kernel/src/test/scala/org/apache/toree/kernel/protocol/v5/kernel/socket/HeartbeatSpec.scala

/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
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 *  distributed under the License is distributed on an "AS IS" BASIS,
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 *  See the License for the specific language governing permissions and
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package org.apache.toree.kernel.protocol.v5.kernel.socket

import akka.actor.{ActorRef, ActorSystem, Props}
import akka.testkit.{ImplicitSender, TestKit, TestProbe}
import akka.util.ByteString
import org.apache.toree.communication.ZMQMessage
import com.typesafe.config.ConfigFactory
import org.mockito.ArgumentMatchers._
import org.mockito.Mockito._
import org.scalatestplus.mockito.MockitoSugar
import org.scalatest.funspec.AnyFunSpecLike
import org.scalatest.matchers.should.Matchers
import test.utils.MaxAkkaTestTimeout

object HeartbeatSpec {
  val config = """
    akka {
      loglevel = "WARNING"
    }"""
}

class HeartbeatSpec extends TestKit(
  ActorSystem(
    "HeartbeatActorSpec",
    ConfigFactory.parseString(HeartbeatSpec.config),
    org.apache.toree.Main.getClass.getClassLoader
  ))
with ImplicitSender with AnyFunSpecLike with Matchers with MockitoSugar {
  val SomeMessage: String = "some message"
  val SomeZMQMessage: ZMQMessage = ZMQMessage(ByteString(SomeMessage.getBytes))

  describe("HeartbeatActor") {
    val socketFactory = mock[SocketFactory]
    val probe : TestProbe = TestProbe()
    when(socketFactory.Heartbeat(any(classOf[ActorSystem]), any(classOf[ActorRef]))).thenReturn(probe.ref)

    val heartbeat = system.actorOf(Props(classOf[Heartbeat], socketFactory))

    describe("send heartbeat") {
      it("should receive and send same ZMQMessage") {
        heartbeat ! SomeZMQMessage
        probe.expectMsg(MaxAkkaTestTimeout, SomeZMQMessage)
      }
    }
  }
}