Mandate assessment of manual handbrake use in practical driving test

Driving tests do not always assess the use of a handbrake, but many cars 17yo's are guided to buy by motoring organisations typically have one. Nobody should be expected to do a hill start using the handbrake, for the first time, after passing. What if someone parked behind them on a hill? Some instructors are teaching in cars that lack the basic controls learners need to manage. I feel if you don't learn to use a manual handbrake, then like with a manual gearbox, you're not ready for it.