React Testing Library __top__ May 2026

// Wait for data to appear const userName = await screen.findByText(/John Doe/i) expect(userName).toBeInTheDocument() })

React Testing Library encourages writing accessible, user-focused tests that give you real confidence in your application. The key is always asking: "Is this how a user would interact with and observe this component?" react testing library

// Submit await userEvent.click(screen.getByRole('button', { name: /submit/i })) // Wait for data to appear const userName = await screen

// Navigate to profile await userEvent.click(screen.getByRole('link', { name: /profile/i })) expect(screen.getByText(/user profile/i)).toBeInTheDocument() react testing library

// Wait for loading to complete expect(screen.getByText(/loading/i)).toBeInTheDocument()

expect(handleSubmit).toHaveBeenCalledWith({ email: 'test@example.com', password: 'password123' }) }) import { renderHook, act } from '@testing-library/react' test('useCounter hook increments', () => { const { result } = renderHook(() => useCounter(0))