2) Error:
CommentTest#test_: A comment created by an unlimited user should not allow duplicate votes. :
ActiveRecord::RecordInvalid: Validation failed: You have already voted for this comment
app/models/comment.rb:142:in `vote!'
test/unit/comment_test.rb:164:in `block (3 levels) in <class:CommentTest>'
3) Error:
CommentTest#test_: A comment created by an unlimited user should not allow upvotes by the creator. :
ActiveRecord::RecordInvalid: Validation failed: You cannot upvote your own comments
app/models/comment.rb:142:in `vote!'
test/unit/comment_test.rb:179:in `block (3 levels) in <class:CommentTest>'
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