Hello,

Platonides requested that Jenkins runs unit tests using $wgDevelopementWarnings. That will trigger an error in the test suite and mark the build as failing whenever a test uses a deprecated method.

As mentioned in the bug report, if the test is legit and is actually testing a deprecated method, you can override the warning by using:

$this->hideDeprecated('deprecatedMethod').

Daniel Kinzler fixed several of them in the Wikidata branch, you can look at https://gerrit.wikimedia.org/r/#/c/21732/ | 96f7db3f

Bug request: https://bugzilla.wikimedia.org/38882