How do I integrate Jest with my React application?

How do I integrate Jest with my React application?

To integrate Jest with your React application, you can start by installing Jest using npm or yarn. Run npm install --save-dev jest.

Do I need to configure anything after installation?

Yes, you may need to add a test script in your package.json file. It should look like this: "test": "jest".

What about testing components?

You can test React components using Jest along with React Testing Library. Install it with npm install --save-dev @testing-library/react.

Can you give me an example of a simple test?

Sure! Here's a simple test for a button component:

import { render, screen } from '@testing-library/react';
import MyButton from './MyButton';

test('renders button with text', () => {
  render(<MyButton />);
  const buttonElement = screen.getByText(/click me/i);
  expect(buttonElement).toBeInTheDocument();
});