public void UpdatesAfterCorrectPeriodElapses()
{
const int periods = 3;
var periodSpan = Time.OneMinute;
var reference = new DateTime(2016, 04, 06, 12, 0, 0);
var referenceUtc = reference.ConvertToUtc(TimeZones.NewYork);
var timeKeeper = new TimeKeeper(referenceUtc);
var config = new SubscriptionDataConfig(typeof (TradeBar), Symbols.SPY, Resolution.Minute, TimeZones.NewYork, TimeZones.NewYork, true, false, false);
var security = new Security(SecurityExchangeHours.AlwaysOpen(TimeZones.NewYork), config, new Cash("USD", 0, 0), SymbolProperties.GetDefault("USD"));
security.SetLocalTimeKeeper(timeKeeper.GetLocalTimeKeeper(TimeZones.NewYork));
var model = new RelativeStandardDeviationVolatilityModel(periodSpan, periods);
security.VolatilityModel = model;
var first = new IndicatorDataPoint(reference, 1);
security.SetMarketPrice(first);
Assert.AreEqual(0m, model.Volatility);
const decimal value = 0.471404520791032M; // std of 1,2 is ~0.707 over a mean of 1.5
var second = new IndicatorDataPoint(reference.AddMinutes(1), 2);
security.SetMarketPrice(second);
Assert.AreEqual(value, model.Volatility);
// update should not be applied since not enough time has passed
var third = new IndicatorDataPoint(reference.AddMinutes(1.01), 1000);
security.SetMarketPrice(third);
Assert.AreEqual(value, model.Volatility);
var fourth = new IndicatorDataPoint(reference.AddMinutes(2), 3m);
security.SetMarketPrice(fourth);
Assert.AreEqual(0.5m, model.Volatility);
}
private static DateTime InitializeTest(out BasicTemplateAlgorithm algorithm, out Security security, out PartialMarketFillModel model, out MarketOrder order, out OrderTicket ticket)
{
var referenceTimeNY = new DateTime(2015, 12, 21, 13, 0, 0);
var referenceTimeUtc = referenceTimeNY.ConvertToUtc(TimeZones.NewYork);
algorithm = new BasicTemplateAlgorithm();
algorithm.SetDateTime(referenceTimeUtc);
var transactionHandler = new BacktestingTransactionHandler();
transactionHandler.Initialize(algorithm, new BacktestingBrokerage(algorithm), new TestResultHandler(Console.WriteLine));
Task.Run(() => transactionHandler.Run());
algorithm.Transactions.SetOrderProcessor(transactionHandler);
var config = new SubscriptionDataConfig(typeof(TradeBar), Symbols.SPY, Resolution.Second, TimeZones.NewYork, TimeZones.NewYork, false, false, false);
security = new Security(SecurityExchangeHours.AlwaysOpen(TimeZones.NewYork), config);
model = new PartialMarketFillModel(algorithm.Transactions, 2);
algorithm.Securities.Add(security);
algorithm.Securities[Symbols.SPY].FillModel = model;
security.SetMarketPrice(new Tick { Symbol = Symbols.SPY, Value = 100 });
algorithm.SetFinishedWarmingUp();
order = new MarketOrder(Symbols.SPY, 100, referenceTimeUtc) { Id = 1 };
var request = new SubmitOrderRequest(OrderType.Market, security.Type, security.Symbol, order.Quantity, 0, 0, algorithm.UtcTime, null);
ticket = algorithm.Transactions.ProcessRequest(request);
return referenceTimeUtc;
}
/// <summary>
/// Sets the current time interpeting the specified time as a local time
/// using the time zone used at instatiation.
/// </summary>
/// <param name="time">The local time to set the current time time, will be
/// converted into UTC</param>
public void SetCurrentTime(DateTime time)
{
_currentTime = time.ConvertToUtc(_setCurrentTimeTimeZone);
}
/// <summary>
/// Initializes a new instance of the <see cref="ManualTimeProvider"/> class
/// </summary>
/// <param name="currentTime">The current time in the specified time zone, if the time zone is
/// null then the time is interpreted as being in <see cref="TimeZones.Utc"/></param>
/// <param name="setCurrentTimeTimeZone">Specify to use this time zone when calling <see cref="SetCurrentTime"/>,
/// leave null for the deault of <see cref="TimeZones.Utc"/></param>
public ManualTimeProvider(DateTime currentTime, DateTimeZone setCurrentTimeTimeZone = null)
{
_setCurrentTimeTimeZone = setCurrentTimeTimeZone ?? TimeZones.Utc;
_currentTime = currentTime.ConvertToUtc(_setCurrentTimeTimeZone);
}
private static Security CreateSecurity(DateTime newLocalTime)
{
var security = new Security(CreateUsEquitySecurityExchangeHours(), CreateTradeBarConfig(), new Cash(CashBook.AccountCurrency, 0, 1m), SymbolProperties.GetDefault(CashBook.AccountCurrency));
TimeKeeper.SetUtcDateTime(newLocalTime.ConvertToUtc(security.Exchange.TimeZone));
security.Exchange.SetLocalDateTimeFrontier(newLocalTime);
security.SetLocalTimeKeeper(TimeKeeper.GetLocalTimeKeeper(TimeZones.NewYork));
security.SetMarketPrice(new IndicatorDataPoint(Symbols.SPY, newLocalTime, 100m));
return security;
}
