Display subtotal for delivery fees

app/assets/stylesheets/store/openfoodweb.css.scss

@@ -174,4 +174,15 @@ ul.product-listing {
       }
     }
   }
+
+  .subtotal {
+    width: 100%;
+    text-align: right;
+    text-transform: uppercase;
+    margin-top: 15px;
+
+    span.order-total {
+      @extend span.price;
+    }
+  }
 }

app/helpers/spree/orders_helper_decorator.rb

@@ -0,0 +1,7 @@
+module Spree
+  module OrdersHelper
+    def order_delivery_fee_subtotal(order)
+      number_to_currency order.line_items.map { |li| li.itemwise_shipping_cost }.sum
+    end
+  end
+end

app/views/spree/orders/_distributor_fees.html.haml

@@ -15,3 +15,9 @@
             %h4= link_to line_item.product.name, product_path(line_item.product)
           %td.item-shipping-method= line_item.shipping_method.name
           %td.item-shipping-cost= number_to_currency line_item.itemwise_shipping_cost
+
+  .subtotal{'data-hook' => 'delivery_fees_subtotal'}
+    %h5
+      = t(:subtotal)
+      \:
+      %span.order-total= order_delivery_fee_subtotal(@order)

spec/requests/consumer/checkout_spec.rb

@@ -56,11 +56,14 @@ feature %q{
     # Item        | Shipping Method     | Delivery Fee
     # Garlic      | Shipping Method Two | $2.00
     # Fuji apples | Shipping Method One | $1.00
+    #
+    # Subtotal: $3.00
     table = page.find 'table#delivery'
     rows = table.all('tr')
     rows[0].all('th').map { |cell| cell.text.strip }.should == ['Item',        'Shipping Method',     'Delivery Fee']
     rows[1].all('td').map { |cell| cell.text.strip }.should == ['Fuji apples', 'Shipping Method One', '$1.00']
     rows[2].all('td').map { |cell| cell.text.strip }.should == ['Garlic',      'Shipping Method Two', '$2.00']
+    page.should have_selector '#delivery-fees span.order-total', :text => '$3.00'
   end