
-    }
-
-    class D
-    {
-    }
-}";
+            var file = """
+                namespace N
+                {
+                    class C
+                    {
+                    }
+
+                    class D
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task TestNamespaceAndTwoClassesAndDelegate()
         {
-            var file = @"namespace N
-{
-    class C
-    {
-    }
+            var file = """
+                namespace N
+                {
+                    class C
+                    {
+                    }
 
-    class D
-    {
-    }
+                    class D
+                    {
+                    }
 
-    delegate void Del();
-}";
+                    delegate void Del();
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 1, 3);
         }
 
         [Fact]
         public async Task TestNestedClass()
         {
-            var file = @"class C
-{
-    class N
-    {
-    }
-}";
+            var file = """
+                class C
+                {
+                    class N
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 1);
         }
 
         [Fact]
         public async Task TestTwoNestedClasses()
         {
-            var file = @"class C
-{
-    class N
-    {
-    }
-
-    class N2
-    {
-    }
-}";
+            var file = """
+                class C
+                {
+                    class N
+                    {
+                    }
+
+                    class N2
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task TestStruct()
         {
-            var file = @"struct S
-{
-}";
+            var file = """
+                struct S
+                {
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0);
         }
 
         [Fact]
         public async Task TestInterface()
         {
-            var file = @"interface I
-{
-}";
+            var file = """
+                interface I
+                {
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0);
         }
 
         [Fact]
         public async Task TestEnum()
         {
-            var file = @"enum E
-{
-}";
+            var file = """
+                enum E
+                {
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0);
         }
 
         [Fact]
         public async Task TestProperty()
         {
-            var file = @"class C
-{
-    int Prop
-    {
-        get
-        {
-            return 0;
-        }
-        set
-        {
-        }
-    }
-}";
+            var file = """
+                class C
+                {
+                    int Prop
+                    {
+                        get
+                        {
+                            return 0;
+                        }
+                        set
+                        {
+                        }
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 4);
         }
 
         [Fact]
         public async Task TestPropertyAndField()
         {
-            var file = @"class C
-{
-    int Prop
-    {
-        get
-        {
-            return 0;
-        }
-        set
-        {
-        }
-    }
-
-    int field;
-}";
+            var file = """
+                class C
+                {
+                    int Prop
+                    {
+                        get
+                        {
+                            return 0;
+                        }
+                        set
+                        {
+                        }
+                    }
+
+                    int field;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 3, 5);
         }
 
         [Fact]
         public async Task TestClassWithFieldAndMethod()
         {
-            var file = @"class C
-{
-    int field;
+            var file = """
+                class C
+                {
+                    int field;
 
-    void M()
-    {
-    }
-}";
+                    void M()
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task UsingDirective()
         {
-            var file = @"using System;
+            var file = """
+                using System;
 
-class C
-{
-}";
+                class C
+                {
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 1);
         }
 
         [Fact]
         public async Task UsingDirectiveInNamespace()
         {
-            var file = @"namespace N
-{
-    using System;
+            var file = """
+                namespace N
+                {
+                    using System;
 
-    class C
-    {
-    }
-}";
+                    class C
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task UsingDirectiveInFileScopedNamespace()
         {
-            var file = @"namespace N;
+            var file = """
+                namespace N;
 
-using System;
+                using System;
 
-class C
-{
-}
-";
+                class C
+                {
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 1);
         }
 
         [Fact]
         public async Task PropertyStyleEventDeclaration()
         {
-            var file = @"class C
-{
-    event EventHandler E
-    {
-        add { }
-        remove { }
-    }
-
-    int i;
-}";
+            var file = """
+                class C
+                {
+                    event EventHandler E
+                    {
+                        add { }
+                        remove { }
+                    }
+
+                    int i;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 2, 4);
         }
 
         [Fact]
         public async Task IndexerDeclaration()
         {
-            var file = @"class C
-{
-    int this[int i]
-    {
-        get { return i; }
-        set { }
-    }
-
-    int i;
-}";
+            var file = """
+                class C
+                {
+                    int this[int i]
+                    {
+                        get { return i; }
+                        set { }
+                    }
+
+                    int i;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 3, 5);
         }
 
         [Fact]
         public async Task Constructor()
         {
-            var file = @"class C
-{
-    C()
-    {
-    }
+            var file = """
+                class C
+                {
+                    C()
+                    {
+                    }
 
-    int i;
-}";
+                    int i;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task Destructor()
         {
-            var file = @"class C
-{
-    ~C()
-    {
-    }
+            var file = """
+                class C
+                {
+                    ~C()
+                    {
+                    }
 
-    int i;
-}";
+                    int i;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task Operator()
         {
-            var file = @"class C
-{
-    static C operator +(C lhs, C rhs)
-    {
-    }
+            var file = """
+                class C
+                {
+                    static C operator +(C lhs, C rhs)
+                    {
+                    }
 
-    int i;
-}";
+                    int i;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task ConversionOperator()
         {
-            var file = @"class C
-{
-    static implicit operator C(int i)
-    {
-    }
+            var file = """
+                class C
+                {
+                    static implicit operator C(int i)
+                    {
+                    }
 
-    int i;
-}";
+                    int i;
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 0, 2);
         }
 
         [Fact]
         public async Task Bug930292()
         {
-            var file = @"class Program
-{
-void A() { }
-void B() { }
-void C() { }
-void D() { }
-}
-";
+            var file = """
+                class Program
+                {
+                void A() { }
+                void B() { }
+                void C() { }
+                void D() { }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 4);
         }
 
         [Fact]
         public async Task Bug930289()
         {
-            var file = @"namespace Roslyn.Compilers.CSharp
-{
-internal struct ArrayElement<T>
-{
-internal T Value;
-internal ArrayElement(T value) { this.Value = value; }
-public static implicit operator ArrayElement<T>(T value) { return new ArrayElement<T>(value); }
-}
-}
-";
+            var file = """
+                namespace Roslyn.Compilers.CSharp
+                {
+                internal struct ArrayElement<T>
+                {
+                internal T Value;
+                internal ArrayElement(T value) { this.Value = value; }
+                public static implicit operator ArrayElement<T>(T value) { return new ArrayElement<T>(value); }
+                }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 6);
         }
 
         [Fact]
         public async Task TestConsoleApp()
         {
-            var file = @"using System;
-using System.Collections.Generic;
-using System.Linq;
-
-class Program
-{
-    static void Main(string[] args)
-    {
-    }
-}";
+            var file = """
+                using System;
+                using System.Collections.Generic;
+                using System.Linq;
+
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                    }
+                }
+                """;
             await AssertTagsOnBracesOrSemicolonsAsync(file, 2, 4);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/1297")]
         public async Task ExpressionBodiedProperty()
         {
-            await AssertTagsOnBracesOrSemicolonsAsync(@"class C
-{
-    int Prop => 3;
+            await AssertTagsOnBracesOrSemicolonsAsync("""
+                class C
+                {
+                    int Prop => 3;
 
-    void M()
-    {
-    }
-}", 0, 2);
+                    void M()
+                    {
+                    }
+                }
+                """, 0, 2);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/1297")]
         public async Task ExpressionBodiedIndexer()
         {
-            await AssertTagsOnBracesOrSemicolonsAsync(@"class C
-{
-    int this[int i] => 3;
+            await AssertTagsOnBracesOrSemicolonsAsync("""
+                class C
+                {
+                    int this[int i] => 3;
 
-    void M()
-    {
-    }
-}", 0, 2);
+                    void M()
+                    {
+                    }
+                }
+                """, 0, 2);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/1297")]
@@ -462,14 +521,16 @@ public async Task ExpressionBodiedEvent()
         {
             // This is not valid code, and parses all wrong, but just in case a user writes it.  Note
             // the 3 is because there is a skipped } in the event declaration.
-            await AssertTagsOnBracesOrSemicolonsAsync(@"class C
-{
-    event EventHandler MyEvent => 3;
-
-    void M()
-    {
-    }
-}", 3);
+            await AssertTagsOnBracesOrSemicolonsAsync("""
+                class C
+                {
+                    event EventHandler MyEvent => 3;
+
+                    void M()
+                    {
+                    }
+                }
+                """, 3);
         }
 
         #region Negative (incomplete) tests
diff --git a/src/EditorFeatures/CSharpTest/MoveToNamespace/MoveToNamespaceTests.cs b/src/EditorFeatures/CSharpTest/MoveToNamespace/MoveToNamespaceTests.cs
index f690ca03f9247..e9eae057e927b 100644
--- a/src/EditorFeatures/CSharpTest/MoveToNamespace/MoveToNamespaceTests.cs
+++ b/src/EditorFeatures/CSharpTest/MoveToNamespace/MoveToNamespaceTests.cs
@@ -52,57 +52,66 @@ public class MoveToNamespaceTests : AbstractMoveToNamespaceTests
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretAboveNamespace()
             => TestMoveToNamespaceAsync(
-@"using System;
-[||]
-namespace A
-{
-    class MyClass
-    {
-    }
-}",
+                """
+                using System;
+                [||]
+                namespace A
+                {
+                    class MyClass
+                    {
+                    }
+                }
+                """,
 expectedSuccess: false);
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/59716")]
         public Task MoveToNamespace_MoveItems_CaretAboveNamespace_FileScopedNamespace()
             => TestMoveToNamespaceAsync(
-@"using System;
-[||]
-namespace A;
-
-class MyClass
-{
-}
-",
+                """
+                using System;
+                [||]
+                namespace A;
+
+                class MyClass
+                {
+                }
+                """,
 expectedSuccess: false);
 
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretAboveNamespace2()
             => TestMoveToNamespaceAsync(
-@"using System;[||]
-
-namespace A
-{
-    class MyClass
-    {
-    }
-}",
+                """
+                using System;[||]
+
+                namespace A
+                {
+                    class MyClass
+                    {
+                    }
+                }
+                """,
 expectedSuccess: false);
 
         [Fact]
         public Task MoveToNamespace_MoveItems_WeirdNamespace()
             => TestMoveToNamespaceAsync(
-@"namespace A  [||].    B   .   C
-{
-    class MyClass
-    {
-    }
-}",
-expectedMarkup: @"namespace {|Warning:A|}
-{
-    class MyClass
-    {
-    }
-}",
+                """
+                namespace A  [||].    B   .   C
+                {
+                    class MyClass
+                    {
+                    }
+                }
+                """,
+expectedMarkup: """
+                namespace {|Warning:A|}
+                {
+                    class MyClass
+                    {
+                    }
+                }
+                """,
 targetNamespace: "A",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -112,20 +121,24 @@ class MyClass
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretOnNamespaceName()
             => TestMoveToNamespaceAsync(
-@"namespace A[||] 
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
-expectedMarkup: @"namespace {|Warning:B|}
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
+                """
+                namespace A[||] 
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+                }
+                """,
+expectedMarkup: """
+                namespace {|Warning:B|}
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+                }
+                """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -135,20 +148,24 @@ void Method() { }
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretOnNamespaceName2()
             => TestMoveToNamespaceAsync(
-@"namespace A[||].B.C
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
-expectedMarkup: @"namespace {|Warning:B|}
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
+                """
+                namespace A[||].B.C
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+                }
+                """,
+expectedMarkup: """
+                namespace {|Warning:B|}
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+                }
+                """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -158,20 +175,24 @@ void Method() { }
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretOnNamespaceKeyword()
         => TestMoveToNamespaceAsync(
-@"namespace[||] A
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
-expectedMarkup: @"namespace {|Warning:B|}
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
+            """
+            namespace[||] A
+            {
+                class MyClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
+expectedMarkup: """
+            namespace {|Warning:B|}
+            {
+                class MyClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
     {
@@ -182,20 +203,24 @@ void Method() { }
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretOnNamespaceKeyword2()
         => TestMoveToNamespaceAsync(
-@"[||]namespace A
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
-expectedMarkup: @"namespace {|Warning:B|}
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
+            """
+            [||]namespace A
+            {
+                class MyClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
+expectedMarkup: """
+            namespace {|Warning:B|}
+            {
+                class MyClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
     {
@@ -205,66 +230,75 @@ void Method() { }
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretOnNamespaceBrace()
         => TestMoveToNamespaceAsync(
-@"namespace A
-[||]{
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
+            """
+            namespace A
+            [||]{
+                class MyClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
 expectedSuccess: false);
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/59716")]
         public Task MoveToNamespace_MoveItems_CaretAfterFileScopedNamespaceSemicolon()
         => TestMoveToNamespaceAsync(
-@"namespace A;  [||]
+            """
+            namespace A;  [||]
 
-class MyClass
-{
-    void Method() { }
-}
-",
+            class MyClass
+            {
+                void Method() { }
+            }
+            """,
 expectedSuccess: false);
 
         [Fact]
         public Task MoveToNamespace_MoveItems_CaretOnNamespaceBrace2()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{[||]
-    class MyClass
-    {
-        void Method() { }
-    }
-}",
+            """
+            namespace A
+            {[||]
+                class MyClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
 expectedSuccess: false);
 
         [Fact]
         public Task MoveToNamespace_MoveItems_MultipleDeclarations()
             => TestMoveToNamespaceAsync(
-@"namespace A[||] 
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-
-    class MyOtherClass
-    {
-        void Method() { }
-    }
-}",
-expectedMarkup: @"namespace {|Warning:B|}
-{
-    class MyClass
-    {
-        void Method() { }
-    }
-
-    class MyOtherClass
-    {
-        void Method() { }
-    }
-}",
+                """
+                namespace A[||] 
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+
+                    class MyOtherClass
+                    {
+                        void Method() { }
+                    }
+                }
+                """,
+expectedMarkup: """
+                namespace {|Warning:B|}
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+
+                    class MyOtherClass
+                    {
+                        void Method() { }
+                    }
+                }
+                """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -275,60 +309,64 @@ void Method() { }
         [Fact]
         public Task MoveToNamespace_MoveItems_WithVariousSymbols()
         => TestMoveToNamespaceAsync(
-@"namespace A[||] 
-{
-    public delegate void MyDelegate();
-
-    public enum MyEnum
-    {
-        One,
-        Two,
-        Three
-    }
-
-    public struct MyStruct
-    { }
-
-    public interface MyInterface
-    { }
-
-    class MyClass
-    {
-        void Method() { }
-    }
-
-    class MyOtherClass
-    {
-        void Method() { }
-    }
-}",
-expectedMarkup: @"namespace {|Warning:B|}
-{
-    public delegate void MyDelegate();
-
-    public enum MyEnum
-    {
-        One,
-        Two,
-        Three
-    }
-
-    public struct MyStruct
-    { }
-
-    public interface MyInterface
-    { }
-
-    class MyClass
-    {
-        void Method() { }
-    }
-
-    class MyOtherClass
-    {
-        void Method() { }
-    }
-}",
+            """
+            namespace A[||] 
+            {
+                public delegate void MyDelegate();
+
+                public enum MyEnum
+                {
+                    One,
+                    Two,
+                    Three
+                }
+
+                public struct MyStruct
+                { }
+
+                public interface MyInterface
+                { }
+
+                class MyClass
+                {
+                    void Method() { }
+                }
+
+                class MyOtherClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
+expectedMarkup: """
+            namespace {|Warning:B|}
+            {
+                public delegate void MyDelegate();
+
+                public enum MyEnum
+                {
+                    One,
+                    Two,
+                    Three
+                }
+
+                public struct MyStruct
+                { }
+
+                public interface MyInterface
+                { }
+
+                class MyClass
+                {
+                    void Method() { }
+                }
+
+                class MyOtherClass
+                {
+                    void Method() { }
+                }
+            }
+            """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -343,31 +381,35 @@ void Method() { }
         [Fact]
         public Task MoveToNamespace_MoveItems_NestedNamespace()
         => TestMoveToNamespaceAsync(
-@"namespace A[||]
-{
-    namespace C 
-    {
-        class MyClass
-        {
-            void Method() { }
-        }
-    }
-}",
+            """
+            namespace A[||]
+            {
+                namespace C 
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+                }
+            }
+            """,
 expectedSuccess: false);
 
         [Fact]
         public Task MoveToNamespace_MoveItems_NestedNamespace2()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    namespace C[||]
-    {
-        class MyClass
-        {
-            void Method() { }
-        }
-    }
-}",
+            """
+            namespace A
+            {
+                namespace C[||]
+                {
+                    class MyClass
+                    {
+                        void Method() { }
+                    }
+                }
+            }
+            """,
 expectedSuccess: false);
 
         [Theory]
@@ -465,31 +507,35 @@ namespace A
         [Fact]
         public Task MoveToNamespace_MoveType_TopWithReference()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    class MyClass[||] : IMyClass
-    {
-    }
+            """
+            namespace A
+            {
+                class MyClass[||] : IMyClass
+                {
+                }
 
-    interface IMyClass
-    {
-    }
-}",
-expectedMarkup: @"using A;
+                interface IMyClass
+                {
+                }
+            }
+            """,
+expectedMarkup: """
+            using A;
 
-namespace {|Warning:B|}
-{
-    class MyClass : IMyClass
-    {
-    }
-}
+            namespace {|Warning:B|}
+            {
+                class MyClass : IMyClass
+                {
+                }
+            }
 
-namespace A
-{
-    interface IMyClass
-    {
-    }
-}",
+            namespace A
+            {
+                interface IMyClass
+                {
+                }
+            }
+            """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -532,31 +578,35 @@ namespace {{|Warning:B|}}
         [Fact]
         public Task MoveToNamespace_MoveType_BottomReference()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
+            """
+            namespace A
+            {
+                class MyClass : IMyClass
+                {
+                }
 
-    interface IMyClass[||]
-    {
-    }
-}",
-expectedMarkup: @"using B;
+                interface IMyClass[||]
+                {
+                }
+            }
+            """,
+expectedMarkup: """
+            using B;
 
-namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
-}
+            namespace A
+            {
+                class MyClass : IMyClass
+                {
+                }
+            }
 
-namespace {|Warning:B|}
-{
-    interface IMyClass
-    {
-    }
-}",
+            namespace {|Warning:B|}
+            {
+                interface IMyClass
+                {
+                }
+            }
+            """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -742,58 +792,64 @@ namespace A
         [Fact]
         public Task MoveToNamespace_MoveType_CaretInMethod()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    class MyClass
-    {
-        public string [||]MyMethod
-        {
-            return "";
-        }
-    }
+            """
+            namespace A
+            {
+                class MyClass
+                {
+                    public string [||]MyMethod
+                    {
+                        return ";
+                    }
+                }
 
-}",
+            }
+            """,
 expectedSuccess: false);
 
         [Fact]
         public Task MoveToNamespace_MoveType_MiddleReference()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
+            """
+            namespace A
+            {
+                class MyClass : IMyClass
+                {
+                }
 
-    interface IMyClass[||]
-    {
-    }
+                interface IMyClass[||]
+                {
+                }
 
-    class MyClass3 : IMyClass
-    {
-    }
-}",
-expectedMarkup: @"using B;
+                class MyClass3 : IMyClass
+                {
+                }
+            }
+            """,
+expectedMarkup: """
+            using B;
 
-namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
-}
+            namespace A
+            {
+                class MyClass : IMyClass
+                {
+                }
+            }
 
-namespace {|Warning:B|}
-{
-    interface IMyClass
-    {
-    }
-}
+            namespace {|Warning:B|}
+            {
+                interface IMyClass
+                {
+                }
+            }
 
-namespace A
-{
-    class MyClass3 : IMyClass
-    {
-    }
-}",
+            namespace A
+            {
+                class MyClass3 : IMyClass
+                {
+                }
+            }
+            """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -803,50 +859,54 @@ class MyClass3 : IMyClass
         [Fact]
         public Task MoveToNamespace_MoveType_MiddleReference2()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
+            """
+            namespace A
+            {
+                class MyClass : IMyClass
+                {
+                }
 
-    interface IMyClass
-    {
-    }
+                interface IMyClass
+                {
+                }
 
-    class [||]MyClass3 : IMyClass
-    {
-    }
+                class [||]MyClass3 : IMyClass
+                {
+                }
 
-    class MyClass4
-    {
-    }
-}",
-expectedMarkup: @"using A;
+                class MyClass4
+                {
+                }
+            }
+            """,
+expectedMarkup: """
+            using A;
 
-namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
+            namespace A
+            {
+                class MyClass : IMyClass
+                {
+                }
 
-    interface IMyClass
-    {
-    }
-}
+                interface IMyClass
+                {
+                }
+            }
 
-namespace {|Warning:B|}
-{
-    class MyClass3 : IMyClass
-    {
-    }
-}
+            namespace {|Warning:B|}
+            {
+                class MyClass3 : IMyClass
+                {
+                }
+            }
 
-namespace A
-{
-    class MyClass4
-    {
-    }
-}",
+            namespace A
+            {
+                class MyClass4
+                {
+                }
+            }
+            """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -856,108 +916,118 @@ class MyClass4
         [Fact]
         public Task MoveToNamespace_MoveType_NestedInNamespace()
         => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    class MyClass
-    {
-    }
-
-    namespace B
-    {
-        interface [||]IMyClass
-        {
-        }
-    }
-
-    class MyClass2 : B.IMyClass
-    {
-    }
-}",
+            """
+            namespace A
+            {
+                class MyClass
+                {
+                }
+
+                namespace B
+                {
+                    interface [||]IMyClass
+                    {
+                    }
+                }
+
+                class MyClass2 : B.IMyClass
+                {
+                }
+            }
+            """,
 expectedSuccess: false);
 
         [Fact]
         public Task MoveToNamespace_MoveType_Cancelled()
             => TestCancelledOption(
-@"namespace A
-{
-    class MyClass
-    {
-    }
-
-    interface [||]IMyClass
-    {
-    }
-
-    class MyClass2 : B.IMyClass
-    {
-    }
-}");
+                """
+                namespace A
+                {
+                    class MyClass
+                    {
+                    }
+
+                    interface [||]IMyClass
+                    {
+                    }
+
+                    class MyClass2 : B.IMyClass
+                    {
+                    }
+                }
+                """);
 
         [Fact]
         public Task MoveToNamespace_MoveItems_Cancelled()
             => TestCancelledOption(
-@"namespace A[||]
-{
-    class MyClass
-    {
-    }
-
-    interface IMyClass
-    {
-    }
-
-    class MyClass2 : B.IMyClass
-    {
-    }
-}");
+                """
+                namespace A[||]
+                {
+                    class MyClass
+                    {
+                    }
+
+                    interface IMyClass
+                    {
+                    }
+
+                    class MyClass2 : B.IMyClass
+                    {
+                    }
+                }
+                """);
 
         [Fact]
         public Task MoveToNamespace_MoveType_MiddleReference_ComplexName()
         => TestMoveToNamespaceAsync(
-@"namespace A.B.C
-{
-    class MyClass : IMyClass
-    {
-    }
+            """
+            namespace A.B.C
+            {
+                class MyClass : IMyClass
+                {
+                }
 
-    interface IMyClass
-    {
-    }
+                interface IMyClass
+                {
+                }
 
-    class [||]MyClass3 : IMyClass
-    {
-    }
+                class [||]MyClass3 : IMyClass
+                {
+                }
 
-    class MyClass4
-    {
-    }
-}",
-expectedMarkup: @"using A.B.C;
+                class MyClass4
+                {
+                }
+            }
+            """,
+expectedMarkup: """
+            using A.B.C;
 
-namespace A.B.C
-{
-    class MyClass : IMyClass
-    {
-    }
+            namespace A.B.C
+            {
+                class MyClass : IMyClass
+                {
+                }
 
-    interface IMyClass
-    {
-    }
-}
+                interface IMyClass
+                {
+                }
+            }
 
-namespace {|Warning:My.New.Namespace|}
-{
-    class MyClass3 : IMyClass
-    {
-    }
-}
+            namespace {|Warning:My.New.Namespace|}
+            {
+                class MyClass3 : IMyClass
+                {
+                }
+            }
 
-namespace A.B.C
-{
-    class MyClass4
-    {
-    }
-}",
+            namespace A.B.C
+            {
+                class MyClass4
+                {
+                }
+            }
+            """,
 targetNamespace: "My.New.Namespace",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -967,50 +1037,54 @@ class MyClass4
         [Fact]
         public Task MoveToNamespace_MoveType_MiddleReference_ComplexName2()
        => TestMoveToNamespaceAsync(
-@"namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
-
-    interface IMyClass
-    {
-    }
-
-    class [||]MyClass3 : IMyClass
-    {
-    }
-
-    class MyClass4
-    {
-    }
-}",
-expectedMarkup: @"using A;
-
-namespace A
-{
-    class MyClass : IMyClass
-    {
-    }
-
-    interface IMyClass
-    {
-    }
-}
-
-namespace {|Warning:My.New.Namespace|}
-{
-    class MyClass3 : IMyClass
-    {
-    }
-}
-
-namespace A
-{
-    class MyClass4
-    {
-    }
-}",
+           """
+           namespace A
+           {
+               class MyClass : IMyClass
+               {
+               }
+
+               interface IMyClass
+               {
+               }
+
+               class [||]MyClass3 : IMyClass
+               {
+               }
+
+               class MyClass4
+               {
+               }
+           }
+           """,
+expectedMarkup: """
+           using A;
+
+           namespace A
+           {
+               class MyClass : IMyClass
+               {
+               }
+
+               interface IMyClass
+               {
+               }
+           }
+
+           namespace {|Warning:My.New.Namespace|}
+           {
+               class MyClass3 : IMyClass
+               {
+               }
+           }
+
+           namespace A
+           {
+               class MyClass4
+               {
+               }
+           }
+           """,
 targetNamespace: "My.New.Namespace",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -1020,50 +1094,54 @@ class MyClass4
         [Fact]
         public Task MoveToNamespace_MoveType_MiddleReference_ComplexName3()
        => TestMoveToNamespaceAsync(
-@"namespace A.B.C
-{
-    class MyClass : IMyClass
-    {
-    }
-
-    interface IMyClass
-    {
-    }
-
-    class [||]MyClass3 : IMyClass
-    {
-    }
-
-    class MyClass4
-    {
-    }
-}",
-expectedMarkup: @"using A.B.C;
-
-namespace A.B.C
-{
-    class MyClass : IMyClass
-    {
-    }
-
-    interface IMyClass
-    {
-    }
-}
-
-namespace {|Warning:B|}
-{
-    class MyClass3 : IMyClass
-    {
-    }
-}
-
-namespace A.B.C
-{
-    class MyClass4
-    {
-    }
-}",
+           """
+           namespace A.B.C
+           {
+               class MyClass : IMyClass
+               {
+               }
+
+               interface IMyClass
+               {
+               }
+
+               class [||]MyClass3 : IMyClass
+               {
+               }
+
+               class MyClass4
+               {
+               }
+           }
+           """,
+expectedMarkup: """
+           using A.B.C;
+
+           namespace A.B.C
+           {
+               class MyClass : IMyClass
+               {
+               }
+
+               interface IMyClass
+               {
+               }
+           }
+
+           namespace {|Warning:B|}
+           {
+               class MyClass3 : IMyClass
+               {
+               }
+           }
+
+           namespace A.B.C
+           {
+               class MyClass4
+               {
+               }
+           }
+           """,
 targetNamespace: "B",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -1073,82 +1151,94 @@ class MyClass4
         [Fact]
         public Task MoveToNamespace_Analysis_MoveItems_ComplexNamespace()
            => TestMoveToNamespaceAnalysisAsync(
-@"namespace [||]A.Complex.Namespace
-{
-    class MyClass
-    {
-    }
-}",
+               """
+               namespace [||]A.Complex.Namespace
+               {
+                   class MyClass
+                   {
+                   }
+               }
+               """,
 expectedNamespaceName: "A.Complex.Namespace");
 
         [Fact]
         public Task MoveToNamespace_Analysis_MoveType_ComplexNamespace()
            => TestMoveToNamespaceAnalysisAsync(
-@"namespace A.Complex.Namespace
-{
-    class [||]MyClass
-    {
-    }
-}",
+               """
+               namespace A.Complex.Namespace
+               {
+                   class [||]MyClass
+                   {
+                   }
+               }
+               """,
 expectedNamespaceName: "A.Complex.Namespace");
 
         [Fact]
         public Task MoveToNamespace_Analysis_MoveItems_WeirdNamespace()
            => TestMoveToNamespaceAnalysisAsync(
-@"namespace A  [||].    B   .   C
-{
-    class MyClass
-    {
-    }
-}",
+               """
+               namespace A  [||].    B   .   C
+               {
+                   class MyClass
+                   {
+                   }
+               }
+               """,
 expectedNamespaceName: "A  .    B   .   C");
 
         [Fact]
         public Task MoveToNamespace_Analysis_MoveType_WeirdNamespace()
            => TestMoveToNamespaceAnalysisAsync(
-@"namespace A  .    B   .   C
-{
-    class MyClass[||]
-    {
-    }
-}",
+               """
+               namespace A  .    B   .   C
+               {
+                   class MyClass[||]
+                   {
+                   }
+               }
+               """,
 expectedNamespaceName: "A  .    B   .   C");
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/34736")]
         public Task MoveToNamespace_MoveType_Usings()
             => TestMoveToNamespaceAsync(
-@"namespace One
-{
-    using Two;
-    class C1
-    {
-        private C2 c2;
-    }
-}
-
-namespace [||]Two
-{
-    class C2
-    {
-
-    }
-}",
-expectedMarkup: @"namespace One
-{
-    using Three;
-    class C1
-    {
-        private C2 c2;
-    }
-}
-
-namespace {|Warning:Three|}
-{
-    class C2
-    {
-
-    }
-}",
+                """
+                namespace One
+                {
+                    using Two;
+                    class C1
+                    {
+                        private C2 c2;
+                    }
+                }
+
+                namespace [||]Two
+                {
+                    class C2
+                    {
+
+                    }
+                }
+                """,
+expectedMarkup: """
+                namespace One
+                {
+                    using Three;
+                    class C1
+                    {
+                        private C2 c2;
+                    }
+                }
+
+                namespace {|Warning:Three|}
+                {
+                    class C2
+                    {
+
+                    }
+                }
+                """,
 targetNamespace: "Three",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
@@ -1158,13 +1248,15 @@ class C2
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35577")]
         public async Task MoveToNamespace_WithoutOptionsService()
         {
-            var code = @"namespace A[||]
-{
-class MyClass
-{
-    void Method() { }
-}
-}";
+            var code = """
+                namespace A[||]
+                {
+                class MyClass
+                {
+                    void Method() { }
+                }
+                }
+                """;
 
             using var workspace = TestWorkspace.CreateCSharp(code, composition: s_compositionWithoutOptions);
             using var testState = new TestState(workspace);
@@ -1236,82 +1328,92 @@ public Task MoveToNamespace_MoveOneTypeInGlobalNamespace(string typeKeyword)
         [Fact, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems/edit/980758")]
         public Task MoveToNamespace_PartialTypesInNamesapce_SelectType()
             => TestMoveToNamespaceAsync(
-@"namespace NS
-{
-    partial class MyClass[||]
-    {
-    }
-
-    partial class MyClass
-    {
-    }
-}",
+                """
+                namespace NS
+                {
+                    partial class MyClass[||]
+                    {
+                    }
+
+                    partial class MyClass
+                    {
+                    }
+                }
+                """,
     expectedSuccess: false);
 
         [Fact, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems/edit/980758")]
         public Task MoveToNamespace_PartialTypesInNamesapce_SelectNamespace()
             => TestMoveToNamespaceAsync(
-@"namespace NS[||]
-{
-    partial class MyClass
-    {
-    }
-
-    partial class MyClass
-    {
-    }
-}",
+                """
+                namespace NS[||]
+                {
+                    partial class MyClass
+                    {
+                    }
+
+                    partial class MyClass
+                    {
+                    }
+                }
+                """,
     expectedSuccess: false);
 
         [Fact, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems/edit/980758")]
         public Task MoveToNamespace_PartialTypesInGlobalNamesapce()
             => TestMoveToNamespaceAsync(
-@"partial class MyClass[||]
-{
-}
-partial class MyClass
-{
-}",
+                """
+                partial class MyClass[||]
+                {
+                }
+                partial class MyClass
+                {
+                }
+                """,
     expectedSuccess: false);
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/39234")]
         public async Task TestMultiTargetingProject()
         {
             // Create two projects with same project file path and single linked document to simulate a multi-targeting project.
-            var input = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" FilePath=""SharedProj.csproj"">
-        <Document FilePath=""CurrentDocument.cs"">
-namespace A
-{
-    public class Class1
-    {
-    }
-
-    public class Class2[||]
-    {
-    }
-}
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"" FilePath=""SharedProj.csproj"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""CurrentDocument.cs""/>
-    </Project>
-</Workspace>";
+            var input = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" FilePath="SharedProj.csproj">
+                        <Document FilePath="CurrentDocument.cs">
+                namespace A
+                {
+                    public class Class1
+                    {
+                    }
+
+                    public class Class2[||]
+                    {
+                    }
+                }
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2" FilePath="SharedProj.csproj">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="CurrentDocument.cs"/>
+                    </Project>
+                </Workspace>
+                """;
 
             var expected =
-@"namespace A
-{
-    public class Class1
-    {
-    }
-}
-
-namespace B
-{
-    public class Class2
-    {
-    }
-}";
+                """
+                namespace A
+                {
+                    public class Class1
+                    {
+                    }
+                }
+
+                namespace B
+                {
+                    public class Class2
+                    {
+                    }
+                }
+                """;
             using var workspace = TestWorkspace.Create(System.Xml.Linq.XElement.Parse(input), composition: s_composition, openDocuments: false);
 
             // Set the target namespace to "B"
@@ -1338,20 +1440,24 @@ public class Class2
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35507")]
         public Task MoveToNamespace_MoveTypeFromSystemNamespace()
             => TestMoveToNamespaceAsync(
-@"namespace System
-{
-    [||]class A
-    {
-
-    }
-}",
-expectedMarkup: @"namespace {|Warning:Test|}
-{
-    [||]class A
-    {
-
-    }
-}",
+                """
+                namespace System
+                {
+                    [||]class A
+                    {
+
+                    }
+                }
+                """,
+expectedMarkup: """
+                namespace {|Warning:Test|}
+                {
+                    [||]class A
+                    {
+
+                    }
+                }
+                """,
 targetNamespace: "Test",
 expectedSymbolChanges: new Dictionary<string, string>()
 {
diff --git a/src/EditorFeatures/CSharpTest/NavigateTo/NavigateToTests.cs b/src/EditorFeatures/CSharpTest/NavigateTo/NavigateToTests.cs
index 28c93b64e2df1..5ae7c2be30fe9 100644
--- a/src/EditorFeatures/CSharpTest/NavigateTo/NavigateToTests.cs
+++ b/src/EditorFeatures/CSharpTest/NavigateTo/NavigateToTests.cs
@@ -46,9 +46,11 @@ await TestAsync(testHost, composition, "", async w =>
         public async Task FindClass(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -60,9 +62,11 @@ await TestAsync(
         public async Task FindRecord(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"record Goo
+testHost, composition, """
+record Goo
 {
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -74,9 +78,11 @@ await TestAsync(
         public async Task FindRecordClass(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"record class Goo
+testHost, composition, """
+record class Goo
 {
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -87,17 +93,17 @@ await TestAsync(
         [CombinatorialData]
         public async Task FindRecordStruct(TestHost testHost, Composition composition)
         {
-            var content = XElement.Parse(@"
-<Workspace>
-    <Project Language=""C#""  LanguageVersion=""preview"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-record struct Goo
-{
-}
-        </Document>
-    </Project>
-</Workspace>
-");
+            var content = XElement.Parse("""
+                <Workspace>
+                    <Project Language="C#"  LanguageVersion="preview" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                record struct Goo
+                {
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """);
             await TestAsync(testHost, composition, content, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
@@ -109,16 +115,16 @@ await TestAsync(testHost, composition, content, async w =>
         [CombinatorialData]
         public async Task FindClassInFileScopedNamespace(TestHost testHost, Composition composition)
         {
-            var content = XElement.Parse(@"
-<Workspace>
-    <Project Language=""C#""  LanguageVersion=""preview"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-namespace FileScopedNS;
-class Goo { }
-        </Document>
-    </Project>
-</Workspace>
-");
+            var content = XElement.Parse("""
+                <Workspace>
+                    <Project Language="C#"  LanguageVersion="preview" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                namespace FileScopedNS;
+                class Goo { }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """);
             await TestAsync(testHost, composition, content, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
@@ -131,9 +137,11 @@ await TestAsync(testHost, composition, content, async w =>
         public async Task FindVerbatimClass(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class @static
+testHost, composition, """
+class @static
 {
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("static")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "static", "[|static|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -149,7 +157,8 @@ await TestAsync(
         public async Task FindNestedClass(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     class Bar
     {
@@ -157,7 +166,8 @@ internal class DogBed
         {
         }
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DogBed")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "DogBed", "[|DogBed|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -169,7 +179,8 @@ internal class DogBed
         public async Task FindMemberInANestedClass(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     class Bar 
     {
@@ -180,7 +191,8 @@ public void Method()
             }
         }
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Method")).Single();
                 VerifyNavigateToResultItem(item, "Method", "[|Method|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo.Bar.DogBed", "Test"));
@@ -192,11 +204,13 @@ public void Method()
         public async Task FindGenericClassWithConstraints(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"using System.Collections;
+testHost, composition, """
+using System.Collections;
 
 class Goo<T> where T : IEnumerable
 {
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]<T>", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -208,14 +222,16 @@ class Goo<T> where T : IEnumerable
         public async Task FindGenericMethodWithConstraints(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"using System;
+testHost, composition, """
+using System;
 
 class Goo<U>
 {
     public void Bar<T>(T item) where T : IComparable<T>
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Bar")).Single();
                 VerifyNavigateToResultItem(item, "Bar", "[|Bar|]<T>(T)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo<U>", "Test"));
@@ -227,7 +243,8 @@ public void Bar<T>(T item) where T : IComparable<T>
         public async Task FindPartialClass(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"public partial class Goo
+testHost, composition, """
+public partial class Goo
 {
     int a;
 }
@@ -235,7 +252,8 @@ await TestAsync(
 partial class Goo
 {
     int b;
-}", async w =>
+}
+""", async w =>
             {
                 var expecteditem1 = new NavigateToItem("Goo", NavigateToItemKind.Class, "csharp", null, null, s_emptyExactPatternMatch, null);
                 var expecteditems = new List<NavigateToItem> { expecteditem1, expecteditem1 };
@@ -251,9 +269,11 @@ partial class Goo
         public async Task FindTypesInMetadata(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"using System;
+testHost, composition, """
+using System;
 
-Class Program { FileStyleUriParser f; }", async w =>
+Class Program { FileStyleUriParser f; }
+""", async w =>
             {
                 var items = await _aggregator.GetItemsAsync("FileStyleUriParser");
                 Assert.Equal(0, items.Count());
@@ -265,12 +285,14 @@ await TestAsync(
         public async Task FindClassInNamespace(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"namespace Bar
+testHost, composition, """
+namespace Bar
 {
     class Goo
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]", PatternMatchKind.Exact, NavigateToItemKind.Class, Glyph.ClassInternal);
@@ -282,9 +304,11 @@ class Goo
         public async Task FindStruct(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"struct Bar
+testHost, composition, """
+struct Bar
 {
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("B")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Bar", "[|B|]ar", PatternMatchKind.Prefix, NavigateToItemKind.Structure, Glyph.StructureInternal);
@@ -296,12 +320,14 @@ await TestAsync(
         public async Task FindEnum(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"enum Colors
+testHost, composition, """
+enum Colors
 {
     Red,
     Green,
     Blue
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Colors")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "Colors", "[|Colors|]", PatternMatchKind.Exact, NavigateToItemKind.Enum, Glyph.EnumInternal);
@@ -313,12 +339,14 @@ await TestAsync(
         public async Task FindEnumMember(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"enum Colors
+testHost, composition, """
+enum Colors
 {
     Red,
     Green,
     Blue
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("R")).Single();
                 VerifyNavigateToResultItem(item, "Red", "[|R|]ed", PatternMatchKind.Prefix, NavigateToItemKind.EnumItem, Glyph.EnumMemberPublic);
@@ -330,10 +358,12 @@ await TestAsync(
         public async Task FindField1(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     int bar;
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("b")).Single();
                 VerifyNavigateToResultItem(item, "bar", "[|b|]ar", PatternMatchKind.Prefix, NavigateToItemKind.Field, Glyph.FieldPrivate, additionalInfo: string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -345,10 +375,12 @@ await TestAsync(
         public async Task FindField2(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     int bar;
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("ba")).Single();
                 VerifyNavigateToResultItem(item, "bar", "[|ba|]r", PatternMatchKind.Prefix, NavigateToItemKind.Field, Glyph.FieldPrivate, additionalInfo: string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -360,10 +392,12 @@ await TestAsync(
         public async Task FindField3(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     int bar;
-}", async w =>
+}
+""", async w =>
             {
                 Assert.Empty(await _aggregator.GetItemsAsync("ar"));
             });
@@ -374,10 +408,12 @@ await TestAsync(
         public async Task FindVerbatimField(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     int @string;
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("string")).Single();
                 VerifyNavigateToResultItem(item, "string", "[|string|]", PatternMatchKind.Exact, NavigateToItemKind.Field, Glyph.FieldPrivate, additionalInfo: string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -393,10 +429,12 @@ await TestAsync(
         public async Task FindPtrField1(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     int* bar;
-}", async w =>
+}
+""", async w =>
             {
                 Assert.Empty(await _aggregator.GetItemsAsync("ar"));
             });
@@ -407,10 +445,12 @@ await TestAsync(
         public async Task FindPtrField2(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     int* bar;
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("b")).Single();
                 VerifyNavigateToResultItem(item, "bar", "[|b|]ar", PatternMatchKind.Prefix, NavigateToItemKind.Field, Glyph.FieldPrivate);
@@ -422,10 +462,12 @@ await TestAsync(
         public async Task FindConstField(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     const int bar = 7;
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("ba")).Single();
                 VerifyNavigateToResultItem(item, "bar", "[|ba|]r", PatternMatchKind.Prefix, NavigateToItemKind.Constant, Glyph.ConstantPrivate);
@@ -461,10 +503,12 @@ await TestAsync(testHost, composition, program, async w =>
         public async Task FindAutoProperty(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     int Bar { get; set; }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("B")).Single();
                 VerifyNavigateToResultItem(item, "Bar", "[|B|]ar", PatternMatchKind.Prefix, NavigateToItemKind.Property, Glyph.PropertyPrivate, additionalInfo: string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -476,10 +520,12 @@ await TestAsync(
         public async Task FindMethod(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     void DoSomething();
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DS")).Single();
                 VerifyNavigateToResultItem(item, "DoSomething", "[|D|]o[|S|]omething()", PatternMatchKind.CamelCaseExact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -491,10 +537,12 @@ await TestAsync(
         public async Task FindVerbatimMethod(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     void @static();
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("static")).Single();
                 VerifyNavigateToResultItem(item, "static", "[|static|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -510,12 +558,14 @@ await TestAsync(
         public async Task FindParameterizedMethod(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     void DoSomething(int a, string b)
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DS")).Single();
                 VerifyNavigateToResultItem(item, "DoSomething", "[|D|]o[|S|]omething(int, string)", PatternMatchKind.CamelCaseExact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -527,12 +577,14 @@ void DoSomething(int a, string b)
         public async Task FindConstructor(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     public Goo()
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(t => t.Kind == NavigateToItemKind.Method);
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -544,12 +596,14 @@ public Goo()
         public async Task FindParameterizedConstructor(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     public Goo(int i)
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(t => t.Kind == NavigateToItemKind.Method);
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|](int)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -561,12 +615,14 @@ public Goo(int i)
         public async Task FindStaticConstructor(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     static Goo()
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Goo")).Single(t => t.Kind == NavigateToItemKind.Method && t.Name != ".ctor");
                 VerifyNavigateToResultItem(item, "Goo", "[|Goo|].static Goo()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -593,10 +649,12 @@ public async Task FindPartialMethods(TestHost testHost, Composition composition)
         public async Task FindPartialMethodDefinitionOnly(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"partial class Goo
+testHost, composition, """
+partial class Goo
 {
     partial void Bar();
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Bar")).Single();
                 VerifyNavigateToResultItem(item, "Bar", "[|Bar|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_1_2, "Goo", "test1.cs", "Test"));
@@ -608,12 +666,14 @@ await TestAsync(
         public async Task FindPartialMethodImplementationOnly(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"partial class Goo
+testHost, composition, """
+partial class Goo
 {
     partial void Bar()
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("Bar")).Single();
                 VerifyNavigateToResultItem(item, "Bar", "[|Bar|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate, string.Format(FeaturesResources.in_0_1_2, "Goo", "test1.cs", "Test"));
@@ -655,9 +715,11 @@ await TestAsync(testHost, composition, program, async w =>
         public async Task FindInterface(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"public interface IGoo
+testHost, composition, """
+public interface IGoo
 {
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("IG")).Single();
                 VerifyNavigateToResultItem(item, "IGoo", "[|IG|]oo", PatternMatchKind.Prefix, NavigateToItemKind.Interface, Glyph.InterfacePublic);
@@ -669,9 +731,11 @@ await TestAsync(
         public async Task FindTopLevelLocalFunction(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"void Goo()
+testHost, composition, """
+void Goo()
 {
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Goo")).Single();
     VerifyNavigateToResultItem(item, "Goo", "[|Goo|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate);
@@ -683,9 +747,11 @@ await TestAsync(
         public async Task FindTopLevelLocalFunction_WithParameters(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"void Goo(int i)
+testHost, composition, """
+void Goo(int i)
 {
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Goo")).Single();
     VerifyNavigateToResultItem(item, "Goo", "[|Goo|](int)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate);
@@ -697,9 +763,11 @@ await TestAsync(
         public async Task FindTopLevelLocalFunction_WithTypeArgumentsAndParameters(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"void Goo<T>(int i)
+testHost, composition, """
+void Goo<T>(int i)
 {
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Goo")).Single();
     VerifyNavigateToResultItem(item, "Goo", "[|Goo|]<T>(int)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate);
@@ -711,12 +779,14 @@ await TestAsync(
         public async Task FindNestedLocalFunctionTopLevelStatements(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"void Goo()
+testHost, composition, """
+void Goo()
 {
     void Bar()
     {
     }
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Bar")).Single();
     VerifyNavigateToResultItem(item, "Bar", "[|Bar|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate);
@@ -728,7 +798,7 @@ void Bar()
         public async Task FindLocalFunctionInMethod(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"
+testHost, composition, """
 class C
 {
     void M()
@@ -740,7 +810,8 @@ void Bar()
             }
         }
     }
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Goo")).Single();
     VerifyNavigateToResultItem(item, "Goo", "[|Goo|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate);
@@ -752,7 +823,7 @@ void Bar()
         public async Task FindNestedLocalFunctionInMethod(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"
+testHost, composition, """
 class C
 {
     void M()
@@ -764,7 +835,8 @@ void Bar()
             }
         }
     }
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Bar")).Single();
     VerifyNavigateToResultItem(item, "Bar", "[|Bar|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate);
@@ -776,10 +848,12 @@ void Bar()
         public async Task FindDelegateInNamespace(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"namespace Goo
+testHost, composition, """
+namespace Goo
 {
     delegate void DoStuff();
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("DoStuff")).Single(x => x.Kind != "Method");
                 VerifyNavigateToResultItem(item, "DoStuff", "[|DoStuff|]", PatternMatchKind.Exact, NavigateToItemKind.Delegate, Glyph.DelegateInternal);
@@ -791,12 +865,14 @@ await TestAsync(
         public async Task FindLambdaExpression(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"using System;
+testHost, composition, """
+using System;
 
 class Goo
 {
     Func<int, int> sqr = x => x * x;
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("sqr")).Single();
                 VerifyNavigateToResultItem(item, "sqr", "[|sqr|]", PatternMatchKind.Exact, NavigateToItemKind.Field, Glyph.FieldPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -808,10 +884,12 @@ class Goo
         public async Task FindArray(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     object[] itemArray;
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("itemArray")).Single();
                 VerifyNavigateToResultItem(item, "itemArray", "[|itemArray|]", PatternMatchKind.Exact, NavigateToItemKind.Field, Glyph.FieldPrivate, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -823,7 +901,8 @@ await TestAsync(
         public async Task FindClassAndMethodWithSameName(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
 }
 
@@ -832,7 +911,8 @@ class Test
     void Goo()
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var expectedItems = new List<NavigateToItem>
                 {
@@ -849,7 +929,8 @@ void Goo()
         public async Task FindMethodNestedInGenericTypes(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class A<T>
+testHost, composition, """
+class A<T>
 {
     class B
     {
@@ -860,7 +941,8 @@ void M()
             }
         }
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("M")).Single();
                 VerifyNavigateToResultItem(item, "M", "[|M|]()", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate, additionalInfo: string.Format(FeaturesResources.in_0_project_1, "A<T>.B.C<U>", "Test"));
@@ -872,7 +954,8 @@ void M()
         public async Task OrderingOfConstructorsAndTypes(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class C1
+testHost, composition, """
+class C1
 {
     C1(int i)
     {
@@ -888,7 +971,8 @@ class C2
     static C2()
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var expecteditems = new List<NavigateToItem>
                 {
@@ -909,12 +993,14 @@ static C2()
         public async Task NavigateToMethodWithNullableParameter(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class C
+testHost, composition, """
+class C
 {
     void M(object? o)
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("M")).Single();
                 VerifyNavigateToResultItem(item, "M", "[|M|](object?)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPrivate);
@@ -927,9 +1013,11 @@ public async Task StartStopSanity(TestHost testHost, Composition composition)
         {
             // Verify that multiple calls to start/stop and dispose don't blow up
             await TestAsync(
-testHost, composition, @"public class Goo
+testHost, composition, """
+public class Goo
 {
-}", async w =>
+}
+""", async w =>
             {
                 // Do one set of queries
                 Assert.Single((await _aggregator.GetItemsAsync("Goo")).Where(x => x.Kind != "Method"));
@@ -948,7 +1036,12 @@ await TestAsync(
         [CombinatorialData]
         public async Task DescriptionItems(TestHost testHost, Composition composition)
         {
-            await TestAsync(testHost, composition, "public\r\nclass\r\nGoo\r\n{ }", async w =>
+            await TestAsync(testHost, composition, """
+                public
+                class
+                Goo
+                { }
+                """, async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("G")).Single(x => x.Kind != "Method");
                 var itemDisplay = item.DisplayFactory.CreateItemDisplay(item);
@@ -1083,19 +1176,21 @@ await TestAsync(testHost, composition, source, async w =>
         public async Task TestIndexer1(TestHost testHost, Composition composition)
         {
             var source =
-@"class C
-{
-    public int this[int y] { get { } }
-}
+                """
+                class C
+                {
+                    public int this[int y] { get { } }
+                }
 
