How do you perform a test order?
We need any order to come through your store after enabling e-commerce tracking. This can be a customer order or an order that you create. When you (or a customer) reach the final order confirmation page the order details are sent through to Google Analytics. Once we see some order data in Google Analytics we are able to tell you that the configuration is fully set up and working properly.
I hope that helps, but if you have any more questions don't hesitate to ask!