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.cassandra.transport;
  
  import java.io.IOException;
  import java.nio.ByteBuffer;
  
  import org.junit.BeforeClass;
  import org.junit.Test;
  
  import org.apache.cassandra.config.DatabaseDescriptor;
  import org.apache.cassandra.db.DeletionTime;
  import org.apache.cassandra.io.sstable.format.big.BigFormat;
  import org.apache.cassandra.io.util.DataInputBuffer;
  import org.apache.cassandra.io.util.DataOutputBuffer;
  
  import static org.junit.Assert.assertEquals;
  
  /**
   * We test here serialization of DTs and some of it's sentinel values 
   *
   */
  public class DeletionTimeDeSerTest
  {
      @BeforeClass
      public static void setupDD()
      {
          DatabaseDescriptor.daemonInitialization();
      }
      
      @Test
      public void testLDTDeserLive() throws IOException
      {
          assertEquals(DeletionTime.LIVE, serDeser(DeletionTime.LIVE));
      }
      
      @Test
      public void testLDTDeserLongMAX_VALUE() throws IOException
      {
          DeletionTime dt = DeletionTime.build(Long.MAX_VALUE, 2147483600);
          assertEquals(dt, serDeser(dt));
      }
      
      @Test
      public void testLDTDeser() throws IOException
      {
          // Test Serialization in all bit possible positions
          for (int i = 0; i < 63; i++)
          {
              DeletionTime dt = DeletionTime.build(1L << i, 2147483600);
              assertEquals(dt, serDeser(dt));
          }
      }
      
      private DeletionTime serDeser(DeletionTime dt) throws IOException
      {
          DeletionTime readDt = null;
          int offset = 2;
  
          try(DataOutputBuffer out = new DataOutputBuffer(12)) // Long + Int = 8 + 4
          {
              DeletionTime.getSerializer(BigFormat.getInstance().getLatestVersion()).serialize(dt, out);
              
              try(DataInputBuffer in = new DataInputBuffer(out.toByteArray()))
              {
                  // Test *both* deserializers
  
                  readDt = DeletionTime.getSerializer(BigFormat.getInstance().getLatestVersion()).deserialize(in);
  
                  ByteBuffer bbOrig = out.buffer();
                  bbOrig.rewind();
                  ByteBuffer bb = ByteBuffer.allocate(bbOrig.capacity() + offset);
                  bb.position(offset);
                  bb.put(bbOrig);
                  DeletionTime readDt2 = DeletionTime.getSerializer(BigFormat.getInstance().getLatestVersion()).deserialize(bb, offset);
                  assertEquals(readDt, readDt2);
              }
          }
          
          return readDt;
      }
  }
  