refactor: Improve error message for file extension validation in local files overload

Author: AlePouroullis

src/humanloop/overload.py

@@ -133,7 +133,7 @@ def _handle_local_files(
 
         # Always raise error when file extension is detected (based on the outer if condition)
         raise HumanloopRuntimeError(
-            f"Path '{path}' includes a file extension which is not supported in API calls. "
+            f"Path '{path}' should not include any file extension in API calls. "
             f"When referencing files via the `path` parameter, use the path without extensions: '{path_without_extension}'. "
             f"Note: File extensions are only used when pulling specific files via the CLI."
         )

tests/custom/integration/test_local_file_operations.py

@@ -15,22 +15,22 @@
         # Using lambdas to defer path generation until we have access to the test_file fixture
         (
             lambda test_file: f"{test_file.path}.{test_file.type}",
-            "includes a file extension which is not supported",
+            "should not include any file extension in API calls",
             "Standard extension",
         ),
         (
             lambda test_file: f"{test_file.path}.{test_file.type.upper()}",
-            "includes a file extension which is not supported",
+            "should not include any file extension in API calls",
             "Uppercase extension",
         ),
         (
             lambda test_file: f"{test_file.path}.{test_file.type.capitalize()}",
-            "includes a file extension which is not supported",
+            "should not include any file extension in API calls",
             "Mixed case extension",
         ),
         (
             lambda test_file: f" {test_file.path}.{test_file.type} ",
-            "includes a file extension which is not supported",
+            "should not include any file extension in API calls",
             "With whitespace",
         ),
         # Slash path test cases