def METHOD_NAME(self):
    # GIVEN
    destination_ipv6 = any_ipv6_address()
    message_info = common.MessageInfo()
    message_info.destination_ipv6 = destination_ipv6
    # WHEN
    actual_destination_ipv6 = message_info.destination_ipv6
    # THEN
    self.assertEqual(
        ipaddress.ip_address(bytes(destination_ipv6)),
        actual_destination_ipv6,
    )