Fix #5: [ BOUNTY] [Python] Fix false pass rate in log parser test suite

tests/test_log_aggregator.py

@@ -0,0 +1,46 @@
+# Fix for Issue #5: [ BOUNTY] [Python] Fix false pass rate in log parser test suite
+
+# tests/test_log_aggregator.py
+import unittest
+from tools.log_aggregator import LogAggregator
+import os
+
+class TestLogAggregator(unittest.TestCase):
+    def setUp(self):
+        self.log_file = 'tests/fixtures/sample.log'
+        self.log_aggregator = LogAggregator(self.log_file)
+
+    def test_parse_log(self):
+        logs = self.log_aggregator.parse_log()
+        self.assertEqual(len(logs), 10)  # assuming 10 logs in the sample file
+
+    def test_log_fields(self):
+        logs = self.log_aggregator.parse_log()
+        for log in logs:
+            self.assertIn('timestamp', log)
+            self.assertIn('level', log)
+            self.assertIn('pid', log)
+            self.assertIn('module', log)
+            self.assertIn('message', log)
+
+    def test_edge_cases(self):
+        # test malformed line
+        with open(self.log_file, 'a') as f:
+            f.write('malformed line\n')
+        logs = self.log_aggregator.parse_log()
+        self.assertEqual(len(logs), 10)  # the malformed line should be ignored
+
+        # test empty file
+        with open(self.log_file, 'w') as f:
+            f.write('')
+        logs = self.log_aggregator.parse_log()
+        self.assertEqual(len(logs), 0)
+
+        # test non-existent file
+        non_existent_file = 'tests/fixtures/non_existent.log'
+        log_aggregator = LogAggregator(non_existent_file)
+        with self.assertRaises(FileNotFoundError):
+            log_aggregator.parse_log()
+
+if __name__ == '__main__':
+    unittest.main()