def test_addDuringTrigger(self):
        self.event.addTrigger('during', self.trigger, self.arg)
        self.assertEqual(
            self.event.during,
            [(self.trigger, (self.arg,), {})])
L{_ThreePhaseEvent.addTrigger} should accept C{'during'} as a phase, a
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/test/test_internet.py/ThreePhaseEventTests.test_addDuringTrigger