What are the best practices for mutation testing?

What are the best practices for mutation testing?

Mutation testing is a technique used to evaluate the quality of software tests. Best practices include: 1. Use a variety of mutation operators to cover different scenarios. 2. Focus on high-risk areas of your code. 3. Ensure your tests are robust enough to catch mutations. 4. Regularly review and update your mutation tests.

Can you explain what mutation operators are?

Mutation operators are rules that define how to modify the code to create mutants. Common operators include changing arithmetic operators, negating boolean expressions, or removing statements. Each operator helps to simulate potential faults in the code.

How do I integrate mutation testing into my CI/CD pipeline?

To integrate mutation testing into your CI/CD pipeline, you can use tools like PIT or MutPy. Set up your pipeline to run mutation tests after unit tests, and configure it to fail if the mutation score is below a certain threshold.

What tools do you recommend for mutation testing?

Some popular tools for mutation testing include PIT for Java, Stryker for JavaScript, and MutPy for Python. Each tool has its own features, so choose one that fits your project's needs.