Description
Desired behavior/Acceptance criteria (returned value, expected error, performance expectations, etc.)
- there should be tests with wrong-typed items;
- there should be tests with corner cases (like a Wikidata item reference vs. an expanded Wikidata item)
Completion checklist
- Before closing this task, review one by one the checklist available here: https://www.mediawiki.org/wiki/Abstract_Wikipedia_team/Definition_of_Done#Back-end_Task/Bug_completion_checklist