jest-test

Generate, review, and improve Jest tests for TypeScript and JavaScript codebases.

1|Updated Feb 13, 2026
One-click install
npx skills add https://github.com/AgentCTO/claude-skills --skill jest-test
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: jest-test
Source: https://github.com/AgentCTO/claude-skills/tree/main/skills/jest-test
Command: npx skills add https://github.com/AgentCTO/claude-skills --skill jest-test

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes scripts (resource) and references (resource) components.

What problem does it solve?

This Skill streamlines the process of writing, reviewing, and enhancing Jest tests, ensuring robust and best-practice compliant test suites for JavaScript and TypeScript projects.

Core Features & Use Cases

  • Test Generation: Automatically writes Jest tests for functions, methods, and components.
  • Test Review & Refinement: Analyzes existing tests for anti-patterns, async safety, and coverage gaps.
  • Mocking Guidance: Provides examples and best practices for mocking dependencies.
  • Use Case: When you need to ensure a new feature has comprehensive test coverage, or when you want to improve the quality and maintainability of your existing test suite.

Quick Start

Use the jest-test skill to write tests for the calculateTotal function.

Frequently Asked Questions about jest-test

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write Jest tests for TypeScript and JavaScript functions?

To write Jest tests for TypeScript and JavaScript, you generate test suites focusing on best practices including test structure, matchers, and async testing, ensuring robust coverage for your codebase.

What are common Jest anti-patterns and how can I fix them?

Common Jest anti-patterns are identified by reviewing existing tests for async safety and coverage gaps. Refining these tests involves applying best practices to improve maintainability and eliminate anti-patterns.

Can I use this to generate mocking strategies for Jest unit tests?

Yes, you can generate mocking strategies for Jest unit tests. It provides specific examples and best practices for mocking dependencies, ensuring your tests remain isolated and reliable.

What is the best way to structure data-driven tests in Jest?

The best way to structure data-driven tests in Jest involves utilizing comprehensive reference patterns for detailed rules. This ensures your tests follow best practices for maintainability and robust coverage.

Does this Jest testing approach work for both JavaScript and TypeScript codebases?

Yes, this Jest testing approach works for both JavaScript and TypeScript codebases. It generates and reviews tests specifically tailored for both environments, ensuring robust test suites across your projects.