monkey patched collection_spec.rb

module DataMapper
  class Collection
    def update!(attributes = {})
      assert_update_clean_only(:update!)

      model = self.model
      model_inst = model.new(attributes)				
      dirty_attributes = model_inst.dirty_attributes

      if dirty_attributes.empty?
        true
      elsif dirty_attributes.any? { |property, value| !property.valid?(property.get!(model_inst)) }
	false
      else
	unless _update(dirty_attributes)
	  return false
	end

	if loaded?
	  each do |resource|
	    dirty_attributes.each { |property, value| property.set!(resource, value) }
	    repository.identity_map(model)[resource.key] = resource
	  end
	end
       
       true
      end
    end
  end
end