test "should require login when user attempts to purchase deal while not logged in" do
    # override the ApplicationController#current_user override in test_helper
    # to fake out that the user is not logged in
    methods = {}
    ApplicationController.class_eval do
      methods[:current_user] = instance_method(:current_user)
      def current_user; nil; end
    end

    @request.cookies['school_id'] = @school.id
    post :confirm, { :id => @deal, :school_id => @school.id }

    assert_response :success
    assert_not_nil assigns(:login_required)
    assert_select "#form_error p", "Please login with your Facebook account."

    # restore test_helper fakeout of current_user
    ApplicationController.class_eval do
      define_method(:current_user) { methods[:current_user] }
    end
  end