gistfile1.rb

module Spec
  module Rails
    module Matchers
 
      def have_sane_through_associations
        return simple_matcher(":through associations not to have the :dependent options}") do |model|
          model = model.class if model.is_a? ActiveRecord::Base
          not model.reflect_on_all_associations.any?{|a| a.options[:through] && a.options[:dependent]}
        end
      end

    end
  end
end

# Usage

User.should have_sane_through_associations