public void HardComputerPlayer_NoWinOrLossImminent_CentreAndOneCornerOccupied_ChoosesAnotherCorner()
{
var board = new Board();
board.Squares[1, 1].State = SquareState.X;
board.Squares[0, 0].State = SquareState.O;
var player = new HardComputerPlayer();
var actual = player.PlayerInput(board.Squares);
Assert.Equal(SquareState.O, actual[0, 2].State);
Assert.Equal("O", actual[0, 2].DisplayCharacter);
}
public void HardComputerPlayer_CentreSquareAvailable_PrioritisesWin()
{
var board = new Board();
board.Squares[0, 0].State = SquareState.O;
board.Squares[0, 1].State = SquareState.O;
var player = new HardComputerPlayer();
var actual = player.PlayerInput(board.Squares);
Assert.Equal(SquareState.O, actual[0, 2].State);
Assert.Equal("O", actual[0, 2].DisplayCharacter);
Assert.Equal(SquareState.Empty, actual[1, 1].State);
Assert.Equal("5", actual[1, 1].DisplayCharacter);
}
public void HardComputerPlayer_NoWinOrLossImminent_ChoosesCentreSquare()
{
var board = new Board();
var player = new HardComputerPlayer();
var actual = player.PlayerInput(board.Squares);
var actualSquareStates = new List <SquareState>();
foreach (var square in actual)
{
actualSquareStates.Add(square.State);
}
Assert.Equal(9, actualSquareStates.Count);
Assert.Contains(SquareState.O, actualSquareStates);
Assert.Single(actualSquareStates.Where(x => x.Equals(SquareState.O)));
Assert.Equal(SquareState.O, actual[1, 1].State);
Assert.Equal("O", actual[1, 1].DisplayCharacter);
}