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.master.block;
  
  import static org.junit.Assert.assertEquals;
  
  import org.junit.Test;
  
  /**
   * Tests for the {@link BlockId} class.
   */
  public final class BlockIdTest {
  
    private static final long MAX_SEQUENCE_NUMBER = 16777215L;
  
    /**
     * Tests that the {@link BlockId#createBlockId(long, long)} method works correctly when creating a
     * block with the maximum sequence number.
     */
    @Test
    public void createBlockIdWithMaxSequenceNumber() {
      assertEquals(33554431L, BlockId.createBlockId(1, BlockId.getMaxSequenceNumber()));
      assertEquals(MAX_SEQUENCE_NUMBER, BlockId.createBlockId(0, BlockId.getMaxSequenceNumber()));
      assertEquals(4294967295L, BlockId.createBlockId(255, BlockId.getMaxSequenceNumber()));
    }
  
    /**
     * Tests the {@link BlockId#createBlockId(long, long)} method.
     */
    @Test
    public void createBlockId() {
      assertEquals(16797216L, BlockId.createBlockId(1, 20000L));
      assertEquals(20000L, BlockId.createBlockId(0, 20000L));
      assertEquals(2071248101952L, BlockId.createBlockId(123456, 123456L));
    }
  
    /**
     * Tests the {@link BlockId#getContainerId(long)} and {@link BlockId#getSequenceNumber(long)}
     * methods.
     */
    @Test
    public void getContainerIdAndSequenceNumber() {
      assertEquals(1L, BlockId.getContainerId(33554431L));
      assertEquals(MAX_SEQUENCE_NUMBER, BlockId.getSequenceNumber(33554431L));
      assertEquals(255L, BlockId.getContainerId(4294967295L));
      assertEquals(MAX_SEQUENCE_NUMBER, BlockId.getSequenceNumber(4294967295L));
      assertEquals(123456L, BlockId.getContainerId(2071248101952L));
      assertEquals(123456L, BlockId.getSequenceNumber(2071248101952L));
    }
  
    @Test
    public void getFileId() {
      assertEquals(MAX_SEQUENCE_NUMBER, BlockId.getFileId(1L));
      assertEquals(MAX_SEQUENCE_NUMBER, BlockId.getFileId(20000L));
      assertEquals(MAX_SEQUENCE_NUMBER * 2 + 1, BlockId.getFileId(2 * MAX_SEQUENCE_NUMBER));
      assertEquals(2071264755711L, BlockId.getFileId(2071248101952L));
    }
  
    /**
     * Tests the {@link BlockId#getMaxSequenceNumber()} method.
     */
    @Test
    public void getMaxSequenceNumber() {
      assertEquals(MAX_SEQUENCE_NUMBER, BlockId.getMaxSequenceNumber());
    }
  }
  