Is he the boss of the whole company? If not, I’d seriously consider taking the test—not because you need to prove anything, but so you can document that you cooperated.
Then, I’d write an email to the highest boss and explain calmly and professionally that you're very concerned about this behavior. Let them know you felt uncomfortable and that this incident has made you think deeply about your workplace, your position, and your general well-being there.
dont act on revenge or be stupid yourself. that behaviour he showed there is not even acceptable in the slightest.
if you are angry now and upset, take some time to sleep over it. take a day off, or maybe 2.
sounds like discrimination based on race, religion, etc.
very nice of him to leave you a paper trail
yes. exactly.