package org.apache.commons.digester3.binder;
   
   /*
    * 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 static junit.framework.Assert.assertEquals;
  import static junit.framework.Assert.fail;
  import static org.apache.commons.digester3.binder.DigesterLoader.newLoader;
  
  import java.io.IOException;
  import java.net.URL;
  import java.util.concurrent.LinkedBlockingQueue;
  import java.util.concurrent.ThreadPoolExecutor;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.commons.digester3.Digester;
  import org.apache.commons.digester3.xmlrules.FromXmlRulesModule;
  import org.junit.Before;
  import org.junit.Test;
  import org.xml.sax.SAXException;
  
  /**
   * Test.
   */
  public class Digester163TestCase
  {
  
      public static final int MAX_THREADS = 4;
  
      private DigesterLoader loader = null;
  
      @Before
      public void before()
      {
          final URL url = getClass().getResource( "rules.xml" );
          loader = newLoader( new FromXmlRulesModule()
          {
              @Override
              protected void loadRules()
              {
                  loadXMLRules( url );
              }
  
          } );
      }
  
      @Test
      public void testSingle()
          throws IOException, SAXException
      {
          Digester dig = loader.newDigester();
          URL url = Digester163TestCase.class.getResource( "test.xml" );
          // lets parse - result does not matter here
          Entity et = dig.parse( url );
          assertEquals( "Author 1", et.getAuthor() );
      }
  
      @Test
      public void test()
          throws InterruptedException
      {
          ThreadPoolExecutor executor = new ThreadPoolExecutor( MAX_THREADS,
                                                                MAX_THREADS,
                                                                Long.MAX_VALUE,
                                                                TimeUnit.NANOSECONDS,
                                                                new LinkedBlockingQueue<Runnable>() );
          final URL url = Digester163TestCase.class.getResource( "test.xml" );
          final LinkedBlockingQueue<Exception> exceptions = new LinkedBlockingQueue<Exception>();
          for ( int i = 0; i < MAX_THREADS * 2; i++ )
          {
              executor.submit( new Runnable()
              {
                  public void run()
                  {
                      try
                      {
                          Digester dig = loader.newDigester();
                          // lets parse - result does not matter here
                          dig.parse( url );
                      }
                      catch ( Exception e )
                      {
                          exceptions.add( e );
                     }
                 }
             } );
         }
 
         while ( !executor.awaitTermination( 10, TimeUnit.MILLISECONDS ) )
         {
             if ( executor.getQueue().isEmpty() )
             {
                 executor.shutdown();
             }
             if ( executor.isTerminated() )
             {
                 break;
             }
         }
 
         Exception e = exceptions.peek();
         if ( e != null )
         {
             while ( true )
             {
                 e = exceptions.poll();
                 if ( e == null )
                 {
                     break;
                 }
                 e.printStackTrace();
             }
             fail( "Caught " + exceptions.size() + " exceptions." );
         }
     }
 
 }