def test_loadModuleWithBothCustom(self):
        """
        Check that if C{testSuite} and C{test_suite} are both present in a
        module then C{testSuite} gets priority.
        """
        from twisted.trial.test import mockcustomsuite3
        suite = self.loader.loadModule(mockcustomsuite3)
        self.assertEqual('testSuite', getattr(suite, 'name', None))

        Check that if C{testSuite} and C{test_suite} are both present in a
        module then C{testSuite} gets priority.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/trial/test/test_loader.py