def test_simple(self):
        """
        When L{finger.Finger} receives a CR LF terminated line, it responds
        with the default user status message - that no such user exists.
        """
        self.protocol.dataReceived(b"moshez\r\n")
        self.assertEqual(
            self.transport.value(),
            b"Login: moshez\nNo such user\n")

        When L{finger.Finger} receives a CR LF terminated line, it responds
        with the default user status message - that no such user exists.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/test/test_finger.py