tests

tests/__init__.py

@@ -0,0 +1 @@
+"""Test package for the codeeditor application.""" 

tests/test_main.py

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+#!/usr/bin/env python
+# -*- coding: utf-8 -*-
+
+"""Tests for the main module."""
+
+import unittest
+from unittest.mock import patch
+import sys
+import io
+
+from src import main
+
+
+class TestMain(unittest.TestCase):
+    """Test cases for the main module."""
+
+    @patch('sys.stdout', new_callable=io.StringIO)
+    def test_main_function(self, mock_stdout):
+        """Test the main function."""
+        main.main()
+        output = mock_stdout.getvalue()
+        self.assertIn("Starting codeeditor application", output)
+        self.assertIn("Application finished", output)
+
+
+if __name__ == "__main__":
+    unittest.main()