Web Development with Node.JS and MongoDB (Video 30)

This video tutorial introduces Sinon.js, a library for testing JavaScript code, focusing on mocks, stubs, and spies. It explains how to use mocks to simulate behavior and set expectations, and discusses the importance of dependency injection in testing. The video also covers setting up tests, using mock databases, and testing controllers with Super Test. Finally, it provides a brief overview of what will be covered in the next video about Karma.

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