/*
 *  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. 
 *  
 */
package org.apache.directory.shared.ldap.codec.unbind;


import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;

import java.nio.ByteBuffer;
import java.util.Map;

import org.apache.directory.junit.tools.Concurrent;
import org.apache.directory.junit.tools.ConcurrentJunitRunner;
import org.apache.directory.shared.asn1.DecoderException;
import org.apache.directory.shared.asn1.ber.Asn1Decoder;
import org.apache.directory.shared.asn1.ber.Asn1Container;
import org.apache.directory.shared.asn1.EncoderException;
import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
import org.apache.directory.shared.ldap.codec.message.LdapEncoder;
import org.apache.directory.shared.ldap.message.UnbindRequest;
import org.apache.directory.shared.ldap.codec.message.UnbindRequestImpl;
import org.apache.directory.shared.ldap.message.control.Control;
import org.apache.directory.shared.util.Strings;
import org.junit.Test;
import org.junit.runner.RunWith;


/**
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
@RunWith(ConcurrentJunitRunner.class)
@Concurrent()
public class UnBindRequestTest
{
    /** The encoder instance */
    org.apache.directory.shared.ldap.codec.message.LdapEncoder encoder = new LdapEncoder();


    /**
     * Test the decoding of a UnBindRequest with no controls
     */
    @Test
    public void testDecodeUnBindRequestNoControls()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x07 );
        stream.put( new byte[]
            { 0x30, 0x05, // LDAPMessage ::=SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                0x42, 0x00, // CHOICE { ..., unbindRequest UnbindRequest,...
            // UnbindRequest ::= [APPLICATION 2] NULL
            } );

        String decodedPdu = Strings.dumpBytes(stream.array());
        stream.flip();

        // Allocate a BindRequest Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        UnbindRequest unbindRequest = ( ( LdapMessageContainer ) ldapMessageContainer ).getUnbindRequest();

        assertEquals( 1, unbindRequest.getMessageId() );

        // Check the encoding
        UnbindRequest internalUnbindRequest = new UnbindRequestImpl( unbindRequest.getMessageId() );

        try
        {
            ByteBuffer bb = encoder.encodeMessage( internalUnbindRequest );

            // Check the length
            assertEquals( 0x07, bb.limit() );

            String encodedPdu = Strings.dumpBytes(bb.array());

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    /**
     * Test the decoding of a UnBindRequest with controls
     */
    @Test
    public void testDecodeUnBindRequestWithControls()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x24 );
        stream.put( new byte[]
            { 0x30,
                0x22, // LDAPMessage ::=SEQUENCE {
                0x02, 0x01,
                0x01, // messageID MessageID
                0x42,
                0x00, // CHOICE { ..., unbindRequest UnbindRequest,...
                // UnbindRequest ::= [APPLICATION 2] NULL
                ( byte ) 0xA0,
                0x1B, // A control
                0x30, 0x19, 0x04, 0x17, '2', '.', '1', '6', '.', '8', '4', '0', '.', '1', '.', '1', '1', '3', '7', '3',
                '0', '.', '3', '.', '4', '.', '2' } );

        String decodedPdu = Strings.dumpBytes(stream.array());
        stream.flip();

        // Allocate a BindRequest Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        UnbindRequest unbindRequest = ( ( LdapMessageContainer ) ldapMessageContainer ).getUnbindRequest();

        assertEquals( 1, unbindRequest.getMessageId() );

        // Check the Control
        Map<String, Control> controls = unbindRequest.getControls();

        assertEquals( 1, controls.size() );

        Control control = controls.get( "2.16.840.1.113730.3.4.2" );
        assertEquals( "2.16.840.1.113730.3.4.2", control.getOid() );
        assertEquals( "", Strings.dumpBytes((byte[]) control.getValue()) );

        // Check the encoding
        UnbindRequest internalUnbindRequest = new UnbindRequestImpl( unbindRequest.getMessageId() );
        internalUnbindRequest.addControl( control );

        try
        {
            ByteBuffer bb = encoder.encodeMessage( internalUnbindRequest );

            // Check the length
            assertEquals( 0x24, bb.limit() );

            String encodedPdu = Strings.dumpBytes(bb.array());

            assertEquals( encodedPdu, decodedPdu );
        }
        catch ( EncoderException ee )
        {
            ee.printStackTrace();
            fail( ee.getMessage() );
        }
    }


    /**
     * Test the decoding of a UnBindRequest with a not null body
     */
    @Test
    public void testDecodeUnBindRequestNotNull()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x09 );
        stream.put( new byte[]
            { 0x30, 0x07, // LDAPMessage ::=SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                0x42, 0x02, // CHOICE { ..., unbindRequest UnbindRequest,...
                0x04, 0x00 // UnbindRequest ::= [APPLICATION 2] NULL

            } );

        stream.flip();

        // Allocate a LdapMessage Container
        Asn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode a UnbindRequest message
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
            return;
        }

        fail( "We should not reach this point" );
    }
}