-class D
-{
-    void Goo()
-    {
-        var q = new C();
-        var b = q[4];
-    }
-}";
+                class D
+                {
+                    void Goo()
+                    {
+                        var q = new C();
+                        var b = q[4];
+                    }
+                }
+                """;
             await TestAsync(testHost, composition, source, async w =>
             {
                 var expecteditems = new List<NavigateToItem>
@@ -1257,30 +1352,30 @@ await TestAsync(testHost, composition, source, async w =>
         [WorkItem("https://github.com/dotnet/roslyn/issues/8009")]
         public async Task NavigateToGeneratedFiles()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            namespace N
-            {
-                public partial class C
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-        <Document FilePath=""File1.g.cs"">
-            namespace N
-            {
-                public partial class C
-                {
-                    public void VisibleMethod_Generated() { }
-                }
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            namespace N
+                            {
+                                public partial class C
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                        <Document FilePath="File1.g.cs">
+                            namespace N
+                            {
+                                public partial class C
+                                {
+                                    public void VisibleMethod_Generated() { }
+                                }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1302,12 +1397,14 @@ public void VisibleMethod_Generated() { }
         public async Task FindFuzzy1(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class C
+testHost, composition, """
+class C
 {
     public void ToError()
     {
     }
-}", async w =>
+}
+""", async w =>
             {
                 var item = (await _aggregator.GetItemsAsync("ToEror")).Single();
                 VerifyNavigateToResultItem(item, "ToError", "ToError()", PatternMatchKind.Fuzzy, NavigateToItemKind.Method, Glyph.MethodPublic);
@@ -1319,12 +1416,14 @@ public void ToError()
         public async Task Test__arglist(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class C
+testHost, composition, """
+class C
 {
     public void ToError(__arglist)
     {
     }
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("ToError")).Single();
     VerifyNavigateToResultItem(item, "ToError", "[|ToError|](__arglist)", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic);
@@ -1334,24 +1433,24 @@ public void ToError(__arglist)
         [Fact]
         public async Task DoNotIncludeTrivialPartialContainer()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            public partial class Outer
-            {
-                public void VisibleMethod() { }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"">
-            public partial class Outer
-            {
-                public partial class Inner { }
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            public partial class Outer
+                            {
+                                public void VisibleMethod() { }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs">
+                            public partial class Outer
+                            {
+                                public partial class Inner { }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1367,25 +1466,25 @@ public partial class Inner { }
         [Fact]
         public async Task DoNotIncludeTrivialPartialContainerWithMultipleNestedTypes()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            public partial class Outer
-            {
-                public void VisibleMethod() { }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"">
-            public partial class Outer
-            {
-                public partial class Inner1 { }
-                public partial class Inner2 { }
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            public partial class Outer
+                            {
+                                public void VisibleMethod() { }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs">
+                            public partial class Outer
+                            {
+                                public partial class Inner1 { }
+                                public partial class Inner2 { }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1401,24 +1500,24 @@ public partial class Inner2 { }
         [Fact]
         public async Task DoNotIncludeWhenAllAreTrivialPartialContainer()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            public partial class Outer
-            {
-                public partial class Inner1 { }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"">
-            public partial class Outer
-            {
-                public partial class Inner2 { }
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            public partial class Outer
+                            {
+                                public partial class Inner1 { }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs">
+                            public partial class Outer
+                            {
+                                public partial class Inner2 { }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1431,24 +1530,24 @@ public partial class Inner2 { }
         [Fact]
         public async Task DoIncludeNonTrivialPartialContainer()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            public partial class Outer
-            {
-                public void VisibleMethod() { }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"">
-            public partial class Outer
-            {
-                public void VisibleMethod2() { }
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            public partial class Outer
+                            {
+                                public void VisibleMethod() { }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs">
+                            public partial class Outer
+                            {
+                                public void VisibleMethod2() { }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1465,25 +1564,25 @@ public void VisibleMethod2() { }
         [Fact]
         public async Task DoIncludeNonTrivialPartialContainerWithNestedType()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            public partial class Outer
-            {
-                public void VisibleMethod() { }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"">
-            public partial class Outer
-            {
-                public void VisibleMethod2() { }
-                public class Inner { }
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            public partial class Outer
+                            {
+                                public void VisibleMethod() { }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs">
+                            public partial class Outer
+                            {
+                                public void VisibleMethod2() { }
+                                public class Inner { }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1500,17 +1599,17 @@ public class Inner { }
         [Fact]
         public async Task DoIncludePartialWithNoContents()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            public partial class Outer
-            {
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            public partial class Outer
+                            {
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1526,18 +1625,18 @@ public partial class Outer
         [Fact]
         public async Task DoIncludeNonPartialOnlyContainingNestedTypes()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            public class Outer
-            {
-                public class Inner {}
-            }
-        </Document>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            public class Outer
+                            {
+                                public class Inner {}
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1553,17 +1652,17 @@ public class Inner {}
         [Fact]
         public async Task DoIncludeSymbolsFromSourceGeneratedFiles()
         {
-            using var workspace = TestWorkspace.Create(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <DocumentFromSourceGenerator>
-            public class C
-            {
-            }
-        </DocumentFromSourceGenerator>
-    </Project>
-</Workspace>
-", composition: EditorTestCompositions.EditorFeatures);
+            using var workspace = TestWorkspace.Create("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <DocumentFromSourceGenerator>
+                            public class C
+                            {
+                            }
+                        </DocumentFromSourceGenerator>
+                    </Project>
+                </Workspace>
+                """, composition: EditorTestCompositions.EditorFeatures);
 
             _provider = CreateProvider(workspace);
             _aggregator = new NavigateToTestAggregator(_provider);
@@ -1583,14 +1682,16 @@ public async Task DoIncludeSymbolsFromMultipleSourceGeneratedFiles()
                 files: Array.Empty<string>(),
                 sourceGeneratedFiles: new[]
                 {
-                    @"
-public partial class C
-{
-}",
-                    @"
-public partial class C
-{
-}",
+                    """
+                    public partial class C
+                    {
+                    }
+                    """,
+                    """
+                    public partial class C
+                    {
+                    }
+                    """,
                 },
                 composition: EditorTestCompositions.EditorFeatures);
 
@@ -1611,14 +1712,16 @@ public partial class C
         public async Task FindMethodWithTuple(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"class Goo
+testHost, composition, """
+class Goo
 {
     public void Method(
         (int x, Dictionary<int,string> y) t1,
         (bool b, global::System.Int32 c) t2)
     {
     }
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Method")).Single();
     VerifyNavigateToResultItem(item, "Method", "[|Method|]((int x, Dictionary<int,string> y), (bool b, global::System.Int32 c))", PatternMatchKind.Exact, NavigateToItemKind.Method, Glyph.MethodPublic, string.Format(FeaturesResources.in_0_project_1, "Goo", "Test"));
@@ -1631,9 +1734,11 @@ public void Method(
         public async Task FindRecordMember1(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"record Goo(int Member)
+testHost, composition, """
+record Goo(int Member)
 {
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Member")).Single(x => x.Kind == NavigateToItemKind.Property);
     VerifyNavigateToResultItem(item, "Member", "[|Member|]", PatternMatchKind.Exact, NavigateToItemKind.Property, Glyph.PropertyPublic);
@@ -1646,10 +1751,12 @@ await TestAsync(
         public async Task FindRecordMember2(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"record Goo(int Member)
+testHost, composition, """
+record Goo(int Member)
 {
     public int Member { get; } = Member;
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Member")).Single(x => x.Kind == NavigateToItemKind.Property);
     VerifyNavigateToResultItem(item, "Member", "[|Member|]", PatternMatchKind.Exact, NavigateToItemKind.Property, Glyph.PropertyPublic);
@@ -1662,10 +1769,12 @@ await TestAsync(
         public async Task FindRecordMember3(TestHost testHost, Composition composition)
         {
             await TestAsync(
-testHost, composition, @"record Goo(int Member)
+testHost, composition, """
+record Goo(int Member)
 {
     public int Member = Member;
-}", async w =>
+}
+""", async w =>
 {
     var item = (await _aggregator.GetItemsAsync("Member")).Single(x => x.Kind == NavigateToItemKind.Field);
     VerifyNavigateToResultItem(item, "Member", "[|Member|]", PatternMatchKind.Exact, NavigateToItemKind.Field, Glyph.FieldPublic);
@@ -1681,30 +1790,30 @@ private static bool IsFromFile(NavigateToItem item, string fileName)
         [CombinatorialData]
         public async Task NavigateToPrioritizeResultInCurrentDocument1(TestHost testHost)
         {
-            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"">
-            namespace N
-            {
-                public class C
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"">
-            namespace N
-            {
-                public class D
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-    </Project>
-</Workspace>
-"), async workspace =>
+            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs">
+                            namespace N
+                            {
+                                public class C
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs">
+                            namespace N
+                            {
+                                public class D
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """), async workspace =>
             {
                 _provider = CreateProvider(workspace);
                 _aggregator = new NavigateToTestAggregator(_provider);
@@ -1727,30 +1836,30 @@ public void VisibleMethod() { }
         [CombinatorialData]
         public async Task NavigateToPrioritizeResultInCurrentDocument2(TestHost testHost)
         {
-            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"" Folders=""A\B\C"">
-            namespace N
-            {
-                public class C
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"" Folders=""A\B\C"">
-            namespace N
-            {
-                public class D
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-    </Project>
-</Workspace>
-"), async workspace =>
+            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs" Folders="A\B\C">
+                            namespace N
+                            {
+                                public class C
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs" Folders="A\B\C">
+                            namespace N
+                            {
+                                public class D
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """), async workspace =>
             {
                 _provider = CreateProvider(workspace);
                 _aggregator = new NavigateToTestAggregator(_provider);
@@ -1773,30 +1882,30 @@ public void VisibleMethod() { }
         [CombinatorialData]
         public async Task NavigateToPrioritizeResultInCurrentDocument3(TestHost testHost)
         {
-            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"" Folders=""A\B\C\D"">
-            namespace N
-            {
-                public class C
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"" Folders=""A\B\C"">
-            namespace N
-            {
-                public class D
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-    </Project>
-</Workspace>
-"), async workspace =>
+            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs" Folders="A\B\C\D">
+                            namespace N
+                            {
+                                public class C
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs" Folders="A\B\C">
+                            namespace N
+                            {
+                                public class D
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """), async workspace =>
             {
                 _provider = CreateProvider(workspace);
                 _aggregator = new NavigateToTestAggregator(_provider);
@@ -1819,30 +1928,30 @@ public void VisibleMethod() { }
         [CombinatorialData]
         public async Task NavigateToPrioritizeResultInCurrentDocument4(TestHost testHost)
         {
-            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"" Folders=""A\B\C"">
-            namespace N
-            {
-                public class C
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"" Folders=""A\B\C\D"">
-            namespace N
-            {
-                public class D
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-    </Project>
-</Workspace>
-"), async workspace =>
+            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs" Folders="A\B\C">
+                            namespace N
+                            {
+                                public class C
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs" Folders="A\B\C\D">
+                            namespace N
+                            {
+                                public class D
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """), async workspace =>
             {
                 _provider = CreateProvider(workspace);
                 _aggregator = new NavigateToTestAggregator(_provider);
@@ -1865,30 +1974,30 @@ public void VisibleMethod() { }
         [CombinatorialData]
         public async Task NavigateToPrioritizeResultInCurrentDocument5(TestHost testHost)
         {
-            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse(@"
-<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath=""File1.cs"" Folders=""A\B\C\D1"">
-            namespace N
-            {
-                public class C
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-        <Document FilePath=""File2.cs"" Folders=""A\B\C\D2"">
-            namespace N
-            {
-                public class D
-                {
-                    public void VisibleMethod() { }
-                }
-            }
-        </Document>
-    </Project>
-</Workspace>
-"), async workspace =>
+            await TestAsync(testHost, Composition.FirstActiveAndVisible, XElement.Parse("""
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath="File1.cs" Folders="A\B\C\D1">
+                            namespace N
+                            {
+                                public class C
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                        <Document FilePath="File2.cs" Folders="A\B\C\D2">
+                            namespace N
+                            {
+                                public class D
+                                {
+                                    public void VisibleMethod() { }
+                                }
+                            }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """), async workspace =>
             {
                 _provider = CreateProvider(workspace);
                 _aggregator = new NavigateToTestAggregator(_provider);
diff --git a/src/EditorFeatures/CSharpTest/PdbSourceDocument/ImplementationAssemblyLookupServiceTests.cs b/src/EditorFeatures/CSharpTest/PdbSourceDocument/ImplementationAssemblyLookupServiceTests.cs
index 52e8f4a35a791..3853bc437017c 100644
--- a/src/EditorFeatures/CSharpTest/PdbSourceDocument/ImplementationAssemblyLookupServiceTests.cs
+++ b/src/EditorFeatures/CSharpTest/PdbSourceDocument/ImplementationAssemblyLookupServiceTests.cs
@@ -24,12 +24,13 @@ public class ImplementationAssemblyLookupServiceTests : AbstractPdbSourceDocumen
         [Fact]
         public async Task Net6SdkLayout_InvalidXml()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -61,12 +62,13 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task Net6SdkLayout()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -100,12 +102,13 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task Net6SdkLayout_PacksInPath()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -141,15 +144,16 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task FollowTypeForwards()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
-";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -191,24 +195,25 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task FollowTypeForwards_Namespace()
         {
-            var source = @"
-namespace A
-{
-    namespace B
-    {
-        public class C
-        {
-            public class D
-            {
-                // A change
-                public event System.EventHandler [|E|] { add { } remove { } }
-            }
-        }
-    }
-}";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(A.B.C))]
-";
+            var source = """
+                namespace A
+                {
+                    namespace B
+                    {
+                        public class C
+                        {
+                            public class D
+                            {
+                                // A change
+                                public event System.EventHandler [|E|] { add { } remove { } }
+                            }
+                        }
+                    }
+                }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(A.B.C))]
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -251,24 +256,25 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task FollowTypeForwards_Generics()
         {
-            var source = @"
-namespace A
-{
-    namespace B
-    {
-        public class C<T>
-        {
-            public class D
-            {
-                // A change
-                public event System.EventHandler [|E|] { add { } remove { } }
-            }
-        }
-    }
-}";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(A.B.C<>))]
-";
+            var source = """
+                namespace A
+                {
+                    namespace B
+                    {
+                        public class C<T>
+                        {
+                            public class D
+                            {
+                                // A change
+                                public event System.EventHandler [|E|] { add { } remove { } }
+                            }
+                        }
+                    }
+                }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(A.B.C<>))]
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -311,18 +317,19 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task FollowTypeForwards_NestedType()
         {
-            var source = @"
-public class C
-{
-    public class D
-    {
-        // A change
-        public event System.EventHandler [|E|] { add { } remove { } }
-    }
-}";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
-";
+            var source = """
+                public class C
+                {
+                    public class D
+                    {
+                        // A change
+                        public event System.EventHandler [|E|] { add { } remove { } }
+                    }
+                }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -364,15 +371,16 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task FollowTypeForwards_Cache()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
-";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -421,22 +429,23 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task FollowTypeForwards_MultipleTypes_Cache()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}
-
-public class D { }
-public class E { }
-public class F { }";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(D))]
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(E))]
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(F))]
-";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+
+                public class D { }
+                public class E { }
+                public class F { }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(D))]
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(E))]
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(F))]
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -485,15 +494,16 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task FollowTypeForwards_MultipleHops_Cache()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
-";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
+                """;
 
             await RunTestAsync(async path =>
             {
diff --git a/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbFileLocatorServiceTests.cs b/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbFileLocatorServiceTests.cs
index 149cf3ddba1e4..a80681c87a0bf 100644
--- a/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbFileLocatorServiceTests.cs
+++ b/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbFileLocatorServiceTests.cs
@@ -18,11 +18,12 @@ public class PdbFileLocatorServiceTests : AbstractPdbSourceDocumentTests
         [Fact]
         public async Task ReturnsPdbPathFromDebugger()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -46,11 +47,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task DoesntReadNonPortablePdbs()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -76,11 +78,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task NoPdbFoundReturnsNull()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
diff --git a/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentLoaderServiceTests.cs b/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentLoaderServiceTests.cs
index 2f8e57c0a597b..ce681fd57d842 100644
--- a/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentLoaderServiceTests.cs
+++ b/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentLoaderServiceTests.cs
@@ -22,11 +22,12 @@ public class PdbSourceDocumentLoaderServiceTests : AbstractPdbSourceDocumentTest
         [Fact]
         public async Task ReturnsSourceFileFromSourceLink()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -56,11 +57,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task NoUrlFoundReturnsNull()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
diff --git a/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentTests.cs b/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentTests.cs
index ea5ac5d35666d..3995e2ce1b3c5 100644
--- a/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentTests.cs
+++ b/src/EditorFeatures/CSharpTest/PdbSourceDocument/PdbSourceDocumentTests.cs
@@ -24,19 +24,20 @@ public partial class PdbSourceDocumentTests : AbstractPdbSourceDocumentTests
         [CombinatorialData]
         public async Task PreprocessorSymbols1(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-#if SOME_DEFINED_CONSTANT
-    public void [|M|]()
-    {
-    }
-#else
-    public void M()
-    {
-    }
-#endif
-}";
+            var source = """
+                public class C
+                {
+                #if SOME_DEFINED_CONSTANT
+                    public void [|M|]()
+                    {
+                    }
+                #else
+                    public void M()
+                    {
+                    }
+                #endif
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.M"), preprocessorSymbols: new[] { "SOME_DEFINED_CONSTANT" });
         }
 
@@ -44,19 +45,20 @@ public void M()
         [CombinatorialData]
         public async Task PreprocessorSymbols2(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-#if SOME_DEFINED_CONSTANT
-    public void M()
-    {
-    }
-#else
-    public void [|M|]()
-    {
-    }
-#endif
-}";
+            var source = """
+                public class C
+                {
+                #if SOME_DEFINED_CONSTANT
+                    public void M()
+                    {
+                    }
+                #else
+                    public void [|M|]()
+                    {
+                    }
+                #endif
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.M"));
         }
 
@@ -64,14 +66,15 @@ public void M()
         [CombinatorialData]
         public async Task Method(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public void [|M|]()
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class C
+                {
+                    public void [|M|]()
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.M"));
         }
 
@@ -79,14 +82,15 @@ public class C
         [CombinatorialData]
         public async Task Constructor(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public [|C|]()
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class C
+                {
+                    public [|C|]()
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C..ctor"));
         }
 
@@ -94,14 +98,15 @@ public class C
         [CombinatorialData]
         public async Task Parameter(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public void M(int [|a|])
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class C
+                {
+                    public void M(int [|a|])
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember<IMethodSymbol>("C.M").Parameters.First());
         }
 
@@ -109,11 +114,12 @@ public void M(int [|a|])
         [CombinatorialData]
         public async Task Class_FromTypeDefinitionDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|C|]
-{
-    // this is a comment that wouldn't appear in decompiled source
-}";
+            var source = """
+                public class [|C|]
+                {
+                    // this is a comment that wouldn't appear in decompiled source
+                }
+                """;
 
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C"));
         }
@@ -122,11 +128,12 @@ public class [|C|]
         [CombinatorialData]
         public async Task Constructor_FromTypeDefinitionDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|C|]
-{
-    // this is a comment that wouldn't appear in decompiled source
-}";
+            var source = """
+                public class [|C|]
+                {
+                    // this is a comment that wouldn't appear in decompiled source
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C..ctor"));
         }
 
@@ -134,14 +141,15 @@ public class [|C|]
         [CombinatorialData]
         public async Task NestedClass_FromTypeDefinitionDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class Outer
-{
-    public class [|C|]
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class Outer
+                {
+                    public class [|C|]
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer.C"));
         }
 
@@ -149,14 +157,15 @@ public class [|C|]
         [CombinatorialData]
         public async Task NestedClassConstructor_FromTypeDefinitionDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class Outer
-{
-    public class [|C|]
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class Outer
+                {
+                    public class [|C|]
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer.C..ctor"));
         }
 
@@ -164,14 +173,15 @@ public class [|C|]
         [CombinatorialData]
         public async Task Class_FromTypeDefinitionDocumentOfNestedClass(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|Outer|]
-{
-    public class C
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class [|Outer|]
+                {
+                    public class C
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer"));
         }
 
@@ -179,14 +189,15 @@ public class C
         [CombinatorialData]
         public async Task Constructor_FromTypeDefinitionDocumentOfNestedClass(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|Outer|]
-{
-    public class C
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class [|Outer|]
+                {
+                    public class C
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer..ctor"));
 
         }
@@ -195,17 +206,18 @@ public class C
         [CombinatorialData]
         public async Task NestedClass_FromMethodDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class Outer
-{
-    public class [|C|]
-    {
-        public void M()
-        {
-            // this is a comment that wouldn't appear in decompiled source
-        }
-    }
-}";
+            var source = """
+                public class Outer
+                {
+                    public class [|C|]
+                    {
+                        public void M()
+                        {
+                            // this is a comment that wouldn't appear in decompiled source
+                        }
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer.C"));
         }
 
@@ -213,17 +225,18 @@ public void M()
         [CombinatorialData]
         public async Task NestedClassConstructor_FromMethodDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class Outer
-{
-    public class [|C|]
-    {
-        public void M()
-        {
-            // this is a comment that wouldn't appear in decompiled source
-        }
-    }
-}";
+            var source = """
+                public class Outer
+                {
+                    public class [|C|]
+                    {
+                        public void M()
+                        {
+                            // this is a comment that wouldn't appear in decompiled source
+                        }
+                    }
+                }
+                """;
 
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer.C..ctor"));
         }
@@ -232,17 +245,18 @@ public void M()
         [CombinatorialData]
         public async Task Class_FromMethodDocumentOfNestedClass(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|Outer|]
-{
-    public class C
-    {
-        public void M()
-        {
-            // this is a comment that wouldn't appear in decompiled source
-        }
-    }
-}";
+            var source = """
+                public class [|Outer|]
+                {
+                    public class C
+                    {
+                        public void M()
+                        {
+                            // this is a comment that wouldn't appear in decompiled source
+                        }
+                    }
+                }
+                """;
 
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer"));
         }
@@ -251,17 +265,18 @@ public void M()
         [CombinatorialData]
         public async Task Constructor_FromMethodDocumentOfNestedClass(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|Outer|]
-{
-    public class C
-    {
-        public void M()
-        {
-            // this is a comment that wouldn't appear in decompiled source
-        }
-    }
-}";
+            var source = """
+                public class [|Outer|]
+                {
+                    public class C
+                    {
+                        public void M()
+                        {
+                            // this is a comment that wouldn't appear in decompiled source
+                        }
+                    }
+                }
+                """;
 
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("Outer..ctor"));
         }
@@ -270,14 +285,15 @@ public void M()
         [CombinatorialData]
         public async Task Class_FromMethodDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|C|]
-{
-    public void M()
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class [|C|]
+                {
+                    public void M()
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C"));
         }
 
@@ -285,14 +301,15 @@ public void M()
         [CombinatorialData]
         public async Task Constructor_FromMethodDocument(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class [|C|]
-{
-    public void M()
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+            var source = """
+                public class [|C|]
+                {
+                    public void M()
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C..ctor"));
         }
 
@@ -300,11 +317,12 @@ public void M()
         [CombinatorialData]
         public async Task Field(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public int [|f|];
-}";
+            var source = """
+                public class C
+                {
+                    public int [|f|];
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.f"));
         }
 
@@ -312,11 +330,12 @@ public class C
         [CombinatorialData]
         public async Task Property(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public int [|P|] { get; set; }
-}";
+            var source = """
+                public class C
+                {
+                    public int [|P|] { get; set; }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.P"));
         }
 
@@ -324,11 +343,12 @@ public class C
         [CombinatorialData]
         public async Task Property_WithBody(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public int [|P|] { get { return 1; } }
-}";
+            var source = """
+                public class C
+                {
+                    public int [|P|] { get { return 1; } }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.P"));
         }
 
@@ -336,11 +356,12 @@ public class C
         [CombinatorialData]
         public async Task EventField(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|];
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|];
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.E"));
         }
 
@@ -348,16 +369,17 @@ public class C
         [CombinatorialData]
         public async Task EventField_WithMethod(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|];
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|];
 
-    public void M()
-    {
-        // this is a comment that wouldn't appear in decompiled source
-    }
-}";
+                    public void M()
+                    {
+                        // this is a comment that wouldn't appear in decompiled source
+                    }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.E"));
         }
 
@@ -365,22 +387,24 @@ public void M()
         [CombinatorialData]
         public async Task Event(Location pdbLocation, Location sourceLocation)
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
             await TestAsync(pdbLocation, sourceLocation, source, c => c.GetMember("C.E"));
         }
 
         [Fact]
         public async Task ReferenceAssembly_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
             // A pdb won't be emitted when building a reference assembly so the first two parameters don't actually matter
             await TestAsync(Location.OnDisk, Location.OnDisk, source, c => c.GetMember("C.E"), buildReferenceAssembly: true, expectNullResult: true);
         }
@@ -388,12 +412,13 @@ public event System.EventHandler [|E|] { add { } remove { } }
         [Fact]
         public async Task NugetPackageLayout()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -417,12 +442,13 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task Net6SdkLayout()
         {
-            var source = @"
-public class C
-{
-    // A change
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -452,14 +478,14 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task Net6SdkLayout_WithOtherReferences()
         {
-            var source = @"
-public class C
-{
-    public void [|M|](string d)
-    {
-    }
-}
-";
+            var source = """
+                public class C
+                {
+                    public void [|M|](string d)
+                    {
+                    }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -496,17 +522,17 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task Net6SdkLayout_TypeForward()
         {
-            var source = @"
-public class [|C|]
-{
-    public void M(string d)
-    {
-    }
-}
-";
-            var typeForwardSource = @"
-[assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
-";
+            var source = """
+                public class [|C|]
+                {
+                    public void M(string d)
+                    {
+                    }
+                }
+                """;
+            var typeForwardSource = """
+                [assembly: System.Runtime.CompilerServices.TypeForwardedTo(typeof(C))]
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -558,11 +584,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task NoPdb_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -580,11 +607,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task NoDll_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -602,11 +630,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task NoSource_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
             await RunTestAsync(async path =>
             {
                 MarkupTestFile.GetSpan(source, out var metadataSource, out var expectedSpan);
@@ -623,11 +652,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task WindowsPdb_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
             await RunTestAsync(async path =>
             {
                 MarkupTestFile.GetSpan(source, out var metadataSource, out var expectedSpan);
@@ -642,11 +672,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task EmptyPdb_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -664,11 +695,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task CorruptPdb_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -688,17 +720,19 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task OldPdb_NullResult()
         {
-            var source1 = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
-            var source2 = @"
-public class C
-{
-    // A change
-    public event System.EventHandler E { add { } remove { } }
-}";
+            var source1 = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
+            var source2 = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler E { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -725,17 +759,19 @@ await RunTestAsync(async path =>
         [CombinatorialData]
         public async Task SourceFileChecksumIncorrect_NullResult(Location pdbLocation)
         {
-            var source1 = @"
-public class C
-{
-    public event System.EventHandler [|E|] { add { } remove { } }
-}";
-            var source2 = @"
-public class C
-{
-    // A change
-    public event System.EventHandler E { add { } remove { } }
-}";
+            var source1 = """
+                public class C
+                {
+                    public event System.EventHandler [|E|] { add { } remove { } }
+                }
+                """;
+            var source2 = """
+                public class C
+                {
+                    // A change
+                    public event System.EventHandler E { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -766,11 +802,12 @@ await RunTestAsync(async path =>
         [InlineData(Location.OnDisk, "utf-8")]
         public async Task EncodedEmbeddedSource(Location pdbLocation, string encodingWebName)
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler E { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler E { add { } remove { } }
+                }
+                """;
 
             var encoding = Encoding.GetEncoding(encodingWebName);
 
@@ -794,12 +831,13 @@ await RunTestAsync(async path =>
         [CombinatorialData]
         public async Task EncodedEmbeddedSource_SJIS(Location pdbLocation)
         {
-            var source = @"
-public class C
-{
-    // ワ
-    public event System.EventHandler E { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    // ワ
+                    public event System.EventHandler E { add { } remove { } }
+                }
+                """;
 
             var encoding = Encoding.GetEncoding("SJIS");
 
@@ -823,12 +861,13 @@ await RunTestAsync(async path =>
         [CombinatorialData]
         public async Task EncodedEmbeddedSource_SJIS_FallbackEncoding(Location pdbLocation)
         {
-            var source = @"
-public class C
-{
-    // ワ
-    public event System.EventHandler E { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    // ワ
+                    public event System.EventHandler E { add { } remove { } }
+                }
+                """;
 
             var encoding = Encoding.GetEncoding("SJIS");
 
@@ -851,11 +890,12 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task OptionTurnedOff_NullResult()
         {
-            var source = @"
-public class C
-{
-    public event System.EventHandler E { add { } remove { } }
-}";
+            var source = """
+                public class C
+                {
+                    public event System.EventHandler E { add { } remove { } }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
@@ -886,26 +926,26 @@ await RunTestAsync(async path =>
         [Fact]
         public async Task MethodInPartialType_NavigateToCorrectFile()
         {
-            var source1 = @"
-public partial class C
-{
-    public void M1()
-    {
-    }
-}
-";
-            var source2 = @"
-using System.Threading.Tasks;
+            var source1 = """
+                public partial class C
+                {
+                    public void M1()
+                    {
+                    }
+                }
+                """;
+            var source2 = """
+                using System.Threading.Tasks;
 
-public partial class C
-{
-    public static async Task [|M2|]() => await M3();
+                public partial class C
+                {
+                    public static async Task [|M2|]() => await M3();
 
-    private static async Task M3()
-    {
-    }
-}
-";
+                    private static async Task M3()
+                    {
+                    }
+                }
+                """;
 
             await RunTestAsync(async path =>
             {
diff --git a/src/EditorFeatures/CSharpTest/QuickInfo/DiagnosticAnalyzerQuickInfoSourceTests.cs b/src/EditorFeatures/CSharpTest/QuickInfo/DiagnosticAnalyzerQuickInfoSourceTests.cs
index 14450779523bd..53a3b5dfd857a 100644
--- a/src/EditorFeatures/CSharpTest/QuickInfo/DiagnosticAnalyzerQuickInfoSourceTests.cs
+++ b/src/EditorFeatures/CSharpTest/QuickInfo/DiagnosticAnalyzerQuickInfoSourceTests.cs
@@ -34,11 +34,11 @@ public class DiagnosticAnalyzerQuickInfoSourceTests
         public async Task ErrorTitleIsShownOnDisablePragma()
         {
             await TestInMethodAsync(
-@"
-#pragma warning disable CS0219$$
-            var i = 0;
-#pragma warning restore CS0219
-", GetFormattedErrorTitle(ErrorCode.WRN_UnreferencedVarAssg));
+                """
+                #pragma warning disable CS0219$$
+                            var i = 0;
+                #pragma warning restore CS0219
+                """, GetFormattedErrorTitle(ErrorCode.WRN_UnreferencedVarAssg));
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/46604")]
@@ -46,11 +46,11 @@ await TestInMethodAsync(
         public async Task ErrorTitleIsShownOnRestorePragma()
         {
             await TestInMethodAsync(
-@"
-#pragma warning disable CS0219
-            var i = 0;
-#pragma warning restore CS0219$$
-", GetFormattedErrorTitle(ErrorCode.WRN_UnreferencedVarAssg));
+                """
+                #pragma warning disable CS0219
+                            var i = 0;
+                #pragma warning restore CS0219$$
+                """, GetFormattedErrorTitle(ErrorCode.WRN_UnreferencedVarAssg));
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/46604")]
@@ -58,9 +58,9 @@ await TestInMethodAsync(
         public async Task DisabledWarningNotExistingInCodeIsDisplayedByTitleWithoutCodeDetails()
         {
             await TestInMethodAsync(
-@"
-#pragma warning disable CS0219$$
-", GetFormattedErrorTitle(ErrorCode.WRN_UnreferencedVarAssg));
+                """
+                #pragma warning disable CS0219$$
+                """, GetFormattedErrorTitle(ErrorCode.WRN_UnreferencedVarAssg));
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/49102")]
@@ -123,17 +123,17 @@ await TestInMethodAsync(
         public async Task ErrorTitleIsShwonInSupressMessageAttribute()
         {
             await TestAsync(
-@"
-using System.Diagnostics.CodeAnalysis;
-namespace T
-{
-    [SuppressMessage(""CodeQuality"", ""IDE0051$$"")]
-    public class C
-    {
-        private int _i;
-    }
-}
-", GetFormattedIDEAnalyzerTitle(51, nameof(AnalyzersResources.Remove_unused_private_members)), ImmutableArray<TextSpan>.Empty);
+                """
+                using System.Diagnostics.CodeAnalysis;
+                namespace T
+                {
+                    [SuppressMessage("CodeQuality", "IDE0051$$")]
+                    public class C
+                    {
+                        private int _i;
+                    }
+                }
+                """, GetFormattedIDEAnalyzerTitle(51, nameof(AnalyzersResources.Remove_unused_private_members)), ImmutableArray<TextSpan>.Empty);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/46604")]
@@ -153,7 +153,9 @@ public class C
         [InlineData(@"[SuppressMessage(""CodeQuality"", """" + (DiagnosticIds.IDE0051 +$$ "": Remove unused private member""))]", true)]
         [InlineData(@"[SuppressMessage(category: ""CodeQuality"", checkId$$: DiagnosticIds.IDE0051 + "": Remove unused private member"")]", true)]
         // False negative: Aliased attribute is not supported
-        [InlineData(@"[SM(""CodeQuality"", ""IDE0051$$""", false)]
+        [InlineData("""
+            [SM("CodeQuality", "IDE0051$$"
+            """, false)]
         public async Task QuickInfoSuppressMessageAttributeUseCases(string suppressMessageAttribute, bool shouldShowQuickInfo)
         {
             var description = shouldShowQuickInfo
@@ -243,12 +245,16 @@ private static string GetFormattedIDEAnalyzerTitle(int ideDiagnosticId, string n
 
         protected static Task TestInClassAsync(string code, string expectedDescription, params TextSpan[] relatedSpans)
             => TestAsync(
-@"class C
-{" + code + "}", expectedDescription, relatedSpans.ToImmutableArray());
+                """
+                class C
+                {
+                """ + code + "}", expectedDescription, relatedSpans.ToImmutableArray());
 
         protected static Task TestInMethodAsync(string code, string expectedDescription, params TextSpan[] relatedSpans)
             => TestInClassAsync(
-@"void M()
-{" + code + "}", expectedDescription, relatedSpans);
+                """
+                void M()
+                {
+                """ + code + "}", expectedDescription, relatedSpans);
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/RawStringLiteral/RawStringLiteralCommandHandlerTests.cs b/src/EditorFeatures/CSharpTest/RawStringLiteral/RawStringLiteralCommandHandlerTests.cs
index 76f7edc4f690e..a024b59b1ff53 100644
--- a/src/EditorFeatures/CSharpTest/RawStringLiteral/RawStringLiteralCommandHandlerTests.cs
+++ b/src/EditorFeatures/CSharpTest/RawStringLiteral/RawStringLiteralCommandHandlerTests.cs
@@ -88,13 +88,17 @@ public void SendReturn(bool handled)
         public void TestReturnInSixQuotes()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"""$$""""""");
+                """"
+                var v = """$$"""
+                """");
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = """"""
-$${|VirtualSpaces-4:|}
-    """"""");
+                """"
+                var v = """
+                $${|VirtualSpaces-4:|}
+                    """
+                """");
         }
 
         [WpfFact]
@@ -105,61 +109,79 @@ public void TestReturnInSixQuotesWithSemicolonAfter()
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = """"""
-$${|VirtualSpaces-4:|}
-    """""";");
+                """"
+                var v = """
+                $${|VirtualSpaces-4:|}
+                    """;
+                """");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotesNotAtMiddle()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"""""$$""""");
+                """""
+                var v = """"$$""
+                """"");
 
             testState.SendReturn(handled: false);
             testState.AssertCodeIs(
-@"var v = """"""""$$""""");
+                """""
+                var v = """"$$""
+                """"");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotes_Interpolated()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = $""""""$$""""""");
+                """"
+                var v = $"""$$"""
+                """");
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = $""""""
-$${|VirtualSpaces-4:|}
-    """"""");
+                """"
+                var v = $"""
+                $${|VirtualSpaces-4:|}
+                    """
+                """");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotesMoreQuotesLaterOn()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"""$$"""""";
-Console.WriteLine(""Goo"");");
+                """"
+                var v = """$$""";
+                Console.WriteLine("Goo");
+                """");
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = """"""
-$${|VirtualSpaces-4:|}
-    """""";
-Console.WriteLine(""Goo"");");
+                """"
+                var v = """
+                $${|VirtualSpaces-4:|}
+                    """;
+                Console.WriteLine("Goo");
+                """");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotesAsArgument1()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = WriteLine(""""""$$""""""");
+                """"
+                var v = WriteLine("""$$"""
+                """");
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = WriteLine(""""""
-$${|VirtualSpaces-4:|}
-    """"""");
+                """"
+                var v = WriteLine("""
+                $${|VirtualSpaces-4:|}
+                    """
+                """");
         }
 
         [WpfFact]
@@ -170,9 +192,11 @@ public void TestReturnInSixQuotesAsArgument2()
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = WriteLine(""""""
-$${|VirtualSpaces-4:|}
-    """""")");
+                """"
+                var v = WriteLine("""
+                $${|VirtualSpaces-4:|}
+                    """)
+                """");
         }
 
         [WpfFact]
@@ -183,54 +207,68 @@ public void TestReturnInSixQuotesAsArgument3()
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = WriteLine(""""""
-$${|VirtualSpaces-4:|}
-    """""");");
+                """"
+                var v = WriteLine("""
+                $${|VirtualSpaces-4:|}
+                    """);
+                """");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotesAsArgument4()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = WriteLine(
-    """"""$$""""""");
+                """"
+                var v = WriteLine(
+                    """$$"""
+                """");
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = WriteLine(
-    """"""
-$${|VirtualSpaces-4:|}
-    """"""");
+                """"
+                var v = WriteLine(
+                    """
+                $${|VirtualSpaces-4:|}
+                    """
+                """");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotesAsArgument5()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = WriteLine(
-    """"""$$"""""")");
+                """"
+                var v = WriteLine(
+                    """$$""")
+                """");
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = WriteLine(
-    """"""
-$${|VirtualSpaces-4:|}
-    """""")");
+                """"
+                var v = WriteLine(
+                    """
+                $${|VirtualSpaces-4:|}
+                    """)
+                """");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotesAsArgument6()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = WriteLine(
-    """"""$$"""""");");
+                """"
+                var v = WriteLine(
+                    """$$""");
+                """");
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = WriteLine(
-    """"""
-$${|VirtualSpaces-4:|}
-    """""");");
+                """"
+                var v = WriteLine(
+                    """
+                $${|VirtualSpaces-4:|}
+                    """);
+                """");
         }
 
         [WpfFact]
@@ -241,20 +279,26 @@ public void TestReturnInSixQuotesWithSemicolonAfter_Interpolated()
 
             testState.SendReturn(handled: true);
             testState.AssertCodeIs(
-@"var v = $""""""
-$${|VirtualSpaces-4:|}
-    """""";");
+                """"
+                var v = $"""
+                $${|VirtualSpaces-4:|}
+                    """;
+                """");
         }
 
         [WpfFact]
         public void TestReturnInSixQuotesNotAtMiddle_Interpolated()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = $""""""""$$""""");
+                """""
+                var v = $""""$$""
+                """"");
 
             testState.SendReturn(handled: false);
             testState.AssertCodeIs(
-@"var v = $""""""""$$""""");
+                """""
+                var v = $""""$$""
+                """"");
         }
 
         [WpfFact]
@@ -287,7 +331,9 @@ public void TestGenerateAtEndOfFile()
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = """"""$$""""""");
+                """"
+                var v = """$$"""
+                """");
         }
 
         [WpfFact]
@@ -309,7 +355,9 @@ public void TestGenerateWithInterpolatedString()
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = $""""""$$""""""");
+                """"
+                var v = $"""$$"""
+                """");
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/66538")]
@@ -390,55 +438,75 @@ public void TestNoGenerateWithVerbatimInterpolatedString2()
         public void TestDoNotGrowEmptyInsideSimpleString()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = ""$$""");
+                """
+                var v = "$$"
+                """);
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = """"$$""");
+                """
+                var v = ""$$"
+                """);
         }
 
         [WpfFact]
         public void TestDoNotGrowEmptyInsideFourQuotes()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"$$""""");
+                """
+                var v = ""$$""
+                """);
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = """"""$$""""");
+                """"
+                var v = """$$""
+                """");
         }
 
         [WpfFact]
         public void TestDoGrowEmptyInsideSixQuotesInMiddle()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"""$$""""""");
+                """"
+                var v = """$$"""
+                """");
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = """"""""$$""""""""");
+                """""
+                var v = """"$$""""
+                """"");
         }
 
         [WpfFact]
         public void TestDoGrowEmptyInsideSixQuotesInInterpolatedRaw()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = $""""""$$""""""");
+                """"
+                var v = $"""$$"""
+                """");
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = $""""""""$$""""""""");
+                """""
+                var v = $""""$$""""
+                """"");
         }
 
         [WpfFact]
         public void TestDoNotGrowEmptyInsideSixQuotesWhenNotInMiddle1()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = $""""$$""""""""");
+                """""
+                var v = $""$$""""
+                """"");
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = $""""""$$""""""""");
+                """""
+                var v = $"""$$""""
+                """"");
         }
 
         #endregion
@@ -449,41 +517,53 @@ public void TestDoNotGrowEmptyInsideSixQuotesWhenNotInMiddle1()
         public void TestGrowDelimetersWhenEndExists_SingleLine()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"""$$ """"""");
+                """"
+                var v = """$$ """
+                """");
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = """"""""$$ """"""""");
+                """""
+                var v = """"$$ """"
+                """"");
         }
 
         [WpfFact]
         public void TestGrowDelimetersWhenEndExists_MultiLine()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"""$$
+                """"
+                var v = """$$
 
-    """"""");
+                    """
+                """");
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = """"""""$$
+                """""
+                var v = """"$$
 
-    """"""""");
+                    """"
+                """"");
         }
 
         [WpfFact]
         public void TestGrowDelimetersWhenEndExists_Interpolated()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = $""""""$$
+                """"
+                var v = $"""$$
 
-    """"""");
+                    """
+                """");
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = $""""""""$$
+                """""
+                var v = $""""$$
 
-    """"""""");
+                    """"
+                """"");
         }
 
         [WpfFact]
@@ -501,15 +581,19 @@ public void TestDoNotGrowDelimetersWhenEndNotThere()
         public void TestDoNotGrowDelimetersWhenEndTooShort()
         {
             using var testState = RawStringLiteralTestState.CreateTestState(
-@"var v = """"""$$
+                """"
+                var v = """$$
 
-    """"");
+                    ""
+                """");
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"var v = """"""""$$
+                """""
+                var v = """"$$
 
-    """"");
+                    ""
+                """"");
         }
 
         #endregion
@@ -522,7 +606,9 @@ public void TestTypeQuoteEmptyFile()
 
             testState.SendTypeChar('"');
             testState.AssertCodeIs(
-@"""$$");
+                """
+                "$$
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/RefactoringHelpers/RefactoringHelpersTests.cs b/src/EditorFeatures/CSharpTest/RefactoringHelpers/RefactoringHelpersTests.cs
index 2e66af57d3627..043d47eedf811 100644
--- a/src/EditorFeatures/CSharpTest/RefactoringHelpers/RefactoringHelpersTests.cs
+++ b/src/EditorFeatures/CSharpTest/RefactoringHelpers/RefactoringHelpersTests.cs
@@ -17,361 +17,381 @@ public partial class RefactoringHelpersTests : RefactoringHelpersTestBase<CSharp
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestInTokenDirectlyUnderNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:C Local[||]Function(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:C Local[||]Function(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestBeforeTokenDirectlyUnderNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:C [||]LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:C [||]LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestAfterTokenDirectlyUnderNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:C [||]LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:C [||]LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingInTokenUnderDifferentNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        C LocalFunction(C c)
-        {
-            [||]return null;
-        }
-        
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        C LocalFunction(C c)
+                        {
+                            [||]return null;
+                        }
+
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestClimbRightEdge()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:C LocalFunction(C c)
-        {
-            return null;
-        }[||]|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:C LocalFunction(C c)
+                        {
+                            return null;
+                        }[||]|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestClimbLeftEdge()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:[||]C LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:[||]C LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestClimbLeftEdgeComments()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        /// <summary>
-        /// Comment1
-        /// </summary>
-        {|result:[||]C LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        /// <summary>
+                        /// Comment1
+                        /// </summary>
+                        {|result:[||]C LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingInAnotherChildNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        C LocalFunction(C c)
-        {
-            [||]return null;
-        }
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        C LocalFunction(C c)
+                        {
+                            [||]return null;
+                        }
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingInTooFarBeforeInWhitespace()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        [||]
-
-        C LocalFunction(C c)
-        {
-            return null;
-        }
-        
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        [||]
+
+                        C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingInWhiteSpaceOnLineWithDifferentStatement()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        
-        var a = null; [||]
-        C LocalFunction(C c)
-        {
-            return null;
-        }
-        
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+
+                        var a = null; [||]
+                        C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestNotBeforePrecedingComment()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        [||]//Test comment
-        C LocalFunction(C c)
-        {
-            return null;
-        }
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        [||]//Test comment
+                        C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestBeforeInWhitespace1_OnSameLine()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-[||]    {|result:C LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                [||]    {|result:C LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestBeforeInWhitespace1_OnPreviousLine()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        [||]
-        {|result:C LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        [||]
+                        {|result:C LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestBeforeInWhitespace1_NotOnMultipleLinesPrior()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        [||]
-
-        C LocalFunction(C c)
-        {
-            return null;
-        }
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        [||]
+
+                        C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestBeforeInWhitespace2()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-            var a = null;
-[||]        {|result:C LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                            var a = null;
+                [||]        {|result:C LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingInNextTokensLeadingTrivia()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-
-        C LocalFunction(C c)
-        {
-            return null;
-        }
-        [||]
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+
+                        C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                        [||]
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestInEmptySyntaxNode_AllowEmptyNodesTrue1()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N(0, [||]{|result:|}); 
-    }
-
-    int N(int a, int b, int c)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N(0, [||]{|result:|}); 
+                    }
+
+                    int N(int a, int b, int c)
+                    {
+                    }
+                }
+                """;
             await TestAsync<ArgumentSyntax>(testText, allowEmptyNodes: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestInEmptySyntaxNode_AllowEmptyNodesTrue2()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N(0, N(0, [||]{|result:|}, 0)); 
-    }
-
-    int N(int a, int b, int c)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N(0, N(0, [||]{|result:|}, 0)); 
+                    }
+
+                    int N(int a, int b, int c)
+                    {
+                    }
+                }
+                """;
             await TestAsync<ArgumentSyntax>(testText, allowEmptyNodes: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestInEmptySyntaxNode_AllowEmptyNodesFalse1()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N(0, [||], 0)); 
-    }
-
-    int N(int a, int b, int c)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N(0, [||], 0)); 
+                    }
+
+                    int N(int a, int b, int c)
+                    {
+                    }
+                }
+                """;
             await TestMissingAsync<ArgumentSyntax>(testText, allowEmptyNodes: false);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestInEmptySyntaxNode_AllowEmptyNodesFalse2()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N(0, {|result:N(0, [||], 0)|}); 
-    }
-
-    int N(int a, int b, int c)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N(0, {|result:N(0, [||], 0)|}); 
+                    }
+
+                    int N(int a, int b, int c)
+                    {
+                    }
+                }
+                """;
             await TestAsync<ArgumentSyntax>(testText, allowEmptyNodes: false);
         }
 
@@ -381,214 +401,226 @@ int N(int a, int b, int c)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestSelectedTokenDirectlyUnderNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:C [|LocalFunction|](C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:C [|LocalFunction|](C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestPartiallySelectedTokenDirectlyUnderNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:C Lo[|calFunct|]ion(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:C Lo[|calFunct|]ion(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestSelectedMultipleTokensUnderNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:[|C LocalFunction(C c)|]
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:[|C LocalFunction(C c)|]
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingSelectedMultipleTokensWithLowerCommonAncestor()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        C LocalFunction(C c)
-        [|{
-            return null;
-        }|]
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        C LocalFunction(C c)
+                        [|{
+                            return null;
+                        }|]
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingSelectedLowerNode()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        [|C|] LocalFunction(C c)
-        {
-            return null;
-        }
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        [|C|] LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingSelectedWhitespace()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        C[| |]LocalFunction(C c)
-        {
-            return null;
-        }
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        C[| |]LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingSelectedWhitespace2()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-       [| |]C LocalFunction(C c)
-        {
-            return null;
-        }
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                       [| |]C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestCompleteSelection()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        {|result:[|C LocalFunction(C c)
-        {
-            return null;
-        }|]|}
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        {|result:[|C LocalFunction(C c)
+                        {
+                            return null;
+                        }|]|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestOverSelection()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        [|
-        
-        {|result:C LocalFunction(C c)
-        {
-            return null;
-        }|}
-        
-        |]var a = new object();
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        [|
+
+                        {|result:C LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+
+                        |]var a = new object();
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestOverSelectionComments()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        
-        // Co[|mment1
-        {|result:C LocalFunction(C c)
-        {
-            return null;
-        }|}|]
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+
+                        // Co[|mment1
+                        {|result:C LocalFunction(C c)
+                        {
+                            return null;
+                        }|}|]
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingOverSelection()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        [|
-        C LocalFunction(C c)
-        {
-            return null;
-        }
-        v|]ar a = new object();
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        [|
+                        C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                        v|]ar a = new object();
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingSelectionBefore()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        
- [|       |]C LocalFunction(C c)
-        {
-            return null;
-        }
-        var a = new object();
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+
+                 [|       |]C LocalFunction(C c)
+                        {
+                            return null;
+                        }
+                        var a = new object();
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
 
