4.x: Unit test lambdaification 10 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: 4.597 bits/char
Verdict: ✅ Mid-4 beauty detected (thoughtful human code!)

Changed files entropy:

src/main/java/io/reactivex/rxjava4/core/Flowable.java: 4.779
src/main/java/io/reactivex/rxjava4/observers/BaseTestConsumer.java: 4.498
src/test/java/io/reactivex/rxjava4/completable/CompletableTest.java: 4.618
src/test/java/io/reactivex/rxjava4/exceptions/CompositeExceptionTest.java: 4.747
src/test/java/io/reactivex/rxjava4/flowable/FlowableCollectTest.java: 4.599
src/test/java/io/reactivex/rxjava4/flowable/FlowableNullTests.java: 4.909
src/test/java/io/reactivex/rxjava4/flowable/FlowableTests.java: 4.697
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableFromPublisherTest.java: 4.846
src/test/java/io/reactivex/rxjava4/internal/operators/completable/CompletableMaterializeTest.java: 4.836
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableAllTest.java: 4.708
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableBlockingTest.java: 4.726
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableBufferTest.java: 4.687
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableCombineLatestTest.java: 4.691
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableCountTest.java: 5.010
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableDebounceTest.java: 4.775
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableDelaySubscriptionOtherTest.java: 4.673
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableFlatMapTest.java: 4.462
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableMapNotificationTest.java: 4.299
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowablePublishTest.java: 4.359
src/test/java/io/reactivex/rxjava4/internal/operators/flowable/FlowableReplayEagerTruncateTest.java: 4.664

✅ 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 98.79%. Comparing base (ff3ccd6) to head (d231a3a).

Additional details and impacted files

@@             Coverage Diff              @@
##                4.x    #8146      +/-   ##
============================================
+ Coverage     98.77%   98.79%   +0.02%     
- Complexity     6872     6873       +1     
============================================
  Files           769      769              
  Lines         48659    48659              
  Branches       6516     6516              
============================================
+ Hits          48062    48072      +10     
+ Misses          456      453       -3     
+ Partials        141      134       -7     

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