1 

     2 import scala.concurrent._

     3 import scala.concurrent.duration._

     4 import ExecutionContext.Implicits.global

     5 import scala.language.postfixOps 

     6 

     7 

     8 

     9 lazy val f = Future {

    10   assert(replace("aa".% | "bb", "aabbbaaaaaaabaaaaabbaaaabb" , "c") == "ccbcabcaccc")

    11   assert(replace("aa".% | "bb", "abba" , "") == "aa")

    12 }

    13 

    14 Await.result(f, 120 second)