samePropertyValuesAs works only with Java Bean object

[lvguowei]

https://github.com/sf105/goos-code/blob/5dff69366dadef4c4bc699fdb19282f53d322cb0/test/unit/test/auctionsniper/AuctionSniperTest.java#L47

samePropertyValuesAs only works with Java Bean objects (private fields with getters and setters), since SniperSnapshot is not, I think this test will always pass.