@@ -598,67 +630,72 @@ void M()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/38708")]
         public async Task TestUnderselectionOnSemicolon()
         {
-            var testText = @"
-class Program
-{
-    static void Main()
-    {
-        {|result:Main()|}[|;|]
-    }
-}";
+            var testText = """
+                class Program
+                {
+                    static void Main()
+                    {
+                        {|result:Main()|}[|;|]
+                    }
+                }
+                """;
             await TestNotUnderselectedAsync<ExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/38708")]
         public async Task TestUnderselectionBug1()
         {
-            var testText = @"
-class Program
-{
-    public static void Method()
-    {
-        //[|>
-        var str = {|result:"" <|] aaa""|};
-    }
-}";
+            var testText = """
+                class Program
+                {
+                    public static void Method()
+                    {
+                        //[|>
+                        var str = {|result:" <|] aaa"|};
+                    }
+                }
+                """;
             await TestNotUnderselectedAsync<ExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/38708")]
         public async Task TestUnderselectionBug2()
         {
-            var testText = @"
-class C {
-    public void M()
-    {
-        Console.WriteLine(""Hello world"");[|
-        {|result:Console.WriteLine(new |]C())|};
-        }
-    }";
+            var testText = """
+                class C {
+                    public void M()
+                    {
+                        Console.WriteLine("Hello world");[|
+                        {|result:Console.WriteLine(new |]C())|};
+                        }
+                    }
+                """;
             await TestNotUnderselectedAsync<ExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/38708")]
         public async Task TestUnderselection()
         {
-            var testText = @"
-class C {
-    public void M()
-    {
-        bool a = {|result:[|true || false || true|]|};
-    }";
+            var testText = """
+                class C {
+                    public void M()
+                    {
+                        bool a = {|result:[|true || false || true|]|};
+                    }
+                """;
             await TestNotUnderselectedAsync<BinaryExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/38708")]
         public async Task TestUnderselection2()
         {
-            var testText = @"
-class C {
-    public void M()
-    {
-        bool a = true || [|false || true|] || true;
-    }";
+            var testText = """
+                class C {
+                    public void M()
+                    {
+                        bool a = true || [|false || true|] || true;
+                    }
+                """;
             await TestUnderselectedAsync<BinaryExpressionSyntax>(testText);
         }
         #endregion
@@ -667,267 +704,283 @@ public void M()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37584")]
         public async Task TestMissingEmptyMember()
         {
-            var testText = @"
-using System;
-public class Class1
-{
-    [][||]
-}";
+            var testText = """
+                using System;
+                public class Class1
+                {
+                    [][||]
+                }
+                """;
             await TestMissingAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/38502")]
         public async Task TestIncompleteAttribute()
         {
-            var testText = @"
-using System;
-public class Class1
-{
-    {|result:void foo([[||]bar) {}|}
-}";
+            var testText = """
+                using System;
+                public class Class1
+                {
+                    {|result:void foo([[||]bar) {}|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/38502")]
         public async Task TestIncompleteAttribute2()
         {
-            var testText = @"
-using System;
-public class Class1
-{
-    {|result:void foo([[||]Class1 arg1) {}|}
-}";
+            var testText = """
+                using System;
+                public class Class1
+                {
+                    {|result:void foo([[||]Class1 arg1) {}|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37837")]
         public async Task TestEmptyParameter()
         {
-            var testText = @"
-using System;
-public class TestAttribute : Attribute { }
-public class Class1
-{
-    static void foo({|result:[Test][||]
-|}    {
-
-    }
-}";
+            var testText = """
+                using System;
+                public class TestAttribute : Attribute { }
+                public class Class1
+                {
+                    static void foo({|result:[Test][||]
+                |}    {
+
+                    }
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37584")]
         public async Task TestMissingEmptyMember2()
         {
-            var testText = @"
-using System;
-public class Class1
-{
-    [||]// Comment 
-    []
-}";
+            var testText = """
+                using System;
+                public class Class1
+                {
+                    [||]// Comment 
+                    []
+                }
+                """;
             await TestMissingAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/37584")]
         public async Task TestEmptyAttributeList()
         {
-            var testText = @"
-using System;
-public class Class1
-{
-    {|result:[]
-    [||]void a() {}|}
-}";
+            var testText = """
+                using System;
+                public class Class1
+                {
+                    {|result:[]
+                    [||]void a() {}|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestClimbLeftEdgeBeforeAttribute()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-
-    // Comment1
-    [||]{|result:[Test]
-    void M()
-    {
-    }|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+
+                    // Comment1
+                    [||]{|result:[Test]
+                    void M()
+                    {
+                    }|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestClimbLeftEdgeAfterAttribute()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-
-    {|result:[Test]
-    [||]void M()
-    {
-    }|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+
+                    {|result:[Test]
+                    [||]void M()
+                    {
+                    }|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestClimbLeftEdgeAfterAttributeComments()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-
-    // Comment1
-    {|result:[Test]
-    // Comment2
-    [||]void M()
-    {
-    }|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+
+                    // Comment1
+                    {|result:[Test]
+                    // Comment2
+                    [||]void M()
+                    {
+                    }|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestClimbLeftEdgeAfterAttributes()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    class Test2Attribute : Attribute { }
-
-    // Comment1
-    {|result:[Test]
-    [Test2]
-    // Comment2
-    [||]void M()
-    {
-    }|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    class Test2Attribute : Attribute { }
+
+                    // Comment1
+                    {|result:[Test]
+                    [Test2]
+                    // Comment2
+                    [||]void M()
+                    {
+                    }|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingBetweenAttributes()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    class Test2Attribute : Attribute { }
-
-    [Test]
-    [||][Test2]
-    void M()
-    {
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    class Test2Attribute : Attribute { }
+
+                    [Test]
+                    [||][Test2]
+                    void M()
+                    {
+                    }
+                }
+                """;
             await TestMissingAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingBetweenInAttributes()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-
-    [[||]Test]
-    void M()
-    {
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+
+                    [[||]Test]
+                    void M()
+                    {
+                    }
+                }
+                """;
             await TestMissingAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingSelectedAttributes()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    class Test2Attribute : Attribute { }
-
-    [|[Test]
-    [Test2]|]
-    void M()
-    {
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    class Test2Attribute : Attribute { }
+
+                    [|[Test]
+                    [Test2]|]
+                    void M()
+                    {
+                    }
+                }
+                """;
             await TestMissingAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingSelectedAttribute()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-
-    [|[Test]|]
-    void M()
-    {
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+
+                    [|[Test]|]
+                    void M()
+                    {
+                    }
+                }
+                """;
             await TestMissingAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestSelectedWholeNodeAndAttributes()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    class Test2Attribute : Attribute { }
-
-    // Comment1
-    [|{|result:[Test]
-    [Test2]
-    // Comment2
-    void M()
-    {
-    }|}|]
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    class Test2Attribute : Attribute { }
+
+                    // Comment1
+                    [|{|result:[Test]
+                    [Test2]
+                    // Comment2
+                    void M()
+                    {
+                    }|}|]
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestSelectedWholeNodeWithoutAttributes()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    class Test2Attribute : Attribute { }
-
-    // Comment1
-    {|result:[Test]
-    [Test2]
-    // Comment2
-    [|void M()
-    {
-    }|]|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    class Test2Attribute : Attribute { }
+
+                    // Comment1
+                    {|result:[Test]
+                    [Test2]
+                    // Comment2
+                    [|void M()
+                    {
+                    }|]|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
         #endregion
@@ -936,28 +989,30 @@ class Test2Attribute : Attribute { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestExtractionsClimbing()
         {
-            var testText = @"
-using System;
-class C
-{
-    void M()
-    {
-        var a = {|result:new object()|};[||]
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        var a = {|result:new object()|};[||]
+                    }
+                }
+                """;
             await TestAsync<ObjectCreationExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingExtractHeaderForSelection()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    [Test] public [|int|] a { get; set; }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    [Test] public [|int|] a { get; set; }
+                }
+                """;
             await TestMissingAsync<PropertyDeclarationSyntax>(testText);
         }
 
@@ -972,18 +1027,20 @@ public async Task TestMultipleExtractions()
 
             static string GetTestText(string data)
             {
-                return @"
-class C
-{
-    void M()
-    {
-        C LocalFunction(C c)
-        {
-            " + data + @"return null;
-        }
-        var a = new object();
-    }
-}";
+                return """
+                    class C
+                    {
+                        void M()
+                        {
+                            C LocalFunction(C c)
+                            {
+                    """ + data + """
+                    return null;
+                            }
+                            var a = new object();
+                        }
+                    }
+                    """;
 
             }
         }
@@ -993,102 +1050,109 @@ C LocalFunction(C c)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestExtractFromDeclaration()
         {
-            var testText = @"
-using System;
-class C
-{
-    void M()
-    {
-        [|var a = {|result:new object()|};|]
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        [|var a = {|result:new object()|};|]
+                    }
+                }
+                """;
             await TestAsync<ObjectCreationExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestExtractFromDeclaration2()
         {
-            var testText = @"
-using System;
-class C
-{
-    void M()
-    {
-        var a = [|{|result:new object()|};|]
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        var a = [|{|result:new object()|};|]
+                    }
+                }
+                """;
             await TestAsync<ObjectCreationExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestExtractFromAssignment()
         {
-            var testText = @"
-using System;
-class C
-{
-    void M()
-    {
-        object a;
-        a = [|{|result:new object()|};|]
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        object a;
+                        a = [|{|result:new object()|};|]
+                    }
+                }
+                """;
             await TestAsync<ObjectCreationExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestExtractFromDeclarator()
         {
-            var testText = @"
-using System;
-class C
-{
-    void M()
-    {
-        var [|a = {|result:new object()|}|];
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        var [|a = {|result:new object()|}|];
+                    }
+                }
+                """;
             await TestAsync<ObjectCreationExpressionSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestExtractFromDeclarator2()
         {
-            var testText = @"
-using System;
-class C
-{
-    void M()
-    {
-        {|result:var [|a = new object()|];|}
-    }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    void M()
+                    {
+                        {|result:var [|a = new object()|];|}
+                    }
+                }
+                """;
             await TestAsync<LocalDeclarationStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestExtractInHeaderOfProperty()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    {|result:[Test] public i[||]nt a { get; set; }|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    {|result:[Test] public i[||]nt a { get; set; }|}
+                }
+                """;
             await TestAsync<PropertyDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingExtractNotInHeaderOfProperty()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    [Test] public int a { [||]get; set; }
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    [Test] public int a { [||]get; set; }
+                }
+                """;
             await TestMissingAsync<PropertyDeclarationSyntax>(testText);
         }
 
@@ -1102,18 +1166,20 @@ class TestAttribute : Attribute { }
         [WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingInHeaderHole(string data)
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        C LocalFunction(C c)
-        {
-            " + data + @"return null;
-        }
-        var a = new object();
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        C LocalFunction(C c)
+                        {
+                """ + data + """
+                return null;
+                        }
+                        var a = new object();
+                    }
+                }
+                """;
             await TestMissingAsync<LocalDeclarationStatementSyntax>(testText);
         }
 
@@ -1128,18 +1194,20 @@ C LocalFunction(C c)
         [WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestInHeader(string data)
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        C LocalFunction(C c)
-        {
-            " + data + @"return null;
-        }
-        var a = new object();
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        C LocalFunction(C c)
+                        {
+                """ + data + """
+                return null;
+                        }
+                        var a = new object();
+                    }
+                }
+                """;
             await TestAsync<LocalDeclarationStatementSyntax>(testText);
         }
         #endregion
@@ -1148,65 +1216,68 @@ C LocalFunction(C c)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestNextToHidden()
         {
-            var testText = @"
-#line default
-class C
-{
-    void M()
-    {
-#line hidden
-        var a = b;
-#line default
-        {|result:C [||]LocalFunction(C c)
-        {
-            return null;
-        }|}
-    }
-}";
+            var testText = """
+                #line default
+                class C
+                {
+                    void M()
+                    {
+                #line hidden
+                        var a = b;
+                #line default
+                        {|result:C [||]LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestNextToHidden2()
         {
-            var testText = @"
-#line default
-class C
-{
-    void M()
-    {
-#line hidden
-        var a = b;
-#line default
-        {|result:C [||]LocalFunction(C c)
-        {
-            return null;
-        }|}
-#line hidden
-        var a = b;
-#line default
-    }
-}";
+            var testText = """
+                #line default
+                class C
+                {
+                    void M()
+                    {
+                #line hidden
+                        var a = b;
+                #line default
+                        {|result:C [||]LocalFunction(C c)
+                        {
+                            return null;
+                        }|}
+                #line hidden
+                        var a = b;
+                #line default
+                    }
+                }
+                """;
             await TestAsync<LocalFunctionStatementSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingHidden()
         {
-            var testText = @"
-#line default
-class C
-{
-    void M()
-    {
-#line hidden
-        C LocalFunction(C c)
-#line default
-        {
-            return null;
-        }[||]
-    }
-}";
+            var testText = """
+                #line default
+                class C
+                {
+                    void M()
+                    {
+                #line hidden
+                        C LocalFunction(C c)
+                #line default
+                        {
+                            return null;
+                        }[||]
+                    }
+                }
+                """;
             await TestMissingAsync<LocalFunctionStatementSyntax>(testText);
         }
         #endregion
@@ -1215,50 +1286,53 @@ C LocalFunction(C c)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingPredicate()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N([||]2+3);
-    }
-
-    void N(int a)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N([||]2+3);
+                    }
+
+                    void N(int a)
+                    {
+                    }
+                }
+                """;
             await TestMissingAsync<ArgumentSyntax>(testText, n => n.Parent is TupleExpressionSyntax);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgument()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N({|result:[||]2+3|});
-    }
-
-    void N(int a)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N({|result:[||]2+3|});
+                    }
+
+                    void N(int a)
+                    {
+                    }
+                }
+                """;
             await TestAsync<ArgumentSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestPredicate()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        var a = ({|result:[||]2 + 3|}, 2 + 3);
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        var a = ({|result:[||]2 + 3|}, 2 + 3);
+                    }
+                }
+                """;
             await TestAsync<ArgumentSyntax>(testText, n => n.Parent is TupleExpressionSyntax);
         }
         #endregion
@@ -1267,169 +1341,182 @@ void M()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsInInitializer()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C({|result:[Test]int a = [||]42|}, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C({|result:[Test]int a = [||]42|}, int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingArgumentsExtractionsSelectInitializer()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C([Test]int a = [|42|], int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C([Test]int a = [|42|], int b = 41) {}
+                }
+                """;
             await TestMissingAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingArgumentsExtractionsSelectComma()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C([Test]int a = 42[|,|] int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C([Test]int a = 42[|,|] int b = 41) {}
+                }
+                """;
             await TestMissingAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingArgumentsExtractionsInAttributes()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C([[||]Test]int a = 42, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C([[||]Test]int a = 42, int b = 41) {}
+                }
+                """;
             await TestMissingAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingArgumentsExtractionsSelectType1()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C([Test][|int|] a = 42, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C([Test][|int|] a = 42, int b = 41) {}
+                }
+                """;
             await TestMissingAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingArgumentsExtractionsSelectType2()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C([Test][|C|] a = null, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C([Test][|C|] a = null, int b = 41) {}
+                }
+                """;
             await TestMissingAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsAtTheEnd()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C({|result:[Test]int a = 42[||]|}, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C({|result:[Test]int a = 42[||]|}, int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsBefore()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C([||]{|result:[Test]int a = 42|}, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C([||]{|result:[Test]int a = 42|}, int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsSelectParamName()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C({|result:[Test]int [|a|] = 42|}, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C({|result:[Test]int [|a|] = 42|}, int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsSelectParam1()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C({|result:[Test][|int a|] = 42|}, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C({|result:[Test][|int a|] = 42|}, int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsSelectParam2()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C([|{|result:[Test]int a = 42|}|], int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C([|{|result:[Test]int a = 42|}|], int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsSelectParam3()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public C({|result:[Test][|int a = 42|]|}, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public C({|result:[Test][|int a = 42|]|}, int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestArgumentsExtractionsInHeader()
         {
-            var testText = @"
-using System;
-class CC
-{
-    class TestAttribute : Attribute { }
-    public CC({|result:[Test]C[||]C a = 42|}, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class CC
+                {
+                    class TestAttribute : Attribute { }
+                    public CC({|result:[Test]C[||]C a = 42|}, int b = 41) {}
+                }
+                """;
             await TestAsync<ParameterSyntax>(testText);
         }
 
@@ -1439,52 +1526,56 @@ public CC({|result:[Test]C[||]C a = 42|}, int b = 41) {}
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingMethodExplicitInterfaceSelection()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    public void [|I|].A([Test]int a = 42, int b = 41) {}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    public void [|I|].A([Test]int a = 42, int b = 41) {}
+                }
+                """;
             await TestMissingAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMethodCaretBeforeInterfaceSelection()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    {|result:public void [||]I.A([Test]int a = 42, int b = 41) {}|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    {|result:public void [||]I.A([Test]int a = 42, int b = 41) {}|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMethodNameAndExplicitInterfaceSelection()
         {
-            var testText = @"
-using System;
-class C
-{
-    class TestAttribute : Attribute { }
-    {|result:public void [|I.A|]([Test]int a = 42, int b = 41) {}|}
-}";
+            var testText = """
+                using System;
+                class C
+                {
+                    class TestAttribute : Attribute { }
+                    {|result:public void [|I.A|]([Test]int a = 42, int b = 41) {}|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMethodInHeader()
         {
-            var testText = @"
-using System;
-class CC
-{
-    class TestAttribute : Attribute { }
-    {|result:public C[||]C I.A([Test]int a = 42, int b = 41) { return null; }|}
-}";
+            var testText = """
+                using System;
+                class CC
+                {
+                    class TestAttribute : Attribute { }
+                    {|result:public C[||]C I.A([Test]int a = 42, int b = 41) { return null; }|}
+                }
+                """;
             await TestAsync<MethodDeclarationSyntax>(testText);
         }
 
@@ -1508,19 +1599,21 @@ class TestAttribute : Attribute { }
         [WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestLocalDeclarationInHeader(string data)
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        
-        C LocalFunction(C c)
-        {
-            " + data + @"return null;
-        }
-        var a = new object();
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+
+                        C LocalFunction(C c)
+                        {
+                """ + data + """
+                return null;
+                        }
+                        var a = new object();
+                    }
+                }
+                """;
             await TestAsync<LocalDeclarationStatementSyntax>(testText);
         }
 
@@ -1531,19 +1624,21 @@ C LocalFunction(C c)
         [WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingLocalDeclarationCaretInHeader(string data)
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        
-        C LocalFunction(C c)
-        {
-            " + data + @"return null;
-        }
-        var a = new object();
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+
+                        C LocalFunction(C c)
+                        {
+                """ + data + """
+                return null;
+                        }
+                        var a = new object();
+                    }
+                }
+                """;
             await TestMissingAsync<LocalDeclarationStatementSyntax>(testText);
         }
         #endregion
@@ -1553,72 +1648,78 @@ C LocalFunction(C c)
         public async Task TestMultiline_IfElseIfElseSelection1()
         {
             await TestAsync<IfStatementSyntax>(
-@"class A
-{
-    void Goo()
-    {
-        {|result:[|if (a)
-        {
-            a();
-        }|]
-        else if (b)
-        {
-            b();
-        }
-        else
-        {
-            c();
-        }|}
-    }
-}");
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        {|result:[|if (a)
+                        {
+                            a();
+                        }|]
+                        else if (b)
+                        {
+                            b();
+                        }
+                        else
+                        {
+                            c();
+                        }|}
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMultiline_IfElseIfElseSelection2()
         {
             await TestAsync<IfStatementSyntax>(
-@"class A
-{
-    void Goo()
-    {
-        {|result:[|if (a)
-        {
-            a();
-        }
-        else if (b)
-        {
-            b();
-        }
-        else
-        {
-            c();
-        }|]|}
-    }
-}");
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        {|result:[|if (a)
+                        {
+                            a();
+                        }
+                        else if (b)
+                        {
+                            b();
+                        }
+                        else
+                        {
+                            c();
+                        }|]|}
+                    }
+                }
+                """);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingMultiline_IfElseIfElseSelection()
         {
             await TestMissingAsync<IfStatementSyntax>(
-@"class A
-{
-    void Goo()
-    {
-        if (a)
-        {
-            a();
-        }
-        [|else if (b)
-        {
-            b();
-        }
-        else
-        {
-            c();
-        }|]
-    }
-}");
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        if (a)
+                        {
+                            a();
+                        }
+                        [|else if (b)
+                        {
+                            b();
+                        }
+                        else
+                        {
+                            c();
+                        }|]
+                    }
+                }
+                """);
         }
 
         #endregion
@@ -1627,56 +1728,59 @@ void Goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestDeepIn()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N({|result:2+[||]3+4|});
-    }
-
-    void N(int a)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N({|result:2+[||]3+4|});
+                    }
+
+                    void N(int a)
+                    {
+                    }
+                }
+                """;
             await TestAsync<ArgumentSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestMissingDeepInSecondRow()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        N(2
-            +[||]3+4);
-    }
-
-    void N(int a)
-    {
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        N(2
+                            +[||]3+4);
+                    }
+
+                    void N(int a)
+                    {
+                    }
+                }
+                """;
             await TestMissingAsync<ArgumentSyntax>(testText);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/35525")]
         public async Task TestDeepInExpression()
         {
-            var testText = @"
-class C
-{
-    void M()
-    {
-        var b = ({|result:N(2[||])|}, 0);
-    }
-
-    int N(int a)
-    {
-        return a;
-    }
-}";
+            var testText = """
+                class C
+                {
+                    void M()
+                    {
+                        var b = ({|result:N(2[||])|}, 0);
+                    }
+
+                    int N(int a)
+                    {
+                        return a;
+                    }
+                }
+                """;
             await TestAsync<ArgumentSyntax>(testText, predicate: n => n.Parent is TupleExpressionSyntax);
         }
         #endregion
diff --git a/src/EditorFeatures/CSharpTest/Rename/CSharpRenamerTests.cs b/src/EditorFeatures/CSharpTest/Rename/CSharpRenamerTests.cs
index be1848f028a41..6f3750c8babd5 100644
--- a/src/EditorFeatures/CSharpTest/Rename/CSharpRenamerTests.cs
+++ b/src/EditorFeatures/CSharpTest/Rename/CSharpRenamerTests.cs
@@ -73,28 +73,30 @@ public Task CSharp_RenameDocument_RenamePartialClass()
             {
                 new DocumentWithInfo()
                 {
-                    Text = @"
-namespace Test
-{    
-    partial class C
-    {
-    }
-}",
+                    Text = """
+                    namespace Test
+                    {    
+                        partial class C
+                        {
+                        }
+                    }
+                    """,
                     DocumentFilePath = @"Test\Folder\Path\C.cs",
                     DocumentName = "C.cs"
                 },
                 new DocumentWithInfo()
                 {
-                    Text = @"
-namespace Test
-{    
-    partial class C
-    {
-        class Other
-        {
-        }
-    }
-}",
+                    Text = """
+                    namespace Test
+                    {    
+                        partial class C
+                        {
+                            class Other
+                            {
+                            }
+                        }
+                    }
+                    """,
                     DocumentFilePath = @"Test\Folder\Path\C.Other.cs",
                     DocumentName = "C.Other.cs"
                 }
@@ -104,28 +106,30 @@ class Other
             {
                 new DocumentWithInfo()
                 {
-                    Text = @"
-namespace Test
-{    
-    partial class C2
-    {
-    }
-}",
+                    Text = """
+                    namespace Test
+                    {    
+                        partial class C2
+                        {
+                        }
+                    }
+                    """,
                     DocumentFilePath = @"Test\Folder\Path\C2.cs",
                     DocumentName = "C2.cs"
                 },
                 new DocumentWithInfo()
                 {
-                    Text = @"
-namespace Test
-{    
-    partial class C2
-    {
-        class Other
-        {
-        }
-    }
-}",
+                    Text = """
+                    namespace Test
+                    {    
+                        partial class C2
+                        {
+                            class Other
+                            {
+                            }
+                        }
+                    }
+                    """,
                     DocumentFilePath = @"Test\Folder\Path\C.Other.cs",
                     DocumentName = "C.Other.cs"
                 }
@@ -137,30 +141,36 @@ class Other
         [Fact]
         public Task CSharp_RenameDocument_NoRenameNamespace()
         => TestEmptyActionSet(
-@"namespace Test.Path
-{
-    class C
-    {
-    }
-}",
+            """
+            namespace Test.Path
+            {
+                class C
+                {
+                }
+            }
+            """,
         documentPath: @"Test\Path\Document.cs",
         documentName: @"Document.cs");
 
         [Fact]
         public Task CSharp_RenameDocument_RenameNamespace()
         => TestRenameDocument(
-@"namespace Test.Path
-{
-    class C
-    {
-    }
-}",
-@"namespace Test.Path.After.Test
-{
-    class C
-    {
-    }
-}",
+            """
+            namespace Test.Path
+            {
+                class C
+                {
+                }
+            }
+            """,
+            """
+            namespace Test.Path.After.Test
+            {
+                class C
+                {
+                }
+            }
+            """,
         documentPath: @"Test\Path\Document.cs",
         documentName: @"Document.cs",
         newDocumentPath: @"Test\Path\After\Test\Document.cs");
@@ -168,32 +178,36 @@ class C
         [Fact]
         public Task CSharp_RenameDocument_RenameMultipleNamespaces()
        => TestRenameDocument(
-@"namespace Test.Path
-{
-    class C
-    {
-    }
-}
-
-namespace Test.Path
-{
-    class C2
-    {
-    }
-}",
-@"namespace Test.Path.After.Test
-{
-    class C
-    {
-    }
-}
-
-namespace Test.Path.After.Test
-{
-    class C2
-    {
-    }
-}",
+           """
+           namespace Test.Path
+           {
+               class C
+               {
+               }
+           }
+
+           namespace Test.Path
+           {
+               class C2
+               {
+               }
+           }
+           """,
+           """
+           namespace Test.Path.After.Test
+           {
+               class C
+               {
+               }
+           }
+
+           namespace Test.Path.After.Test
+           {
+               class C2
+               {
+               }
+           }
+           """,
        documentPath: @"Test\Path\Document.cs",
        documentName: @"Document.cs",
        newDocumentPath: @"Test\Path\After\Test\Document.cs");
@@ -201,46 +215,50 @@ class C2
         [Fact]
         public Task CSharp_RenameDocument_RenameMultipleNamespaces2()
        => TestRenameDocument(
-@"namespace Test.Path
-{
-    class C
-    {
-    }
-}
-
-namespace Test.Path
-{
-    class C2
-    {
-    }
-}
-
-namespace Other.Namespace
-{
-    class C3
-    {
-    }
-}",
-@"namespace Test.Path.After.Test
-{
-    class C
-    {
-    }
-}
-
-namespace Test.Path.After.Test
-{
-    class C2
-    {
-    }
-}
-
-namespace Other.Namespace
-{
-    class C3
-    {
-    }
-}",
+           """
+           namespace Test.Path
+           {
+               class C
+               {
+               }
+           }
+
+           namespace Test.Path
+           {
+               class C2
+               {
+               }
+           }
+
+           namespace Other.Namespace
+           {
+               class C3
+               {
+               }
+           }
+           """,
+           """
+           namespace Test.Path.After.Test
+           {
+               class C
+               {
+               }
+           }
+
+           namespace Test.Path.After.Test
+           {
+               class C2
+               {
+               }
+           }
+
+           namespace Other.Namespace
+           {
+               class C3
+               {
+               }
+           }
+           """,
        documentPath: @"Test\Path\Document.cs",
        documentName: @"Document.cs",
        newDocumentPath: @"Test\Path\After\Test\Document.cs");
@@ -248,46 +266,50 @@ class C3
         [Fact]
         public Task CSharp_RenameDocument_RenameMultipleNamespaces3()
        => TestRenameDocument(
-@"namespace Test.Path
-{
-    class C
-    {
-    }
-}
-
-namespace Other.Namespace
-{
-    class C2
-    {
-    }
-}
-
-namespace Test.Path
-{
-    class C3
-    {
-    }
-}",
-@"namespace Test.Path.After.Test
-{
-    class C
-    {
-    }
-}
-
-namespace Other.Namespace
-{
-    class C2
-    {
-    }
-}
-
-namespace Test.Path.After.Test
-{
-    class C3
-    {
-    }
-}",
+           """
+           namespace Test.Path
+           {
+               class C
+               {
+               }
+           }
+
+           namespace Other.Namespace
+           {
+               class C2
+               {
+               }
+           }
+
+           namespace Test.Path
+           {
+               class C3
+               {
+               }
+           }
+           """,
+           """
+           namespace Test.Path.After.Test
+           {
+               class C
+               {
+               }
+           }
+
+           namespace Other.Namespace
+           {
+               class C2
+               {
+               }
+           }
+
+           namespace Test.Path.After.Test
+           {
+               class C3
+               {
+               }
+           }
+           """,
        documentPath: @"Test\Path\Document.cs",
        documentName: @"Document.cs",
        newDocumentPath: @"Test\Path\After\Test\Document.cs");
@@ -295,38 +317,42 @@ class C3
         [Fact]
         public Task CSharp_RenameDocument_RenameMultipleNamespaces_Nested()
 => TestRenameDocument(
-@"namespace Test.Path
-{
-    class C
+    """
+    namespace Test.Path
     {
+        class C
+        {
+        }
     }
-}
 
-namespace Test
-{
-    namespace Path
+    namespace Test
     {
-        class C2
+        namespace Path
         {
+            class C2
+            {
+            }
         }
     }
-}",
-@"namespace Test.Path.After.Test
-{
-    class C
+    """,
+    """
+    namespace Test.Path.After.Test
     {
+        class C
+        {
+        }
     }
-}
 
-namespace Test
-{
-    namespace Path
+    namespace Test
     {
-        class C2
+        namespace Path
         {
+            class C2
+            {
+            }
         }
     }
-}",
+    """,
 documentPath: @"Test\Path\Document.cs",
 documentName: @"Document.cs",
 newDocumentPath: @"Test\Path\After\Test\Document.cs");
@@ -334,18 +360,22 @@ class C2
         [Fact]
         public Task CSharp_RenameDocument_RenameNamespace2()
         => TestRenameDocument(
-@"namespace Test.Path
-{
-    class C
-    {
-    }
-}",
-@"namespace Test
-{
-    class C
-    {
-    }
-}",
+            """
+            namespace Test.Path
+            {
+                class C
+                {
+                }
+            }
+            """,
+            """
+            namespace Test
+            {
+                class C
+                {
+                }
+            }
+            """,
         documentPath: @"Test\Path\Document.cs",
         documentName: @"Document.cs",
         newDocumentPath: @"Test\Document.cs");
@@ -353,18 +383,22 @@ class C
         [Fact]
         public Task CSharp_RenameDocument_RenameNamespaceAndClass()
         => TestRenameDocument(
-@"namespace Test.Path
-{
-    class C
-    {
-    }
-}",
-@"namespace Test
-{
-    class C2
-    {
-    }
-}",
+            """
+            namespace Test.Path
+            {
+                class C
+                {
+                }
+            }
+            """,
+            """
+            namespace Test
+            {
+                class C2
+                {
+                }
+            }
+            """,
         documentPath: @"Test\Path\C2.cs",
         documentName: @"C.cs",
         newDocumentName: @"C2",
@@ -375,8 +409,10 @@ public Task CSharp_RenameDocument_MappedDocumentHasNoResults()
         {
             var documentName = "Component1.razor";
             var documentText =
-@"<h3>Component1</h3>
-@code {}";
+                """
+                <h3>Component1</h3>
+                @code {}
+                """;
 
             return TestRenameMappedFile(documentText, documentName, newDocumentName: "MyComponent.razor");
         }
diff --git a/src/EditorFeatures/CSharpTest/Semantics/SpeculationAnalyzerTests.cs b/src/EditorFeatures/CSharpTest/Semantics/SpeculationAnalyzerTests.cs
index 2caf61f34a7f8..da86e338d915b 100644
--- a/src/EditorFeatures/CSharpTest/Semantics/SpeculationAnalyzerTests.cs
+++ b/src/EditorFeatures/CSharpTest/Semantics/SpeculationAnalyzerTests.cs
@@ -24,16 +24,17 @@ public class SpeculationAnalyzerTests : SpeculationAnalyzerTestsBase
         [Fact]
         public void SpeculationAnalyzerDifferentOverloads()
         {
-            Test(@"
-class Program
-{
-    void Vain(int arg = 3) { }
-    void Vain(string arg) { }
-    void Main()
-    {
-        [|Vain(5)|];
-    }
-}           ", "Vain(string.Empty)", true);
+            Test("""
+                class Program
+                {
+                    void Vain(int arg = 3) { }
+                    void Vain(string arg) { }
+                    void Main()
+                    {
+                        [|Vain(5)|];
+                    }
+                }
+                """, "Vain(string.Empty)", true);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/672396")]
@@ -43,247 +44,263 @@ public void SpeculationAnalyzerExtensionMethodExplicitInvocation()
             // practice this is fine as the only thing that makes this change is complexification, and we don't test for
             // semantics changed after that as the purpose of complexification is to put us in a safe place to make
             // changes that won't break semantics.
-            Test(@"
-static class Program
-{
-    public static void Vain(this int arg) { }
-    static void Main()
-    {
-        [|5.Vain()|];
-    }
-}           ", "Vain(5)", semanticChanges: true);
+            Test("""
+                static class Program
+                {
+                    public static void Vain(this int arg) { }
+                    static void Main()
+                    {
+                        [|5.Vain()|];
+                    }
+                }
+                """, "Vain(5)", semanticChanges: true);
         }
 
         [Fact]
         public void SpeculationAnalyzerImplicitBaseClassConversion()
         {
-            Test(@"
-using System;
-class Program
-{
-    void Main()
-    {
-        Exception ex = [|(Exception)new InvalidOperationException()|];
-    }
-}           ", "new InvalidOperationException()", false);
+            Test("""
+                using System;
+                class Program
+                {
+                    void Main()
+                    {
+                        Exception ex = [|(Exception)new InvalidOperationException()|];
+                    }
+                }
+                """, "new InvalidOperationException()", false);
         }
 
         [Fact]
         public void SpeculationAnalyzerImplicitNumericConversion()
         {
-            Test(@"
-class Program
-{
-    void Main()
-    {
-        long i = [|(long)5|];
-    }
-}           ", "5", false);
+            Test("""
+                class Program
+                {
+                    void Main()
+                    {
+                        long i = [|(long)5|];
+                    }
+                }
+                """, "5", false);
         }
 
         [Fact]
         public void SpeculationAnalyzerImplicitUserConversion()
         {
-            Test(@"
-class From
-{
-    public static implicit operator To(From from) { return new To(); }
-}
-class To { }
-class Program
-{
-    void Main()
-    {
-        To to = [|(To)new From()|];
-    }
-}           ", "new From()", true);
+            Test("""
+                class From
+                {
+                    public static implicit operator To(From from) { return new To(); }
+                }
+                class To { }
+                class Program
+                {
+                    void Main()
+                    {
+                        To to = [|(To)new From()|];
+                    }
+                }
+                """, "new From()", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerExplicitConversion()
         {
-            Test(@"
-using System;
-class Program
-{
-    void Main()
-    {
-        Exception ex1 = new InvalidOperationException();
-        var ex2 = [|(InvalidOperationException)ex1|];
-    }
-}           ", "ex1", true);
+            Test("""
+                using System;
+                class Program
+                {
+                    void Main()
+                    {
+                        Exception ex1 = new InvalidOperationException();
+                        var ex2 = [|(InvalidOperationException)ex1|];
+                    }
+                }
+                """, "ex1", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerArrayImplementingNonGenericInterface()
         {
-            Test(@"
-using System.Collections;
-class Program
-{
-    void Main()
-    {
-        var a = new[] { 1, 2, 3 };
-        [|((IEnumerable)a).GetEnumerator()|];
-    }
-}           ", "a.GetEnumerator()", false);
+            Test("""
+                using System.Collections;
+                class Program
+                {
+                    void Main()
+                    {
+                        var a = new[] { 1, 2, 3 };
+                        [|((IEnumerable)a).GetEnumerator()|];
+                    }
+                }
+                """, "a.GetEnumerator()", false);
         }
 
         [Fact]
         public void SpeculationAnalyzerVirtualMethodWithBaseConversion()
         {
-            Test(@"
-using System;
-using System.IO;
-class Program
-{
-    void Main()
-    {
-        var s = new MemoryStream();
-        [|((Stream)s).Flush()|];
-    }
-}            ", "s.Flush()", false);
+            Test("""
+                using System;
+                using System.IO;
+                class Program
+                {
+                    void Main()
+                    {
+                        var s = new MemoryStream();
+                        [|((Stream)s).Flush()|];
+                    }
+                }
+                """, "s.Flush()", false);
         }
 
         [Fact]
         public void SpeculationAnalyzerNonVirtualMethodImplementingInterface()
         {
-            Test(@"
-using System;
-class Class : IComparable
-{
-    public int CompareTo(object other) { return 1; }
-}
-class Program
-{
-    static void Main()
-    {
-        var c = new Class();
-        var d = new Class();
-        [|((IComparable)c).CompareTo(d)|];
-    }
-}           ", "c.CompareTo(d)", true);
+            Test("""
+                using System;
+                class Class : IComparable
+                {
+                    public int CompareTo(object other) { return 1; }
+                }
+                class Program
+                {
+                    static void Main()
+                    {
+                        var c = new Class();
+                        var d = new Class();
+                        [|((IComparable)c).CompareTo(d)|];
+                    }
+                }
+                """, "c.CompareTo(d)", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerSealedClassImplementingInterface()
         {
-            Test(@"
-using System;
-sealed class Class : IComparable
-{
-    public int CompareTo(object other) { return 1; }
-}
-class Program
-{
-    static void Main()
-    {
-        var c = new Class();
-        var d = new Class();
-        [|((IComparable)c).CompareTo(d)|];
-    }
-}           ", "((IComparable)c).CompareTo(d)", semanticChanges: false);
+            Test("""
+                using System;
+                sealed class Class : IComparable
+                {
+                    public int CompareTo(object other) { return 1; }
+                }
+                class Program
+                {
+                    static void Main()
+                    {
+                        var c = new Class();
+                        var d = new Class();
+                        [|((IComparable)c).CompareTo(d)|];
+                    }
+                }
+                """, "((IComparable)c).CompareTo(d)", semanticChanges: false);
         }
 
         [Fact]
         public void SpeculationAnalyzerValueTypeImplementingInterface()
         {
-            Test(@"
-using System;
-class Program
-{
-    void Main()
-    {
-        decimal d = 5;
-        [|((IComparable<decimal>)d).CompareTo(6)|];
-    }
-}           ", "d.CompareTo(6)", false);
+            Test("""
+                using System;
+                class Program
+                {
+                    void Main()
+                    {
+                        decimal d = 5;
+                        [|((IComparable<decimal>)d).CompareTo(6)|];
+                    }
+                }
+                """, "d.CompareTo(6)", false);
         }
 
         [Fact]
         public void SpeculationAnalyzerBinaryExpressionIntVsLong()
         {
-            Test(@"
-class Program
-{
-    void Main()
-    {
-        var r = [|1+1L|];
-    }
-}           ", "1+1", true);
+            Test("""
+                class Program
+                {
+                    void Main()
+                    {
+                        var r = [|1+1L|];
+                    }
+                }
+                """, "1+1", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerQueryExpressionSelectType()
         {
-            Test(@"
-using System.Linq;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var items = [|from i in Enumerable.Range(0, 3) select (long)i|];
-    }
-}           ", "from i in Enumerable.Range(0, 3) select i", true);
+            Test("""
+                using System.Linq;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var items = [|from i in Enumerable.Range(0, 3) select (long)i|];
+                    }
+                }
+                """, "from i in Enumerable.Range(0, 3) select i", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerQueryExpressionFromType()
         {
-            Test(@"
-using System.Linq;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var items = [|from i in new long[0] select i|];
-    }
-}           ", "from i in new int[0] select i", true);
+            Test("""
+                using System.Linq;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var items = [|from i in new long[0] select i|];
+                    }
+                }
+                """, "from i in new int[0] select i", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerQueryExpressionGroupByType()
         {
-            Test(@"
-using System.Linq;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var items = [|from i in Enumerable.Range(0, 3) group (long)i by i|];
-    }
-}           ", "from i in Enumerable.Range(0, 3) group i by i", true);
+            Test("""
+                using System.Linq;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var items = [|from i in Enumerable.Range(0, 3) group (long)i by i|];
+                    }
+                }
+                """, "from i in Enumerable.Range(0, 3) group i by i", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerQueryExpressionOrderByType()
         {
-            Test(@"
-using System.Linq;
-class Program
-{
-    static void Main(string[] args)
-    {
-        var items = from i in Enumerable.Range(0, 3) orderby [|(long)i|] select i;
-    }
-}           ", "i", true);
+            Test("""
+                using System.Linq;
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var items = from i in Enumerable.Range(0, 3) orderby [|(long)i|] select i;
+                    }
+                }
+                """, "i", true);
         }
 
         [Fact]
         public void SpeculationAnalyzerDifferentAttributeConstructors()
         {
-            Test(@"
-using System;
-class AnAttribute : Attribute
-{
-    public AnAttribute(string a, long b) { }
-    public AnAttribute(int a, int b) { }
-}
-class Program
-{
-    [An([|""5""|], 6)]
-    static void Main() { }
-}           ", "5", false, "6");
+            Test("""
+                using System;
+                class AnAttribute : Attribute
+                {
+                    public AnAttribute(string a, long b) { }
+                    public AnAttribute(int a, int b) { }
+                }
+                class Program
+                {
+                    [An([|"5"|], 6)]
+                    static void Main() { }
+                }
+                """, "5", false, "6");
 
             // Note: the answer should have been that the replacement does change semantics (true),
             // however to have enough context one must analyze AttributeSyntax instead of separate ExpressionSyntaxes it contains,
@@ -293,209 +310,213 @@ static void Main() { }
         [Fact]
         public void SpeculationAnalyzerCollectionInitializers()
         {
-            Test(@"
-using System.Collections;
-class Collection : IEnumerable
-{
-    public IEnumerator GetEnumerator() { throw new System.NotImplementedException(); }
-    public void Add(string s) { }
-    public void Add(int i) { }
-    void Main()
-    {
-        var c = new Collection { [|""5""|] };
-    }
-}           ", "5", true);
+            Test("""
+                using System.Collections;
+                class Collection : IEnumerable
+                {
+                    public IEnumerator GetEnumerator() { throw new System.NotImplementedException(); }
+                    public void Add(string s) { }
+                    public void Add(int i) { }
+                    void Main()
+                    {
+                        var c = new Collection { [|"5"|] };
+                    }
+                }
+                """, "5", true);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1088815")]
         public void SpeculationAnalyzerBrokenCode()
         {
-            Test(@"
-public interface IRogueAction
-{
-    public string Name { get; private set; }
-
-    protected IRogueAction(string name)
-    {
-        [|this.Name|] = name;
-    }
-}           ", "Name", semanticChanges: false, isBrokenCode: true);
+            Test("""
+                public interface IRogueAction
+                {
+                    public string Name { get; private set; }
+
+                    protected IRogueAction(string name)
+                    {
+                        [|this.Name|] = name;
+                    }
+                }
+                """, "Name", semanticChanges: false, isBrokenCode: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8111")]
         public void SpeculationAnalyzerAnonymousObjectMemberDeclaredWithNeededCast()
         {
-            Test(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        object thing = new { shouldBeAnInt = [|(int)Directions.South|] };
-    }
-    public enum Directions { North, East, South, West }
-}           ", "Directions.South", semanticChanges: true);
+            Test("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        object thing = new { shouldBeAnInt = [|(int)Directions.South|] };
+                    }
+                    public enum Directions { North, East, South, West }
+                }
+                """, "Directions.South", semanticChanges: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/8111")]
         public void SpeculationAnalyzerAnonymousObjectMemberDeclaredWithUnneededCast()
         {
-            Test(@"
-class Program
-{
-    static void Main(string[] args)
-    {
-        object thing = new { shouldBeAnInt = [|(Directions)Directions.South|] };
-    }
-    public enum Directions { North, East, South, West }
-}           ", "Directions.South", semanticChanges: false);
+            Test("""
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        object thing = new { shouldBeAnInt = [|(Directions)Directions.South|] };
+                    }
+                    public enum Directions { North, East, South, West }
+                }
+                """, "Directions.South", semanticChanges: false);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19987")]
         public void SpeculationAnalyzerSwitchCaseWithRedundantCast()
         {
-            Test(@"
-class Program
-{
-    static void Main(string[] arts)
-    {
-        var x = 1f;
-        switch (x)
-        {
-            case [|(float) 1|]:
-                System.Console.WriteLine(""one"");
-                break;
-
-            default:
-                System.Console.WriteLine(""not one"");
-                break;
-        }
-    }
-}
-            ", "1", semanticChanges: false);
+            Test("""
+                class Program
+                {
+                    static void Main(string[] arts)
+                    {
+                        var x = 1f;
+                        switch (x)
+                        {
+                            case [|(float) 1|]:
+                                System.Console.WriteLine("one");
+                                break;
+
+                            default:
+                                System.Console.WriteLine("not one");
+                                break;
+                        }
+                    }
+                }
+                """, "1", semanticChanges: false);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/19987")]
         public void SpeculationAnalyzerSwitchCaseWithRequiredCast()
         {
-            Test(@"
-class Program
-{
-    static void Main(string[] arts)
-    {
-        object x = 1f;
-        switch (x)
-        {
-            case [|(float) 1|]: // without the case, object x does not match int 1
-                System.Console.WriteLine(""one"");
-                break;
-
-            default:
-                System.Console.WriteLine(""not one"");
-                break;
-        }
-    }
-}
-            ", "1", semanticChanges: true);
+            Test("""
+                class Program
+                {
+                    static void Main(string[] arts)
+                    {
+                        object x = 1f;
+                        switch (x)
+                        {
+                            case [|(float) 1|]: // without the case, object x does not match int 1
+                                System.Console.WriteLine("one");
+                                break;
+
+                            default:
+                                System.Console.WriteLine("not one");
+                                break;
+                        }
+                    }
+                }
+                """, "1", semanticChanges: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28412")]
         public void SpeculationAnalyzerIndexerPropertyWithRedundantCast()
         {
-            Test(code: @"
-class Indexer
-{
-    public int this[int x] { get { return x; } }
-}
-class A
-{
-    public Indexer Foo { get; } = new Indexer();
-}
-class B : A
-{
-}
-class Program
-{
-    static void Main(string[] args)
-    {
-        var b = new B();
-        var y = ([|(A)b|]).Foo[1];
-    }
-}
-", replacementExpression: "b", semanticChanges: false);
+            Test(code: """
+                class Indexer
+                {
+                    public int this[int x] { get { return x; } }
+                }
+                class A
+                {
+                    public Indexer Foo { get; } = new Indexer();
+                }
+                class B : A
+                {
+                }
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var b = new B();
+                        var y = ([|(A)b|]).Foo[1];
+                    }
+                }
+                """, replacementExpression: "b", semanticChanges: false);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28412")]
         public void SpeculationAnalyzerIndexerPropertyWithRequiredCast()
         {
-            Test(code: @"
-class Indexer
-{
-    public int this[int x] { get { return x; } }
-}
-class A
-{
-    public Indexer Foo { get; } = new Indexer();
-}
-class B : A
-{
-    public new Indexer Foo { get; } = new Indexer();
-}
-class Program
-{
-    static void Main(string[] args)
-    {
-        var b = new B();
-        var y = ([|(A)b|]).Foo[1];
-    }
-}
-", replacementExpression: "b", semanticChanges: true);
+            Test(code: """
+                class Indexer
+                {
+                    public int this[int x] { get { return x; } }
+                }
+                class A
+                {
+                    public Indexer Foo { get; } = new Indexer();
+                }
+                class B : A
+                {
+                    public new Indexer Foo { get; } = new Indexer();
+                }
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var b = new B();
+                        var y = ([|(A)b|]).Foo[1];
+                    }
+                }
+                """, replacementExpression: "b", semanticChanges: true);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28412")]
         public void SpeculationAnalyzerDelegatePropertyWithRedundantCast()
         {
-            Test(code: @"
-public delegate void MyDelegate();
-class A
-{
-    public MyDelegate Foo { get; }
-}
-class B : A
-{
-}
-class Program
-{
-    static void Main(string[] args)
-    {
-        var b = new B();
-        ([|(A)b|]).Foo();
-    }
-}
-", replacementExpression: "b", semanticChanges: false);
+            Test(code: """
+                public delegate void MyDelegate();
+                class A
+                {
+                    public MyDelegate Foo { get; }
+                }
+                class B : A
+                {
+                }
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var b = new B();
+                        ([|(A)b|]).Foo();
+                    }
+                }
+                """, replacementExpression: "b", semanticChanges: false);
         }
 
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/28412")]
         public void SpeculationAnalyzerDelegatePropertyWithRequiredCast()
         {
-            Test(code: @"
-public delegate void MyDelegate();
-class A
-{
-    public MyDelegate Foo { get; }
-}
-class B : A
-{
-    public new MyDelegate Foo { get; }
-}
-class Program
-{
-    static void Main(string[] args)
-    {
-        var b = new B();
-        ([|(A)b|]).Foo();
-    }
-}
-", replacementExpression: "b", semanticChanges: true);
+            Test(code: """
+                public delegate void MyDelegate();
+                class A
+                {
+                    public MyDelegate Foo { get; }
+                }
+                class B : A
+                {
+                    public new MyDelegate Foo { get; }
+                }
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        var b = new B();
+                        ([|(A)b|]).Foo();
+                    }
+                }
+                """, replacementExpression: "b", semanticChanges: true);
         }
 
         protected override SyntaxTree Parse(string text)
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/AttributeSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/AttributeSignatureHelpProviderTests.cs
index d00d76e57bde0..77912de108902 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/AttributeSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/AttributeSignatureHelpProviderTests.cs
@@ -27,15 +27,16 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task TestInvocationWithoutParameters()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                }
 
-[[|Something($$|]]
-class D
-{
-}";
+                [[|Something($$|]]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -46,17 +47,18 @@ class D
         [Fact]
         public async Task TestInvocationWithoutParametersMethodXmlComments()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <summary>Summary For Attribute</summary>
-    public SomethingAttribute() { }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <summary>Summary For Attribute</summary>
+                    public SomethingAttribute() { }
+                }
 
-[[|Something($$|]]
-class D
-{
-}";
+                [[|Something($$|]]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", "Summary For Attribute", null, currentParameterIndex: 0));
@@ -67,16 +69,16 @@ class D
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25830")]
         public async Task PickCorrectOverload_PickInt()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public SomethingAttribute(string i) => throw null;
-    public SomethingAttribute(int i) => throw null;
-    public SomethingAttribute(byte filtered) => throw null;
-}
-[[|Something(i: 1$$|])]
-class D { }
-";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public SomethingAttribute(string i) => throw null;
+                    public SomethingAttribute(int i) => throw null;
+                    public SomethingAttribute(byte filtered) => throw null;
+                }
+                [[|Something(i: 1$$|])]
+                class D { }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("SomethingAttribute(int i)", currentParameterIndex: 0, isSelected: true),
@@ -89,16 +91,16 @@ class D { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25830")]
         public async Task PickCorrectOverload_PickString()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public SomethingAttribute(string i) => throw null;
-    public SomethingAttribute(int i) => throw null;
-    public SomethingAttribute(byte filtered) => throw null;
-}
-[[|Something(i: null$$|])]
-class D { }
-";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public SomethingAttribute(string i) => throw null;
+                    public SomethingAttribute(int i) => throw null;
+                    public SomethingAttribute(byte filtered) => throw null;
+                }
+                [[|Something(i: null$$|])]
+                class D { }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("SomethingAttribute(int i)", currentParameterIndex: 0),
@@ -111,16 +113,17 @@ class D { }
         [Fact]
         public async Task TestInvocationWithParametersOn1()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public SomethingAttribute(int someInteger, string someString) { }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public SomethingAttribute(int someInteger, string someString) { }
+                }
 
-[[|Something($$|]]
-class D
-{
-}";
+                [[|Something($$|]]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute(int someInteger, string someString)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -131,21 +134,22 @@ class D
         [Fact]
         public async Task TestInvocationWithParametersXmlCommentsOn1()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <summary>
-    /// Summary For Attribute
-    /// </summary>
-    /// <param name=""someInteger"">Param someInteger</param>
-    /// <param name=""someString"">Param someString</param>
-    public SomethingAttribute(int someInteger, string someString) { }
-}
-
-[[|Something($$
-|]class D
-{
-}";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <summary>
+                    /// Summary For Attribute
+                    /// </summary>
+                    /// <param name="someInteger">Param someInteger</param>
+                    /// <param name="someString">Param someString</param>
+                    public SomethingAttribute(int someInteger, string someString) { }
+                }
+
+                [[|Something($$
+                |]class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute(int someInteger, string someString)", "Summary For Attribute", "Param someInteger", currentParameterIndex: 0));
@@ -156,16 +160,17 @@ public SomethingAttribute(int someInteger, string someString) { }
         [Fact]
         public async Task TestInvocationWithParametersOn2()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public SomethingAttribute(int someInteger, string someString) { }
-}
-
-[[|Something(22, $$|]]
-class D
-{
-}";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public SomethingAttribute(int someInteger, string someString) { }
+                }
+
+                [[|Something(22, $$|]]
+                class D
+                {
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute(int someInteger, string someString)", string.Empty, string.Empty, currentParameterIndex: 1));
 
