304 lines
8.2 KiB
Python
304 lines
8.2 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# test_cspf_topo1.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2022 by Orange
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# Author: Olivier Dugeon <olivier.dugeon@orange.com>
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#
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"""
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test_cspf_topo1.py: Test the FRR Constraint Shortest Path First algorithm.
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+------------+
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| R1 |
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| 10.0.225.1 |
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+------------+
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r1-eth0| |r1-eth1
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10.0.0.0/24| |10.0.1.0/24
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| |2001:db8:1:/64
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r2-eth0| |r2-eth1
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+------------+ +------------+
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| R2 |r2-eth2 r3-eth0| R3 |
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| 10.0.255.2 +------------------+ 10.0.255.3 |
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| | 10.0.3.0/24 | |
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+------------+ 2001:db8:3:/64 +------+-----+
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r2-eth3| r3-eth1|
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10.0.4.0/24| |
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r4-eth0| 2001:db8:5:/64|
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+------------+ |
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| R4 |r4-eth1 |
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| 10.0.255.4 +-------------------------+
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+------------+
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"""
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import os
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import sys
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import json
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from functools import partial
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# Save the Current Working Directory to find configuration files.
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CWD = os.path.dirname(os.path.realpath(__file__))
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sys.path.append(os.path.join(CWD, "../"))
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# pylint: disable=C0413
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# Import topogen and topotest helpers
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from lib import topotest
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from lib.topogen import Topogen, TopoRouter, get_topogen
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from lib.topolog import logger
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# and Finally pytest
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import pytest
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pytestmark = [pytest.mark.isisd]
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def build_topo(tgen):
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"Build function"
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# Create 4 routers
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for routern in range(1, 5):
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tgen.add_router("r{}".format(routern))
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# Interconect router 1 and 2 with 2 links
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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switch = tgen.add_switch("s2")
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switch.add_link(tgen.gears["r1"])
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switch.add_link(tgen.gears["r2"])
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# Interconect router 3 and 2
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switch = tgen.add_switch("s3")
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switch.add_link(tgen.gears["r3"])
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switch.add_link(tgen.gears["r2"])
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# Interconect router 4 and 2
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switch = tgen.add_switch("s4")
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switch.add_link(tgen.gears["r4"])
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switch.add_link(tgen.gears["r2"])
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# Interconnect router 3 and 4
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switch = tgen.add_switch("s5")
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switch.add_link(tgen.gears["r3"])
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switch.add_link(tgen.gears["r4"])
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def setup_module(mod):
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"Sets up the pytest environment"
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logger.info("\n\n---- Starting CSPF tests ----\n")
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tgen = Topogen(build_topo, mod.__name__)
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tgen.start_topology()
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router_list = tgen.routers()
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for rname, router in router_list.items():
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router.load_config(
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TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
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)
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router.load_config(
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TopoRouter.RD_ISIS, os.path.join(CWD, "{}/isisd.conf".format(rname))
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)
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if rname == "r1":
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router.load_config(
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TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format("r1"))
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)
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# Initialize all routers.
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tgen.start_router()
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def teardown_module():
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"Teardown the pytest environment"
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tgen = get_topogen()
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tgen.stop_topology()
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logger.info("\n\n---- CSPF tests End ----\n")
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def compare_ted_json_output(tgen, rname, fileref):
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"Compare TED JSON output"
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logger.info('Comparing router "%s" TED output', rname)
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filename = "{}/reference/{}".format(CWD, fileref)
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expected = json.loads(open(filename).read())
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command = "show sharp ted json"
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# Run test function until we get an result. Wait at most 60 seconds.
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test_func = partial(topotest.router_json_cmp, tgen.gears[rname], command, expected)
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_, diff = topotest.run_and_expect(test_func, None, count=60, wait=2)
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assertmsg = '"{}" TED JSON output mismatches the expected result'.format(rname)
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assert diff is None, assertmsg
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def compare_cspf_output(tgen, rname, fileref, src, dst, cost, bw=""):
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"Compare CSPF output"
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logger.info('Comparing router "%s" CSPF output', rname)
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filename = "{}/reference/{}".format(CWD, fileref)
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expected = open(filename).read()
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command = "show sharp cspf source {} destination {} {} {}".format(
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src, dst, cost, bw
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)
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# Run test function until we get an result. Wait at most 60 seconds.
