What is the best way to test vision on bnet maps? For example testing if a proxy building can be seen by units on high ground or xel'naga towers. I can't think of a way to do it, because if I'm building the buildings, then I cannot tell whether the opponent can see them.
One idea was to try the map editor, placing buildings there and testing the map, but I can't find any battle.net maps on my local hard drive. Where are they?