def test_minfo(self):
        """
        Two L{dns.Record_MINFO} instances compare equal if and only if they
        have the same rmailbx, emailbx, and ttl.
        """
        # Vary the rmailbx
        self._equalityTest(
            dns.Record_MINFO(b'rmailbox', b'emailbox', 10),
            dns.Record_MINFO(b'rmailbox', b'emailbox', 10),
            dns.Record_MINFO(b'someplace', b'emailbox', 10))
        # Vary the emailbx
        self._equalityTest(
            dns.Record_MINFO(b'rmailbox', b'emailbox', 10),
            dns.Record_MINFO(b'rmailbox', b'emailbox', 10),
            dns.Record_MINFO(b'rmailbox', b'something', 10))
        # Vary the ttl
        self._equalityTest(
            dns.Record_MINFO(b'rmailbox', b'emailbox', 10),
            dns.Record_MINFO(b'rmailbox', b'emailbox', 10),
            dns.Record_MINFO(b'rmailbox', b'emailbox', 100))

        Two L{dns.Record_MINFO} instances compare equal if and only if they
        have the same rmailbx, emailbx, and ttl.
        
stackoverflow/venv/lib/python3.6/site-packages/twisted/names/test/test_dns.py