def test_soa(self):
        """
        The repr of a L{dns.Record_SOA} instance includes all of the
        authority fields.
        """
        self.assertEqual(
            repr(dns.Record_SOA(mname=b'mName', rname=b'rName', serial=123,
                                refresh=456, retry=789, expire=10,
                                minimum=11, ttl=12)),
            "<SOA mname=mName rname=rName serial=123 refresh=456 "
            "retry=789 expire=10 minimum=11 ttl=12>")

        The repr of a L{dns.Record_SOA} instance includes all of the
        authority fields.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/names/test/test_dns.py