diff -r 2bc526c28a3f -r f60e0908f80b marking1/drumb_test3.scala
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/marking1/drumb_test3.scala	Mon Nov 27 01:15:36 2017 +0000
@@ -0,0 +1,20 @@
+
+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
+
+assert(urban_rstate_res > 30885 && urban_rstate_res < 30905)
+assert(urban_blchip_res > 349587 && urban_blchip_res < 349607)