def test_unspecFamilyIpv4(self):
        """
        Test that UNSPEC does not return endpoint data for IPv4 connections.
        """
        header = _makeHeaderIPv4(famProto=b'\x01')
        info = _v2parser.V2Parser.parse(header)
        self.assertFalse(info.source)
        self.assertFalse(info.destination)

        Test that UNSPEC does not return endpoint data for IPv4 connections.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/protocols/haproxy/test/test_v2parser.py