About
The Mutation Testing skill empowers developers to look beyond traditional code coverage metrics by assessing the actual quality and resilience of their test suites. By automatically introducing subtle code changes—known as 'mutants'—into the codebase and verifying whether existing tests detect them, it provides a comprehensive mutation score that highlights logic gaps, missing validations, and boundary condition failures. This skill is indispensable for high-stakes projects where passing tests aren't enough, helping you ensure that your test suite is robust enough to catch real-world regressions across JavaScript, TypeScript, Java, and Python environments.
