For light aircraft, I've certainly always carried out fast taxiing before a first flight (of a new type or variant, which de-facto is also all homebuilts) - generally whatever FTI was available for test flying (which is usually minimal in my life!) I'd have also for fast taxi.
Tests would normally cover slow taxi & braking, fast taxi: tracking and braking, accelerate to rotate+ and slow to stop, low hops with basic control checks in ground effect, then landing off that to demonstrate pitch control into the flare. Probably an undercarriage inspection after that before first flight, and confirmation that the pitot-static system was giving something halfway sensible.
I'd assume that more complex aircraft would also encompass checks on the various manual and auto braking systems, although runway length may well preclude hops.
G