def test_recAv(self):
        """
        Two L{dns.Message} instances compare equal if they have the same recAv
        flag.
        """
        self.assertNormalEqualityImplementation(
            self.messageFactory(recAv=1),
            self.messageFactory(recAv=1),
            self.messageFactory(recAv=0),
        )

        Two L{dns.Message} instances compare equal if they have the same recAv
        flag.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/names/test/test_dns.py