public void PlayersMustMoveWithinTheTopLeftBoundsOfTheBoard()
{
var naughts = new TurnByTurnPlayerStub();
var game = new TicTacToeGame(naughts, null);
naughts.Next(0, 0);
Assert.Throws<InvalidMoveException>(() => game.PlayTurn());
}
public void PlayerAlwaysWinsOrDrawsIfStartsTheGame()
{
var naughts = new TurnByTurnPlayerStub();
var crosses = new MiniMaxPlayer(naughts);
var result = PlayAllPossibleGames(new TicTacToeBoard(), crosses, naughts);
Assert.That(result.Losses, Is.EqualTo(0));
}
public void NaughtsStartsTheGame()
{
var naughts = new TurnByTurnPlayerStub();
var game = new TicTacToeGame(naughts, null);
naughts.Next(1, 1);
game.PlayTurn();
Assert.That(game.PlayerOnSquare(1, 1), Is.EqualTo(naughts));
}
public void PlayersAlternateTurns()
{
var naughts = new TurnByTurnPlayerStub();
var crosses = new TurnByTurnPlayerStub();
var game = new TicTacToeGame(naughts, crosses);
naughts.Next(1, 1);
game.PlayTurn();
Assert.That(game.CurrentPlayer, Is.EqualTo(crosses));
}
public void MakeWinningMove()
{
var naughts = new TurnByTurnPlayerStub();
var crosses = new MiniMaxPlayer(naughts);
var board = new TicTacToeBoard(new ITicTacToePlayer[]
{
naughts, null, crosses,
null, naughts, null,
naughts, null, crosses
});
var position = crosses.PlayTurn(board);
Assert.That(position, Is.EqualTo(new BoardPosition(2, 3)));
}
public void FindBestStartingMove()
{
var naughts = new TurnByTurnPlayerStub();
var crosses = new MiniMaxPlayer(naughts);
var board = new TicTacToeBoard(new ITicTacToePlayer[]
{
null, null, null,
null, null, null,
null, null, null
});
var position = crosses.PlayTurn(board);
Assert.That(position, Is.EqualTo(new BoardPosition(1, 1)));
}
public void PlayersTurnIsNotOverUntilTheyMakeAValidMove()
{
var naughts = new TurnByTurnPlayerStub();
var crosses = new TurnByTurnPlayerStub();
var game = new TicTacToeGame(naughts, crosses);
naughts.Next(1, 1);
game.PlayTurn();
crosses.Next(1, 1);
game.PlayTurn();
Assert.That(game.CurrentPlayer, Is.EqualTo(crosses));
}
public void OnlyOnePlayerCanClaimEachSquare()
{
var naughts = new TurnByTurnPlayerStub();
var crosses = new TurnByTurnPlayerStub();
var game = new TicTacToeGame(naughts, crosses);
naughts.Next(1, 1);
game.PlayTurn();
crosses.Next(1, 1);
game.PlayTurn();
Assert.That(game.PlayerOnSquare(1, 1), Is.EqualTo(naughts));
}
public void PlayerAlwaysWinsOrDrawsIfOtherPlayerStartsTheGame()
{
var naughts = new TurnByTurnPlayerStub();
var crosses = new MiniMaxPlayer(naughts);
var board = new TicTacToeBoard();
var tally = ScoreTally.Start;
foreach (var square in board.VacantSquares)
{
var results = PlayAllPossibleGames(board.UpdateBoard(square, naughts), crosses, naughts);
tally = tally + results;
}
Assert.That(tally.Losses, Is.EqualTo(0));
}