fix: prevent Data() screenshot filename collisions with uniqueScreenshotNames#5299
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kobenguyent merged 2 commits intocodeceptjs:3.xfrom Nov 18, 2025
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…hotNames - Fix timestamp precision from seconds to milliseconds in testToFileName - Move unique suffix application after data part removal to preserve uniqueness - Add comprehensive unit tests for Data() scenario collision prevention - Ensure each Data() iteration gets unique screenshot filename instead of overwriting Resolves issue where Data() test iterations were overwriting screenshots with identical filenames when uniqueScreenshotNames: true was enabled. Fixes codeceptjs#5298
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Pull Request Overview
This PR fixes a bug where Data() test iterations were overwriting screenshots with identical filenames when uniqueScreenshotNames: true was enabled. The fix corrects the order of operations in the testToFileName function and improves timestamp precision.
- Moves unique suffix application to after data part removal in filename generation
- Changes timestamp precision from seconds (10 digits) to milliseconds (13 digits) for better uniqueness
- Adds comprehensive unit tests to verify the fix prevents filename collisions in Data() scenarios
Reviewed Changes
Copilot reviewed 2 out of 2 changed files in this pull request and generated 1 comment.
| File | Description |
|---|---|
| lib/mocha/test.js | Reorders operations to apply unique suffix after removing data part from test title, ensuring uniqueness is preserved; changes timestamp from seconds to milliseconds |
| test/unit/plugin/screenshotOnFail_test.js | Updates existing tests to expect 13-digit millisecond timestamps; adds new test suite for Data() scenarios to verify unique filename generation |
Comments suppressed due to low confidence (1)
test/unit/plugin/screenshotOnFail_test.js:150
- Unused variable originalSaveScreenshot.
const originalSaveScreenshot = screenshotSaved
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Apply Copilot review suggestion to remove the unused originalSaveScreenshot variable that was assigned but never used.
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Motivation/Description of the PR
Fixed by Copilot Claude Sonnet 4.
I checked that the unit test
should generate unique screenshot names for Data() iterations with uniqueScreenshotNames: truefailed as expected before the fix.Resolves issue where Data() test iterations were overwriting screenshots with identical filenames when uniqueScreenshotNames: true was enabled.
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Type of change
Checklist:
npm run docs)npm run lint)npm test)