def test_nonAuthoritativeMessageDecode(self):
        """
        The L{dns.RRHeader} instances created by a message from a
        non-authoritative message byte string are marked as not authoritative.
        """
        m = self.messageFactory()
        m.fromStr(MessageNonAuthoritative.bytes())

        self.assertEqual(
            m, self.messageFactory(**MessageNonAuthoritative.kwargs()))

        The L{dns.RRHeader} instances created by a message from a
        non-authoritative message byte string are marked as not authoritative.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/names/test/test_dns.py