Complete Guide: React Testing Library And Jest- The

act(() => jest.advanceTimersByTime(1000) )

// Use userEvent instead of fireEvent await user.click(button) React Testing Library and Jest- The Complete Guide

await user.type(screen.getByLabelText(/email/i), 'user@example.com') await user.type(screen.getByLabelText(/password/i), 'secret123') await user.click(screen.getByRole('button', name: /submit/i )) act(() => jest

act(() => result.current.increment() )

const button = screen.getByRole('button') expect(button).toHaveTextContent('OFF') 'secret123') await user.click(screen.getByRole('button'

export default testEnvironment: 'jsdom', setupFilesAfterEnv: ['<rootDir>/src/setupTests.js'], transform: ts,

await user.click(button) expect(button).toHaveTextContent('OFF') ) test('shows error for invalid email', async () => const user = userEvent.setup() render(<SignupForm />) await user.type(screen.getByLabelText(/email/i), 'invalid') await user.click(screen.getByRole('button', name: /submit/i ))