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[nexus] migrate anycast locator test to Nexus (#12962)
This commit migrates the anycast locator test from the thread-cert functional tests to the Nexus simulation framework. The new Nexus test 'test_anycast_locator.cpp' covers: - Anycast Locator (ALOC) resolution for the Leader from all nodes. - Custom service ALOC resolution when only one node provides it. - Closest-node ALOC resolution when multiple nodes provide the same service in a line topology (LEADER-R1-R2-R3-R4). - Verification that nodes resolve to the nearest service instance. The original Python test 'test_anycast_locator.py' is removed as its functionality is now fully covered by the 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) 2021, 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 config
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import ipaddress
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import unittest
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import command
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import config
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import thread_cert
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# Test description:
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# This test verifies Anycast Locator functionality
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#
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# Topology:
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#
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# LEADER -- ROUTER1 -- ROUTER2 -- ROUTER3 -- ROUTER4
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#
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LEADER = 1
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ROUTER1 = 2
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ROUTER2 = 3
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ROUTER3 = 4
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ROUTER4 = 5
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SRV_ENT_NUMBER = '44970'
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SRV_SERVICE_DATA = '571234'
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SRV_SERVER_DATA = '00'
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class AnycastLocator(thread_cert.TestCase):
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USE_MESSAGE_FACTORY = False
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SUPPORT_NCP = False
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TOPOLOGY = {
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LEADER: {
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'name': 'LEADER',
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'mode': 'rdn',
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'allowlist': [ROUTER1]
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},
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ROUTER1: {
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'name': 'ROUTER1',
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'mode': 'rdn',
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'allowlist': [LEADER, ROUTER2]
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},
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ROUTER2: {
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'name': 'ROUTER2',
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'mode': 'rdn',
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'allowlist': [ROUTER1, ROUTER3]
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},
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ROUTER3: {
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'name': 'ROUTER3',
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'mode': 'rdn',
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'allowlist': [ROUTER2, ROUTER4]
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},
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ROUTER4: {
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'name': 'ROUTER4',
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'mode': 'rdn',
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'allowlist': [ROUTER3]
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},
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}
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def test(self):
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leader = self.nodes[LEADER]
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router1 = self.nodes[ROUTER1]
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router2 = self.nodes[ROUTER2]
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router3 = self.nodes[ROUTER3]
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router4 = self.nodes[ROUTER4]
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nodes = [leader, router1, router2, router3, router4]
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#
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# 0. Start the leader and routers
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#
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leader.start()
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self.simulator.go(config.LEADER_STARTUP_DELAY)
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self.assertEqual(leader.get_state(), 'leader')
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for node in nodes[1:]:
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node.start()
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self.simulator.go(config.ROUTER_STARTUP_DELAY)
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self.assertEqual(node.get_state(), 'router')
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#
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# 1. Locate leader ALOC from all nodes
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#
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leader_aloc = leader.get_addr_leader_aloc()
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for node in nodes:
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result = node.locate(leader_aloc)
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self.assertEqual(result[0], leader.get_mleid())
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self.assertEqual(int(result[1], 0), leader.get_addr16())
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#
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# 2. Add a service on router4 and locate its ALOC
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#
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router4.add_service(SRV_ENT_NUMBER, SRV_SERVICE_DATA, SRV_SERVER_DATA)
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router4.register_netdata()
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self.simulator.go(5)
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services = leader.get_services()
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self.assertEqual(len(services), 1)
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service_aloc = router4.get_ip6_address(config.ADDRESS_TYPE.ALOC)[0]
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for node in nodes:
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result = node.locate(service_aloc)
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self.assertEqual(result[0], router4.get_mleid())
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self.assertEqual(int(result[1], 0), router4.get_addr16())
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#
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# 3. Add same service on leader and ensure we locate the closest ALOC destination
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#
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leader.add_service(SRV_ENT_NUMBER, SRV_SERVICE_DATA, SRV_SERVER_DATA)
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leader.register_netdata()
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self.simulator.go(5)
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services = leader.get_services()
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self.assertEqual(len(services), 2)
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# leader and router1 should locate leader as closest service ALOC,
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# router3 and router4 should locate router4. router2 is in middle
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# and can locate either one.
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for node in [leader, router1]:
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result = node.locate(service_aloc)
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self.assertEqual(result[0], leader.get_mleid())
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self.assertEqual(int(result[1], 0), leader.get_addr16())
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for node in [router3, router4]:
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result = node.locate(service_aloc)
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self.assertEqual(result[0], router4.get_mleid())
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self.assertEqual(int(result[1], 0), router4.get_addr16())
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result = router2.locate(service_aloc)
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self.assertTrue(result[0] in [leader.get_mleid(), router4.get_mleid()])
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self.assertTrue(int(result[1], 0) in [leader.get_addr16(), router4.get_addr16()])
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if __name__ == '__main__':
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unittest.main()
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