1 import scala.concurrent._

     2 import scala.concurrent.duration._

     3 import ExecutionContext.Implicits.global

     4 import scala.language.postfixOps 

     5 

     6 

     7 

     8 lazy val f = Future {

     9   assert(fixpT((x:Int) => if (200000 < x) x else x + 1, 0) == 200001)

    10   assert(fixpT((x:Long) => if (20 < x) x else x + 1, 0L) == 21L)

    11 }

    12 

    13 Await.result(f, 120 second)