class Shoulda::Matchers::ActiveRecord::DefineEnumForMatcher

def to_hash(value) 

def to_hash(value)
  if value.is_a?(Array)
    value.each_with_index.inject({}) do |hash, (item, index)|
      hash.merge!(item.to_s => index)
    end
  else
    value.stringify_keys
  end
end