Not sure about rollers but I like the idea of practicing for a test twice before going for it. One of the British Cycling plans does this but literally just spent 30 minutes trying to find that plan but for some reason I can’t at least on my phone. I’ll try again once back at my PC on Monday.

The idea though is to perform two practice seassions to get a feel for where you are to help you plan a pace without the strain of an actual test.