tests/topotests/bgp_minimum_holdtime/test_bgp_minimum_holdtime.py

   1 #!/usr/bin/env python
   2
   3 # Copyright (c) 2021 by
   4 # Takemasa Imada <takemasa.imada@gmail.com>
   5 #
   6 # Permission to use, copy, modify, and/or distribute this software
   7 # for any purpose with or without fee is hereby granted, provided
   8 # that the above copyright notice and this permission notice appear
   9 # in all copies.
  10 #
  11 # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
  12 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  13 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
  14 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  15 # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  16 # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  17 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  18 # OF THIS SOFTWARE.
  19 #
  20
  21 """
  22 Test if minimum-holdtime works.
  23 """
  24
  25 import os
  26 import sys
  27 import json
  28 import pytest
  29 import functools
  30
  31 CWD = os.path.dirname(os.path.realpath(__file__))
  32 sys.path.append(os.path.join(CWD, "../"))
  33
  34 # pylint: disable=C0413
  35 from lib import topotest
  36 from lib.topogen import Topogen, TopoRouter, get_topogen
  37
  38 pytestmark = [pytest.mark.bgpd]
  39
  40
  41 def build_topo(tgen):
  42     for routern in range(1, 3):
  43         tgen.add_router("r{}".format(routern))
  44
  45     switch = tgen.add_switch("s1")
  46     switch.add_link(tgen.gears["r1"])
  47     switch.add_link(tgen.gears["r2"])
  48
  49
  50 def setup_module(mod):
  51     tgen = Topogen(build_topo, mod.__name__)
  52     tgen.start_topology()
  53
  54     router_list = tgen.routers()
  55
  56     for i, (rname, router) in enumerate(router_list.items(), 1):
  57         router.load_config(
  58             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
  59         )
  60         router.load_config(
  61             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
  62         )
  63
  64     tgen.start_router()
  65
  66
  67 def teardown_module(mod):
  68     tgen = get_topogen()
  69     tgen.stop_topology()
  70
  71
  72 def test_bgp_minimum_holdtime():
  73     tgen = get_topogen()
  74
  75     if tgen.routers_have_failure():
  76         pytest.skip(tgen.errors)
  77
  78     def _bgp_neighbor_check_if_notification_sent():
  79         output = json.loads(
  80             tgen.gears["r1"].vtysh_cmd("show ip bgp neighbor 192.168.255.2 json")
  81         )
  82         expected = {
  83             "192.168.255.2": {
  84                 "connectionsEstablished": 0,
  85                 "lastNotificationReason": "OPEN Message Error/Unacceptable Hold Time",
  86                 "lastResetDueTo": "BGP Notification send",
  87             }
  88         }
  89         return topotest.json_cmp(output, expected)
  90
  91     test_func = functools.partial(_bgp_neighbor_check_if_notification_sent)
  92     success, result = topotest.run_and_expect(test_func, None, count=40, wait=0.5)
  93     assert result is None, "Failed to send notification message\n"
  94
  95
  96 if __name__ == "__main__":
  97     args = ["-s"] + sys.argv[1:]
  98     sys.exit(pytest.main(args))