In order to support displaying whether a user is globally blocked on Special:CentralAuth for T358979, the SpecialCentralAuth class needs to be modified.
Currently SpecialCentralAuth class is completely untested (https://doc.wikimedia.org/cover-extensions/CentralAuth/includes/Special/SpecialCentralAuth.php.html) and therefore modifying the file has risks of introducing regressions.
Acceptance criteria
- Tests for SpecialCentralAuth exist, at least for the code that will be modified to implement T358979.