Improve Character default mutator neighborhood exploration#58
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Abhishek21g wants to merge 1 commit into
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Improve Character default mutator neighborhood exploration#58Abhishek21g wants to merge 1 commit into
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mutate previously only jumped among 8 hard-coded seeds. Build a non-identity candidate set with scalar ±1, case flip, class-local adjacency, and generate-pool jumps so coverage-guided search can take small steps and reach beyond the seed set.
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Summary
Fixes #48.
Character.defaultMutator.mutatepreviously only returned one of 8 hard-coded seeds, ignoring the input. Mutation now builds a non-identity candidate set (scalar ±1, case flip, class-local adjacency, generate-pool jumps, plus seeds) and picks uniformly — matching the PortMutator / EmptyStringMutator pattern.Verification
characterDefaultMutatorReachesBeyondSeedsinSingleValueMutatorTestsswift testis blocked by package-benchmark/jemalloc on stock Xcode; please run the suite / filtered mutator tests in CINotes
Mutator source lives under
Sources/FuzzCore/...(issue path cited PropertyTestingKit/).