Provide ignore message when the test ignored

[yanganto]

Problem

There may be meta value as a reason for ignoring attributes on a test case.
the-ignore-attribute

#[test]
#[ignore = "not yet implemented"]
fn test_ignored() {
    // …
}

It is good to show the reason if exist on the result of cargo test.

By the way, the crate will utilize this feature to help users easily to know why the test case ignored
https://github.com/yanganto/test-with/

This is the first post for me here, if there is something I need to change, please kindly tell me thanks.

Proposed Solution

For example to show the reason if exist as following result of cargo test.

running 2 tests
test tests::test_ignored ... ignored, *not yet implemented*
test tests::test_works ... ok

test result: ok. 1 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s

Notes

This issue also opens in Rust internal
https://internals.rust-lang.org/t/pre-rfc-provide-ignore-message-when-the-test-ignored/15904

[weihanglo]

My impression is that either solving the issue in runtime or compile time, the responsibility is on test frameworks but not cargo. Do you have any advice that this should be done in cargo?

[yanganto]

The issue should not open here, I misunderstood the test flow. I thought that the test cases are controled by cargo test. Thanks for reminding this.