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.cloudstack.api.command.admin.cluster;
  
  import static org.mockito.ArgumentMatchers.anyLong;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import java.util.Arrays;
  import java.util.Collections;
  import java.util.List;
  
  import org.apache.cloudstack.api.response.ClusterResponse;
  import org.apache.cloudstack.extension.Extension;
  import org.apache.cloudstack.extension.ExtensionHelper;
  import org.junit.Before;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.mockito.junit.MockitoJUnitRunner;
  
  import com.cloud.hypervisor.Hypervisor;
  
  @RunWith(MockitoJUnitRunner.class)
  public class ListClustersCmdTest {
  
      ExtensionHelper extensionHelper;
      ListClustersCmd listClustersCmd = new ListClustersCmd();
  
      @Before
      public void setUp() {
          extensionHelper = mock(ExtensionHelper.class);
          listClustersCmd.extensionHelper = extensionHelper;
      }
  
      @Test
      public void updateClustersExtensions_emptyList_noAction() {
          listClustersCmd.updateClustersExtensions(Collections.emptyList());
          // No exception, nothing to verify
      }
  
      @Test
      public void updateClustersExtensions_nullList_noAction() {
          listClustersCmd.updateClustersExtensions(null);
          // No exception, nothing to verify
      }
  
      @Test
      public void updateClustersExtensions_withClusterResponses_setsExtension() {
          ClusterResponse cluster1 = mock(ClusterResponse.class);
          ClusterResponse cluster2 = mock(ClusterResponse.class);
          when(cluster1.getInternalId()).thenReturn(1L);
          when(cluster1.getHypervisorType()).thenReturn(Hypervisor.HypervisorType.External.name());
          when(cluster2.getInternalId()).thenReturn(2L);
          when(cluster2.getHypervisorType()).thenReturn(Hypervisor.HypervisorType.External.name());
          Extension ext1 = mock(Extension.class);
          when(ext1.getUuid()).thenReturn("a");
          Extension ext2 = mock(Extension.class);
          when(ext2.getUuid()).thenReturn("b");
          when(extensionHelper.getExtensionIdForCluster(anyLong())).thenAnswer(invocation -> invocation.getArguments()[0]);
          when(extensionHelper.getExtension(1L)).thenReturn(ext1);
          when(extensionHelper.getExtension(2L)).thenReturn(ext2);
          List<ClusterResponse> clusters = Arrays.asList(cluster1, cluster2);
          listClustersCmd.updateClustersExtensions(clusters);
          verify(cluster1).setExtensionId("a");
          verify(cluster2).setExtensionId("b");
      }
  }
  