Hello, are you still there? Did we just blow your mind? Are you feeling confused? Elated? Questioning everything you've ever known? Don't worry; this feeling goes away after a few years. It's hard to believe that in a single chapter of this book, we have walked you through creating a fully functional application that can actually be used for business purposes. Before you run off and try to sell this application, there are some other things to keep in mind. First, you're not the only reader of this book, and we don't want to flood the market with property management applications. Second, in order to package or deploy this app, you're going to need test coverage. So keep reading, because the next chapter is an important one!

In the next and final chapter, we'll review the concept of test coverage. Test coverage is, at the most basic level, code written to run your code to detect errors. However, as professional developers, we tend to strive for functional tests that test your code by...