--- /dev/null
+#!/usr/bin/env python
+# SPDX-License-Identifier: ISC
+# -*- coding: utf-8 eval: (blacken-mode 1) -*-
+#
+# September 17 2024, Christian Hopps <chopps@labn.net>
+#
+# Copyright (c) 2024, LabN Consulting, L.L.C.
+#
+
+import json
+import pytest
+from lib.topogen import Topogen
+
+pytestmark = [pytest.mark.staticd, pytest.mark.mgmtd]
+
+
+@pytest.fixture(scope="module")
+def tgen(request):
+ "Setup/Teardown the environment and provide tgen argument to tests"
+
+ topodef = {"s1": ("r1",)}
+
+ tgen = Topogen(topodef, request.module.__name__)
+ tgen.start_topology()
+
+ router_list = tgen.routers()
+ for rname, router in router_list.items():
+ router.load_frr_config("frr-yanglib.conf")
+
+ tgen.start_router()
+ yield tgen
+ tgen.stop_topology()
+
+
+def test_yang_lib(tgen):
+ if tgen.routers_have_failure():
+ pytest.skip(tgen.errors)
+
+ r1 = tgen.gears["r1"].net
+ output = r1.cmd_nostatus(
+ "vtysh -c 'show mgmt get-data /ietf-yang-library:yang-library'"
+ )
+ ret = json.loads(output)
+ loaded_modules = ret['ietf-yang-library:yang-library']['module-set'][0]['module']
+ assert len(loaded_modules) > 10, "Modules missing from yang-library"