@@ -175,21 +180,22 @@ class D
         [Fact]
         public async Task TestInvocationWithParametersXmlComentsOn2()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <summary>
-    /// Summary For Attribute
-    /// </summary>
-    /// <param name=""someInteger"">Param someInteger</param>
-    /// <param name=""someString"">Param someString</param>
-    public SomethingAttribute(int someInteger, string someString) { }
-}
-
-[[|Something(22, $$
-|]class D
-{
-}";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <summary>
+                    /// Summary For Attribute
+                    /// </summary>
+                    /// <param name="someInteger">Param someInteger</param>
+                    /// <param name="someString">Param someString</param>
+                    public SomethingAttribute(int someInteger, string someString) { }
+                }
+
+                [[|Something(22, $$
+                |]class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute(int someInteger, string someString)", "Summary For Attribute", "Param someString", currentParameterIndex: 1));
@@ -200,14 +206,15 @@ public SomethingAttribute(int someInteger, string someString) { }
         [Fact]
         public async Task TestInvocationWithClosingParen()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{ }
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                { }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -219,47 +226,53 @@ class D
         public async Task TestInvocationSpan1()
         {
             await TestAsync(
-@"using System;
+                """
+                using System;
 
-class C
-{
-    [[|Obsolete($$|])]
-    void Goo()
-    {
-    }
-}");
+                class C
+                {
+                    [[|Obsolete($$|])]
+                    void Goo()
+                    {
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInvocationSpan2()
         {
             await TestAsync(
-@"using System;
+                """
+                using System;
 
-class C
-{
-    [[|Obsolete($$|])]
-    void Goo()
-    {
-    }
-}");
+                class C
+                {
+                    [[|Obsolete($$|])]
+                    void Goo()
+                    {
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestInvocationSpan3()
         {
             await TestAsync(
-@"using System;
+                """
+                using System;
 
-class C
-{
-    [[|Obsolete(
+                class C
+                {
+                    [[|Obsolete(
 
-$$|]]
-    void Goo()
-    {
-    }
-}");
+                $$|]]
+                    void Goo()
+                    {
+                    }
+                }
+                """);
         }
 
         #endregion
@@ -269,18 +282,19 @@ void Goo()
         [Fact]
         public async Task TestCurrentParameterName()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-class SomethingAttribute : Attribute
-{
-    public SomethingAttribute(int someParameter, bool somethingElse) { }
-}
+                class SomethingAttribute : Attribute
+                {
+                    public SomethingAttribute(int someParameter, bool somethingElse) { }
+                }
 
-[[|Something(somethingElse: false, someParameter: $$22|])]
-class C
-{
-}";
+                [[|Something(somethingElse: false, someParameter: $$22|])]
+                class C
+                {
+                }
+                """;
 
             await VerifyCurrentParameterNameAsync(markup, "someParameter");
         }
@@ -293,16 +307,17 @@ class C
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545425")]
         public async Task TestAttributeWithValidField()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public int goo;
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public int goo;
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"SomethingAttribute({CSharpFeaturesResources.Properties}: [goo = int])", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -313,16 +328,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidFieldReadonly()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public readonly int goo;
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public readonly int goo;
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -333,16 +349,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidFieldStatic()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public static int goo;
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public static int goo;
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -353,16 +370,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidFieldConst()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public const int goo = 42;
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public const int goo = 42;
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -378,16 +396,17 @@ class D
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545425")]
         public async Task TestAttributeWithValidProperty()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public int goo { get; set; }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public int goo { get; set; }
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"SomethingAttribute({CSharpFeaturesResources.Properties}: [goo = int])", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -399,16 +418,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidPropertyStatic()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public static int goo { get; set; }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public static int goo { get; set; }
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -419,16 +439,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidPropertyNoSetter()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public int goo { get { return 0; } }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public int goo { get { return 0; } }
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -439,16 +460,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidPropertyNoGetter()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public int goo { set { } }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public int goo { set { } }
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -459,16 +481,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidPropertyPrivateGetter()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public int goo { private get; set; }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public int goo { private get; set; }
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -479,16 +502,17 @@ class D
         [Fact]
         public async Task TestAttributeWithInvalidPropertyPrivateSetter()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    public int goo { get; private set; }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    public int goo { get; private set; }
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute()", string.Empty, null, currentParameterIndex: 0));
@@ -500,24 +524,25 @@ class D
         [WorkItem("https://github.com/dotnet/roslyn/issues/12544")]
         public async Task TestAttributeWithOverriddenProperty()
         {
-            var markup = @"
-cusing System;
+            var markup = """
+                cusing System;
 
-class BaseAttribute : Attribute
-{
-    public virtual string Name { get; set; }
-}
+                class BaseAttribute : Attribute
+                {
+                    public virtual string Name { get; set; }
+                }
 
-class DerivedAttribute : BaseAttribute
-{
-    public override string Name { get; set; }
-}
+                class DerivedAttribute : BaseAttribute
+                {
+                    public override string Name { get; set; }
+                }
 
-[[|Derived($$|])]
-class C
-{
+                [[|Derived($$|])]
+                class C
+                {
 
-}";
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"DerivedAttribute({CSharpFeaturesResources.Properties}: [Name = string])", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -533,20 +558,21 @@ class C
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545425")]
         public async Task TestAttributeWithArgumentsAndNamedParameters1()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <param name=""goo"">GooParameter</param>
-    /// <param name=""bar"">BarParameter</param>
-    public SomethingAttribute(int goo = 0, string bar = null) { }
-    public int fieldfoo { get; set; }
-    public string fieldbar { get; set; }
-}
-
-[[|Something($$|])]
-class D
-{
-}";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <param name="goo">GooParameter</param>
+                    /// <param name="bar">BarParameter</param>
+                    public SomethingAttribute(int goo = 0, string bar = null) { }
+                    public int fieldfoo { get; set; }
+                    public string fieldbar { get; set; }
+                }
+
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"SomethingAttribute([int goo = 0], [string bar = null], {CSharpFeaturesResources.Properties}: [fieldbar = string], [fieldfoo = int])", string.Empty, "GooParameter", currentParameterIndex: 0));
@@ -559,20 +585,21 @@ class D
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545425")]
         public async Task TestAttributeWithArgumentsAndNamedParameters2()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <param name=""goo"">GooParameter</param>
-    /// <param name=""bar"">BarParameter</param>
-    public SomethingAttribute(int goo = 0, string bar = null) { }
-    public int fieldfoo { get; set; }
-    public string fieldbar { get; set; }
-}
-
-[[|Something(22, $$|])]
-class D
-{
-}";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <param name="goo">GooParameter</param>
+                    /// <param name="bar">BarParameter</param>
+                    public SomethingAttribute(int goo = 0, string bar = null) { }
+                    public int fieldfoo { get; set; }
+                    public string fieldbar { get; set; }
+                }
+
+                [[|Something(22, $$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"SomethingAttribute([int goo = 0], [string bar = null], {CSharpFeaturesResources.Properties}: [fieldbar = string], [fieldfoo = int])", string.Empty, "BarParameter", currentParameterIndex: 1));
@@ -585,20 +612,21 @@ class D
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545425")]
         public async Task TestAttributeWithArgumentsAndNamedParameters3()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <param name=""goo"">GooParameter</param>
-    /// <param name=""bar"">BarParameter</param>
-    public SomethingAttribute(int goo = 0, string bar = null) { }
-    public int fieldfoo { get; set; }
-    public string fieldbar { get; set; }
-}
-
-[[|Something(22, null, $$|])]
-class D
-{
-}";
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <param name="goo">GooParameter</param>
+                    /// <param name="bar">BarParameter</param>
+                    public SomethingAttribute(int goo = 0, string bar = null) { }
+                    public int fieldfoo { get; set; }
+                    public string fieldbar { get; set; }
+                }
+
+                [[|Something(22, null, $$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"SomethingAttribute([int goo = 0], [string bar = null], {CSharpFeaturesResources.Properties}: [fieldbar = string], [fieldfoo = int])", string.Empty, string.Empty, currentParameterIndex: 2));
@@ -611,18 +639,19 @@ class D
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545425")]
         public async Task TestAttributeWithOptionalArgumentAndNamedParameterWithSameName1()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <param name=""goo"">GooParameter</param>
-    public SomethingAttribute(int goo = 0) { }
-    public int goo { get; set; }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <param name="goo">GooParameter</param>
+                    public SomethingAttribute(int goo = 0) { }
+                    public int goo { get; set; }
+                }
 
-[[|Something($$|])]
-class D
-{
-}";
+                [[|Something($$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"SomethingAttribute([int goo = 0], {CSharpFeaturesResources.Properties}: [goo = int])", string.Empty, "GooParameter", currentParameterIndex: 0));
@@ -635,18 +664,19 @@ class D
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/545425")]
         public async Task TestAttributeWithOptionalArgumentAndNamedParameterWithSameName2()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-    /// <param name=""goo"">GooParameter</param>
-    public SomethingAttribute(int goo = 0) { }
-    public int goo { get; set; }
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                    /// <param name="goo">GooParameter</param>
+                    public SomethingAttribute(int goo = 0) { }
+                    public int goo { get; set; }
+                }
 
-[[|Something(22, $$|])]
-class D
-{
-}";
+                [[|Something(22, $$|])]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"SomethingAttribute([int goo = 0], {CSharpFeaturesResources.Properties}: [goo = int])", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -662,18 +692,19 @@ class D
         [Fact]
         public async Task TestInvocationOnTriggerParens()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-class SomethingAttribute : Attribute
-{
-    public SomethingAttribute(int someParameter, bool somethingElse) { }
-}
+                class SomethingAttribute : Attribute
+                {
+                    public SomethingAttribute(int someParameter, bool somethingElse) { }
+                }
 
-[[|Something($$|])]
-class C
-{
-}";
+                [[|Something($$|])]
+                class C
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute(int someParameter, bool somethingElse)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -684,18 +715,19 @@ class C
         [Fact]
         public async Task TestInvocationOnTriggerComma()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-class SomethingAttribute : Attribute
-{
-    public SomethingAttribute(int someParameter, bool somethingElse) { }
-}
+                class SomethingAttribute : Attribute
+                {
+                    public SomethingAttribute(int someParameter, bool somethingElse) { }
+                }
 
-[[|Something(22,$$|])]
-class C
-{
-}";
+                [[|Something(22,$$|])]
+                class C
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("SomethingAttribute(int someParameter, bool somethingElse)", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -706,18 +738,19 @@ class C
         [Fact]
         public async Task TestNoInvocationOnSpace()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-class SomethingAttribute : Attribute
-{
-    public SomethingAttribute(int someParameter, bool somethingElse) { }
-}
+                class SomethingAttribute : Attribute
+                {
+                    public SomethingAttribute(int someParameter, bool somethingElse) { }
+                }
 
-[[|Something(22, $$|])]
-class C
-{
-}";
+                [[|Something(22, $$|])]
+                class C
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             await TestAsync(markup, expectedOrderedItems, usePreviousCharAsTrigger: true);
@@ -738,21 +771,22 @@ public void TestTriggerCharacters()
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Attribute_BrowsableAlways()
         {
-            var markup = @"
-[MyAttribute($$
-class Program
-{
-}";
-
-            var referencedCode = @"
-
-public class MyAttribute
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public MyAttribute(int x)
-    {
-    }
-}";
+            var markup = """
+                [MyAttribute($$
+                class Program
+                {
+                }
+                """;
+
+            var referencedCode = """
+                public class MyAttribute
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public MyAttribute(int x)
+                    {
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("MyAttribute(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -768,21 +802,22 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Attribute_BrowsableNever()
         {
-            var markup = @"
-[MyAttribute($$
-class Program
-{
-}";
-
-            var referencedCode = @"
-
-public class MyAttribute
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public MyAttribute(int x)
-    {
-    }
-}";
+            var markup = """
+                [MyAttribute($$
+                class Program
+                {
+                }
+                """;
+
+            var referencedCode = """
+                public class MyAttribute
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public MyAttribute(int x)
+                    {
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("MyAttribute(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -798,21 +833,22 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Attribute_BrowsableAdvanced()
         {
-            var markup = @"
-[MyAttribute($$
-class Program
-{
-}";
-
-            var referencedCode = @"
-
-public class MyAttribute
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-    public MyAttribute(int x)
-    {
-    }
-}";
+            var markup = """
+                [MyAttribute($$
+                class Program
+                {
+                }
+                """;
+
+            var referencedCode = """
+                public class MyAttribute
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    public MyAttribute(int x)
+                    {
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("MyAttribute(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -837,26 +873,27 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Attribute_BrowsableMixed()
         {
-            var markup = @"
-[MyAttribute($$
-class Program
-{
-}";
-
-            var referencedCode = @"
-
-public class MyAttribute
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public MyAttribute(int x)
-    {
-    }
-
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public MyAttribute(int x, int y)
-    {
-    }
-}";
+            var markup = """
+                [MyAttribute($$
+                class Program
+                {
+                }
+                """;
+
+            var referencedCode = """
+                public class MyAttribute
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public MyAttribute(int x)
+                    {
+                    }
+
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public MyAttribute(int x, int y)
+                    {
+                    }
+                }
+                """;
 
             var expectedOrderedItemsMetadataReference = new List<SignatureHelpTestItem>();
             expectedOrderedItemsMetadataReference.Add(new SignatureHelpTestItem("MyAttribute(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -878,28 +915,30 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact]
         public async Task FieldUnavailableInOneLinkedFile()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class Secret : System.Attribute
-    {
-    }
-#endif
-    [Secret($$
-    void Goo()
-    {
-    }
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class Secret : System.Attribute
+                    {
+                    }
+                #endif
+                    [Secret($$
+                    void Goo()
+                    {
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
             var expectedDescription = new SignatureHelpTestItem($"Secret()\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj2", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
         }
@@ -907,34 +946,36 @@ void Goo()
         [Fact]
         public async Task ExcludeFilesWithInactiveRegions()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO,BAR"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class Secret : System.Attribute
-    {
-    }
-#endif
-
-#if BAR
-    [Secret($$
-    void Goo()
-    {
-    }
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument"" />
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj3"" PreprocessorSymbols=""BAR"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO,BAR">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class Secret : System.Attribute
+                    {
+                    }
+                #endif
+
+                #if BAR
+                    [Secret($$
+                    void Goo()
+                    {
+                    }
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument" />
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj3" PreprocessorSymbols="BAR">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
 
             var expectedDescription = new SignatureHelpTestItem($"Secret()\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj3", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
@@ -943,8 +984,9 @@ void Goo()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1067933")]
         public async Task InvokedWithNoToken()
         {
-            var markup = @"
-// [goo($$";
+            var markup = """
+                // [goo($$
+                """;
 
             await TestAsync(markup);
         }
@@ -952,15 +994,16 @@ public async Task InvokedWithNoToken()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1081535")]
         public async Task TestInvocationWithBadParameterList()
         {
-            var markup = @"
-class SomethingAttribute : System.Attribute
-{
-}
+            var markup = """
+                class SomethingAttribute : System.Attribute
+                {
+                }
 
-[Something{$$]
-class D
-{
-}";
+                [Something{$$]
+                class D
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             await TestAsync(markup, expectedOrderedItems);
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/ConstructorInitializerSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/ConstructorInitializerSignatureHelpProviderTests.cs
index db352e79656eb..6271938dc965d 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/ConstructorInitializerSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/ConstructorInitializerSignatureHelpProviderTests.cs
@@ -26,17 +26,18 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task TestInvocationWithoutParameters()
         {
-            var markup = @"
-class BaseClass
-{
-    public BaseClass() { }
-}
-
-class Derived : BaseClass
-{
-    public Derived() [|: base($$|])
-    { }
-}";
+            var markup = """
+                class BaseClass
+                {
+                    public BaseClass() { }
+                }
+
+                class Derived : BaseClass
+                {
+                    public Derived() [|: base($$|])
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass()", string.Empty, null, currentParameterIndex: 0));
@@ -47,18 +48,19 @@ public Derived() [|: base($$|])
         [Fact]
         public async Task TestInvocationWithoutParametersMethodXmlComments()
         {
-            var markup = @"
-class BaseClass
-{
-    /// <summary>Summary for BaseClass</summary>
-    public BaseClass() { }
-}
+            var markup = """
+                class BaseClass
+                {
+                    /// <summary>Summary for BaseClass</summary>
+                    public BaseClass() { }
+                }
 
-class Derived : BaseClass
-{
-    public Derived() [|: base($$|])
-    { }
-}";
+                class Derived : BaseClass
+                {
+                    public Derived() [|: base($$|])
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass()", "Summary for BaseClass", null, currentParameterIndex: 0));
@@ -69,17 +71,18 @@ public Derived() [|: base($$|])
         [Fact]
         public async Task TestInvocationWithParametersOn1()
         {
-            var markup = @"
-class BaseClass
-{
-    public BaseClass(int a, int b) { }
-}
+            var markup = """
+                class BaseClass
+                {
+                    public BaseClass(int a, int b) { }
+                }
 
-class Derived : BaseClass
-{
-    public Derived() [|: base($$2, 3|])
-    { }
-}";
+                class Derived : BaseClass
+                {
+                    public Derived() [|: base($$2, 3|])
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass(int a, int b)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -90,20 +93,21 @@ public Derived() [|: base($$2, 3|])
         [Fact]
         public async Task TestInvocationWithParametersXmlCommentsOn1()
         {
-            var markup = @"
-class BaseClass
-{
-    /// <summary>Summary for BaseClass</summary>
-    /// <param name=""a"">Param a</param>
-    /// <param name=""b"">Param b</param>
-    public BaseClass(int a, int b) { }
-}
-
-class Derived : BaseClass
-{
-    public Derived() [|: base($$2, 3|])
-    { }
-}";
+            var markup = """
+                class BaseClass
+                {
+                    /// <summary>Summary for BaseClass</summary>
+                    /// <param name="a">Param a</param>
+                    /// <param name="b">Param b</param>
+                    public BaseClass(int a, int b) { }
+                }
+
+                class Derived : BaseClass
+                {
+                    public Derived() [|: base($$2, 3|])
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass(int a, int b)", "Summary for BaseClass", "Param a", currentParameterIndex: 0));
@@ -114,21 +118,22 @@ public Derived() [|: base($$2, 3|])
         [Fact]
         public async Task TestInvocationWithParametersOn2()
         {
-            var markup = @"
-class BaseClass
-{
-    /// <summary>Summary for BaseClass</summary>
-    /// <param name=""a"">Param a</param>
-    /// <param name=""b"">Param b</param>
-    public BaseClass(int a, int b) { }
-}
-
-
-class Derived : BaseClass
-{
-    public Derived() [|: base(2, $$3|])
-    { }
-}";
+            var markup = """
+                class BaseClass
+                {
+                    /// <summary>Summary for BaseClass</summary>
+                    /// <param name="a">Param a</param>
+                    /// <param name="b">Param b</param>
+                    public BaseClass(int a, int b) { }
+                }
+
+
+                class Derived : BaseClass
+                {
+                    public Derived() [|: base(2, $$3|])
+                    { }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass(int a, int b)", "Summary for BaseClass", "Param b", currentParameterIndex: 1));
 
@@ -138,20 +143,21 @@ public Derived() [|: base(2, $$3|])
         [Fact]
         public async Task TestInvocationWithParametersXmlComentsOn2()
         {
-            var markup = @"
-class BaseClass
-{
-    /// <summary>Summary for BaseClass</summary>
-    /// <param name=""a"">Param a</param>
-    /// <param name=""b"">Param b</param>
-    public BaseClass(int a, int b) { }
-} 
-
-class Derived : BaseClass
-{
-    public Derived() [|: base(2, $$3|])
-    { }
-}";
+            var markup = """
+                class BaseClass
+                {
+                    /// <summary>Summary for BaseClass</summary>
+                    /// <param name="a">Param a</param>
+                    /// <param name="b">Param b</param>
+                    public BaseClass(int a, int b) { }
+                } 
+
+                class Derived : BaseClass
+                {
+                    public Derived() [|: base(2, $$3|])
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass(int a, int b)", "Summary for BaseClass", "Param b", currentParameterIndex: 1));
@@ -162,12 +168,13 @@ public Derived() [|: base(2, $$3|])
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestThisInvocation()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a, int b) { }
-    public Goo() [|: this(2, $$3|]) { }
-}";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a, int b) { }
+                    public Goo() [|: this(2, $$3|]) { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -180,12 +187,13 @@ public Goo() [|: this(2, $$3|]) { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestThisInvocationWithNonEmptyArgumentList()
         {
-            var markup = @"
-class Foo
-{
-    public Foo(int a, int b) [|: this($$|]) { }
-    public Foo() { }
-}";
+            var markup = """
+                class Foo
+                {
+                    public Foo(int a, int b) [|: this($$|]) { }
+                    public Foo() { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -198,12 +206,13 @@ public Foo() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestInvocationWithoutClosingParen()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a, int b) { }
-    public Goo() [|: this(2, $$
-|]}";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a, int b) { }
+                    public Goo() [|: this(2, $$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -216,12 +225,13 @@ public Goo() [|: this(2, $$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestThisInvocationWithoutClosingParenWithNonEmptyArgumentList()
         {
-            var markup = @"
-class Foo
-{
-    public Foo() { }
-    public Foo(int a, int b)  [|: this($$
-|]}";
+            var markup = """
+                class Foo
+                {
+                    public Foo() { }
+                    public Foo(int a, int b)  [|: this($$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -234,15 +244,16 @@ public Foo(int a, int b)  [|: this($$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25830")]
         public async Task PickCorrectOverload_PickInt()
         {
-            var markup = @"
-class D
-{
-    D() [|: this(i: 1$$|]) { }
+            var markup = """
+                class D
+                {
+                    D() [|: this(i: 1$$|]) { }
 
-    D(D filtered) => throw null;
-    D(string i) => throw null;
-    D(int i) => throw null;
-}";
+                    D(D filtered) => throw null;
+                    D(string i) => throw null;
+                    D(int i) => throw null;
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("D(int i)", currentParameterIndex: 0, isSelected: true),
@@ -255,15 +266,16 @@ class D
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25830")]
         public async Task PickCorrectOverload_PickString()
         {
-            var markup = @"
-class D
-{
-    D() [|: this(i: null$$|]) { }
+            var markup = """
+                class D
+                {
+                    D() [|: this(i: null$$|]) { }
 
-    D(D filtered) => throw null;
-    D(string i) => throw null;
-    D(int i) => throw null;
-}";
+                    D(D filtered) => throw null;
+                    D(string i) => throw null;
+                    D(int i) => throw null;
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("D(int i)", currentParameterIndex: 0),
@@ -280,12 +292,13 @@ class D
         [Fact]
         public async Task TestCurrentParameterName()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a, int b) { }
-    public Goo() : this(b: 2, a: $$
-}";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a, int b) { }
+                    public Goo() : this(b: 2, a: $$
+                }
+                """;
 
             await VerifyCurrentParameterNameAsync(markup, "a");
         }
@@ -297,12 +310,13 @@ public Goo() : this(b: 2, a: $$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestInvocationOnTriggerParens()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a) { }
-    public Goo() : this($$
-}";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a) { }
+                    public Goo() : this($$
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -315,12 +329,13 @@ public Goo() : this($$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestInvocationOnTriggerParensWithNonEmptyArgumentList()
         {
-            var markup = @"
-class Foo
-{
-    public Foo(int a) : this($$
-    public Foo() { }
-}";
+            var markup = """
+                class Foo
+                {
+                    public Foo(int a) : this($$
+                    public Foo() { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -333,12 +348,13 @@ public Foo() { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestInvocationOnTriggerComma()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a, int b) { }
-    public Goo() : this(2,$$
-}";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a, int b) { }
+                    public Goo() : this(2,$$
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -351,12 +367,13 @@ public Goo() : this(2,$$
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2579")]
         public async Task TestInvocationOnTriggerCommaWithNonEmptyArgumentList()
         {
-            var markup = @"
-class Foo
-{
-    public Foo(int a, int b) : this($$
-    public Foo() { }
-}";
+            var markup = """
+                class Foo
+                {
+                    public Foo(int a, int b) : this($$
+                    public Foo() { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -369,12 +386,13 @@ public Foo() { }
         [Fact]
         public async Task TestNoInvocationOnSpace()
         {
-            var markup = @"
-class Goo
-{
-    public Goo(int a, int b) { }
-    public Goo() : this(2, $$
-}";
+            var markup = """
+                class Goo
+                {
+                    public Goo(int a, int b) { }
+                    public Goo() : this(2, $$
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             await TestAsync(markup, expectedOrderedItems, usePreviousCharAsTrigger: true);
@@ -395,19 +413,21 @@ public void TestTriggerCharacters()
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_ConstructorInitializer_BrowsableStateAlways()
         {
-            var markup = @"
-class DerivedClass : BaseClass
-{
-    public DerivedClass() : base($$
-}";
-
-            var referencedCode = @"
-public class BaseClass
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public BaseClass(int x)
-    { }
-}";
+            var markup = """
+                class DerivedClass : BaseClass
+                {
+                    public DerivedClass() : base($$
+                }
+                """;
+
+            var referencedCode = """
+                public class BaseClass
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public BaseClass(int x)
+                    { }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -422,19 +442,21 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_ConstructorInitializer_BrowsableStateNever()
         {
-            var markup = @"
-class DerivedClass : BaseClass
-{
-    public DerivedClass() : base($$
-}";
-
-            var referencedCode = @"
-public class BaseClass
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public BaseClass(int x)
-    { }
-}";
+            var markup = """
+                class DerivedClass : BaseClass
+                {
+                    public DerivedClass() : base($$
+                }
+                """;
+
+            var referencedCode = """
+                public class BaseClass
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public BaseClass(int x)
+                    { }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -449,19 +471,21 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_ConstructorInitializer_BrowsableStateAdvanced()
         {
-            var markup = @"
-class DerivedClass : BaseClass
-{
-    public DerivedClass() : base($$
-}";
-
-            var referencedCode = @"
-public class BaseClass
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-    public BaseClass(int x)
-    { }
-}";
+            var markup = """
+                class DerivedClass : BaseClass
+                {
+                    public DerivedClass() : base($$
+                }
+                """;
+
+            var referencedCode = """
+                public class BaseClass
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    public BaseClass(int x)
+                    { }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("BaseClass(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -485,23 +509,25 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_ConstructorInitializer_BrowsableStateMixed()
         {
-            var markup = @"
-class DerivedClass : BaseClass
-{
-    public DerivedClass() : base($$
-}";
-
-            var referencedCode = @"
-public class BaseClass
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public BaseClass(int x)
-    { }
-
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public BaseClass(int x, int y)
-    { }
-}";
+            var markup = """
+                class DerivedClass : BaseClass
+                {
+                    public DerivedClass() : base($$
+                }
+                """;
+
+            var referencedCode = """
+                public class BaseClass
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public BaseClass(int x)
+                    { }
+
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public BaseClass(int x, int y)
+                    { }
+                }
+                """;
             var expectedOrderedItemsMetadataReference = new List<SignatureHelpTestItem>();
             expectedOrderedItemsMetadataReference.Add(new SignatureHelpTestItem("BaseClass(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -522,31 +548,33 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact]
         public async Task FieldUnavailableInOneLinkedFile()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class Secret
-    {
-        public Secret(int secret)
-        {
-        }
-    }
-#endif
-    class SuperSecret : Secret
-    {
-        public SuperSecret(int secret) : base($$
-    }
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class Secret
+                    {
+                        public Secret(int secret)
+                        {
+                        }
+                    }
+                #endif
+                    class SuperSecret : Secret
+                    {
+                        public SuperSecret(int secret) : base($$
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
             var expectedDescription = new SignatureHelpTestItem($"Secret(int secret)\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj2", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
         }
@@ -554,37 +582,39 @@ public SuperSecret(int secret) : base($$
         [Fact]
         public async Task ExcludeFilesWithInactiveRegions()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO,BAR"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class Secret
-    {
-        public Secret(int secret)
-        {
-        }
-    }
-#endif
-
-#if BAR
-    class SuperSecret : Secret
-    {
-        public SuperSecret(int secret) : base($$
-    }
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument"" />
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj3"" PreprocessorSymbols=""BAR"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO,BAR">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class Secret
+                    {
+                        public Secret(int secret)
+                        {
+                        }
+                    }
+                #endif
+
+                #if BAR
+                    class SuperSecret : Secret
+                    {
+                        public SuperSecret(int secret) : base($$
+                    }
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument" />
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj3" PreprocessorSymbols="BAR">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
 
             var expectedDescription = new SignatureHelpTestItem($"Secret(int secret)\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj3", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
@@ -593,8 +623,9 @@ public SuperSecret(int secret) : base($$
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1067933")]
         public async Task InvokedWithNoToken()
         {
-            var markup = @"
-// goo($$";
+            var markup = """
+                // goo($$
+                """;
 
             await TestAsync(markup);
         }
@@ -602,17 +633,18 @@ public async Task InvokedWithNoToken()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1082601")]
         public async Task TestInvocationWithBadParameterList()
         {
-            var markup = @"
-class BaseClass
-{
-    public BaseClass() { }
-}
+            var markup = """
+                class BaseClass
+                {
+                    public BaseClass() { }
+                }
 
-class Derived : BaseClass
-{
-    public Derived() [|: base{$$|])
-    { }
-}";
+                class Derived : BaseClass
+                {
+                    public Derived() [|: base{$$|])
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             await TestAsync(markup, expectedOrderedItems);
@@ -621,13 +653,14 @@ public Derived() [|: base{$$|])
         [Fact]
         public async Task TypingTupleDoesNotDismiss1()
         {
-            var markup = @"
-class D { public D(object o) {} }
-class C : D
-{
-    public C() [|: base(($$)
-    |]{}
-}";
+            var markup = """
+                class D { public D(object o) {} }
+                class C : D
+                {
+                    public C() [|: base(($$)
+                    |]{}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("D(object o)", currentParameterIndex: 0));
@@ -638,12 +671,13 @@ public C() [|: base(($$)
         [Fact]
         public async Task TypingTupleDoesNotDismiss2()
         {
-            var markup = @"
-class D { public D(object o) {} }
-class C : D
-{
-    public C() [|: base((1,$$) |]{}
-}";
+            var markup = """
+                class D { public D(object o) {} }
+                class C : D
+                {
+                    public C() [|: base((1,$$) |]{}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("D(object o)", currentParameterIndex: 0));
@@ -654,13 +688,14 @@ public C() [|: base((1,$$) |]{}
         [Fact]
         public async Task TypingTupleDoesNotDismiss3()
         {
-            var markup = @"
-class D { public D(object o) {} }
-class C : D
-{
-    public C() [|: base((1, ($$)
-    |]{}
-}";
+            var markup = """
+                class D { public D(object o) {} }
+                class C : D
+                {
+                    public C() [|: base((1, ($$)
+                    |]{}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("D(object o)", currentParameterIndex: 0));
@@ -671,12 +706,13 @@ public C() [|: base((1, ($$)
         [Fact]
         public async Task TypingTupleDoesNotDismiss4()
         {
-            var markup = @"
-class D { public D(object o) {} }
-class C : D
-{
-    public C() [|: base((1, (2,$$) |]{}
-}";
+            var markup = """
+                class D { public D(object o) {} }
+                class C : D
+                {
+                    public C() [|: base((1, (2,$$) |]{}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("D(object o)", currentParameterIndex: 0));
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/ElementAccessExpressionSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/ElementAccessExpressionSignatureHelpProviderTests.cs
index e3a713b7fd0b6..d1edf8d7b1281 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/ElementAccessExpressionSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/ElementAccessExpressionSignatureHelpProviderTests.cs
@@ -26,24 +26,25 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task TestInvocationWithParametersOn1()
         {
-            var markup = @"
-class C
-{
-    public string this[int a]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[$$|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[$$|]];
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -54,18 +55,19 @@ void Goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24311")]
         public async Task TestInvocationWithParametersOn1_WithRefReturn()
         {
-            var markup = @"
-class C
-{
-    public ref int this[int a]
-    {
-        get { throw null; }
-    }
-    void Goo(C c)
-    {
-        [|c[$$]|]
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public ref int this[int a]
+                    {
+                        get { throw null; }
+                    }
+                    void Goo(C c)
+                    {
+                        [|c[$$]|]
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("ref int C[int a]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -76,18 +78,19 @@ void Goo(C c)
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/24311")]
         public async Task TestInvocationWithParametersOn1_WithRefReadonlyReturn()
         {
-            var markup = @"
-class C
-{
-    public ref readonly int this[int a]
-    {
-        get { throw null; }
-    }
-    void Goo(C c)
-    {
-        [|c[$$]|]
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public ref readonly int this[int a]
+                    {
+                        get { throw null; }
+                    }
+                    void Goo(C c)
+                    {
+                        [|c[$$]|]
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("ref readonly int C[int a]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -98,24 +101,25 @@ void Goo(C c)
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/636117")]
         public async Task TestInvocationOnExpression()
         {
-            var markup = @"
-class C
-{
-    public string this[int a]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        C[] c = new C[1];
-        c[0][$$
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        C[] c = new C[1];
+                        c[0][$$
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -126,28 +130,29 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithParametersXmlCommentsOn1()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// Summary for this.
-    /// </summary>
-    /// <param name=""a"">Param a</param>
-    public string this[int a]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[$$|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// Summary for this.
+                    /// </summary>
+                    /// <param name="a">Param a</param>
+                    public string this[int a]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[$$|]];
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a]", "Summary for this.", "Param a", currentParameterIndex: 0));
@@ -158,24 +163,25 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithParametersOn2()
         {
-            var markup = @"
-class C
-{
-    public string this[int a, bool b]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[22, $$|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a, bool b]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[22, $$|]];
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a, bool b]", string.Empty, string.Empty, currentParameterIndex: 1));
 
@@ -185,29 +191,30 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithParametersXmlComentsOn2()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// Summary for this.
-    /// </summary>
-    /// <param name=""a"">Param a</param>
-    /// <param name=""b"">Param b</param>
-    public string this[int a, bool b]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[22, $$|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// Summary for this.
+                    /// </summary>
+                    /// <param name="a">Param a</param>
+                    /// <param name="b">Param b</param>
+                    public string this[int a, bool b]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[22, $$|]];
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a, bool b]", "Summary for this.", "Param b", currentParameterIndex: 1));
@@ -219,23 +226,25 @@ void Goo()
         public async Task TestInvocationWithoutClosingBracketWithParameters()
         {
             var markup =
-@"class C
-{
-    public string this[int a]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[$$
-    |]}
-}";
+                """
+                class C
+                {
+                    public string this[int a]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[$$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -246,24 +255,25 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithoutClosingBracketWithParametersOn2()
         {
-            var markup = @"
-class C
-{
-    public string this[int a, bool b]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[22, $$
-    |]}
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a, bool b]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[22, $$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a, bool b]", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -278,24 +288,25 @@ void Goo()
         [Fact]
         public async Task TestCurrentParameterName()
         {
-            var markup = @"
-class C
-{
-    public string this[int a, bool b]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[b: false, a: $$42|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a, bool b]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[b: false, a: $$42|]];
+                    }
+                }
+                """;
 
             await VerifyCurrentParameterNameAsync(markup, "a");
         }
@@ -307,24 +318,25 @@ void Goo()
         [Fact]
         public async Task TestInvocationOnTriggerBracket()
         {
-            var markup = @"
-class C
-{
-    public string this[int a]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[$$|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[$$|]];
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -335,24 +347,25 @@ void Goo()
         [Fact]
         public async Task TestInvocationOnTriggerComma()
         {
-            var markup = @"
-class C
-{
-    public string this[int a, bool b]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[42,$$|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a, bool b]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[42,$$|]];
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a, bool b]", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -363,24 +376,25 @@ void Goo()
         [Fact]
         public async Task TestNoInvocationOnSpace()
         {
-            var markup = @"
-class C
-{
-    public string this[int a, bool b]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        var x = [|c[42, $$|]];
-    }
-}";
+            var markup = """
+                class C
+                {
+                    public string this[int a, bool b]
+                    {
+                        get { return null; }
+                        set { }
+                    }
+                }
+
+                class D
+                {
+                    void Goo()
+                    {
+                        var c = new C();
+                        var x = [|c[42, $$|]];
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             await TestAsync(markup, expectedOrderedItems, usePreviousCharAsTrigger: true);
@@ -402,25 +416,27 @@ public void TestTriggerCharacters()
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Indexer_PropertyAlways()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo()[$$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
-    public int this[int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo()[$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
+                    public int this[int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("int Goo[int x]", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -435,25 +451,27 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Indexer_PropertyNever()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo()[$$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-    public int this[int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo()[$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                    public int this[int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var expectedOrderedItemsMetadataReference = new List<SignatureHelpTestItem>();
             expectedOrderedItemsMetadataReference.Add(new SignatureHelpTestItem("int Goo[int x]", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -468,25 +486,27 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Indexer_PropertyAdvanced()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo()[$$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
-    public int this[int x]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo()[$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    public int this[int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("int Goo[int x]", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -510,31 +530,33 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Indexer_PropertyNeverOnOneOfTwoOverloads()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo()[$$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-    public int this[int x]
-    {
-        get { return 5; }
-        set { }
-    }
-
-    public int this[double d]
-    {
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo()[$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                    public int this[int x]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+
+                    public int this[double d]
+                    {
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
 
             var expectedOrderedItemsMetadataReference = new List<SignatureHelpTestItem>();
             expectedOrderedItemsMetadataReference.Add(new SignatureHelpTestItem("int Goo[double d]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -556,25 +578,27 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Indexer_GetBrowsableNeverIgnored()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo()[$$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    public int this[int x]
-    {
-        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-        get { return 5; }
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo()[$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    public int this[int x]
+                    {
+                        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                        get { return 5; }
+                        set { }
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("int Goo[int x]", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -589,25 +613,27 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Indexer_SetBrowsableNeverIgnored()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo()[$$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    public int this[int x]
-    {
-        get { return 5; }
-        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo()[$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    public int this[int x]
+                    {
+                        get { return 5; }
+                        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                        set { }
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("int Goo[int x]", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -622,26 +648,28 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Indexer_GetSetBrowsableNeverIgnored()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo()[$$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    public int this[int x]
-    {
-        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-        get { return 5; }
-        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-        set { }
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo()[$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    public int this[int x]
+                    {
+                        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                        get { return 5; }
+                        [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                        set { }
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("int Goo[int x]", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -660,42 +688,46 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/530811")]
         public async Task IndexedProperty()
         {
-            var markup = @"class Program
-{
-    void M()
-    {
-            CCC c = new CCC();
-            c.IndexProp[$$
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                            CCC c = new CCC();
+                            c.IndexProp[$$
+                    }
+                }
+                """;
 
             // Note that <COMImport> is required by compiler.  Bug 17013 tracks enabling indexed property for non-COM types.
-            var referencedCode = @"Imports System.Runtime.InteropServices
-
-<ComImport()>
-<GuidAttribute(CCC.ClassId)>
-Public Class CCC
-
-#Region ""COM GUIDs""
-    Public Const ClassId As String = ""9d965fd2-1514-44f6-accd-257ce77c46b0""
-    Public Const InterfaceId As String = ""a9415060-fdf0-47e3-bc80-9c18f7f39cf6""
-    Public Const EventsId As String = ""c6a866a5-5f97-4b53-a5df-3739dc8ff1bb""
-# End Region
-
-            ''' <summary>
-    ''' An index property from VB
-    ''' </summary>
-    ''' <param name=""p1"">p1 is an integer index</param>
-    ''' <returns>A string</returns>
-    Public Property IndexProp(ByVal p1 As Integer) As String
-        Get
-            Return Nothing
-        End Get
-        Set(ByVal value As String)
-
-        End Set
-    End Property
-End Class";
+            var referencedCode = """
+                Imports System.Runtime.InteropServices
+
+                <ComImport()>
+                <GuidAttribute(CCC.ClassId)>
+                Public Class CCC
+
+                #Region "COM GUIDs"
+                    Public Const ClassId As String = "9d965fd2-1514-44f6-accd-257ce77c46b0"
+                    Public Const InterfaceId As String = "a9415060-fdf0-47e3-bc80-9c18f7f39cf6"
+                    Public Const EventsId As String = "c6a866a5-5f97-4b53-a5df-3739dc8ff1bb"
+                # End Region
+
+                            ''' <summary>
+                    ''' An index property from VB
+                    ''' </summary>
+                    ''' <param name="p1">p1 is an integer index</param>
+                    ''' <returns>A string</returns>
+                    Public Property IndexProp(ByVal p1 As Integer) As String
+                        Get
+                            Return Nothing
+                        End Get
+                        Set(ByVal value As String)
+
+                        End Set
+                    End Property
+                End Class
+                """;
 
             var metadataItems = new List<SignatureHelpTestItem>();
             metadataItems.Add(new SignatureHelpTestItem("string CCC.IndexProp[int p1]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -716,32 +748,34 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact]
         public async Task FieldUnavailableInOneLinkedFile()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    public int this[int z]
-    {
-        get
-        {
-            return 0;
-        }
-    }
-#endif
-    void goo()
-    {
-        var x = this[$$
-    }
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    public int this[int z]
+                    {
+                        get
+                        {
+                            return 0;
+                        }
+                    }
+                #endif
+                    void goo()
+                    {
+                        var x = this[$$
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
             var expectedDescription = new SignatureHelpTestItem($"int C[int z]\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj2", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
         }
@@ -749,38 +783,40 @@ void goo()
         [Fact]
         public async Task ExcludeFilesWithInactiveRegions()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO,BAR"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    public int this[int z]
-    {
-        get
-        {
-            return 0;
-        }
-    }
-#endif
-
-#if BAR
-    void goo()
-    {
-        var x = this[$$
-    }
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument"" />
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj3"" PreprocessorSymbols=""BAR"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO,BAR">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    public int this[int z]
+                    {
+                        get
+                        {
+                            return 0;
+                        }
+                    }
+                #endif
+
+                #if BAR
+                    void goo()
+                    {
+                        var x = this[$$
+                    }
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument" />
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj3" PreprocessorSymbols="BAR">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
 
             var expectedDescription = new SignatureHelpTestItem($"int C[int z]\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj3", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
@@ -795,24 +831,25 @@ internal override Type GetSignatureHelpProviderType()
             [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/636117")]
             public async Task TestInvocation()
             {
-                var markup = @"
-class C
-{
-    public string this[int a]
-    {
-        get { return null; }
-        set { }
-    }
-}
-
-class D
-{
-    void Goo()
-    {
-        var c = new C();
-        c[$$]
-    }
-}";
+                var markup = """
+                    class C
+                    {
+                        public string this[int a]
+                        {
+                            get { return null; }
+                            set { }
+                        }
+                    }
+
+                    class D
+                    {
+                        void Goo()
+                        {
+                            var c = new C();
+                            c[$$]
+                        }
+                    }
+                    """;
 
                 var expectedOrderedItems = new List<SignatureHelpTestItem>();
                 expectedOrderedItems.Add(new SignatureHelpTestItem("string C[int a]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -823,24 +860,24 @@ void Goo()
             [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/939417")]
             public async Task ConditionalIndexer()
             {
-                var markup = @"
-public class P
-{
-    public int this[int z]
-    {
-        get
-        {
-            return 0;
-        }
-    }
- 
-    public void goo()
-    {
-        P p = null;
-        p?[$$]
-    }
-}
-";
+                var markup = """
+                    public class P
+                    {
+                        public int this[int z]
+                        {
+                            get
+                            {
+                                return 0;
+                            }
+                        }
+
+                        public void goo()
+                        {
+                            P p = null;
+                            p?[$$]
+                        }
+                    }
+                    """;
 
                 var expectedOrderedItems = new List<SignatureHelpTestItem>();
                 expectedOrderedItems.Add(new SignatureHelpTestItem("int P[int z]", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -853,49 +890,60 @@ public async Task NonIdentifierConditionalIndexer()
             {
                 var expected = new[] { new SignatureHelpTestItem("char string[int index]") };
                 await TestAsync(
-@"class C
-{
-    void M()
-    {
-        """"?[$$ }
-}", expected); // inline with a string literal
+                    """
+                    class C
+                    {
+                        void M()
+                        {
+                            ""?[$$ }
+                    }
+                    """, expected); // inline with a string literal
                 await TestAsync(
-@"class C
-{
-    void M()
-    {
-        """"?[/**/$$ }
-}", expected); // inline with a string literal and multiline comment
+                    """
+                    class C
+                    {
+                        void M()
+                        {
+                            ""?[/**/$$ }
+                    }
+                    """, expected); // inline with a string literal and multiline comment
                 await TestAsync(
-@"class C
-{
-    void M()
-    {
-        ("""")?[$$ }
-}", expected); // parenthesized expression
+                    """
+                    class C
+                    {
+                        void M()
+                        {
+                            ("")?[$$ }
+                    }
+                    """, expected); // parenthesized expression
                 await TestAsync(
-@"class C
-{
-    void M()
-    {
-        new System.String(' ', 1)?[$$ }
-}", expected); // new object expression
+                    """
+                    class C
+                    {
+                        void M()
+                        {
+                            new System.String(' ', 1)?[$$ }
+                    }
+                    """, expected); // new object expression
 
                 // more complicated parenthesized expression
                 await TestAsync(
-@"class C
-{
-    void M()
-    {
-        (null as System.Collections.Generic.List<int>)?[$$ }
-}", new[] { new SignatureHelpTestItem("int System.Collections.Generic.List<int>[int index]") });
+                    """
+                    class C
+                    {
+                        void M()
+                        {
+                            (null as System.Collections.Generic.List<int>)?[$$ }
+                    }
+                    """, new[] { new SignatureHelpTestItem("int System.Collections.Generic.List<int>[int index]") });
             }
 
             [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1067933")]
             public async Task InvokedWithNoToken()
             {
-                var markup = @"
-// goo[$$";
+                var markup = """
+                    // goo[$$
+                    """;
 
                 await TestAsync(markup);
             }
@@ -903,63 +951,63 @@ public async Task InvokedWithNoToken()
             [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/2482")]
             public async Task WhereExpressionLooksLikeArrayTypeSyntaxOfQualifiedName()
             {
-                var markup = @"
-class WithIndexer
-{
-    public int this[int index] { get { return 0; } }
-}
-
-class TestClass
-{
-    public WithIndexer Item { get; set; }
-
-    public void Method(TestClass tc)
-    {
-        // `tc.Item[]` parses as ArrayTypeSyntax with an ElementType of QualifiedNameSyntax
-        tc.Item[$$]
-    }
-}
-";
+                var markup = """
+                    class WithIndexer
+                    {
+                        public int this[int index] { get { return 0; } }
+                    }
+
+                    class TestClass
+                    {
+                        public WithIndexer Item { get; set; }
+
+                        public void Method(TestClass tc)
+                        {
+                            // `tc.Item[]` parses as ArrayTypeSyntax with an ElementType of QualifiedNameSyntax
+                            tc.Item[$$]
+                        }
+                    }
+                    """;
                 await TestAsync(markup, new[] { new SignatureHelpTestItem("int WithIndexer[int index]") }, usePreviousCharAsTrigger: true);
             }
 
             [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20507")]
             public async Task InConditionalIndexingFollowedByMemberAccess()
             {
-                var markup = @"
-class Indexable
-{
-    public Indexable this[int x] { get => null; }
-
-    Indexable Count;
-
-    static void Main(string[] args)
-    {
-        Indexable x;
-        x?[$$].Count;
-    }
-}
-";
+                var markup = """
+                    class Indexable
+                    {
+                        public Indexable this[int x] { get => null; }
+
+                        Indexable Count;
+
+                        static void Main(string[] args)
+                        {
+                            Indexable x;
+                            x?[$$].Count;
+                        }
+                    }
+                    """;
                 await TestAsync(markup, new[] { new SignatureHelpTestItem("Indexable Indexable[int x]") }, usePreviousCharAsTrigger: false);
             }
 
             [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/20507")]
             public async Task InConditionalIndexingFollowedByConditionalAccess()
             {
-                var markup = @"
-class Indexable
-{
-    public Indexable this[int x] { get => null; }
-
-    Indexable Count;
-
-    static void Main(string[] args)
-    {
-        Indexable x;
-        x?[$$].Count?.Count;
-    }
-}
-";
+                var markup = """
+                    class Indexable
+                    {
+                        public Indexable this[int x] { get => null; }
+
+                        Indexable Count;
+
+                        static void Main(string[] args)
+                        {
+                            Indexable x;
+                            x?[$$].Count?.Count;
+                        }
+                    }
+                    """;
                 await TestAsync(markup, new[] { new SignatureHelpTestItem("Indexable Indexable[int x]") }, usePreviousCharAsTrigger: false);
             }
         }
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNamePartiallyWrittenSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNamePartiallyWrittenSignatureHelpProviderTests.cs
index 06f39f4ebb17e..3db4101d8cd4a 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNamePartiallyWrittenSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNamePartiallyWrittenSignatureHelpProviderTests.cs
@@ -25,16 +25,17 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task NestedGenericUnterminated()
         {
-            var markup = @"
-class G<T> { };
-
-class C
-{
-    void Goo()
-    {
-        G<G<int>$$
-    }
-}";
+            var markup = """
+                class G<T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        G<G<int>$$
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -45,18 +46,19 @@ void Goo()
         [Fact]
         public async Task NestedGenericUnterminatedWithAmbiguousShift()
         {
-            var markup = @"
-class G<T> { };
+            var markup = """
+                class G<T> { };
 
-class C
-{
-    void Goo()
-    {
-        var x = G<G<G<int>>$$>
+                class C
+                {
+                    void Goo()
+                    {
+                        var x = G<G<G<int>>$$>
 
-        x = x;
-    }
-}";
+                        x = x;
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -67,18 +69,19 @@ void Goo()
         [Fact]
         public async Task NestedGenericUnterminatedWithAmbiguousUnsignedShift()
         {
-            var markup = @"
-class G<T> { };
+            var markup = """
+                class G<T> { };
 
-class C
-{
-    void Goo()
-    {
-        var x = G<G<G<G<int>>>$$>
+                class C
+                {
+                    void Goo()
+                    {
+                        var x = G<G<G<G<int>>>$$>
 
