The best way to test your shop is to make an actual purchase. If you use FlickRocket for payment processing, you can do this by following the following procedure.
Credit Card Number: 4111 1111 1111 1111
CVS Code: 778
Expiration date: In the future
Card Holder: Does not matter
Once the purchase completes you can access the content.
Note: You can reset all your 'fake' purchases from your user settings under 'Company Management'.
Important: To use this method, you need to use the FlickRocket payment processing. To limit fraud, the purchases are limited to 20 per day.