def failIfSubstring(self, substring, astring, msg=None):
        return self.failIfIn(substring, astring, msg)
Check that get_choices and get_flatchoices interact with
dataset/ETHPy150Open kuri65536/python-for-android/python-modules/twisted/twisted/trial/unittest.py/_Assertions.failIfSubstring--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/lib/django-1.5/tests/regressiontests/model_fields/tests.py/ChoicesTests.test_choices_and_field_display