As a user, I want to add a product to cart, so I can purchase it.
- Identify the various ways a user can uniquely add a product to the cart.
- Create tests that exercise those scenarios and succesfully place orders.
As a user, I want to sort products from high to low, so I know what I can afford.
- Create a test that sorts products from high to low.
- Confirm the ordering is correct by making sure the first product has the highest price on the page