4.x: Unit test lambdaification 21 of N

[akarnokd]

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

IntelliJ: Inspect -> RedundantCast, Inspect -> Anonymous type can be replaced by lambda
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: 4.742 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

src/jmh/java/io/reactivex/rxjava4/core/XMapYPerf.java: 5.007
src/test/java/io/reactivex/rxjava4/internal/operators/mixed/SingleFlatMapObservableTest.java: 4.697
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleAmbTest.java: 4.643
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleCacheTest.java: 4.750
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatMapCompletableTest.java: 4.860
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatMapMaybeTest.java: 4.797
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatMapTest.java: 4.764
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatPublisherTest.java: 4.922
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatTest.java: 4.713
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleContainstTest.java: 4.835
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleCreateTest.java: 4.325
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDelayTest.java: 4.753
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDematerializeTest.java: 4.818
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDetachTest.java: 4.656
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoAfterSuccessTest.java: 4.789
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoAfterTerminateTest.java: 4.789
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoFinallyTest.java: 4.809
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoOnTerminateTest.java: 4.808
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoOnTest.java: 4.663
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleErrorTest.java: 4.895

✅ No secrets or suspicious high-entropy strings found.

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

[github-actions]

🐷 TruffleHog + Entropy Beauty Scan

Average entropy of changed code: 4.742 bits/char
Verdict: ⚠️ Consider review — entropy outside sweet spot

Changed files entropy:

src/jmh/java/io/reactivex/rxjava4/core/XMapYPerf.java: 5.007
src/test/java/io/reactivex/rxjava4/internal/operators/mixed/SingleFlatMapObservableTest.java: 4.697
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleAmbTest.java: 4.643
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleCacheTest.java: 4.750
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatMapCompletableTest.java: 4.860
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatMapMaybeTest.java: 4.797
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatMapTest.java: 4.764
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatPublisherTest.java: 4.922
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleConcatTest.java: 4.713
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleContainstTest.java: 4.835
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleCreateTest.java: 4.325
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDelayTest.java: 4.753
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDematerializeTest.java: 4.818
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDetachTest.java: 4.656
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoAfterSuccessTest.java: 4.789
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoAfterTerminateTest.java: 4.789
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoFinallyTest.java: 4.809
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoOnTerminateTest.java: 4.808
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleDoOnTest.java: 4.663
src/test/java/io/reactivex/rxjava4/internal/operators/single/SingleErrorTest.java: 4.895

✅ 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 98.77%. Comparing base (4034581) to head (b199281).

Additional details and impacted files

@@             Coverage Diff              @@
##                4.x    #8163      +/-   ##
============================================
+ Coverage     98.74%   98.77%   +0.02%     
- Complexity     6939     6943       +4     
============================================
  Files           773      773              
  Lines         48994    48994              
  Branches       6586     6586              
============================================
+ Hits          48381    48392      +11     
+ Misses          444      439       -5     
+ Partials        169      163       -6     

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