Digital River allows you to self-service your own test account, which you can use to fully test the Digital River Extension for Magento in a staging environment. To do so:
Follow the instructions in the Dashboard Quickstart Guide for the creation of a test account.
Configure your Magento store with your test account’s public and secret keys.
In your Catalog, fill out the Digital River fields on a product and save it.
In the Catalog Sync Grid, click Manual Sync To Digital River.
When the sync completes, verify that the status is
Place an order in your storefront for one of the products you synced to Digital River.
After placing the order, view that order in the Magento admin screens.
In the Order & Account Information section, verify that you see a (DR) Digital River Order ID.