#!/usr/bin/env python3
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import unittest

import common
import config
import thread_cert

LEADER = 1
ROUTER = 2


class TestIPv6Fragmentation(thread_cert.TestCase):
    SUPPORT_NCP = False

    TOPOLOGY = {
        LEADER: {
            'mode': 'rdn',
            'panid': 0xcafe,
            'allowlist': [ROUTER]
        },
        ROUTER: {
            'mode': 'rdn',
            'panid': 0xcafe,
            'allowlist': [LEADER]
        },
    }

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

        self.nodes[ROUTER].start()
        self.simulator.go(config.ROUTER_STARTUP_DELAY)
        self.assertEqual(self.nodes[ROUTER].get_state(), 'router')

        mleid_leader = self.nodes[LEADER].get_ip6_address(config.ADDRESS_TYPE.ML_EID)
        mleid_router = self.nodes[ROUTER].get_ip6_address(config.ADDRESS_TYPE.ML_EID)

        self.nodes[LEADER].udp_start("::", common.UDP_TEST_PORT)
        self.nodes[ROUTER].udp_start("::", common.UDP_TEST_PORT)

        self.nodes[LEADER].udp_send(1952, mleid_router, common.UDP_TEST_PORT)
        self.simulator.go(5)
        self.nodes[ROUTER].udp_check_rx(1952)

        self.nodes[ROUTER].udp_send(1831, mleid_leader, common.UDP_TEST_PORT)
        self.simulator.go(5)
        self.nodes[LEADER].udp_check_rx(1831)

        self.nodes[ROUTER].udp_stop()
        self.nodes[LEADER].udp_stop()


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