-        x = x;
-    }
-}";
+                        x = x;
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -89,16 +92,17 @@ void Goo()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544088")]
         public async Task DeclaringGenericTypeWith1ParameterUnterminated()
         {
-            var markup = @"
-class G<T> { };
-
-class C
-{
-    void Goo()
-    {
-        [|G<$$
-    |]}
-}";
+            var markup = """
+                class G<T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -109,20 +113,20 @@ void Goo()
         [Fact]
         public async Task CallingGenericAsyncMethod()
         {
-            var markup = @"
-using System.Threading.Tasks;
-class Program
-{
-    void Main(string[] args)
-    {
-        Goo<$$
-    }
-    Task<int> Goo<T>()
-    {
-        return Goo<T>();
-    }
-}
-";
+            var markup = """
+                using System.Threading.Tasks;
+                class Program
+                {
+                    void Main(string[] args)
+                    {
+                        Goo<$$
+                    }
+                    Task<int> Goo<T>()
+                    {
+                        return Goo<T>();
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"({CSharpFeaturesResources.awaitable}) Task<int> Program.Goo<T>()", methodDocumentation: string.Empty, string.Empty, currentParameterIndex: 0));
@@ -134,23 +138,24 @@ Task<int> Goo<T>()
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_GenericMethod_BrowsableAlways()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new C().Goo<$$
-    }
-}
-";
-
-            var referencedCode = @"
-public class C
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public void Goo<T>(T x)
-    { }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new C().Goo<$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class C
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public void Goo<T>(T x)
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<T>(T x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -166,23 +171,24 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_GenericMethod_BrowsableNever()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new C().Goo<$$
-    }
-}
-";
-
-            var referencedCode = @"
-public class C
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public void Goo<T>(T x)
-    { }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new C().Goo<$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class C
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public void Goo<T>(T x)
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<T>(T x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -198,23 +204,24 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_GenericMethod_BrowsableAdvanced()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new C().Goo<$$
-    }
-}
-";
-
-            var referencedCode = @"
-public class C
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-    public void Goo<T>(T x)
-    { }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new C().Goo<$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class C
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    public void Goo<T>(T x)
+                    { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<T>(T x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -239,27 +246,28 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_GenericMethod_BrowsableMixed()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new C().Goo<$$
-    }
-}
-";
-
-            var referencedCode = @"
-public class C
-{
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-    public void Goo<T>(T x)
-    { }
-
-    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-    public void Goo<T, U>(T x, U y)
-    { }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new C().Goo<$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class C
+                {
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                    public void Goo<T>(T x)
+                    { }
+
+                    [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                    public void Goo<T, U>(T x, U y)
+                    { }
+                }
+                """;
             var expectedOrderedItemsMetadataReference = new List<SignatureHelpTestItem>();
             expectedOrderedItemsMetadataReference.Add(new SignatureHelpTestItem("void C.Goo<T>(T x)", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -278,25 +286,26 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact]
         public async Task GenericExtensionMethod()
         {
-            var markup = @"
-interface IGoo
-{
-    void Bar<T>();
-}
-
-static class GooExtensions
-{
-    public static void Bar<T1, T2>(this IGoo goo) { }
-}
-
-class Program
-{
-    static void Main()
-    {
-        IGoo f = null;
-        f.[|Bar<$$
-    |]}
-}";
+            var markup = """
+                interface IGoo
+                {
+                    void Bar<T>();
+                }
+
+                static class GooExtensions
+                {
+                    public static void Bar<T1, T2>(this IGoo goo) { }
+                }
+
+                class Program
+                {
+                    static void Main()
+                    {
+                        IGoo f = null;
+                        f.[|Bar<$$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
@@ -311,20 +320,21 @@ static void Main()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544088")]
         public async Task InvokingGenericMethodWith1ParameterUnterminated()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// Method Goo
-    /// </summary>
-    /// <typeparam name=""T"">Method type parameter</typeparam>
-    void Goo<T>() { }
-
-    void Bar()
-    {
-        [|Goo<$$
-    |]}
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// Method Goo
+                    /// </summary>
+                    /// <typeparam name="T">Method type parameter</typeparam>
+                    void Goo<T>() { }
+
+                    void Bar()
+                    {
+                        [|Goo<$$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<T>()",
@@ -336,16 +346,17 @@ void Bar()
         [Fact]
         public async Task TestInvocationOnTriggerBracket()
         {
-            var markup = @"
-class G<S, T> { };
-
-class C
-{
-    void Goo()
-    {
-        [|G<$$
-    |]}
-}";
+            var markup = """
+                class G<S, T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -356,16 +367,17 @@ void Goo()
         [Fact]
         public async Task TestInvocationOnTriggerComma()
         {
-            var markup = @"
-class G<S, T> { };
-
-class C
-{
-    void Goo()
-    {
-        [|G<int,$$
-    |]}
-}";
+            var markup = """
+                class G<S, T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<int,$$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -376,8 +388,9 @@ void Goo()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1067933")]
         public async Task InvokedWithNoToken()
         {
-            var markup = @"
-// goo<$$";
+            var markup = """
+                // goo<$$
+                """;
 
             await TestAsync(markup);
         }
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNameSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNameSignatureHelpProviderTests.cs
index 7162dce6df4bc..b51b0340e6299 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNameSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/GenericNameSignatureHelpProviderTests.cs
@@ -29,16 +29,17 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task NestedGenericTerminated()
         {
-            var markup = @"
-class G<T> { };
-
-class C
-{
-    void Goo()
-    {
-        G<G<int>$$>
-    }
-}";
+            var markup = """
+                class G<T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        G<G<int>$$>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -49,16 +50,17 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWith1ParameterTerminated()
         {
-            var markup = @"
-class G<T> { };
+            var markup = """
+                class G<T> { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -69,16 +71,17 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWith2ParametersOn1()
         {
-            var markup = @"
-class G<S, T> { };
+            var markup = """
+                class G<S, T> { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -89,16 +92,17 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWith2ParametersOn2()
         {
-            var markup = @"
-class G<S, T> { };
+            var markup = """
+                class G<S, T> { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<int, $$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<int, $$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -109,21 +113,22 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWith2ParametersOn1XmlDoc()
         {
-            var markup = @"
-/// <summary>
-/// Summary for G
-/// </summary>
-/// <typeparam name=""S"">TypeParamS. Also see <see cref=""T""/></typeparam>
-/// <typeparam name=""T"">TypeParamT</typeparam>
-class G<S, T> { };
-
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+            var markup = """
+                /// <summary>
+                /// Summary for G
+                /// </summary>
+                /// <typeparam name="S">TypeParamS. Also see <see cref="T"/></typeparam>
+                /// <typeparam name="T">TypeParamT</typeparam>
+                class G<S, T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>",
@@ -137,21 +142,22 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWith2ParametersOn2XmlDoc()
         {
-            var markup = @"
-/// <summary>
-/// Summary for G
-/// </summary>
-/// <typeparam name=""S"">TypeParamS</typeparam>
-/// <typeparam name=""T"">TypeParamT. Also see <see cref=""S""/></typeparam>
-class G<S, T> { };
-
-class C
-{
-    void Goo()
-    {
-        [|G<int, $$|]>
-    }
-}";
+            var markup = """
+                /// <summary>
+                /// Summary for G
+                /// </summary>
+                /// <typeparam name="S">TypeParamS</typeparam>
+                /// <typeparam name="T">TypeParamT. Also see <see cref="S"/></typeparam>
+                class G<S, T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<int, $$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>", "Summary for G", "TypeParamT. Also see S", currentParameterIndex: 1));
@@ -166,17 +172,18 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsStruct()
         {
-            var markup = @"
-class G<S> where S : struct
-{ };
+            var markup = """
+                class G<S> where S : struct
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S> where S : struct", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -187,17 +194,18 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsClass()
         {
-            var markup = @"
-class G<S> where S : class
-{ };
+            var markup = """
+                class G<S> where S : class
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S> where S : class", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -208,17 +216,18 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsNew()
         {
-            var markup = @"
-class G<S> where S : new()
-{ };
+            var markup = """
+                class G<S> where S : new()
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S> where S : new()", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -229,19 +238,20 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsBase()
         {
-            var markup = @"
-class Base { }
+            var markup = """
+                class Base { }
 
-class G<S> where S : Base
-{ };
+                class G<S> where S : Base
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S> where S : Base", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -252,19 +262,20 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsBaseGenericWithGeneric()
         {
-            var markup = @"
-class Base<T> { }
+            var markup = """
+                class Base<T> { }
 
-class G<S> where S : Base<S>
-{ };
+                class G<S> where S : Base<S>
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S> where S : Base<S>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -275,19 +286,20 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsBaseGenericWithNonGeneric()
         {
-            var markup = @"
-class Base<T> { }
+            var markup = """
+                class Base<T> { }
 
-class G<S> where S : Base<int>
-{ };
+                class G<S> where S : Base<int>
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S> where S : Base<int>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -298,19 +310,20 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsBaseGenericNested()
         {
-            var markup = @"
-class Base<T> { }
+            var markup = """
+                class Base<T> { }
 
-class G<S> where S : Base<Base<int>>
-{ };
+                class G<S> where S : Base<Base<int>>
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S> where S : Base<Base<int>>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -321,17 +334,18 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsDeriveFromAnotherGenericParameter()
         {
-            var markup = @"
-class G<S, T> where S : T
-{ };
+            var markup = """
+                class G<S, T> where S : T
+                { };
 
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T> where S : T", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -342,28 +356,29 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsMixed1()
         {
-            var markup = @"
-/// <summary>
-/// Summary1
-/// </summary>
-/// <typeparam name=""S"">SummaryS</typeparam>
-/// <typeparam name=""T"">SummaryT</typeparam>
-class G<S, T>
-    where S : Base, new()
-    where T : class, S, IGoo, new()
-{ };
-
-internal interface IGoo { }
-
-internal class Base { }
-
-class C
-{
-    void Goo()
-    {
-        [|G<$$|]>
-    }
-}";
+            var markup = """
+                /// <summary>
+                /// Summary1
+                /// </summary>
+                /// <typeparam name="S">SummaryS</typeparam>
+                /// <typeparam name="T">SummaryT</typeparam>
+                class G<S, T>
+                    where S : Base, new()
+                    where T : class, S, IGoo, new()
+                { };
+
+                internal interface IGoo { }
+
+                internal class Base { }
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T> where S : Base, new()", "Summary1", "SummaryS", currentParameterIndex: 0));
@@ -374,28 +389,29 @@ void Goo()
         [Fact]
         public async Task DeclaringGenericTypeWithConstraintsMixed2()
         {
-            var markup = @"
-/// <summary>
-/// Summary1
-/// </summary>
-/// <typeparam name=""S"">SummaryS</typeparam>
-/// <typeparam name=""T"">SummaryT</typeparam>
-class G<S, T>
-    where S : Base, new()
-    where T : class, S, IGoo, new()
-{ };
-
-internal interface IGoo { }
-
-internal class Base { }
-
-class C
-{
-    void Goo()
-    {
-        [|G<bar, $$|]>
-    }
-}";
+            var markup = """
+                /// <summary>
+                /// Summary1
+                /// </summary>
+                /// <typeparam name="S">SummaryS</typeparam>
+                /// <typeparam name="T">SummaryT</typeparam>
+                class G<S, T>
+                    where S : Base, new()
+                    where T : class, S, IGoo, new()
+                { };
+
+                internal interface IGoo { }
+
+                internal class Base { }
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<bar, $$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T> where T : class, S, IGoo, new()", "Summary1", "SummaryT", currentParameterIndex: 1));
@@ -410,16 +426,17 @@ void Goo()
         [Fact]
         public async Task InvokingGenericMethodWith1ParameterTerminated()
         {
-            var markup = @"
-class C
-{
-    void Goo<T>() { }
+            var markup = """
+                class C
+                {
+                    void Goo<T>() { }
 
-    void Bar()
-    {
-        [|Goo<$$|]>
-    }
-}";
+                    void Bar()
+                    {
+                        [|Goo<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<T>()", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -430,23 +447,24 @@ void Bar()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544091")]
         public async Task InvokingGenericMethodWith2ParametersOn1()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// Method summary
-    /// </summary>
-    /// <typeparam name=""S"" > type param S. see <see cref=""T""/> </typeparam>
-    /// <typeparam name=""T"">type param T. </typeparam>
-    /// <param name=""s"">parameter s</param>
-    /// <param name=""t"">parameter t</param>
-    void Goo<S, T>(S s, T t) { }
-
-    void Bar()
-    {
-        [|Goo<$$|]>
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// Method summary
+                    /// </summary>
+                    /// <typeparam name="S" > type param S. see <see cref="T"/> </typeparam>
+                    /// <typeparam name="T">type param T. </typeparam>
+                    /// <param name="s">parameter s</param>
+                    /// <param name="t">parameter t</param>
+                    void Goo<S, T>(S s, T t) { }
+
+                    void Bar()
+                    {
+                        [|Goo<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<S, T>(S s, T t)",
@@ -458,16 +476,17 @@ void Bar()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544091")]
         public async Task InvokingGenericMethodWith2ParametersOn2()
         {
-            var markup = @"
-class C
-{
-    void Goo<S, T>(S s, T t) { }
+            var markup = """
+                class C
+                {
+                    void Goo<S, T>(S s, T t) { }
 
-    void Bar()
-    {
-        [|Goo<int, $$|]>
-    }
-}";
+                    void Bar()
+                    {
+                        [|Goo<int, $$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<S, T>(S s, T t)", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -478,21 +497,22 @@ void Bar()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544091")]
         public async Task InvokingGenericMethodWith2ParametersOn1XmlDoc()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// SummaryForGoo
-    /// </summary>
-    /// <typeparam name=""S"">SummaryForS</typeparam>
-    /// <typeparam name=""T"">SummaryForT</typeparam>
-    void Goo<S, T>(S s, T t) { }
-
-    void Bar()
-    {
-        [|Goo<$$|]>
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// SummaryForGoo
+                    /// </summary>
+                    /// <typeparam name="S">SummaryForS</typeparam>
+                    /// <typeparam name="T">SummaryForT</typeparam>
+                    void Goo<S, T>(S s, T t) { }
+
+                    void Bar()
+                    {
+                        [|Goo<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<S, T>(S s, T t)", "SummaryForGoo", "SummaryForS", currentParameterIndex: 0));
@@ -503,21 +523,22 @@ void Bar()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544091")]
         public async Task InvokingGenericMethodWith2ParametersOn2XmlDoc()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// SummaryForGoo
-    /// </summary>
-    /// <typeparam name=""S"">SummaryForS</typeparam>
-    /// <typeparam name=""T"">SummaryForT</typeparam>
-    void Goo<S, T>(S s, T t) { }
-
-    void Bar()
-    {
-        [|Goo<int, $$|]>
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// SummaryForGoo
+                    /// </summary>
+                    /// <typeparam name="S">SummaryForS</typeparam>
+                    /// <typeparam name="T">SummaryForT</typeparam>
+                    void Goo<S, T>(S s, T t) { }
+
+                    void Bar()
+                    {
+                        [|Goo<int, $$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void C.Goo<S, T>(S s, T t)", "SummaryForGoo", "SummaryForT", currentParameterIndex: 1));
@@ -528,23 +549,24 @@ void Bar()
         [Fact]
         public async Task CallingGenericExtensionMethod()
         {
-            var markup = @"
-class G
-{ };
-
-class C
-{
-    void Bar()
-    {
-        G g = null;
-        g.[|Goo<$$|]>
-    }
-}
-
-static class GooClass
-{
-    public static void Goo<T>(this G g) { }
-}";
+            var markup = """
+                class G
+                { };
+
+                class C
+                {
+                    void Bar()
+                    {
+                        G g = null;
+                        g.[|Goo<$$|]>
+                    }
+                }
+
+                static class GooClass
+                {
+                    public static void Goo<T>(this G g) { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"({CSharpFeaturesResources.extension}) void G.Goo<T>()", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -560,27 +582,28 @@ public static void Goo<T>(this G g) { }
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544091")]
         public async Task InvokingGenericMethodWithConstraintsMixed1()
         {
-            var markup = @"
-class Base { }
-interface IGoo { }
-
-class C
-{
-    /// <summary>
-    /// GooSummary
-    /// </summary>
-    /// <typeparam name=""S"">ParamS</typeparam>
-    /// <typeparam name=""T"">ParamT</typeparam>
-    S Goo<S, T>(S s, T t)
-        where S : Base, new()
-        where T : class, S, IGoo, new()
-    { return null; }
-
-    void Bar()
-    {
-        [|Goo<$$|]>
-    }
-}";
+            var markup = """
+                class Base { }
+                interface IGoo { }
+
+                class C
+                {
+                    /// <summary>
+                    /// GooSummary
+                    /// </summary>
+                    /// <typeparam name="S">ParamS</typeparam>
+                    /// <typeparam name="T">ParamT</typeparam>
+                    S Goo<S, T>(S s, T t)
+                        where S : Base, new()
+                        where T : class, S, IGoo, new()
+                    { return null; }
+
+                    void Bar()
+                    {
+                        [|Goo<$$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("S C.Goo<S, T>(S s, T t) where S : Base, new()", "GooSummary", "ParamS", currentParameterIndex: 0));
@@ -591,27 +614,28 @@ void Bar()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/544091")]
         public async Task InvokingGenericMethodWithConstraintsMixed2()
         {
-            var markup = @"
-class Base { }
-interface IGoo { }
-
-class C
-{
-    /// <summary>
-    /// GooSummary
-    /// </summary>
-    /// <typeparam name=""S"">ParamS</typeparam>
-    /// <typeparam name=""T"">ParamT</typeparam>
-    S Goo<S, T>(S s, T t)
-        where S : Base, new()
-        where T : class, S, IGoo, new()
-    { return null; }
-
-    void Bar()
-    {
-        [|Goo<Base, $$|]>
-    }
-}";
+            var markup = """
+                class Base { }
+                interface IGoo { }
+
+                class C
+                {
+                    /// <summary>
+                    /// GooSummary
+                    /// </summary>
+                    /// <typeparam name="S">ParamS</typeparam>
+                    /// <typeparam name="T">ParamT</typeparam>
+                    S Goo<S, T>(S s, T t)
+                        where S : Base, new()
+                        where T : class, S, IGoo, new()
+                    { return null; }
+
+                    void Bar()
+                    {
+                        [|Goo<Base, $$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("S C.Goo<S, T>(S s, T t) where T : class, S, IGoo, new()", "GooSummary", "ParamT", currentParameterIndex: 1));
@@ -622,23 +646,23 @@ void Bar()
         [Fact]
         public async Task TestUnmanagedConstraint()
         {
-            var markup = @"
-
-class C
-{
-    /// <summary>
-    /// summary headline
-    /// </summary>
-    /// <typeparam name=""T"">T documentation</typeparam>
-    void M<T>(T arg) where T : unmanaged
-    {
-    }
-
-    void Bar()
-    {
-        [|M<$$|]>
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// summary headline
+                    /// </summary>
+                    /// <typeparam name="T">T documentation</typeparam>
+                    void M<T>(T arg) where T : unmanaged
+                    {
+                    }
+
+                    void Bar()
+                    {
+                        [|M<$$|]>
+                    }
+                }
+                """;
 
             await TestAsync(markup, new List<SignatureHelpTestItem>
             {
@@ -662,28 +686,30 @@ public void TestTriggerCharacters()
         [Fact]
         public async Task FieldUnavailableInOneLinkedFile()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class D<T>
-    {
-    }
-#endif
-    void goo()
-    {
-        var x = new D<$$
-    }
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class D<T>
+                    {
+                    }
+                #endif
+                    void goo()
+                    {
+                        var x = new D<$$
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
             var expectedDescription = new SignatureHelpTestItem($"D<T>\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj2", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
         }
@@ -691,34 +717,36 @@ void goo()
         [Fact]
         public async Task ExcludeFilesWithInactiveRegions()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO,BAR"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class D<T>
-    {
-    }
-#endif
-
-#if BAR
-    void goo()
-    {
-        var x = new D<$$
-    }
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument"" />
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj3"" PreprocessorSymbols=""BAR"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO,BAR">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class D<T>
+                    {
+                    }
+                #endif
+
+                #if BAR
+                    void goo()
+                    {
+                        var x = new D<$$
+                    }
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument" />
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj3" PreprocessorSymbols="BAR">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
 
             var expectedDescription = new SignatureHelpTestItem($"D<T>\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj3", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
@@ -731,20 +759,22 @@ void goo()
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_GenericType_BrowsableAlways()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        var c = new C<$$
-    }
-}";
-
-            var referencedCode = @"
-[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
-public class C<T>
-{
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        var c = new C<$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Always)]
+                public class C<T>
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -760,20 +790,22 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_GenericType_BrowsableNever()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        var c = new C<$$
-    }
-}";
-
-            var referencedCode = @"
-[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
-public class C<T>
-{
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        var c = new C<$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Never)]
+                public class C<T>
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -789,20 +821,22 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_GenericType_BrowsableAdvanced()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        var c = new C<$$
-    }
-}";
-
-            var referencedCode = @"
-[System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
-public class C<T>
-{
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        var c = new C<$$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                [System.ComponentModel.EditorBrowsable(System.ComponentModel.EditorBrowsableState.Advanced)]
+                public class C<T>
+                {
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C<T>", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -828,16 +862,17 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1083601")]
         public async Task DeclaringGenericTypeWithBadTypeArgumentList()
         {
-            var markup = @"
-class G<T> { };
+            var markup = """
+                class G<T> { };
 
-class C
-{
-    void Goo()
-    {
-        G{$$>
-    }
-}";
+                class C
+                {
+                    void Goo()
+                    {
+                        G{$$>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             await TestAsync(markup, expectedOrderedItems);
@@ -846,29 +881,34 @@ void Goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/50114")]
         public async Task DeclaringGenericTypeWithDocCommentList()
         {
-            var markup = @"
-/// <summary>
-/// List:
-/// <list>
-/// <item>
-/// <description>
-/// Item 1.
-/// </description>
-/// </item>
-/// </list>
-/// </summary>
-class G<S, T> { };
-
-class C
-{
-    void Goo()
-    {
-        [|G<int, $$|]>
-    }
-}";
+            var markup = """
+                /// <summary>
+                /// List:
+                /// <list>
+                /// <item>
+                /// <description>
+                /// Item 1.
+                /// </description>
+                /// </item>
+                /// </list>
+                /// </summary>
+                class G<S, T> { };
+
+                class C
+                {
+                    void Goo()
+                    {
+                        [|G<int, $$|]>
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
-            expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>", "List:\r\n\r\nItem 1.",
+            expectedOrderedItems.Add(new SignatureHelpTestItem("G<S, T>", """
+                List:
+
+                Item 1.
+                """,
                 classificationTypeNames: ImmutableArray.Create(
                     ClassificationTypeNames.Text,
                     ClassificationTypeNames.WhiteSpace,
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/InitializerExpressionSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/InitializerExpressionSignatureHelpProviderTests.cs
index 52fe7f2e9b8cd..9537035cf899f 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/InitializerExpressionSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/InitializerExpressionSignatureHelpProviderTests.cs
@@ -24,16 +24,17 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task WithSingleParamAddMethods()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-class C
-{
-    void Goo()
-    {
-        new List<int> { { $$
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                class C
+                {
+                    void Goo()
+                    {
+                        new List<int> { { $$
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void List<int>.Add(int item)", currentParameterIndex: 0));
@@ -44,16 +45,17 @@ void Goo()
         [Fact]
         public async Task ForMultiParamAddMethods()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-class C
-{
-    void Goo()
-    {
-        new Dictionary<int, string> { { $$
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                class C
+                {
+                    void Goo()
+                    {
+                        new Dictionary<int, string> { { $$
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void Dictionary<int, string>.Add(int key, string value)", currentParameterIndex: 0));
@@ -64,16 +66,17 @@ void Goo()
         [Fact]
         public async Task ForSecondParam()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-class C
-{
-    void Goo()
-    {
-        new Dictionary<int, string> { { 0, $$
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                class C
+                {
+                    void Goo()
+                    {
+                        new Dictionary<int, string> { { 0, $$
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void Dictionary<int, string>.Add(int key, string value)", currentParameterIndex: 1));
@@ -84,21 +87,22 @@ void Goo()
         [Fact]
         public async Task ForNestedCollectionInitializer()
         {
-            var markup = @"
-using System.Collections.Generic;
-
-class Bar
-{
-    public Dictionary<int, string> D;
-}
-
-class C
-{
-    void Goo()
-    {
-        new Bar { D = { { $$
-    }
-}";
+            var markup = """
+                using System.Collections.Generic;
+
+                class Bar
+                {
+                    public Dictionary<int, string> D;
+                }
+
+                class C
+                {
+                    void Goo()
+                    {
+                        new Bar { D = { { $$
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void Dictionary<int, string>.Add(int key, string value)", currentParameterIndex: 0));
@@ -109,20 +113,20 @@ void Goo()
         [Fact]
         public async Task WithoutClosingBraces()
         {
-            var markup = @"
-using System.Collections.Generic;
+            var markup = """
+                using System.Collections.Generic;
 
-class Bar
-{
-    public Dictionary<int, string> D;
-}
+                class Bar
+                {
+                    public Dictionary<int, string> D;
+                }
 
-class C
-{
-    void Goo()
-    {
-        new Bar { D = { { $$
-";
+                class C
+                {
+                    void Goo()
+                    {
+                        new Bar { D = { { $$
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void Dictionary<int, string>.Add(int key, string value)", currentParameterIndex: 0));
@@ -133,22 +137,22 @@ void Goo()
         [Fact]
         public async Task WithMultipleAddMethods()
         {
-            var markup = @"
-using System.Collections;
-
-class Bar : IEnumerable
-{
-    public void Add(int i) { }
-    public void Add(int i, string s) { }
-    public void Add(int i, string s, bool b) { }
-}
-
-class C
-{
-    void Goo()
-    {
-        new Bar { { $$
-";
+            var markup = """
+                using System.Collections;
+
+                class Bar : IEnumerable
+                {
+                    public void Add(int i) { }
+                    public void Add(int i, string s) { }
+                    public void Add(int i, string s, bool b) { }
+                }
+
+                class C
+                {
+                    void Goo()
+                    {
+                        new Bar { { $$
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("void Bar.Add(int i)", currentParameterIndex: 0));
@@ -161,22 +165,22 @@ void Goo()
         [Fact]
         public async Task DoesNotImplementIEnumerable()
         {
-            var markup = @"
-using System.Collections;
-
-class Bar
-{
-    public void Add(int i) { }
-    public void Add(int i, string s) { }
-    public void Add(int i, string s, bool b) { }
-}
-
-class C
-{
-    void Goo()
-    {
-        new Bar { { $$
-";
+            var markup = """
+                using System.Collections;
+
+                class Bar
+                {
+                    public void Add(int i) { }
+                    public void Add(int i, string s) { }
+                    public void Add(int i, string s, bool b) { }
+                }
+
+                class C
+                {
+                    void Goo()
+                    {
+                        new Bar { { $$
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
 
@@ -186,26 +190,26 @@ void Goo()
         [Fact]
         public async Task WithExtensionAddMethods()
         {
-            var markup = @"
-using System.Collections;
-
-class Bar : IEnumerable
-{
-}
-
-static class Extensions
-{
-    public static void Add(this Bar b, int i) { }
-    public static void Add(this Bar b, int i, string s) { }
-    public static void Add(this Bar b, int i, string s, bool b) { }
-}
-
-class C
-{
-    void Goo()
-    {
-        new Bar { { $$
-";
+            var markup = """
+                using System.Collections;
+
+                class Bar : IEnumerable
+                {
+                }
+
+                static class Extensions
+                {
+                    public static void Add(this Bar b, int i) { }
+                    public static void Add(this Bar b, int i, string s) { }
+                    public static void Add(this Bar b, int i, string s, bool b) { }
+                }
+
+                class C
+                {
+                    void Goo()
+                    {
+                        new Bar { { $$
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem($"({CSharpFeaturesResources.extension}) void Bar.Add(int i)", currentParameterIndex: 0));
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/ObjectCreationExpressionSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/ObjectCreationExpressionSignatureHelpProviderTests.cs
index f36c9afba060f..01c9db5945ba2 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/ObjectCreationExpressionSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/ObjectCreationExpressionSignatureHelpProviderTests.cs
@@ -26,14 +26,15 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task TestInvocationWithoutParameters()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        var c = [|new C($$|]);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        var c = [|new C($$|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C()", string.Empty, null, currentParameterIndex: 0));
@@ -44,20 +45,21 @@ void goo()
         [Fact]
         public async Task TestImplicitInvocationWithoutParameters()
         {
-            var markup = @"
-<Workspace>
-    <Project Language=""C#"" LanguageVersion=""Preview"" CommonReferences=""true"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-    void M()
-    {
-        C c = [|new($$|]);
-    }
-}
-        </Document>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" LanguageVersion="Preview" CommonReferences="true">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                    void M()
+                    {
+                        C c = [|new($$|]);
+                    }
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C()", string.Empty, null, currentParameterIndex: 0));
@@ -68,19 +70,20 @@ void M()
         [Fact]
         public async Task TestInvocationWithoutParametersMethodXmlComments()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// Summary for C
-    /// </summary>
-    C() { }
-
-    void Goo()
-    {
-        C c = [|new C($$|]);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// Summary for C
+                    /// </summary>
+                    C() { }
+
+                    void Goo()
+                    {
+                        C c = [|new C($$|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C()", "Summary for C", null, currentParameterIndex: 0));
@@ -90,16 +93,17 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithParametersOn1()
         {
-            var markup = @"
-class C
-{
-    C(int a, int b) { }
+            var markup = """
+                class C
+                {
+                    C(int a, int b) { }
 
-    void Goo()
-    {
-        C c = [|new C($$2, 3|]);
-    }
-}";
+                    void Goo()
+                    {
+                        C c = [|new C($$2, 3|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, int b)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -110,16 +114,17 @@ void Goo()
         [Fact]
         public async Task TestImplicitInvocationWithParametersOn1()
         {
-            var markup = @"
-class C
-{
-    C(int a, int b) { }
+            var markup = """
+                class C
+                {
+                    C(int a, int b) { }
 
-    void M()
-    {
-        C c = [|new($$2, 3|]);
-    }
-}";
+                    void M()
+                    {
+                        C c = [|new($$2, 3|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, int b)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -130,21 +135,22 @@ void M()
         [Fact]
         public async Task TestInvocationWithParametersXmlCommentsOn1()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// Summary for C
-    /// </summary>
-    /// <param name=""a"">Param a</param>
-    /// <param name=""b"">Param b</param>
-    C(int a, int b) { }
-
-    void Goo()
-    {
-        C c = [|new C($$2, 3|]);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// Summary for C
+                    /// </summary>
+                    /// <param name="a">Param a</param>
+                    /// <param name="b">Param b</param>
+                    C(int a, int b) { }
+
+                    void Goo()
+                    {
+                        C c = [|new C($$2, 3|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, int b)", "Summary for C", "Param a", currentParameterIndex: 0));
@@ -155,16 +161,17 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithParametersOn2()
         {
-            var markup = @"
-class C
-{
-    C(int a, int b) { }
-
-    void Goo()
-    {
-        C c = [|new C(2, $$3|]);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    C(int a, int b) { }
+
+                    void Goo()
+                    {
+                        C c = [|new C(2, $$3|]);
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, int b)", string.Empty, string.Empty, currentParameterIndex: 1));
 
@@ -174,21 +181,22 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithParametersXmlComentsOn2()
         {
-            var markup = @"
-class C
-{
-    /// <summary>
-    /// Summary for C
-    /// </summary>
-    /// <param name=""a"">Param a</param>
-    /// <param name=""b"">Param b</param>
-    C(int a, int b) { }
-
-    void Goo()
-    {
-        C c = [|new C(2, $$3|]);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    /// <summary>
+                    /// Summary for C
+                    /// </summary>
+                    /// <param name="a">Param a</param>
+                    /// <param name="b">Param b</param>
+                    C(int a, int b) { }
+
+                    void Goo()
+                    {
+                        C c = [|new C(2, $$3|]);
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, int b)", "Summary for C", "Param b", currentParameterIndex: 1));
 
@@ -198,17 +206,18 @@ void Goo()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25830")]
         public async Task PickCorrectOverload_PickFirst()
         {
-            var markup = @"
-class D
-{
-    void M()
-    {
-        [|new D(i: 1$$|]);
-    }
-    D(D filtered) => throw null;
-    D(string i) => throw null;
-    D(int i) => throw null;
-}";
+            var markup = """
+                class D
+                {
+                    void M()
+                    {
+                        [|new D(i: 1$$|]);
+                    }
+                    D(D filtered) => throw null;
+                    D(string i) => throw null;
+                    D(int i) => throw null;
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("D(int i)", currentParameterIndex: 0, isSelected: true),
@@ -221,17 +230,18 @@ void M()
         [Fact]
         public async Task PickCorrectOverload_PickFirst_ImplicitObjectCreation()
         {
-            var markup = @"
-class D
-{
-    void M()
-    {
-        D d = [|new(i: 1$$|]);
-    }
-    D(D filtered) => throw null;
-    D(string i) => throw null;
-    D(int i) => throw null;
-}";
+            var markup = """
+                class D
+                {
+                    void M()
+                    {
+                        D d = [|new(i: 1$$|]);
+                    }
+                    D(D filtered) => throw null;
+                    D(string i) => throw null;
+                    D(int i) => throw null;
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("D(int i)", currentParameterIndex: 0, isSelected: true),
@@ -244,17 +254,18 @@ void M()
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/25830")]
         public async Task PickCorrectOverload_PickSecond()
         {
-            var markup = @"
-class D
-{
-    void M()
-    {
-        [|new D(i: null$$|]);
-    }
-    D(D filtered) => throw null;
-    D(string i) => throw null;
-    D(int i) => throw null;
-}";
+            var markup = """
+                class D
+                {
+                    void M()
+                    {
+                        [|new D(i: null$$|]);
+                    }
+                    D(D filtered) => throw null;
+                    D(string i) => throw null;
+                    D(int i) => throw null;
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("D(int i)", currentParameterIndex: 0),
@@ -267,17 +278,18 @@ void M()
         [Fact]
         public async Task PickCorrectOverload_PickSecond_ImplicitObjectCreation()
         {
-            var markup = @"
-class D
-{
-    void M()
-    {
-        D d = [|new(i: null$$|]);
-    }
-    D(D filtered) => throw null;
-    D(string i) => throw null;
-    D(int i) => throw null;
-}";
+            var markup = """
+                class D
+                {
+                    void M()
+                    {
+                        D d = [|new(i: null$$|]);
+                    }
+                    D(D filtered) => throw null;
+                    D(string i) => throw null;
+                    D(int i) => throw null;
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
                 new SignatureHelpTestItem("D(int i)", currentParameterIndex: 0),
@@ -290,14 +302,15 @@ void M()
         [Fact]
         public async Task TestInvocationWithoutClosingParen()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        var c = [|new C($$
-    |]}
-}";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        var c = [|new C($$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C()", string.Empty, null, currentParameterIndex: 0));
@@ -308,16 +321,17 @@ void goo()
         [Fact]
         public async Task TestInvocationWithoutClosingParenWithParameters()
         {
-            var markup = @"
-class C
-{
-    C(int a, int b) { }
+            var markup = """
+                class C
+                {
+                    C(int a, int b) { }
 
-    void Goo()
-    {
-        C c = [|new C($$2, 3
-    |]}
-}";
+                    void Goo()
+                    {
+                        C c = [|new C($$2, 3
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, int b)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -328,16 +342,17 @@ void Goo()
         [Fact]
         public async Task TestInvocationWithoutClosingParenWithParametersOn2()
         {
-            var markup = @"
-class C
-{
-    C(int a, int b) { }
+            var markup = """
+                class C
+                {
+                    C(int a, int b) { }
 
-    void Goo()
-    {
-        C c = [|new C(2, $$3
-    |]}
-}";
+                    void Goo()
+                    {
+                        C c = [|new C(2, $$3
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, int b)", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -348,16 +363,17 @@ void Goo()
         [Fact]
         public async Task TestInvocationOnLambda()
         {
-            var markup = @"
-using System;
+            var markup = """
+                using System;
 
-class C
-{
-    void goo()
-    {
-        var bar = [|new Action<int, int>($$
-    |]}
-}";
+                class C
+                {
+                    void goo()
+                    {
+                        var bar = [|new Action<int, int>($$
+                    |]}
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Action<int, int>(void (int, int) target)", string.Empty, string.Empty, currentParameterIndex: 0, isSelected: true));
@@ -372,18 +388,19 @@ void goo()
         [Fact]
         public async Task TestCurrentParameterName()
         {
-            var markup = @"
-class C
-{
-    C(int a, string b)
-    {
-    }
+            var markup = """
+                class C
+                {
+                    C(int a, string b)
+                    {
+                    }
 
-    void goo()
-    {
-        var c = [|new C(b: string.Empty, $$a: 2|]);
-    }
-}";
+                    void goo()
+                    {
+                        var c = [|new C(b: string.Empty, $$a: 2|]);
+                    }
+                }
+                """;
 
             await VerifyCurrentParameterNameAsync(markup, "a");
         }
@@ -395,14 +412,15 @@ void goo()
         [Fact]
         public async Task TestInvocationOnTriggerParens()
         {
-            var markup = @"
-class C
-{
-    void goo()
-    {
-        var c = [|new C($$|]);
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void goo()
+                    {
+                        var c = [|new C($$|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C()", string.Empty, null, currentParameterIndex: 0));
@@ -413,18 +431,19 @@ void goo()
         [Fact]
         public async Task TestInvocationOnTriggerComma()
         {
-            var markup = @"
-class C
-{
-    C(int a, string b)
-    {
-    }
+            var markup = """
+                class C
+                {
+                    C(int a, string b)
+                    {
+                    }
 
-    void goo()
-    {
-        var c = [|new C(2,$$string.Empty|]);
-    }
-}";
+                    void goo()
+                    {
+                        var c = [|new C(2,$$string.Empty|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(int a, string b)", string.Empty, string.Empty, currentParameterIndex: 1));
@@ -435,18 +454,19 @@ void goo()
         [Fact]
         public async Task TestNoInvocationOnSpace()
         {
-            var markup = @"
-class C
-{
-    C(int a, string b)
-    {
-    }
+            var markup = """
+                class C
+                {
+                    C(int a, string b)
+                    {
+                    }
 
-    void goo()
-    {
-        var c = [|new C(2, $$string.Empty|]);
-    }
-}";
+                    void goo()
+                    {
+                        var c = [|new C(2, $$string.Empty|]);
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             await TestAsync(markup, expectedOrderedItems, usePreviousCharAsTrigger: true);
@@ -467,23 +487,25 @@ public void TestTriggerCharacters()
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Constructor_BrowsableAlways()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo($$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
-    public Goo(int x)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo($$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
+                    public Goo(int x)
+                    {
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Goo(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -499,23 +521,25 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Constructor_BrowsableNever()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo($$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-    public Goo(int x)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo($$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                    public Goo(int x)
+                    {
+                    }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Goo(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
@@ -531,23 +555,25 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Constructor_BrowsableAdvanced()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo($$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
-    public Goo()
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo($$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Advanced)]
+                    public Goo()
+                    {
+                    }
+                }
+                """;
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Goo()", string.Empty, null, currentParameterIndex: 0));
 
@@ -571,27 +597,29 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact, WorkItem(7336, "DevDiv_Projects/Roslyn")]
         public async Task EditorBrowsable_Constructor_BrowsableMixed()
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        new Goo($$
-    }
-}";
-
-            var referencedCode = @"
-public class Goo
-{
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
-    public Goo(int x)
-    {
-    }
-    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
-    public Goo(long y)
-    {
-    }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        new Goo($$
+                    }
+                }
+                """;
+
+            var referencedCode = """
+                public class Goo
+                {
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Always)]
+                    public Goo(int x)
+                    {
+                    }
+                    [System.ComponentModel.EditorBrowsableAttribute(System.ComponentModel.EditorBrowsableState.Never)]
+                    public Goo(long y)
+                    {
+                    }
+                }
+                """;
             var expectedOrderedItemsMetadataReference = new List<SignatureHelpTestItem>();
             expectedOrderedItemsMetadataReference.Add(new SignatureHelpTestItem("Goo(int x)", string.Empty, string.Empty, currentParameterIndex: 0));
 
@@ -612,28 +640,30 @@ await TestSignatureHelpInEditorBrowsableContextsAsync(markup: markup,
         [Fact]
         public async Task FieldUnavailableInOneLinkedFile()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class D
-    {
-    }
-#endif
-    void goo()
-    {
-        var x = new D($$
-    }
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class D
+                    {
+                    }
+                #endif
+                    void goo()
+                    {
+                        var x = new D($$
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
             var expectedDescription = new SignatureHelpTestItem($"D()\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj2", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
         }
@@ -641,34 +671,36 @@ void goo()
         [Fact]
         public async Task ExcludeFilesWithInactiveRegions()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO,BAR"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    class D
-    {
-    }
-#endif
-
-#if BAR
-    void goo()
-    {
-        var x = new D($$
-    }
-#endif
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument"" />
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj3"" PreprocessorSymbols=""BAR"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO,BAR">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    class D
+                    {
+                    }
+                #endif
+
+                #if BAR
+                    void goo()
+                    {
+                        var x = new D($$
+                    }
+                #endif
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument" />
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj3" PreprocessorSymbols="BAR">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
 
             var expectedDescription = new SignatureHelpTestItem($"D()\r\n\r\n{string.Format(FeaturesResources._0_1, "Proj1", FeaturesResources.Available)}\r\n{string.Format(FeaturesResources._0_1, "Proj3", FeaturesResources.Not_Available)}\r\n\r\n{FeaturesResources.You_can_use_the_navigation_bar_to_switch_contexts}", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
@@ -677,8 +709,9 @@ void goo()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1067933")]
         public async Task InvokedWithNoToken()
         {
-            var markup = @"
-// new goo($$";
+            var markup = """
+                // new goo($$
+                """;
 
             await TestAsync(markup);
         }
@@ -686,14 +719,15 @@ public async Task InvokedWithNoToken()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/1078993")]
         public async Task TestSigHelpInIncorrectObjectCreationExpression()
         {
-            var markup = @"
-class C
-{
-    void goo(C c)
-    {
-        goo([|new C{$$|]
-    }
-}";
+            var markup = """
+                class C
+                {
+                    void goo(C c)
+                    {
+                        goo([|new C{$$|]
+                    }
+                }
+                """;
 
             await TestAsync(markup);
         }
@@ -701,16 +735,17 @@ void goo(C c)
         [Fact]
         public async Task TypingTupleDoesNotDismiss1()
         {
-            var markup = @"
-class C
-{
-    public C(object o) { }
-    public C M()
-    {
-        return [|new C(($$)
-    |]}
+            var markup = """
+                class C
+                {
+                    public C(object o) { }
+                    public C M()
+                    {
+                        return [|new C(($$)
+                    |]}
 
-}";
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(object o)", currentParameterIndex: 0));
@@ -721,16 +756,17 @@ public C M()
         [Fact]
         public async Task TypingTupleDoesNotDismiss2()
         {
-            var markup = @"
-class C
-{
-    public C(object o) { }
-    public C M()
-    {
-        return [|new C((1,$$)
-    |]}
+            var markup = """
+                class C
+                {
+                    public C(object o) { }
+                    public C M()
+                    {
+                        return [|new C((1,$$)
+                    |]}
 
-}";
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(object o)", currentParameterIndex: 0));
@@ -741,16 +777,17 @@ public C M()
         [Fact]
         public async Task TypingTupleDoesNotDismiss3()
         {
-            var markup = @"
-class C
-{
-    public C(object o) { }
-    public C M()
-    {
-        return [|new C((1, ($$)
-    |]}
+            var markup = """
+                class C
+                {
+                    public C(object o) { }
+                    public C M()
+                    {
+                        return [|new C((1, ($$)
+                    |]}
 
-}";
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(object o)", currentParameterIndex: 0));
@@ -761,16 +798,17 @@ public C M()
         [Fact]
         public async Task TypingTupleDoesNotDismiss4()
         {
-            var markup = @"
-class C
-{
-    public C(object o) { }
-    public C M()
-    {
-        return [|new C((1, (2,$$)
-    |]}
+            var markup = """
+                class C
+                {
+                    public C(object o) { }
+                    public C M()
+                    {
+                        return [|new C((1, (2,$$)
+                    |]}
 
-}";
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("C(object o)", currentParameterIndex: 0));
@@ -795,16 +833,17 @@ public C M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/6713")]
         public async Task PickCorrectOverload_Incomplete(string arguments, int expectedParameterIndex, int expecteSelectedIndex)
         {
-            var markup = @"
-class Program
-{
-    static void M()
-    {
-        [|new Program(ARGUMENTS|]);
-    }
-    Program(int i, string s) { }
-    Program(string s, string s2) { }
-}";
+            var markup = """
+                class Program
+                {
+                    static void M()
+                    {
+                        [|new Program(ARGUMENTS|]);
+                    }
+                    Program(int i, string s) { }
+                    Program(string s, string s2) { }
+                }
+                """;
 
             var index = 0;
             var expectedOrderedItems = new List<SignatureHelpTestItem>
@@ -824,16 +863,17 @@ static void M()
         [WorkItem("https://github.com/dotnet/roslyn/issues/6713")]
         public async Task PickCorrectOverload_Incomplete_WithNames(string arguments, int expectedParameterIndex)
         {
-            var markup = @"
-class Program
-{
-    void M()
-    {
-        [|new Program(ARGUMENTS|]);
-    }
-    Program(int i, string s) { }
-    Program(string s, string s2) { }
-}";
+            var markup = """
+                class Program
+                {
+                    void M()
+                    {
+                        [|new Program(ARGUMENTS|]);
+                    }
+                    Program(int i, string s) { }
+                    Program(string s, string s2) { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>
             {
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/PrimaryConstructorBaseTypeSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/PrimaryConstructorBaseTypeSignatureHelpProviderTests.cs
index b2eba9003a31f..a3a55e73d1290 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/PrimaryConstructorBaseTypeSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/PrimaryConstructorBaseTypeSignatureHelpProviderTests.cs
@@ -23,13 +23,13 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task PrimaryConstructorBaseType_FirstParameter()
         {
-            var markup = @"
-record Base(int Identifier)
-{
-    private Base(string ignored) : this(1, 2) { }
-}
-record Derived(int Other) : [|Base($$1|]);
-";
+            var markup = """
+                record Base(int Identifier)
+                {
+                    private Base(string ignored) : this(1, 2) { }
+                }
+                record Derived(int Other) : [|Base($$1|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(Base original)", string.Empty, null, currentParameterIndex: 0));
@@ -41,13 +41,13 @@ record Derived(int Other) : [|Base($$1|]);
         [Fact]
         public async Task PrimaryConstructorClassBaseType_FirstParameter()
         {
-            var markup = @"
-class Base(int Identifier)
-{
-    private Base(string ignored) : this(1, 2) { }
-}
-class Derived(int Other) : [|Base($$1|]);
-";
+            var markup = """
+                class Base(int Identifier)
+                {
+                    private Base(string ignored) : this(1, 2) { }
+                }
+                class Derived(int Other) : [|Base($$1|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(int Identifier)", string.Empty, null, currentParameterIndex: 0, isSelected: true));
@@ -58,13 +58,13 @@ class Derived(int Other) : [|Base($$1|]);
         [Fact]
         public async Task PrimaryConstructorBaseType_SecondParameter()
         {
-            var markup = @"
-record Base(int Identifier1, int Identifier2)
-{
-    protected Base(string name) : this(1, 2) { }
-}
-record Derived(int Other) : [|Base(1, $$2|]);
-";
+            var markup = """
+                record Base(int Identifier1, int Identifier2)
+                {
+                    protected Base(string name) : this(1, 2) { }
+                }
+                record Derived(int Other) : [|Base(1, $$2|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(Base original)", string.Empty, null, currentParameterIndex: 1));
@@ -77,13 +77,13 @@ record Derived(int Other) : [|Base(1, $$2|]);
         [Fact]
         public async Task PrimaryConstructorClassBaseType_SecondParameter()
         {
-            var markup = @"
-class Base(int Identifier1, int Identifier2)
-{
-    protected Base(string name) : this(1, 2) { }
-}
-class Derived(int Other) : [|Base(1, $$2|]);
-";
+            var markup = """
+                class Base(int Identifier1, int Identifier2)
+                {
+                    protected Base(string name) : this(1, 2) { }
+                }
+                class Derived(int Other) : [|Base(1, $$2|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(string name)", string.Empty, null, currentParameterIndex: 1));
@@ -95,14 +95,14 @@ class Derived(int Other) : [|Base(1, $$2|]);
         [Fact]
         public async Task CommentOnBaseConstructor()
         {
-            var markup = @"
-record Base(int Identifier1, int Identifier2)
-{
-    /// <summary>Summary for constructor</summary>
-    protected Base(string name) : this(1, 2) { }
-}
-record Derived(int Other) : [|Base(1, $$2|]);
-";
+            var markup = """
+                record Base(int Identifier1, int Identifier2)
+                {
+                    /// <summary>Summary for constructor</summary>
+                    protected Base(string name) : this(1, 2) { }
+                }
+                record Derived(int Other) : [|Base(1, $$2|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(Base original)", string.Empty, null, currentParameterIndex: 1));
@@ -115,14 +115,14 @@ record Derived(int Other) : [|Base(1, $$2|]);
         [Fact]
         public async Task CommentOnClassBaseConstructor()
         {
-            var markup = @"
-class Base(int Identifier1, int Identifier2)
-{
-    /// <summary>Summary for constructor</summary>
-    protected Base(string name) : this(1, 2) { }
-}
-class Derived(int Other) : [|Base(1, $$2|]);
-";
+            var markup = """
+                class Base(int Identifier1, int Identifier2)
+                {
+                    /// <summary>Summary for constructor</summary>
+                    protected Base(string name) : this(1, 2) { }
+                }
+                class Derived(int Other) : [|Base(1, $$2|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(string name)", "Summary for constructor", null, currentParameterIndex: 1));
@@ -134,15 +134,15 @@ class Derived(int Other) : [|Base(1, $$2|]);
         [Fact]
         public async Task CommentOnBaseConstructorAndParameters()
         {
-            var markup = @"
-record Base(int Identifier1, int Identifier2)
-{
-    /// <summary>Summary for constructor</summary>
-    /// <param name=""name"">Param name</param>
-    protected Base(string name) : this(1, 2) { }
-}
-record Derived(int Other) : [|Base($$1, 2|]);
-";
+            var markup = """
+                record Base(int Identifier1, int Identifier2)
+                {
+                    /// <summary>Summary for constructor</summary>
+                    /// <param name="name">Param name</param>
+                    protected Base(string name) : this(1, 2) { }
+                }
+                record Derived(int Other) : [|Base($$1, 2|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(Base original)", string.Empty, null, currentParameterIndex: 0));
@@ -155,15 +155,15 @@ record Derived(int Other) : [|Base($$1, 2|]);
         [Fact]
         public async Task CommentOnClassBaseConstructorAndParameters()
         {
-            var markup = @"
-class Base(int Identifier1, int Identifier2)
-{
-    /// <summary>Summary for constructor</summary>
-    /// <param name=""name"">Param name</param>
-    protected Base(string name) : this(1, 2) { }
-}
-class Derived(int Other) : [|Base($$1, 2|]);
-";
+            var markup = """
+                class Base(int Identifier1, int Identifier2)
+                {
+                    /// <summary>Summary for constructor</summary>
+                    /// <param name="name">Param name</param>
+                    protected Base(string name) : this(1, 2) { }
+                }
+                class Derived(int Other) : [|Base($$1, 2|]);
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("Base(string name)", "Summary for constructor", "Param name", currentParameterIndex: 0));
diff --git a/src/EditorFeatures/CSharpTest/SignatureHelp/TupleConstructionSignatureHelpProviderTests.cs b/src/EditorFeatures/CSharpTest/SignatureHelp/TupleConstructionSignatureHelpProviderTests.cs
index 6e3ba0cdd6c21..283aef8565874 100644
--- a/src/EditorFeatures/CSharpTest/SignatureHelp/TupleConstructionSignatureHelpProviderTests.cs
+++ b/src/EditorFeatures/CSharpTest/SignatureHelp/TupleConstructionSignatureHelpProviderTests.cs
@@ -24,11 +24,12 @@ internal override Type GetSignatureHelpProviderType()
         [Fact]
         public async Task InvocationAfterOpenParen()
         {
-            var markup = @"
-class C
-{
-    (int, int) y = [|($$
-|]}";
+            var markup = """
+                class C
+                {
+                    (int, int) y = [|($$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, int)", currentParameterIndex: 0, parameterDocumentation: ""));
@@ -39,11 +40,12 @@ class C
         [Fact]
         public async Task InvocationWithNullableReferenceTypes()
         {
-            var markup = @"
-class C
-{
-    (string?, string) y = [|($$
-|]}";
+            var markup = """
+                class C
+                {
+                    (string?, string) y = [|($$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(string?, string)", currentParameterIndex: 0));
@@ -54,14 +56,15 @@ class C
         [Fact, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems/edit/655607")]
         public async Task TestMissingTupleElement()
         {
-            var markup = @"
-class C
-{
-    void M()
-    {
-        (a, ) = [|($$
-|]  }
-}";
+            var markup = """
+                class C
+                {
+                    void M()
+                    {
+                        (a, ) = [|($$
+                |]  }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(object a, object)", currentParameterIndex: 0));
@@ -72,11 +75,12 @@ void M()
         [Fact]
         public async Task InvocationAfterOpenParen2()
         {
-            var markup = @"
-class C
-{
-    (int, int) y = [|($$)|]
-}";
+            var markup = """
+                class C
+                {
+                    (int, int) y = [|($$)|]
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, int)", currentParameterIndex: 0));
@@ -87,11 +91,12 @@ class C
         [Fact]
         public async Task InvocationAfterComma1()
         {
-            var markup = @"
-class C
-{
-    (int, int) y = [|(1,$$
-|]}";
+            var markup = """
+                class C
+                {
+                    (int, int) y = [|(1,$$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, int)", currentParameterIndex: 1, parameterDocumentation: ""));
@@ -102,11 +107,12 @@ class C
         [Fact]
         public async Task InvocationAfterComma2()
         {
-            var markup = @"
-class C
-{
-    (int, int) y = [|(1,$$)|]
-}";
+            var markup = """
+                class C
+                {
+                    (int, int) y = [|(1,$$)|]
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, int)", currentParameterIndex: 1));
@@ -117,11 +123,12 @@ class C
         [Fact]
         public async Task ParameterIndexWithNameTyped()
         {
-            var markup = @"
-class C
-{
-    (int a, int b) y = [|(b: $$
-|]}";
+            var markup = """
+                class C
+                {
+                    (int a, int b) y = [|(b: $$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
 
