add test for edge case

tin/apps/assignments/tests/test_file_actions.py

@@ -44,7 +44,7 @@ def test_create_file_action_view(client, course) -> None:
     fa_data = model_to_dict(file_action)
 
     # try copying the data
-    response = client.post(f"{url}?action={file_action.id}", {**fa_data, "copy": True})
+    response = client.post(f"{url}?action={file_action.id}", fa_data | {"copy": True})
     assert (
         course.file_actions.count() == 2
     ), "Passing copy as a POST parameter should copy the file action"
@@ -54,6 +54,11 @@ def test_create_file_action_view(client, course) -> None:
     file_action.refresh_from_db()
     assert file_action.name == "New name!"
 
+    response = client.post(f"{url}?copy=1", fa_data)
+    assert (
+        course.file_actions.count() == 3
+    ), f"Passing copy without an action should create a file action (got {response})"
+
 
 @login("teacher")
 def test_delete_file_action_view(client, course, file_action) -> None: