Examples of akka.testkit.JavaTestKit

akka.testkit.JavaTestKit
Java API: Test kit for testing actors. Inheriting from this class enables reception of replies from actors, which are queued by an internal actor and can be examined using the expectMsg... methods. Assertions and bounds concerning timing are available in the form of Within blocks.
Beware of two points:
- the ActorSystem passed into the constructor needs to be shutdown, otherwise thread pools and memory will be leaked - this trait is not thread-safe (only one actor with one queue, one stack of Within blocks); take care not to run tests within a single test class instance in parallel.
- It should be noted that for CI servers and the like all maximum Durations are scaled using the dilated method, which uses the TestKitExtension.Settings.TestTimeFactor settable via akka.conf entry "akka.test.timefactor".

    }};
  }


  @Test
  public void TheArithmeticServiceShouldCalculateMultiplicationAndDivisionProperly(){
    new JavaTestKit(system) {{
      final ActorRef service =
        system.actorOf(Props.create(ArithmeticService.class));
      final ActorRef probe = getRef();
      IntStream.range(-2, 3).forEach(x ->
        IntStream.range(-2, 3).forEach(y -> {

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    }};
  }


  @Test
  public void TheArithmeticServiceShouldSurviveIllegalExpressions(){
    new JavaTestKit(system) {{
      final ActorRef service =
        system.actorOf(Props.create(ArithmeticService.class));
      final ActorRef probe = getRef();


      service.tell(new Divide(new Const(1), new Const(0)), probe);

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    final ActorSystem system = ActorSystem.create("MySystem");
    final ActorRef myActor = system.actorOf(Props.create(MyUntypedActor.class),
      "myactor");
    //#system-actorOf
    try {
      new JavaTestKit(system) {
        {
          myActor.tell("hello", getRef());
          expectMsgEquals("hello");
        }
      };

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  private final ActorSystem system = actorSystemResource.getSystem();


  @Test
  public void shouldHandleExceptionThrownByActorAndGenerateCustomResponse() throws Exception {
    new JavaTestKit(system) {{
      String result = new EventFilter<String>(Exception.class) {
        protected String run() {
          FiniteDuration duration = Duration.create(1, TimeUnit.SECONDS);
          Timeout timeout = new Timeout(duration);
          Camel camel = CamelExtension.get(system);

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  private final ActorSystem system = actorSystemResource.getSystem();
  
  @Test
  public void demonstrateLookupClassification() {
    new JavaTestKit(system) {{
      //#lookup-bus-test
      LookupBusImpl lookupBus = new LookupBusImpl();
      lookupBus.subscribe(getTestActor(), "greetings");
      lookupBus.publish(new MsgEnvelope("time", System.currentTimeMillis()));
      lookupBus.publish(new MsgEnvelope("greetings", "hello"));

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    }};
  }
  
  @Test
  public void demonstrateSubchannelClassification() {
    new JavaTestKit(system) {{
      //#subchannel-bus-test
      SubchannelBusImpl subchannelBus = new SubchannelBusImpl();
      subchannelBus.subscribe(getTestActor(), "abc");
      subchannelBus.publish(new MsgEnvelope("xyzabc", "x"));
      subchannelBus.publish(new MsgEnvelope("bcdef", "b"));

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    }};
  }
  
  @Test
  public void demonstrateScanningClassification() {
    new JavaTestKit(system) {{
      //#scanning-bus-test
      ScanningBusImpl scanningBus = new ScanningBusImpl();
      scanningBus.subscribe(getTestActor(), 3);
      scanningBus.publish("xyzabc");
      scanningBus.publish("ab");

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  }
  
  @Test
  public void demonstrateActorClassification() {
      //#actor-bus-test
      ActorRef observer1 = new JavaTestKit(system).getRef();
      ActorRef observer2 = new JavaTestKit(system).getRef();
      JavaTestKit probe1 = new JavaTestKit(system);
      JavaTestKit probe2 = new JavaTestKit(system);
      ActorRef subscriber1 = probe1.getRef();
      ActorRef subscriber2 = probe2.getRef();
      ActorBusImpl actorBus = new ActorBusImpl(system);
      actorBus.subscribe(subscriber1, observer1);
      actorBus.subscribe(subscriber2, observer1);
      actorBus.subscribe(subscriber2, observer2);
      Notification n1 = new Notification(observer1, 100);
      actorBus.publish(n1);
      probe1.expectMsgEquals(n1);
      probe2.expectMsgEquals(n1);
      Notification n2 = new Notification(observer2, 101);
      actorBus.publish(n2);
      probe2.expectMsgEquals(n2);
      probe1.expectNoMsg(FiniteDuration.create(500, TimeUnit.MILLISECONDS));
      //#actor-bus-test
  }

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        system = ActorSystem.create("JavaUdpMulticastTest");
    }


    @Test
    public void testUdpMulticast() throws Exception {
        new JavaTestKit(system) {{
            NetworkInterface ipv6Iface = null;
            for (Enumeration<NetworkInterface> interfaces = NetworkInterface.getNetworkInterfaces(); interfaces.hasMoreElements() && ipv6Iface == null;) {
                NetworkInterface interf = interfaces.nextElement();
                for (Enumeration<InetAddress> addresses = interf.getInetAddresses(); addresses.hasMoreElements() && ipv6Iface == null;) {
                    InetAddress address = addresses.nextElement();

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