In this chapter, we discussed the need to test application behavior instead of implementation details. By testing the expected business behavior, our tests can still be useful in the long run, even if the underlying website is completely rewritten in a new programming language or framework. We got familiar with the BDD principle and got comfortable with a tool that implemented the BDD ideas called Cucumber. Furthermore, we used the power of our BDD tools to define our application's behavior in such a way that we are able to test both the full browser, mobile, and API versions of our application.

In the next chapter, we will discuss the page objects and how to provide a reusable framework for our tests to interact with the website.