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JavaScript Testing Patterns

JavaScript Testing Patterns is an agent skill (a SKILL.md file) from wshobson/agents. Implement comprehensive testing strategies using Jest, Vitest, and Testing Library for unit tests, integration tests, and end-to-end testing with mocking, fixtures, and test-driven… It works with Claude Code, Codex, Cursor, GitHub Copilot and OpenCode and has 41,725 GitHub stars across a repository of 7 listed skills.

github.com/wshobson/agents/plugins/javascript-typescript/skills/javascript-testing-patterns (opens in a new tab)

Data as of from the GitHub API and skills.sh; description from the skill's SKILL.md. Report an error

View on GitHub (opens in a new tab)View on skills.sh (opens in a new tab)

Add this skill

Claude

This repository is a Claude Code plugin marketplace. In Claude Code:

/plugin marketplace add wshobson/agents
/plugin install javascript-typescript@claude-code-workflows

In the Claude apps, zip the javascript-testing-patterns folder and upload it under Customize > Skills > + > Upload a skill (code execution must be on).

ChatGPT / Codex

Codex reads skills from .agents/skills/ in a repo or ~/.agents/skills/ for every project:

git clone --depth 1 https://github.com/wshobson/agents.git
cp -r agents/plugins/javascript-typescript/skills/javascript-testing-patterns .agents/skills/javascript-testing-patterns   # repo; ~/.agents/skills for all projects

Standalone skills also load in the ChatGPT desktop app.

Cursor

Cursor loads skills from .cursor/skills/ (or ~/.cursor/skills/) and also reads .claude/skills/:

git clone --depth 1 https://github.com/wshobson/agents.git
cp -r agents/plugins/javascript-typescript/skills/javascript-testing-patterns .cursor/skills/javascript-testing-patterns   # project; ~/.cursor/skills for all projects

Source (checked Oct 7, 2026): code.claude.com/docs/en/skills (opens in a new tab), code.claude.com/docs/en/plugin-marketplaces (opens in a new tab), support.claude.com/en/articles/12512180-using-skills-in-claude (opens in a new tab), learn.chatgpt.com/docs/build-skills (opens in a new tab), cursor.com/docs/context/skills (opens in a new tab)

What this skill does

Implement comprehensive testing strategies using Jest, Vitest, and Testing Library for unit tests, integration tests, and end-to-end testing with mocking, fixtures, and test-driven development. Use when writing JavaScript/TypeScript tests, setting up test infrastructure, or implementing TDD/BDD workflows. Comprehensive guide for implementing robust testing strategies in JavaScript/TypeScript applications using modern testing frameworks and best practices.

When it triggers

  • Use when writing JavaScript/TypeScript tests, setting up test infrastructure, or implementing TDD/BDD workflows.

More skills in wshobson/agents

7 skills are listed from this repository.

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FAQ

JavaScript Testing Patterns FAQ

Still curious? Email info@appsgit.com.

How do I install the JavaScript Testing Patterns skill?

In Claude Code, run /plugin marketplace add wshobson/agents and then /plugin install javascript-typescript@claude-code-workflows. For Codex or Cursor, copy the javascript-testing-patterns folder into .agents/skills/ or .cursor/skills/.

Is the JavaScript Testing Patterns skill free?

Yes. The repository is open source under the MIT license.

Is JavaScript Testing Patterns maintained?

The repository's most recent commit was on Oct 17, 2026. appsgit only lists skills from repositories with a commit in the last six months.