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* Add assert_contains macro * Update CHANGELOG * Add unit tests for assert_contains * Use assert_contains in docs instead of assert * Replace assert! with assert_contains!
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,116 @@ | ||
| /// Asserts that `left` contains `right`. | ||
| /// | ||
| /// Commonly used when asserting `pack` output in integration tests. Expands to a [`str::contains`] | ||
| /// call and logs `left` (in unescaped and escaped form) as well as `right` on failure. | ||
| /// | ||
| /// # Example | ||
| /// | ||
| /// ``` | ||
| /// use libcnb_test::assert_contains; | ||
| /// | ||
| /// let output = "Hello World!\nHello Integration Test!"; | ||
| /// assert_contains!(output, "Integration"); | ||
| /// ``` | ||
| #[macro_export] | ||
| macro_rules! assert_contains { | ||
| ($left:expr, $right:expr $(,)?) => {{ | ||
| if !$left.contains($right) { | ||
| ::std::panic!( | ||
| r#"assertion failed: `(left contains right)` | ||
| left (unescaped): | ||
| {} | ||
| left (escaped): `{:?}` | ||
| right: `{:?}`"#, | ||
| $left, | ||
| $left, | ||
| $right, | ||
| ) | ||
| } | ||
| }}; | ||
|
|
||
| ($left:expr, $right:expr, $($arg:tt)+) => {{ | ||
| if !$left.contains($right) { | ||
| ::std::panic!( | ||
| r#"assertion failed: `(left contains right)` | ||
| left (unescaped): | ||
| {} | ||
| left (escaped): `{:?}` | ||
| right: `{:?}`: {}"#, | ||
| $left, | ||
| $left, | ||
| $right, | ||
| ::core::format_args!($($arg)+) | ||
| ) | ||
| } | ||
| }}; | ||
| } | ||
|
|
||
| #[cfg(test)] | ||
| mod test { | ||
| #[test] | ||
| fn simple() { | ||
| assert_contains!("Hello World!", "World"); | ||
| } | ||
|
|
||
| #[test] | ||
| fn simple_with_args() { | ||
| assert_contains!("Hello World!", "World", "World must be greeted!"); | ||
| } | ||
|
|
||
| #[test] | ||
| #[should_panic(expected = "assertion failed: `(left contains right)` | ||
| left (unescaped): | ||
| foo | ||
| left (escaped): `\"foo\"` | ||
| right: `\"bar\"`")] | ||
| fn simple_failure() { | ||
| assert_contains!("foo", "bar"); | ||
| } | ||
|
|
||
| #[test] | ||
| #[should_panic(expected = "assertion failed: `(left contains right)` | ||
| left (unescaped): | ||
| Hello Germany! | ||
| left (escaped): `\"Hello Germany!\"` | ||
| right: `\"World\"`: World must be greeted!")] | ||
| fn simple_failure_with_args() { | ||
| assert_contains!("Hello Germany!", "World", "World must be greeted!"); | ||
| } | ||
|
|
||
| #[test] | ||
| fn multiline() { | ||
| assert_contains!("Hello World!\nFoo\nBar\nBaz", "Bar"); | ||
| } | ||
|
|
||
| #[test] | ||
| #[should_panic(expected = "assertion failed: `(left contains right)` | ||
| left (unescaped): | ||
| Hello World! | ||
| Foo | ||
| Bar | ||
| Baz | ||
| left (escaped): `\"Hello World!\\nFoo\\nBar\\nBaz\"` | ||
| right: `\"Eggs\"`")] | ||
| fn multiline_failure() { | ||
| assert_contains!("Hello World!\nFoo\nBar\nBaz", "Eggs"); | ||
| } | ||
|
|
||
| #[test] | ||
| #[should_panic(expected = "assertion failed: `(left contains right)` | ||
| left (unescaped): | ||
| Hello World! | ||
| Foo | ||
| Bar | ||
| Baz | ||
| left (escaped): `\"Hello World!\\nFoo\\nBar\\nBaz\"` | ||
| right: `\"Eggs\"`: We need eggs!")] | ||
| fn multiline_failure_with_args() { | ||
| assert_contains!("Hello World!\nFoo\nBar\nBaz", "Eggs", "We need eggs!"); | ||
| } | ||
| } |