tests: Check if `allow-ecmp` command works for RIPng

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>

diff --git a/tests/topotests/ripng_allow_ecmp/__init__.py b/tests/topotests/ripng_allow_ecmp/__init__.py
new file mode 100644 (file)
index 0000000..e69de29

diff --git a/tests/topotests/ripng_allow_ecmp/r1/frr.conf b/tests/topotests/ripng_allow_ecmp/r1/frr.conf
new file mode 100644 (file)
index 0000000..effb5df
--- /dev/null
+++ b/tests/topotests/ripng_allow_ecmp/r1/frr.conf
@@ -0,0 +1,9 @@
+!
+int r1-eth0
+ ipv6 address 2001:db8:1::1/64
+!
+router ripng
+ allow-ecmp
+ network 2001:db8:1::/64
+ timers basic 5 15 10
+exit

diff --git a/tests/topotests/ripng_allow_ecmp/r2/frr.conf b/tests/topotests/ripng_allow_ecmp/r2/frr.conf
new file mode 100644 (file)
index 0000000..71da101
--- /dev/null
+++ b/tests/topotests/ripng_allow_ecmp/r2/frr.conf
@@ -0,0 +1,13 @@
+!
+int lo
+ ipv6 address 2001:db8:2::1/64
+!
+int r2-eth0
+ ipv6 address 2001:db8:1::2/64
+!
+router ripng
+ redistribute connected
+ network 2001:db8:1::/64
+ network 2001:db8:2::/64
+ timers basic 5 15 10
+exit

diff --git a/tests/topotests/ripng_allow_ecmp/r3/frr.conf b/tests/topotests/ripng_allow_ecmp/r3/frr.conf
new file mode 100644 (file)
index 0000000..fe9594d
--- /dev/null
+++ b/tests/topotests/ripng_allow_ecmp/r3/frr.conf
@@ -0,0 +1,14 @@
+!
+int lo
+ ipv6 address 2001:db8:2::1/64
+!
+int r3-eth0
+ ipv6 address 2001:db8:1::3/64
+!
+router ripng
+ redistribute connected
+ network 2001:db8:1::/64
+ network 2001:db8:2::/64
+ timers basic 5 15 10
+exit
+

diff --git a/tests/topotests/ripng_allow_ecmp/r4/frr.conf b/tests/topotests/ripng_allow_ecmp/r4/frr.conf
new file mode 100644 (file)
index 0000000..0d3ea0b
--- /dev/null
+++ b/tests/topotests/ripng_allow_ecmp/r4/frr.conf
@@ -0,0 +1,14 @@
+!
+int lo
+ ipv6 address 2001:db8:2::1/64
+!
+int r4-eth0
+ ipv6 address 2001:db8:1::4/64
+!
+router ripng
+ redistribute connected
+ network 2001:db8:1::/64
+ network 2001:db8:2::/64
+ timers basic 5 15 10
+exit
+

diff --git a/tests/topotests/ripng_allow_ecmp/r5/frr.conf b/tests/topotests/ripng_allow_ecmp/r5/frr.conf
new file mode 100644 (file)
index 0000000..6d6ca56
--- /dev/null
+++ b/tests/topotests/ripng_allow_ecmp/r5/frr.conf
@@ -0,0 +1,14 @@
+!
+int lo
+ ipv6 address 2001:db8:2::1/64
+!
+int r5-eth0
+ ipv6 address 2001:db8:1::5/64
+!
+router ripng
+ redistribute connected
+ network 2001:db8:1::/64
+ network 2001:db8:2::/64
+ timers basic 5 15 10
+exit
+

diff --git a/tests/topotests/ripng_allow_ecmp/test_ripng_allow_ecmp.py b/tests/topotests/ripng_allow_ecmp/test_ripng_allow_ecmp.py
new file mode 100644 (file)
index 0000000..08bb999
--- /dev/null
+++ b/tests/topotests/ripng_allow_ecmp/test_ripng_allow_ecmp.py
@@ -0,0 +1,93 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: ISC
+
+# Copyright (c) 2023 by
+# Donatas Abraitis <donatas@opensourcerouting.org>
+#
+
+"""
+Test if RIPng `allow-ecmp` command works correctly.
+"""
+
+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
+from lib.common_config import step
+
+pytestmark = [pytest.mark.ripngd]
+
+
+def setup_module(mod):
+    topodef = {"s1": ("r1", "r2", "r3", "r4", "r5")}
+    tgen = Topogen(topodef, mod.__name__)
+    tgen.start_topology()
+
+    router_list = tgen.routers()
+
+    for _, (rname, router) in enumerate(router_list.items(), 1):
+        router.load_frr_config(os.path.join(CWD, "{}/frr.conf".format(rname)))
+
+    tgen.start_router()
+
+
+def teardown_module(mod):
+    tgen = get_topogen()
+    tgen.stop_topology()
+
+
+def test_ripng_allow_ecmp():
+    tgen = get_topogen()
+
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    r1 = tgen.gears["r1"]
+
+    def _show_routes(nh_num):
+        output = json.loads(r1.vtysh_cmd("show ipv6 route json"))
+        expected = {
+            "2001:db8:2::/64": [
+                {
+                    "internalNextHopNum": nh_num,
+                    "internalNextHopActiveNum": nh_num,
+                }
+            ]
+        }
+        return topotest.json_cmp(output, expected)
+
+    test_func = functools.partial(_show_routes, 4)
+    _, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
+    assert (
+        result is None
+    ), "Can't see 2001:db8:2::/64 as multipath (4) in `show ipv6 route`"
+
+    step(
+        "Configure allow-ecmp 2, ECMP group routes SHOULD have next-hops with the lowest IPs"
+    )
+    r1.vtysh_cmd(
+        """
+    configure terminal
+        router ripng
+            allow-ecmp 2
+    """
+    )
+
+    test_func = functools.partial(_show_routes, 2)
+    _, result = topotest.run_and_expect(test_func, None, count=60, wait=1)
+    assert (
+        result is None
+    ), "Can't see 2001:db8:2::/64 as multipath (2) in `show ipv6 route`"
+
+
+if __name__ == "__main__":
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))