Qt Creator provides the QML analyzer, which lets you perform runtime analysis of your Qt applications. You can see a graph (in time) of how your application is running, as well as dive into the details about how your application spends its time drawing, binding to variables, and executing JavaScript.
Qt Creator also integrates well with Valgrind on Linux, letting you look for memory leaks in your application. Using Valgrind on Linux, you can see the blocks that were allocated but not freed, and, more importantly, see how big they were and where they were allocated in the code, giving you a head start in determining why they were not freed. Since Valgrind only works on Linux, we also discussed another memory leak detector called Visual Leak Detector, which works great on Windows.
Other than that, we have also learned how to implement automated unit testing using Qt Test...