tests/scripts/thread-cert/Cert_6_1_02_REEDAttach_MED.py

#!/usr/bin/env python3
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import unittest

import thread_cert
from command import check_parent_request
from command import check_child_id_request
from command import check_child_update_request_from_child
from command import CheckType
import config
import mle

LEADER = 1
REED = 2
MED = 3


class Cert_6_1_2_REEDAttach_MED(thread_cert.TestCase):
    TOPOLOGY = {
        LEADER: {
            'mode': 'rsdn',
            'panid': 0xface,
            'whitelist': [REED]
        },
        REED: {
            'mode': 'rsdn',
            'panid': 0xface,
            'router_upgrade_threshold': 0,
            'whitelist': [LEADER, MED]
        },
        MED: {
            'is_mtd': True,
            'mode': 'rsn',
            'panid': 0xface,
            'timeout': config.DEFAULT_CHILD_TIMEOUT,
            'whitelist': [REED]
        },
    }

    def test(self):
        self.nodes[LEADER].start()
        self.simulator.go(5)
        self.assertEqual(self.nodes[LEADER].get_state(), 'leader')

        self.nodes[REED].start()
        self.simulator.go(5)
        self.assertEqual(self.nodes[REED].get_state(), 'child')

        self.nodes[MED].start()

        self.simulator.go(5)
        self.assertEqual(self.nodes[MED].get_state(), 'child')
        self.assertEqual(self.nodes[REED].get_state(), 'router')
        med_messages = self.simulator.get_messages_sent_by(MED)

        # Step 2 - DUT sends MLE Parent Request
        msg = med_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
        check_parent_request(msg, is_first_request=True)

        # Step 4 - DUT sends MLE Parent Request again
        msg = med_messages.next_mle_message(mle.CommandType.PARENT_REQUEST)
        check_parent_request(msg, is_first_request=False)

        # Step 6 - DUT sends Child ID Request
        msg = med_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST,
                                            sent_to_node=self.nodes[REED])
        check_child_id_request(
            msg,
            address_registration=CheckType.CONTAIN,
            tlv_request=CheckType.CONTAIN,
            mle_frame_counter=CheckType.OPTIONAL,
            route64=CheckType.OPTIONAL,
        )

        # Wait additional DEFAULT_CHILD_TIMEOUT to ensure the keep-alive
        # message (child update request from MED) happens.
        self.simulator.go(config.DEFAULT_CHILD_TIMEOUT)
        med_messages = self.simulator.get_messages_sent_by(MED)

        # Step 8 - DUT sends Child Update messages
        msg = med_messages.next_mle_message(
            mle.CommandType.CHILD_UPDATE_REQUEST)
        check_child_update_request_from_child(
            msg,
            source_address=CheckType.CONTAIN,
            leader_data=CheckType.CONTAIN,
        )

        # Step 10 - Leader sends ICMPv6 echo request, to DUT link local address
        med_addrs = self.nodes[MED].get_addrs()
        for addr in med_addrs:
            if addr[0:4] == 'fe80':
                self.assertTrue(self.nodes[REED].ping(addr))


if __name__ == '__main__':
    unittest.main()