How do we build software that does what our users want? And how do we keep it working well while we’re writing it?
With outside-in development, you sketch the app at its outermost layer—the user interface or network protocol—and work your way inward to the classes and methods that contain the logic behind the interface. This approach helps you make sure you’re using everything you build.
RSpec 3 makes it easy to do outside-in development. This part of the book is going to transform you into a testing powerhouse. By building an app and testing it with RSpec, you’ll add several tools to your toolbox that will make you more effective.