package org.apache.commons.jcs3.auxiliary.disk.jdbc.hsql;
   
   import java.util.HashSet;
   import java.util.Map;
   import java.util.Set;
   
   import org.apache.commons.jcs3.JCS;
   import org.apache.commons.jcs3.access.CacheAccess;
   import org.apache.commons.jcs3.access.exception.CacheException;
  import org.apache.commons.jcs3.engine.behavior.ICacheElement;
  
  /*
   * 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 junit.framework.TestCase;
  
  /**
   * Test which exercises the HSQL cache.
   */
  public class HSQLDiskCacheUnitTest
      extends TestCase
  {
      /**
       * Test setup
       */
      @Override
      public void setUp()
      {
          JCS.setConfigFilename( "/TestHSQLDiskCache.ccf" );
      }
  
      /**
       * Adds items to cache, gets them, and removes them. The item count is more than the size of the
       * memory cache, so items should spool to disk.
       * <p>
       * @throws Exception If an error occurs
       */
      public void testBasicPutRemove()
          throws Exception
      {
          final int items = 20;
  
          final String region = "testBasicPutRemove";
  
          final CacheAccess<String, String> jcs = JCS.getInstance( region );
  
          // Add items to cache
          for ( int i = 0; i <= items; i++ )
          {
              jcs.put( i + ":key", region + " data " + i );
          }
  
          // Test that all items are in cache
          for ( int i = 0; i <= items; i++ )
          {
              final String value = jcs.get( i + ":key" );
              assertEquals( "key = [" + i + ":key] value = [" + value + "]", region + " data " + i, value );
          }
  
          // Test that getElements returns all the expected values
          final Set<String> keys = new HashSet<>();
          for ( int i = 0; i <= items; i++ )
          {
              keys.add( i + ":key" );
          }
  
          final Map<String, ICacheElement<String, String>> elements = jcs.getCacheElements( keys );
          for ( int i = 0; i <= items; i++ )
          {
              final ICacheElement<String, String> element = elements.get( i + ":key" );
              assertNotNull( "element " + i + ":key is missing", element );
              assertEquals( "value " + i + ":key", region + " data " + i, element.getVal() );
          }
  
          // Remove all the items
          for ( int i = 0; i <= items; i++ )
          {
              jcs.remove( i + ":key" );
          }
  
          // Verify removal
          for ( int i = 0; i <= items; i++ )
          {
             assertNull( "Removed key should be null: " + i + ":key", jcs.get( i + ":key" ) );
         }
     }
 
     /**
      * Verify that remove all work son a region where it is not prohibited.
      * <p>
      * @throws CacheException
      * @throws InterruptedException
      */
     public void testRemoveAll()
         throws CacheException, InterruptedException
     {
         final String region = "removeAllAllowed";
         final CacheAccess<String, String> jcs = JCS.getInstance( region );
 
         final int items = 20;
 
         // Add items to cache
         for ( int i = 0; i <= items; i++ )
         {
             jcs.put( i + ":key", region + " data " + i );
         }
 
         // a db thread could be updating when we call remove all?
         // there was a race on remove all, an element may be put to disk after it is called even
         // though the put
         // was called before clear.
         // I discovered it and removed it.
         // Thread.sleep( 500 );
 
 //        System.out.println( jcs.getStats() );
 
         jcs.clear();
 
         for ( int i = 0; i <= items; i++ )
         {
             final String value = jcs.get( i + ":key" );
             assertNull( "value should be null key = [" + i + ":key] value = [" + value + "]", value );
         }
     }
 
     /**
      * Verify that remove all does not work on a region where it is prohibited.
      * <p>
      * @throws CacheException
      * @throws InterruptedException
      */
     public void testRemoveAllProhibition()
         throws CacheException, InterruptedException
     {
         final String region = "noRemoveAll";
         final CacheAccess<String, String> jcs = JCS.getInstance( region );
 
         final int items = 20;
 
         // Add items to cache
         for ( int i = 0; i <= items; i++ )
         {
             jcs.put( i + ":key", region + " data " + i );
         }
 
         // a db thread could be updating the disk when
         // Thread.sleep( 500 );
 
         jcs.clear();
 
         for ( int i = 0; i <= items; i++ )
         {
             final String value = jcs.get( i + ":key" );
             assertEquals( "key = [" + i + ":key] value = [" + value + "]", region + " data " + i, value );
         }
     }
 }