tests: add CLI command send log topotest

Signed-off-by: Christian Hopps <chopps@labn.net>

Author: choppsv1

tests/topotests/send_log/r1/frr.conf

@@ -0,0 +1,5 @@
+log timestamp precision 6
+log record-priority
+log file frr.log
+
+ip route 11.11.11.11/32 lo

tests/topotests/send_log/test_send_log.py

@@ -0,0 +1,54 @@
+# -*- coding: utf-8 eval: (blacken-mode 1) -*-
+# SPDX-License-Identifier: ISC
+#
+# June 14 2025, Christian Hopps <chopps@labn.net>
+#
+# Copyright (c) 2025, LabN Consulting, L.L.C.
+#
+"""
+Test Logging Config
+"""
+import re
+
+import pytest
+from lib.topogen import Topogen
+from munet.testing.util import retry
+from munet.watchlog import WatchLog
+
+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()
+    tgen.routers()["r1"].load_frr_config("frr.conf")
+
+    tgen.start_router()
+    yield tgen
+    tgen.stop_topology()
+
+
+@retry(retry_timeout=10)
+def scan_log(log, regex):
+    log.update_content()
+    assert re.search(regex, log.from_mark(log.last_snap_mark))
+
+
+def test_log(tgen):
+    r1 = tgen.net.hosts["r1"]
+    log = WatchLog(r1.rundir / "staticd.log")
+
+    s = "Foo  Bar  Baz"
+    assert s not in log.snapshot()
+    r1.cmd_raises(f"vtysh -c 'send log {s}'")
+    scan_log(log, re.escape(s))
+
+    s = "Notice Me!"
+    assert s not in log.snapshot()
+    r1.cmd_raises(f"vtysh -c 'send log severity warning {s}'")
+    scan_log(log, f"warnings:.*{re.escape(s)}")