public void WhenFirstPlayerStartsInCorner_ThenDoMoveMustPutPieceInCenter()
{
ComputerPlayer target = new ComputerPlayer();
var board = new Piece[3, 3];
board[0, 0] = Piece.X; board[1, 0] = Piece.Empty; board[2, 0] = Piece.Empty;
board[0, 1] = Piece.Empty; board[1, 1] = Piece.Empty; board[2, 1] = Piece.Empty;
board[0, 2] = Piece.Empty; board[1, 2] = Piece.Empty; board[2, 2] = Piece.Empty;
var boardState = new BoardState(null);
boardState.Board = board;
target.DoMove(Piece.O, boardState);
Assert.AreEqual(Piece.O, boardState.Board[1, 1]);
}
public void WhenComputerPlayerHasPossibilityToWinInNextMove_ThenDoMoveMustMustSelectWinningMove()
{
ComputerPlayer target = new ComputerPlayer();
var board = new Piece[3, 3];
board[0, 0] = Piece.X; board[1, 0] = Piece.O; board[2, 0] = Piece.X;
board[0, 1] = Piece.X; board[1, 1] = Piece.O; board[2, 1] = Piece.Empty;
board[0, 2] = Piece.Empty; board[1, 2] = Piece.Empty; board[2, 2] = Piece.Empty;
var boardState = new BoardState(null);
boardState.Board = board;
target.DoMove(Piece.O, boardState);
Assert.AreEqual(Piece.O, boardState.Board[1, 2]);
}
public void WhenAllButOnePositionsAreFull_ThenDoMoveUsesLastPosition()
{
ComputerPlayer target = new ComputerPlayer();
var board = new Piece[3, 3];
board[0, 0] = Piece.O; board[1, 0] = Piece.X; board[2, 0] = Piece.O;
board[0, 1] = Piece.O; board[1, 1] = Piece.O; board[2, 1] = Piece.X;
board[0, 2] = Piece.X; board[1, 2] = Piece.X; board[2, 2] = Piece.Empty;
var boardState = new BoardState(null);
boardState.Board = board;
target.DoMove(Piece.O, boardState);
Assert.AreEqual(Piece.O, boardState.Board[2, 2]);
}