rspec: card - step 2 - prevent user direct access when no items in card

venshop_app/app/controllers/cards_controller.rb

@@ -98,7 +98,8 @@ class CardsController < ApplicationController
       @card_infos = session[:SHOPPING_CARD_SESSION_NAME]
     end
     if @card_infos.empty?
-      redirect_to cards_path
+      flash[:error] = "Please order before check out"
+      redirect_to products_path and return
     end
     if request.post?
       @errors = Array.new

venshop_app/spec/requests/card_pages_spec.rb

@@ -156,6 +156,15 @@ describe "CardPages" do
 
   describe "step 2" do
     describe "when not pass step 1" do
+      before do
+        Product.all.each do |product|
+          visit cards_path(card_action: 'remove', product_id: product.id)
+        end
+
+        visit url_for(controller: 'cards', action: 'checkout')
+      end
+
+      it { should have_selector('.alert.alert-error', text: 'Please order') }
     end
 
     describe "when click Continue" do