How do I handle errors in Mocha tests?

How do I handle errors in Mocha tests?

In Mocha, you can handle errors by using the 'done' callback or returning a promise. Would you like an example?

Yes, please provide an example using the 'done' callback.

Sure! Here's an example:

it('should return an error', function(done) {
  someAsyncFunction(function(err, result) {
    if (err) return done(err);
    // assertions go here
    done();
  });
});

This way, if there's an error, it will be passed to Mocha.

What about using promises instead?

When using promises, you can simply return the promise from the test. For example:

it('should return a resolved promise', function() {
  return someAsyncFunction().then(result => {
    // assertions go here
  });
});

Mocha will handle the promise resolution for you.