| #!/usr/bin/env python3 |
| # |
| # Copyright (c) 2016, The OpenThread Authors. |
| # All rights reserved. |
| # |
| # Redistribution and use in source and binary forms, with or without |
| # modification, are permitted provided that the following conditions are met: |
| # 1. Redistributions of source code must retain the above copyright |
| # notice, this list of conditions and the following disclaimer. |
| # 2. Redistributions in binary form must reproduce the above copyright |
| # notice, this list of conditions and the following disclaimer in the |
| # documentation and/or other materials provided with the distribution. |
| # 3. Neither the name of the copyright holder nor the |
| # names of its contributors may be used to endorse or promote products |
| # derived from this software without specific prior written permission. |
| # |
| # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" |
| # AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| # ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE |
| # LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| # CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| # SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| # INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| # CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| # ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| # POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| import unittest |
| |
| import node |
| import config |
| import command |
| import mle |
| |
| LEADER = 1 |
| DUT_ROUTER1 = 2 |
| ROUTER2 = 3 |
| ROUTER24 = 24 |
| |
| |
| class Cert_5_2_06_RouterDowngrade(unittest.TestCase): |
| def setUp(self): |
| self.simulator = config.create_default_simulator() |
| |
| self.nodes = {} |
| for i in range(1, 25): |
| self.nodes[i] = node.Node(i, simulator=self.simulator) |
| self.nodes[i].set_panid() |
| self.nodes[i].set_mode('rsdn') |
| self.nodes[i].set_router_selection_jitter(1) |
| if i != DUT_ROUTER1: |
| self.nodes[i].set_router_upgrade_threshold(32) |
| self.nodes[i].set_router_downgrade_threshold(32) |
| |
| def tearDown(self): |
| for n in list(self.nodes.values()): |
| n.stop() |
| n.destroy() |
| self.simulator.stop() |
| |
| def test(self): |
| # 1 Ensure topology is formed correctly without ROUTER24. |
| self.nodes[LEADER].start() |
| self.simulator.go(5) |
| self.assertEqual(self.nodes[LEADER].get_state(), 'leader') |
| |
| for i in range(2, 24): |
| self.nodes[i].start() |
| self.simulator.go(5) |
| self.assertEqual(self.nodes[i].get_state(), 'router') |
| |
| # This method flushes the message queue so calling this method again |
| # will return only the newly logged messages. |
| dut_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1) |
| |
| # 2 ROUTER24: Attach to network. |
| # All reference testbed devices have been configured with downgrade threshold as 32 except DUT_ROUTER1, |
| # so we don't need to ensure ROUTER24 has a better link quality on |
| # posix. |
| self.nodes[ROUTER24].start() |
| self.simulator.go(5) |
| self.assertEqual(self.nodes[ROUTER24].get_state(), 'router') |
| |
| # 3 DUT_ROUTER1: |
| self.simulator.go(10) |
| self.assertEqual(self.nodes[DUT_ROUTER1].get_state(), 'child') |
| |
| # Verify it sent a Parent Request and Child ID Request. |
| dut_messages = self.simulator.get_messages_sent_by(DUT_ROUTER1) |
| dut_messages.next_mle_message(mle.CommandType.PARENT_REQUEST) |
| dut_messages.next_mle_message(mle.CommandType.CHILD_ID_REQUEST) |
| |
| # Verify it sent an Address Release Message to the Leader when it |
| # attached as a child. |
| msg = dut_messages.next_coap_message('0.02') |
| command.check_address_release(msg, self.nodes[LEADER]) |
| |
| # 4 & 5 |
| router1_rloc = self.nodes[DUT_ROUTER1].get_ip6_address( |
| config.ADDRESS_TYPE.RLOC |
| ) |
| self.assertTrue(self.nodes[LEADER].ping(router1_rloc)) |
| |
| |
| if __name__ == '__main__': |
| unittest.main() |