React Testing Library And Jest-: The Complete Guide

// Test const customRender = (ui, providerProps, ...renderOptions ) => return render( <ThemeProvider ...providerProps>ui</ThemeProvider>, renderOptions )

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

// Don't use act directly (userEvent handles it) act(() => render(<Component />) ) // Test const customRender = (ui, providerProps,

test('consumes context', () => const getByText = customRender(<ThemedComponent />, providerProps: initialTheme: 'dark' ) expect(getByText(/dark mode/i)).toBeInTheDocument() ) import renderHook, act from '@testing-library/react' const useCounter = (initial = 0) => const [count, setCount] = useState(initial) const increment = () => setCount(c => c + 1) return count, increment // Test const customRender = (ui

const button = screen.getByRole('button', name: /click me/i ) expect(button).toBeInTheDocument()

test('toggles state on click', async () => const user = userEvent.setup() render(<Toggle />)