event tests

lib/averages/Rema.cs

@@ -25,7 +25,11 @@ public class Rema : AbstractBase
         WarmupPeriod = period;
         Init();
     }
-
+    public Rema(object source, int period, double lambda = 0.5) : this(period, lambda)
+    {
+        var pubEvent = source.GetType().GetEvent("Pub");
+        pubEvent?.AddEventHandler(source, new ValueSignal(Sub));
+    }
     public override void Init()
     {
         base.Init();