if i get the Qlivkiew server test license linked with the production server, that means that i will have the same amount of licenses as in production.
If your Qlikview sytem is medium/small - I suggest you go use PROD server as DEV,UAT as well.
We need to manage folder structure carefully.
So that no need to buy license. It will be very much economical as per cost and maintenance wise.
Hope this will help you.