react-testing-librarylisted

# React Testing Library Skill ## When to Use - Testing React components - Simulating user interactions - Writing maintainable tests ## Critical Patterns - Use screen and queries - Prefer user-event over fireEvent - Test from user perspective ## Decision Tree - Render or shallow? → Always render - Need async? → Use findBy\* - Accessibility? → Use role/label queries ## Edge Cases - Portal/modal testing - Async UI updates - Custom hook testing