diff -r 40bdf9064e13 -r 63a1376cbebd marking1/drumb_test3.scala
--- a/marking1/drumb_test3.scala	Sat Nov 17 15:35:50 2018 +0000
+++ b/marking1/drumb_test3.scala	Sat Nov 17 22:39:02 2018 +0000
@@ -1,20 +1,4 @@
-val urban_prices1 = CW6c.get_prices(List("BIDU"), 2004 to 2008)
-val urban_prices2 = CW6c.get_prices(List("GOOG", "AAPL"), 2010 to 2012)
-val urban_prices3 = CW6c.get_prices(List("GOOG", "AAPL", "BIDU"), 2010 to 2012)
-
-val urban_deltas1 = CW6c.get_deltas(urban_prices1)
-val urban_deltas2 = CW6c.get_deltas(urban_prices2)
-val urban_deltas3 = CW6c.get_deltas(urban_prices3)
-
-assert(CW6c.yearly_yield(urban_deltas1, 100, 0) == 100)
-assert(CW6c.yearly_yield(urban_deltas1, 100, 2) == 192)
-assert(CW6c.yearly_yield(urban_deltas2, 100, 0) == 125)
-assert(CW6c.yearly_yield(urban_deltas3, 100, 0) == 164)
-assert(CW6c.yearly_yield(urban_deltas3, 100, 1) == 119)
-
-val urban_inv1 = CW6c.investment(List("IBM", "BIDU"), 2004 to 2008, 100)
-val urban_inv2 = CW6c.investment(List("GOOG", "AAPL", "BIDU"), 2010 to 2012, 100)
-
-assert(urban_inv1 >= 295 && urban_inv1 <= 301)
-assert(urban_inv2 >= 194 && urban_inv2 <= 198)
-
+assert(get_prices(List("GOOG", "AAPL"), 2010 to 2012) ==
+    List(List(Some(311.349976), Some(20.544939)), 
+         List(Some(300.222351), Some(31.638695)), 
+         List(Some(330.555054), Some(39.478039))))