Big no no! I know it was pretty common practice in GA years ago by a selected few checkies. If it isn’t in the AFM or SOPs, you’re on your own.
I recall an event that occurred a few years ago in PNG, where a very experienced Captain decided to intentionally disable a primary rudder hydraulic system in a Dash 8 to demonstrate something to the FO. He demonstrated that he was an idiot!
It went pear shaped although they recovered and the Captain was subsequently sacked, and quite rightly so!
It’s also an offence against the regs to do this type of stuff, hence if proven guilty one could end up in a world of pain.