4.x: Unit test lambdaification 8 of N

[akarnokd]

Will go over the unit tests in ASCII order of the classpath and classes.

Search regexp: new\s+\w+(?:\s*<(?:[\s\w<>(\[\])?,.?]|\s*<[\s\w<>(\[\])?,.?]*>)*>)?\s*\([^)]*\)\s*\{

/* NFI */ = Not Functional Interface so break the regexp pattern

If you complain instead of proposing a PR about "why not convert to method references" you'll be banned.

Related: #8080

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.732 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableConcatTest.java: 4.576
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableDelayTest.java: 4.866
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableDoOnTest.java: 4.687
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableFromActionTest.java: 4.649
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableFromCallableTest.java: 4.669
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableFromPublisherTest.java: 4.888
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableFromRunnableTest.java: 4.660
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableFromSupplierTest.java: 4.681
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableHideTest.java: 4.818
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableLiftTest.java: 4.855
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableMaterializeTest.java: 4.873
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableMergeIterableTest.java: 4.600
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableMergeTest.java: 4.587
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableObserveOnTest.java: 4.974
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableOnErrorXTest.java: 4.769
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletablePeekTest.java: 4.878
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableRepeatWhenTest.java: 5.013
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableResumeNextTest.java: 4.828
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableSafeSubscribeTest.java: 4.553
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableSubscribeOnTest.java: 4.892

✅ 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 98.78%. Comparing base (54cd5d4) to head (94ddfd5).

Additional details and impacted files

@@            Coverage Diff            @@
##                4.x    #8144   +/-   ##
=========================================
  Coverage     98.78%   98.78%           
  Complexity     6874     6874           
=========================================
  Files           769      769           
  Lines         48659    48659           
  Branches       6516     6516           
=========================================
  Hits          48067    48067           
+ Misses          456      455    -1     
- Partials        136      137    +1     

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