Bummer! This is just a preview. You need to be signed in with a Basic account to view the entire video.
In this video, you'll use a testing tool called Chai to learn how BDD and the red-green-refactor cycle helps you write code that really does what it's supposed to. Chai is an expectation library that includes special functions that throw an error when an expectation is not met.
You need to sign up for Treehouse in order to download course files.Sign up