running-mutation-tests

## Overview This skill empowers Claude to execute mutation testing, providing insights into the effectiveness of a test suite. By introducing small changes (mutations) into the code and running the tests, it determines if the tests are capable of detecting these changes. This helps identify weaknesses in the test suite and improve overall code quality. ## How It Works 1. **Mutation Generation**: The plugin automatically introduces mutations (e.g., changing `+` to `-`) into the code. 2. **Test Execution**: The test suite is run against the mutated code. 3. **Result Analysis**: The plugin analyzes which mutations were "killed" (detected by tests) and which "survived" (were not detected). 4. **Reporting**: A mutation score is calculated, and surviving mutants are identified for further investigation. ## When to Use This Skill This skill activates when you need to: - Validate the effectiveness of a test suite. - Identify gaps in test coverage. - Improve the mutation score of a project. - Analyze surviving mutants to strengthen tests. ## Examples ### Example 1: Improving Test Coverage User request: "Run mutation testing on the validator module and suggest improvements to the tests." The skill will: 1. Execute mutation tests on the validator module. 2. Analyze the results and identify surviving mutants, indicating areas where tests are weak. 3. Suggest specific improvements to the tests based on the surviving mutants, such as adding new test cases or modifying existing on...