How do I set up Jest for my React app?

How do I set up Jest for my React app?

To set up Jest for your React app, you first need to install Jest and its dependencies. You can do this by running npm install --save-dev jest babel-jest @testing-library/react @testing-library/jest-dom.

Do I need to configure anything in my package.json?

Yes, you should add a test script in your package.json. It should look like this: "scripts": { "test": "jest" }.

How do I write a simple test for a React component?

You can write a simple test using the Testing Library. For example, to test a button component, you can use render and screen to check if it renders correctly.

Can I run tests in watch mode?

Absolutely! You can run Jest in watch mode by using the command npm test -- --watch.