public void Step_DoesAgentAndOpponentMoves()
{
var placeXAtTopLeft = new TicTacToeAction {
Position = 0, Tile = BoardTile.X
};
var placeOAtTopMiddle = new TicTacToeAction {
Position = 1, Tile = BoardTile.O
};
_opponent.GetAction(Arg.Any <Board>())
.Returns(placeOAtTopMiddle);
var expectedBoard = Board
.CreateEmptyBoard()
.DoAction(placeXAtTopLeft)
.DoAction(placeOAtTopMiddle);
// act
var observation = _env.Step(placeXAtTopLeft);
// assert
Assert.AreEqual(expectedBoard.ToString(), observation.Board.ToString());
}
