public void QueenCanNotAttack()
 {
     Assert.AreEqual(false, QueenAttack.QueenCanAttack(7, 0, 6, 7));
 }
 public void QueenCanAttack_YEqualsY()
 {
     Assert.AreEqual(true, QueenAttack.QueenCanAttack(2, 4, 3, 4));
 }
 public void QueenCanAttack_XMinusXEqualsYMinusY()
 {
     Assert.AreEqual(true, QueenAttack.QueenCanAttack(3, 6, 6, 3));
 }
 public void QueenCanAttack_XEqualsX()
 {
     Assert.AreEqual(true, QueenAttack.QueenCanAttack(2, 4, 2, 5));
 }