Merge pull request #14176 from pguibert6WIND/mpls_yang_enable_disable

Mpls yang enable disable

1 files changed, 139 insertions, 0 deletions

diff --git a/tests/topotests/static_routing_mpls/test_static_routing_mpls.py b/tests/topotests/static_routing_mpls/test_static_routing_mpls.py
new file mode 100644
index 0000000000..c1e249cc8f
--- /dev/null
+++ b/tests/topotests/static_routing_mpls/test_static_routing_mpls.py
@@ -0,0 +1,139 @@
+#!/usr/bin/env python
+# SPDX-License-Identifier: ISC
+
+#
+# test_static_routing_mlpls.py
+# Part of NetDEF Topology Tests
+#
+# Copyright (c) 2023 by 6WIND
+#
+
+"""
+test_static_routing_mpls.py: Testing MPLS configuration with mpls interface settings
+
+"""
+
+import os
+import re
+import sys
+import pytest
+import json
+from functools import partial
+import functools
+
+# Save the Current Working Directory to find configuration files.
+CWD = os.path.dirname(os.path.realpath(__file__))
+sys.path.append(os.path.join(CWD, "../"))
+
+# pylint: disable=C0413
+# Import topogen and topotest helpers
+from lib import topotest
+from lib.topogen import Topogen, TopoRouter, get_topogen
+from lib.topolog import logger
+
+# Required to instantiate the topology builder class.
+
+#####################################################
+##
+##   Network Topology Definition
+##
+#####################################################
+
+
+def build_topo(tgen):
+    "Build function"
+
+    tgen.add_router("r1")
+    tgen.add_router("r2")
+
+    switch = tgen.add_switch("sw1")
+    switch.add_link(tgen.gears["r1"])
+
+    switch = tgen.add_switch("sw2")
+    switch.add_link(tgen.gears["r1"])
+    switch.add_link(tgen.gears["r2"])
+
+    switch = tgen.add_switch("sw3")
+    switch.add_link(tgen.gears["r2"])
+
+    switch = tgen.add_switch("sw4")
+    switch.add_link(tgen.gears["r2"])
+
+
+#####################################################
+##
+##   Tests starting
+##
+#####################################################
+def _populate_mpls_labels():
+    tgen = get_topogen()
+    cmds_list = ["echo 100000 > /proc/sys/net/mpls/platform_labels"]
+    for cmd in cmds_list:
+        for host in ("r1", "r2"):
+            logger.info("input: " + cmd)
+            output = tgen.net[host].cmd(cmd)
+            logger.info("output: " + output)
+
+
+def setup_module(module):
+    "Setup topology"
+    tgen = Topogen(build_topo, module.__name__)
+    tgen.start_topology()
+
+    _populate_mpls_labels()
+
+    # This is a sample of configuration loading.
+    router_list = tgen.routers()
+    for rname, router in router_list.items():
+        router.load_config(
+            TopoRouter.RD_ZEBRA, os.path.join(CWD, "{}/zebra.conf".format(rname))
+        )
+
+    tgen.start_router()
+
+
+def teardown_module(_mod):
+    "Teardown the pytest environment"
+    tgen = get_topogen()
+
+    # This function tears down the whole topology.
+    tgen.stop_topology()
+
+
+def _check_mpls_state_interface(router, interface, up=True):
+    output = router.vtysh_cmd("show interface {}".format(interface))
+    if up and "MPLS enabled" in output:
+        return None
+    elif not up and "MPLS enabled" not in output:
+        return None
+    return "not good"
+
+
+def _check_mpls_state(router, interface, configured=True):
+    test_func = functools.partial(
+        _check_mpls_state_interface, router, interface, up=configured
+    )
+    success, result = topotest.run_and_expect(test_func, None, count=10, wait=0.5)
+    return success
+
+
+def test_mpls_configured_on_interface():
+    "Test 'mpls' state is correctly configured on an unconfigured interfaces"
+
+    tgen = get_topogen()
+    # Don't run this test if we have any failure.
+    if tgen.routers_have_failure():
+        pytest.skip(tgen.errors)
+
+    logger.info("Checking that MPLS state is on on r2-eth1")
+    assertmsg = "r2, interface r2-eth1, mpls operational state is off, not expected"
+    assert _check_mpls_state(tgen.gears["r2"], "r2-eth1"), assertmsg
+
+    logger.info("Checking that MPLS state is off on r2-eth2")
+    assertmsg = "r2, interface r2-eth2, mpls operational state is on, not expected"
+    assert _check_mpls_state(tgen.gears["r2"], "r2-eth2", False), assertmsg
+
+
+if __name__ == "__main__":
+    args = ["-s"] + sys.argv[1:]
+    sys.exit(pytest.main(args))