Using specific config settings with TestKit - example 1

gistfile1.scala

import akka.testkit.{TestActorRef, TestKit}
import com.typesafe.config.ConfigFactory
import org.scalatest.matchers.MustMatchers
import org.scalatest.WordSpec
import akka.actor.{Actor, ActorSystem}

@org.junit.runner.RunWith(classOf[org.scalatest.junit.JUnitRunner])
class Example1 extends TestKit(
    ActorSystem("TestSystem", ConfigFactory.parseString("""{ test.value = "Hey, it works!" }""")))
    with WordSpec
    with MustMatchers {

  "TestKit" must {
    "allow for specific values in actor systems" in {
      val theActor = TestActorRef[TestActor].underlyingActor
      theActor.retrieveValue must equal("Hey, it works!")
    }
  }
}

class TestActor extends Actor {
  def receive = {
    case _ => println("Status: " + retrieveValue)
  }

  def retrieveValue: String = {
    context.system.settings.config.getString("test.value")
  }
}