This test is very personal to the disabled handler, and should essentially be a long list of items that they check if they need it.
The test itself is simple, observe the dog doing the task, repeatily as required. Some items can not be tested, in those instances the handler must validate that it does the item. One plus of this test is that it’s the handlers quality control. This test is created by the handler, and used by the handler to ensure that the dog does everything they need it to do. It’s what grades the trainer on their ability to train the items and to match the expectations of the handler.