adding input fields check to generated_output_names in order to catch the incomplete input before running

Author: djarecka

pydra/engine/helpers_file.py

@@ -519,7 +519,7 @@ def template_update(inputs, output_dir, map_copyfiles=None):
         if fld.type not in [str, ty.Union[str, bool]]:
             raise Exception(
                 f"fields with output_file_template"
-                "has to be a string or Union[str, bool]"
+                " has to be a string or Union[str, bool]"
             )
         dict_[fld.name] = template_update_single(
             field=fld, inputs_dict=dict_, output_dir=output_dir

pydra/engine/specs.py

@@ -425,6 +425,8 @@ def generated_output_names(self, inputs, output_dir):
             Takes into account the task input and the requires list for the output fields.
             TODO: should be in all Output specs?
         """
+        # checking the input (if all mandatory fields are provided, etc.)
+        inputs.check_fields_input_spec()
         output_names = ["return_code", "stdout", "stderr"]
         for fld in attr_fields(self):
             if fld.name not in ["return_code", "stdout", "stderr"]: