public void testSimpleDiagonalAttack() {
XYLocation loc = new XYLocation(3, 3);
board.addQueenAt(loc);
Assert.assertEquals(0, board.getNumberOfAttacksOn(loc));
Assert.assertEquals(1, board.getNumberOfAttacksOn(loc.down().right()));
Assert.assertEquals(1, board.getNumberOfAttacksOn(loc.down().left()));
Assert.assertEquals(1, board.getNumberOfAttacksOn(loc.up().left()));
Assert.assertEquals(1, board.getNumberOfAttacksOn(loc.up().right()));
Assert
.assertEquals(1, board
.getNumberOfAttacksOn(new XYLocation(7, 7)));
Assert
.assertEquals(1, board
.getNumberOfAttacksOn(new XYLocation(0, 0)));
Assert
.assertEquals(1, board
.getNumberOfAttacksOn(new XYLocation(6, 0)));
Assert
.assertEquals(1, board
.getNumberOfAttacksOn(new XYLocation(0, 6)));
}