The best way to understand what Test Kitchen does is to see it in action so we’re going to use it to help us write a simple Chef Infra cookbook. This cookbook will be complete with tests that verify the cookbook does what it’s supposed to do. Test Kitchen comes at the process of software development with an approach that embraces the idea that writing the tests first, watching them fail, and then writing the code to make them pass is a great way to go. Also known as red, green, refactor, it’s a great way to write quality software. By the end of this guide, you’ll be familiar with this approach.