I worked on QT application where we observed the opposite. As typical with QT the code was a collection of components that were glued together in the main appl

I worked on QT application where we observed the opposite. As typical with QT the code was a collection of components that were glued together in the main application. For testing it turned out adding few flags to the application was enough to implement unit and integration test driver. Surely there were few ifs, but the code was very readable and such design allowed very straightforward implementation of integration tests.