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Posted to notifications@seata.apache.org by "XiaoyangCai360 (via GitHub)" <gi...@apache.org> on 2025/11/20 18:46:50 UTC

[PR] test: Deflake DataCompareUtilsTest due to Map key iteration order [incubator-seata]

XiaoyangCai360 opened a new pull request, #7803:
URL: https://github.com/apache/incubator-seata/pull/7803

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   ### Ⅰ. Describe what this PR did
   This PR fixes flakiness in the unit tests of `DataCompareUtilsTest.java` within the `rm-datasource` module.
   
   The tests `testRowListToMapWithSinglePk` and `testRowListToMapWithMultipPk` were failing intermittently because they asserted the iteration order of keys returned from `DataCompareUtils.rowListToMap()` using `keySet().iterator().next()`. Since the underlying map implementation does not guarantee key order, this assertion was non-deterministic.
   
   The fix replaces the order-dependent check with an order-independent assertion (`containsKey()`), verifying the existence of an expected primary key in the resulting map, thereby stabilizing the tests.
   
   **No production code changes were made; this is a test-only change to improve CI stability.**
   
   ### Ⅱ. Does this pull request fix one issue?
   <!-- If that, add "fixes #xxx" below in the next line, for example, fixes #97. -->
   
   
   ### Ⅲ. Why don't you add test cases (unit test/integration test)? 
   This PR is a fix for existing flaky unit tests.
   
   ### Ⅳ. Describe how to verify it
   To confirm the flakiness is resolved, run the affected test repeatedly using a non-deterministic test runner such as [nondex](https://github.com/TestingResearchIllinois/NonDex). Successful runs across multiple attempts verify the fix:
   ```bash
   mvn -pl rm-datasource \
       -am edu.illinois:nondex-maven-plugin:2.1.7:nondex \
       -Dtest=org.apache.seata.rm.datasource.DataCompareUtilsTest \
       -DnondexRuns=10 \
       -DfailIfNoTests=false
   ```
   
   ### Ⅴ. Special notes for reviews
   - Test-only change in `rm-datasource` module (`DataCompareUtilsTest.java`).
   - No production code touched
   
   


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Re: [PR] test: Deflake DataCompareUtilsTest due to Map key iteration order [incubator-seata]

Posted by "codecov[bot] (via GitHub)" <gi...@apache.org>.
codecov[bot] commented on PR #7803:
URL: https://github.com/apache/incubator-seata/pull/7803#issuecomment-3561056469

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   :white_check_mark: All modified and coverable lines are covered by tests.
   :white_check_mark: Project coverage is 69.98%. Comparing base ([`4959cfb`](https://app.codecov.io/gh/apache/incubator-seata/commit/4959cfb49009d3e4c349fd2c95e590184bd5a9a8?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)) to head ([`25a2ad1`](https://app.codecov.io/gh/apache/incubator-seata/commit/25a2ad1c7f68d9e5c485617b013142ac435f85a9?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)).
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   <details><summary>Additional details and impacted files</summary>
   
   
   
   ```diff
   @@             Coverage Diff              @@
   ##                2.x    #7803      +/-   ##
   ============================================
   + Coverage     69.93%   69.98%   +0.04%     
     Complexity      992      992              
   ============================================
     Files          1322     1322              
     Lines         50175    50175              
     Branches       5932     5932              
   ============================================
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   + Misses        12150    12127      -23     
   + Partials       2934     2932       -2     
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Re: [PR] test: fix flaky DataCompareUtilsTest caused by nondeterministic Map key iteration order [incubator-seata]

Posted by "YvCeung (via GitHub)" <gi...@apache.org>.
YvCeung commented on PR #7803:
URL: https://github.com/apache/incubator-seata/pull/7803#issuecomment-3567975217

   LGTM


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Re: [PR] test: fix flaky DataCompareUtilsTest caused by nondeterministic Map key iteration order [incubator-seata]

Posted by "YvCeung (via GitHub)" <gi...@apache.org>.
YvCeung merged PR #7803:
URL: https://github.com/apache/incubator-seata/pull/7803


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