public void EnPassantTest()
{
ChessBoard b = CreateBoardWithPositions(
Pos("a5"), ChessPieceType.Pawn, 1,
Pos("e1"), ChessPieceType.King, 1,
Pos("b7"), ChessPieceType.Pawn, 2,
Pos("e8"), ChessPieceType.King, 2);
ApplyMove(b, Move("e1", "e2"));
// move black pawn forward twice
ApplyMove(b, Move("b7", "b5"));
var possMoves = b.GetPossibleMoves() as IEnumerable <ChessMove>;
var enPassantExpected = GetMovesAtPosition(possMoves, Pos("a5"));
enPassantExpected.Should().HaveCount(2, "pawn can move forward one or en passant").And
.Contain(Move("a5", "a6")).And.Contain(Move("a5", "b6"));
// Apply the en passant
ApplyMove(b, Move("a5", "b6"));
BlankView.PrintView(Console.Out, b);
var pawn = b.GetPieceAtPosition(Pos("b6"));
pawn.Player.Should().Be(1, "pawn performed en passant move");
pawn.PieceType.Should().Be(ChessPieceType.Pawn);
var captured = b.GetPieceAtPosition(Pos("b5"));
captured.Player.Should().Be(0, "the pawn that moved to b5 was captured by en passant");
b.Value.Should().Be(1);
GetAllPiecesForPlayer(b, 1).Should().HaveCount(2, "white controls a pawn and king");
GetAllPiecesForPlayer(b, 2).Should().HaveCount(1, "black only controls a king");
// Undo the move and check the board state
b.UndoLastMove();
b.Value.Should().Be(0);
pawn = b.GetPieceAtPosition(Pos("a5"));
pawn.Player.Should().Be(1);
captured = b.GetPieceAtPosition(Pos("b5"));
captured.Player.Should().Be(2);
var empty = b.GetPieceAtPosition(Pos("b6"));
empty.Player.Should().Be(0);
GetAllPiecesForPlayer(b, 1).Should().HaveCount(2, "white controls a pawn and king");
GetAllPiecesForPlayer(b, 2).Should().HaveCount(2, "black controls a pawn and king");
}
public void Castling4()
{
ChessBoard b = CreateBoardWithPositions(
Pos("e8"), ChessPieceType.King, 2,
Pos("e1"), ChessPieceType.King, 1,
Pos("h1"), ChessPieceType.RookKing, 1); //create a board with possible castling position
ApplyMove(b, Move("e1", "g1")); //castling king normally cant move this way
ApplyMove(b, Move("e8", "e7"));
var poss = b.GetPossibleMoves() as IEnumerable <ChessMove>;
//var possible = b.GetPossibleMoves();
// possible.Should().BeEmpty();
var Rooking = GetMovesAtPosition(poss, Pos("f1"));
Rooking.Should().HaveCount(12, "After Castling"); //
BlankView.PrintView(Console.Out, b); //view the board to see the castling
var King = b.GetPieceAtPosition(Pos("g1")); //king should position at g1
var RookKing = b.GetPieceAtPosition(Pos("f1")); // rook should position at f1
King.Player.Should().Be(1, "King Castling"); //verify player of the castling king
RookKing.Player.Should().Be(1, "RookKing Castling"); //verify player of the castling rook
King.PieceType.Should().Be(ChessPieceType.King);
RookKing.PieceType.Should().Be(ChessPieceType.RookKing);
b.UndoLastMove(); // undo twice undo kings move
b.UndoLastMove(); //undo castling
King = b.GetPieceAtPosition(Pos("e1"));
King.Player.Should().Be(1);
RookKing = b.GetPieceAtPosition(Pos("h1"));
RookKing.Player.Should().Be(1);
GetAllPiecesForPlayer(b, 1).Should().HaveCount(2, "white controls a King and RookKing");
GetAllPiecesForPlayer(b, 2).Should().HaveCount(1, "black controls a King");
}
public void CastlingTest7()
{
ChessBoard b = CreateBoardWithPositions(
Pos("e1"), ChessPieceType.King, 1,
Pos("a1"), ChessPieceType.RookQueen, 1);
var possMoves = b.GetPossibleMoves() as IEnumerable <ChessMove>;
var castlingExpected = GetMovesAtPosition(possMoves, Pos("e1"));
castlingExpected.Should().HaveCount(6, "king can move (1) left, (2) right, (3) up, (4) diagonal left, (5) diagonal right, or (6) castling")
.And.Contain(Move("e1", "d1"))
.And.Contain(Move("e1", "f1"))
.And.Contain(Move("e1", "e2"))
.And.Contain(Move("e1", "d2"))
.And.Contain(Move("e1", "f2"))
.And.Contain(Move("e1", "c1"));
// Apply the castling
ApplyMove(b, Move("e1", "c1"));
BlankView.PrintView(Console.Out, b);
var king = b.GetPieceAtPosition(Pos("c1"));
king.Player.Should().Be(1, "king performed castling move");
king.PieceType.Should().Be(ChessPieceType.King);
var rook = b.GetPieceAtPosition(Pos("d1"));
rook.Player.Should().Be(1, "the queenside rook should take place next to the king on his right");
// Undo the move and check the board state
b.UndoLastMove();
king = b.GetPieceAtPosition(Pos("e1"));
king.Player.Should().Be(1);
rook = b.GetPieceAtPosition(Pos("a1"));
rook.Player.Should().Be(1);
var empty = b.GetPieceAtPosition(Pos("b1"));
empty.Player.Should().Be(0);
}