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test_func = partial(
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topotest.router_output_cmp, tgen.gears[rname], command, expected
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)
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result, diff = topotest.run_and_expect(test_func, "", count=5, wait=2)
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assert result, "CSPF output mismatches the expected result on {}:\n{}".format(
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rname, diff
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)
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def setup_testcase(msg):
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"Setup test case"
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logger.info(msg)
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tgen = get_topogen()
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# Skip if previous fatal error condition is raised
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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return tgen
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# Note that all routers must discover the same Network Topology, so the same TED.
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def test_step1():
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"Step1: Check initial topology"
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tgen = setup_testcase("Step1: test initial IS-IS TE Data Base import")
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tgen.net["r1"].cmd('vtysh -c "sharp import-te"')
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compare_ted_json_output(tgen, "r1", "sharp-ted.json")
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def test_step2():
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"Step2: Test CSPF from r1 to r4 for IPv4 with various metric"
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tgen = setup_testcase("Step2: CSPF(r1, r4, IPv4)")
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compare_cspf_output(
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tgen, "r1", "cspf-ipv4-metric.txt", "10.0.0.1", "10.0.255.4", "metric 50"
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)
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compare_cspf_output(
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tgen, "r1", "cspf-ipv4-te-metric.txt", "10.0.255.1", "10.0.4.4", "te-metric 50"
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)
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compare_cspf_output(
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tgen, "r1", "cspf-ipv4-delay.txt", "10.0.255.1", "10.0.255.4", "delay 50000"
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)
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compare_cspf_output(
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tgen,
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"r1",
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"cspf-ipv4-delay.txt",
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"10.0.255.1",
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"10.0.255.4",
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"delay 50000",
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"rsv 7 1000000",
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)
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def test_step3():
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"Step3: Test CSPF from r1 to r4 for IPv6 with various metric"
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tgen = setup_testcase("Step2: CSPF(r1, r4, IPv6)")
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compare_cspf_output(
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tgen,
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"r1",
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"cspf-ipv6-metric.txt",
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"2001:db8:1::1:1",
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"2001:db8::4",
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"metric 50",
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)
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compare_cspf_output(
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tgen,
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"r1",
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"cspf-ipv6-te-metric.txt",
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"2001:db8::1",
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"2001:db8:5::3:4",
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"te-metric 80",
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)
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compare_cspf_output(
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tgen, "r1", "cspf-ipv6-delay.txt", "2001:db8::1", "2001:db8::4", "delay 80000"
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)
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compare_cspf_output(
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tgen,
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"r1",
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"cspf-ipv6-delay.txt",
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"2001:db8::1",
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"2001:db8::4",
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"delay 80000",
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"rsv 7 1000000",
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)
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def test_step4():
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"Step4: Test CSPF from r1 to r4 with no possible path"
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tgen = setup_testcase("Step2: CSPF(r1, r4, failure)")
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compare_cspf_output(
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tgen, "r1", "cspf-failed.txt", "10.0.255.1", "10.0.255.4", "metric 10"
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)
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compare_cspf_output(
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tgen, "r1", "cspf-failed.txt", "2001:db8::1", "2001:db8::4", "te-metric 50"
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)
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compare_cspf_output(
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tgen, "r1", "cspf-failed.txt", "10.0.255.1", "10.0.255.4", "delay 5000"
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)
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compare_cspf_output(
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tgen,
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"r1",
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"cspf-failed.txt",
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"2001:db8::1",
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"2001:db8::4",
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"delay 80000",
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"rsv 7 10000000",
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)
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compare_cspf_output(
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tgen, "r1", "cspf-failed-src.txt", "10.0.0.3", "10.0.255.4", "metric 10"
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)
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compare_cspf_output(
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tgen, "r1", "cspf-failed-dst.txt", "10.0.0.1", "10.0.4.40", "metric 10"
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)
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compare_cspf_output(
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tgen, "r1", "cspf-failed-same.txt", "10.0.0.1", "10.0.0.1", "metric 10"
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)
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def test_memory_leak():
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"Run the memory leak test and report results."
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tgen = get_topogen()
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if not tgen.is_memleak_enabled():
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pytest.skip("Memory leak test/report is disabled")
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tgen.report_memory_leaks()
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if __name__ == "__main__":
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args = ["-s"] + sys.argv[1:]
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sys.exit(pytest.main(args))
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