def test_interface(self):
        """
        L{server.Request} instances provide L{iweb.IRequest}.
        """
        self.assertTrue(
            verifyObject(iweb.IRequest, server.Request(DummyChannel(), True)))

        L{server.Request} instances provide L{iweb.IRequest}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/web/test/test_web.py