code: /*
   * Copyright © 2014-2017 EntIT Software LLC, a Micro Focus company (L.P.)
   *
   * Licensed 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
   *
   * Unless required by applicable law or agreed to in writing, software
   * distributed under the License is distributed on an "AS IS" BASIS,
   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   * See the License for the specific language governing permissions and
   * limitations under the License.
   */
  
  package io.cloudslang.engine.queue.services;
  
  import io.cloudslang.engine.queue.entities.ExecStatus;
  import io.cloudslang.engine.queue.entities.ExecutionMessage;
  import junit.framework.Assert;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.InjectMocks;
  import org.mockito.Mock;
  import org.mockito.MockitoAnnotations;
  import org.springframework.context.annotation.Configuration;
  import org.springframework.test.context.ContextConfiguration;
  import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
  
  import java.util.ArrayList;
  import java.util.Date;
  import java.util.List;
  
  import static org.mockito.Matchers.anyList;
  import static org.mockito.Mockito.*;
  
  /**
   * User: wahnonm
   * Date: 07/08/13
   * Time: 16:21
   */
  @RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration
  public class QueueDispatcherServiceTest {
  
      private static final int WORKER_FREE_MEMORY = 200000000; //bytes
  
      @Mock
      private ExecutionQueueService executionQueueService;
  
      @Mock
      private BusyWorkersService busyWorkersService;
  
      @InjectMocks
      private QueueDispatcherService queueDispatcherService = new QueueDispatcherServiceImpl();
  
      @Configuration
      static class EmptyConfig {}
  
      @Before
      public void setUp() {
          MockitoAnnotations.initMocks(this);
      }
  
      @Test
      public void testDispatchEmptyValues() throws Exception {
          List<ExecutionMessage> msg = new ArrayList<>();
          queueDispatcherService.dispatch(msg);
          verify(executionQueueService,never()).enqueue(anyList());
  
          queueDispatcherService.dispatch(null);
          verify(executionQueueService,never()).enqueue(anyList());
      }
  
      @Test
      public void testDispatch() throws Exception {
          List<ExecutionMessage> msg = new ArrayList<>();
          msg.add(new ExecutionMessage());
  
          queueDispatcherService.dispatch(msg);
          verify(executionQueueService,times(1)).enqueue(anyList());
      }
  
      @Test
      public void testPoll() throws Exception {
          Date now = new Date();
          when(busyWorkersService.isWorkerBusy("workerId")).thenReturn(true);
          queueDispatcherService.poll("workerId",5, WORKER_FREE_MEMORY);
          verify(executionQueueService,times(1)).poll("workerId", 5, WORKER_FREE_MEMORY, ExecStatus.ASSIGNED);
      }
  
      @Test
      public void testPollEmptyResult() throws Exception {
          Date now = new Date();
          List<ExecutionMessage> msg = new ArrayList<>();
  
          when(executionQueueService.poll("workerId", 5, WORKER_FREE_MEMORY, ExecStatus.ASSIGNED)).thenReturn(msg);
          List<ExecutionMessage> result = queueDispatcherService.poll("workerId",5, WORKER_FREE_MEMORY);
          Assert.assertTrue(result.isEmpty());
      }
  
      @Test
      public void testPollWithResult() throws Exception {
          Date now = new Date();
          List<ExecutionMessage> msg = new ArrayList<>();
  
          msg.add(new ExecutionMessage());
          msg.get(0).setMsgId("id1");
  
          msg.add(new ExecutionMessage());
          msg.get(1).setMsgId("id2");
  
          when(executionQueueService.poll("workerId", 5, WORKER_FREE_MEMORY, ExecStatus.ASSIGNED)).thenReturn(msg);
          List<ExecutionMessage> result = queueDispatcherService.poll("workerId",5, WORKER_FREE_MEMORY);
          Assert.assertEquals(2,result.size());
          Assert.assertEquals("id1",result.get(0).getMsgId());
          Assert.assertEquals("id2",result.get(1).getMsgId());
      }
  }
  