Fixed factory completed_order_with_fees by skipping a failing and unnecessary part of the checkout workflow

Fixed factory's shipment_with shipping_fees trait by ensuring only one shipping_rate in the shipment

spec/factories.rb

@@ -385,6 +385,7 @@ FactoryBot.define do
 
       after(:create) do |shipment, evaluator|
         shipping_method = create(:shipping_method_with, :shipping_fee, shipping_fee: evaluator.shipping_fee)
+        shipment.shipping_rates.destroy_all # remove existing shipping_rates from shipment
         shipment.add_shipping_method(shipping_method, true)
       end
     end
@@ -408,6 +409,9 @@ FactoryBot.define do
       payment_calculator = build(:calculator_per_item, preferred_amount: evaluator.payment_fee)
       payment_method = create(:payment_method, calculator: payment_calculator)
       create(:payment, order: order, amount: order.total, payment_method: payment_method, state: 'checkout')
+
+      # skip the rebuilding of order.shipments from line_items and stock locations (this is enforced in checkout step :address to :delivery)
+      order.stub(:create_proposed_shipments)
       while !order.completed? do break unless order.next! end
     end
   end