def test_removeNonexistentTrigger(self):
        self.assertRaises(ValueError, self.event.removeTrigger, object())
L{_ThreePhaseEvent.removeTrigger} should raise L{ValueError} when given
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/test/test_internet.py/ThreePhaseEventTests.test_removeNonexistentTrigger