content: /*
   * 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
   *
   * 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 org.apache.ambari.server.agent.stomp;
  
  import static org.easymock.EasyMock.createNiceMock;
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertTrue;
  
  import java.util.Collections;
  import java.util.HashMap;
  import java.util.Map;
  
  import org.apache.ambari.server.agent.RecoveryConfig;
  import org.apache.ambari.server.agent.stomp.dto.HostLevelParamsCluster;
  import org.apache.ambari.server.events.HostLevelParamsUpdateEvent;
  import org.apache.ambari.server.events.publishers.AmbariEventPublisher;
  import org.junit.Test;
  
  public class HostLevelParamsHolderTest {
    private final Long HOST_ID = 1L;
  
    @Test
    public void testHandleUpdateEmptyCurrent() {
      HostLevelParamsUpdateEvent current = new HostLevelParamsUpdateEvent(HOST_ID, Collections.emptyMap());
      Map<String, HostLevelParamsCluster> clusters = new HashMap<>();
      HostLevelParamsCluster cluster = new HostLevelParamsCluster(new RecoveryConfig(null), Collections.emptyMap());
      clusters.put("1", cluster);
      HostLevelParamsUpdateEvent update = new HostLevelParamsUpdateEvent(HOST_ID, clusters);
  
      HostLevelParamsHolder levelParamsHolder = new HostLevelParamsHolder(createNiceMock(AmbariEventPublisher.class));
      HostLevelParamsUpdateEvent result = levelParamsHolder.handleUpdate(current, update);
  
      assertFalse(result == update);
      assertFalse(result == current);
      assertEquals(result, update);
    }
  
    @Test
    public void testHandleUpdateEmptyUpdate() {
      Map<String, HostLevelParamsCluster> clusters = new HashMap<>();
      HostLevelParamsCluster cluster = new HostLevelParamsCluster(new RecoveryConfig(null), Collections.emptyMap());
      clusters.put("1", cluster);
      HostLevelParamsUpdateEvent current = new HostLevelParamsUpdateEvent(HOST_ID, clusters);
      HostLevelParamsUpdateEvent update = new HostLevelParamsUpdateEvent(HOST_ID, Collections.emptyMap());
  
      HostLevelParamsHolder levelParamsHolder = new HostLevelParamsHolder(createNiceMock(AmbariEventPublisher.class));
      HostLevelParamsUpdateEvent result = levelParamsHolder.handleUpdate(current, update);
  
      assertFalse(result == update);
      assertFalse(result == current);
      assertEquals(result, null);
    }
  
    @Test
    public void testHandleUpdateNoChanges() {
      Map<String, HostLevelParamsCluster> currentClusters = new HashMap<>();
      HostLevelParamsCluster currentCluster = new HostLevelParamsCluster(new RecoveryConfig(null), Collections.emptyMap());
      currentClusters.put("1", currentCluster);
      HostLevelParamsUpdateEvent current = new HostLevelParamsUpdateEvent(HOST_ID, currentClusters);
  
      Map<String, HostLevelParamsCluster> updateClusters = new HashMap<>();
      HostLevelParamsCluster updateCluster = new HostLevelParamsCluster(new RecoveryConfig(null), Collections.emptyMap());
      updateClusters.put("1", updateCluster);
      HostLevelParamsUpdateEvent update = new HostLevelParamsUpdateEvent(HOST_ID, updateClusters);
  
      HostLevelParamsHolder levelParamsHolder = new HostLevelParamsHolder(createNiceMock(AmbariEventPublisher.class));
      HostLevelParamsUpdateEvent result = levelParamsHolder.handleUpdate(current, update);
  
      assertFalse(result == update);
      assertFalse(result == current);
      assertEquals(result, null);
    }
  
    @Test
    public void testHandleUpdateOnChanges() {
      Map<String, HostLevelParamsCluster> currentClusters = new HashMap<>();
      HostLevelParamsCluster currentCluster = new HostLevelParamsCluster(new RecoveryConfig(null), Collections.emptyMap());
      currentClusters.put("1", currentCluster);
      HostLevelParamsUpdateEvent current = new HostLevelParamsUpdateEvent(HOST_ID, currentClusters);
  
      Map<String, HostLevelParamsCluster> updateClusters = new HashMap<>();
      HostLevelParamsCluster updateCluster = new HostLevelParamsCluster(new RecoveryConfig(null), Collections.emptyMap());
      updateClusters.put("2", updateCluster);
      HostLevelParamsUpdateEvent update = new HostLevelParamsUpdateEvent(HOST_ID, updateClusters);
  
      HostLevelParamsHolder levelParamsHolder = new HostLevelParamsHolder(createNiceMock(AmbariEventPublisher.class));
      HostLevelParamsUpdateEvent result = levelParamsHolder.handleUpdate(current, update);
  
      assertFalse(result == update);
      assertFalse(result == current);
      assertEquals(2, result.getHostLevelParamsClusters().size());
      assertTrue(result.getHostLevelParamsClusters().containsKey("1"));
      assertTrue(result.getHostLevelParamsClusters().containsKey("2"));
    }
  }
  