How do I handle errors in async Jest tests?

How do I handle errors in async Jest tests?

You can handle errors in async Jest tests by using try-catch blocks or by returning a rejected promise.

Can you show me an example of using try-catch?

Sure! Here's a simple example:

test('async error handling', async () => {
  try {
    await someAsyncFunction();
  } catch (error) {
    expect(error).toBeDefined();
  }
});

What about using rejected promises?

You can return a rejected promise like this:

test('async error handling', () => {
  return expect(someAsyncFunction()).rejects.toThrow();
});

Are there any best practices for async testing?

Yes, always ensure your tests are isolated, use clear error messages, and avoid side effects that can affect other tests.