fails:Hash#each_value calls block once for each key, passing value
fails:Hash#each_value processes values in the same order as values()
fails:Hash#each_value returns an Enumerator if called on a non-empty hash without a block
fails:Hash#each_value returns an Enumerator if called on an empty hash without a block
fails:Hash#each_value returns an Enumerator if called on a frozen instance
