What is mutation testing in CI/CD?
Mutation testing is a technique used to evaluate the quality of software tests by introducing small changes (mutations) to the code and checking if the tests can detect these changes.
How does it improve test coverage?
It helps identify weaknesses in test cases by revealing which tests fail to catch introduced mutations, thus guiding improvements.
Can you give an example of mutation testing in action?
Sure! If you have a function that adds two numbers, a mutation might change the addition operator to a subtraction operator. If your tests fail to catch this, it indicates a gap in your test coverage.
What tools can I use for mutation testing?
Popular tools include Stryker for JavaScript, PIT for Java, and MutPy for Python. These tools automate the mutation testing process.
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