I am about to launch a program with a downloadable pdf attched once ourchased. How can I test this for pre launch?
Hi @loveofcooking 
make test orders either through the checkout or in the admin as orders or draft-orders
https://help.shopify.com/en/manual/checkout-settings/test-orders
https://help.shopify.com/en/manual/payments/shopify-payments/testing-shopify-payments
https://community.shopify.com/post/2281980
etc etc etc https://www.google.com/search?q=shopify+test+orders