Create test for main.py execution

Author: Kiguli

tests/test_main.py

@@ -0,0 +1,13 @@
+import subprocess
+import sys
+import os
+
+def test_main_runs():
+    """Check that main.py runs without errors."""
+    result = subprocess.run(
+        [sys.executable, os.path.join(os.path.dirname(__file__), "..", "main.py")],
+        capture_output=True,
+        text=True
+    )
+    # Assert that the script exits successfully
+    assert result.returncode == 0, f"main.py failed with error:\n{result.stderr}"