def setUp(self):
        self._oldCallIntoPAM = pamauth.callIntoPAM
        pamauth.callIntoPAM = self.callIntoPAM
Replace L{pamauth.callIntoPAM} with a dummy implementation with
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/test/test_newcred.py/PluggableAuthenticationModulesTest.setUp