tests: add a logging test for new temp_log_options API

Add a new log unit test. Add a test for the newly exposed
temp_log_options() function as well as the already implemented
configure_logging() function.

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

Author: choppsv1

tests/test_log.py

@@ -0,0 +1,58 @@
+# -*- coding: utf-8 eval: (blacken-mode 1) -*-
+# SPDX-License-Identifier: MIT
+#
+# July 7 2025, Christian Hopps <chopps@labn.net>
+#
+# Copyright (c) 2025, LabN Consulting, L.L.C.
+#
+import logging
+import os
+import sys
+import unittest
+
+from libyang import Context, LibyangError, configure_logging, temp_log_options
+
+
+YANG_DIR = os.path.join(os.path.dirname(__file__), "yang")
+
+
+class LogTest(unittest.TestCase):
+    def setUp(self):
+        self.ctx = Context(YANG_DIR)
+        configure_logging(False, logging.INFO)
+
+    def tearDown(self):
+        if self.ctx is not None:
+            self.ctx.destroy()
+        self.ctx = None
+
+    def _cause_log(self):
+        try:
+            assert self.ctx is not None
+            _ = self.ctx.parse_data_mem("bad", fmt="xml")
+        except LibyangError:
+            pass
+
+    def test_configure_logging(self):
+        """Test configure_logging API."""
+        with self.assertNoLogs("libyang", level="ERROR"):
+            self._cause_log()
+
+        configure_logging(True, logging.INFO)
+        with self.assertLogs("libyang", level="ERROR"):
+            self._cause_log()
+
+    @unittest.skipIf(sys.version_info < (3, 10), "assertNoLogs python3.10 or higher")
+    def test_with_temp_log(self):
+        """Test configure_logging API."""
+        configure_logging(True, logging.INFO)
+
+        with self.assertLogs("libyang", level="ERROR"):
+            self._cause_log()
+
+        with self.assertNoLogs("libyang", level="ERROR"):
+            with temp_log_options(0):
+                self._cause_log()
+
+        with self.assertLogs("libyang", level="ERROR"):
+            self._cause_log()