content: /*
   * The Alluxio Open Foundation licenses this work under the Apache License, version 2.0
   * (the "License"). You may not use this work except in compliance with the License, which is
   * available at www.apache.org/licenses/LICENSE-2.0
   *
   * This software is distributed on an "AS IS" basis, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND,
   * either express or implied, as more fully set forth in the License.
   *
   * See the NOTICE file distributed with this work for information regarding copyright ownership.
   */
  
  package alluxio.worker.block;
  
  import static org.junit.Assert.assertEquals;
  
  import alluxio.ClientContext;
  import alluxio.conf.Configuration;
  import alluxio.master.MasterClientContext;
  import alluxio.worker.file.FileSystemMasterClient;
  
  import com.google.common.collect.ImmutableSet;
  import org.junit.Test;
  
  import java.io.IOException;
  import java.util.Set;
  
  public class PinListSyncTest {
  
    // context for creating FileSystemMasterClient
    private final MasterClientContext mContext = MasterClientContext.newBuilder(ClientContext.create(
        Configuration.global())).build();
  
    private final TestBlockWorker mBlockWorker = new TestBlockWorker();
  
    @Test
    public void syncPinList() {
      Set<Long> testPinLists = ImmutableSet.of(1L, 2L, 3L);
      // simulates pin list update returned by master
      FileSystemMasterClient client = new FileSystemMasterClient(mContext) {
        @Override
        public Set<Long> getPinList() {
          return ImmutableSet.copyOf(testPinLists);
        }
      };
  
      PinListSync sync = new PinListSync(mBlockWorker, client);
      sync.heartbeat(Long.MAX_VALUE);
  
      // should receive the latest pin list
      assertEquals(testPinLists, mBlockWorker.getPinList());
    }
  
    @Test
    public void syncPinListFailure() {
      // simulates get pin list failure
      FileSystemMasterClient client = new FileSystemMasterClient(mContext) {
        @Override
        public Set<Long> getPinList() throws IOException {
          throw new IOException();
        }
      };
  
      PinListSync sync = new PinListSync(mBlockWorker, client);
      // should fail
      sync.heartbeat(Long.MAX_VALUE);
  
      // should not get any pin list update
      assertEquals(ImmutableSet.of(), mBlockWorker.getPinList());
    }
  
    private static final class TestBlockWorker extends NoopBlockWorker {
      private Set<Long> mLatestPinList = ImmutableSet.of();
  
      @Override
      public void updatePinList(Set<Long> pinList) {
        mLatestPinList = ImmutableSet.copyOf(pinList);
      }
  
      public Set<Long> getPinList() {
        return mLatestPinList;
      }
    }
  }
  