We already have tests for a few tabs at preferences page[1-3]. Create test for another tab, for example recent changes[4].
The test should navigate to the page, check that the URL is correct and that at least one expected element appears.
1: http://en.wikipedia.beta.wmflabs.org/wiki/Special:Preferences
2: https://github.com/wikimedia/mediawiki-core/blob/master/tests/browser/features/preferences.feature
3: https://gerrit.wikimedia.org/r/#/c/117088/
4: http://en.wikipedia.beta.wmflabs.org/wiki/Special:Preferences#mw-prefsection-rc
Version: wmf-deployment
Severity: normal
See Also:
https://bugzilla.wikimedia.org/show_bug.cgi?id=58900