Summary
Covers the full stack of React component testing: React Testing Library queries, userEvent interactions, Vitest/Jest setup, MSW for network mocking, custom hook testing with renderHook, and accessibility assertions via jest-axe. The core philosophy is test user behavior, not implementation details, so you'll query by role and label instead of test IDs, and avoid inspecting internal state. Good coverage of async patterns (findBy, waitFor) and a practical section on when to stay in RTL versus jumping to Playwright component tests. The provider wrapping pattern and MSW setup examples are copy-paste ready. If you're migrating from Enzyme or setting up tests on a greenfield React app, this gives you opinionated defaults that actually work.
Install to Claude Code
npx -y skills add affaan-m/everything-claude-code --skill react-testing --agent claude-codeInstalls into .claude/skills of the current project.
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Agent, run crypto. Access onchain data & trade routes via 1inch.
Install now →Notes, actions and memory. Without a meeting bot. First month 100% off.
Download for free →Keep your Mac awake while Claude Code and 40+ AI agents run. Sleeps when they're idle.
One time payment $9 →Give your AI agent a complete email layer—sending, inbound inboxes, and sandbox testing.
Get 4K emails/month free →Integrate web data into your AI product. One API to scrape website & brand data.
Get API Key Now →Your agent targets a perfect 10 Code Health score. Deterministic. Every commit.
Try For Free →
