How can I use Sinon for mocking in my tests?

How can I use Sinon for mocking in my tests?

You can use Sinon.js to create mocks, stubs, and spies in your tests. Would you like a code example?

Yes, please provide a code example for mocking a function.

Sure! Here's a simple example:

const sinon = require('sinon');

function myFunction(callback) {
    callback('Hello, World!');
}

const mockCallback = sinon.fake();
myFunction(mockCallback);

console.log(mockCallback.called); // true
console.log(mockCallback.firstCall.args[0]); // 'Hello, World!'

What are the differences between mocks and stubs?

Mocks are used to verify behavior, while stubs are used to control behavior. Mocks can assert calls, whereas stubs just replace functions.