--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/marking1/drumb_test6.scala	Sat Feb 02 01:21:43 2019 +0000
@@ -0,0 +1,9 @@
+//val urban_deltas = get_deltas(get_prices(List("GOOG", "AAPL"), 2010 to 2012))
+
+val ds_urban = List(List(Some(-0.03573992567129673), Some(0.539975124774038)), 
+                    List(Some(0.10103412653643493), Some(0.24777709700099845)))
+
+
+
+assert(yearly_yield(ds_urban, 100, 0) == 125)
+assert(yearly_yield(ds_urban, 100, 1) == 117)