diff -r 317e49b9cab6 -r 72e43cb53c13 main_testing1/drumb_test7.scala
--- a/main_testing1/drumb_test7.scala	Mon Nov 08 01:03:09 2021 +0000
+++ b/main_testing1/drumb_test7.scala	Mon Nov 08 01:16:13 2021 +0000
@@ -8,17 +8,17 @@
 }
 */
 
-assert(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2000, 100) == 100)
-assert(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2001, 100) == 27)
-assert(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2002, 100) == 42)
-assert(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2003, 100) == 27)
-assert(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2004, 100) == 38)
+assert(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2000, 100) == 100)
+assert(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2001, 100) == 27)
+assert(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2002, 100) == 42)
+assert(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2003, 100) == 27)
+assert(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2004, 100) == 38)
 
 // 113
-assert((112 to 114).contains(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2005, 100)))
+assert((112 to 114).contains(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2005, 100)))
 // 254
-assert((252 to 256).contains(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2006, 100)))
+assert((252 to 256).contains(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2006, 100)))
 // 349
-assert((346 to 352).contains(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2007, 100)))
+assert((346 to 352).contains(M1.investment(List("GOOG", "AAPL", "BIDU"), 2000 to 2007, 100)))
 //11504
-assert((11389 to 11619).contains(CW6b.investment(List("GOOG", "AAPL", "BIDU"), 1990 to 2017, 100)))
+assert((11389 to 11619).contains(M1.investment(List("GOOG", "AAPL", "BIDU"), 1990 to 2017, 100)))