1 

     2 /*

     3 assert(CW6c.get_prices(List("BIDU"), 2004 to 2008) == List(List(None), List(None), 

     4                                                       List(Some(6.35)), List(Some(12.241)), 

     5                                                       List(Some(38.188))))

     6 

     7 */

     8 assert(CW6c.get_prices(List("GOOG", "AAPL"), 2010 to 2012) ==

     9     List(List(Some(311.349976), Some(27.505054)), 

    10          List(Some(300.222351), Some(42.357094)), 

    11          List(Some(330.555054), Some(52.852215))))

    12 

    13 

    14