Not sure these two expectations (lines 40 & 41) are testing what you want.  These expectations could pass even if the user doesn't change her vote: the page could show "1 upvote" and "0 downvotes" instead of 1 downvote.  You could do a within block here, or if there is text next to the count you could expect page to have content "1 downvote" and "0 upvotes".