testing-mutation
Testing Mutation
Overview
Use this skill to quantify test effectiveness and prioritize strengthening weak assertions.
Scope Boundaries
- Use when pass-only test status is insufficient for confidence.
- Typical requests:
Find weak tests that do not fail when behavior is changed.Use surviving mutants to guide assertion hardening.Quantify test robustness for critical modules.
- Do not use when:
- Baseline unit/integration coverage is missing.
- The primary goal is load or capacity benchmarking (
performance-*).
Inputs
- Existing tests and module criticality
- Mutation tooling constraints and runtime budget
- Release risk tolerance
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