test(fix flaky test): fixing flaky TestZonalFileCacheReaderTestSuite#4788
test(fix flaky test): fixing flaky TestZonalFileCacheReaderTestSuite#4788raj-prince wants to merge 2 commits into
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Summary of ChangesHello, I'm Gemini Code Assist1! I'm currently reviewing this pull request and will post my feedback shortly. In the meantime, here's a summary to help you and other reviewers quickly get up to speed! This pull request addresses flakiness in the TestZonalFileCacheReaderTestSuite caused by race conditions between background downloader goroutines and test directory cleanup. By reordering the teardown sequence to ensure all asynchronous jobs are cancelled before the cache directory is removed, the tests are now more robust and reliable. Highlights
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Code Review
This pull request updates the TearDownTest method in file_cache_reader_test.go to clean up resources by calling .Destroy() on reader, reader_unfinalized_object, and jobManager before removing the cache directory. The review feedback recommends adding defensive nil checks before calling .Destroy() on these fields to prevent potential nil pointer dereference panics if SetupTest fails or panics before they are fully initialized.
… jobManager in teardown
Codecov Report✅ All modified and coverable lines are covered by tests. Additional details and impacted files@@ Coverage Diff @@
## master #4788 +/- ##
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- Coverage 83.66% 83.66% -0.01%
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Files 168 168
Lines 20819 20819
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- Hits 17419 17418 -1
- Misses 2750 2751 +1
Partials 650 650
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Description
to call t.jobManager.Destroy() before removing the directory. This guarantees that all background downloader jobs are instantly cancelled and stopped, releasing their file descriptors and terminating their goroutines, making the directory cleanup completely safe and race-free.
Link to the issue in case of a bug fix.
b/524993281
Testing details
Any backward incompatible change? If so, please explain.