In this chapter, we’ve taken our first proper look at the unit testing project, and you’ve seen how to implement unit testing using the Qt Test framework. We’ve also discussed the importance of programming to interfaces to enable mocking. Now we have unit tests in place for our main data classes, so if we ever accidentally change the behavior, the unit tests will fail and highlight a potential problem for us.
As we discussed, this is not a book about test driven development, and we will sometimes cut corners and go against the advice in this chapter to keep the explanation of other concepts as simple as possible, but I do urge you to implement unit testing of some kind in your projects if you can, as it is a very valuable practice that is always worth the additional time investment. Some developers like the rigor of full-blown TDD, whereas others prefer...