Cleaning

.gitignore

@@ -1,3 +1,6 @@
 
 wheelhouse*/
 .vscode/
+
+
+__pycache__/

tests/test_stubs.py

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+"""
+Test suite for RDKit Python stub files (.pyi).
+"""
+
+from pathlib import Path
+import pytest
+
+
+class TestRDKitStubs:
+    """Test RDKit Python stub files and type hints."""
+
+    def test_stub_files_exist(self):
+        """Test that key .pyi stub files exist in the installation."""
+        # Try to find stub files in the installed package
+        try:
+            import rdkit
+            rdkit_path = Path(rdkit.__file__).parent.parent
+            stubs_path = rdkit_path / "rdkit-stubs"
+
+            if not stubs_path.exists():
+                pytest.fail("rdkit-stubs directory not found in installation")
+
+            # Check for key stub files
+            expected_stubs = [
+                "Chem/__init__.pyi",
+                "Chem/Descriptors.pyi", 
+                "Chem/rdMolDescriptors.pyi",
+                "Chem/AllChem.pyi",
+            ]
+
+            missing_stubs = []
+            for stub_file in expected_stubs:
+                stub_path = stubs_path / stub_file
+                if not stub_path.exists():
+                    missing_stubs.append(stub_file)
+
+            if missing_stubs:
+                pytest.fail(f"Missing stub files: {missing_stubs}")
+
+        except ImportError:
+            pytest.fail("rdkit package not available for stub testing")
+
+
+
+
+
+