@@ -136,11 +143,12 @@ class C
         [Fact(Skip = "https://github.com/dotnet/roslyn/issues/14277")]
         public async Task NestedTuple()
         {
-            var markup = @"
-class C
-{
-    (int a, (int b, int c)) y = [|(1, ($$
-|]}";
+            var markup = """
+                class C
+                {
+                    (int a, (int b, int c)) y = [|(1, ($$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int b, int c)", currentParameterIndex: 0));
@@ -151,11 +159,12 @@ class C
         [Fact]
         public async Task NestedTupleWhenNotInferred()
         {
-            var markup = @"
-class C
-{
-    (int, object) y = [|(1, ($$
-|]}";
+            var markup = """
+                class C
+                {
+                    (int, object) y = [|(1, ($$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, object)", currentParameterIndex: 1));
@@ -166,11 +175,12 @@ class C
         [Fact]
         public async Task NestedTupleWhenNotInferred2()
         {
-            var markup = @"
-class C
-{
-    (int, object) y = [|(1, (2,$$
-|]}";
+            var markup = """
+                class C
+                {
+                    (int, object) y = [|(1, (2,$$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, object)", currentParameterIndex: 1));
@@ -181,11 +191,12 @@ class C
         [Fact]
         public async Task NestedTupleWhenNotInferred3()
         {
-            var markup = @"
-class C
-{
-    (int, object) y = [|(1, ($$
-|]}";
+            var markup = """
+                class C
+                {
+                    (int, object) y = [|(1, ($$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, object)", currentParameterIndex: 1));
@@ -196,11 +207,12 @@ class C
         [Fact]
         public async Task NestedTupleWhenNotInferred4()
         {
-            var markup = @"
-class C
-{
-    (object, object) y = [|(($$
-|]}";
+            var markup = """
+                class C
+                {
+                    (object, object) y = [|(($$
+                |]}
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(object, object)", currentParameterIndex: 0));
@@ -211,17 +223,18 @@ class C
         [Fact]
         public async Task MultipleOverloads()
         {
-            var markup = @"
-class Program
-{
-    static void Main(string[] args)
-    {
-        Do1([|($$)|])
-    }
-
-    static void Do1((int, int) i) { }
-    static void Do1((string, string) s) { }
-}";
+            var markup = """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Do1([|($$)|])
+                    }
+
+                    static void Do1((int, int) i) { }
+                    static void Do1((string, string) s) { }
+                }
+                """;
 
             var expectedOrderedItems = new List<SignatureHelpTestItem>();
             expectedOrderedItems.Add(new SignatureHelpTestItem("(int, int)", currentParameterIndex: 0));
@@ -233,28 +246,30 @@ static void Do1((string, string) s) { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/14793")]
         public async Task DoNotCrashInLinkedFile()
         {
-            var markup = @"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj1"" PreprocessorSymbols=""GOO"">
-        <Document FilePath=""SourceDocument""><![CDATA[
-class C
-{
-#if GOO
-    void bar()
-    {
-    }
-#endif
-    void goo()
-    {
-        (int, string) x = ($$
-    }
-}
-]]>
-        </Document>
-    </Project>
-    <Project Language=""C#"" CommonReferences=""true"" AssemblyName=""Proj2"">
-        <Document IsLinkFile=""true"" LinkAssemblyName=""Proj1"" LinkFilePath=""SourceDocument""/>
-    </Project>
-</Workspace>";
+            var markup = """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj1" PreprocessorSymbols="GOO">
+                        <Document FilePath="SourceDocument"><![CDATA[
+                class C
+                {
+                #if GOO
+                    void bar()
+                    {
+                    }
+                #endif
+                    void goo()
+                    {
+                        (int, string) x = ($$
+                    }
+                }
+                ]]>
+                        </Document>
+                    </Project>
+                    <Project Language="C#" CommonReferences="true" AssemblyName="Proj2">
+                        <Document IsLinkFile="true" LinkAssemblyName="Proj1" LinkFilePath="SourceDocument"/>
+                    </Project>
+                </Workspace>
+                """;
             var expectedDescription = new SignatureHelpTestItem($"(int, string)", currentParameterIndex: 0);
             await VerifyItemWithReferenceWorkerAsync(markup, new[] { expectedDescription }, false);
         }
diff --git a/src/EditorFeatures/CSharpTest/SpellCheck/SpellCheckSpanTests.cs b/src/EditorFeatures/CSharpTest/SpellCheck/SpellCheckSpanTests.cs
index c86874d66878b..fc303283ff6b3 100644
--- a/src/EditorFeatures/CSharpTest/SpellCheck/SpellCheckSpanTests.cs
+++ b/src/EditorFeatures/CSharpTest/SpellCheck/SpellCheckSpanTests.cs
@@ -25,8 +25,9 @@ public async Task TestSingleLineComment1()
         [Fact]
         public async Task TestSingleLineComment2()
         {
-            await TestAsync(@"
-{|Comment:// Goo|}");
+            await TestAsync("""
+                {|Comment:// Goo|}
+                """);
         }
 
         [Fact]
@@ -38,64 +39,71 @@ public async Task TestMultiLineComment1()
         [Fact]
         public async Task TestMultiLineComment2()
         {
-            await TestAsync(@"
-{|Comment:/*
-   Goo
- */|}");
+            await TestAsync("""
+                {|Comment:/*
+                   Goo
+                 */|}
+                """);
         }
 
         [Fact]
         public async Task TestMultiLineComment3()
         {
-            await TestAsync(@"
-{|Comment:/*
-   Goo
- |}");
+            await TestAsync("""
+                {|Comment:/*
+                   Goo
+                 |}
+                """);
         }
 
         [Fact]
         public async Task TestMultiLineComment4()
         {
-            await TestAsync(@"
-{|Comment:/**/|}");
+            await TestAsync("""
+                {|Comment:/**/|}
+                """);
         }
 
         [Fact]
         public async Task TestMultiLineComment5()
         {
-            await TestAsync(@"
-{|Comment:/*/|}");
+            await TestAsync("""
+                {|Comment:/*/|}
+                """);
         }
 
         [Fact]
         public async Task TestDocComment1()
         {
-            await TestAsync(@"
-///{|Comment:goo bar baz|}
-class {|Identifier:C|}
-{
-}");
+            await TestAsync("""
+                ///{|Comment:goo bar baz|}
+                class {|Identifier:C|}
+                {
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDocComment2()
         {
-            await TestAsync(@"
-///{|Comment:goo bar baz|}
-///{|Comment:goo bar baz|}
-class {|Identifier:C|}
-{
-}");
+            await TestAsync("""
+                ///{|Comment:goo bar baz|}
+                ///{|Comment:goo bar baz|}
+                class {|Identifier:C|}
+                {
+                }
+                """);
         }
 
         [Fact]
         public async Task TestDocComment3()
         {
-            await TestAsync(@"
-///{|Comment: |}<summary>{|Comment: goo bar baz |}</summary>
-class {|Identifier:C|}
-{
-}");
+            await TestAsync("""
+                ///{|Comment: |}<summary>{|Comment: goo bar baz |}</summary>
+                class {|Identifier:C|}
+                {
+                }
+                """);
         }
 
         [Fact]
@@ -107,35 +115,41 @@ public async Task TestString1()
         [Fact]
         public async Task TestString2()
         {
-            await TestAsync(@""" goo ");
+            await TestAsync("""
+                " goo
+                """);
         }
 
         [Fact]
         public async Task TestString3()
         {
-            await TestAsync(@"
-{|String:"" goo ""|}");
+            await TestAsync("""
+                {|String:" goo "|}
+                """);
         }
 
         [Fact]
         public async Task TestString4()
         {
-            await TestAsync(@"
-"" goo ");
+            await TestAsync("""
+                " goo
+                """);
         }
 
         [Fact]
         public async Task TestString5()
         {
-            await TestAsync(@"
-{|String:@"" goo ""|}");
+            await TestAsync("""
+                {|String:@" goo "|}
+                """);
         }
 
         [Fact]
         public async Task TestString6()
         {
-            await TestAsync(@"
-@"" goo ");
+            await TestAsync("""
+                @" goo
+                """);
         }
 
         [Fact]
@@ -147,79 +161,96 @@ public async Task TestString7()
         [Fact]
         public async Task TestString8()
         {
-            await TestAsync(@""""""" goo """"");
+            await TestAsync(""""
+                """ goo ""
+                """");
         }
 
         [Fact]
         public async Task TestString9()
         {
-            await TestAsync(@""""""" goo """);
+            await TestAsync(""""
+                """ goo "
+                """");
         }
 
         [Fact]
         public async Task TestString10()
         {
-            await TestAsync(@""""""" goo ");
+            await TestAsync(""""
+                """ goo
+                """");
         }
 
         [Fact]
         public async Task TestString11()
         {
-            await TestAsync(@"{|String:""""""
-    goo 
-    """"""|}");
+            await TestAsync(""""
+                {|String:"""
+                    goo 
+                    """|}
+                """");
         }
 
         [Fact]
         public async Task TestString12()
         {
-            await TestAsync(@"""""""
-    goo
-    """"");
+            await TestAsync(""""
+                """
+                    goo
+                    ""
+                """");
         }
 
         [Fact]
         public async Task TestString13()
         {
-            await TestAsync(@"""""""
-    goo
-    """);
+            await TestAsync(""""
+                """
+                    goo
+                    "
+                """");
         }
 
         [Fact]
         public async Task TestString14()
         {
-            await TestAsync(@"""""""
-    goo
-    ");
+            await TestAsync(""""
+                """
+                    goo
+                """");
         }
 
         [Fact]
         public async Task TestString15()
         {
-            await TestAsync(@"
-$""{|String: goo |}""");
+            await TestAsync("""
+                $"{|String: goo |}"
+                """);
         }
 
         [Fact]
         public async Task TestString16()
         {
-            await TestAsync(@"
-$""{|String: goo |}{0}{|String: bar |}""");
+            await TestAsync("""
+                $"{|String: goo |}{0}{|String: bar |}"
+                """);
         }
 
         [Fact]
         public async Task TestString17()
         {
-            await TestAsync(@"
-$""""""{|String: goo |}{0}{|String: bar |}""""""");
+            await TestAsync(""""
+                $"""{|String: goo |}{0}{|String: bar |}"""
+                """");
         }
 
         [Fact]
         public async Task TestString18()
         {
-            await TestAsync(@"
-$""""""{|String: goo |}{0:abcd}{|String: bar |}""""""");
+            await TestAsync(""""
+                $"""{|String: goo |}{0:abcd}{|String: bar |}"""
+                """");
         }
 
         [Fact]
@@ -285,332 +316,366 @@ public async Task TestEscapedString10()
         [Fact]
         public async Task TestIdentifier1()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier2()
         {
-            await TestAsync(@"
-record {|Identifier:C|}
-{
-}");
+            await TestAsync("""
+                record {|Identifier:C|}
+                {
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier3()
         {
-            await TestAsync(@"
-record class {|Identifier:C|}
-{
-}");
+            await TestAsync("""
+                record class {|Identifier:C|}
+                {
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier4()
         {
-            await TestAsync(@"
-delegate void {|Identifier:C|}();");
+            await TestAsync("""
+                delegate void {|Identifier:C|}();
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier5()
         {
-            await TestAsync(@"
-enum {|Identifier:C|} { }");
+            await TestAsync("""
+                enum {|Identifier:C|} { }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier6()
         {
-            await TestAsync(@"
-enum {|Identifier:C|}
-{
-    {|Identifier:D|}
-}");
+            await TestAsync("""
+                enum {|Identifier:C|}
+                {
+                    {|Identifier:D|}
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier7()
         {
-            await TestAsync(@"
-enum {|Identifier:C|}
-{
-    {|Identifier:D|}, {|Identifier:E|}
-}");
+            await TestAsync("""
+                enum {|Identifier:C|}
+                {
+                    {|Identifier:D|}, {|Identifier:E|}
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier8()
         {
-            await TestAsync(@"
-interface {|Identifier:C|} { }");
+            await TestAsync("""
+                interface {|Identifier:C|} { }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier9()
         {
-            await TestAsync(@"
-struct {|Identifier:C|} { }");
+            await TestAsync("""
+                struct {|Identifier:C|} { }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier10()
         {
-            await TestAsync(@"
-record struct {|Identifier:C|}() { }");
+            await TestAsync("""
+                record struct {|Identifier:C|}() { }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier11()
         {
-            await TestAsync(@"
-class {|Identifier:C|}<{|Identifier:T|}> { }");
+            await TestAsync("""
+                class {|Identifier:C|}<{|Identifier:T|}> { }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier12()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private int {|Identifier:X|};
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private int {|Identifier:X|};
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier13()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private int {|Identifier:X|}, {|Identifier:Y|};
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private int {|Identifier:X|}, {|Identifier:Y|};
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier14()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private const int {|Identifier:X|};
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private const int {|Identifier:X|};
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier15()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private const int {|Identifier:X|}, {|Identifier:Y|};
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private const int {|Identifier:X|}, {|Identifier:Y|};
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier16()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private int {|Identifier:X|} => 0;
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private int {|Identifier:X|} => 0;
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier17()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private event Action {|Identifier:X|};
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private event Action {|Identifier:X|};
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier18()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private event Action {|Identifier:X|}, {|Identifier:Y|};
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private event Action {|Identifier:X|}, {|Identifier:Y|};
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier19()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    private event Action {|Identifier:X|} { add { } remove { } }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    private event Action {|Identifier:X|} { add { } remove { } }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier20()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}()
-    {
-        int {|Identifier:E|};
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}()
+                    {
+                        int {|Identifier:E|};
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier21()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}()
-    {
-        int {|Identifier:E|}, {|Identifier:F|};
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}()
+                    {
+                        int {|Identifier:E|}, {|Identifier:F|};
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier22()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}()
-    {
-{|Identifier:E|}:
-        return;
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}()
+                    {
+                {|Identifier:E|}:
+                        return;
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier23()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}(int {|Identifier:E|})
-    {
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}(int {|Identifier:E|})
+                    {
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier24()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}(int {|Identifier:E|})
-    {
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}(int {|Identifier:E|})
+                    {
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier25()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}(int {|Identifier:E|}, int {|Identifier:F|})
-    {
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}(int {|Identifier:E|}, int {|Identifier:F|})
+                    {
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier26()
         {
-            await TestAsync(@"
-static class {|Identifier:C|}
-{
-    static void {|Identifier:D|}(this int {|Identifier:E|})
-    {
-    }
-}");
+            await TestAsync("""
+                static class {|Identifier:C|}
+                {
+                    static void {|Identifier:D|}(this int {|Identifier:E|})
+                    {
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier27()
         {
-            await TestAsync(@"
-namespace {|Identifier:C|}
-{
-}");
+            await TestAsync("""
+                namespace {|Identifier:C|}
+                {
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier28()
         {
-            await TestAsync(@"
-namespace {|Identifier:C|}.{|Identifier:D|}
-{
-}");
+            await TestAsync("""
+                namespace {|Identifier:C|}.{|Identifier:D|}
+                {
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier29()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}()
-    {
-        for (int {|Identifier:E|} = 0; E < 10; E++)
-        {
-        }
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}()
+                    {
+                        for (int {|Identifier:E|} = 0; E < 10; E++)
+                        {
+                        }
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier30()
         {
-            await TestAsync(@"
-class {|Identifier:C|}
-{
-    void {|Identifier:D|}()
-    {
-        Goo(out var {|Identifier:E|});
-    }
-}");
+            await TestAsync("""
+                class {|Identifier:C|}
+                {
+                    void {|Identifier:D|}()
+                    {
+                        Goo(out var {|Identifier:E|});
+                    }
+                }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier31()
         {
-            await TestAsync(@"
-class {|Identifier:C|}() { }");
+            await TestAsync("""
+                class {|Identifier:C|}() { }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier32()
         {
-            await TestAsync(@"
-struct {|Identifier:C|}() { }");
+            await TestAsync("""
+                struct {|Identifier:C|}() { }
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier33()
         {
-            await TestAsync(@"
-class {|Identifier:C|};");
+            await TestAsync("""
+                class {|Identifier:C|};
+                """);
         }
 
         [Fact]
         public async Task TestIdentifier34()
         {
-            await TestAsync(@"
-struct {|Identifier:C|};");
+            await TestAsync("""
+                struct {|Identifier:C|};
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/SplitComment/SplitCommentCommandHandlerTests.cs b/src/EditorFeatures/CSharpTest/SplitComment/SplitCommentCommandHandlerTests.cs
index 10213ce0404a6..f7d70dede086c 100644
--- a/src/EditorFeatures/CSharpTest/SplitComment/SplitCommentCommandHandlerTests.cs
+++ b/src/EditorFeatures/CSharpTest/SplitComment/SplitCommentCommandHandlerTests.cs
@@ -22,21 +22,25 @@ protected override TestWorkspace CreateWorkspace(string markup)
         public void TestWithSelection()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //[|Test|] Comment
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //
-        //Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //[|Test|] Comment
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //
+                        //Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -44,21 +48,25 @@ public static void Main(string[] args)
         public void TestWithAllWhitespaceSelection()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // [|  |] Test Comment
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //
-        // Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // [|  |] Test Comment
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //
+                        // Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -66,13 +74,15 @@ public static void Main(string[] args)
         public void TestMissingInSlashes()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        /[||]/Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        /[||]/Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -80,11 +90,13 @@ public static void Main(string[] args)
         public void TestMissingAtEndOfFile()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //Test Comment[||]");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //Test Comment[||]
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -92,13 +104,15 @@ public static void Main(string[] args)
         public void TestMissingBeforeSlashes()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        [||]//Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        [||]//Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -106,13 +120,15 @@ public static void Main(string[] args)
         public void TestMissingWithMultiSelection()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //[||]Test[||] Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //[||]Test[||] Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -120,21 +136,25 @@ public static void Main(string[] args)
         public void TestSplitStartOfComment()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //[||]Test Comment
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //
-        //Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //[||]Test Comment
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //
+                        //Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -142,21 +162,25 @@ public static void Main(string[] args)
         public void TestSplitStartOfQuadComment()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        ////[||]Test Comment
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        ////
-        ////Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        ////[||]Test Comment
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        ////
+                        ////Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -165,13 +189,15 @@ public static void Main(string[] args)
         public void TestSplitMiddleOfQuadComment()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //[||]//Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //[||]//Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/48547")]
@@ -179,13 +205,15 @@ public static void Main(string[] args)
         public void TestSplitWithCommentAfterwards1()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // goo[||]  //Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // goo[||]  //Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/48547")]
@@ -193,13 +221,15 @@ public static void Main(string[] args)
         public void TestSplitWithCommentAfterwards2()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // goo [||] //Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // goo [||] //Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/48547")]
@@ -207,13 +237,15 @@ public static void Main(string[] args)
         public void TestSplitWithCommentAfterwards3()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // goo  [||]//Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // goo  [||]//Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/48547")]
@@ -221,13 +253,15 @@ public static void Main(string[] args)
         public void TestSplitWithCommentAfterwards4()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // [|goo|] //Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // [|goo|] //Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -235,21 +269,25 @@ public static void Main(string[] args)
         public void TestSplitStartOfCommentWithLeadingSpace1()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // [||]Test Comment
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //
-        // Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // [||]Test Comment
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //
+                        // Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -257,21 +295,25 @@ public static void Main(string[] args)
         public void TestSplitStartOfCommentWithLeadingSpace2()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //[||] Test Comment
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        //
-        //Test Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //[||] Test Comment
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        //
+                        //Test Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -290,14 +332,16 @@ public static void Main(string[] args)
         //    {commentValue}
     }}
 }}",
-@"public class Program
+"""
+public class Program
 {
     public static void Main(string[] args) 
     { 
         //    X
         //    Test Comment
     }
-}");
+}
+""");
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -317,14 +361,16 @@ public static void Main(string[] args)
         ////    {commentValue}
     }}
 }}",
-@"public class Program
+"""
+public class Program
 {
     public static void Main(string[] args) 
     { 
         ////    X
         ////    Test Comment
     }
-}");
+}
+""");
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -332,21 +378,25 @@ public static void Main(string[] args)
         public void TestSplitMiddleOfComment()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // Test [||]Comment
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // Test
-        // Comment
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // Test [||]Comment
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // Test
+                        // Comment
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -354,13 +404,15 @@ public static void Main(string[] args)
         public void TestSplitEndOfComment()
         {
             TestNotHandled(
-@"public class Program
-{
-    public static void Main(string[] args) 
-    { 
-        // Test Comment[||]
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) 
+                    { 
+                        // Test Comment[||]
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -368,19 +420,23 @@ public static void Main(string[] args)
         public void TestSplitCommentEndOfLine1()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) // Test [||]Comment
-    {
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) // Test
-                                           // Comment
-    {
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) // Test [||]Comment
+                    {
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) // Test
+                                                           // Comment
+                    {
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -388,19 +444,23 @@ public static void Main(string[] args) // Test
         public void TestSplitCommentEndOfLine2()
         {
             TestHandled(
-@"public class Program
-{
-    public static void Main(string[] args) // Test[||] Comment
-    {
-    }
-}",
-@"public class Program
-{
-    public static void Main(string[] args) // Test
-                                           // Comment
-    {
-    }
-}");
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) // Test[||] Comment
+                    {
+                    }
+                }
+                """,
+                """
+                public class Program
+                {
+                    public static void Main(string[] args) // Test
+                                                           // Comment
+                    {
+                    }
+                }
+                """);
         }
 
         [WorkItem("https://github.com/dotnet/roslyn/issues/38516")]
@@ -408,37 +468,43 @@ public static void Main(string[] args) // Test
         public void TestUseTabs()
         {
             TestHandled(
-@"public class Program
-{
-	public static void Main(string[] args) 
-	{
-		// X[||]Test Comment
-	}
-}",
-@"public class Program
-{
-	public static void Main(string[] args) 
-	{
-		// X
-		// Test Comment
-	}
-}", useTabs: true);
+                """
+                public class Program
+                {
+                	public static void Main(string[] args) 
+                	{
+                		// X[||]Test Comment
+                	}
+                }
+                """,
+                """
+                public class Program
+                {
+                	public static void Main(string[] args) 
+                	{
+                		// X
+                		// Test Comment
+                	}
+                }
+                """, useTabs: true);
         }
 
         [WpfFact]
         public void TestDoesNotHandleDocComments()
         {
             TestNotHandled(
-@"namespace TestNamespace
-{
-    public class Program
-    {
-        /// <summary>Test [||]Comment</summary>
-        public static void Main(string[] args)
-        {
-        }
-    }
-}");
+                """
+                namespace TestNamespace
+                {
+                    public class Program
+                    {
+                        /// <summary>Test [||]Comment</summary>
+                        public static void Main(string[] args)
+                        {
+                        }
+                    }
+                }
+                """);
         }
     }
 }
diff --git a/src/EditorFeatures/CSharpTest/Squiggles/ErrorSquiggleProducerTests.cs b/src/EditorFeatures/CSharpTest/Squiggles/ErrorSquiggleProducerTests.cs
index 9951a29ffeff8..67dc4c038c77e 100644
--- a/src/EditorFeatures/CSharpTest/Squiggles/ErrorSquiggleProducerTests.cs
+++ b/src/EditorFeatures/CSharpTest/Squiggles/ErrorSquiggleProducerTests.cs
@@ -65,20 +65,22 @@ public async Task ErrorTagGeneratedForWarning()
         public async Task ErrorTagGeneratedForWarningAsError()
         {
             var workspaceXml =
-@"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <CompilationOptions ReportDiagnostic = ""Error"" />
-            <Document FilePath = ""Test.cs"" >
-                class Program
-                {
-                    void Test()
-                    {
-                        int a = 5;
-                    }
-                }
-        </Document>
-    </Project>
-</Workspace>";
+                """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <CompilationOptions ReportDiagnostic = "Error" />
+                            <Document FilePath = "Test.cs" >
+                                class Program
+                                {
+                                    void Test()
+                                    {
+                                        int a = 5;
+                                    }
+                                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             using var workspace = TestWorkspace.Create(workspaceXml);
 
@@ -92,26 +94,28 @@ void Test()
         public async Task CustomizableTagsForUnnecessaryCode()
         {
             var workspaceXml =
-@"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath = ""Test.cs"" >
-// System is used - rest are unused.
-using System.Collections;
-using System;
-using System.Diagnostics;
-using System.Collections.Generic;
+                """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath = "Test.cs" >
+                // System is used - rest are unused.
+                using System.Collections;
+                using System;
+                using System.Diagnostics;
+                using System.Collections.Generic;
 
-class Program
-{
-    void Test()
-    {
-        Int32 x = 2; // Int32 can be simplified.
-        x += 1;
-    }
-}
-        </Document>
-    </Project>
-</Workspace>";
+                class Program
+                {
+                    void Test()
+                    {
+                        Int32 x = 2; // Int32 can be simplified.
+                        x += 1;
+                    }
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             using var workspace = TestWorkspace.Create(workspaceXml, composition: SquiggleUtilities.CompositionWithSolutionCrawler);
             var language = workspace.Projects.Single().Language;
@@ -298,15 +302,17 @@ public async Task TestNoErrorsAfterProjectRemoved()
         public async Task BuildErrorZeroLengthSpan()
         {
             var workspaceXml =
-@"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath = ""Test.cs"" >
-            class Test
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath = "Test.cs" >
+                            class Test
+                {
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             using var workspace = TestWorkspace.Create(workspaceXml, composition: s_mockComposition);
 
@@ -332,15 +338,17 @@ class Test
         public async Task LiveErrorZeroLengthSpan()
         {
             var workspaceXml =
-@"<Workspace>
-    <Project Language=""C#"" CommonReferences=""true"">
-        <Document FilePath = ""Test.cs"" >
-            class Test
-{
-}
-        </Document>
-    </Project>
-</Workspace>";
+                """
+                <Workspace>
+                    <Project Language="C#" CommonReferences="true">
+                        <Document FilePath = "Test.cs" >
+                            class Test
+                {
+                }
+                        </Document>
+                    </Project>
+                </Workspace>
+                """;
 
             using var workspace = TestWorkspace.Create(workspaceXml, composition: s_mockComposition);
 
diff --git a/src/EditorFeatures/CSharpTest/StringIndentation/StringIndentationTests.cs b/src/EditorFeatures/CSharpTest/StringIndentation/StringIndentationTests.cs
index 1d20ca0623ad5..736b99c0ad4a9 100644
--- a/src/EditorFeatures/CSharpTest/StringIndentation/StringIndentationTests.cs
+++ b/src/EditorFeatures/CSharpTest/StringIndentation/StringIndentationTests.cs
@@ -322,372 +322,412 @@ void M()
         [Fact]
         public async Task TestCase10()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v =
-             $$""""""""
-            |goo
-             """""""";
-    }
-}");
+            await TestAsync("""""
+                class C
+                {
+                    void M()
+                    {
+                        var v =
+                             $$""""
+                            |goo
+                             """";
+                    }
+                }
+                """"");
         }
 
         [Fact]
         public async Task TestCase11()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v =
-            $$""""""""
-            |goo
-             """""""";
-    }
-}");
+            await TestAsync("""""
+                class C
+                {
+                    void M()
+                    {
+                        var v =
+                            $$""""
+                            |goo
+                             """";
+                    }
+                }
+                """"");
         }
 
         [Fact]
         public async Task TestCase12()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v =
-           $$""""""""
-            |goo
-             """""""";
-    }
-}");
+            await TestAsync("""""
+                class C
+                {
+                    void M()
+                    {
+                        var v =
+                           $$""""
+                            |goo
+                             """";
+                    }
+                }
+                """"");
         }
 
         [Fact]
         public async Task TestWithHoles1()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    goo
-           |    { 1 + 1 }
-           |    baz
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    goo
+                           |    { 1 + 1 }
+                           |    baz
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles2()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    goo{
-           |    1 + 1
-           |    }baz
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    goo{
+                           |    1 + 1
+                           |    }baz
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles3()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    goo{
-           |1 + 1
-           |    }baz
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    goo{
+                           |1 + 1
+                           |    }baz
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles4()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    goo{
-           1 + 1
-                }baz
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    goo{
+                           1 + 1
+                                }baz
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles5()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    goo{
-           |1 + 1
-           |    }baz
-           |    quux
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    goo{
+                           |1 + 1
+                           |    }baz
+                           |    quux
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles6()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    goo{
-         1 + 1
-                }baz
-           |    quux
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    goo{
+                         1 + 1
+                                }baz
+                           |    quux
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles7()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |goo{
-         1 + 1
-         }baz
-           |quux
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |goo{
+                         1 + 1
+                         }baz
+                           |quux
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles8()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    { 1 + 1 }
-           |    baz
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    { 1 + 1 }
+                           |    baz
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles9()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    {
-           |        1 + 1
-           |    }
-           |    baz
-            """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    {
+                           |        1 + 1
+                           |    }
+                           |    baz
+                            """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithHoles10()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var v = $""""""
-           |    {
-        1 + 1
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var v = $"""
+                           |    {
+                        1 + 1
+                                }
+                           |    baz
+                            """;
+                    }
                 }
-           |    baz
-            """""";
-    }
-}");
+                """");
         }
 
         [Fact]
         public async Task TestWithNestedHoles1()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var x =
-            $""""""
-            |goo
-            |{
-            |   $""""""
-            |   |bar
-            |    """"""
-            |}
-            |baz
-             """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var x =
+                            $"""
+                            |goo
+                            |{
+                            |   $"""
+                            |   |bar
+                            |    """
+                            |}
+                            |baz
+                             """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithNestedHoles2()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var x =
-            $""""""
-            |goo
-            |{
-            |   $""""""
-            |   |bar
-            |   |{
-            |   |   1 + 1
-            |   |}
-            |    """"""
-            |}
-            |baz
-             """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var x =
+                            $"""
+                            |goo
+                            |{
+                            |   $"""
+                            |   |bar
+                            |   |{
+                            |   |   1 + 1
+                            |   |}
+                            |    """
+                            |}
+                            |baz
+                             """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithNestedHoles3()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var x =
-            $""""""
-            |goo
-            |{
-            |   $""""""
-            |   |bar
-            |   |{
-            |   1 + 1
-            |    }
-            |    """"""
-            |}
-            |baz
-             """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var x =
+                            $"""
+                            |goo
+                            |{
+                            |   $"""
+                            |   |bar
+                            |   |{
+                            |   1 + 1
+                            |    }
+                            |    """
+                            |}
+                            |baz
+                             """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithNestedHoles4()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var x =
-            $""""""
-            |goo
-            |{
-                $""""""
-                |bar
-                |{
-            1 + 1
-                 }
-                 """"""
-             }
-            |baz
-             """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var x =
+                            $"""
+                            |goo
+                            |{
+                                $"""
+                                |bar
+                                |{
+                            1 + 1
+                                 }
+                                 """
+                             }
+                            |baz
+                             """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithNestedHoles5()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var x =
-            $""""""
-            |goo
-            |{
-        $""""""
-        |bar
-         """"""
-             }
-            |baz
-             """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var x =
+                            $"""
+                            |goo
+                            |{
+                        $"""
+                        |bar
+                         """
+                             }
+                            |baz
+                             """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithNestedHoles6()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var x =
-            $""""""
-            |goo
-            |{
-        $""""""
-        |bar
-        |{
-        |   1 + 1
-        |}
-         """"""
-             }
-            |baz
-             """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var x =
+                            $"""
+                            |goo
+                            |{
+                        $"""
+                        |bar
+                        |{
+                        |   1 + 1
+                        |}
+                         """
+                             }
+                            |baz
+                             """;
+                    }
+                }
+                """");
         }
 
         [Fact]
         public async Task TestWithNestedHoles7()
         {
-            await TestAsync(@"class C
-{
-    void M()
-    {
-        var x =
-            $""""""
-            |goo
-            |{
-        $""""""
-        |bar
-        |{
-        1 + 1
-         }
-         """"""
-             }
-            |baz
-             """""";
-    }
-}");
+            await TestAsync(""""
+                class C
+                {
+                    void M()
+                    {
+                        var x =
+                            $"""
+                            |goo
+                            |{
+                        $"""
+                        |bar
+                        |{
+                        1 + 1
+                         }
+                         """
+                             }
+                            |baz
+                             """;
+                    }
+                }
+                """");
         }
 
         [Fact, WorkItem("https://devdiv.visualstudio.com/DevDiv/_workitems/edit/1542623")]
diff --git a/src/EditorFeatures/CSharpTest/SuggestionTags/SuggestionTagProducerTests.cs b/src/EditorFeatures/CSharpTest/SuggestionTags/SuggestionTagProducerTests.cs
index 1cbdcad9eda7e..7bc8e01eff50e 100644
--- a/src/EditorFeatures/CSharpTest/SuggestionTags/SuggestionTagProducerTests.cs
+++ b/src/EditorFeatures/CSharpTest/SuggestionTags/SuggestionTagProducerTests.cs
@@ -31,12 +31,14 @@ public async Task SuggestionTagTest1(bool isSuppressed)
             var pragmaText = isSuppressed ? $@"#pragma warning disable {IDEDiagnosticIds.UseObjectInitializerDiagnosticId}
 " : string.Empty;
             var (spans, selection) = await GetTagSpansAndSelectionAsync(
-pragmaText + @"class C {
+pragmaText + """
+class C {
     void M() {
         var v = [|ne|]w X();
         v.Y = 1;
     }
-}");
+}
+""");
             if (isSuppressed)
             {
                 Assert.Empty(spans);
diff --git a/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyCompilationsTests.cs b/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyCompilationsTests.cs
index ee1c9ce775378..3ae7f39f8085e 100644
--- a/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyCompilationsTests.cs
+++ b/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyCompilationsTests.cs
@@ -21,53 +21,55 @@ public partial class SymbolKeyTest : SymbolKeyTestBase
         [Fact]
         public void C2CTypeSymbolUnchanged01()
         {
-            var src1 = @"using System;
-
-public delegate void DGoo(int p1, string p2);
-
-namespace N1.N2
-{
-    public interface IGoo { }
-    namespace N3
-    {
-        public class CGoo 
-        {
-            public struct SGoo 
-            {
-                public enum EGoo { Zero, One }
-            }
-        }
-    }
-}
-";
-
-            var src2 = @"using System;
-
-public delegate void DGoo(int p1, string p2);
-
-namespace N1.N2
-{
-    public interface IGoo 
-    {
-        // Add member
-        N3.CGoo GetClass();
-    }
-
-    namespace N3
-    {
-        public class CGoo 
-        {
-            public struct SGoo 
-            {
-                // Update member
-                public enum EGoo { Zero, One, Two }
-            }
-            // Add member
-            public void M(int n) { Console.WriteLine(n); }
-        }
-    }
-}
-";
+            var src1 = """
+                using System;
+
+                public delegate void DGoo(int p1, string p2);
+
+                namespace N1.N2
+                {
+                    public interface IGoo { }
+                    namespace N3
+                    {
+                        public class CGoo 
+                        {
+                            public struct SGoo 
+                            {
+                                public enum EGoo { Zero, One }
+                            }
+                        }
+                    }
+                }
+                """;
+
+            var src2 = """
+                using System;
+
+                public delegate void DGoo(int p1, string p2);
+
+                namespace N1.N2
+                {
+                    public interface IGoo 
+                    {
+                        // Add member
+                        N3.CGoo GetClass();
+                    }
+
+                    namespace N3
+                    {
+                        public class CGoo 
+                        {
+                            public struct SGoo 
+                            {
+                                // Update member
+                                public enum EGoo { Zero, One, Two }
+                            }
+                            // Add member
+                            public void M(int n) { Console.WriteLine(n); }
+                        }
+                    }
+                }
+                """;
 
             var comp1 = CreateCompilation(src1, assemblyName: "Test");
             var comp2 = CreateCompilation(src2, assemblyName: "Test");
@@ -83,12 +85,12 @@ public void C2CErrorSymbolUnchanged01()
         {
             var src1 = @"public void Method() { }";
 
-            var src2 = @"
-public void Method() 
-{ 
-    System.Console.WriteLine(12345);
-}
-";
+            var src2 = """
+                public void Method() 
+                { 
+                    System.Console.WriteLine(12345);
+                }
+                """;
 
             var comp1 = CreateCompilation(src1, assemblyName: "C2CErrorSymbolUnchanged01");
             var comp2 = CreateCompilation(src2, assemblyName: "C2CErrorSymbolUnchanged01");
@@ -111,16 +113,17 @@ public void Method()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/820263")]
         public void PartialDefinitionAndImplementationResolveCorrectly()
         {
-            var src = @"using System;
-namespace NS
-{
-    public partial class C1
-    {
-        partial void M() { }
-        partial void M();
-    }
-}
-";
+            var src = """
+                using System;
+                namespace NS
+                {
+                    public partial class C1
+                    {
+                        partial void M() { }
+                        partial void M();
+                    }
+                }
+                """;
 
             var comp = (Compilation)CreateCompilation(src, assemblyName: "Test");
 
@@ -137,16 +140,17 @@ partial void M() { }
         [Fact]
         public void ExtendedPartialDefinitionAndImplementationResolveCorrectly()
         {
-            var src = @"using System;
-namespace NS
-{
-    public partial class C1
-    {
-        public partial void M() { }
-        public partial void M();
-    }
-}
-";
+            var src = """
+                using System;
+                namespace NS
+                {
+                    public partial class C1
+                    {
+                        public partial void M() { }
+                        public partial void M();
+                    }
+                }
+                """;
 
             var comp = (Compilation)CreateCompilation(src, assemblyName: "Test");
 
@@ -163,34 +167,33 @@ public partial void M() { }
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/916341")]
         public void ExplicitIndexerImplementationResolvesCorrectly()
         {
-            var src = @"
-interface I
-{
-    object this[int index] { get; }
-}
-interface I<T>
-{
-    T this[int index] { get; }
-}
-class C<T> : I<T>, I
-{
-    object I.this[int index]
-    {
-        get
-        {
-            throw new System.NotImplementedException();
-        }
-    }
-    T I<T>.this[int index]
-    {
-        get
-        {
-            throw new System.NotImplementedException();
-        }
-    }
-}
-
-";
+            var src = """
+                interface I
+                {
+                    object this[int index] { get; }
+                }
+                interface I<T>
+                {
+                    T this[int index] { get; }
+                }
+                class C<T> : I<T>, I
+                {
+                    object I.this[int index]
+                    {
+                        get
+                        {
+                            throw new System.NotImplementedException();
+                        }
+                    }
+                    T I<T>.this[int index]
+                    {
+                        get
+                        {
+                            throw new System.NotImplementedException();
+                        }
+                    }
+                }
+                """;
 
             var compilation = (Compilation)CreateCompilation(src, assemblyName: "Test");
 
@@ -208,15 +211,17 @@ T I<T>.this[int index]
         public void RecursiveReferenceToConstructedGeneric()
         {
             var src1 =
-@"using System.Collections.Generic;
-
-class C
-{
-    public void M<Z>(List<Z> list)
-    {
-        var v = list.Add(default(Z));
-    }
-}";
+                """
+                using System.Collections.Generic;
+
+                class C
+                {
+                    public void M<Z>(List<Z> list)
+                    {
+                        var v = list.Add(default(Z));
+                    }
+                }
+                """;
 
             var comp1 = CreateCompilation(src1);
             var comp2 = CreateCompilation(src1);
@@ -240,13 +245,14 @@ public void M<Z>(List<Z> list)
         [Fact]
         public void FileType1()
         {
-            var src1 = @"using System;
-
-namespace N1.N2
-{
-    file class C { }
-}
-";
+            var src1 = """
+                using System;
+
+                namespace N1.N2
+                {
+                    file class C { }
+                }
+                """;
             var originalComp = CreateCompilation(src1, assemblyName: "Test");
             var newComp = CreateCompilation(src1, assemblyName: "Test");
 
@@ -260,13 +266,14 @@ file class C { }
         [Fact]
         public void FileType2()
         {
-            var src1 = @"using System;
-
-namespace N1.N2
-{
-    file class C<T> { }
-}
-";
+            var src1 = """
+                using System;
+
+                namespace N1.N2
+                {
+                    file class C<T> { }
+                }
+                """;
             var originalComp = CreateCompilation(src1, assemblyName: "Test");
             var newComp = CreateCompilation(src1, assemblyName: "Test");
 
@@ -280,13 +287,14 @@ file class C<T> { }
         [Fact]
         public void FileType3()
         {
-            var src1 = @"using System;
-
-namespace N1.N2
-{
-    file class C { }
-}
-";
+            var src1 = """
+                using System;
+
+                namespace N1.N2
+                {
+                    file class C { }
+                }
+                """;
             // this should result in two entirely separate file symbols.
             // note that the IDE can only distinguish file-local type symbols with the same name when they have distinct file paths.
             // We are OK with this as we will require file types with identical names to have distinct file paths later in the preview.
@@ -305,20 +313,21 @@ file class C { }
         public void FileType4()
         {
             // we should be able to distinguish a file-local type and non-file-local type when they have the same source name.
-            var src1 = SyntaxFactory.ParseSyntaxTree(@"using System;
-
-namespace N1.N2
-{
-    file class C { }
-}
-", path: "File1.cs");
-
-            var src2 = SyntaxFactory.ParseSyntaxTree(@"
-namespace N1.N2
-{
-    class C { }
-}
-", path: "File2.cs");
+            var src1 = SyntaxFactory.ParseSyntaxTree("""
+                using System;
+
+                namespace N1.N2
+                {
+                    file class C { }
+                }
+                """, path: "File1.cs");
+
+            var src2 = SyntaxFactory.ParseSyntaxTree("""
+                namespace N1.N2
+                {
+                    class C { }
+                }
+                """, path: "File2.cs");
             var originalComp = CreateCompilation(new[] { src1, src2 }, assemblyName: "Test");
             var newComp = CreateCompilation(new[] { src1, src2 }, assemblyName: "Test");
 
@@ -336,50 +345,52 @@ class C { }
         [Fact]
         public void C2CTypeSymbolChanged01()
         {
-            var src1 = @"using System;
-
-public delegate void DGoo(int p1);
-
-namespace N1.N2
-{
-    public interface IBase { }
-    public interface IGoo { }
-    namespace N3
-    {
-        public class CGoo 
-        {
-            public struct SGoo 
-            {
-                public enum EGoo { Zero, One }
-            }
-        }
-    }
-}
-";
-
-            var src2 = @"using System;
-
-public delegate void DGoo(int p1, string p2); // add 1 more parameter
-
-namespace N1.N2
-{
-    public interface IBase { }
-    public interface IGoo : IBase // add base interface
-    {
-    }
-
-    namespace N3
-    {
-        public class CGoo : IGoo // impl interface
-        {
-            private struct SGoo // change modifier
-            {
-                internal enum EGoo : long { Zero, One } // change base class, and modifier
-            }
-        }
-    }
-}
-";
+            var src1 = """
+                using System;
+
+                public delegate void DGoo(int p1);
+
+                namespace N1.N2
+                {
+                    public interface IBase { }
+                    public interface IGoo { }
+                    namespace N3
+                    {
+                        public class CGoo 
+                        {
+                            public struct SGoo 
+                            {
+                                public enum EGoo { Zero, One }
+                            }
+                        }
+                    }
+                }
+                """;
+
+            var src2 = """
+                using System;
+
+                public delegate void DGoo(int p1, string p2); // add 1 more parameter
+
+                namespace N1.N2
+                {
+                    public interface IBase { }
+                    public interface IGoo : IBase // add base interface
+                    {
+                    }
+
+                    namespace N3
+                    {
+                        public class CGoo : IGoo // impl interface
+                        {
+                            private struct SGoo // change modifier
+                            {
+                                internal enum EGoo : long { Zero, One } // change base class, and modifier
+                            }
+                        }
+                    }
+                }
+                """;
 
             var comp1 = CreateCompilation(src1, assemblyName: "Test");
             var comp2 = CreateCompilation(src2, assemblyName: "Test");
@@ -393,30 +404,31 @@ internal enum EGoo : long { Zero, One } // change base class, and modifier
         [Fact]
         public void C2CTypeSymbolChanged02()
         {
-            var src1 = @"using System;
-namespace NS
-{
-    public class C1 
-    {
-        public void M() {}
-    }
-}
-";
-
-            var src2 = @"
-namespace NS
-{
-    internal class C1 // add new C1
-    {
-        public string P { get; set; }
-    }
-
-    public class C2  // rename C1 to C2
-    {
-        public void M() {}
-    }
-}
-";
+            var src1 = """
+                using System;
+                namespace NS
+                {
+                    public class C1 
+                    {
+                        public void M() {}
+                    }
+                }
+                """;
+
+            var src2 = """
+                namespace NS
+                {
+                    internal class C1 // add new C1
+                    {
+                        public string P { get; set; }
+                    }
+
+                    public class C2  // rename C1 to C2
+                    {
+                        public void M() {}
+                    }
+                }
+                """;
             var comp1 = (Compilation)CreateCompilation(src1, assemblyName: "Test");
             var comp2 = (Compilation)CreateCompilation(src2, assemblyName: "Test");
 
@@ -439,31 +451,33 @@ public void M() {}
         [Fact]
         public void C2CMemberSymbolChanged01()
         {
-            var src1 = @"using System;
-using System.Collections.Generic;
-
-public class Test
-{
-    private byte field = 123;
-    internal string P { get; set; }
-    public void M(ref int n) { }
-    event Action<string> myEvent;
-}
-";
-
-            var src2 = @"using System;
-public class Test
-{
-    internal protected byte field = 255;    // change modifier and init-value
-    internal string P { get { return null; } }       // remove 'set'
-    public int M(ref int n) { return 0;  }   // change ret type
-    event Action<string> myEvent             // add add/remove
-    {
-        add { }
-        remove { }
-    }
-}
-";
+            var src1 = """
+                using System;
+                using System.Collections.Generic;
+
+                public class Test
+                {
+                    private byte field = 123;
+                    internal string P { get; set; }
+                    public void M(ref int n) { }
+                    event Action<string> myEvent;
+                }
+                """;
+
+            var src2 = """
+                using System;
+                public class Test
+                {
+                    internal protected byte field = 255;    // change modifier and init-value
+                    internal string P { get { return null; } }       // remove 'set'
+                    public int M(ref int n) { return 0;  }   // change ret type
+                    event Action<string> myEvent             // add add/remove
+                    {
+                        add { }
+                        remove { }
+                    }
+                }
+                """;
             var comp1 = CreateCompilation(src1, assemblyName: "Test");
             var comp2 = CreateCompilation(src2, assemblyName: "Test");
 
@@ -479,23 +493,25 @@ event Action<string> myEvent             // add add/remove
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542700")]
         public void C2CIndexerSymbolChanged01()
         {
-            var src1 = @"using System;
-using System.Collections.Generic;
-
-public class Test
-{
-    public string this[string p1] { set { } }
-    protected long this[long p1] { set { } }
-}
-";
-
-            var src2 = @"using System;
-public class Test
-{
-    internal string this[string p1] { set { } } // change modifier
-    protected long this[long p1] { get { return 0; } set { } }  // add 'get'
-}
-";
+            var src1 = """
+                using System;
+                using System.Collections.Generic;
+
+                public class Test
+                {
+                    public string this[string p1] { set { } }
+                    protected long this[long p1] { set { } }
+                }
+                """;
+
+            var src2 = """
+                using System;
+                public class Test
+                {
+                    internal string this[string p1] { set { } } // change modifier
+                    protected long this[long p1] { get { return 0; } set { } }  // add 'get'
+                }
+                """;
             var comp1 = (Compilation)CreateCompilation(src1, assemblyName: "Test");
             var comp2 = (Compilation)CreateCompilation(src2, assemblyName: "Test");
 
@@ -512,15 +528,15 @@ internal string this[string p1] { set { } } // change modifier
         [Fact]
         public void C2CAssemblyChanged01()
         {
-            var src = @"
-namespace NS
-{
-    public class C1 
-    {
-        public void M() {}
-    }
-}
-";
+            var src = """
+                namespace NS
+                {
+                    public class C1 
+                    {
+                        public void M() {}
+                    }
+                }
+                """;
             var comp1 = (Compilation)CreateCompilation(src, assemblyName: "Assembly1");
             var comp2 = (Compilation)CreateCompilation(src, assemblyName: "Assembly2");
 
@@ -603,17 +619,17 @@ public void C2CAssemblyChanged03()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/546254")]
         public void C2CAssemblyChanged04()
         {
-            var src = @"
-[assembly: System.Reflection.AssemblyVersion(""1.2.3.4"")] 
-[assembly: System.Reflection.AssemblyTitle(""One Hundred Years of Solitude"")]
-public class C {}
-";
-
-            var src2 = @"
-[assembly: System.Reflection.AssemblyVersion(""1.2.3.42"")] 
-[assembly: System.Reflection.AssemblyTitle(""One Hundred Years of Solitude"")]
-public class C {}
-";
+            var src = """
+                [assembly: System.Reflection.AssemblyVersion("1.2.3.4")] 
+                [assembly: System.Reflection.AssemblyTitle("One Hundred Years of Solitude")]
+                public class C {}
+                """;
+
+            var src2 = """
+                [assembly: System.Reflection.AssemblyVersion("1.2.3.42")] 
+                [assembly: System.Reflection.AssemblyTitle("One Hundred Years of Solitude")]
+                public class C {}
+                """;
 
