public void ShouldHashInAnEnPassentSquare()
{
var board = new Game.Board();
const int enPassantSquare = 42;
var pawn1 = new Pawn {
Square = 1
};
board.HashEnPassant(enPassantSquare);
board.HashPiece(pawn1);
board.PositionKey.Should().NotBe(HashPawnSquareOne);
board.HashEnPassant(enPassantSquare);
board.PositionKey.Should().Be(HashPawnSquareOne);
}