There has been a latent bug forever in QtDBus that would make a signal disconnect actually disconnect too much. The reason is that disconnectNotify() is called every time a signal is disconnected from a receiver, but that doesn't mean it was the last connection. This test checks whether disconnecting from voidSignal() to our test receiver will also disconnect from exitLoop(). If it does, we'll get a timeout. I could have implemented it with two receivers, but in the buggy case, it would always fail first in the timeout verification. Change-Id: I5766d8a38594eb25e65b304913251303660fad41 Reviewed-by: Frederik Gladhorn <frederik.gladhorn@digia.com>