What are the key features of mocking in Jest?

What are the key features of mocking in Jest?

Jest provides powerful mocking capabilities, including automatic mocking, manual mocks, and mock functions.

Can you explain how to create a manual mock?

Sure! To create a manual mock, you can create a __mocks__ directory next to your module and define the mock implementation there.

What is the difference between jest.fn() and jest.spyOn()?

jest.fn() creates a new mock function, while jest.spyOn() creates a mock function that spies on an existing method.

How do I reset mocks between tests?

You can use jest.resetAllMocks() in the beforeEach block to reset all mocks before each test.