How do I test async code in React?

How do I test async code in React?

To test async code in React, you can use libraries like Jest and React Testing Library. They provide utilities to handle async operations.

Can you give me an example of testing a component that fetches data?

Sure! You can mock the fetch call and use waitFor to assert the expected outcome after the async operation.

What about error handling in async tests?

You can simulate errors by mocking the fetch to reject and then assert that the error state is handled correctly in your component.

Are there any best practices for testing async code?

Yes, always ensure to clean up after tests, use async/await for better readability, and avoid using setTimeout in tests.