There is absolutely a test to separate the good pilots from the rest. It is before you start the engine I will cover the airspeed indicator.
You will then takeoff fly a normal circuit and perform a normal landing with the correct landing attitude. at the chosen touch down point and on centerline with the aircraft straight.
If you can do that you are IMHO a "good pilot"
And if you try and you can't do that and end up crashing the airplane, I would love to see the insurance claim form........
What you don't say is whether this is a solo exercise for someone who thinks he is a good pilot and needs to prove it others or whether it is with an instructor (who thinks he is a good pilot and needs to prove it to the student)?
Frankly, there is a
lot more, IMHO, to being a good pilot. It is not something you can ever prove to yourself but depends on the opinion of those who have seen you fly and those who fly with you.