110 lines
2.8 KiB
Python
110 lines
2.8 KiB
Python
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#!/usr/bin/env python
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# SPDX-License-Identifier: ISC
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#
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# Copyright (c) 2022 by
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# Donatas Abraitis <donatas@opensourcerouting.org>
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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 json
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import pytest
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import functools
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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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from lib import topotest
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from lib.topogen import Topogen, TopoRouter, get_topogen
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from lib.common_config import step
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pytestmark = [pytest.mark.bgpd]
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def build_topo(tgen):
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for routern in range(1, 7):
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tgen.add_router("r{}".format(routern))
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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["r2"])
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switch.add_link(tgen.gears["r3"])
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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["r4"])
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def setup_module(mod):
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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 i, (rname, router) in enumerate(router_list.items(), 1):
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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_BGP, os.path.join(CWD, "{}/bgpd.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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tgen = get_topogen()
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tgen.stop_topology()
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def test_bgp_as_override():
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tgen = get_topogen()
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if tgen.routers_have_failure():
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pytest.skip(tgen.errors)
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r3 = tgen.gears["r3"]
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r4 = tgen.gears["r4"]
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def _bgp_converge():
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output = json.loads(r3.vtysh_cmd("show ip bgp neighbor 192.168.2.1 json"))
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expected = {
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"192.168.2.1": {
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"bgpState": "Established",
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"addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 2}},
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}
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}
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return topotest.json_cmp(output, expected)
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def _bgp_as_override():
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output = json.loads(r4.vtysh_cmd("show bgp ipv4 unicast json"))
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expected = {
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"routes": {
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"172.16.255.1/32": [{"valid": True, "path": "65003 65002 65003"}]
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}
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}
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return topotest.json_cmp(output, expected)
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step("Initial BGP converge")
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test_func = functools.partial(_bgp_converge)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
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assert result is None, "Failed to see BGP convergence on R4"
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step("Check if BGP as-override from R3 works")
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test_func = functools.partial(_bgp_as_override)
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_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
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assert result is None, "Failed to see overriden ASN (65001) from R3"
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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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