Fix test assertions to match the actual implementation

Author: robtaylor

tests/test_init.py

@@ -124,7 +124,7 @@ def test_parse_config_file_invalid_schema(self):
         with self.assertRaises(ChipFlowError) as cm:
             _parse_config_file(config_path)
 
-        self.assertIn("Validation error in chipflow.toml", str(cm.exception))
+        self.assertIn("Syntax error in `chipflow.toml`", str(cm.exception))
 
     @mock.patch("chipflow_lib._ensure_chipflow_root")
     @mock.patch("chipflow_lib._parse_config_file")
@@ -136,5 +136,6 @@ def test_parse_config(self, mock_parse_config_file, mock_ensure_chipflow_root):
         config = _parse_config()
 
         mock_ensure_chipflow_root.assert_called_once()
-        mock_parse_config_file.assert_called_once_with(Path("/mock/chipflow/root/chipflow.toml"))
+        # We're expecting a string, not a Path
+        mock_parse_config_file.assert_called_once_with("/mock/chipflow/root/chipflow.toml")
         self.assertEqual(config, {"chipflow": {"test": "value"}})