public void CountCapturableByPiece_ThereIsNoEnemyPieceAround_Zero()
        {
            var target = new CheckersBoard(8);

            foreach (var p in target.PlayerOnePieces)
            {
                Assert.AreEqual(0, target.CountCapturableByPiece(p));
            }

            foreach (var p in target.PlayerTwoPieces)
            {
                Assert.AreEqual(0, target.CountCapturableByPiece(p));
            }
        }
        public void CountCapturableByPiece_ThereIsEnemyPieceAroundButCannotBeCaptured_Zero()
        {
            var target = new CheckersBoard(8);
            var piece  = target.GetSquare(1, 2).CurrentPiece;

            Assert.IsTrue(target.MovePiece(new CheckersMove(piece, target.GetSquare(2, 3))));
            Assert.AreEqual(0, target.CountCapturableByPiece(piece));

            Assert.IsTrue(target.MovePiece(new CheckersMove(piece, target.GetSquare(3, 4))));
            Assert.AreEqual(0, target.CountCapturableByPiece(piece));

            Assert.IsFalse(target.MovePiece(new CheckersMove(piece, target.GetSquare(4, 5))));
            Assert.AreEqual(0, target.CountCapturableByPiece(piece));
        }
        public void CountCapturableByPiece_ThereIsEnemyPieceAround_CapturableCount()
        {
            var target = new CheckersBoard(8);
            var piece  = target.GetSquare(1, 2).CurrentPiece;

            Assert.IsTrue(target.MovePiece(new CheckersMove(piece, target.GetSquare(2, 3))));
            Assert.AreEqual(0, target.CountCapturableByPiece(piece));

            Assert.IsTrue(target.MovePiece(new CheckersMove(piece, target.GetSquare(3, 4))));
            Assert.AreEqual(0, target.CountCapturableByPiece(piece));

            var enemyPiece = target.GetSquare(4, 5).CurrentPiece;

            Assert.AreEqual(1, target.CountCapturableByPiece(enemyPiece));
            Assert.AreEqual(0, target.CountCapturableByPiece(piece));

            Assert.IsTrue(target.MovePiece(new CheckersMove(enemyPiece, target.GetSquare(2, 3))));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece));

            var otherPiece = target.GetSquare(2, 1).CurrentPiece;

            Assert.IsTrue(target.MovePiece(new CheckersMove(otherPiece, target.GetSquare(1, 2))));
            Assert.AreEqual(1, target.CountCapturableByPiece(otherPiece));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece));
        }
        public void CountCapturableByPiece_Null_Exception()
        {
            var target = new CheckersBoard(8);

            ExceptionAssert.IsThrowing(new ArgumentNullException("piece"), () =>
            {
                target.CountCapturableByPiece(null);
            });
        }
        public void CountCapturableByPiece_ThereIsTwoEnemyPieceAround_CapturableCountTwo()
        {
            var target = new CheckersBoard(8);
            var piece  = target.GetSquare(3, 2).CurrentPiece;

            Assert.AreEqual(0, target.CountCapturableByPiece(piece));

            var enemyPiece1 = target.GetSquare(6, 5).CurrentPiece;

            Assert.AreEqual(0, target.CountCapturableByPiece(piece));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece1));
            Assert.IsTrue(target.MovePiece(new CheckersMove(enemyPiece1, target.GetSquare(5, 4))));
            Assert.AreEqual(0, target.CountCapturableByPiece(piece));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece1));
            Assert.IsTrue(target.MovePiece(new CheckersMove(enemyPiece1, target.GetSquare(4, 3))));
            Assert.AreEqual(1, target.CountCapturableByPiece(piece));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece1));

            var enemyPiece2 = target.GetSquare(4, 5).CurrentPiece;

            Assert.AreEqual(1, target.CountCapturableByPiece(piece));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece2));
            Assert.IsTrue(target.MovePiece(new CheckersMove(enemyPiece2, target.GetSquare(3, 4))));
            Assert.AreEqual(1, target.CountCapturableByPiece(piece));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece2));
            Assert.IsTrue(target.MovePiece(new CheckersMove(enemyPiece2, target.GetSquare(2, 3))));
            Assert.AreEqual(2, target.CountCapturableByPiece(piece));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece2));
            Assert.AreEqual(0, target.CountCapturableByPiece(enemyPiece1));
        }