i found this from learnreligions.com:
If you wonder if you have become enlightened, it is almost certain you have not. The only way to test one's insight is to present it to a dharma teacher. Don't be dismayed if your achievement falls apart under a teacher's scrutiny. False starts and mistakes are a necessary part of the path, and if and when you achieve enlightenment, it will be built on a solid foundation and you will have no mistake about it.
i was reading about LUANGPOR TEEAN. he is a dead thai monk that was enlightened. upon his enlightenment he was asked questions like 'how do you know yourself?' , 'is salt salty?', 'among black colors, which is more black?', etc
what is the standard (good) way of interrogating the enlightened?