Honestly, if cheating is such a big concern, then it's very likely that the test isn't really testing your knowledge, but rather your memorization skills. I can't easily cheat if the answers require a unique perspective that I can't copy from somewhere else. Plagiarism is an entirely different thing, and a much more serious concern, the way I see it.

Besides, who gives a shit? Cheating is also an expression of problem-solving skills. I don't know why people make such a fuss when it comes to cheating on a test. Who cares?

Edit: also, most education in our world is tailored towards giving you the necessary skills to join the workforce. When was the last time you had to do whatever the hell it is that you do professionally today (and that you studied for years in order to be allowed, not necessarily able, to do), without doing something that would be qualified as cheating in education? Is it cheating to go on stack overflow? Is it cheating to pay and have someone do something for you when you're not entirely confident in your own abilities to do it? Once again: who fucking cares?