board.addQueenAt(loc1);
Assert.assertEquals(1, board.getNumberOfAttacksOn(loc1.right()));
board.addQueenAt(loc1.right().right());
Assert.assertEquals(1, board.getNumberOfAttacksOn(loc1));
Assert.assertEquals(2, board.getNumberOfAttacksOn(loc1.right()));
board.addQueenAt(loc1.right().down());
Assert.assertEquals(2, board.getNumberOfAttacksOn(loc1));
Assert.assertEquals(3, board.getNumberOfAttacksOn(loc1.right()));
Assert.assertEquals(2, board.getNumberOfAttacksOn(loc1.right().right()));