Enhancements to testsuite error output. #9589
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This is intended to help with adding more usage of anyhow in the testsuite, which can help show context for errors. This also includes some small improvements to the error messages to provide more information.
This includes various minor refactorings to try to clean things up and provide better error messages.
It isn't needed anymore, and I would prefer to not keep around unused code. It can always be added back if ever needed again.
Use better high-level interfaces to achieve the same thing.
Using `with_json` is safer since it knows what JSON escaping is.
I don't trust that all these transformations won't have unintended consequences on other platforms. It is nice to verify there aren't any backslash shenanigans on other platforms.
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Nah this is great, thanks! FWIW I tend to not review changes to the test suite too too closely so I haven't exactly taken a super close look at this. Most of this is already exercised during the test suite itself and we can of course fix issues as they arise though! @bors: r+ |
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Jun 24, 2021
Update cargo This also updates `opener` used in bootstrap (to try to keep dependencies unified). 18 commits in 44456677b5d1d82fe981c955dc5c67734b31f340..9233aa06c801801cff75df65df718d70905a235e 2021-06-12 18:00:01 +0000 to 2021-06-22 21:32:55 +0000 - Detect incorrectly named cargo.toml (rust-lang/cargo#9607) - Unify weak and namespaced features. (rust-lang/cargo#9574) - Change `rustc-cdylib-link-arg` error to a warning. (rust-lang/cargo#9563) - Updates to future-incompatible reporting. (rust-lang/cargo#9606) - Add a compatibility notice for diesel and the new resolver. (rust-lang/cargo#9602) - Don't allow config env to modify vars set by cargo (rust-lang/cargo#9579) - Disambiguate is_symlink. (rust-lang/cargo#9604) - Update opener requirement from 0.4 to 0.5 (rust-lang/cargo#9583) - Avoid quadratic complexity when splitting output into lines (rust-lang/cargo#9586) - Bump to 0.56.0, update changelog (rust-lang/cargo#9597) - Fix dep-info files including non-local build script paths. (rust-lang/cargo#9596) - Relax doc collision error. (rust-lang/cargo#9595) - Handle "jobs = 0" case in cargo config files (rust-lang/cargo#9584) - Enhancements to testsuite error output. (rust-lang/cargo#9589) - Fix typo (rust-lang/cargo#9590) - Enable support for fix --edition for 2021. (rust-lang/cargo#9588) - Add more details for installing git repository errors (rust-lang/cargo#9582) - More information for links conflicting (rust-lang/cargo#9568)
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This includes several changes to the testsuite error reporting in theory to help make it easier to see differences when the test output changes. The key change is to add a Myers diff with a little colored output to highlight the differences. Here is an example:
The rest of the changes here are various refactorings to try to clean up the diffing code. It ended up being far more changes than I was intending, but I did try to split things into commits to separate them.