testing partial function composition

partialfunctioncomp.scala

#!/bin/sh
exec scala "$0" "$@"
!#

class P {
  def receive: PartialFunction[String, Any] = {
    case _ => "Default"
  }
}

trait Partial2 extends P {
  private def p2Receive: PartialFunction[String, Any] = {
    case "1" => "1"
  }
  abstract override def receive = p2Receive orElse super.receive
}

object Main {

  def main(args: Array[String]) {
    val p = new P with Partial2
    println(p.receive("1"))
    println(p.receive("2"))
    assert(p.receive("1") == "1")
    assert(p.receive("2") == "Default")
  }

}

Main.main(args)