What are the best practices for async testing in Jest?

What are the best practices for async testing in Jest?

When testing asynchronous code in Jest, it's important to use async/await or return a promise to ensure proper handling.

Can you give me an example of using async/await in a Jest test?

Sure! Here's a simple example:

test('fetches data successfully', async () => {
  const data = await fetchData();
  expect(data).toEqual(expectedData);
});

What should I do if my async test fails?

If an async test fails, check the promise rejection and ensure that you're handling errors properly. Use try/catch for better debugging.

Are there any specific Jest matchers for async tests?

Yes! You can use matchers like resolves and rejects to assert the resolved or rejected value of a promise.