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[nexus] migrate ipv6 source selection test to nexus (#12924)
This commit migrates the `test_ipv6_source_selection.py` cert test to the Nexus simulation framework. To support this migration, the Nexus framework was extended to allow verifying the local (source) address on which an ICMP Echo Reply is received. This is achieved by adding an overload to `SendAndVerifyEchoRequest` that accepts an expected source address. The new Nexus test `test_ipv6_source_selection.cpp` covers the following scenarios: - RLOC source for RLOC destination - ML-EID source for ALOC destination - ML-EID source for ML-EID destination - Link-local source for Link-local destination - ML-EID source for Realm-local multicast destination (ff03::1) - GUA source for GUA destination - GUA source for external address (via default route) The original Python test script is removed as its functionality is now fully covered by the new Nexus test.
This commit is contained in:
Jonathan Hui
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#!/usr/bin/env python3
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#
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# Copyright (c) 2019, The OpenThread Authors.
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# All rights reserved.
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#
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# Redistribution and use in source and binary forms, with or without
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# modification, are permitted provided that the following conditions are met:
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# 1. Redistributions of source code must retain the above copyright
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# notice, this list of conditions and the following disclaimer.
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# 2. Redistributions in binary form must reproduce the above copyright
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# notice, this list of conditions and the following disclaimer in the
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# documentation and/or other materials provided with the distribution.
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# 3. Neither the name of the copyright holder nor the
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# names of its contributors may be used to endorse or promote products
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# derived from this software without specific prior written permission.
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#
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# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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# POSSIBILITY OF SUCH DAMAGE.
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#
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import unittest
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import config
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import ipv6
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import thread_cert
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LEADER = 1
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ROUTER = 2
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class TestIPv6SourceSelection(thread_cert.TestCase):
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SUPPORT_NCP = False
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TOPOLOGY = {
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LEADER: {
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'mode': 'rdn',
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'panid': 0xcafe,
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'allowlist': [ROUTER]
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},
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ROUTER: {
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'mode': 'rdn',
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'panid': 0xcafe,
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'allowlist': [LEADER]
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},
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}
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def test(self):
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self.nodes[LEADER].start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual(self.nodes[LEADER].get_state(), 'leader')
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self.nodes[ROUTER].start()
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self.simulator.go(config.ROUTER_STARTUP_DELAY)
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self.assertEqual(self.nodes[ROUTER].get_state(), 'router')
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leader_aloc = self.nodes[LEADER].get_addr_leader_aloc()
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leader_mleid = self.nodes[LEADER].get_mleid()
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leader_rloc = self.nodes[LEADER].get_rloc()
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leader_linklocal = self.nodes[LEADER].get_linklocal()
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multicast_addr = 'ff03::1'
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external_addr = '2007::1'
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router_rloc = self.nodes[ROUTER].get_rloc()
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router_linklocal = self.nodes[ROUTER].get_linklocal()
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router_mleid = self.nodes[ROUTER].get_mleid()
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# Source check - RLOC source for RLOC destination
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self.assertTrue(self.nodes[ROUTER].ping(leader_rloc))
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
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msg.assertSentFromSourceAddress(router_rloc)
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# Source check - ML-EID source for ALOC destination
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self.assertTrue(self.nodes[ROUTER].ping(leader_aloc))
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
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msg.assertSentFromSourceAddress(router_mleid)
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# Source check - ML-EID source for ML-EID destination
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self.assertTrue(self.nodes[ROUTER].ping(leader_mleid))
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
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msg.assertSentFromSourceAddress(router_mleid)
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# Source check - link local source source for link local address
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self.assertTrue(self.nodes[ROUTER].ping(leader_linklocal))
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
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msg.assertSentFromSourceAddress(router_linklocal)
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# Source check - ML-EID source for realmlocal multicast destination
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self.assertTrue(self.nodes[ROUTER].ping(multicast_addr))
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
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msg.assertSentFromSourceAddress(router_mleid)
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# GUA and default gateway
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self.nodes[LEADER].add_prefix('2001::/64', 'paros')
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self.nodes[LEADER].register_netdata()
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self.simulator.go(5)
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# Set lowpan context of sniffer
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self.simulator.set_lowpan_context(1, '2001::/64')
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# Flushes message queue before next ping
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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# Source check - GUA source for GUA destination
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leader_gua = self.nodes[LEADER].get_addr("2001::/64")
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router_gua = self.nodes[ROUTER].get_addr("2001::/64")
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self.assertTrue(leader_gua is not None)
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self.assertTrue(router_gua is not None)
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self.assertTrue(self.nodes[ROUTER].ping(leader_gua))
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
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msg.assertSentFromSourceAddress(router_gua)
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# Source check - GUA source for external address (default route)
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self.nodes[ROUTER].ping(external_addr)
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router_msgs = self.simulator.get_messages_sent_by(ROUTER)
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msg = router_msgs.get_icmp_message(ipv6.ICMP_ECHO_REQUEST)
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msg.assertSentFromSourceAddress(router_gua)
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if __name__ == '__main__':
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unittest.main()
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