should_sum_total_ratings.rb

class Test::Unit::TestCase
  def self.should_sum_total_ratings
    klass = model_class

    context "finding total ratings" do
      setup do
        @ratable = Factory(klass.to_s.downcase)
      end

      should "have zero total ratings if no rated talks" do
        assert_equal 0, @ratable.total_ratings
      end

      should "have one total rating if one delivery & content rating" do
        talk = block_given? ? yield(@ratable) : @ratable
        Factory(:content_rating,  :talk => talk)
        Factory(:delivery_rating, :talk => talk)

        assert_equal 1, @ratable.reload.total_ratings
      end
    end
  end
end