rspec: card - after update quantity, we also check the total cost

venshop_app/app/views/cards/_item_list.html.erb

@@ -56,7 +56,7 @@
             <td colspan="3">
             </td>
             <td colspan="<%= can_edit ? 3 : 2 %>">
-              <b><%= number_with_delimiter(total) %></b>
+              <div id="card-must-paid"><b><%= number_with_delimiter(total) %></b></div>
             </td>
           </tr>
           <% if can_edit %>

venshop_app/spec/requests/card_pages_spec.rb

@@ -68,6 +68,14 @@ describe "CardPages" do
         page.should have_xpath("//input[@id='cart-quantity-#{product.id}'][@value='#{amount}']")
         page.should have_selector(".cart-unit-price-#{product.id}", text: ActionController::Base.helpers.number_with_delimiter(product.price))
         page.should have_selector(".cart-total-price-#{product.id}", text: ActionController::Base.helpers.number_with_delimiter(product.price * amount))
+
+        total = 0
+        Product.all.each do |obj|
+          total += obj.price
+        end
+        total += (amount - 1) * product.price
+
+        page.should have_selector('#card-must-paid', text: ActionController::Base.helpers.number_with_delimiter(total))
       end
     end