The idea behind this unit test is to verify that no matter which signal
is sent to the greeter it doesn't return an exit code of 0 which would
indicate a successful authentication.
The test starts the greeter (needs to be installed) and waits 5 sec to
make sure that the greeter is really up and running. If the signal is
sent to early it's causing a CrashExit, which is fine but not the
expected result. There's an additional test to verify that the early sent
signal results in CrashExit.
REVIEW: 117893
Alex Richardson
Martin Gräßlin