public void Prevent_White_Pawn_Movement_Backwards()
{
var board = SetupBoard();
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.White);
IRule rule = new ValidPawnMoveRule();
Move move = new Move(piece, 0, 1, 0, 0);
Assert.That(rule.IsMoveValid(board, move), Is.False);
}
public void Prevent_Black_Pawn_Advancement_To_Occupied_Square()
{
var board = SetupBoard(5, PieceColor.White);
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move move = new Move(piece, 0, 6, 0, 5);
Assert.That(rule.IsMoveValid(board, move), Is.False);
}
public void Prevent_Black_Advancement_By_Greater_Than_One_Square_When_Off_Home_Rank()
{
var board = SetupBoard();
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move move = new Move(piece, 0, 5, 0, 3);
Assert.That(rule.IsMoveValid(board, move), Is.False);
}
public void Prevent_Black_Pawn_Horizontal_Movement_Without_Capture()
{
var board = SetupBoard();
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move move = new Move(piece, 0, 6, 1, 6);
Assert.That(rule.IsMoveValid(board, move), Is.False);
}
public void Prevent_Black_Double_Step_From_Home_Rank_To_Occupied_Square()
{
var board = SetupBoard(4, PieceColor.White);
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move move = new Move(piece, 0, 6, 0, 4);
Assert.That(rule.IsMoveValid(board, move), Is.False);
}
public void Allow_White_Double_Step_From_Home_Rank_To_Unoccupied_Square()
{
var board = SetupBoard();
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.White);
IRule rule = new ValidPawnMoveRule();
Move move = new Move(piece, 0, 1, 0, 3);
Assert.That(rule.IsMoveValid(board, move), Is.True);
}
public void Allow_Black_Pawn_Advancement_To_Unoccupied_Square()
{
var board = SetupBoard();
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move move = new Move(piece, 0, 7, 0, 6);
Assert.That(rule.IsMoveValid(board, move), Is.True);
}
public void Prevent_Black_Capture_On_Double_Step()
{
var board = SetupBoard(4, PieceColor.White);
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move leftCapture = new Move(piece, 1, 6, 0, 4);
Assert.That(rule.IsMoveValid(board, leftCapture), Is.False);
Move rightCapture = new Move(piece, 1, 6, 2, 4);
Assert.That(rule.IsMoveValid(board, rightCapture), Is.False);
}
public void Allow_Black_En_Passant()
{
var board = SetupBoard(3, PieceColor.White, 2);
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move leftCapture = new Move(piece, 1, 3, 0, 2);
Assert.That(rule.IsMoveValid(board, leftCapture), Is.True);
Move rightCapture = new Move(piece, 1, 3, 2, 2);
Assert.That(rule.IsMoveValid(board, rightCapture), Is.True);
}
public void Prevent_Black_Capture_Movement_On_Unoccupied_Square_Without_En_Passant()
{
var board = SetupBoard(3, PieceColor.White);
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move leftCapture = new Move(piece, 1, 3, 0, 2);
Assert.That(rule.IsMoveValid(board, leftCapture), Is.False);
Move rightCapture = new Move(piece, 1, 3, 3, 2);
Assert.That(rule.IsMoveValid(board, rightCapture), Is.False);
}
public void Allow_Black_Capture_Movement_On_White_Occupied_Square()
{
var board = SetupBoard(6, PieceColor.White);
var piece = Substitute.For <IChessPiece>();
piece.Color.Returns(PieceColor.Black);
IRule rule = new ValidPawnMoveRule();
Move leftCapture = new Move(piece, 1, 7, 0, 6);
Assert.That(rule.IsMoveValid(board, leftCapture), Is.True);
Move rightCapture = new Move(piece, 1, 7, 2, 6);
Assert.That(rule.IsMoveValid(board, rightCapture), Is.True);
}
