private void RunAssertionWindowStats(EPServiceProvider epService)
{
// Get the top 3 volumes for each symbol
EPStatement top3Prices = epService.EPAdministrator.CreateEPL(
"select * from " + typeof(SupportMarketDataBean).FullName +
"#unique(symbol)#sort(3, price desc)");
var testListener = new SupportUpdateListener();
top3Prices.Events += testListener.Update;
var beans = new object[10];
beans[0] = MakeEvent(SYMBOL_CSCO, 50);
epService.EPRuntime.SendEvent(beans[0]);
object[] result = top3Prices
.Select(x => x.Underlying)
.ToArray();
EPAssertionUtil.AssertEqualsExactOrder(new[] { beans[0] }, result);
Assert.IsTrue(testListener.IsInvoked);
EPAssertionUtil.AssertEqualsExactOrder((object[])null, testListener.LastOldData);
EPAssertionUtil.AssertEqualsExactOrder(new[] { beans[0] }, new[] { testListener.LastNewData[0].Underlying });
testListener.Reset();
beans[1] = MakeEvent(SYMBOL_CSCO, 20);
beans[2] = MakeEvent(SYMBOL_IBM, 50);
beans[3] = MakeEvent(SYMBOL_MSFT, 40);
beans[4] = MakeEvent(SYMBOL_C, 100);
beans[5] = MakeEvent(SYMBOL_IBM, 10);
epService.EPRuntime.SendEvent(beans[1]);
epService.EPRuntime.SendEvent(beans[2]);
epService.EPRuntime.SendEvent(beans[3]);
epService.EPRuntime.SendEvent(beans[4]);
epService.EPRuntime.SendEvent(beans[5]);
result = top3Prices
.Select(x => x.Underlying)
.ToArray();
EPAssertionUtil.AssertEqualsExactOrder(new[] { beans[4], beans[3], beans[5] }, result);
beans[6] = MakeEvent(SYMBOL_CSCO, 110);
beans[7] = MakeEvent(SYMBOL_C, 30);
beans[8] = MakeEvent(SYMBOL_CSCO, 30);
epService.EPRuntime.SendEvent(beans[6]);
epService.EPRuntime.SendEvent(beans[7]);
epService.EPRuntime.SendEvent(beans[8]);
result = top3Prices
.Select(x => x.Underlying)
.ToArray();
EPAssertionUtil.AssertEqualsExactOrder(new[] { beans[3], beans[8], beans[7] }, result);
top3Prices.Dispose();
}