diff -r d59c7995bcb2 -r 54befaf23648 testing1/drumb_test7.scala
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/testing1/drumb_test7.scala	Thu Nov 08 23:42:03 2018 +0000
@@ -0,0 +1,26 @@
+
+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(CW6c.yearly_yield(CW6c.get_deltas(urban_prices), 100, 0) == 125)
+
+
+val urban_blchip_portfolio = List("GOOG", "AAPL", "MSFT", "IBM", "FB", "AMZN", "BIDU")
+val urban_rstate_portfolio = List("PLD", "PSA", "AMT", "AIV", "AVB", "BXP", "CCI", 
+                                  "DLR", "EQIX", "EQR", "ESS", "EXR", "FRT", "GGP", "HCP") 
+
+val urban_rstate_res = CW6c.investment(urban_rstate_portfolio, 1978 to 2017, 100)
+val urban_blchip_res = CW6c.investment(urban_blchip_portfolio, 1978 to 2017, 100)
+
+// the rstate value is 30895 because of a faulty ESS.cvs file
+
+// if you round after each year to a Long you get 30895 and 349597
+// if you work with doubles until the end and then round to a Long you get 30937 and 355204
+
+assert((urban_rstate_res > 30885 && urban_rstate_res < 30905) ||
+       (urban_rstate_res > 30927 && urban_rstate_res < 30947))
+
+assert((urban_blchip_res > 349587 && urban_blchip_res < 349607) ||
+       (urban_blchip_res > 355194 && urban_blchip_res < 355214))