//println("starting test now")

/*
import scala.concurrent._
import scala.concurrent.duration._
import ExecutionContext.Implicits.global
import scala.language.postfixOps 

val urban_prices = List(List(Some(71.539941), None), 
                        List(Some(76.974614), None), 
                        List(Some(65.226685), Some(6.35)), 
                        List(Some(78.354649), Some(12.241)), 
                        List(Some(85.517645), Some(38.188)))

val urban_deltas = List(List(Some(0.07596697626574789), None), 
                        List(Some(-0.152620823795232), None), 
                        List(Some(0.20126676681483952), Some(0.9277165354330709)), 
                        List(Some(0.09141762603007778), Some(2.119679764725104)))


lazy val f = Future {
  //assert(get_deltas(urban_prices) == urban_deltas)
  assert (get_deltas(get_prices(List("IBM", "BIDU"), 2004 to 2008)) == urban_deltas)
}


Await.result(f, 180 second)

*/

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.get_deltas(urban_prices) == List(List(Some(-0.03573992567129673), Some(0.5399749442411563)), 
                                             List(Some(0.10103412653643493), Some(0.2477771728154912))))