def test_maxSize(self):
        """
        Two L{dns._EDNSMessage} instances compare equal if they have the same
        maxSize.
        """
        self.assertNormalEqualityImplementation(
            self.messageFactory(maxSize=2048),
            self.messageFactory(maxSize=2048),
            self.messageFactory(maxSize=1024),
            )

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