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Add shrunken case to stderr output #631

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Add shrunken case to stderr output #631

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648246a
Add shrunken value to stderr output
chrisroberts14 Feb 11, 2026
8662252
Revert formatting
chrisroberts14 Feb 11, 2026
055e399
Add changelog entry
chrisroberts14 Feb 11, 2026
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6 changes: 6 additions & 0 deletions proptest/CHANGELOG.md
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Original file line number Diff line number Diff line change
@@ -1,3 +1,9 @@
## Unreleased

### Other Notes

- When using failure persistence the shrunken case is now also output to stderr

## 1.10.0

### Breaking Changes
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6 changes: 4 additions & 2 deletions proptest/src/test_runner/failure_persistence/file.rs
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Expand Up @@ -155,10 +155,12 @@ impl FailurePersistence for FileFailurePersistence {
"proptest: Saving this and future failures in {}\n\
proptest: If this test was run on a CI system, you may \
wish to add the following line to your copy of the file.{}\n\
{}",
{} # shrinks to {:?}",
path.display(),
if is_new { " (You may need to create it.)" } else { "" },
seed);
seed,
shrunken_value
);
}
}
}
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