def test_parent(self):
        self.assertTrue(app.raw.apis['pet'].models['Pet']._parent_ is app.raw.apis['pet'])
        self.assertTrue(app.raw.apis['user'].apis['getUserByName']._parent_ is app.raw.apis['user'])
        self.assertTrue(app.raw.info._parent_ is app.raw)
make sure parent is assigned
dataset/ETHPy150Open mission-liao/pyswagger/pyswagger/tests/v1_2/test_spec.py/PropertyTestCase.test_parent