client/src/test/scala/org/apache/toree/kernel/protocol/v5/client/SparkKernelClientSpec.scala

/*
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 *  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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 *  See the License for the specific language governing permissions and
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package org.apache.toree.kernel.protocol.v5.client

import org.apache.pekko.actor.ActorSystem
import org.apache.pekko.testkit.{TestKit, TestProbe}
import org.apache.toree.comm.{CommCallbacks, CommStorage, CommRegistrar}
import org.apache.toree.kernel.protocol.v5
import org.apache.toree.kernel.protocol.v5._
import org.apache.toree.kernel.protocol.v5.client.execution.ExecuteRequestTuple
import scala.concurrent.duration._
import org.mockito.Mockito._
import org.mockito.ArgumentMatchers.{eq => mockEq, _}
import org.scalatestplus.mockito.MockitoSugar
import org.scalatest.funspec.AnyFunSpecLike
import org.scalatest.matchers.should.Matchers
import org.scalatest.BeforeAndAfterEach

class SparkKernelClientSpec
  extends TestKit(ActorSystem("SparkKernelClientActorSystem"))
  with Matchers with MockitoSugar with AnyFunSpecLike with BeforeAndAfterEach
{
  private val TestTargetName = "some target"

  private var mockActorLoader: ActorLoader = _
  private var mockCommRegistrar: CommRegistrar = _
  private var sparkKernelClient: SparkKernelClient = _
  private var executeRequestProbe: TestProbe = _
  private var shellClientProbe: TestProbe = _

  override def beforeEach(): Unit = {
    mockActorLoader = mock[ActorLoader]
    mockCommRegistrar = mock[CommRegistrar]

    executeRequestProbe = TestProbe()
    when(mockActorLoader.load(MessageType.Incoming.ExecuteRequest))
      .thenReturn(system.actorSelection(executeRequestProbe.ref.path.toString))

    shellClientProbe = TestProbe()
    when(mockActorLoader.load(SocketType.ShellClient))
      .thenReturn(system.actorSelection(shellClientProbe.ref.path.toString))

    sparkKernelClient = new SparkKernelClient(
      mockActorLoader, system, mockCommRegistrar)
  }

  describe("SparkKernelClient") {
    describe("#execute") {
      it("should send an ExecuteRequest message") {
        val func = (x: Any) => println(x)
        sparkKernelClient.execute("val foo = 2")
        executeRequestProbe.expectMsgClass(classOf[ExecuteRequestTuple])
      }
    }
  }
}