refactor(resolver): change internal funcs to non-pub by moving to uni…

…t tests (#682)

crates/oxc_resolver/README.md

@@ -37,6 +37,8 @@
 ## Test
 
 Tests ported from [enhanced-resolve](https://github.com/webpack/enhanced-resolve).
+Test cases are located in `./src/tests`, fixtures are located in `./tests`
+
 Crossed out test files are irrelevant.
 
 - [x] ~CachedInputFileSystem.test.js~

crates/oxc_resolver/src/lib.rs

@@ -17,6 +17,9 @@ mod path;
 mod request;
 mod resolution;
 
+#[cfg(test)]
+mod tests;
+
 use std::{
     borrow::Cow,
     cmp::Ordering,
@@ -27,15 +30,15 @@ use std::{
 use crate::{
     cache::{Cache, CacheValue},
     file_system::FileSystemOs,
+    package_json::{ExportsField, MatchObject},
     package_json::{ExportsKey, PackageJson},
+    path::PathUtil,
     request::{Request, RequestPath},
 };
 pub use crate::{
     error::{JSONError, ResolveError},
     file_system::{FileMetadata, FileSystem},
     options::{Alias, AliasValue, ResolveOptions},
-    package_json::{ExportsField, MatchObject},
-    path::PathUtil,
     resolution::Resolution,
 };
 
@@ -535,9 +538,7 @@ impl<Fs: FileSystem> ResolverGeneric<Fs> {
     }
 
     /// PACKAGE_EXPORTS_RESOLVE(packageURL, subpath, exports, conditions)
-    ///
-    /// # Errors
-    pub fn package_exports_resolve(
+    fn package_exports_resolve(
         &self,
         package_url: &Path,
         subpath: &str,
@@ -550,8 +551,7 @@ impl<Fs: FileSystem> ResolverGeneric<Fs> {
             let mut without_dot = false;
             for key in map.keys() {
                 has_dot = has_dot || matches!(key, ExportsKey::Main | ExportsKey::Pattern(_));
-                without_dot = without_dot
-                    || matches!(key, ExportsKey::Hash(_) | ExportsKey::CustomCondition(_));
+                without_dot = without_dot || matches!(key, ExportsKey::CustomCondition(_));
                 if has_dot && without_dot {
                     return Err(ResolveError::InvalidPackageConfig(
                         package_url.join("package.json"),
@@ -661,9 +661,7 @@ impl<Fs: FileSystem> ResolverGeneric<Fs> {
     }
 
     /// PACKAGE_IMPORTS_EXPORTS_RESOLVE(matchKey, matchObj, packageURL, isImports, conditions)
-    ///
-    /// # Errors
-    pub fn package_imports_exports_resolve(
+    fn package_imports_exports_resolve(
         &self,
         match_key: &str,
         match_obj: &MatchObject,

crates/oxc_resolver/src/package_json.rs

@@ -75,7 +75,6 @@ impl ExportsField {
 pub enum ExportsKey {
     Main,
     Pattern(String),
-    Hash(String),
     CustomCondition(String),
 }
 

crates/oxc_resolver/tests/enhanced_resolve/test/alias.rs → crates/oxc_resolver/src/tests/alias.rs

@@ -2,11 +2,9 @@
 
 use std::path::{Path, PathBuf};
 
-use oxc_resolver::{
-    AliasValue, Resolution, ResolveError, ResolveOptions, Resolver, ResolverGeneric,
-};
+use crate::{AliasValue, Resolution, ResolveError, ResolveOptions, Resolver, ResolverGeneric};
 
-use crate::MemoryFS;
+use super::memory_fs::MemoryFS;
 
 #[test]
 #[cfg(not(target_os = "windows"))] // MemoryFS's path separator is always `/` so the test will not pass in windows.

crates/oxc_resolver/tests/enhanced_resolve/test/browser_field.rs → crates/oxc_resolver/src/tests/browser_field.rs

@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("browser-module")

crates/oxc_resolver/tests/enhanced_resolve/test/exports_field.rs → crates/oxc_resolver/src/tests/exports_field.rs

@@ -2,7 +2,7 @@
 //!
 //! The huge exports field test cases are at the bottom of this file.
 
-use oxc_resolver::{ExportsField, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{ExportsField, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
 use serde_json::json;
 use std::path::Path;
 

crates/oxc_resolver/tests/enhanced_resolve/test/extension_alias.rs → crates/oxc_resolver/src/tests/extension_alias.rs

@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("extension-alias")

crates/oxc_resolver/tests/enhanced_resolve/test/extensions.rs → crates/oxc_resolver/src/tests/extensions.rs

@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("extensions")

crates/oxc_resolver/tests/enhanced_resolve/test/fallback.rs → crates/oxc_resolver/src/tests/fallback.rs

@@ -2,9 +2,9 @@
 
 use std::path::{Path, PathBuf};
 
-use oxc_resolver::{AliasValue, Resolution, ResolveError, ResolveOptions, ResolverGeneric};
+use crate::{AliasValue, Resolution, ResolveError, ResolveOptions, ResolverGeneric};
 
-use crate::MemoryFS;
+use super::memory_fs::MemoryFS;
 
 #[test]
 #[cfg(not(target_os = "windows"))] // MemoryFS's path separator is always `/` so the test will not pass in windows.

