226 lines
6.9 KiB
Python
226 lines
6.9 KiB
Python
#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# test_ospf_tilfa_topo1.py
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# Part of NetDEF Topology Tests
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#
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# Copyright (c) 2020 by
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# Network Device Education Foundation, Inc. ("NetDEF")
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#
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"""
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test_ospf_tilfa_topo1.py:
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This topology is intentionally kept simple, its main purpose is to verify that
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generated backup label stacks are inserted correctly into the RIB. For fancy
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topologies please use the unit test framework provided in `/tests/ospfd`.
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+---------+ +---------+
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| | | |
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10.0.1.0/24 eth+rt1| RT2 |eth+rt4 eth+rt2| RT2 |
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+---------------------+ 2.2.2.2 +---------------------+ 4.4.4.4 |
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| | | 10.0.3.0/24 | |
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|eth+rt2 +---------+ +---------+
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+---------+ eth+rt5|
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| | |
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| RT1 | 10.0.5.0/24|
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| 1.1.1.1 | |
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+---------+ eth+rt4|
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|eth+rt3 +---------+ +---------+
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| | | 10.0.4.0/24 | |
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+---------------------+ RT3 +---------------------+ RT5 |
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10.0.2.0/24 eth+rt1| 3.3.3.3 |eth+rt5 eth-rt3| 5.5.5.5 |
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| | | |
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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 pytest
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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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# Required to instantiate the topology builder class.
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pytestmark = [pytest.mark.ospfd]
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def build_topo(tgen):
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"Build function"
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#
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# Define FRR Routers
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#
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for router in ["rt1", "rt2", "rt3", "rt4", "rt5"]:
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tgen.add_router(router)
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#
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# Define connections
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#
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switch = tgen.add_switch("s1")
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switch.add_link(tgen.gears["rt1"], nodeif="eth-rt2")
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switch.add_link(tgen.gears["rt2"], nodeif="eth-rt1")
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switch = tgen.add_switch("s2")
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switch.add_link(tgen.gears["rt1"], nodeif="eth-rt3")
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switch.add_link(tgen.gears["rt3"], nodeif="eth-rt1")
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switch = tgen.add_switch("s3")
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switch.add_link(tgen.gears["rt2"], nodeif="eth-rt4")
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switch.add_link(tgen.gears["rt4"], nodeif="eth-rt2")
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switch = tgen.add_switch("s4")
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switch.add_link(tgen.gears["rt3"], nodeif="eth-rt5")
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switch.add_link(tgen.gears["rt5"], nodeif="eth-rt3")
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switch = tgen.add_switch("s5")
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switch.add_link(tgen.gears["rt4"], nodeif="eth-rt5")
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switch.add_link(tgen.gears["rt5"], nodeif="eth-rt4")
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def setup_module(mod):
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"Sets up the pytest environment"
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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 all registered routers, load the zebra configuration file
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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_OSPF, os.path.join(CWD, "{}/ospfd.conf".format(rname))
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)
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tgen.start_router()
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def teardown_module(mod):
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"Teardown the pytest environment"
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tgen = get_topogen()
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# This function tears down the whole topology.
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tgen.stop_topology()
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def router_compare_json_output(rname, command, reference):
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"Compare router JSON output"
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logger.info('Comparing router "%s" "%s" output', rname, command)
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tgen = get_topogen()
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filename = "{}/{}/{}".format(CWD, rname, reference)
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expected = json.loads(open(filename).read())
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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=120, wait=0.5)
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assertmsg = '"{}" JSON output mismatches the expected result'.format(rname)
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assert diff is None, assertmsg
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def test_ospf_initial_convergence_step1():
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logger.info("Test (step 1): check initial convergence")
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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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router_compare_json_output(
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"rt1",
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"show ip route json",
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"step1/show_ip_route_initial.ref",
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)
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def test_ospf_link_protection_step2():
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logger.info("Test (step 2): check OSPF link protection")
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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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# enable TI-LFA link protection on all interfaces
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tgen.net["rt1"].cmd('vtysh -c "conf t" -c "router ospf" -c "fast-reroute ti-lfa"')
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router_compare_json_output(
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"rt1",
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"show ip route json",
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"step2/show_ip_route_link_protection.ref",
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)
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# disable TI-LFA link protection on all interfaces
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tgen.net["rt1"].cmd(
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'vtysh -c "conf t" -c "router ospf" -c "no fast-reroute ti-lfa"'
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)
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# check if we got back to the initial route table
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router_compare_json_output(
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"rt1",
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"show ip route json",
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"step2/show_ip_route_initial.ref",
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)
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def test_ospf_node_protection_step3():
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logger.info("Test (step 3): check OSPF node protection")
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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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# enable TI-LFA node protection on all interfaces
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tgen.net["rt1"].cmd(
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'vtysh -c "conf t" -c "router ospf" -c "fast-reroute ti-lfa node-protection"'
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)
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router_compare_json_output(
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"rt1",
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"show ip route json",
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"step3/show_ip_route_node_protection.ref",
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)
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# disable TI-LFA node protection on all interfaces
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tgen.net["rt1"].cmd(
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'vtysh -c "conf t" -c "router ospf" -c "no fast-reroute ti-lfa node-protection"'
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)
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# check if we got back to the initial route table
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router_compare_json_output(
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"rt1",
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"show ip route json",
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"step3/show_ip_route_initial.ref",
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)
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# Memory leak test template
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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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