def test_index(self):
        """
        L{ServerProtocol.index} writes the control sequence ending in
        the 8-bit code table coordinates 4, 4.

        Note that ECMA48 5th Edition removes C{IND}.
        """
        self.protocol.index()
        self.assertEqual(self.transport.value(),
                         self.ESC + _ecmaCodeTableCoordinate(4, 4))

        L{ServerProtocol.index} writes the control sequence ending in
        the 8-bit code table coordinates 4, 4.

        Note that ECMA48 5th Edition removes C{IND}.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/conch/test/test_insults.py