Introduce TestFailure to be Result::Err for the generated outer function of #[googletest] tests.
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…output even if there are preceding non-fatal errors in the test. There was a bug in which, if a test had a mix of fatal and non-fatal assertions, and a non-fatal assertion failed, then the test assertion failure message of a subsequent fatal assertion failure would not be output. This did not affect the overall test result but would be confusing and misleading by not including all failure messages. This change fixes the bug and introduces an integration test to protect against it.
…unction of `#[googletest]` tests. Previously the function generated by the `#[googletest]` macro would be `()`. This resulted in a Clippy warning that `()` did not implement `std::errror::Error`. It would also result in a slightly confusing test failure output: ``` ...test assertion failure output... Error: () ``` The new empty struct `TestFailure` implements `std::error::Error` and displays to a more helpful message referring to the test assertion failure output above.
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Previously the function generated by the
#[googletest]macro would be(). This resulted in a Clippy warning that()did not implementstd::errror::Error. It would also result in a slightly confusing test failure output:The new empty struct
TestFailureimplementsstd::error::Errorand displays to a more helpful message referring to the test assertion failure output above.