Airbus will have an ATM (Acceptance Test manual) or similar document which will lay out: What, When, How and to which standards the aircraft and systems will be checked.
It`s not something to be taken lightly as a Pilot as you will be taking the aircraft into situations/scenario`s that will not be seen on the line or in the simulator. I was involved in accepting a type for 2 years and it is still the a/c I was the most "current/knowledgable" on. A good read and eye opener is Alex Henshaws book "Sigh for a Merlin".
So if you want your Airbus test flown get the Pilots who accept them at the factory - same for Boeing, Eurocopter, Pilatus etc...