topotests: for zapi's seg6 route configuration (step3)

This commit checks seg6 route configuration via ZAPI is
working fine.

Signed-off-by: Hiroki Shirokura <slank.dev@gmail.com>

tests/topotests/zebra_seg6_route/r1/routes.json

@@ -0,0 +1,25 @@
+[
+  {
+    "in": {
+      "dest": "1::1",
+      "nh": "2001::1",
+      "sid": "a::"
+    },
+    "out":[{
+        "prefix":"1::1/128",
+        "protocol":"sharp",
+        "selected":true,
+        "destSelected":true,
+        "distance":150,
+        "metric":0,
+        "installed":true,
+        "table":254,
+        "nexthops":[{
+            "flags":3,
+            "fib":true,
+            "active":true,
+            "seg6": { "segs": "a::" }
+        }]
+    }]
+  }
+]

tests/topotests/zebra_seg6_route/r1/setup.sh

@@ -0,0 +1,5 @@
+ip link add vrf10 type vrf table 10
+ip link set vrf10 up
+ip link add dum0 type dummy
+ip link set dum0 up
+sysctl -w net.ipv6.conf.dum0.disable_ipv6=0

tests/topotests/zebra_seg6_route/r1/zebra.conf

@@ -0,0 +1,13 @@
+log file zebra.log
+!
+log stdout notifications
+log monitor notifications
+log commands
+!
+debug zebra packet
+debug zebra dplane
+debug zebra kernel msgdump
+!
+interface dum0
+ ipv6 address 2001::1/64
+!

tests/topotests/zebra_seg6_route/test_zebra_seg6_route.py

@@ -0,0 +1,109 @@
+#!/usr/bin/env python
+
+#
+# test_zebra_seg6_route.py
+#
+# Copyright (c) 2020 by
+# LINE Corporation, Hiroki Shirokura <slank.dev@gmail.com>
+#
+# Permission to use, copy, modify, and/or distribute this software
+# for any purpose with or without fee is hereby granted, provided
+# that the above copyright notice and this permission notice appear
+# in all copies.
+#
+# THE SOFTWARE IS PROVIDED "AS IS" AND NETDEF DISCLAIMS ALL WARRANTIES
+# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL NETDEF BE LIABLE FOR
+# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY
+# DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
+# WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS
+# ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
+# OF THIS SOFTWARE.
+#
+
+"""
+test_zebra_seg6_route.py: Test seg6 route addition with zapi.
+"""
+
+import os
+import re
+import sys
+import pytest
+import json
+import platform
+from functools import partial
+
+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
+from lib.topolog import logger
+from lib.common_config import shutdown_bringup_interface
+from mininet.topo import Topo
+
+
+def open_json_file(filename):
+    try:
+        with open(filename, "r") as f:
+            return json.load(f)
+    except IOError:
+        assert False, "Could not read file {}".format(filename)
+
+
+class TemplateTopo(Topo):
+    def build(self, **_opts):
+        tgen = get_topogen(self)
+        tgen.add_router("r1")
+
+
+def setup_module(mod):
+    tgen = Topogen(TemplateTopo, mod.__name__)
+    tgen.start_topology()
+    router_list = tgen.routers()
+    for rname, router in tgen.routers().items():
+        router.run("/bin/bash {}".format(os.path.join(CWD, "{}/setup.sh".format(rname))))
+        router.load_config(TopoRouter.RD_ZEBRA, os.path.join(CWD, '{}/zebra.conf'.format(rname)))
+        router.load_config(TopoRouter.RD_SHARP, os.path.join(CWD, "{}/sharpd.conf".format(rname)))
+    tgen.start_router()
+
+
+def teardown_module(_mod):
+    tgen = get_topogen()
+    tgen.stop_topology()
+
+
+def test_zebra_seg6local_routes():
+    tgen = get_topogen()
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+    logger.info("Test for seg6local route install via ZAPI was start.")
+    r1 = tgen.gears["r1"]
+
+    def check(router, dest, nh, sid, expected):
+        router.vtysh_cmd("sharp install routes {} "\
+                         "nexthop-seg6 {} encap {} 1".format(dest, nh, sid))
+        output = json.loads(router.vtysh_cmd("show ipv6 route {} json".format(dest)))
+        output = output.get('{}/128'.format(dest))
+        if output is None:
+            return False
+        return topotest.json_cmp(output, expected)
+
+    manifests = open_json_file(os.path.join(CWD, "{}/routes.json".format("r1")))
+    for manifest in manifests:
+        logger.info("CHECK {} {} {}".format(manifest['in']['dest'],
+                                            manifest['in']['nh'],
+                                            manifest['in']['sid']))
+        test_func = partial(check, r1,
+                            manifest['in']['dest'],
+                            manifest['in']['nh'],
+                            manifest['in']['sid'],
+                            manifest['out'])
+        success, result = topotest.run_and_expect(test_func, None, count=5, wait=1)
+        assert result is None, 'Failed'
+
+
+if __name__ == "__main__":
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))