Learning Redux

Mocking

There are cases where your application would make requests to the outside world, such as fetching posts from an API. When running our tests, we still want to be able to see if the request would succeed, but not actually make the request. This is where mocking comes in handy.

There are two ways you can define mock functions with Jest:

• Creating a mock function by calling jest.fn()
• require() a mocked component via jest.mock('moduleName')