diff -r 50a3b874008a -r 1616d06a0893 testing1/drumb_test6.scala
--- a/testing1/drumb_test6.scala	Sat Dec 15 13:46:54 2018 +0000
+++ b/testing1/drumb_test6.scala	Sat Dec 15 23:58:12 2018 +0000
@@ -1,21 +1,9 @@
-//println("starting test now")
+//val urban_deltas = get_deltas(get_prices(List("GOOG", "AAPL"), 2010 to 2012))
 
-/*
-import scala.concurrent._
-import scala.concurrent.duration._
-import ExecutionContext.Implicits.global
-import scala.language.postfixOps 
-
-val urban_prices = List(List(Some(71.539941), None), 
-                        List(Some(76.974614), None), 
-                        List(Some(65.226685), Some(6.35)), 
-                        List(Some(78.354649), Some(12.241)), 
-                        List(Some(85.517645), Some(38.188)))
+val ds_urban = List(List(Some(-0.03573992567129673), Some(0.539975124774038)), 
+                    List(Some(0.10103412653643493), Some(0.24777709700099845)))
 
 
-val urban_prices = List(List(Some(311.349976), Some(27.505054)), 
-			List(Some(300.222351), Some(42.357094)), 
-			List(Some(330.555054), Some(52.852215)))
 
-assert(get_deltas(urban_prices) == List(List(Some(-0.03573992567129673), Some(0.5399749442411563)), 
-                                        List(Some(0.10103412653643493), Some(0.2477771728154912))))
+assert(yearly_yield(ds_urban, 100, 0) == 125)
+assert(yearly_yield(ds_urban, 100, 1) == 117)