             // different versions
             var comp1 = (Compilation)CreateCompilation(src, assemblyName: "Assembly");
diff --git a/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyMetadataVsSourceTests.cs b/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyMetadataVsSourceTests.cs
index 8968a7af94e39..6e9388006912d 100644
--- a/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyMetadataVsSourceTests.cs
+++ b/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyMetadataVsSourceTests.cs
@@ -24,38 +24,40 @@ public partial class SymbolKeyTest : SymbolKeyTestBase
         [Fact]
         public void M2SNamedTypeSymbols01()
         {
-            var src1 = @"using System;
+            var src1 = """
+                using System;
 
-public delegate void D(int p1, string p2);
+                public delegate void D(int p1, string p2);
 
-namespace N1.N2
-{
-    public interface I { }
-    namespace N3
-    {
-        public class C 
-        {
-            public struct S 
-            {
-                public enum E { Zero, One, Two }
-                public void M(int n) { Console.WriteLine(n); }
-            }
-        }
-    }
-}
-";
+                namespace N1.N2
+                {
+                    public interface I { }
+                    namespace N3
+                    {
+                        public class C 
+                        {
+                            public struct S 
+                            {
+                                public enum E { Zero, One, Two }
+                                public void M(int n) { Console.WriteLine(n); }
+                            }
+                        }
+                    }
+                }
+                """;
 
-            var src2 = @"using System;
-using N1.N2.N3;
+            var src2 = """
+                using System;
+                using N1.N2.N3;
 
-public class App : C
-{
-    private event D myEvent;
-    internal N1.N2.I Prop { get; set; }
-    protected C.S.E this[int x] { set { } }
-    public void M(C.S s) { s.M(123); }
-}
-";
+                public class App : C
+                {
+                    private event D myEvent;
+                    internal N1.N2.I Prop { get; set; }
+                    protected C.S.E this[int x] { set { } }
+                    public void M(C.S s) { s.M(123); }
+                }
+                """;
 
             var comp1 = CreateCompilation(src1);
 
@@ -94,50 +96,52 @@ protected C.S.E this[int x] { set { } }
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/542700")]
         public void M2SNonTypeMemberSymbols01()
         {
-            var src1 = @"using System;
+            var src1 = """
+                using System;
 
-namespace N1
-{
-    public interface IGoo
-    {
-        void M(int p1, int p2);
-        void M(params short[] ary);
+                namespace N1
+                {
+                    public interface IGoo
+                    {
+                        void M(int p1, int p2);
+                        void M(params short[] ary);
 
-        void M(string p1);
-        void M(ref string p1);
-    }
+                        void M(string p1);
+                        void M(ref string p1);
+                    }
 
-    public struct S
-    {
-        public event Action<S> PublicEvent { add { } remove { } }
-        public IGoo PublicField;
-        public string PublicProp { get; set; }
-        public short this[sbyte p] { get { return p; } }
-    }
-}
-";
+                    public struct S
+                    {
+                        public event Action<S> PublicEvent { add { } remove { } }
+                        public IGoo PublicField;
+                        public string PublicProp { get; set; }
+                        public short this[sbyte p] { get { return p; } }
+                    }
+                }
+                """;
 
-            var src2 = @"using System;
-using AN = N1;
+            var src2 = """
+                using System;
+                using AN = N1;
 
-public class App
-{
-    static void Main()
-    {
-        var obj = new AN.S();
+                public class App
+                {
+                    static void Main()
+                    {
+                        var obj = new AN.S();
 
-        /*<bind0>*/obj.PublicEvent/*</bind0>*/ += EH;
+                        /*<bind0>*/obj.PublicEvent/*</bind0>*/ += EH;
 
-        var igoo = /*<bind1>*/obj.PublicField/*</bind1>*/;
+                        var igoo = /*<bind1>*/obj.PublicField/*</bind1>*/;
 
-        /*<bind3>*/igoo.M(/*<bind2>*/obj.PublicProp/*</bind2>*/)/*</bind3>*/;
+                        /*<bind3>*/igoo.M(/*<bind2>*/obj.PublicProp/*</bind2>*/)/*</bind3>*/;
 
-        /*<bind5>*/igoo.M(obj[12], /*<bind4>*/obj[123]/*</bind4>*/)/*</bind5>*/;
-    }
+                        /*<bind5>*/igoo.M(obj[12], /*<bind4>*/obj[123]/*</bind4>*/)/*</bind5>*/;
+                    }
 
-    static void EH(AN.S s) { }
-}
-";
+                    static void EH(AN.S s) { }
+                }
+                """;
 
             var comp1 = CreateCompilation(src1);
 
@@ -183,49 +187,51 @@ static void EH(AN.S s) { }
         [Fact]
         public void M2MMultiTargetingMsCorLib01()
         {
-            var src1 = @"using System;
-using System.IO;
+            var src1 = """
+                using System;
+                using System.IO;
 
-public class A
-{
-    public FileInfo GetFileInfo(string path)
-    {
-        if (File.Exists(path))
-        {
-            return new FileInfo(path);
-        }
+                public class A
+                {
+                    public FileInfo GetFileInfo(string path)
+                    {
+                        if (File.Exists(path))
+                        {
+                            return new FileInfo(path);
+                        }
 
-        return null;
-    }
+                        return null;
+                    }
 
-    public void PrintInfo(Array ary, ref DateTime time)
-    {
-        if (ary != null)
-            Console.WriteLine(ary);
-        else
-            Console.WriteLine(""null"");
+                    public void PrintInfo(Array ary, ref DateTime time)
+                    {
+                        if (ary != null)
+                            Console.WriteLine(ary);
+                        else
+                            Console.WriteLine("null");
 
-        time = DateTime.Now;
-    }
-}
-";
+                        time = DateTime.Now;
+                    }
+                }
+                """;
 
-            var src2 = @"using System;
+            var src2 = """
+                using System;
 
-class Test
-{
-    static void Main()
-    {
-        var a = new A();
-        var fi = a.GetFileInfo(null);
-        Console.WriteLine(fi);
+                class Test
+                {
+                    static void Main()
+                    {
+                        var a = new A();
+                        var fi = a.GetFileInfo(null);
+                        Console.WriteLine(fi);
 
-        var dt = DateTime.Now;
-        var ary = Array.CreateInstance(typeof(string), 2);
-        a.PrintInfo(ary, ref dt);
-    }
-}
-";
+                        var dt = DateTime.Now;
+                        var ary = Array.CreateInstance(typeof(string), 2);
+                        a.PrintInfo(ary, ref dt);
+                    }
+                }
+                """;
             var comp20 = (Compilation)CreateEmptyCompilation(src1, new[] { Net40.mscorlib });
 
             // "Compilation 2 Assembly"
@@ -277,53 +283,55 @@ static void Main()
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/546255")]
         public void M2MMultiTargetingMsCorLib02()
         {
-            var src1 = @"using System;
-namespace Mscorlib20
-{
-    public interface IGoo
-    {
-        // interface
-        IDisposable Prop { get; set; }
-        // class
-        Exception this[ArgumentException t] { get; }
-    }
+            var src1 = """
+                using System;
+                namespace Mscorlib20
+                {
+                    public interface IGoo
+                    {
+                        // interface
+                        IDisposable Prop { get; set; }
+                        // class
+                        Exception this[ArgumentException t] { get; }
+                    }
 
-    public class CGoo : IGoo
-    {
-        // enum
-        public DayOfWeek PublicField;
-        // delegate
-        public event System.Threading.ParameterizedThreadStart PublicEventField;
+                    public class CGoo : IGoo
+                    {
+                        // enum
+                        public DayOfWeek PublicField;
+                        // delegate
+                        public event System.Threading.ParameterizedThreadStart PublicEventField;
 
-        public IDisposable Prop { get; set; }
-        public Exception this[ArgumentException t] { get { return t; } }
-    }
-}
-";
+                        public IDisposable Prop { get; set; }
+                        public Exception this[ArgumentException t] { get { return t; } }
+                    }
+                }
+                """;
 
-            var src2 = @"using System;
-using N20 = Mscorlib20;
+            var src2 = """
+                using System;
+                using N20 = Mscorlib20;
 
-class Test
-{
-    public IDisposable M()
-    {
-        var obj = new N20::CGoo();
-        N20.IGoo igoo = obj;
+                class Test
+                {
+                    public IDisposable M()
+                    {
+                        var obj = new N20::CGoo();
+                        N20.IGoo igoo = obj;
 
-        /*<bind0>*/obj.PublicEventField/*</bind0>*/ += /*<bind1>*/MyEveHandler/*</bind1>*/;
-        var local = /*<bind2>*/igoo[null]/*</bind2>*/;
+                        /*<bind0>*/obj.PublicEventField/*</bind0>*/ += /*<bind1>*/MyEveHandler/*</bind1>*/;
+                        var local = /*<bind2>*/igoo[null]/*</bind2>*/;
 
-        if (/*<bind3>*/obj.PublicField /*</bind3>*/== DayOfWeek.Friday)
-        {
-            return /*<bind4>*/(obj as N20.IGoo).Prop/*</bind4>*/;
-        }
-        return null;
-    }
+                        if (/*<bind3>*/obj.PublicField /*</bind3>*/== DayOfWeek.Friday)
+                        {
+                            return /*<bind4>*/(obj as N20.IGoo).Prop/*</bind4>*/;
+                        }
+                        return null;
+                    }
 
-    public void MyEveHandler(object o) { }
-}
-";
+                    public void MyEveHandler(object o) { }
+                }
+                """;
             var comp20 = CreateEmptyCompilation(src1, new[] { Net40.mscorlib });
 
             // "Compilation ref Compilation"
@@ -372,40 +380,42 @@ public void MyEveHandler(object o) { }
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/546255")]
         public void M2MMultiTargetingMsCorLib03()
         {
-            var src1 = @"using System;
-namespace Mscorlib20
-{
-    public interface IGoo
-    {
-        // interface
-        IDisposable Prop { get; set; }
-        // class
-        Exception this[ArgumentException t] { get; }
-    }
+            var src1 = """
+                using System;
+                namespace Mscorlib20
+                {
+                    public interface IGoo
+                    {
+                        // interface
+                        IDisposable Prop { get; set; }
+                        // class
+                        Exception this[ArgumentException t] { get; }
+                    }
 
-    public class CGoo : IGoo
-    {
-        // explicit
-        IDisposable IGoo.Prop { get; set; }
-        Exception IGoo.this[ArgumentException t] { get { return t; } }
-    }
-}
-";
+                    public class CGoo : IGoo
+                    {
+                        // explicit
+                        IDisposable IGoo.Prop { get; set; }
+                        Exception IGoo.this[ArgumentException t] { get { return t; } }
+                    }
+                }
+                """;
 
-            var src2 = @"using System;
-using N20 = Mscorlib20;
+            var src2 = """
+                using System;
+                using N20 = Mscorlib20;
 
-class Test
-{
-    public IDisposable M()
-    {
-        N20.IGoo igoo = new N20::CGoo();
+                class Test
+                {
+                    public IDisposable M()
+                    {
+                        N20.IGoo igoo = new N20::CGoo();
 
-        var local = /*<bind0>*/igoo[new ArgumentException()]/*</bind0>*/;
-        return /*<bind1>*/igoo.Prop/*</bind1>*/;
-    }
-}
-";
+                        var local = /*<bind0>*/igoo[new ArgumentException()]/*</bind0>*/;
+                        return /*<bind1>*/igoo.Prop/*</bind1>*/;
+                    }
+                }
+                """;
             var comp20 = CreateEmptyCompilation(src1, new[] { Net40.mscorlib });
 
             // "Compilation ref Compilation"
diff --git a/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyTests.cs b/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyTests.cs
index 3a6730bbad3b5..ed2b4194807c2 100644
--- a/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyTests.cs
+++ b/src/EditorFeatures/CSharpTest/SymbolKey/SymbolKeyTests.cs
@@ -22,12 +22,12 @@ public class SymbolKeyTests
         [Fact]
         public async Task FileType_01()
         {
-            var typeSource = @"
-file class C1
-{
-    public static void M() { }
-}
-";
+            var typeSource = """
+                file class C1
+                {
+                    public static void M() { }
+                }
+                """;
 
             var workspaceXml = @$"
 <Workspace>
@@ -130,23 +130,24 @@ public class Inner { }
         [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/45437")]
         public async Task TestGenericsAndNullability()
         {
-            var typeSource = @"
-#nullable enable
-
-    public sealed class ConditionalWeakTableTest<TKey, TValue> /*: IEnumerable<KeyValuePair<TKey, TValue>>, IEnumerable*/
-        where TKey : class
-        where TValue : class
-    {
-        public ConditionalWeakTable() { }
-        public void Add(TKey key, TValue value) { }
-        public void AddOrUpdate(TKey key, TValue value) { }
-        public void Clear() { }
-        public TValue GetOrCreateValue(TKey key) => default;
-        public TValue GetValue(TKey key, ConditionalWeakTableTest<TKey, TValue>.CreateValueCallback createValueCallback) => default;
-        public bool Remove(TKey key) => false;
-
-        public delegate TValue CreateValueCallback(TKey key);
-    }".Replace("<", "&lt;").Replace(">", "&gt;");
+            var typeSource = """
+                #nullable enable
+
+                    public sealed class ConditionalWeakTableTest<TKey, TValue> /*: IEnumerable<KeyValuePair<TKey, TValue>>, IEnumerable*/
+                        where TKey : class
+                        where TValue : class
+                    {
+                        public ConditionalWeakTable() { }
+                        public void Add(TKey key, TValue value) { }
+                        public void AddOrUpdate(TKey key, TValue value) { }
+                        public void Clear() { }
+                        public TValue GetOrCreateValue(TKey key) => default;
+                        public TValue GetValue(TKey key, ConditionalWeakTableTest<TKey, TValue>.CreateValueCallback createValueCallback) => default;
+                        public bool Remove(TKey key) => false;
+
+                        public delegate TValue CreateValueCallback(TKey key);
+                    }
+                """.Replace("<", "&lt;").Replace(">", "&gt;");
 
             var workspaceXml = @$"
 <Workspace>
@@ -209,24 +210,26 @@ public async Task ResolveBodySymbolsInMultiProjectReferencesToOriginalProjectAsy
 
             TestWorkspace GetWorkspace()
             {
-                var bodyProject = @"
-    <Project Language=""C#"" AssemblyName=""BodyProject"" CommonReferences=""true"">
-        <Document>
-class Program
-{
-    void M()
-    {
-        int local;
-    }
-}
-        </Document>
-    </Project>";
-                var referenceProject = @"
-    <Project Language=""C#"" AssemblyName=""ReferenceProject"" CommonReferences=""true"">
-        <ProjectReference>BodyProject</ProjectReference>
-        <Document>
-        </Document>
-    </Project>";
+                var bodyProject = """
+                        <Project Language="C#" AssemblyName="BodyProject" CommonReferences="true">
+                            <Document>
+                    class Program
+                    {
+                        void M()
+                        {
+                            int local;
+                        }
+                    }
+                            </Document>
+                        </Project>
+                    """;
+                var referenceProject = """
+                    <Project Language="C#" AssemblyName="ReferenceProject" CommonReferences="true">
+                        <ProjectReference>BodyProject</ProjectReference>
+                        <Document>
+                        </Document>
+                    </Project>
+                    """;
 
                 // Randomize the order of the projects in the workspace.
                 if (random.Next() % 2 == 0)
diff --git a/src/EditorFeatures/CSharpTest/TaskList/CSharpTaskListTests.cs b/src/EditorFeatures/CSharpTest/TaskList/CSharpTaskListTests.cs
index a6853a5d788b4..9e7583b335240 100644
--- a/src/EditorFeatures/CSharpTest/TaskList/CSharpTaskListTests.cs
+++ b/src/EditorFeatures/CSharpTest/TaskList/CSharpTaskListTests.cs
@@ -52,7 +52,9 @@ public async Task SingleLineTodoComment_Number(TestHost host)
         [Theory, CombinatorialData]
         public async Task SingleLineTodoComment_Quote(TestHost host)
         {
-            var code = @"// ""TODO test""";
+            var code = """
+                // "TODO test"
+                """;
 
             await TestAsync(code, host);
         }
@@ -132,12 +134,13 @@ public async Task MultilineTodoComment_Singleline_Document(TestHost host)
         [Theory, CombinatorialData]
         public async Task MultilineTodoComment_Multiline(TestHost host)
         {
-            var code = @"
-/* [|TODO: hello    |]
-        [|TODO: hello    |]
-[|TODO: hello    |]
-    * [|TODO: hello    |]
-    [|TODO: hello    |]*/";
+            var code = """
+                /* [|TODO: hello    |]
+                        [|TODO: hello    |]
+                [|TODO: hello    |]
+                    * [|TODO: hello    |]
+                    [|TODO: hello    |]*/
+                """;
 
             await TestAsync(code, host);
         }
@@ -145,12 +148,13 @@ public async Task MultilineTodoComment_Multiline(TestHost host)
         [Theory, CombinatorialData]
         public async Task MultilineTodoComment_Multiline_DocComment(TestHost host)
         {
-            var code = @"
-/** [|TODO: hello    |]
-        [|TODO: hello    |]
-[|TODO: hello    |]
-    * [|TODO: hello    |]
-    [|TODO: hello    |]*/";
+            var code = """
+                /** [|TODO: hello    |]
+                        [|TODO: hello    |]
+                [|TODO: hello    |]
+                    * [|TODO: hello    |]
+                    [|TODO: hello    |]*/
+                """;
 
             await TestAsync(code, host);
         }
@@ -158,11 +162,12 @@ public async Task MultilineTodoComment_Multiline_DocComment(TestHost host)
         [Theory, CombinatorialData]
         public async Task SinglelineDocumentComment_Multiline(TestHost host)
         {
-            var code = @"
-        /// <summary>
-        /// [|TODO : test       |]
-        /// </summary>
-        ///         [|UNDONE: test2             |]";
+            var code = """
+                /// <summary>
+                /// [|TODO : test       |]
+                /// </summary>
+                ///         [|UNDONE: test2             |]
+                """;
 
             await TestAsync(code, host);
         }
diff --git a/src/EditorFeatures/CSharpTest/TextStructureNavigation/TextStructureNavigatorTests.cs b/src/EditorFeatures/CSharpTest/TextStructureNavigation/TextStructureNavigatorTests.cs
index 7d040a8479799..0a17d01dd5034 100644
--- a/src/EditorFeatures/CSharpTest/TextStructureNavigation/TextStructureNavigatorTests.cs
+++ b/src/EditorFeatures/CSharpTest/TextStructureNavigation/TextStructureNavigatorTests.cs
@@ -55,9 +55,17 @@ public void EndOfFile()
         public void NewLine()
         {
             AssertExtent(
-                "class Class1 {$${|Insignificant:\r\n|}\r\n}");
-            AssertExtent(
-                "class Class1 {\r\n$${|Insignificant:\r\n|}}");
+                """
+                class Class1 {$${|Insignificant:
+                |}
+                }
+                """);
+            AssertExtent(
+                """
+                class Class1 {
+                $${|Insignificant:
+                |}}
+                """);
         }
 
         [WpfFact]
@@ -310,135 +318,169 @@ public void InterpolatedString1()
         public void TestRawStringContent()
         {
             AssertExtent(
-                @"string s = """"""
-    Hello
-        {|Significant:$$World|}!
-    :)
-    """""";");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        {|Significant:W$$orld|}!
-    :)
-    """""";");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        {|Significant:Wo$$rld|}!
-    :)
-    """""";");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        {|Significant:Wor$$ld|}!
-    :)
-    """""";");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        {|Significant:Worl$$d|}!
-    :)
-    """""";");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        World{|Significant:$$!|}
-    :)
-    """""";");
+                """"
+                string s = """
+                    Hello
+                        {|Significant:$$World|}!
+                    :)
+                    """;
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        {|Significant:W$$orld|}!
+                    :)
+                    """;
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        {|Significant:Wo$$rld|}!
+                    :)
+                    """;
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        {|Significant:Wor$$ld|}!
+                    :)
+                    """;
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        {|Significant:Worl$$d|}!
+                    :)
+                    """;
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        World{|Significant:$$!|}
+                    :)
+                    """;
+                """");
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/59581")]
         public void TestRawStringDelimeter1()
         {
             AssertExtent(
-                @"string s = {|Significant:$$""""""|}
-    Hello
-        World!
-    :)
-    """""";");
-
-            AssertExtent(
-                @"string s = {|Significant:""$$""""|}
-    Hello
-        World!
-    :)
-    """""";");
-
-            AssertExtent(
-                @"string s = {|Significant:""""$$""|}
-    Hello
-        World!
-    :)
-    """""";");
+                """"
+                string s = {|Significant:$$"""|}
+                    Hello
+                        World!
+                    :)
+                    """;
+                """");
+
+            AssertExtent(
+                """"
+                string s = {|Significant:"$$""|}
+                    Hello
+                        World!
+                    :)
+                    """;
+                """");
+
+            AssertExtent(
+                """"
+                string s = {|Significant:""$$"|}
+                    Hello
+                        World!
+                    :)
+                    """;
+                """");
         }
 
         [WpfFact, WorkItem("https://github.com/dotnet/roslyn/issues/59581")]
         public void TestRawStringDelimeter2()
         {
             AssertExtent(
-                @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:$$""""""|};");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:""$$""""|};");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:""""$$""|};");
+                """"
+                string s = """
+                    Hello
+                        World!
+                    :)
+                    {|Significant:$$"""|};
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        World!
+                    :)
+                    {|Significant:"$$""|};
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        World!
+                    :)
+                    {|Significant:""$$"|};
+                """");
         }
 
         [WpfFact]
         public void TestUtf8RawStringDelimeter()
         {
             AssertExtent(
-                @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:$$""""""u8|};");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:""$$""""u8|};");
-
-            AssertExtent(
-                @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:""""$$""u8|};");
-
-            AssertExtent(
-    @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:""""""$$u8|};");
-
-            AssertExtent(
-    @"string s = """"""
-    Hello
-        World!
-    :)
-    {|Significant:""""""u$$8|};");
+                """"
+                string s = """
+                    Hello
+                        World!
+                    :)
+                    {|Significant:$$"""u8|};
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        World!
+                    :)
+                    {|Significant:"$$""u8|};
+                """");
+
+            AssertExtent(
+                """"
+                string s = """
+                    Hello
+                        World!
+                    :)
+                    {|Significant:""$$"u8|};
+                """");
+
+            AssertExtent(
+    """"
+    string s = """
+        Hello
+            World!
+        :)
+        {|Significant:"""$$u8|};
+    """");
+
+            AssertExtent(
+    """"
+    string s = """
+        Hello
+            World!
+        :)
+        {|Significant:"""u$$8|};
+    """");
         }
 
         private static void TestNavigator(
@@ -496,15 +538,19 @@ public void GetSpanOfFirstChildTest()
         {
             // Go from 'class Class1 { }' to 'class'
             TestNavigator(
-@"class Class1
-{
-}", (n, s) => n.GetSpanOfFirstChild(s), 0, 16, 0, 5);
+                """
+                class Class1
+                {
+                }
+                """, (n, s) => n.GetSpanOfFirstChild(s), 0, 16, 0, 5);
 
             // Next operation should do nothing as we're at the bottom
             TestNavigator(
-@"class Class1
-{
-}", (n, s) => n.GetSpanOfFirstChild(s), 0, 5, 0, 5);
+                """
+                class Class1
+                {
+                }
+                """, (n, s) => n.GetSpanOfFirstChild(s), 0, 5, 0, 5);
         }
 
         [WpfFact]
@@ -512,9 +558,11 @@ public void GetSpanOfNextSiblingTest()
         {
             // Go from 'class' to 'Class1'
             TestNavigator(
-@"class Class1
-{
-}", (n, s) => n.GetSpanOfNextSibling(s), 0, 5, 6, 6);
+                """
+                class Class1
+                {
+                }
+                """, (n, s) => n.GetSpanOfNextSibling(s), 0, 5, 6, 6);
         }
 
         [WpfFact]
diff --git a/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.Delegate.cs b/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.Delegate.cs
index 2475fa900b7d2..d32d1c7c8392c 100644
--- a/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.Delegate.cs
+++ b/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.Delegate.cs
@@ -39,14 +39,16 @@ private async Task TestDelegateAsync(string text, string expectedType)
         public async Task TestDeclaration1()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    Func<int> q = [|here|];
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    Func<int> q = [|here|];
+                  }
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -55,15 +57,17 @@ void M()
         public async Task TestAssignment1()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    Func<int> f;
-    f = [|here|]
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    Func<int> f;
+                    f = [|here|]
+                  }
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -72,16 +76,18 @@ void M()
         public async Task TestArgument1()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    Bar([|here|]);
-  }
-
-  void Bar(Func<int> f);
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    Bar([|here|]);
+                  }
+
+                  void Bar(Func<int> f);
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -90,16 +96,18 @@ void M()
         public async Task TestConstructor1()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    new C([|here|]);
-  }
-
-  public C(Func<int> f);
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    new C([|here|]);
+                  }
+
+                  public C(Func<int> f);
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -108,14 +116,16 @@ void M()
         public async Task TestDelegateConstructor1()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    new Func<int>([|here|]);
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    new Func<int>([|here|]);
+                  }
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -124,14 +134,16 @@ void M()
         public async Task TestCastExpression1()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    (Func<int>)[|here|]
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    (Func<int>)[|here|]
+                  }
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -140,14 +152,16 @@ void M()
         public async Task TestCastExpression2()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    (Func<int>)([|here|]
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    (Func<int>)([|here|]
+                  }
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -156,14 +170,16 @@ void M()
         public async Task TestReturnFromMethod()
         {
             var text =
-@"using System;
-class C
-{
-  Func<int> M()
-  {
-    return [|here|]
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  Func<int> M()
+                  {
+                    return [|here|]
+                  }
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<int>");
         }
@@ -172,14 +188,16 @@ Func<int> M()
         public async Task TestInsideLambda1()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    Func<int,Func<string,bool>> f = i => [|here|]
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    Func<int,Func<string,bool>> f = i => [|here|]
+                  }
+                }
+                """;
 
             await TestDelegateAsync(text, "System.Func<string, bool>");
         }
diff --git a/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.cs b/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.cs
index 84a16d48f210e..79996aeefe54a 100644
--- a/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.cs
+++ b/src/EditorFeatures/CSharpTest/TypeInferrer/TypeInferrerTests.cs
@@ -46,22 +46,26 @@ protected override async Task TestWorkerAsync(Document document, TextSpan textSp
 
         private async Task TestInClassAsync(string text, string expectedType, TestMode mode)
         {
-            text = @"class C
-{
-    $
-}".Replace("$", text);
+            text = """
+                class C
+                {
+                    $
+                }
+                """.Replace("$", text);
             await TestAsync(text, expectedType, mode);
         }
 
         private async Task TestInMethodAsync(string text, string expectedType, TestMode mode)
         {
-            text = @"class C
-{
-    void M()
-    {
-        $
-    }
-}".Replace("$", text);
+            text = """
+                class C
+                {
+                    void M()
+                    {
+                        $
+                    }
+                }
+                """.Replace("$", text);
             await TestAsync(text, expectedType, mode);
         }
 
@@ -124,8 +128,10 @@ await TestInMethodAsync(
         public async Task TestVariableDeclaratorNullableReferenceType(TestMode mode)
         {
             await TestInMethodAsync(
-@"#nullable enable
-string? q = [|Goo()|];", "global::System.String?", mode);
+                """
+                #nullable enable
+                string? q = [|Goo()|];
+                """, "global::System.String?", mode);
         }
 
         [Fact]
@@ -139,16 +145,20 @@ await TestInMethodAsync(
         public async Task TestCoalesce2(TestMode mode)
         {
             await TestInMethodAsync(
-@"bool? b;
-var q = b ?? [|Goo()|];", "global::System.Boolean", mode);
+                """
+                bool? b;
+                var q = b ?? [|Goo()|];
+                """, "global::System.Boolean", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestCoalesce3(TestMode mode)
         {
             await TestInMethodAsync(
-@"string s;
-var q = s ?? [|Goo()|];", "global::System.String", mode);
+                """
+                string s;
+                var q = s ?? [|Goo()|];
+                """, "global::System.String", mode);
         }
 
         [Fact]
@@ -165,24 +175,30 @@ public async Task TestCoalesceWithErrorType()
             // a struct (where the question mark is legal) or a class (where it isn't). We'll thus avoid sticking question marks in this case.
             // https://github.com/dotnet/roslyn/issues/37852 tracks fixing this is a much fancier way.
             await TestInMethodAsync(
-@"ErrorType s;
-var q = [|Goo()|] ?? s;", "ErrorType", TestMode.Node);
+                """
+                ErrorType s;
+                var q = [|Goo()|] ?? s;
+                """, "ErrorType", TestMode.Node);
         }
 
         [Theory, CombinatorialData]
         public async Task TestBinaryExpression1(TestMode mode)
         {
             await TestInMethodAsync(
-@"string s;
-var q = s + [|Goo()|];", "global::System.String", mode);
+                """
+                string s;
+                var q = s + [|Goo()|];
+                """, "global::System.String", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestBinaryExpression2(TestMode mode)
         {
             await TestInMethodAsync(
-@"var s;
-var q = s || [|Goo()|];", "global::System.Boolean", mode);
+                """
+                var s;
+                var q = s || [|Goo()|];
+                """, "global::System.Boolean", mode);
         }
 
         [Theory, CombinatorialData]
@@ -225,44 +241,48 @@ await TestInMethodAsync(
         public async Task TestOverloadedConditionalLogicalOperatorsInferBool(TestMode mode)
         {
             await TestAsync(
-@"using System;
-
-class C
-{
-    public static C operator &(C c, C d)
-    {
-        return null;
-    }
-
-    public static bool operator true(C c)
-    {
-        return true;
-    }
+                """
+                using System;
 
-    public static bool operator false(C c)
-    {
-        return false;
-    }
-
-    static void Main(string[] args)
-    {
-        var c = new C() && [|Goo()|];
-    }
-}", "global::System.Boolean", mode);
+                class C
+                {
+                    public static C operator &(C c, C d)
+                    {
+                        return null;
+                    }
+
+                    public static bool operator true(C c)
+                    {
+                        return true;
+                    }
+
+                    public static bool operator false(C c)
+                    {
+                        return false;
+                    }
+
+                    static void Main(string[] args)
+                    {
+                        var c = new C() && [|Goo()|];
+                    }
+                }
+                """, "global::System.Boolean", mode);
         }
 
         [Theory, CombinatorialData]
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestConditionalLogicalOrOperatorAlwaysInfersBool(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = a || [|7|];
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = a || [|7|];
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
@@ -270,42 +290,48 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestConditionalLogicalAndOperatorAlwaysInfersBool(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = a && [|7|];
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = a && [|7|];
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrOperatorInference1()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = [|a|] | true;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = [|a|] | true;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", TestMode.Node);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrOperatorInference2()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = [|a|] | b | c || d;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = [|a|] | b | c || d;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", TestMode.Node);
         }
 
@@ -313,32 +339,36 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrOperatorInference3(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = a | b | [|c|] || d;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = a | b | [|c|] || d;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrOperatorInference4()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = Goo([|a|] | b);
-    }
-    static object Goo(Program p)
-    {
-        return p;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = Goo([|a|] | b);
+                    }
+                    static object Goo(Program p)
+                    {
+                        return p;
+                    }
+                }
+                """;
             await TestAsync(text, "Program", TestMode.Node);
         }
 
@@ -346,32 +376,36 @@ static object Goo(Program p)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrOperatorInference5(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = Goo([|a|] | b);
-    }
-    static object Goo(bool p)
-    {
-        return p;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = Goo([|a|] | b);
+                    }
+                    static object Goo(bool p)
+                    {
+                        return p;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrOperatorInference6()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if (([|x|] | y) != 0) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if (([|x|] | y) != 0) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Int32", TestMode.Node);
         }
 
@@ -379,42 +413,48 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrOperatorInference7(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if ([|x|] | y) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if ([|x|] | y) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndOperatorInference1()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = [|a|] & true;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = [|a|] & true;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", TestMode.Node);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndOperatorInference2()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = [|a|] & b & c && d;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = [|a|] & b & c && d;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", TestMode.Node);
         }
 
@@ -422,32 +462,36 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndOperatorInference3(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = a & b & [|c|] && d;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = a & b & [|c|] && d;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndOperatorInference4()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = Goo([|a|] & b);
-    }
-    static object Goo(Program p)
-    {
-        return p;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = Goo([|a|] & b);
+                    }
+                    static object Goo(Program p)
+                    {
+                        return p;
+                    }
+                }
+                """;
             await TestAsync(text, "Program", TestMode.Node);
         }
 
@@ -455,32 +499,36 @@ static object Goo(Program p)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndOperatorInference5(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = Goo([|a|] & b);
-    }
-    static object Goo(bool p)
-    {
-        return p;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = Goo([|a|] & b);
+                    }
+                    static object Goo(bool p)
+                    {
+                        return p;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndOperatorInference6()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if (([|x|] & y) != 0) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if (([|x|] & y) != 0) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Int32", TestMode.Node);
         }
 
@@ -488,42 +536,48 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndOperatorInference7(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if ([|x|] & y) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if ([|x|] & y) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorOperatorInference1()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = [|a|] ^ true;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = [|a|] ^ true;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", TestMode.Node);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorOperatorInference2()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = [|a|] ^ b ^ c && d;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = [|a|] ^ b ^ c && d;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", TestMode.Node);
         }
 
@@ -531,32 +585,36 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorOperatorInference3(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = a ^ b ^ [|c|] && d;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = a ^ b ^ [|c|] && d;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorOperatorInference4()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = Goo([|a|] ^ b);
-    }
-    static object Goo(Program p)
-    {
-        return p;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = Goo([|a|] ^ b);
+                    }
+                    static object Goo(Program p)
+                    {
+                        return p;
+                    }
+                }
+                """;
             await TestAsync(text, "Program", TestMode.Node);
         }
 
@@ -564,32 +622,36 @@ static object Goo(Program p)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorOperatorInference5(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        var x = Goo([|a|] ^ b);
-    }
-    static object Goo(bool p)
-    {
-        return p;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        var x = Goo([|a|] ^ b);
+                    }
+                    static object Goo(bool p)
+                    {
+                        return p;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
         [Fact, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorOperatorInference6()
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if (([|x|] ^ y) != 0) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if (([|x|] ^ y) != 0) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Int32", TestMode.Node);
         }
 
@@ -597,14 +659,16 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorOperatorInference7(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if ([|x|] ^ y) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if ([|x|] ^ y) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
@@ -612,14 +676,16 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrEqualsOperatorInference1(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if ([|x|] |= y) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if ([|x|] |= y) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
@@ -627,14 +693,16 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalOrEqualsOperatorInference2(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        int z = [|x|] |= y;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        int z = [|x|] |= y;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Int32", mode);
         }
 
@@ -642,14 +710,16 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndEqualsOperatorInference1(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if ([|x|] &= y) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if ([|x|] &= y) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
@@ -657,14 +727,16 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalAndEqualsOperatorInference2(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        int z = [|x|] &= y;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        int z = [|x|] &= y;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Int32", mode);
         }
 
@@ -672,14 +744,16 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorEqualsOperatorInference1(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        if ([|x|] ^= y) {}
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        if ([|x|] ^= y) {}
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
@@ -687,14 +761,16 @@ static void Main(string[] args)
         [WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/617633")]
         public async Task TestLogicalXorEqualsOperatorInference2(TestMode mode)
         {
-            var text = @"using System;
-class C
-{
-    static void Main(string[] args)
-    {
-        int z = [|x|] ^= y;
-    }
-}";
+            var text = """
+                using System;
+                class C
+                {
+                    static void Main(string[] args)
+                    {
+                        int z = [|x|] ^= y;
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Int32", mode);
         }
 
@@ -702,285 +778,333 @@ static void Main(string[] args)
         public async Task TestReturnInConstructor(TestMode mode)
         {
             await TestInClassAsync(
-@"C()
-{
-    return [|Goo()|];
-}", "void", mode);
+                """
+                C()
+                {
+                    return [|Goo()|];
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInDestructor(TestMode mode)
         {
             await TestInClassAsync(
-@"~C()
-{
-    return [|Goo()|];
-}", "void", mode);
+                """
+                ~C()
+                {
+                    return [|Goo()|];
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInMethod(TestMode mode)
         {
             await TestInClassAsync(
-@"int M()
-{
-    return [|Goo()|];
-}", "global::System.Int32", mode);
+                """
+                int M()
+                {
+                    return [|Goo()|];
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInMethodNullableReference(TestMode mode)
         {
             await TestInClassAsync(
-@"#nullable enable
-string? M()
-{
-    return [|Goo()|];
-}", "global::System.String?", mode);
+                """
+                #nullable enable
+                string? M()
+                {
+                    return [|Goo()|];
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInVoidMethod(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    return [|Goo()|];
-}", "void", mode);
+                """
+                void M()
+                {
+                    return [|Goo()|];
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskOfTMethod(TestMode mode)
         {
             await TestInClassAsync(
-@"async System.Threading.Tasks.Task<int> M()
-{
-    return [|Goo()|];
-}", "global::System.Int32", mode);
+                """
+                async System.Threading.Tasks.Task<int> M()
+                {
+                    return [|Goo()|];
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskOfTMethodNestedNullability(TestMode mode)
         {
             await TestInClassAsync(
-@"async System.Threading.Tasks.Task<string?> M()
-{
-    return [|Goo()|];
-}", "global::System.String?", mode);
+                """
+                async System.Threading.Tasks.Task<string?> M()
+                {
+                    return [|Goo()|];
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskMethod(TestMode mode)
         {
             await TestInClassAsync(
-@"async System.Threading.Tasks.Task M()
-{
-    return [|Goo()|];
-}", "void", mode);
+                """
+                async System.Threading.Tasks.Task M()
+                {
+                    return [|Goo()|];
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncVoidMethod(TestMode mode)
         {
             await TestInClassAsync(
-@"async void M()
-{
-    return [|Goo()|];
-}", "void", mode);
+                """
+                async void M()
+                {
+                    return [|Goo()|];
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInOperator(TestMode mode)
         {
             await TestInClassAsync(
-@"public static C operator ++(C c)
-{
-    return [|Goo()|];
-}", "global::C", mode);
+                """
+                public static C operator ++(C c)
+                {
+                    return [|Goo()|];
+                }
+                """, "global::C", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInConversionOperator(TestMode mode)
         {
             await TestInClassAsync(
-@"public static implicit operator int(C c)
-{
-    return [|Goo()|];
-}", "global::System.Int32", mode);
+                """
+                public static implicit operator int(C c)
+                {
+                    return [|Goo()|];
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInPropertyGetter(TestMode mode)
         {
             await TestInClassAsync(
-@"int P
-{
-    get
-    {
-        return [|Goo()|];
-    }
-}", "global::System.Int32", mode);
+                """
+                int P
+                {
+                    get
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInPropertyGetterNullableReference(TestMode mode)
         {
             await TestInClassAsync(
-@"#nullable enable
-string? P
-{
-    get
-    {
-        return [|Goo()|];
-    }
-}", "global::System.String?", mode);
+                """
+                #nullable enable
+                string? P
+                {
+                    get
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInPropertySetter(TestMode mode)
         {
             await TestInClassAsync(
-@"int P
-{
-    set
-    {
-        return [|Goo()|];
-    }
-}", "void", mode);
+                """
+                int P
+                {
+                    set
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInIndexerGetter(TestMode mode)
         {
             await TestInClassAsync(
-@"int this[int i]
-{
-    get
-    {
-        return [|Goo()|];
-    }
-}", "global::System.Int32", mode);
+                """
+                int this[int i]
+                {
+                    get
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInIndexerGetterNullableReference(TestMode mode)
         {
             await TestInClassAsync(
-@"#nullable enable
-string? this[int i]
-{
-    get
-    {
-        return [|Goo()|];
-    }
-}", "global::System.String?", mode);
+                """
+                #nullable enable
+                string? this[int i]
+                {
+                    get
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInIndexerSetter(TestMode mode)
         {
             await TestInClassAsync(
-@"int this[int i]
-{
-    set
-    {
-        return [|Goo()|];
-    }
-}", "void", mode);
+                """
+                int this[int i]
+                {
+                    set
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInEventAdder(TestMode mode)
         {
             await TestInClassAsync(
-@"event System.EventHandler E
-{
-    add
-    {
-        return [|Goo()|];
-    }
-    remove { }
-}", "void", mode);
+                """
+                event System.EventHandler E
+                {
+                    add
+                    {
+                        return [|Goo()|];
+                    }
+                    remove { }
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInEventRemover(TestMode mode)
         {
             await TestInClassAsync(
-@"event System.EventHandler E
-{
-    add { }
-    remove
-    {
-        return [|Goo()|];
-    }
-}", "void", mode);
+                """
+                event System.EventHandler E
+                {
+                    add { }
+                    remove
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    int F()
-    {
-        return [|Goo()|];
-    }
-}", "global::System.Int32", mode);
+                """
+                void M()
+                {
+                    int F()
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInLocalFunctionNullableReference(TestMode mode)
         {
             await TestInClassAsync(
-@"#nullable enable
-void M()
-{
-    string? F()
-    {
-        return [|Goo()|];
-    }
-}", "global::System.String?", mode);
+                """
+                #nullable enable
+                void M()
+                {
+                    string? F()
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskOfTLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    async System.Threading.Tasks.Task<int> F()
-    {
-        return [|Goo()|];
-    }
-}", "global::System.Int32", mode);
+                """
+                void M()
+                {
+                    async System.Threading.Tasks.Task<int> F()
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    async System.Threading.Tasks.Task F()
-    {
-        return [|Goo()|];
-    }
-}", "void", mode);
+                """
+                void M()
+                {
+                    async System.Threading.Tasks.Task F()
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncVoidLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    async void F()
-    {
-        return [|Goo()|];
-    }
-}", "void", mode);
+                """
+                void M()
+                {
+                    async void F()
+                    {
+                        return [|Goo()|];
+                    }
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1022,8 +1146,10 @@ await TestInClassAsync(
         public async Task TestExpressionBodiedAsyncTaskOfTMethodNullableReference(TestMode mode)
         {
             await TestInClassAsync(
-@"#nullable enable
-async System.Threading.Tasks.Task<string?> M() => [|Goo()|];", "global::System.String?", mode);
+                """
+                #nullable enable
+                async System.Threading.Tasks.Task<string?> M() => [|Goo()|];
+                """, "global::System.String?", mode);
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
@@ -1114,40 +1240,48 @@ await TestInClassAsync(
         public async Task TestExpressionBodiedLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    int F() => [|Goo()|];
-}", "global::System.Int32", mode);
+                """
+                void M()
+                {
+                    int F() => [|Goo()|];
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
         public async Task TestExpressionBodiedAsyncTaskOfTLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    async System.Threading.Tasks.Task<int> F() => [|Goo()|];
-}", "global::System.Int32", mode);
+                """
+                void M()
+                {
+                    async System.Threading.Tasks.Task<int> F() => [|Goo()|];
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/27647"), CombinatorialData]
         public async Task TestExpressionBodiedAsyncTaskLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    async System.Threading.Tasks.Task F() => [|Goo()|];
-}", "void", mode);
+                """
+                void M()
+                {
+                    async System.Threading.Tasks.Task F() => [|Goo()|];
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestExpressionBodiedAsyncVoidLocalFunction(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    async void F() => [|Goo()|];
-}", "void", mode);
+                """
+                void M()
+                {
+                    async void F() => [|Goo()|];
+                }
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1221,18 +1355,20 @@ public async Task TestYieldReturnInvalidTypeInMethod([CombinatorialValues("int[]
         public async Task TestYieldReturnInLocalFunction(TestMode mode)
         {
             var markup =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-    void M()
-    {
-        IEnumerable<int> F()
-        {
-            yield return [|abc|]
-        }
-    }
-}";
+                class C
+                {
+                    void M()
+                    {
+                        IEnumerable<int> F()
+                        {
+                            yield return [|abc|]
+                        }
+                    }
+                }
+                """;
             await TestAsync(markup, "global::System.Int32", mode);
         }
 
@@ -1240,18 +1376,20 @@ IEnumerable<int> F()
         public async Task TestYieldReturnInPropertyGetter(TestMode mode)
         {
             var markup =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-    IEnumerable<int> P
-    {
-        get
-        {
-            yield return [|abc|]
-        }
-    }
-}";
+                class C
+                {
+                    IEnumerable<int> P
+                    {
+                        get
+                        {
+                            yield return [|abc|]
+                        }
+                    }
+                }
+                """;
             await TestAsync(markup, "global::System.Int32", mode);
         }
 
@@ -1259,18 +1397,20 @@ IEnumerable<int> P
         public async Task TestYieldReturnInPropertySetter(TestMode mode)
         {
             var markup =
-@"using System.Collections.Generic;
-
-class C
-{
-    IEnumerable<int> P
-    {
-        set
-        {
-            yield return [|abc|]
-        }
-    }
-}";
+                """
+                using System.Collections.Generic;
+
+                class C
+                {
+                    IEnumerable<int> P
+                    {
+                        set
+                        {
+                            yield return [|abc|]
+                        }
+                    }
+                }
+                """;
             await TestAsync(markup, "global::System.Object", mode);
         }
 
@@ -1285,153 +1425,183 @@ await TestAsync(
         public async Task TestReturnInSimpleLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<string, int> f = s =>
-{
-    return [|Goo()|];
-};", "global::System.Int32", mode);
+                """
+                System.Func<string, int> f = s =>
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInParenthesizedLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<int> f = () =>
-{
-    return [|Goo()|];
-};", "global::System.Int32", mode);
+                """
+                System.Func<int> f = () =>
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInLambdaWithNullableReturn(TestMode mode)
         {
             await TestInMethodAsync(
-@"#nullable enable
-System.Func<string, string?> f = s =>
-{
-    return [|Goo()|];
-};", "global::System.String?", mode);
+                """
+                #nullable enable
+                System.Func<string, string?> f = s =>
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAnonymousMethod(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<int> f = delegate ()
-{
-    return [|Goo()|];
-};", "global::System.Int32", mode);
+                """
+                System.Func<int> f = delegate ()
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAnonymousMethodWithNullableReturn(TestMode mode)
         {
             await TestInMethodAsync(
-@"#nullable enable
-System.Func<string?> f = delegate ()
-{
-    return [|Goo()|];
-};", "global::System.String?", mode);
+                """
+                #nullable enable
+                System.Func<string?> f = delegate ()
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.String?", mode);
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/4486"), CombinatorialData]
         public async Task TestReturnInAsyncTaskOfTSimpleLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<string, System.Threading.Tasks.Task<int>> f = async s =>
-{
-    return [|Goo()|];
-};", "global::System.Int32", mode);
+                """
+                System.Func<string, System.Threading.Tasks.Task<int>> f = async s =>
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.Int32", mode);
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/4486"), CombinatorialData]
         public async Task TestReturnInAsyncTaskOfTParenthesizedLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<System.Threading.Tasks.Task<int>> f = async () =>
-{
-    return [|Goo()|];
-};", "global::System.Int32", mode);
+                """
+                System.Func<System.Threading.Tasks.Task<int>> f = async () =>
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.Int32", mode);
         }
 
         [Theory, WorkItem("https://github.com/dotnet/roslyn/issues/4486"), CombinatorialData]
         public async Task TestReturnInAsyncTaskOfTAnonymousMethod(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<System.Threading.Tasks.Task<int>> f = async delegate ()
-{
-    return [|Goo()|];
-};", "global::System.Int32", mode);
+                """
+                System.Func<System.Threading.Tasks.Task<int>> f = async delegate ()
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskOfTAnonymousMethodWithNullableReference(TestMode mode)
         {
             await TestInMethodAsync(
-@"#nullable enable
-System.Func<System.Threading.Tasks.Task<string?>> f = async delegate ()
-{
-    return [|Goo()|];
-};", "global::System.String?", mode);
+                """
+                #nullable enable
+                System.Func<System.Threading.Tasks.Task<string?>> f = async delegate ()
+                {
+                    return [|Goo()|];
+                };
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskSimpleLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<string, System.Threading.Tasks.Task> f = async s =>
-{
-    return [|Goo()|];
-};", "void", mode);
+                """
+                System.Func<string, System.Threading.Tasks.Task> f = async s =>
+                {
+                    return [|Goo()|];
+                };
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskParenthesizedLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<System.Threading.Tasks.Task> f = async () =>
-{
-    return [|Goo()|];
-};", "void", mode);
+                """
+                System.Func<System.Threading.Tasks.Task> f = async () =>
+                {
+                    return [|Goo()|];
+                };
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncTaskAnonymousMethod(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Func<System.Threading.Tasks.Task> f = async delegate ()
-{
-    return [|Goo()|];
-};", "void", mode);
+                """
+                System.Func<System.Threading.Tasks.Task> f = async delegate ()
+                {
+                    return [|Goo()|];
+                };
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncVoidSimpleLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Action<string> f = async s =>
-{
-    return [|Goo()|];
-};", "void", mode);
+                """
+                System.Action<string> f = async s =>
+                {
+                    return [|Goo()|];
+                };
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncVoidParenthesizedLambda(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Action f = async () =>
-{
-    return [|Goo()|];
-};", "void", mode);
+                """
+                System.Action f = async () =>
+                {
+                    return [|Goo()|];
+                };
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestReturnInAsyncVoidAnonymousMethod(TestMode mode)
         {
             await TestInMethodAsync(
-@"System.Action f = async delegate ()
-{
-    return [|Goo()|];
-};", "void", mode);
+                """
+                System.Action f = async delegate ()
+                {
+                    return [|Goo()|];
+                };
+                """, "void", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1467,8 +1637,10 @@ await TestInMethodAsync(
         public async Task TestAsyncTaskOfTSimpleLambdaWithNullableReturn(TestMode mode)
         {
             await TestInMethodAsync(
-@"#nullable enable
-System.Func<string, System.Threading.Tasks.Task<string?>> f = async s => [|Goo()|];", "global::System.String?", mode);
+                """
+                #nullable enable
+                System.Func<string, System.Threading.Tasks.Task<string?>> f = async s => [|Goo()|];
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1549,9 +1721,11 @@ public async Task TestDo(TestMode mode)
         public async Task TestFor1(TestMode mode)
         {
             await TestInMethodAsync(
-@"for (int i = 0; [|Goo()|];
+                """
+                for (int i = 0; [|Goo()|];
 
-i++) { }", "global::System.Boolean", mode);
+                i++) { }
+                """, "global::System.Boolean", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1566,8 +1740,10 @@ public async Task TestFor3(TestMode mode)
         public async Task TestForNullableReference(TestMode mode)
         {
             await TestInMethodAsync(
-@"#nullable enable
-for (string? s = [|Goo()|]; ; ) { }", "global::System.String?", mode);
+                """
+                #nullable enable
+                for (string? s = [|Goo()|]; ; ) { }
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1590,8 +1766,10 @@ public async Task TestForEach(TestMode mode)
         public async Task TestForEachNullableElements(TestMode mode)
         {
             await TestInMethodAsync(
-@"#nullable enable
-foreach (string? v in [|Goo()|]) { }", "global::System.Collections.Generic.IEnumerable<global::System.String?>", mode);
+                """
+                #nullable enable
+                foreach (string? v in [|Goo()|]) { }
+                """, "global::System.Collections.Generic.IEnumerable<global::System.String?>", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1659,60 +1837,70 @@ await TestInMethodAsync(
         public async Task TestMethodCall2(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    Bar([|Goo()|]);
-}
+                """
+                void M()
+                {
+                    Bar([|Goo()|]);
+                }
 
