tests/topotests/bgp_peer_group/test_bgp_peer-group.py

   1 #!/usr/bin/env python
   2
   3 #
   4 # Copyright (c) 2021 by
   5 # Donatas Abraitis <donatas.abraitis@gmail.com>
   6 #
   7 # Permission to use, copy, modify, and/or distribute this software
   8 # for any purpose with or without fee is hereby granted, provided
   9 # that the above copyright notice and this permission notice appear
  10 # in all copies.
  11 #
  12 # THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
  13 # WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
  14 # MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
  15 # ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
  16 # DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  17 # WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
  18 # ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  19 # OF THIS SOFTWARE.
  20 #
  21
  22 """
  23 Test if peer-group works for numbered and unnumbered configurations.
  24 """
  25
  26 import os
  27 import sys
  28 import json
  29 import pytest
  30 import functools
  31
  32 CWD = os.path.dirname(os.path.realpath(__file__))
  33 sys.path.append(os.path.join(CWD, "../"))
  34
  35 # pylint: disable=C0413
  36 from lib import topotest
  37 from lib.topogen import Topogen, TopoRouter, get_topogen
  38 from lib.topolog import logger
  39 from mininet.topo import Topo
  40
  41
  42 pytestmark = [pytest.mark.bgpd]
  43
  44
  45 class TemplateTopo(Topo):
  46     def build(self, *_args, **_opts):
  47         tgen = get_topogen(self)
  48
  49         for routern in range(1, 4):
  50             tgen.add_router("r{}".format(routern))
  51
  52         switch = tgen.add_switch("s1")
  53         switch.add_link(tgen.gears["r1"])
  54         switch.add_link(tgen.gears["r2"])
  55         switch.add_link(tgen.gears["r3"])
  56
  57
  58 def setup_module(mod):
  59     tgen = Topogen(TemplateTopo, mod.__name__)
  60     tgen.start_topology()
  61
  62     router_list = tgen.routers()
  63
  64     for i, (rname, router) in enumerate(router_list.items(), 1):
  65         router.load_config(
  66             TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
  67         )
  68         router.load_config(
  69             TopoRouter.RD_BGP, os.path.join(CWD, "{}/bgpd.conf".format(rname))
  70         )
  71
  72     tgen.start_router()
  73
  74
  75 def teardown_module(mod):
  76     tgen = get_topogen()
  77     tgen.stop_topology()
  78
  79
  80 def test_bgp_peer_group():
  81     tgen = get_topogen()
  82
  83     if tgen.routers_have_failure():
  84         pytest.skip(tgen.errors)
  85
  86     def _bgp_peer_group_configured():
  87         output = json.loads(tgen.gears["r1"].vtysh_cmd("show ip bgp neighbor json"))
  88         expected = {
  89             "r1-eth0": {"peerGroup": "PG", "bgpState": "Established"},
  90             "192.168.255.3": {"peerGroup": "PG", "bgpState": "Established"},
  91         }
  92         return topotest.json_cmp(output, expected)
  93
  94     test_func = functools.partial(_bgp_peer_group_configured)
  95     success, result = topotest.run_and_expect(test_func, None, count=60, wait=0.5)
  96
  97     assert result is None, 'Failed bgp convergence in "{}"'.format(tgen.gears["r1"])
  98
  99
 100 if __name__ == "__main__":
 101     args = ["-s"] + sys.argv[1:]
 102     sys.exit(pytest.main(args))