[JimmyLiuJia]

Related #8075.

Move onErrorRace and onCompleteRace from MaybeTimeoutTest and MaybeTimeoutPublisherTest into their corresponding IsolatedTest classes, following the naming requested in the issue. The four methods keep their bodies, assertions, race loops and cleanup unchanged; all 38 existing test methods are preserved. This is a movements-only batch, with no production or test-runner configuration changes.

The new classes use JUnit @Isolated, so these race tests do not overlap with other classes when same-JVM parallel execution is enabled. In particular, onErrorRace installs the shared RxJavaPlugins error handler. No default-baseline failure or full-suite parallel stability is claimed.

Verified locally on Windows with OpenJDK 26.0.2.1 and Gradle 9.8.0:

• gradle test --tests "io.reactivex.rxjava4.internal.operators.maybe.MaybeTimeout*" --stacktrace --no-daemon: 38 passed before and after the move; inherited disabled tests account for 2 and 4 skips.
• gradle test --tests "io.reactivex.rxjava4.validators.*" --stacktrace --no-daemon: 272 passed, 27 skipped.
• gradle build --stacktrace --no-daemon --rerun-tasks: passed, including JUnit (13,368 passed, 871 skipped), TestNG/TCK (4,001 passed, 1,795 skipped), Checkstyle and JaCoCo.
• gradle javadoc --stacktrace --no-daemon and git diff --check: passed.

The first full build hit CompletableIsolatedTest.repeatNormal (expected 6 calls, observed 5). That unmodified test passed alone on the clean target baseline; the subsequent complete build passed with the original settings and every task rerun. Both results were retained. Upstream Ubuntu/Zulu CI remains separate from this local validation.

AI assistance was used to prepare and check this change.

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.768 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

src/test/java/io/reactivex/rxjava4/internal/operators/maybe/MaybeTimeoutIsolatedTest.java: 4.786
src/test/java/io/reactivex/rxjava4/internal/operators/maybe/MaybeTimeoutPublisherIsolatedTest.java: 4.784
src/test/java/io/reactivex/rxjava4/internal/operators/maybe/MaybeTimeoutPublisherTest.java: 4.739
src/test/java/io/reactivex/rxjava4/internal/operators/maybe/MaybeTimeoutTest.java: 4.764

✅ No secrets or suspicious high-entropy strings found.

Mid-4 beauty heuristic in action — powered by our entropy chats! 😊

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 98.62%. Comparing base (9cb9e1b) to head (3442b3e).

Additional details and impacted files

@@             Coverage Diff              @@
##                4.x    #8321      +/-   ##
============================================
+ Coverage     98.60%   98.62%   +0.01%     
+ Complexity     7157     7155       -2     
============================================
  Files           824      824              
  Lines         50822    50822              
  Branches       6920     6920              
============================================
+ Hits          50115    50124       +9     
+ Misses          475      468       -7     
+ Partials        232      230       -2     

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