Create shipment when creating a order for a subscription

A spec has been added to check that the attributes for the order states
after "cart" ("address", "delivery", "payment") are retained if the
order is transitioned to completion, BUT currently this is passing
because it is the only shipping method available.

app/services/order_factory.rb

@@ -15,8 +15,10 @@ def create
     set_user
     build_line_items
     set_addresses
+    create_shipment
     set_shipping_method
     create_payment
+
     @order
   end
 
@@ -66,6 +68,10 @@ def set_addresses
     @order.update_attributes(attrs.slice(:bill_address_attributes, :ship_address_attributes))
   end
 
+  def create_shipment
+    @order.create_proposed_shipments
+  end
+
   def set_shipping_method
     @order.select_shipping_method(attrs[:shipping_method_id])
   end

spec/services/order_factory_spec.rb

@@ -42,6 +42,19 @@
       expect(order.complete?).to be false
     end
 
+    it "retains address, delivery, and payment attributes until completion of the order" do
+      while !order.completed? do break unless order.next! end
+
+      order.reload
+
+      expect(order.customer).to eq customer
+      expect(order.shipping_method).to eq shipping_method
+      expect(order.payments.first.payment_method).to eq payment_method
+      expect(order.bill_address).to eq bill_address
+      expect(order.ship_address).to eq ship_address
+      expect(order.total).to eq 38.0
+    end
+
     context "when the customer does not have a user associated with it" do
       before { customer.update_attribute(:user_id, nil) }