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

This example Play Framework source code file (HttpExecutionContextSpec.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

api, classloader, concurrent, core, executionspecification, httpexecutioncontext, httpexecutioncontextspec, library, linkedblockingqueue, play, play framework, runnable, seconds, specification

The HttpExecutionContextSpec.scala Play Framework example source code

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

import java.util.concurrent.LinkedBlockingQueue
import java.util.concurrent.TimeUnit.SECONDS
import org.specs2.mutable.Specification
import play.api.libs.iteratee.ExecutionSpecification
import play.mvc.Http
import scala.collection.JavaConverters._
import scala.concurrent.ExecutionContext

object HttpExecutionContextSpec extends Specification
  with ExecutionSpecification {

  "HttpExecutionContext" should {

    "propagate the context ClassLoader and Http.Context" in {
      mustExecute(2) { ec =>
        val pec = ec.prepare()
        val classLoader = new ClassLoader() {}
        val httpContext = new Http.Context(1, null, null, Map.empty.asJava, Map.empty.asJava, Map.empty.asJava)
        val hec = new HttpExecutionContext(classLoader, httpContext, pec)

        val hecFromThread = new LinkedBlockingQueue[ExecutionContext]()
        hec.execute(new Runnable {
          def run() = {
            hecFromThread.offer(HttpExecutionContext.fromThread(pec))
          }
        })

        val actualClassLoader = new LinkedBlockingQueue[ClassLoader]()
        val actualHttpContext = new LinkedBlockingQueue[Http.Context]()
        hecFromThread.poll(5, SECONDS).execute(new Runnable {
          def run() = {
            actualClassLoader.offer(Thread.currentThread().getContextClassLoader())
            actualHttpContext.offer(Http.Context.current.get())
          }
        })
        actualClassLoader.poll(5, SECONDS) must equalTo(classLoader)
        actualHttpContext.poll(5, SECONDS) must equalTo(httpContext)
      }
    }

  }

}