What are the best practices for mocking async functions in Jest?

What are the best practices for mocking async functions in Jest?

When mocking async functions in Jest, it's important to use jest.fn() to create mock functions and ensure they return promises.

Can you give me an example of how to mock an async function?

Sure! You can use jest.fn().mockResolvedValue(value) to mock a function that resolves a promise with a specific value.

What if I need to mock a function that rejects a promise?

You can use jest.fn().mockRejectedValue(error) to mock a function that rejects with a specific error.

Are there any common pitfalls to avoid when mocking async functions?

Yes, make sure to always await your async functions in tests to avoid unhandled promise rejections.