Individual skill
running-mutation-tests
Execute mutation testing to evaluate test suite effectiveness. Use when performing specialized testing. Trigger with phrases like "run mutation tests", "test the tests", or "validate test effectiveness".
plugins/testing/mutation-test-runner/skills/running-mutation-tests/SKILL.md
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- Last checked
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- ai Repository topic
- automation Repository topic
- claude-code Repository topic
- devops Repository topic
- mcp Repository topic
- ai-agents Repository topic
- anthropic Repository topic
- claude-code-plugins Repository topic
- developer-tools Repository topic
- llm Repository topic
- testing Declared skill tag
- mutation-tests Declared skill tag
- testing Derived category
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SKILL.mdcore · 5,699 bytesSKILL.mdcore · 5,699 bytesassets/README.mddoc · 386 bytesassets/config_template.yamlasset · 2,655 bytesassets/example_mutation_results.jsonasset · 4,084 bytesassets/mutation_report_template.mddoc · 6,882 bytesreferences/README.mddoc · 63 bytesscripts/README.mddoc · 502 bytesscripts/mutation_analyzer.pyruns · 4,795 bytes
Read excerpt
# Mutation Test Runner
## Overview
Execute mutation testing to evaluate the effectiveness of a test suite by systematically introducing small code changes (mutants) and checking whether existing tests detect them. A killed mutant means the tests caught the change; a surviving mutant reveals a testing gap.
## Prerequisites
- Mutation testing framework installed (Stryker, mutmut, PITest, or go-mutesting)
- Existing test suite with reasonable pass rate (all tests must pass before mutation testing)
- Source code with functions and logic suitable for mutation (conditionals, arithmetic, return values)
- Sufficient CI resources (mutation testing runs the test suite once per mutant -- CPU-intensive)
- Configuration file for the mutation tool specifying target files and test commands
## Instructions