Some more test cleanup to not create so many threads. See #3320

akka-docs/rst/java/code/docs/actor/mailbox/DurableMailboxDocTest.java

@@ -0,0 +1,44 @@
+/**
+ * Copyright (C) 2009-2013 Typesafe Inc. <http://www.typesafe.com>
+ */
+package docs.actor.mailbox;
+
+//#imports
+import akka.actor.Props;
+import akka.actor.ActorRef;
+
+//#imports
+
+import akka.testkit.AkkaJUnitActorSystemResource;
+import org.junit.ClassRule;
+import org.junit.Test;
+
+import akka.testkit.AkkaSpec;
+import com.typesafe.config.ConfigFactory;
+import akka.actor.ActorSystem;
+import akka.actor.UntypedActor;
+
+public class DurableMailboxDocTest {
+
+  @ClassRule
+  public static AkkaJUnitActorSystemResource actorSystemResource =
+    new AkkaJUnitActorSystemResource("DurableMailboxDocTest",
+      ConfigFactory.parseString(DurableMailboxDocSpec.config()).withFallback(AkkaSpec.testConf()));
+
+  private final ActorSystem system = actorSystemResource.getSystem();
+
+  @Test
+  public void configDefinedDispatcher() {
+    //#dispatcher-config-use
+    ActorRef myActor = system.actorOf(Props.create(MyUntypedActor.class).
+        withDispatcher("my-dispatcher"), "myactor");
+    //#dispatcher-config-use
+    myActor.tell("test", null);
+  }
+
+  public static class MyUntypedActor extends UntypedActor {
+    public void onReceive(Object message) {
+    }
+  }
+
+}