How Mutation Testing Catches Bugs Your Tests Miss
from Software Testing with Fexingo: QA, Automation, and Reliable Software Engineering Hosted by Fexingo
In this episode of Software Testing with Fexingo, Lucas and Luna explore mutation testing — a technique that systematically introduces faults into your code to measure whether your tests actually catch them. They break down how mutation testing works, why it reveals gaps that code coverage metrics miss, and how teams can integrate it into their CI pipeline without slowing down development. Using a real example from an open-source Python project, they show how mutation testing uncovered a silent bug in a date validation function that had 100% statement coverage. Lucas and Luna also discuss common pitfalls like equivalent mutants and test flakiness, and share practical advice for getting started with tools like PIT and Stryker. If you rely on code coverage as your quality gate, this episode will change how you think about test effectiveness. #MutationTesting #SoftwareTesting #QA #Automation #CodeCoverage #TestQuality #CIPipeline #PIT #Stryker #OpenSource #Python #TestAutomation #BugDetection #EquivalentMutants #FexingoBusiness #BusinessPodcast #Technology #SoftwareEngineering Keep every episode free: buymeacoffee.com/fexingo
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