Today we're going to create a library to use a simple RESTfull API for a great project called Gzaas. [...] Ok. The API is a simple RESTfull API, so we can use it with a simple curl interface. A few lines of PHP and it will run smoothly. But Gzaas is cool so we're going to create a cool interface too. This days I'm involved into TDD world, so we're going to create the API wrapper using TDD. Let's start.

He starts with his tests, defining checks for fonts, patterns and styles and moves into a sample call that sets configuration options for background color, shadows and visibility. You can find out more about what the service has to offer by reading the documentation and the client Gonzalo has written for it in github.