crates/oxc_resolver/tests/enhanced_resolve/test/imports_field.rs → crates/oxc_resolver/src/tests/imports_field.rs

@@ -4,7 +4,7 @@
 
 use serde_json::json;
 
-use oxc_resolver::{MatchObject, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{MatchObject, PathUtil, Resolution, ResolveError, ResolveOptions, Resolver};
 use std::path::Path;
 
 #[test]

crates/oxc_resolver/tests/enhanced_resolve/test/incorrect_description_file.rs → crates/oxc_resolver/src/tests/incorrect_description_file.rs

@@ -1,8 +1,8 @@
 //! <https://github.com/webpack/enhanced-resolve/blob/main/test/incorrect-description-file.test.js>
 
-use std::path::PathBuf;
+use std::{env, path::PathBuf};
 
-use oxc_resolver::{JSONError, ResolveError, Resolver};
+use crate::{JSONError, Resolution, ResolveError, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("incorrect-package")
@@ -45,3 +45,21 @@ fn incorrect_description_file_3() {
     let resolution = Resolver::default().resolve(f.join("pack2"), ".");
     assert!(resolution.is_err());
 }
+
+// `enhanced_resolve` does not have this test case
+#[test]
+fn no_description_file() {
+    let f = env::current_dir().unwrap().join("tests/enhanced_resolve");
+
+    // has description file
+    let resolver = Resolver::default();
+    assert_eq!(
+        resolver.resolve(&f, ".").map(Resolution::into_path_buf),
+        Ok(f.join("lib/index.js"))
+    );
+
+    // without description file
+    let resolver =
+        Resolver::new(ResolveOptions { description_files: vec![], ..ResolveOptions::default() });
+    assert_eq!(resolver.resolve(&f, "."), Err(ResolveError::NotFound(f.into_boxed_path())));
+}

crates/oxc_resolver/tests/memory_fs.rs → crates/oxc_resolver/src/tests/memory_fs.rs

@@ -3,7 +3,7 @@ use std::{
     path::{Path, PathBuf},
 };
 
-use oxc_resolver::{FileMetadata, FileSystem};
+use crate::{FileMetadata, FileSystem};
 
 pub struct MemoryFS {
     fs: vfs::MemoryFS,

crates/oxc_resolver/src/tests/mod.rs

@@ -0,0 +1,37 @@
+mod alias;
+mod browser_field;
+mod exports_field;
+mod extension_alias;
+mod extensions;
+mod fallback;
+mod imports_field;
+mod incorrect_description_file;
+mod memory_fs;
+mod resolve;
+mod roots;
+mod scoped_packages;
+mod simple;
+mod symlink;
+
+use crate::Resolver;
+use std::{env, path::PathBuf, sync::Arc, thread};
+
+pub fn fixture() -> PathBuf {
+    env::current_dir().unwrap().join("tests/enhanced_resolve/test/fixtures")
+}
+
+#[test]
+fn threaded_environment() {
+    let cwd = env::current_dir().unwrap();
+    let resolver = Arc::new(Resolver::default());
+    for _ in 0..2 {
+        _ = thread::spawn({
+            let cwd = cwd.clone();
+            let resolver = Arc::clone(&resolver);
+            move || {
+                _ = resolver.resolve(cwd, ".");
+            }
+        })
+        .join();
+    }
+}

crates/oxc_resolver/tests/enhanced_resolve/test/resolve.rs → crates/oxc_resolver/src/tests/resolve.rs

@@ -1,6 +1,6 @@
 //! <https://github.com/webpack/enhanced-resolve/blob/main/test/resolve.test.js>
 
-use oxc_resolver::{Resolution, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveOptions, Resolver};
 
 #[test]
 fn resolve() {

crates/oxc_resolver/tests/enhanced_resolve/test/roots.rs → crates/oxc_resolver/src/tests/roots.rs

@@ -2,7 +2,7 @@
 
 use std::env;
 
-use oxc_resolver::{AliasValue, Resolution, ResolveError, ResolveOptions, Resolver};
+use crate::{AliasValue, Resolution, ResolveError, ResolveOptions, Resolver};
 
 #[test]
 fn roots() {

crates/oxc_resolver/tests/enhanced_resolve/test/scoped_packages.rs → crates/oxc_resolver/src/tests/scoped_packages.rs

@@ -2,7 +2,7 @@
 
 use std::path::PathBuf;
 
-use oxc_resolver::{Resolution, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveOptions, Resolver};
 
 fn fixture() -> PathBuf {
     super::fixture().join("scoped")

crates/oxc_resolver/tests/enhanced_resolve/test/simple.rs → crates/oxc_resolver/src/tests/simple.rs

@@ -2,7 +2,7 @@
 
 use std::env;
 
-use oxc_resolver::Resolver;
+use crate::Resolver;
 
 #[test]
 fn simple() {

crates/oxc_resolver/tests/enhanced_resolve/test/symlink.rs → crates/oxc_resolver/src/tests/symlink.rs

@@ -1,6 +1,6 @@
 use std::{env, fs, io, path::Path};
 
-use oxc_resolver::{Resolution, ResolveOptions, Resolver};
+use crate::{Resolution, ResolveOptions, Resolver};
 
 #[derive(Debug, Clone, Copy)]
 enum FileType {