What to do next? We have seen many tools and several ways to approach the testing of a whole software application. These techniques are not trivial and usually require some time to master them, but they are not so difficult either! So, my advice is just to try to practice all the techniques presented in this book, in small pet projects at the beginning, where you can make mistakes and fail safely. Then, you can try to start introducing this testing approach in your daily work.

It is important that you get acquainted with these techniques from a practical perspective. Theory is not enough because you always need to answer the following question: Would this test suite give me enough of a return? And you cannot answer this question if you do not have a clear sense of the cost of building the test suite.

Finally, remember that technology changes. Things that nowadays are costly, such as testing the UI, were simply too cumbersome to do in the past, and maybe they will be simple to do...