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How to run a backtest locally?

I am struggling here. The basicTemplateAlgorithm.cs seems running.

I add my own test file RollingWindow.cs and the debug F5 just gave a null reference exception .

public class QCURollingWindow : QCAlgorithm
    {
        RollingWindow<TradeBar> _window = new RollingWindow<TradeBar>(7);

        public override void Initialize()
        {
            SetStartDate(2013, 10, 07);  //Set Start Date
            SetEndDate(2013, 10, 11);
            SetCash(25000);
            AddSecurity(SecurityType.Equity, "SPY", Resolution.Minute);
        }

        public void OnData(TradeBars data)
        {
            //Inject data into the rolling window.
            _window.Add(data["SPY"]);
            if (!_window.IsReady) return;

            if (_window[0].Close > _window[6].Close)
            {
                SetHoldings("SPY", -0.5);
                Debug("Short Stock");
            }
            else {
                SetHoldings("SPY", 0.5);
                Debug("Purchased Stock");
            }

        }
    }

I just copied the codes from tutorial and changed the dates as there's only four days' data.

Update Backtest



1 Comment

The null reference come from the function

public void DebugMessage(string message)
{
if (Messages.Count > 500) return;
Messages.Enqueue(new DebugPacket(_job.ProjectId, _backtestId, _compileId, message));

//Save last message sent:
_log.Add(_algorithm.Time.ToString(DateFormat.UI) + " " + message);
_debugMessage = message;
}

 

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Update Backtest



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