https://nalar.dev/tags/mutation-testing/ Recent content in Mutation Testing on Nalar Hugo en-us Thu, 03 Sep 2026 00:00:00 +0700 https://nalar.dev/mutation-testing-for-stronger-test-suites/ Thu, 03 Sep 2026 00:00:00 +0700 https://nalar.dev/mutation-testing-for-stronger-test-suites/ <p>A test suite can execute every important line of code and still miss serious defects. Coverage tells you which code ran, but it does not tell you whether the tests would notice if that code behaved incorrectly.</p> <p>Mutation testing examines that gap. It makes small, systematic changes to production code and runs the tests against each changed version. If the tests fail, the mutation is killed. If they still pass, the mutation survives and points to a place where the suite may not distinguish correct behaviour from incorrect behaviour.</p>