Mutation Testing
/mjuːˈteɪʃən ˈtestɪŋ/
Definition
A technique that introduces small code changes (mutations) to verify tests catch the error — measures test quality, not coverage.
Example in context
"Mutation score: 72% of code changes are caught by tests — coverage was 85% but many tests weren't meaningful."
Related terms
Practice this term
Master Mutation Testing in context by working through exercises in the Testing & QA module. You'll see the term used in real engineering scenarios with multiple-choice, fill-in-the-blank, and matching drills.