Individual skill
react-testing
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.
auc/skill_library/bundled/react-testing/SKILL.md
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- testing Derived category
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# React Testing
Comprehensive React testing patterns for behavior-focused component tests, custom hook tests, accessibility assertions, and network-level mocking.
## When to Activate
- Writing tests for React components, custom hooks, or pages
- Adding test coverage to legacy untested components
- Migrating from Enzyme or class-component-era patterns to React Testing Library
- Setting up Vitest or Jest for a new React project
- Mocking HTTP requests in tests
- Asserting accessibility violations
- Deciding which tests belong in RTL vs Playwright Component Testing vs full E2E
## Core Principle