What are some good testing libraries for JavaScript?

What are some good testing libraries for JavaScript?

There are several great testing libraries for JavaScript! Some popular ones include Jest, Mocha, and Jasmine. Do you have a specific type of testing in mind?

I'm mainly interested in unit testing.

For unit testing, Jest is highly recommended due to its simplicity and built-in features like mocking. Mocha is also a solid choice if you prefer more flexibility.

What about integration testing?

For integration testing, you might want to look into Testing Library, which works well with React and other frameworks. Cypress is also excellent for end-to-end testing.

Can you give me some examples of how to use Jest?

Sure! You can start by installing Jest and then create a simple test file. For example, to test a function, you can use `test('description', () => { expect(functionToTest()).toBe(expectedValue); });