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.bookkeeper.clients.impl.container;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertNotNull;
  import static org.junit.Assert.assertNull;
  import static org.mockito.ArgumentMatchers.anyLong;
  import static org.mockito.ArgumentMatchers.eq;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.times;
  import static org.mockito.Mockito.verify;
  import static org.mockito.Mockito.when;
  
  import org.junit.Test;
  
  /**
   * Unit tests for {@link StorageContainerChannelManager}.
   */
  public class TestStorageContainerChannelManager {
  
      @Test
      public void testGetOrCreate() {
          StorageContainerChannel channel1 = mock(StorageContainerChannel.class);
          StorageContainerChannel channel2 = mock(StorageContainerChannel.class);
          StorageContainerChannel channel3 = mock(StorageContainerChannel.class);
  
          StorageContainerChannelFactory factory = mock(StorageContainerChannelFactory.class);
          StorageContainerChannelManager manager = new StorageContainerChannelManager(factory);
          when(factory.createStorageContainerChannel(anyLong()))
              .thenReturn(channel1)
              .thenReturn(channel2)
              .thenReturn(channel3);
  
          assertNull(manager.remove(1L));
          assertEquals(channel1, manager.getOrCreate(1L));
          verify(factory, times(1)).createStorageContainerChannel(eq(1L));
          assertEquals(channel1, manager.getOrCreate(1L));
          verify(factory, times(1)).createStorageContainerChannel(eq(1L));
  
          assertEquals(channel1, manager.remove(1L));
      }
  
      @Test
      public void testClear() throws Exception {
          StorageContainerChannelManager manager = new StorageContainerChannelManager(
              scId -> mock(StorageContainerChannel.class));
  
          int numChannels = 10;
          for (int i = 0; i < numChannels; i++) {
              assertNotNull(manager.getOrCreate(i));
          }
          assertEquals(numChannels, manager.getNumChannels());
          manager.close();
          assertEquals(0, manager.getNumChannels());
      }
  
  }
  