public static IEnumerable <TestCaseData> GetCastlingMoves(Color color, Move move)
{
const string emptyFenWhiteToMove = "4k3/8/8/8/8/8/8/4K3 w - - 0 1";
const string emptyFenBlackToMove = "4k3/8/8/8/8/8/8/4K3 b - - 0 1";
var rookInitialSquareIndex = MoveHelpers.GetRookMoveForCastleMove(move).SourceIndex;
var between = BoardHelpers.InBetween(rookInitialSquareIndex, move.SourceIndex);
var blockerPermutations = MovingPieceService.GetAllPermutationsOfSetBits(between.GetSetBits(), 0, 0)
.Where(x => x != 0);
var fen = color == Color.Black ? emptyFenBlackToMove : emptyFenWhiteToMove;
var board = fenTextToBoard.Translate(fen);
foreach (var permutation in blockerPermutations)
{
var editedBoard = (Board)board.Clone();
editedBoard.Occupancy[(int)color][(int)Piece.King] = permutation;
var strBlockers = string.Join(", ", permutation.GetSetBits());
yield return(new TestCaseData(editedBoard, move)
.SetName($"Blockers on indices {strBlockers}")
.Returns(MoveError.CastleOccupancyBetween));
}
yield return(new TestCaseData(board, move)
.SetName("No Blockers")
.Returns(MoveError.NoneSet));
}
private static IEnumerable <TestCaseData> SetupPathSquareValidation(Board board, Move castlingMove)
{
var totalOccupancy = board.Occupancy.Occupancy();
var enPassantSquare = board.EnPassantIndex;
var inBetweenSquares = BoardHelpers.InBetween(castlingMove.SourceIndex, castlingMove.DestinationIndex) |
castlingMove.DestinationValue;
var inBetweenSquareArr = inBetweenSquares.GetSetBits().ToArray();
var permutations =
MovingPieceService.GetAllPermutationsOfSetBits(inBetweenSquareArr, 0, 0)
.Distinct()
.ToList();
TestContext.WriteLine(permutations);
TestContext.WriteLine("----------------------------------------");
foreach (var attackedSquaresValue in permutations)
{
var bb = new Mock <IBitboard>();
var attackedSquares = attackedSquaresValue.GetSetBits();
foreach (var squareBetween in inBetweenSquareArr)
{
var isAttacked = attackedSquares.Contains(squareBetween);
SetupMock(board, squareBetween, totalOccupancy, enPassantSquare, bb, isAttacked);
}
var strBlockers = attackedSquares.Any() ? string.Join(", ", attackedSquares) : "[None]";
TestContext.WriteLine($"Returning test case for {attackedSquaresValue}");
var expectedReturnValue = attackedSquares.Any() ? MoveError.CastleThroughCheck : MoveError.NoneSet;
yield return(new TestCaseData(bb, board, castlingMove)
.SetName($"Indices Attacked: {strBlockers}")
.Returns(expectedReturnValue));
}
}
protected static IEnumerable <TestCase <CastlingAvailability, CastlingAvailability> > GetCastlingAbilityTestCases()
{
var max = 15ul;
var permutations = MovingPieceService.GetAllPermutationsOfSetBits(max.GetSetBits(), 0, 0);
var castlingCartesian = permutations.Distinct()
.Select(x => (CastlingAvailability)x)
.Select(x =>
new TestCase <CastlingAvailability, CastlingAvailability>(x,
x, $"{FENHelpers.MakeCastlingAvailabilityStringFromBitFlags(x)}")).ToArray();
return(castlingCartesian);
}
private static IEnumerable <MoveTestCase> GetTestCases(Color color, ushort squareIndex)
{
var moveSet = GetPawnShift(squareIndex, color);
var setSquares = MovingPieceService.GetSetBits(moveSet);
var permutations = MovingPieceService.GetAllPermutationsOfSetBits(setSquares, 0, 0);
var testCases = new List <MoveTestCase>();
foreach (var block in permutations)
{
var obstructionBoards = GetMovesFromObstructions(color, block, squareIndex);
testCases.Add(new MoveTestCase(squareIndex, color, 0, obstructionBoards.Occupancy,
obstructionBoards.MoveBoard));
}
return(testCases);
}
