ActorTestKit的关闭方法无法正常工作

Question

我进行了以下测试：

final class DetectorSpec extends BddSpec {

  private val sap = Container.sap()
  private val kafka = Container.kafka()

  sap.start()
  kafka.start()


  override def afterAll(): Unit = {
    sap.stop()
    kafka.stop()
  }

  private def withKafkaAndSapOnline(testCode: TestProbe[ServerEvent] => Unit)
  : Unit = {

    val config = ConfigFactory.parseString(
      s"""akka.actor.default-dispatcher = {
            type = akka.testkit.CallingThreadDispatcherConfigurator
          }
          akka.actor.testkit.typed.single-expect-default = 0s
          akka.loglevel = DEBUG
          kafka {
           servers = "${kafka.getBootstrapServers}"
           zookeeper = "${kafka.getMappedPort(2181)}"
         }
         sap {
           server = "ws://${sap.getContainerIpAddress}:${sap.getMappedPort(8080)}"
         }""")

    val testKit = ActorTestKit("DetectorSystem1", config)
    testKit.spawn(DetectorSupervisor.create(), "DetectorSupervisor")
    val inbox = testKit.createTestProbe[ServerEvent]("Receiver")
    testKit.system.receptionist ! Receptionist.Register(ServerStateKey, inbox.ref)
    testCode(inbox)
    testKit.shutdownTestKit()

  }


  private def withKafkaAndSapOffline(testCode: (TestProbe[ServerEvent], TestProbe[ServerEvent]) => Unit)
  : Unit = {

    val config = ConfigFactory.parseString(
      s"""akka.actor.default-dispatcher = {
            type = akka.testkit.CallingThreadDispatcherConfigurator
          }
          akka.actor.testkit.typed.single-expect-default = 0s
          akka.loglevel = DEBUG
          kafka {
            servers = "PLAINTEXT://localhost:9092"
            zookeeper = "2181"
          }
          sap {
            server = "ws://127.0.0.1"
          }""")

    val testKit = ActorTestKit("DetectorSystem2", config)
    testKit.spawn(DetectorSupervisor.create(), "DetectorSupervisor")
    val inbox1 = testKit.createTestProbe[ServerEvent]("Receiver1")
    val inbox2 = testKit.createTestProbe[ServerEvent]("Receiver2")
    testKit.system.receptionist ! Receptionist.Register(ServerStateKey, inbox1.ref)
    testKit.system.receptionist ! Receptionist.Register(ServerStateKey, inbox2.ref)

    testCode(inbox1, inbox2)
    testKit.shutdownTestKit()
  }

  private def withKafkaOfflineSapOnline(testCode: TestProbe[ServerEvent] => Unit)
  : Unit = {

    val config = ConfigFactory.parseString(
      s"""akka.actor.default-dispatcher = {
            type = akka.testkit.CallingThreadDispatcherConfigurator
          }
          akka.actor.testkit.typed.single-expect-default = 0s
          akka.loglevel = DEBUG
          kafka {
            servers = "PLAINTEXT://localhost:9092"
            zookeeper = "2181"
          }
          sap {
            server = "ws://${sap.getContainerIpAddress}:${sap.getMappedPort(8080)}"
          }""")

    val testKit = ActorTestKit("DetectorSystem3", config)
    val inbox = testKit.createTestProbe[ServerEvent]("Receiver")
    testKit.spawn(DetectorSupervisor.create(), "DetectorSupervisor")
    testKit.system.receptionist ! Receptionist.Register(ServerStateKey, inbox.ref)

    testCode(inbox)
    testKit.shutdownTestKit()
  }

  private def withKafkaOnlineSapOffline(testCode: TestProbe[ServerEvent] => Unit)
  : Unit = {

    val config = ConfigFactory.parseString(
      s"""akka.actor.default-dispatcher = {
            type = akka.testkit.CallingThreadDispatcherConfigurator
          }
          akka.actor.testkit.typed.single-expect-default = 0s
          akka.loglevel = DEBUG
          kafka {
            servers = "${kafka.getBootstrapServers}"
            zookeeper = "${kafka.getMappedPort(2181)}"
          }
          sap {
            server = "ws://127.0.0.1:8080"
          }""")

    val testKit = ActorTestKit("DetectorSystem4", config)
    testKit.spawn(DetectorSupervisor.create(), "DetectorSupervisor")
    val inbox = testKit.createTestProbe[ServerEvent]("Receiver")
    testKit.system.receptionist ! Receptionist.Register(ServerStateKey, inbox.ref)

    testCode(inbox)
    testKit.shutdownTestKit()

