Play Framework/Scala example source code file (ThreadsSpec.scala)

This example Play Framework source code file (ThreadsSpec.scala) is included in my "Source Code Warehouse" project. The intent of this project is to help you more easily find Play Framework (and Scala) source code examples by using tags.

All credit for the original source code belongs to Play Framework; I'm just trying to make examples easier to find. (For my Scala work, see my Scala examples and tutorials.)

Play Framework tags/keywords

classloader, core, play, play framework, runtimeexception, specification, threads, threadsspec, uh, util, utility, utils

The ThreadsSpec.scala Play Framework example source code

/*
 * Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
 */
package play.core.utils

import util.control.Exception._
import org.specs2.mutable.Specification
import play.utils.Threads

object ThreadsSpec extends Specification {
  "Threads" should {
    "restore the correct class loader" in {
      "if the block returns successfully" in {
        val currentCl = Thread.currentThread.getContextClassLoader
        Threads.withContextClassLoader(testClassLoader) {
          Thread.currentThread.getContextClassLoader must be equalTo testClassLoader
          "a string"
        } must be equalTo "a string"
        Thread.currentThread.getContextClassLoader must be equalTo currentCl
      }

      "if the block throws an exception" in {
        val currentCl = Thread.currentThread.getContextClassLoader
        (catching(classOf[RuntimeException]) opt Threads.withContextClassLoader(testClassLoader) {
          Thread.currentThread.getContextClassLoader must be equalTo testClassLoader
          throw new RuntimeException("Uh oh")
        }) must beNone
        Thread.currentThread.getContextClassLoader must be equalTo currentCl
      }
    }
  }
  val testClassLoader = new ClassLoader(){}
}