Update Rust crate googletest to v0.13.0

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
googletest	dev-dependencies	minor	=0.12.0 -> =0.13.0

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Release Notes

google/googletest-rust (googletest)

v0.13.0

Compare Source

API Changes

• Note that the minimum supported Rust version has increased from 1.66 to 1.70.

• Rename #[googletest::test] to #[googletest::gtest] and add it to the prelude.

  Note that #[googletest::test] will not be deprecated because this spelling is useful for compatibility with the rstest crate.

• Add assert_pred! to prelude.

New Features

• Add test fixture support for synchronous tests.

  Various traits to represent different types of test fixtures have been added. The core Fixture trait may be used like this:

  struct MyFixture {...}
  
  impl Fixture for MyFixture {
      fn set_up() -> Result<MyFixture> {
          Ok(MyFixture {...})
      }
  
      fn tear_down(self) -> Result<()> {
          Ok(())
      }
  }
  
  #[googletest::test]
  fn test_with_fixture(my_fixture: &MyFixture) {...}
  

  ConsumableFixture has only a set_up method and no tear_down method.

  FixtureOf<T> adapts a T: Default into a ConsumableFixture.

  StaticFixture has a set_up_once method which is called only once before any tests are run.

• Add impl Matcher<&()> for ().

• Handle the printing of arguments passed to gtest macros that do not implement Debug using inherent method specialization.

• Generalize verify_pred! such that it can take any expression and provide meaningful output of intermediate values on failure.

• Add support for printing the two sides of a binary operator and traversing inside a unary operator in verify_pred!.

  For example, an assertion of the form verify_pred!(a == b) will print both the left and right-hand sides when it fails.

• Add support for sequences (ordered and unordered) to expect_that! and assert_that!.

• Add result_of! and result_of_ref! matchers for matching with a function applied to the value first.

  Example: verify_that!(100, result_of!(|value| value + 1, eq(101)))?; will pass.

• Add special cases to verify_eq! so that, when doing eq matching on sequences of tuple elements, the matcher applies tuple matching, distributing eq pointwise.

  This improves the ergonomics of tests that check for tuple contents, such as:

  let hash_map: std::collections::HashMap<String, String> =
      std::collections::HashMap::from([
          ("a".into(), "A".into()),
          ("b".into(), "B".into())]);
  verify_eq!(hash_map, {("a", "A"), ("b", "B")})

  because the matcher for &str is compatible with &String.

  The specialization applies on the inner structure; without it, the general matcher on tuples doesn't apply in the above case due to the definition of PartialEq on whole tuples, which is currently limited by rust-lang/rust#105092.

• Add is_true! and is_false! Boolean matchers.

Bug Fixes

• Fix #[gtest] failing to compile when a user-declared std or core module is in scope.

• Fix stack overflow that occurs when verify_pred! is used with nested function calls.

• Fix bug in summarize_diff where actual and expected strings were considered equal despite only one of the two ending in a newline character.

Full Changelog: google/googletest-rust@v0.12.0...v0.13.0

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