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.recovery;
  
  import io.cloudslang.score.api.nodes.WorkerStatus;
  import io.cloudslang.engine.node.entities.WorkerNode;
  import io.cloudslang.engine.node.services.WorkerLockService;
  import io.cloudslang.engine.node.services.WorkerNodeService;
  import io.cloudslang.engine.queue.services.ExecutionQueueService;
  import io.cloudslang.engine.versioning.services.VersionService;
  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.Collections;
  import java.util.List;
  
  import static org.mockito.Mockito.anyInt;
  import static org.mockito.Mockito.anyLong;
  import static org.mockito.Mockito.anyString;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.never;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  /**
   * Created with IntelliJ IDEA.
   * User: kravtsov
   * Date: 8/6/14
   * Time: 10:21 AM
   */
  @RunWith(SpringJUnit4ClassRunner.class)
  @ContextConfiguration
  public class WorkerRecoveryServiceTest {
  
      @InjectMocks
      private WorkerRecoveryService workerRecoveryService = new WorkerRecoveryServiceImpl();
  
      @Mock
      private WorkerNodeService workerNodeService;
  
      @Mock
      private WorkerLockService workerLockService;
  
      @Mock
      private VersionService versionService;
  
      @Mock
      private ExecutionQueueService executionQueueService;
  
      @Mock
      private MessageRecoveryService messageRecoveryService;
  
      @Before
      public void setUp() {
          MockitoAnnotations.initMocks(this);
          when(versionService.getCurrentVersion(VersionService.MSG_RECOVERY_VERSION_COUNTER_NAME)).thenReturn(0L);
      }
  
      @Test
      //Test the situation when the worker is responsive and has no not acked messages
      public void testDoWorkerAndMessageRecoveryResponsiveAndNoMessages() throws Exception {
          when(workerNodeService.readNonRespondingWorkers()).thenReturn(Collections.<String>emptyList());
          when(executionQueueService.countMessagesWithoutAckForWorker(anyInt(), anyLong(), anyString())).thenReturn(0);
          WorkerNode mockWorker = mock(WorkerNode.class);
          when(mockWorker.getStatus()).thenReturn(WorkerStatus.RUNNING);
          when(workerNodeService.findByUuid("123")).thenReturn(mockWorker);
          workerRecoveryService.doWorkerAndMessageRecovery("123");
  
          //Make sure the methods did not run
          verify(workerNodeService, never()).updateStatusInSeparateTransaction("123", WorkerStatus.IN_RECOVERY);
      }
  
      @Test
      //Test the situation when the worker is non responsive and has no not acked messages
      public void testDoWorkerAndMessageRecoveryNonResponsive() throws Exception {
          when(workerNodeService.readNonRespondingWorkers()).thenReturn(getNonResponsiveWorkers());
          when(executionQueueService.countMessagesWithoutAckForWorker(anyInt(), anyLong(), anyString())).thenReturn(0);
          WorkerNode mockWorker = mock(WorkerNode.class);
          when(mockWorker.getStatus()).thenReturn(WorkerStatus.RUNNING);
          when(workerNodeService.findByUuid("123")).thenReturn(mockWorker);
          workerRecoveryService.doWorkerAndMessageRecovery("123");
          //Make sure the methods did run
          verify(workerNodeService, times(1)).updateStatusInSeparateTransaction("123", WorkerStatus.IN_RECOVERY);
      }
  
      @Test
      //Test the situation when the worker is responsive and has not acked messages
      public void testDoWorkerAndMessageRecoveryResponsiveAndHasMessages() throws Exception {
          when(workerNodeService.readNonRespondingWorkers()).thenReturn(Collections.<String>emptyList());
          when(executionQueueService.countMessagesWithoutAckForWorker(anyInt(), anyLong(), anyString())).thenReturn(10);
          WorkerNode mockWorker = mock(WorkerNode.class);
          when(mockWorker.getStatus()).thenReturn(WorkerStatus.RUNNING);
          when(workerNodeService.findByUuid("123")).thenReturn(mockWorker);
          workerRecoveryService.doWorkerAndMessageRecovery("123");
  
          //Make sure the methods did run
          verify(workerNodeService, times(1)).updateStatusInSeparateTransaction("123", WorkerStatus.IN_RECOVERY);
      }
  
      @Test
      //Test the situation when the worker is responsive, in recovery and has no not acked messages
      public void testDoWorkerAndMessageRecoveryResponsiveInRecoveryAndHasMessages() throws Exception {
          when(workerNodeService.readNonRespondingWorkers()).thenReturn(Collections.<String>emptyList());
          when(executionQueueService.countMessagesWithoutAckForWorker(anyInt(), anyLong(), anyString())).thenReturn(0);
          WorkerNode mockWorker = mock(WorkerNode.class);
          when(mockWorker.getStatus()).thenReturn(WorkerStatus.IN_RECOVERY);
          when(workerNodeService.findByUuid("123")).thenReturn(mockWorker);
          workerRecoveryService.doWorkerAndMessageRecovery("123");
  
          //Make sure the methods did run
          verify(workerNodeService, times(1)).updateStatusInSeparateTransaction("123", WorkerStatus.IN_RECOVERY);
      }
  
      @Test
      //Test the situation when the worker is non responsive and has not acked messages
      public void testDoWorkerAndMessageRecoveryNonResponsiveAndHasMessages() throws Exception {
          when(workerNodeService.readNonRespondingWorkers()).thenReturn(getNonResponsiveWorkers());
          when(executionQueueService.countMessagesWithoutAckForWorker(anyInt(), anyLong(), anyString())).thenReturn(200);
          WorkerNode mockWorker = mock(WorkerNode.class);
          when(mockWorker.getStatus()).thenReturn(WorkerStatus.IN_RECOVERY);
          when(workerNodeService.findByUuid("123")).thenReturn(mockWorker);
          workerRecoveryService.doWorkerAndMessageRecovery("123");
          //Make sure the methods did run
          verify(workerNodeService, times(1)).updateStatusInSeparateTransaction("123", WorkerStatus.IN_RECOVERY);
      }
  
      @Test
      public void testDoWorkerRecovery() throws Exception {
          workerRecoveryService.doWorkerRecovery("worker1");
  
          verify(workerLockService, times(1)).lock("worker1");
          verify(workerNodeService, times(1)).updateStatusInSeparateTransaction("worker1", WorkerStatus.IN_RECOVERY);
          verify(workerNodeService, times(1)).updateStatus("worker1", WorkerStatus.RECOVERED);
      }
  
      private List<String> getNonResponsiveWorkers() {
          List<String> workers = new ArrayList<>();
          workers.add("123");
          return workers;
      }
  
      @Configuration
      static class EmptyConfig {
      }
  }
  