-void Bar(int i);", "global::System.Int32", mode);
+                void Bar(int i);
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestMethodCall3(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    Bar([|Goo()|]);
-}
+                """
+                void M()
+                {
+                    Bar([|Goo()|]);
+                }
 
-void Bar();", "global::System.Object", mode);
+                void Bar();
+                """, "global::System.Object", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestMethodCall4(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    Bar([|Goo()|]);
-}
+                """
+                void M()
+                {
+                    Bar([|Goo()|]);
+                }
 
-void Bar(int i, string s);", "global::System.Int32", mode);
+                void Bar(int i, string s);
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestMethodCall5(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    Bar(s: [|Goo()|]);
-}
+                """
+                void M()
+                {
+                    Bar(s: [|Goo()|]);
+                }
 
-void Bar(int i, string s);", "global::System.String", mode);
+                void Bar(int i, string s);
+                """, "global::System.String", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestMethodCallNullableReference(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    Bar([|Goo()|]);
-}
+                """
+                void M()
+                {
+                    Bar([|Goo()|]);
+                }
 
-void Bar(string? s);", "global::System.String?", mode);
+                void Bar(string? s);
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1726,159 +1914,181 @@ await TestInMethodAsync(
         public async Task TestConstructorCall2(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    new C([|Goo()|]);
-}
+                """
+                void M()
+                {
+                    new C([|Goo()|]);
+                }
 
-C(int i)
-{
-}", "global::System.Int32", mode);
+                C(int i)
+                {
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestConstructorCall3(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    new C([|Goo()|]);
-}
+                """
+                void M()
+                {
+                    new C([|Goo()|]);
+                }
 
-C()
-{
-}", "global::System.Object", mode);
+                C()
+                {
+                }
+                """, "global::System.Object", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestConstructorCall4(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    new C([|Goo()|]);
-}
+                """
+                void M()
+                {
+                    new C([|Goo()|]);
+                }
 
-C(int i, string s)
-{
-}", "global::System.Int32", mode);
+                C(int i, string s)
+                {
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestConstructorCall5(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    new C(s: [|Goo()|]);
-}
+                """
+                void M()
+                {
+                    new C(s: [|Goo()|]);
+                }
 
-C(int i, string s)
-{
-}", "global::System.String", mode);
+                C(int i, string s)
+                {
+                }
+                """, "global::System.String", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestConstructorCallNullableParameter(TestMode mode)
         {
             await TestInClassAsync(
-@"#nullable enable
+                """
+                #nullable enable
 
-void M()
-{
-    new C([|Goo()|]);
-}
+                void M()
+                {
+                    new C([|Goo()|]);
+                }
 
-C(string? s)
-{
-}", "global::System.String?", mode);
+                C(string? s)
+                {
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112"), CombinatorialData]
         public async Task TestThisConstructorInitializer1(TestMode mode)
         {
             await TestAsync(
-@"class MyClass
-{
-    public MyClass(int x) : this([|test|])
-    {
-    }
-}", "global::System.Int32", mode);
+                """
+                class MyClass
+                {
+                    public MyClass(int x) : this([|test|])
+                    {
+                    }
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112"), CombinatorialData]
         public async Task TestThisConstructorInitializer2(TestMode mode)
         {
             await TestAsync(
-@"class MyClass
-{
-    public MyClass(int x, string y) : this(5, [|test|])
-    {
-    }
-}", "global::System.String", mode);
+                """
+                class MyClass
+                {
+                    public MyClass(int x, string y) : this(5, [|test|])
+                    {
+                    }
+                }
+                """, "global::System.String", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestThisConstructorInitializerNullableParameter(TestMode mode)
         {
             await TestAsync(
-@"#nullable enable
+                """
+                #nullable enable
 
-class MyClass
-{
-    public MyClass(string? y) : this([|test|])
-    {
-    }
-}", "global::System.String?", mode);
+                class MyClass
+                {
+                    public MyClass(string? y) : this([|test|])
+                    {
+                    }
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, WorkItem("http://vstfdevdiv:8080/DevDiv2/DevDiv/_workitems/edit/858112"), CombinatorialData]
         public async Task TestBaseConstructorInitializer(TestMode mode)
         {
             await TestAsync(
-@"class B
-{
-    public B(int x)
-    {
-    }
-}
+                """
+                class B
+                {
+                    public B(int x)
+                    {
+                    }
+                }
 
-class D : B
-{
-    public D() : base([|test|])
-    {
-    }
-}", "global::System.Int32", mode);
+                class D : B
+                {
+                    public D() : base([|test|])
+                    {
+                    }
+                }
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestBaseConstructorInitializerNullableParameter(TestMode mode)
         {
             await TestAsync(
-@"#nullable enable
+                """
+                #nullable enable
 
-class B
-{
-    public B(string? x)
-    {
-    }
-}
+                class B
+                {
+                    public B(string? x)
+                    {
+                    }
+                }
 
-class D : B
-{
-    public D() : base([|test|])
-    {
-    }
-}", "global::System.String?", mode);
+                class D : B
+                {
+                    public D() : base([|test|])
+                    {
+                    }
+                }
+                """, "global::System.String?", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestIndexAccess1(TestMode mode)
         {
             await TestInMethodAsync(
-@"string[] i;
+                """
+                string[] i;
 
-i[[|Goo()|]];", "global::System.Int32", mode);
+                i[[|Goo()|]];
+                """, "global::System.Int32", mode);
         }
 
         [Theory, CombinatorialData]
@@ -1889,51 +2099,59 @@ public async Task TestIndexerCall1(TestMode mode)
         public async Task TestIndexerCall2(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    this[[|Goo()|]];
-}
+                """
+                void M()
+                {
+                    this[[|Goo()|]];
+                }
 
-int this[long i] { get; }", "global::System.Int64", mode);
+                int this[long i] { get; }
+                """, "global::System.Int64", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestIndexerCall3(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    this[42, [|Goo()|]];
-}
+                """
+                void M()
+                {
+                    this[42, [|Goo()|]];
+                }
 
-int this[int i, string s] { get; }", "global::System.String", mode);
+                int this[int i, string s] { get; }
+                """, "global::System.String", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestIndexerCall5(TestMode mode)
         {
             await TestInClassAsync(
-@"void M()
-{
-    this[s: [|Goo()|]];
-}
+                """
+                void M()
+                {
+                    this[s: [|Goo()|]];
+                }
 
-int this[int i, string s] { get; }", "global::System.String", mode);
+                int this[int i, string s] { get; }
+                """, "global::System.String", mode);
         }
 
         [Theory, CombinatorialData]
         public async Task TestArrayInitializerInImplicitArrayCreationSimple(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       var a = new[] { 1, [|2|] };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                       var a = new[] { 1, [|2|] };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -1942,18 +2160,20 @@ void M()
         public async Task TestArrayInitializerInImplicitArrayCreation1(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       var a = new[] { Bar(), [|Goo()|] };
-  }
+                class C
+                {
+                  void M()
+                  {
+                       var a = new[] { Bar(), [|Goo()|] };
+                  }
 
-  int Bar() { return 1; }
-  int Goo() { return 2; }
-}";
+                  int Bar() { return 1; }
+                  int Goo() { return 2; }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -1962,17 +2182,19 @@ void M()
         public async Task TestArrayInitializerInImplicitArrayCreation2(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       var a = new[] { Bar(), [|Goo()|] };
-  }
+                class C
+                {
+                  void M()
+                  {
+                       var a = new[] { Bar(), [|Goo()|] };
+                  }
 
-  int Bar() { return 1; }
-}";
+                  int Bar() { return 1; }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -1981,15 +2203,17 @@ void M()
         public async Task TestArrayInitializerInImplicitArrayCreation3(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       var a = new[] { Bar(), [|Goo()|] };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                       var a = new[] { Bar(), [|Goo()|] };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Object", mode);
         }
@@ -1998,19 +2222,21 @@ void M()
         public async Task TestArrayInitializerInImplicitArrayCreationInferredAsNullable(TestMode mode)
         {
             var text =
-@"#nullable enable
+                """
+                #nullable enable
 
-using System.Collections.Generic;
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       var a = new[] { Bar(), [|Goo()|] };
-  }
+                class C
+                {
+                  void M()
+                  {
+                       var a = new[] { Bar(), [|Goo()|] };
+                  }
 
-  object? Bar() { return null; }
-}";
+                  object? Bar() { return null; }
+                }
+                """;
 
             await TestAsync(text, "global::System.Object?", mode);
         }
@@ -2019,15 +2245,17 @@ void M()
         public async Task TestArrayInitializerInEqualsValueClauseSimple(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       int[] a = { 1, [|2|] };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                       int[] a = { 1, [|2|] };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -2036,17 +2264,19 @@ void M()
         public async Task TestArrayInitializerInEqualsValueClause(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       int[] a = { Bar(), [|Goo()|] };
-  }
+                class C
+                {
+                  void M()
+                  {
+                       int[] a = { Bar(), [|Goo()|] };
+                  }
 
-  int Bar() { return 1; }
-}";
+                  int Bar() { return 1; }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -2055,17 +2285,19 @@ void M()
         public async Task TestArrayInitializerInEqualsValueClauseNullableElement(TestMode mode)
         {
             var text =
-@"#nullable enable
+                """
+                #nullable enable
 
-using System.Collections.Generic;
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-       string?[] a = { [|Goo()|] };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                       string?[] a = { [|Goo()|] };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.String?", mode);
         }
@@ -2075,15 +2307,17 @@ void M()
         public async Task TestCollectionInitializer1(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-    new List<int>() { [|Goo()|] };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                    new List<int>() { [|Goo()|] };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -2092,17 +2326,19 @@ void M()
         public async Task TestCollectionInitializerNullableElement(TestMode mode)
         {
             var text =
-@"#nullable enable
+                """
+                #nullable enable
 
-using System.Collections.Generic;
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-    new List<string?>() { [|Goo()|] };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                    new List<string?>() { [|Goo()|] };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.String?", mode);
         }
@@ -2112,16 +2348,17 @@ void M()
         public async Task TestCollectionInitializer2(TestMode mode)
         {
             var text =
-@"
-using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-    new Dictionary<int,string>() { { [|Goo()|], """" } };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                    new Dictionary<int,string>() { { [|Goo()|], "" } };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -2131,16 +2368,17 @@ void M()
         public async Task TestCollectionInitializer3(TestMode mode)
         {
             var text =
-@"
-using System.Collections.Generic;
+                """
+                using System.Collections.Generic;
 
-class C
-{
-  void M()
-  {
-    new Dictionary<int,string>() { { 0, [|Goo()|] } };
-  }
-}";
+                class C
+                {
+                  void M()
+                  {
+                    new Dictionary<int,string>() { { 0, [|Goo()|] } };
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.String", mode);
         }
@@ -2149,21 +2387,23 @@ void M()
         public async Task TestCustomCollectionInitializerAddMethod1()
         {
             var text =
-@"class C : System.Collections.IEnumerable
-{
-    void M()
-    {
-        var x = new C() { [|a|] };
-    }
-
-    void Add(int i) { }
-    void Add(string s, bool b) { }
-
-    public System.Collections.IEnumerator GetEnumerator()
-    {
-        throw new System.NotImplementedException();
-    }
-}";
+                """
+                class C : System.Collections.IEnumerable
+                {
+                    void M()
+                    {
+                        var x = new C() { [|a|] };
+                    }
+
+                    void Add(int i) { }
+                    void Add(string s, bool b) { }
+
+                    public System.Collections.IEnumerator GetEnumerator()
+                    {
+                        throw new System.NotImplementedException();
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", TestMode.Node);
         }
@@ -2173,21 +2413,23 @@ public System.Collections.IEnumerator GetEnumerator()
         public async Task TestCustomCollectionInitializerAddMethod2(TestMode mode)
         {
             var text =
-@"class C : System.Collections.IEnumerable
-{
-    void M()
-    {
-        var x = new C() { { ""test"", [|b|] } };
-    }
-
-    void Add(int i) { }
-    void Add(string s, bool b) { }
-
-    public System.Collections.IEnumerator GetEnumerator()
-    {
-        throw new System.NotImplementedException();
-    }
-}";
+                """
+                class C : System.Collections.IEnumerable
+                {
+                    void M()
+                    {
+                        var x = new C() { { "test", [|b|] } };
+                    }
+
+                    void Add(int i) { }
+                    void Add(string s, bool b) { }
+
+                    public System.Collections.IEnumerator GetEnumerator()
+                    {
+                        throw new System.NotImplementedException();
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::System.Boolean", mode);
         }
@@ -2197,21 +2439,23 @@ public System.Collections.IEnumerator GetEnumerator()
         public async Task TestCustomCollectionInitializerAddMethod3(TestMode mode)
         {
             var text =
-@"class C : System.Collections.IEnumerable
-{
-    void M()
-    {
-        var x = new C() { { [|s|], true } };
-    }
-
-    void Add(int i) { }
-    void Add(string s, bool b) { }
-
-    public System.Collections.IEnumerator GetEnumerator()
-    {
-        throw new System.NotImplementedException();
-    }
-}";
+                """
+                class C : System.Collections.IEnumerable
+                {
+                    void M()
+                    {
+                        var x = new C() { { [|s|], true } };
+                    }
+
+                    void Add(int i) { }
+                    void Add(string s, bool b) { }
+
+                    public System.Collections.IEnumerator GetEnumerator()
+                    {
+                        throw new System.NotImplementedException();
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::System.String", mode);
         }
@@ -2220,21 +2464,23 @@ public System.Collections.IEnumerator GetEnumerator()
         public async Task TestCustomCollectionInitializerAddMethodWithNullableParameter(TestMode mode)
         {
             var text =
-@"class C : System.Collections.IEnumerable
-{
-    void M()
-    {
-        var x = new C() { { ""test"", [|s|] } };
-    }
-
-    void Add(int i) { }
-    void Add(string s, string? s2) { }
-
-    public System.Collections.IEnumerator GetEnumerator()
-    {
-        throw new System.NotImplementedException();
-    }
-}";
+                """
+                class C : System.Collections.IEnumerable
+                {
+                    void M()
+                    {
+                        var x = new C() { { "test", [|s|] } };
+                    }
+
+                    void Add(int i) { }
+                    void Add(string s, string? s2) { }
+
+                    public System.Collections.IEnumerator GetEnumerator()
+                    {
+                        throw new System.NotImplementedException();
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::System.String?", mode);
         }
@@ -2243,14 +2489,15 @@ public System.Collections.IEnumerator GetEnumerator()
         public async Task TestArrayInference1()
         {
             var text =
-@"
-class A
-{
-    void Goo()
-    {
-        A[] x = new [|C|][] { };
-    }
-}";
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        A[] x = new [|C|][] { };
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::A", TestMode.Node);
         }
@@ -2259,14 +2506,15 @@ void Goo()
         public async Task TestArrayInference1_Position()
         {
             var text =
-@"
-class A
-{
-    void Goo()
-    {
-        A[] x = new [|C|][] { };
-    }
-}";
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        A[] x = new [|C|][] { };
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::A[]", TestMode.Position);
         }
@@ -2275,14 +2523,15 @@ void Goo()
         public async Task TestArrayInference2()
         {
             var text =
-@"
-class A
-{
-    void Goo()
-    {
-        A[][] x = new [|C|][][] { };
-    }
-}";
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        A[][] x = new [|C|][][] { };
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::A", TestMode.Node);
         }
@@ -2291,14 +2540,15 @@ void Goo()
         public async Task TestArrayInference2_Position()
         {
             var text =
-@"
-class A
-{
-    void Goo()
-    {
-        A[][] x = new [|C|][][] { };
-    }
-}";
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        A[][] x = new [|C|][][] { };
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::A[][]", TestMode.Position);
         }
@@ -2307,30 +2557,32 @@ void Goo()
         public async Task TestArrayInference3()
         {
             var text =
-@"
-class A
-{
-    void Goo()
-    {
-        A[][] x = new [|C|][] { };
-    }
-}";
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        A[][] x = new [|C|][] { };
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::A[]", TestMode.Node);
         }
 
         [Fact]
         public async Task TestArrayInference3_Position()
-        {
-            var text =
-@"
-class A
-{
-    void Goo()
-    {
-        A[][] x = new [|C|][] { };
-    }
-}";
+        {
+            var text =
+                """
+                class A
+                {
+                    void Goo()
+                    {
+                        A[][] x = new [|C|][] { };
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::A[][]", TestMode.Position);
         }
@@ -2339,15 +2591,16 @@ void Goo()
         public async Task TestArrayInference4(TestMode mode)
         {
             var text =
-@"
-using System;
-class A
-{
-    void Goo()
-    {
-        Func<int, int>[] x = new Func<int, int>[] { [|Bar()|] };
-    }
-}";
+                """
+                using System;
+                class A
+                {
+                    void Goo()
+                    {
+                        Func<int, int>[] x = new Func<int, int>[] { [|Bar()|] };
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::System.Func<global::System.Int32, global::System.Int32>", mode);
         }
@@ -2357,14 +2610,16 @@ void Goo()
         public async Task TestInsideLambda2(TestMode mode)
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-    Func<int,int> f = i => [|here|]
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    Func<int,int> f = i => [|here|]
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -2373,16 +2628,18 @@ void M()
         public async Task TestInsideLambdaNullableReturn(TestMode mode)
         {
             var text =
-@"#nullable enable
+                """
+                #nullable enable
 
-using System;
-class C
-{
-  void M()
-  {
-    Func<int, string?> f = i => [|here|]
-  }
-}";
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                    Func<int, string?> f = i => [|here|]
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.String?", mode);
         }
@@ -2392,13 +2649,15 @@ void M()
         public async Task TestPointer1(TestMode mode)
         {
             var text =
-@"class C
-{
-  void M(int* i)
-  {
-    var q = i[[|Goo()|]];
-  }
-}";
+                """
+                class C
+                {
+                  void M(int* i)
+                  {
+                    var q = i[[|Goo()|]];
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -2408,13 +2667,15 @@ void M(int* i)
         public async Task TestDynamic1(TestMode mode)
         {
             var text =
-@"class C
-{
-  void M(dynamic i)
-  {
-    var q = i[[|Goo()|]];
-  }
-}";
+                """
+                class C
+                {
+                  void M(dynamic i)
+                  {
+                    var q = i[[|Goo()|]];
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Int32", mode);
         }
@@ -2423,13 +2684,15 @@ void M(dynamic i)
         public async Task TestChecked1(TestMode mode)
         {
             var text =
-@"class C
-{
-  void M()
-  {
-    string q = checked([|Goo()|]);
-  }
-}";
+                """
+                class C
+                {
+                  void M()
+                  {
+                    string q = checked([|Goo()|]);
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.String", mode);
         }
@@ -2439,14 +2702,16 @@ void M()
         public async Task TestAwaitTaskOfT(TestMode mode)
         {
             var text =
-@"using System.Threading.Tasks;
-class C
-{
-  void M()
-  {
-    int x = await [|Goo()|];
-  }
-}";
+                """
+                using System.Threading.Tasks;
+                class C
+                {
+                  void M()
+                  {
+                    int x = await [|Goo()|];
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Threading.Tasks.Task<global::System.Int32>", mode);
         }
@@ -2455,16 +2720,18 @@ void M()
         public async Task TestAwaitTaskOfTNullableValue(TestMode mode)
         {
             var text =
-@"#nullable enable
+                """
+                #nullable enable
 
-using System.Threading.Tasks;
-class C
-{
-  void M()
-  {
-    string? x = await [|Goo()|];
-  }
-}";
+                using System.Threading.Tasks;
+                class C
+                {
+                  void M()
+                  {
+                    string? x = await [|Goo()|];
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Threading.Tasks.Task<global::System.String?>", mode);
         }
@@ -2474,14 +2741,16 @@ void M()
         public async Task TestAwaitTaskOfTaskOfT(TestMode mode)
         {
             var text =
-@"using System.Threading.Tasks;
-class C
-{
-  void M()
-  {
-    Task<int> x = await [|Goo()|];
-  }
-}";
+                """
+                using System.Threading.Tasks;
+                class C
+                {
+                  void M()
+                  {
+                    Task<int> x = await [|Goo()|];
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Threading.Tasks.Task<global::System.Threading.Tasks.Task<global::System.Int32>>", mode);
         }
@@ -2491,14 +2760,16 @@ void M()
         public async Task TestAwaitTask(TestMode mode)
         {
             var text =
-@"using System.Threading.Tasks;
-class C
-{
-  void M()
-  {
-    await [|Goo()|];
-  }
-}";
+                """
+                using System.Threading.Tasks;
+                class C
+                {
+                  void M()
+                  {
+                    await [|Goo()|];
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Threading.Tasks.Task", mode);
         }
@@ -2508,15 +2779,17 @@ void M()
         public async Task TestLockStatement(TestMode mode)
         {
             var text =
-@"class C
-{
-  void M()
-  {
-    lock([|Goo()|])
-    {
-    }
-  }
-}";
+                """
+                class C
+                {
+                  void M()
+                  {
+                    lock([|Goo()|])
+                    {
+                    }
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Object", mode);
         }
@@ -2526,15 +2799,17 @@ void M()
         public async Task TestAwaitExpressionInLockStatement(TestMode mode)
         {
             var text =
-@"class C
-{
-  async void M()
-  {
-    lock(await [|Goo()|])
-    {
-    }
-  }
-}";
+                """
+                class C
+                {
+                  async void M()
+                  {
+                    lock(await [|Goo()|])
+                    {
+                    }
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::System.Threading.Tasks.Task<global::System.Object>", mode);
         }
@@ -2544,15 +2819,17 @@ async void M()
         public async Task TestReturnFromAsyncTaskOfT(TestMode mode)
         {
             var markup =
-@"using System.Threading.Tasks;
-class Program
-{
-    async Task<int> M()
-    {
-        await Task.Delay(1);
-        return [|ab|]
-    }
-}";
+                """
+                using System.Threading.Tasks;
+                class Program
+                {
+                    async Task<int> M()
+                    {
+                        await Task.Delay(1);
+                        return [|ab|]
+                    }
+                }
+                """;
             await TestAsync(markup, "global::System.Int32", mode);
         }
 
@@ -2561,17 +2838,19 @@ async Task<int> M()
         public async Task TestAttributeArguments1(TestMode mode)
         {
             var markup =
-@"[A([|dd|], ee, Y = ff)]
-class AAttribute : System.Attribute
-{
-    public int X;
-    public string Y;
+                """
+                [A([|dd|], ee, Y = ff)]
+                class AAttribute : System.Attribute
+                {
+                    public int X;
+                    public string Y;
 
-    public AAttribute(System.DayOfWeek a, double b)
-    {
+                    public AAttribute(System.DayOfWeek a, double b)
+                    {
 
-    }
-}";
+                    }
+                }
+                """;
             await TestAsync(markup, "global::System.DayOfWeek", mode);
         }
 
@@ -2580,17 +2859,19 @@ public AAttribute(System.DayOfWeek a, double b)
         public async Task TestAttributeArguments2(TestMode mode)
         {
             var markup =
-@"[A(dd, [|ee|], Y = ff)]
-class AAttribute : System.Attribute
-{
-    public int X;
-    public string Y;
+                """
+                [A(dd, [|ee|], Y = ff)]
+                class AAttribute : System.Attribute
+                {
+                    public int X;
+                    public string Y;
 
-    public AAttribute(System.DayOfWeek a, double b)
-    {
+                    public AAttribute(System.DayOfWeek a, double b)
+                    {
 
-    }
-}";
+                    }
+                }
+                """;
             await TestAsync(markup, "global::System.Double", mode);
         }
 
@@ -2599,17 +2880,19 @@ public AAttribute(System.DayOfWeek a, double b)
         public async Task TestAttributeArguments3(TestMode mode)
         {
             var markup =
-@"[A(dd, ee, Y = [|ff|])]
-class AAttribute : System.Attribute
-{
-    public int X;
-    public string Y;
+                """
+                [A(dd, ee, Y = [|ff|])]
+                class AAttribute : System.Attribute
+                {
+                    public int X;
+                    public string Y;
 
-    public AAttribute(System.DayOfWeek a, double b)
-    {
+                    public AAttribute(System.DayOfWeek a, double b)
+                    {
 
-    }
-}";
+                    }
+                }
+                """;
             await TestAsync(markup, "global::System.String", mode);
         }
 
@@ -2618,21 +2901,23 @@ public AAttribute(System.DayOfWeek a, double b)
         public async Task TestReturnStatementWithinDelegateWithinAMethodCall(TestMode mode)
         {
             var text =
-@"using System;
+                """
+                using System;
 
-class Program
-{
-    delegate string A(int i);
+                class Program
+                {
+                    delegate string A(int i);
 
-    static void Main(string[] args)
-    {
-        B(delegate(int i) { return [|M()|]; });
-    }
+                    static void Main(string[] args)
+                    {
+                        B(delegate(int i) { return [|M()|]; });
+                    }
 
-    private static void B(A a)
-    {
-    }
-}";
+                    private static void B(A a)
+                    {
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::System.String", mode);
         }
@@ -2642,11 +2927,12 @@ private static void B(A a)
         public async Task TestCatchFilterClause(TestMode mode)
         {
             var text =
-@"
-try
-{ }
-catch (Exception) if ([|M()|])
-}";
+                """
+                try
+                { }
+                catch (Exception) if ([|M()|])
+                }
+                """;
             await TestInMethodAsync(text, "global::System.Boolean", mode);
         }
 
@@ -2655,11 +2941,12 @@ public async Task TestCatchFilterClause(TestMode mode)
         public async Task TestCatchFilterClause1(TestMode mode)
         {
             var text =
-@"
-try
-{ }
-catch (Exception) if ([|M|])
-}";
+                """
+                try
+                { }
+                catch (Exception) if ([|M|])
+                }
+                """;
             await TestInMethodAsync(text, "global::System.Boolean", mode);
         }
 
@@ -2667,11 +2954,12 @@ public async Task TestCatchFilterClause1(TestMode mode)
         public async Task TestCatchFilterClause2()
         {
             var text =
-@"
-try
-{ }
-catch (Exception) if ([|M|].N)
-}";
+                """
+                try
+                { }
+                catch (Exception) if ([|M|].N)
+                }
+                """;
             await TestInMethodAsync(text, "global::System.Object", TestMode.Node);
         }
 
@@ -2679,16 +2967,18 @@ public async Task TestCatchFilterClause2()
         public async Task TestAwaitExpressionWithChainingMethod()
         {
             var text =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-class C
-{
-    static async void T()
-    {
-        bool x = await [|M()|].ConfigureAwait(false);
-    }
-}";
+                class C
+                {
+                    static async void T()
+                    {
+                        bool x = await [|M()|].ConfigureAwait(false);
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Threading.Tasks.Task<global::System.Boolean>", TestMode.Node);
         }
 
@@ -2696,16 +2986,18 @@ static async void T()
         public async Task TestAwaitExpressionWithChainingMethod2()
         {
             var text =
-@"using System;
-using System.Threading.Tasks;
+                """
+                using System;
+                using System.Threading.Tasks;
 
-class C
-{
-    static async void T()
-    {
-        bool x = await [|M|].ContinueWith(a => { return true; }).ContinueWith(a => { return false; });
-    }
-}";
+                class C
+                {
+                    static async void T()
+                    {
+                        bool x = await [|M|].ContinueWith(a => { return true; }).ContinueWith(a => { return false; });
+                    }
+                }
+                """;
             await TestAsync(text, "global::System.Threading.Tasks.Task<global::System.Object>", TestMode.Node);
         }
 
@@ -2713,17 +3005,19 @@ static async void T()
         public async Task TestAwaitExpressionWithGenericMethod1()
         {
             var text =
-@"using System.Threading.Tasks;
+                """
+                using System.Threading.Tasks;
 
-public class C
-{
-    private async void M()
-    {
-        bool merged = await X([|Test()|]);
-    }
+                public class C
+                {
+                    private async void M()
+                    {
+                        bool merged = await X([|Test()|]);
+                    }
 
-    private async Task<T> X<T>(T t) { return t; }
-}";
+                    private async Task<T> X<T>(T t) { return t; }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", TestMode.Node);
         }
 
@@ -2732,17 +3026,19 @@ private async void M()
         public async Task TestAwaitExpressionWithGenericMethod2(TestMode mode)
         {
             var text =
-@"using System.Threading.Tasks;
+                """
+                using System.Threading.Tasks;
 
-public class C
-{
-    private async void M()
-    {
-        bool merged = await Task.Run(() => [|Test()|]);;
-    }
+                public class C
+                {
+                    private async void M()
+                    {
+                        bool merged = await Task.Run(() => [|Test()|]);;
+                    }
 
-    private async Task<T> X<T>(T t) { return t; }
-}";
+                    private async Task<T> X<T>(T t) { return t; }
+                }
+                """;
             await TestAsync(text, "global::System.Boolean", mode);
         }
 
@@ -2751,13 +3047,15 @@ private async void M()
         public async Task TestNullCoalescingOperator1(TestMode mode)
         {
             var text =
-    @"class C
-{
-    void M()
+    """
+    class C
     {
-        object z = [|a|] ?? null;
+        void M()
+        {
+            object z = [|a|] ?? null;
+        }
     }
-}";
+    """;
             // In position mode, we are inferring that the thing to the right is an object, because it's being assigned to a local of type object.
             // In node mode, we are inferring the node is an object? because it's to the left of the ??.
             await TestAsync(text, mode == TestMode.Node ? "global::System.Object?" : "global::System.Object", mode);
@@ -2768,13 +3066,15 @@ void M()
         public async Task TestNullCoalescingOperator2(TestMode mode)
         {
             var text =
-    @"class C
-{
-    void M()
+    """
+    class C
     {
-        object z = [|a|] ?? b ?? c;
+        void M()
+        {
+            object z = [|a|] ?? b ?? c;
+        }
     }
-}";
+    """;
             // In position mode, we are inferring that the thing to the right is an object, because it's being assigned to a local of type object.
             // In node mode, we are inferring the node is an object? because it's to the left of the ??.
             await TestAsync(text, mode == TestMode.Node ? "global::System.Object?" : "global::System.Object", mode);
@@ -2785,13 +3085,15 @@ void M()
         public async Task TestNullCoalescingOperator3(TestMode mode)
         {
             var text =
-    @"class C
-{
-    void M()
+    """
+    class C
     {
-        object z = a ?? [|b|] ?? c;
+        void M()
+        {
+            object z = a ?? [|b|] ?? c;
+        }
     }
-}";
+    """;
             // In position mode, we are inferring that the thing to the right is an object, because it's to the right of the first ??
             // and thus must be the same type as the object being assigned to.
             // In node mode, we are inferring the node is an object? because it's to the left of the ??.
@@ -2802,16 +3104,18 @@ void M()
         public async Task TestSelectLambda()
         {
             var text =
-    @"using System.Collections.Generic;
-using System.Linq;
+    """
+    using System.Collections.Generic;
+    using System.Linq;
 
-class C
-{
-    void M(IEnumerable<string> args)
+    class C
     {
-        args = args.Select(a =>[||])
+        void M(IEnumerable<string> args)
+        {
+            args = args.Select(a =>[||])
+        }
     }
-}";
+    """;
             await TestAsync(text, "global::System.Object", TestMode.Node);
         }
 
@@ -2819,16 +3123,18 @@ void M(IEnumerable<string> args)
         public async Task TestSelectLambda2()
         {
             var text =
-    @"using System.Collections.Generic;
-using System.Linq;
+    """
+    using System.Collections.Generic;
+    using System.Linq;
 
-class C
-{
-    void M(IEnumerable<string> args)
+    class C
     {
-        args = args.Select(a =>[|b|])
+        void M(IEnumerable<string> args)
+        {
+            args = args.Select(a =>[|b|])
+        }
     }
-}";
+    """;
             await TestAsync(text, "global::System.String", TestMode.Node);
         }
 
@@ -2837,18 +3143,20 @@ void M(IEnumerable<string> args)
         public async Task TestSelectLambda3(TestMode mode)
         {
             var text =
-@"using System.Collections.Generic;
-using System.Linq;
+                """
+                using System.Collections.Generic;
+                using System.Linq;
 
-class A { }
-class B { }
-class C
-{
-    IEnumerable<B> GetB(IEnumerable<A> a)
-    {
-        return a.Select(i => [|Goo(i)|]);
-    }
-}";
+                class A { }
+                class B { }
+                class C
+                {
+                    IEnumerable<B> GetB(IEnumerable<A> a)
+                    {
+                        return a.Select(i => [|Goo(i)|]);
+                    }
+                }
+                """;
             await TestAsync(text, "global::B", mode);
         }
 
@@ -2856,13 +3164,15 @@ IEnumerable<B> GetB(IEnumerable<A> a)
         public async Task TestDefaultStatement1()
         {
             var text =
-    @"class C
-{
-    static void Main(string[] args)
+    """
+    class C
     {
-        System.ConsoleModifiers c = default([||])
+        static void Main(string[] args)
+        {
+            System.ConsoleModifiers c = default([||])
+        }
     }
-}";
+    """;
             await TestAsync(text, "global::System.ConsoleModifiers", TestMode.Position);
         }
 
@@ -2870,13 +3180,15 @@ static void Main(string[] args)
         public async Task TestDefaultStatement2()
         {
             var text =
-    @"class C
-{
-    static void Goo(System.ConsoleModifiers arg)
+    """
+    class C
     {
-        Goo(default([||])
+        static void Goo(System.ConsoleModifiers arg)
+        {
+            Goo(default([||])
+        }
     }
-}";
+    """;
             await TestAsync(text, "global::System.ConsoleModifiers", TestMode.Position);
         }
 
@@ -2884,15 +3196,16 @@ static void Goo(System.ConsoleModifiers arg)
         public async Task TestWhereCall()
         {
             var text =
-    @"
-using System.Collections.Generic;
-class C
-{
-    void Goo()
+    """
+    using System.Collections.Generic;
+    class C
     {
-        [|ints|].Where(i => i > 10);
+        void Goo()
+        {
+            [|ints|].Where(i => i > 10);
+        }
     }
-}";
+    """;
             await TestAsync(text, "global::System.Collections.Generic.IEnumerable<global::System.Int32>", TestMode.Node);
         }
 
@@ -2900,15 +3213,16 @@ void Goo()
         public async Task TestWhereCall2()
         {
             var text =
-    @"
-using System.Collections.Generic;
-class C
-{
-    void Goo()
+    """
+    using System.Collections.Generic;
+    class C
     {
-        [|ints|].Where(i => null);
+        void Goo()
+        {
+            [|ints|].Where(i => null);
+        }
     }
-}";
+    """;
             await TestAsync(text, "global::System.Collections.Generic.IEnumerable<global::System.Object>", TestMode.Node);
         }
 
@@ -2916,16 +3230,18 @@ void Goo()
         public async Task TestObjectCreationBeforeArrayIndexing()
         {
             var text =
-@"using System;
-class C
-{
-  void M()
-  {
-        int[] array;
-        C p = new [||]
-        array[4] = 4;
-  }
-}";
+                """
+                using System;
+                class C
+                {
+                  void M()
+                  {
+                        int[] array;
+                        C p = new [||]
+                        array[4] = 4;
+                  }
+                }
+                """;
 
             await TestAsync(text, "global::C", TestMode.Position);
         }
@@ -2957,14 +3273,16 @@ await TestInMethodAsync(
         public async Task TestObjectCreationBeforeBlock()
         {
             var text =
-@"class Program
-{
-    static void Main(string[] args)
-    {
-        Program p = new [||] 
-        { }
-    }
-}";
+                """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        Program p = new [||] 
+                        { }
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::Program", TestMode.Position);
         }
@@ -2973,17 +3291,19 @@ static void Main(string[] args)
         public async Task TestInferringThroughGenericFunctionWithNullableReturn(TestMode mode)
         {
             var text =
-@"#nullable enable
+                """
+                #nullable enable
 
-class Program
-{
-    static void Main(string[] args)
-    {
-        string? s = Identity([|input|]);
-    }
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        string? s = Identity([|input|]);
+                    }
 
-    static T Identity<T>(T value) { return value; }
-}";
+                    static T Identity<T>(T value) { return value; }
+                }
+                """;
 
             await TestAsync(text, "global::System.String?", mode);
         }
@@ -2992,15 +3312,17 @@ static void Main(string[] args)
         public async Task TestInferringThroughGenericFunctionMissingArgument()
         {
             var text =
-@"class Program
-{
-    static void Main(string[] args)
-    {
-        string s = Identity([||]);
-    }
+                """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        string s = Identity([||]);
+                    }
 
-    static T Identity<T>(T value) { return value; }
-}";
+                    static T Identity<T>(T value) { return value; }
+                }
+                """;
 
             await TestAsync(text, "global::System.String", TestMode.Position);
         }
@@ -3009,15 +3331,17 @@ static void Main(string[] args)
         public async Task TestInferringThroughGenericFunctionTooManyArguments(TestMode mode)
         {
             var text =
-@"class Program
-{
-    static void Main(string[] args)
-    {
-        string s = Identity(""test"", [||]);
-    }
+                """
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        string s = Identity("test", [||]);
+                    }
 
-    static T Identity<T>(T value) { return value; }
-}";
+                    static T Identity<T>(T value) { return value; }
+                }
+                """;
 
             await TestAsync(text, "global::System.Object", mode);
         }
@@ -3047,16 +3371,18 @@ await TestInMethodAsync(
         public async Task TestInferringInEnumHasFlags(TestMode mode)
         {
             var text =
-@"using System.IO;
+                """
+                using System.IO;
 
-class Program
-{
-    static void Main(string[] args)
-    {
-        FileInfo f;
-        f.Attributes.HasFlag([|flag|]);
-    }
-}";
+                class Program
+                {
+                    static void Main(string[] args)
+                    {
+                        FileInfo f;
+                        f.Attributes.HasFlag([|flag|]);
+                    }
+                }
+                """;
 
             await TestAsync(text, "global::System.IO.FileAttributes", mode);
         }
@@ -3131,102 +3457,102 @@ public void M()
         [Fact]
         public async Task TestEnumInPatterns_SwitchStatement_PropertyPattern()
         {
-            var markup = @"
-public enum Color
-{
-    Red,
-    Green,
-}
-
-class C
-{
-    public Color Color { get; }
+            var markup = """
+                public enum Color
+                {
+                    Red,
+                    Green,
+                }
 
-    public void M()
-    {
-        switch (this)
-        {
-            case { Color: [||]
-    }
-}
-";
+                class C
+                {
+                    public Color Color { get; }
+
+                    public void M()
+                    {
+                        switch (this)
+                        {
+                            case { Color: [||]
+                    }
+                }
+                """;
             await TestAsync(markup, "global::Color", TestMode.Position);
         }
 
         [Fact]
         public async Task TestEnumInPatterns_SwitchExpression_PropertyPattern()
         {
-            var markup = @"
-public enum Color
-{
-    Red,
-    Green,
-}
-
-class C
-{
-    public Color Color { get; }
+            var markup = """
+                public enum Color
+                {
+                    Red,
+                    Green,
+                }
 
-    public void M()
-    {
-        var isRed = this switch
-        {
-            { Color: [||]
-    }
-}
-";
+                class C
+                {
+                    public Color Color { get; }
+
+                    public void M()
+                    {
+                        var isRed = this switch
+                        {
+                            { Color: [||]
+                    }
+                }
+                """;
             await TestAsync(markup, "global::Color", TestMode.Position);
         }
 
         [Fact]
         public async Task TestEnumInPatterns_SwitchStatement_ExtendedPropertyPattern()
         {
-            var markup = @"
-public enum Color
-{
-    Red,
-    Green,
-}
-
-class C
-{
-    public C AnotherC { get; }
-    public Color Color { get; }
+            var markup = """
+                public enum Color
+                {
+                    Red,
+                    Green,
+                }
 
-    public void M()
-    {
-        switch (this)
-        {
-            case { AnotherC.Color: [||]
-    }
-}
-";
+                class C
+                {
+                    public C AnotherC { get; }
+                    public Color Color { get; }
+
+                    public void M()
+                    {
+                        switch (this)
+                        {
+                            case { AnotherC.Color: [||]
+                    }
+                }
+                """;
             await TestAsync(markup, "global::Color", TestMode.Position);
         }
 
         [Fact]
         public async Task TestEnumInPatterns_SwitchStatement_ExtendedPropertyPattern_Field()
         {
-            var markup = @"
-public enum Color
-{
-    Red,
-    Green,
-}
-
-class C
-{
-    public C AnotherC { get; }
-    public Color Color;
+            var markup = """
+                public enum Color
+                {
+                    Red,
+                    Green,
+                }
 
-    public void M()
-    {
-        switch (this)
-        {
-            case { AnotherC.Color: [||]
-    }
-}
-";
+                class C
+                {
+                    public C AnotherC { get; }
+                    public Color Color;
+
+                    public void M()
+                    {
+                        switch (this)
+                        {
+                            case { AnotherC.Color: [||]
+                    }
+                }
+                """;
             await TestAsync(markup, "global::Color", TestMode.Position);
         }
     }
diff --git a/src/EditorFeatures/CSharpTest/Workspaces/WorkspaceTests_EditorFeatures.cs b/src/EditorFeatures/CSharpTest/Workspaces/WorkspaceTests_EditorFeatures.cs
index 68cc8f692a267..676bde4fbdea4 100644
--- a/src/EditorFeatures/CSharpTest/Workspaces/WorkspaceTests_EditorFeatures.cs
+++ b/src/EditorFeatures/CSharpTest/Workspaces/WorkspaceTests_EditorFeatures.cs
@@ -158,11 +158,13 @@ public async Task TestChangeOptions1()
             var solution = workspace.CurrentSolution;
 
             var document = new TestHostDocument(
-@"#if GOO
-class C { }
-#else
-class D { }
-#endif");
+                """
+                #if GOO
+                class C { }
+                #else
+                class D { }
+                #endif
+                """);
 
             var project1 = new TestHostProject(workspace, document, name: "project1");
 
@@ -183,11 +185,13 @@ public async Task TestChangeOptions2()
             var solution = workspace.CurrentSolution;
 
             var document = new TestHostDocument(
-@"#if GOO
-class C { }
-#else
-class D { }
-#endif");
+                """
+                #if GOO
+                class C { }
+                #else
+                class D { }
+                #endif
+                """);
 
             var project1 = new TestHostProject(workspace, document, name: "project1");
 
@@ -445,7 +449,11 @@ public async Task TestGetCompilationOnCrossLanguageDependentProject()
             var document1 = new TestHostDocument(@"public class C { }");
             var project1 = new TestHostProject(workspace, document1, name: "project1");
 
-            var document2 = new TestHostDocument("Public Class D \r\n  Inherits C\r\nEnd Class");
+            var document2 = new TestHostDocument("""
+                Public Class D 
+                  Inherits C
+                End Class
+                """);
             var project2 = new TestHostProject(workspace, document2, language: LanguageNames.VisualBasic, name: "project2", projectReferences: new[] { project1 });
 
             workspace.AddTestProject(project1);
@@ -469,7 +477,11 @@ public async Task TestGetCompilationOnCrossLanguageDependentProjectChanged()
             var document1 = new TestHostDocument(@"public class C { }");
             var project1 = new TestHostProject(workspace, document1, name: "project1");
 
-            var document2 = new TestHostDocument("Public Class D \r\n  Inherits C\r\nEnd Class");
+            var document2 = new TestHostDocument("""
+                Public Class D 
+                  Inherits C
+                End Class
+                """);
             var project2 = new TestHostProject(workspace, document2, language: LanguageNames.VisualBasic, name: "project2", projectReferences: new[] { project1 });
 
             workspace.AddTestProject(project1);
@@ -514,7 +526,11 @@ public async Task TestDependentSemanticVersionChangesWhenNotOriginallyAccessed()
             var document1 = new TestHostDocument(@"public class C { }");
             var project1 = new TestHostProject(workspace, document1, name: "project1");
 
-            var document2 = new TestHostDocument("Public Class D \r\n  Inherits C\r\nEnd Class");
+            var document2 = new TestHostDocument("""
+                Public Class D 
+                  Inherits C
+                End Class
+                """);
             var project2 = new TestHostProject(workspace, document2, language: LanguageNames.VisualBasic, name: "project2", projectReferences: new[] { project1 });
 
             workspace.AddTestProject(project1);
@@ -571,7 +587,11 @@ public async Task TestGetCompilationOnCrossLanguageDependentProjectChangedInProg
             var document1 = new TestHostDocument(@"public class C { }");
             var project1 = new TestHostProject(workspace, document1, name: "project1");
 
-            var document2 = new TestHostDocument("Public Class D \r\n  Inherits C\r\nEnd Class");
+            var document2 = new TestHostDocument("""
+                Public Class D 
+                  Inherits C
+                End Class
+                """);
             var project2 = new TestHostProject(workspace, document2, language: LanguageNames.VisualBasic, name: "project2", projectReferences: new[] { project1 });
 
             workspace.AddTestProject(project1);
@@ -1052,8 +1072,12 @@ public async Task TestAnalyzerConfigFile_Properties()
         public async Task TestAdditionalFile_DocumentChanged()
         {
             using var workspace = CreateWorkspace();
-            var startText = @"<setting value = ""goo""";
-            var newText = @"<setting value = ""goo1""";
+            var startText = """
+                <setting value = "goo"
+                """;
+            var newText = """
+                <setting value = "goo1"
+                """;
             var document = new TestHostDocument("public class C { }");
             var additionalDoc = new TestHostDocument(startText);
             var project1 = new TestHostProject(workspace, name: "project1", documents: new[] { document }, additionalDocuments: new[] { additionalDoc });
@@ -1117,7 +1141,9 @@ public async Task TestAnalyzerConfigFile_DocumentChanged()
         public void TestAdditionalFile_OpenClose()
         {
             using var workspace = CreateWorkspace();
-            var startText = @"<setting value = ""goo""";
+            var startText = """
+                <setting value = "goo"
+                """;
             var document = new TestHostDocument("public class C { }");
             var additionalDoc = new TestHostDocument(startText);
             var project1 = new TestHostProject(workspace, name: "project1", documents: new[] { document }, additionalDocuments: new[] { additionalDoc });
@@ -1175,7 +1201,9 @@ public void TestAnalyzerConfigFile_OpenClose()
         public void TestAdditionalFile_AddRemove()
         {
             using var workspace = CreateWorkspace();
-            var startText = @"<setting value = ""goo""";
+            var startText = """
+                <setting value = "goo"
+                """;
             var document = new TestHostDocument("public class C { }");
             var additionalDoc = new TestHostDocument(startText, "original.config");
             var project1 = new TestHostProject(workspace, name: "project1", documents: new[] { document }, additionalDocuments: new[] { additionalDoc });
@@ -1247,7 +1275,9 @@ public void TestAnalyzerConfigFile_AddRemove()
         public void TestAdditionalFile_AddRemove_FromProject()
         {
             using var workspace = CreateWorkspace();
-            var startText = @"<setting value = ""goo""";
+            var startText = """
+                <setting value = "goo"
+                """;
             var document = new TestHostDocument("public class C { }");
             var additionalDoc = new TestHostDocument(startText, "original.config");
             var project1 = new TestHostProject(workspace, name: "project1", documents: new[] { document }, additionalDocuments: new[] { additionalDoc });
@@ -1305,7 +1335,9 @@ public void TestAdditionalFile_GetDocumentIdsWithFilePath()
             using var workspace = CreateWorkspace();
             const string docFilePath = "filePath1", additionalDocFilePath = "filePath2";
             var document = new TestHostDocument("public class C { }", filePath: docFilePath);
-            var additionalDoc = new TestHostDocument(@"<setting value = ""goo""", filePath: additionalDocFilePath);
+            var additionalDoc = new TestHostDocument("""
+                <setting value = "goo"
+                """, filePath: additionalDocFilePath);
             var project1 = new TestHostProject(workspace, name: "project1", documents: new[] { document }, additionalDocuments: new[] { additionalDoc });
             workspace.AddTestProject(project1);
 
diff --git a/src/Features/CSharpTest/Utilities/CodeSnippets.cs b/src/Features/CSharpTest/Utilities/CodeSnippets.cs
index c779bdbd229df..19b27f6270d28 100644
--- a/src/Features/CSharpTest/Utilities/CodeSnippets.cs
+++ b/src/Features/CSharpTest/Utilities/CodeSnippets.cs
@@ -8,48 +8,48 @@ namespace Microsoft.CodeAnalysis.Editor.CSharp.UnitTests
 {
     internal static class CodeSnippets
     {
-        public const string FormattableStringType = @"
-namespace System
-{
-    public abstract class FormattableString : IFormattable
-    {
-        public abstract string Format { get; }
-        public abstract object[] GetArguments();
-        public abstract int ArgumentCount { get; }
-        public abstract object GetArgument(int index);
-        public abstract string ToString(IFormatProvider formatProvider);
+        public const string FormattableStringType = """
+            namespace System
+            {
+                public abstract class FormattableString : IFormattable
+                {
+                    public abstract string Format { get; }
+                    public abstract object[] GetArguments();
+                    public abstract int ArgumentCount { get; }
+                    public abstract object GetArgument(int index);
+                    public abstract string ToString(IFormatProvider formatProvider);
 
-        string IFormattable.ToString(string ignored, IFormatProvider formatProvider) => ToString(formatProvider);
-        public static string Invariant(FormattableString formattable) => formattable.ToString(Globalization.CultureInfo.InvariantCulture);
-        public override string ToString() => ToString(Globalization.CultureInfo.CurrentCulture);
-    }
-}
+                    string IFormattable.ToString(string ignored, IFormatProvider formatProvider) => ToString(formatProvider);
+                    public static string Invariant(FormattableString formattable) => formattable.ToString(Globalization.CultureInfo.InvariantCulture);
+                    public override string ToString() => ToString(Globalization.CultureInfo.CurrentCulture);
+                }
+            }
 
-namespace System.Runtime.CompilerServices
-{
-    public static class FormattableStringFactory
-    {
-        public static FormattableString Create(string format, params object[] arguments) => new ConcreteFormattableString(format, arguments);
+            namespace System.Runtime.CompilerServices
+            {
+                public static class FormattableStringFactory
+                {
+                    public static FormattableString Create(string format, params object[] arguments) => new ConcreteFormattableString(format, arguments);
 
-        private sealed class ConcreteFormattableString : FormattableString
-        {
-            private readonly string _format;
-            private readonly object[] _arguments;
+                    private sealed class ConcreteFormattableString : FormattableString
+                    {
+                        private readonly string _format;
+                        private readonly object[] _arguments;
 
-            internal ConcreteFormattableString(string format, object[] arguments)
-            {
-                _format = format;
-                _arguments = arguments;
-            }
+                        internal ConcreteFormattableString(string format, object[] arguments)
+                        {
+                            _format = format;
+                            _arguments = arguments;
+                        }
 
-            public override string Format => _format;
-            public override object[] GetArguments() => _arguments;
-            public override int ArgumentCount => _arguments.Length;
-            public override object GetArgument(int index) => _arguments[index];
-            public override string ToString(IFormatProvider formatProvider) => string.Format(formatProvider, _format, _arguments);
-        }
-    }
-}
-";
+                        public override string Format => _format;
+                        public override object[] GetArguments() => _arguments;
+                        public override int ArgumentCount => _arguments.Length;
+                        public override object GetArgument(int index) => _arguments[index];
+                        public override string ToString(IFormatProvider formatProvider) => string.Format(formatProvider, _format, _arguments);
+                    }
+                }
+            }
+            """;
     }
 }