adds test

Author: WolfgangFahl

tests/test_persistent_log.py

@@ -0,0 +1,64 @@
+'''
+Created on 2024-10-04
+
+@author: wf
+'''
+from ngwidgets.basetest import Basetest
+from lodstorage.persistent_log import Log
+
+class TestPersistentLog(Basetest):
+    """
+    test the persistent log handling
+    """
+
+    def setUp(self, debug=True, profile=True):
+        Basetest.setUp(self, debug=debug, profile=profile)
+        self.log = Log()
+        if debug:
+            self.log.do_log=False
+            self.log.do_print=True
+
+    def test_positive_logging(self):
+        """Test normal logging and level summary."""
+        self.log.log("❌", "system", "An error occurred.")
+        self.log.log("⚠️", "validation", "A warning message.")
+        self.log.log("✅", "process", "Process completed successfully.")
+
+        # Verify entries
+        self.assertEqual(len(self.log.entries), 3)
+        self.assertEqual(self.log.entries[0].msg, "❌:An error occurred.")
+        self.assertEqual(self.log.entries[1].msg, "⚠️:A warning message.")
+        self.assertEqual(self.log.entries[2].msg, "✅:Process completed successfully.")
+
+        # Verify level counts
+        count, summary = self.log.get_level_summary("error")
+        self.assertEqual(count, 1)
+        self.assertIn("system", summary)
+
+        count, summary = self.log.get_level_summary("warn")
+        self.assertEqual(count, 1)
+        self.assertIn("validation", summary)
+
+        count, summary = self.log.get_level_summary("info")
+        self.assertEqual(count, 1)
+        self.assertIn("process", summary)
+
+        yaml_file="/tmp/persistent_log_test.yaml"
+        self.log.save_to_yaml_file(yaml_file)
+        # Later or in another session
+        loaded_log = Log.load_from_yaml_file(yaml_file)
+        self.assertEqual(self.log,loaded_log)
+
+    def test_robustness(self):
+        """Test clearing logs and handling unsupported icons."""
+        self.log.log("❌", "system", "First error.")
+        self.log.log("⭐", "unknown", "Unknown log level.")  # Unsupported icon
+        self.log.clear()
+
+        # Verify entries are cleared
+        self.assertEqual(len(self.log.entries), 0)
+
+        # Verify level counts are reset
+        count, summary = self.log.get_level_summary("error")
+        self.assertEqual(count, 0)
+        self.assertIn("No entries found", summary)