I'm also not sure what the test here is really doing, the test doesn't seem to be testing Bartik (it's testing Stark) and Bartik is the only functional (non-test) code we're changing. Am I missing something? I'm not against adding test coverage but if there's similar coverage elsewhere then I don't think we should add it on account of this issue. I ran the test locally and it passes both with and without the functional part of the patch.
Should the component be Bartik for this?
Test all bartik and classy themes with comment link weight changes
User interface changes