Which test frameworks are compatible with this skill?

This skill is designed to work seamlessly with Jest, Vitest, and Mocha for unit/integration testing, and Stryker for mutation testing.

What is mutation testing in the context of this skill?

Mutation testing uses Stryker to introduce small bugs (mutants) into your code to see if your tests catch them. This skill helps you interpret those results to improve your test quality.

Can I use it for Test-Driven Development (TDD)?

Absolutely. The skill includes patterns for generating failing tests based on feature descriptions, allowing you to follow a strict TDD workflow with AI assistance.

Does this skill require an external AI model?

Yes, it uses the Gemini API (specifically Gemini Pro) to analyze code and generate test cases, requiring a valid Gemini API key.

Can it help me find untested parts of my code?

Yes, it can process JSON coverage reports and use AI to suggest specific test cases for code paths that are currently uncovered.

AI Test Generator

Name: AI Test Generator
Author: johnlindquist

byjohnlindquist

•

Security & Testing

Generates comprehensive unit tests, manages test suites, and performs coverage analysis using AI-driven patterns.

The AI Test Generator skill streamlines the entire testing lifecycle by automating the creation of robust unit, integration, and regression tests. It leverages AI to analyze source code and generate high-quality test scaffolds for frameworks like Jest, Vitest, and Mocha, covering happy paths, edge cases, and boundary conditions. Beyond simple generation, it facilitates advanced workflows such as TDD loops, automated coverage reporting, and mutation testing with Stryker to ensure your test suite is actually effective at catching bugs.

Key Features

01AI-powered unit test generation for TypeScript and JavaScript

02Advanced mutation testing to verify test suite quality

03Regression test generation from bug descriptions and git diffs

042 GitHub stars

05Multi-runner support including Jest, Vitest, and Mocha

06Automated coverage analysis and gap identification

Use Cases

01Rapidly increasing unit test coverage for complex legacy codebases

02Automating the 'Red' phase of TDD by generating failing tests from feature descriptions

03Verifying test suite reliability by identifying 'survived mutants' in critical business logic

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add johnlindquist/claude testgen

For use in Claude.ai and ChatGPT

Download Skill