Can you explain how mocking fetch works in JavaScript?

Can you explain how mocking fetch works in JavaScript?

Sure! Mocking fetch allows you to simulate API calls in your tests without making actual network requests.

Why would I want to mock fetch instead of using real API calls?

Mocking fetch helps you test your code in isolation, ensuring that tests run quickly and reliably without external dependencies.

How do I set up mocking for fetch in my tests?

You can use libraries like Jest or Sinon to mock fetch. For example, in Jest, you can use jest.mock('node-fetch').

Can you give me an example of a test using mocked fetch?

Absolutely! Here's a simple example: fetch.mockResponseOnce(JSON.stringify({ data: '12345' })); to mock a response.