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Posted to notifications@seata.apache.org by "XiaoyangCai360 (via GitHub)" <gi...@apache.org> on 2025/11/20 17:01:11 UTC
[PR] test: Fix non-deterministic in StringUtilsTest#testToStringAndCycleDependency [incubator-seata]
XiaoyangCai360 opened a new pull request, #7800:
URL: https://github.com/apache/incubator-seata/pull/7800
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### Ⅰ. Describe what this PR did
This PR fixes flakiness in the `testToStringAndCycleDependency` unit test within `StringUtilsTest`.
The flakiness was caused by **non-deterministic field ordering** returned by **Java Reflection** when the `StringUtils.toString()` method processes `CycleDependency` and `TestClass` objects. This led to `AssertionFailedError` because the hardcoded expected string did not match the actual string when fields were returned in an alternate order (e.g., `obj` then `s` instead of `s` then `obj`, or vice-versa).
**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 specifically addresses the flakiness of an existing unit test (`testToStringAndCycleDependency`) by making its assertions order-independent.
### 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 common \
-am edu.illinois:nondex-maven-plugin:2.1.7:nondex \
-Dtest=org.apache.seata.common.util.StringUtilsTest#testToStringAndCycleDependency \
-DnondexRuns=10 \
-DfailIfNoTests=false
```
### Ⅴ. Special notes for reviews
- No production code touched, and only modified one unit test case.
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Re: [PR] test: Fix non-deterministic in StringUtilsTest#testToStringAndCycleDependency [incubator-seata]
Posted by "codecov[bot] (via GitHub)" <gi...@apache.org>.
codecov[bot] commented on PR #7800:
URL: https://github.com/apache/incubator-seata/pull/7800#issuecomment-3561034395
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:white_check_mark: All modified and coverable lines are covered by tests.
:white_check_mark: Project coverage is 69.92%. 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 ([`82b1975`](https://app.codecov.io/gh/apache/incubator-seata/commit/82b197527ff86246400d57f1b5ed9b456c1e5db6?dropdown=coverage&el=desc&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=apache)).
:warning: Report is 1 commits behind head on 2.x.
<details><summary>Additional details and impacted files</summary>
```diff
@@ Coverage Diff @@
## 2.x #7800 +/- ##
============================================
- Coverage 69.93% 69.92% -0.01%
Complexity 992 992
============================================
Files 1322 1322
Lines 50175 50175
Branches 5932 5932
============================================
- Hits 35091 35086 -5
- Misses 12150 12155 +5
Partials 2934 2934
```
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Re: [PR] test: Fix non-deterministic in StringUtilsTest#testToStringAndCycleDependency [incubator-seata]
Posted by "maple525866 (via GitHub)" <gi...@apache.org>.
maple525866 merged PR #7800:
URL: https://github.com/apache/incubator-seata/pull/7800
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Re: [PR] test: Fix non-deterministic in StringUtilsTest#testToStringAndCycleDependency [incubator-seata]
Posted by "XiaoyangCai360 (via GitHub)" <gi...@apache.org>.
XiaoyangCai360 commented on PR #7800:
URL: https://github.com/apache/incubator-seata/pull/7800#issuecomment-3568312956
I have fixed the spotless checks. And all the checks have passed currently. Please take a look at it if you have time. Thank you so much!
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