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/*
 *  Copyright (c) xsocket.org, 2006-2008. All rights reserved.
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 *  Lesser General Public License for more details.
 *
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 * Please refer to the LGPL license at: http://www.gnu.org/copyleft/lesser.txt
 * The latest copy of this software may be found on http://www.xsocket.org/
 */
package org.xsocket.connection;

import java.io.IOException;
import java.nio.BufferUnderflowException;


import org.junit.Assert;
import org.junit.Test;
import org.xsocket.MaxReadSizeExceededException;
import org.xsocket.QAUtil;
import org.xsocket.connection.IConnectHandler;
import org.xsocket.connection.IDataHandler;
import org.xsocket.connection.INonBlockingConnection;
import org.xsocket.connection.IServer;
import org.xsocket.connection.NonBlockingConnection;
import org.xsocket.connection.Server;
import org.xsocket.connection.ConnectionUtils;




/**
*
* @author grro@xsocket.org
*/
public final class ReadSuspendAndResumeTest {

  private static final String DELIMITER = "\r";

  @Test 
  public void testSimple() throws Exception {
    IServer server = new Server(new Handler());
    ConnectionUtils.start(server);
    
    INonBlockingConnection connection = new NonBlockingConnection("localhost", server.getLocalPort());
    connection.write("helo" + DELIMITER);
    
    QAUtil.sleep(200);
    Assert.assertEquals(connection.readStringByDelimiter(DELIMITER), "helo");
    
    connection.suspendRead();
    
    connection.write("helo again" + DELIMITER);
    QAUtil.sleep(200);
    
    Assert.assertEquals(connection.available(), 0);
    
    connection.resumeRead();
    QAUtil.sleep(200);
    
    Assert.assertEquals(connection.readStringByDelimiter(DELIMITER), "helo again");
    
    connection.close();
    server.close();
  }

  
  
  
  @Test 
  public void testServerSupsend() throws Exception {
    SuspendedHandler hdl = new SuspendedHandler();
    IServer server = new Server(hdl);
    ConnectionUtils.start(server);
    
    INonBlockingConnection connection = new NonBlockingConnection("localhost", server.getLocalPort());
    for (int i = 0; i < 100; i++) {
      connection.write("helo" + DELIMITER);
      
      QAUtil.sleep(20);
    }  

    
    QAUtil.sleep(500);
    Assert.assertTrue(hdl.con.available() < 10);
    
    hdl.con.resumeRead();
    
    QAUtil.sleep(300);
    Assert.assertTrue(hdl.con.available() > 100);
    
    connection.close();
    server.close();
  }


  
  private static final class SuspendedHandler implements IConnectHandler, IDataHandler {

    private INonBlockingConnection con = null;
    
    public boolean onConnect(INonBlockingConnection connection) throws IOException {
      connection.suspendRead();
      this.con = connection;
      return true;
    }
    
    public boolean onData(INonBlockingConnection connection) throws IOException, BufferUnderflowException, MaxReadSizeExceededException {
      
      return true;
    }
  }


  private static final class Handler implements IDataHandler {
    
    public boolean onData(INonBlockingConnection connection) throws IOException, BufferUnderflowException, MaxReadSizeExceededException {
      connection.write(connection.readStringByDelimiter(DELIMITER)+ DELIMITER);
      return true;
    }
    
  }
  
}
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