'When L{TimerService.stopService} is called while a call isn\'t in progress.
the L{Deferred} returned has already been fired.'

def test_stopServiceImmediately(self):

    self.timer.startService()
    self.deferred.callback(object())
    d = self.timer.stopService()
    self.assertIdentical(self.successResultOf(d), None)
