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React Testing

React Testing is an agent skill (a SKILL.md file) from affaan-m/ECC. React component testing with React Testing Library, Vitest/Jest, MSW for network mocking, accessibility assertions with axe, and the decision boundary between component… It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 274,402 GitHub stars across a repository of 10 listed skills.

github.com/affaan-m/ECC/skills/react-testing (opens in a new tab)

  • Multi-skill repo
  • Plugin marketplace
  • Testing & QA
  • Actively maintained
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 affaan-m/ECC
/plugin install ecc@ecc

In the Claude apps, zip the react-testing 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/affaan-m/ECC.git
cp -r ECC/skills/react-testing .agents/skills/react-testing   # 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/affaan-m/ECC.git
cp -r ECC/skills/react-testing .cursor/skills/react-testing   # 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

React component testing with React Testing Library, Vitest/Jest, MSW for network mocking, accessibility assertions with axe, and the decision boundary between component tests and Playwright/Cypress end-to-end runs. Use when writing or fixing tests for React components, hooks, or pages. Comprehensive React testing patterns for behavior-focused component tests, custom hook tests, accessibility assertions, and network-level mocking.

When it triggers

  • Use when writing or fixing tests for React components, hooks, or pages.

More skills in affaan-m/ECC

10 skills are listed from this repository.

Similar skills

More testing & qa skills

All Testing & QA

FAQ

React Testing FAQ

Still curious? Email info@appsgit.com.

What is the React Testing skill?

React Testing is an agent skill (a SKILL.md file) from affaan-m/ECC. React component testing with React Testing Library, Vitest/Jest, MSW for network mocking, accessibility assertions with axe, and the decision boundary between component… It works with Claude Code, Codex, Cursor, Gemini CLI, GitHub Copilot and OpenCode and has 274,402 GitHub stars across a repository of 10 listed skills. Its SKILL.md lives at github.com/affaan-m/ECC/skills/react-testing.

How do I install the React Testing skill?

In Claude Code, run /plugin marketplace add affaan-m/ECC and then /plugin install ecc@ecc. For Codex or Cursor, copy the react-testing folder into .agents/skills/ or .cursor/skills/.

Is the React Testing skill free?

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

Is React Testing maintained?

The repository's most recent commit was on Oct 2, 2026. Its latest release is v2.2.3. appsgit only lists skills from repositories with a commit in the last six months.