I really don't like having test code in the main code.  I think you should keep a list of starting locations in the TestCase itself.  When testDriver.runAll(Server server) is called, after you call server.newGame(...) you use the server to find the Players and move them to their starting locations.  See https://github.com/oharaandrew314/3303Bomberman/blob/dev/test/test/integration/helpers/MockServer.java#L31-38