Improving field validation method + tests

Author: leandrodamascena

aws_lambda_powertools/event_handler/api_gateway.py

@@ -895,10 +895,8 @@ def _get_basic_type_schema(param_type: type) -> dict[str, str]:
             return {"type": "number"}
         elif isinstance(bool, param_type):
             return {"type": "boolean"}
-        elif isinstance(str, param_type):
-            return {"type": "string"}
         else:
-            return {"type": "string"}  # Default fallback
+            return {"type": "string"}
 
     @staticmethod
     def _openapi_operation_return(

aws_lambda_powertools/event_handler/middlewares/openapi_validation.py

@@ -343,8 +343,6 @@ def _request_params_to_args_with_pydantic_support(
                     values[field.name] = deepcopy(field.default)
                 continue
 
-            # Use _validate_field like _request_body_to_args does
-            values[field.name] = _validate_field(field=field, value=value, loc=loc, existing_errors=errors)
         else:
             # Regular parameter processing (existing logic)
             if not isinstance(field_info, Param):
@@ -360,8 +358,8 @@ def _request_params_to_args_with_pydantic_support(
                     values[field.name] = deepcopy(field.default)
                 continue
 
-            values[field.name] = _validate_field(field=field, value=value, loc=loc, existing_errors=errors)
-
+        # Use _validate_field like _request_body_to_args does
+        values[field.name] = _validate_field(field=field, value=value, loc=loc, existing_errors=errors)
     return values, errors