How do I write async tests using Mocha?

How do I write async tests using Mocha?

To write async tests in Mocha, you can use the 'done' callback or return a promise. Which method would you prefer?

Can you show me an example using the 'done' callback?

Sure! Here's a simple example:

it('should complete async operation', function(done) {
  setTimeout(function() {
    // Your test logic here
    done(); // Call done when the test is complete
  }, 1000);
});

What about using promises instead?

Using promises is straightforward. You can return a promise directly:

it('should complete async operation', function() {
  return new Promise((resolve, reject) => {
    // Your test logic here
    resolve(); // Resolve when the test is complete
  });
});