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Switch from trybuild to ui-test #187

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joshlf opened this issue May 27, 2023 · 2 comments
Open

Switch from trybuild to ui-test #187

joshlf opened this issue May 27, 2023 · 2 comments
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compatibility-nonbreaking Changes that are (likely to be) non-breaking

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@joshlf
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joshlf commented May 27, 2023 •
edited

See also: #560

The trybuild crate keeps track of expected compiler errors in a separate .stderr file - one .stderr file per .rs file. This makes it difficult to audit updates to these files, which tend to be very cluttered and verbose, and makes issues like #706 / #707 more likely to slip through.

By contrast, the ui-test crate allows annotating expected errors in an inline comment, which is much more readable and thus much less error-prone. It will also make it feasible for us to combine multiple tests in a single file without worrying about it increasing the likelihood of errors slipping through.
@joshlf joshlf added the compatibility-nonbreaking Changes that are (likely to be) non-breaking label Aug 12, 2023
@joshlf joshlf mentioned this issue Oct 28, 2023
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joshlf added a commit that referenced this issue Dec 9, 2023
@joshlf
[tests] Fix UI tests with missing imports
7b32be2 
Previously, some UI tests had missing imports which caused the
corresponding `.stderr` files to be populated with unhelpful "cannot
find ..." messages. This is another point in favor of #187 (switching to
the `ui-test` crate), which presumably would have made it much less
likely for this to slip under the radar.
@joshlf joshlf mentioned this issue Dec 9, 2023
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@joshlf
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joshlf commented Dec 9, 2023 •
edited

This would likely have prevented #706 / #707.

@joshlf joshlf changed the title Consider switching from trybuild to ui-test Switch from trybuild to ui-test Dec 9, 2023
github-merge-queue bot pushed a commit that referenced this issue Dec 9, 2023
@joshlf
[tests] Fix UI tests with missing imports (#706)
0cdf0cb 
Previously, some UI tests had missing imports which caused the
corresponding `.stderr` files to be populated with unhelpful "cannot
find ..." messages. This is another point in favor of #187 (switching to
the `ui-test` crate), which presumably would have made it much less
likely for this to slip under the radar.
@joshlf
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joshlf commented Dec 13, 2023

Another reason to migrate off of trybuild: dtolnay/trybuild#241 is preventing us from implementing a test which would detect a regression of #716.

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