Rails 4.1 breaks models/response_set_spec

[kjayma]

response_set_specs fails in "describe 'as a quiz'".

The ResponseSet.correctness_hash method tries to call the Ruby compact method against the self.responses ActiveRecord relation.

The release notes for Rails 4.1 indicates:

Relation no longer has mutator methods like #map! and #delete_if. Convert to an Array by calling #to_a before using these methods. (Pull Request)

The blacklisted methods include compact (See changes to activerecord/lib/active_record/relation/delegation.rb in the pull request) and therefore breaks the code in correctness_hash.

P.S. - I realize 4.1 is not yet officially supported, but most of the code works well in 4.1.