Re: Pop quiz, hot shot
Yes, in my Nidan test.
A friend had his Shodan test. Between the parts of his test, me and another friend were asked to "show" some other things, without being told we are being tested.
After the friends test was over, Sensei said he past, and "Oh yea, ... & Amir have also passed and are now Nidan".
I guess such things are easier whrn your teacher is allowed (within your org) to test you and rank you on his own.