TelnetConnectionTests.java

/*******************************************************************************
 * Copyright (c) 2011, 2012 SAP AG
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 *
 * Contributors:
 *    Lazar Kirchev, SAP AG - initial contribution
 ******************************************************************************/

package org.eclipse.equinox.console.telnet;

import org.apache.felix.service.command.CommandProcessor;
import org.apache.felix.service.command.CommandSession;
import org.junit.Assert;
import org.junit.Test;
import org.easymock.EasyMock;
import org.eclipse.equinox.console.common.ConsoleInputStream;

import java.io.InputStream;
import java.io.OutputStream;
import java.io.PrintStream;
import java.net.ServerSocket;
import java.net.Socket;

public class TelnetConnectionTests {

	private static final String HOST = "localhost";
    private static final int TEST_CONTENT = 100;
    private static final int IAC = 255;

    @Test
    public void testTelneConnection() throws Exception {
        ServerSocket servSocket = null;
        Socket socketClient = null;
        Socket socketServer = null;
        TelnetConnection connection = null;
        OutputStream outClient = null;
        OutputStream outServer = null;

        try {
            servSocket = new ServerSocket(0);
            socketClient = new Socket(HOST, servSocket.getLocalPort());
            socketServer = servSocket.accept();

            CommandSession session = EasyMock.createMock(CommandSession.class);
            session.put((String)EasyMock.anyObject(), EasyMock.anyObject());
            EasyMock.expectLastCall().times(3);
            EasyMock.expect(session.execute((String)EasyMock.anyObject())).andReturn(null);
            session.close();
    		EasyMock.expectLastCall();
            EasyMock.replay(session);
            
            CommandProcessor processor = EasyMock.createMock(CommandProcessor.class);
            EasyMock.expect(processor.createSession((ConsoleInputStream) EasyMock.anyObject(), (PrintStream) EasyMock.anyObject(), (PrintStream) EasyMock.anyObject())).andReturn(session);
            EasyMock.replay(processor);
            
            connection = new TelnetConnection(socketServer, processor, null);
            connection.start();

            outClient = socketClient.getOutputStream();
            outClient.write(TEST_CONTENT);
            outClient.write('\n');
            outClient.flush();

            InputStream input = socketServer.getInputStream();
            int in = input.read();
            Assert.assertTrue("Server received [" + in + "] instead of " + TEST_CONTENT + " from the telnet client.", in == TEST_CONTENT);

            input = socketClient.getInputStream();
            in = input.read();
            // here IAC is expected, since when the output stream in TelnetConsoleSession is created, several telnet
            // commands are written to it, each of them starting with IAC
            Assert.assertTrue("Client receive telnet responses from the server unexpected value [" + in + "] instead of " + IAC + ".", in == IAC);
            connection.telnetNegotiationFinished();
            Thread.sleep(5000);
            EasyMock.verify(session, processor);
        } finally {
        	if (socketClient != null) {
        		socketClient.close();
        	}
        	if (outClient != null) {
        		outClient.close();
        	}
        	if (outServer != null) {
        		outServer.close();
        	}

        	if (socketServer != null) {
        		socketServer.close();
        	}

        	if (servSocket != null) {
        		servSocket.close();
        	} 
        }
    }
}