1. A computer-implemented method comprising: testing a graphical user interface (GUI) of an application with a test automation tool; and during runtime of the test automation tool, automatically overlaying a visual cue on the GUI, the visual cue pointing to a GUI object of the application and containing a comment regarding an event relating to the GUI object that is expected to occur in runtime, wherein automatically overlaying the visual cue on the GUI further comprises: incorporating an annotation method into the test automation tool; and passing information of the GUI object to the annotation method without intervention of a user testing the GUI.