tests/topotests/bgp_extended_optional_parameters_length/test_bgp_extended_optional_parameters_length.py

   1 #!/usr/bin/env python
   2
   3 # Copyright (c) 2021 by
   4 # Donatas Abraitis <donatas.abraitis@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 Extended Optional Parameters Length encoding format works
  23 if forced with a knob.
  24 https://datatracker.ietf.org/doc/html/rfc9072
  25 """
  26
  27 import os
  28 import sys
  29 import json
  30 import pytest
  31 import functools
  32
  33 pytestmark = pytest.mark.bgpd
  34
  35 CWD = os.path.dirname(os.path.realpath(__file__))
  36 sys.path.append(os.path.join(CWD, "../"))
  37
  38 # pylint: disable=C0413
  39 from lib import topotest
  40 from lib.topogen import Topogen, TopoRouter, get_topogen
  41
  42 pytestmark = [pytest.mark.bgpd]
  43
  44
  45 def setup_module(mod):
  46     topodef = {"s1": ("r1", "r2")}
  47     tgen = Topogen(topodef, mod.__name__)
  48     tgen.start_topology()
  49
  50     router_list = tgen.routers()
  51
  52     for i, (rname, router) in enumerate(router_list.items(), 1):
  53         router.load_config(
  54             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
  55         )
  56         router.load_config(
  57             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
  58         )
  59
  60     tgen.start_router()
  61
  62
  63 def teardown_module(mod):
  64     tgen = get_topogen()
  65     tgen.stop_topology()
  66
  67
  68 def test_bgp_extended_optional_parameters_length():
  69     tgen = get_topogen()
  70
  71     if tgen.routers_have_failure():
  72         pytest.skip(tgen.errors)
  73
  74     router = tgen.gears["r1"]
  75
  76     def _bgp_converge(router):
  77         output = json.loads(router.vtysh_cmd("show bgp ipv4 unicast summary json"))
  78         expected = {
  79             "peers": {
  80                 "192.168.1.2": {
  81                     "pfxRcd": 2,
  82                     "pfxSnt": 2,
  83                     "state": "Established",
  84                     "peerState": "OK",
  85                 }
  86             }
  87         }
  88         return topotest.json_cmp(output, expected)
  89
  90     test_func = functools.partial(_bgp_converge, router)
  91     _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
  92     assert result is None, "Can't converge with extended-optional-parameters"
  93
  94     def _bgp_extended_optional_parameters_length(router):
  95         output = json.loads(router.vtysh_cmd("show bgp neighbor 192.168.1.2 json"))
  96         expected = {"192.168.1.2": {"extendedOptionalParametersLength": True}}
  97         return topotest.json_cmp(output, expected)
  98
  99     test_func = functools.partial(_bgp_extended_optional_parameters_length, router)
 100     _, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
 101     assert result is None, "Can't see Extended Optional Parameters Length to be used"
 102
 103
 104 if __name__ == "__main__":
 105     args = ["-s"] + sys.argv[1:]
 106     sys.exit(pytest.main(args))