Test modal dialog with Qt Test

Question

I am trying to write a unit test for a GUI application using the QTestLib. The problem is that one of the slots creates a modal dialog using exec() and I found

Answer 1

You can keep the interaction in the same thread by delaying its execution until the dialog event loop starts.

For example just before the exec() call, you use either QTimer::singleShot with 0 as interval or QMetaObject::invokeMethod with connection type Qt::QueuedConnection to invoke the slot that needs to be executed while the dialog is shown.