How to prove evolution is wrong?

I am totally convince that evolution is true. However, a scientific theory should be falsifiable; and I dont know how falsifiable is with evolution

For example, a "good" trait could be explain the result of natural selection. But a "bad" trait could be explain as just base on chance, or the selection preasure is not enough.

so, my question is: if someone want to prove that evolution is wrong, what test can they make and what the expected result should be (if evolution theory is wrong)?