Phase phase = game.getPhase();
phase.placeTowerPiece(new Position(1, -2));
//assertEquals(2, game.events.size()); //TowerIncreasedEvent, SelectActionEvent
TowerIncreasedEvent ev = (TowerIncreasedEvent) game.events.get(0);
ev.undo(game);
game.setPhase(phase);
String s2 = snapshotGame(game);
assertEquals(s1, s2);
}