def test_provider(self):
        """
        The reactor instance returned by C{buildReactor} provides
        L{IReactorSocket}.
        """
        reactor = self.buildReactor()
        self.assertTrue(
            verify.verifyObject(IReactorSocket, reactor))

        The reactor instance returned by C{buildReactor} provides
        L{IReactorSocket}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/internet/test/test_socket.py