How can I test async functions using Mocha?

How can I test async functions using Mocha?

You can test async functions in Mocha by using the 'done' callback or returning a promise. Would you like an example?

Yes, please provide an example of both methods.

Sure! For the 'done' callback method, you can do something like this:

it('should return data', function(done) {
  asyncFunction().then(data => {
    assert.equal(data, expectedData);
    done();
  });
});

And for returning a promise:

it('should return data', function() {
  return asyncFunction().then(data => {
    assert.equal(data, expectedData);
  });
});

What if my async function throws an error?

If your async function throws an error, you can handle it using a try-catch block in an async test or by returning a rejected promise. Would you like to see an example?