What is Jest testing and how does it work?

What is Jest testing and how does it work?

Jest is a JavaScript testing framework designed for simplicity. It works by running tests in parallel and provides a rich API for assertions.

What are the main features of Jest?

Some main features of Jest include zero configuration, snapshot testing, and built-in code coverage.

How do I set up Jest in my project?

You can set up Jest by installing it via npm with npm install --save-dev jest and adding a test script in your package.json.

Can I use Jest with React?

Yes, Jest works seamlessly with React and is often used with testing libraries like React Testing Library.

What are some best practices for writing tests with Jest?

Best practices include writing clear and descriptive test names, keeping tests isolated, and using before/after hooks for setup.