Scala example source code file (NeedTestJVM.scala)

This example Scala source code file (NeedTestJVM.scala) is included in the alvinalexander.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Scala by Example" ^TM.

Learn more about this Scala project at its project page.

Java - Scala tags/keywords

function0, need, needtestjvm, speclite

The NeedTestJVM.scala Scala example source code

package scalaz

object NeedTestJVM extends SpecLite {

  "Need" should {
    "clear the Function0 reference" in {
      @volatile var flag = false
      val method = Need.getClass.getMethod("apply", classOf[Function0[_]])
      val need = method.invoke(
        Need,
        new runtime.AbstractFunction0[String]{
          override def finalize = {flag = true}
          override def apply = ""
        }
      ).asInstanceOf[Need[String]]

      flag must_== false
      print(need.value)
      System.gc()
      System.runFinalization()
      flag must_== true
    }
  }

}