package org.apache.directmemory.cache;
   
   /*
    * 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.
   */
  
  import org.apache.directmemory.DirectMemory;
  import org.apache.directmemory.measures.Ram;
  import org.apache.directmemory.memory.AllocationPolicy;
  import org.apache.directmemory.memory.MemoryManagerService;
  import org.apache.directmemory.memory.MemoryManagerServiceImpl;
  import org.apache.directmemory.memory.Pointer;
  import org.apache.directmemory.memory.RoundRobinAllocationPolicy;
  import org.junit.Test;
  
  import java.io.IOException;
  import java.io.Serializable;
  
  import static org.junit.Assert.*;
  
  public class CacheServiceImplTest
  {
  
      @Test
      public void testOffHeapExceedMemoryReturnNullWhenTrue()
          throws IOException
      {
          AllocationPolicy allocationPolicy = new RoundRobinAllocationPolicy();
          MemoryManagerService<byte[]> memoryManager = new MemoryManagerServiceImpl<byte[]>( allocationPolicy, true );
          CacheService<Integer, byte[]> cache =
              new DirectMemory<Integer, byte[]>().setMemoryManager( memoryManager ).setNumberOfBuffers( 1 ).setSize( Ram.Mb( 1 ) ).newCacheService();
  
          for ( int i = 0; i < 1000; i++ )
          {
              Pointer<byte[]> pointer = cache.put( i, new byte[1024] );
              if ( ( i % 100 ) == 0 )
              {
                  System.out.println( pointer );
              }
          }
          assertTrue( "This test ensures that no unexpected errors/behaviours occurs when heap space is full", true );
  
          cache.close();
      }
  
      private static class MyBean
          implements Serializable
      {
          private static final long serialVersionUID = -8865690921195047235L;
  
          private String name;
  
          /**
           * @return the name
           */
          @SuppressWarnings( "unused" )
          public String getName()
          {
              return name;
          }
  
          /**
           * @param name the name to set
           */
          public void setName( String name )
          {
              this.name = name;
          }
      }
  
      @Test
      public void testEntryIsNoMoreAvailableAfterExpiry()
          throws InterruptedException, IOException
      {
          AllocationPolicy allocationPolicy = new RoundRobinAllocationPolicy();
          MemoryManagerService<MyBean> memoryManager = new MemoryManagerServiceImpl<MyBean>( allocationPolicy, true );
          CacheService<Integer, MyBean> cache =
              new DirectMemory<Integer, MyBean>().setMemoryManager( memoryManager ).setNumberOfBuffers( 1 ).setSize( Ram.Mb( 1 ) ).newCacheService();
          /*
           * let the scan run every 10s
           */
          cache.scheduleDisposalEvery( 3 * 1000 );
          /*
           * entry should be expired but not freed after 1s in the cache
          */
         MyBean originalEntry = new MyBean();
         originalEntry.setName( "the name" );
         cache.put( 1, originalEntry, 1 * 1000 );
         Pointer<MyBean> pointer = cache.getPointer( 1 );
         assertNotNull( pointer );
         assertFalse( pointer.isExpired() );
         assertFalse( pointer.isFree() );
         /*
          * wait for 2s to be sure the entry has been expired
          */
         Thread.sleep( 2000 );
         pointer = cache.getPointer( 1 );
         assertNotNull( pointer );
         assertTrue( pointer.isExpired() );
         assertFalse( pointer.isFree() );
         /*
          * wait for 11s to be sure the entry has been evicted
          */
         Thread.sleep( 4000 );
         pointer = cache.getPointer( 1 );
         assertNotNull( pointer );
         assertTrue( pointer.isExpired() );
         assertTrue( pointer.isFree() );
 
         cache.close();
     }
 
 }