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

This example Play Framework source code file (EssentialActionSpec.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

action, api, classloader, concurrent, essentialaction, essentialactionspec, fakeapplication, fakerequest, library, ok, play, play framework, playspecification, promise, test

The EssentialActionSpec.scala Play Framework example source code

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

import play.api.libs.json.Json
import play.api.mvc.{Action, EssentialAction}
import play.api.mvc.Results._
import play.api.test.{FakeApplication, PlaySpecification, FakeRequest}
import scala.concurrent.Promise

object EssentialActionSpec extends PlaySpecification {

  "an EssentialAction" should {
    "be tested without any started FakeApplication" in {

      val action: EssentialAction = Action { request =>
        val value = (request.body.asJson.get \ "field").as[String]
        Ok(value)
      }

      val request = FakeRequest(POST, "/").withJsonBody(Json.parse("""{ "field": "value" }"""))

      val result = call(action, request)

      status(result) mustEqual OK
      contentAsString(result) mustEqual "value"
    }


    "use the classloader of the running application" in {

      val actionClassLoader = Promise[ClassLoader]()
      val action: EssentialAction = Action {
        actionClassLoader.success(Thread.currentThread.getContextClassLoader)
        Ok("")
      }

      // start fake application with its own classloader
      val applicationClassLoader = new ClassLoader(){}
      val fakeApplication = FakeApplication(classloader = applicationClassLoader)

      running(fakeApplication) {
        // run the test with the classloader of the current thread
        Thread.currentThread.getContextClassLoader must not be applicationClassLoader
        call(action, FakeRequest())
        await(actionClassLoader.future) must be equalTo applicationClassLoader
      }
    }
  }

}