What are some examples of using async testing libraries?

What are some examples of using async testing libraries?

Async testing libraries are essential for testing asynchronous code. For example, in JavaScript, you can use Jest with async/await syntax.

Can you show me a simple test case using Jest?

Sure! Here's a simple example:

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

What about using Mocha for async tests?

In Mocha, you can use the done callback or return a promise. Here's an example using a promise:

it('should fetch data', () => {
  return fetchData().then(data => {
    expect(data).to.equal(expectedData);
  });
});

Are there any best practices for async testing?

Yes! Always ensure your tests are isolated, use proper timeouts, and clean up after tests to avoid side effects.