Testing for vote metrics

Action	Article	Explore
Upvote	1 or 1 user found it useful	events: upvote = 1, downvote = 0, total = 1
Downvote	0 or 1 user found it useful	events: upvote = 1, downvote = 1, total = 2
Remove vote	0 or 0 user found it useful	events: upvote = 1, downvote = 1, total = 2
Upvote	1 or 1 user found it useful	events: upvote = 2, downvote = 1, total = 3
Downvote	0 or 1 user found it useful	events: upvote = 2, downvote = 2, total = 4
Remove vote	0 or 0 user found it useful	events: upvote = 2, downvote = 2, total = 4