def test_invalid_app_path(self):
        app = self.router.add_app('django.conrib.admin')
        self.assertTrue(app is None)
no slug
dataset/ETHPy150Open rapidsms/rapidsms/rapidsms/router/blocking/tests/test_app.py/RouterAppTest.test_invalid_app_path--crossover with--dataset/ETHPy150Open nitely/Spirit/spirit/topic/tests.py/TopicViewTest.test_topic_detail_view_no_slug