Fix JobStoreDocument attribute access (#710)

* Update dev.py

* Fix accessing attributes of TaskDoc using dot

src/atomate2/cli/dev.py

@@ -67,21 +67,23 @@ def vasp_test_data(test_dir: str | Path, additional_file: list[str]) -> None:
 
     outputs = loadfn("outputs.json")
 
-    task_labels = [o["output"].task_label for o in outputs if isinstance(o, TaskDoc)]
+    task_labels = [
+        o.output.task_label for o in outputs if isinstance(o.output, TaskDoc)
+    ]
 
     if len(task_labels) != len(set(task_labels)):
         raise ValueError("Not all jobs have unique names")
 
     original_mapping = {}
     mapping = {}
     for output in outputs:
-        if not isinstance(output["output"], TaskDoc):
+        if not isinstance(output.output, TaskDoc):
             # this is not a VASP job
             continue
 
-        job_name = output["output"].task_label
-        orig_job_dir = strip_hostname(output["output"].dir_name)
-        folder_name = output["output"].task_label.replace("/", "_").replace(" ", "_")
+        job_name = output.output.task_label
+        orig_job_dir = strip_hostname(output.output.dir_name)
+        folder_name = output.output.task_label.replace("/", "_").replace(" ", "_")
 
         if len(task_labels) == 1:
             # only testing a single job