May 31, 2026 How to Kill a Surviving Mutant When You Don't Understand What It Changed Mutation testing found a survivor and you have no idea what the mutation even does. deep-divesmutation-testingtest-writingdebugging
May 30, 2026 Auth code needs 90% mutation coverage. Your string utils don't. Why enforcing a single mutation score across your entire codebase is a mistake, and how to set per-module thresholds that match actual risk. deep-divesmutation-testingauthtest-quality
May 29, 2026 Your Tests Pass. Your Mutation Score Is 40%. Here's What Surviving Mutants Are Actually Telling You. Code coverage says you're safe. Mutation testing says your tests are mostly decoration. Here's how surviving mutants expose the gap, and how to close it. deep-divesmutation-testingsurviving-mutantstest-quality
May 28, 2026 Mutation Testing in Rust Works, but Your Compile Times Will Hate You cargo-mutants finds the tests that only pretend to verify your code. deep-divesmutation-testingrustcargo-mutantstest-quality
May 27, 2026 Mutation testing takes 4 hours. How do teams actually use it in CI? Most teams don't run full mutation testing suites on every commit. deep-divesmutation-testingci-cdtest-quality
May 16, 2026 The AI Safety Stack: Types, Contracts, Property Tests, and Mutation Gates If you want AI-generated code to survive production, do not rely on code review alone. ai-engineeringsafety-stacktypesdesign-by-contractproperty-based-testingmutation-testing
May 15, 2026 Why Great Engineering Ideas Stayed Niche Until AI Made Them Economical Design by contract, property-based testing, mutation testing, and model checking were not bad ideas. They were too expertise-heavy to sustain. ai-engineeringsoftware-reliabilitydesign-by-contractproperty-based-testingmutation-testing
