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#!/usr/bin/env python
# SPDX-License-Identifier: ISC
#
# Copyright (c) 2021 by
# Donatas Abraitis <donatas.abraitis@gmail.com>
#
"""
Test if BGP UPDATE with AS-PATH attribute with value zero (0)
is threated as withdrawal.
"""
import os
import sys
import json
import pytest
import functools
CWD = os.path.dirname(os.path.realpath(__file__))
sys.path.append(os.path.join(CWD, "../"))
# pylint: disable=C0413
from lib import topotest
from lib.topogen import Topogen, TopoRouter, get_topogen
pytestmark = [pytest.mark.bgpd]
def build_topo(tgen):
r1 = tgen.add_router("r1")
peer1 = tgen.add_exabgp_peer("peer1", ip="10.0.0.2", defaultRoute="via 10.0.0.1")
switch = tgen.add_switch("s1")
switch.add_link(r1)
switch.add_link(peer1)
def setup_module(mod):
tgen = Topogen(build_topo, mod.__name__)
tgen.start_topology()
router = tgen.gears["r1"]
router.load_config(TopoRouter.RD_ZEBRA, os.path.join(CWD, "r1/zebra.conf"))
router.load_config(TopoRouter.RD_BGP, os.path.join(CWD, "r1/bgpd.conf"))
router.start()
peer = tgen.gears["peer1"]
peer.start(os.path.join(CWD, "peer1"), os.path.join(CWD, "exabgp.env"))
def teardown_module(mod):
tgen = get_topogen()
tgen.stop_topology()
def test_bgp_aggregator_zero():
tgen = get_topogen()
if tgen.routers_have_failure():
pytest.skip(tgen.errors)
def _bgp_converge():
output = json.loads(
tgen.gears["r1"].vtysh_cmd("show ip bgp neighbor 10.0.0.2 json")
)
expected = {
"10.0.0.2": {
"bgpState": "Established",
"addressFamilyInfo": {"ipv4Unicast": {"acceptedPrefixCounter": 1}},
}
}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_converge)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "More than one prefix seen at r1, SHOULD be only one."
def _bgp_has_correct_routes_without_asn_0():
output = json.loads(tgen.gears["r1"].vtysh_cmd("show ip bgp json"))
expected = {"routes": {"192.168.100.101/32": [{"valid": True}]}}
return topotest.json_cmp(output, expected)
test_func = functools.partial(_bgp_has_correct_routes_without_asn_0)
_, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
assert result is None, "Failed listing 192.168.100.101/32, SHOULD be accepted."
def test_memory_leak():
"Run the memory leak test and report results."
tgen = get_topogen()
if not tgen.is_memleak_enabled():
pytest.skip("Memory leak test/report is disabled")
tgen.report_memory_leaks()
if __name__ == "__main__":
args = ["-s"] + sys.argv[1:]
sys.exit(pytest.main(args))
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