The ApiQueryCheckUser class has relatively low test coverage (around 30% based on https://doc.wikimedia.org/cover-extensions/CheckUser/src/Api/ApiQueryCheckUser.php.html ) and crucially has no tests that verify the output of a successful call to the API. Such tests are needed to ensure that changes in the parent tasks are made without breaking the existing results of the API.
Acceptance criteria
- Add tests to ApiQueryCheckUser that at least bring good test coverage to ::execute