def test_null(self):
        """
        The repr of a L{dns.Record_NULL} instance includes the repr of its
        payload and the TTL of the record.
        """
        self.assertEqual(
            repr(dns.Record_NULL(b'abcd', 123)),
            "<NULL payload='abcd' ttl=123>")

        The repr of a L{dns.Record_NULL} instance includes the repr of its
        payload and the TTL of the record.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/names/test/test_dns.py