Can I run this on specific parts of my project?

Yes, you can target mutation testing on specific modules, files, or high-complexity areas where test integrity is most critical.

What is a mutation score?

A mutation score is a metric representing the percentage of injected mutations that were successfully 'killed' (detected) by your tests; a higher score indicates a more reliable test suite.

Is this different from standard code coverage?

Yes. While code coverage tells you which lines of code were executed, mutation testing tells you if your tests actually validate the correctness of the logic on those lines.

What is mutation testing?

Mutation testing is a high-level testing method where small, intentional errors are introduced into your code to see if your existing tests can detect them, measuring the true effectiveness of your test suite.

How does this skill help improve my code?

It identifies 'surviving mutants'—logic changes that your tests failed to catch—allowing you to write more robust test cases for those specific vulnerabilities.

Mutation Testing Specialist

Name: Mutation Testing Specialist
Author: intent-solutions-io

byintent-solutions-io

0•

安全与测试

Validates test suite effectiveness by introducing code mutations and measuring the ability of existing tests to detect logic changes.

The Mutation Testing Specialist skill empowers Claude to go beyond traditional code coverage metrics by assessing the actual detection power of your test suites. By automatically injecting subtle logic changes—or mutations—into your codebase and running existing tests against them, this skill identifies 'surviving mutants' that highlight specific gaps in your testing logic. It provides actionable insights and mutation scores, helping developers strengthen their tests for critical modules, improve software reliability, and ensure that test suites are truly capable of catching regressions.

主要功能

010 GitHub stars

02Calculation of comprehensive mutation scores for test quality metrics

03Targeted analysis of critical modules and high-complexity code

04Actionable suggestions for improving test cases based on results

05Automated mutation generation for logic-level code changes

06Identification of surviving mutants to pinpoint test weaknesses

使用场景

01Assessing the real effectiveness of unit tests beyond simple line coverage

02Identifying edge cases that existing tests fail to catch in critical services

03Strengthening the reliability of complex validation and authentication logic

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add intent-solutions-io/plugins-nixtla skill-adapter

For use in Claude.ai and ChatGPT

Download Skill