How do I mock external modules in Jest?

How do I mock external modules in Jest?

You can use jest.mock() to mock external modules. Just call it at the top of your test file.

Can you give me an example of mocking a specific module?

Sure! If you want to mock a module named axios, you can do it like this: jest.mock('axios');.

What if I want to mock a specific function from that module?

You can provide a mock implementation like this: axios.get = jest.fn().mockResolvedValue({ data: 'response' });.

Is there a way to restore the original implementation after the test?

Yes! You can use jest.restoreAllMocks() in the afterEach block to restore the original implementations.