Skills
.Work. You
Rest

test-mutate

Community

Reveal test gaps by mutating code.

Software Engineering#automation#testing#qa#code-quality#mutation-testing
Authorchrisallenlane
Version1.0.0
Installs0

System Documentation

What problem does it solve?

Mutation testing workflows identify whether your tests actually detect introduced bugs by systematically mutating source code and measuring the ability of the test suite to catch those mutations. This approach reveals gaps in test coverage that traditional line coverage metrics can miss, enabling targeted improvements to tests and higher software reliability.

Core Features & Use Cases

  • Multi-session progress tracking via the .test-mutations.json file to persist state across runs.
  • Automatic discovery of test commands and source modules to mutate, reducing setup effort.
  • Spawns specialized agents (qa-test-mutator and SWE SME) to mutate code, evaluate tests, and generate targeted tests for surviving mutations.
  • Clear reporting and guidance for selecting survivors to address, with an optional commit workflow.

Quick Start

Run /test-mutate in your project to start a mutation-testing session and follow the prompts to mutate modules.

Dependency Matrix

Required Modules

None required

Components

Standard package

💻 Claude Code Installation

Recommended: Let Claude install automatically. Simply copy and paste the text below to Claude Code.

Please help me install this Skill:
Name: test-mutate
Download link: https://github.com/chrisallenlane/claude-swe-workflows/archive/main.zip#test-mutate

Please download this .zip file, extract it, and install it in the .claude/skills/ directory.
View Source Repository

Agent Skills Search Helper

Install a tiny helper to your Agent, search and equip skill from 223,000+ vetted skills library on demand.