The test application creates a sub-surface tree consisting of overall
three surfaces:
* blue main surface
* red sub surface
* green sub surface to the red sub surface
All surfaces are in synchronized mode. There is a timer to turn the
green surface into yellow after five seconds.
Counter part for the copyClient test app: the pasteClient test app
creates and maps a shell surface and waits for selection announce,
initiates the copy/paste mechanismn and prints out what got pasted.
After success it closes itself.
The test application copyClient creates a ShellSurface, maps it as
fullscreen, renders a green buffer and when it gets pointer focus it
sets "foo" in mimetype "text/plain" into the selection.