#!/usr/bin/env python3
#
#  Copyright (c) 2021, The OpenThread Authors.
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#
import logging
import unittest

import config
import thread_cert

# Test description:
#   This test verifies bi-directional connectivity between Thread end device
#   and infra host via an Border Router (FED)
#
# Topology:
#    ----------------(eth)--------------------
#           |                 |
#          BR (FED)          HOST
#           |
#        Leader
#

BR = 1
LEADER = 2
HOST = 3


class TestBorderRouterAsFed(thread_cert.TestCase):
    USE_MESSAGE_FACTORY = False

    TOPOLOGY = {
        BR: {
            'name': 'BR',
            'allowlist': [LEADER],
            'is_otbr': True,
            'version': '1.2',
            'router_eligible': False,
        },
        LEADER: {
            'name': 'LEADER',
            'allowlist': [BR],
            'version': '1.2',
        },
        HOST: {
            'name': 'Host',
            'is_host': True
        },
    }

    def test(self):
        br = self.nodes[BR]
        leader = self.nodes[LEADER]
        host = self.nodes[HOST]

        host.start(start_radvd=False)
        self.simulator.go(5)

        leader.start()
        self.simulator.go(config.LEADER_STARTUP_DELAY)
        self.assertEqual('leader', leader.get_state())

        br.start()
        self.simulator.go(5)
        self.assertEqual('child', br.get_state())

        self.simulator.go(config.BORDER_ROUTER_STARTUP_DELAY)
        self.assertEqual('child', br.get_state())

        # Leader can ping to/from the Host on infra link.
        self.assertTrue(leader.ping(host.get_ip6_address(config.ADDRESS_TYPE.ONLINK_ULA)[0]))
        self.assertTrue(host.ping(leader.get_ip6_address(config.ADDRESS_TYPE.OMR)[0], backbone=True))

        self.simulator.go(5)


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