  }


  feature("Detect Kafka and SAP availability") {
    info("As a technical user, I want to be notified in real time, if Kafka and SAP is up and running or not.")
    scenario("SAP and Kafka are available") {
      withKafkaAndSapOnline { inbox =>
        Given("I am waiting for the current state message")
        When("I am receive the state message")
        Then("it should contain `SAP and Kafka are online`")
        inbox.fishForMessage(5.second){
          case ServerOfflineApproved =>
            FishingOutcomes.continue
          case ServerOnlineApproved =>
            FishingOutcomes.complete
          case _ =>
            FishingOutcomes.fail("Unexpected message")
        }
      }
    }

    scenario("SAP is online and Kafka is offline") {
      withKafkaOfflineSapOnline { inbox =>
        Given("I am waiting for the current state message")
        When("I am receive the state message")
        Then("it should contain `Kafka is offline`")
        inbox.fishForMessage(5.second){
          case ServerOfflineApproved =>
            FishingOutcomes.complete
          case _ =>
            FishingOutcomes.fail("Unexpected message")
        }
      }
    }

    scenario("SAP is offline and Kafka is online") {
      withKafkaOnlineSapOffline { inbox =>
        Given("I am waiting for the current state message")
        When("I am receive the state message")
        Then("it should contain `SAP is offline`")
        inbox.fishForMessage(5.second){
          case ServerOfflineApproved =>
            FishingOutcomes.complete
          case _ =>
            FishingOutcomes.fail("Unexpected message")
        }
      }
    }

    scenario("SAP and Kafka are offline") {
      withKafkaAndSapOffline { (inbox1, inbox2) =>
        Given("I am registering two listeners")
        When("I am receive the state message")
        Then("it should contain `Kafka and SAP are offline`")
        inbox1.fishForMessage(5.second){
          case ServerOfflineApproved =>
            FishingOutcomes.complete
          case _ =>
            FishingOutcomes.fail("Unexpected message")
        }
        inbox2.fishForMessage(5.second){
          case ServerOfflineApproved =>
            FishingOutcomes.complete
          case _ =>
            FishingOutcomes.fail("Unexpected message")
        }
      }
    }
  }
}

每次测试后都可以看到，它将关闭ActorTestKit。但是有时会冻结，这意味着我收到以下消息：

[DEBUG] [07/19/2019 20:37:57.788] [DetectorSystem3-akka.actor.default-blocking-io-dispatcher-11] [akka://DetectorSystem3/system/IO-TCP/selectors/$a/0] Attempting connection to [localhost/127.0.0.1:32846]
[DEBUG] [07/19/2019 20:37:57.789] [DetectorSystem3-akka.io.pinned-dispatcher-2] [akka://DetectorSystem3/system/IO-TCP/selectors/$a/0] Connection established to [localhost:32846]
[INFO] [07/19/2019 20:37:58.807] [ScalaTest-run-running-DetectorSpec] [akka://DetectorSystem3/user/DetectorSupervisor/KafkaActor/KafkaStreamer] !!!!!!!!!!!!!!!!!!!!! Shutdown KafkaDetectorActor !!!!!!!!!!!!!!!!!!!!!
[INFO] [07/19/2019 20:37:58.810] [ScalaTest-run-running-DetectorSpec] [akka://DetectorSystem3/user/DetectorSupervisor/SapActor/SapStreamer] !!!!!!!!!!!!!!!!!!!!! Shutdown SapDetectorActor !!!!!!!!!!!!!!!!!!!!! 

，ActorTestKit永远不会关闭。

以下是证据：

它正在运行…… 如何停止？