/*
 *  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.extended;


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.List;

import org.apache.directory.shared.asn1.ber.Asn1Decoder;
import org.apache.directory.shared.asn1.ber.IAsn1Container;
import org.apache.directory.shared.asn1.codec.DecoderException;
import org.apache.directory.shared.asn1.codec.EncoderException;
import org.apache.directory.shared.ldap.codec.LdapMessageContainer;
import org.apache.directory.shared.ldap.message.ResultCodeEnum;
import org.apache.directory.shared.ldap.message.control.Control;
import org.apache.directory.shared.ldap.util.StringTools;
import org.junit.Test;


/**
 * Test the ExtendedResponse codec
 * 
 * @author <a href="mailto:dev@directory.apache.org">Apache Directory Project</a>
 */
public class ExtendedResponseTest
{
    /**
     * Test the decoding of a full ExtendedResponse
     */
    @Test
    public void testDecodeExtendedResponseSuccess()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x24 );

        stream.put( new byte[]
            { 0x30, 0x22, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp ExtendedResponse, ...
                0x78, 0x1D, // ExtendedResponse ::= [APPLICATION 23] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [10] LDAPOID OPTIONAL,
                ( byte ) 0x8A, 0x0D, '1', '.', '3', '.', '6', '.', '1', '.', '5', '.', '5', '.', '2',
                // response [11] OCTET STRING OPTIONAL }
                ( byte ) 0x8B, 0x05, 'v', 'a', 'l', 'u', 'e' } );

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

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );
        assertEquals( "1.3.6.1.5.5.2", extendedResponse.getResponseName() );
        assertEquals( "value", StringTools.utf8ToString( ( byte[] ) extendedResponse.getResponse() ) );

        // Check the length
        assertEquals( 0x24, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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


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

        ByteBuffer stream = ByteBuffer.allocate( 0x41 );

        stream.put( new byte[]
            { 
            0x30, 0x3F,                 // LDAPMessage ::= SEQUENCE {
              0x02, 0x01, 0x01,         // messageID MessageID
                                        // CHOICE { 
                                        //    ..., 
                                        //    extendedResp ExtendedResponse, 
                                        //    ...
              0x78, 0x1D,               // ExtendedResponse ::= [APPLICATION 23] SEQUENCE {
                                        //   COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00,       //   LDAPResult ::= SEQUENCE {
                                        //     resultCode ENUMERATED {
                                        //         success (0), ...
                                        //     },
                0x04, 0x00,             //     matchedDN LDAPDN,
                0x04, 0x00,             //     errorMessage LDAPString,
                                        //     referral [3] Referral OPTIONAL }
                ( byte ) 0x8A, 0x0D,    //   responseName [10] LDAPOID OPTIONAL,
                  '1', '.', '3', '.', '6', '.', '1', '.', '5', '.', '5', '.', '2',
                ( byte ) 0x8B, 0x05,    // response [11] OCTET STRING OPTIONAL } 
                  'v', 'a', 'l', 'u', 'e', 
              ( 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 = StringTools.dumpBytes( stream.array() );
        stream.flip();

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );
        assertEquals( "1.3.6.1.5.5.2", extendedResponse.getResponseName() );
        assertEquals( "value", StringTools.utf8ToString( ( byte[] ) extendedResponse.getResponse() ) );

        // Check the Control
        List<Control> controls = extendedResponse.getControls();

        assertEquals( 1, controls.size() );

        Control control = extendedResponse.getControls( 0 );
        assertEquals( "2.16.840.1.113730.3.4.2", control.getOid() );
        assertEquals( "", StringTools.dumpBytes( ( byte[] ) control.getValue() ) );

        // Check the length
        assertEquals( 0x41, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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


    /**
     * Test the decoding of a ExtendedRequest with no name
     */
    @Test
    public void testDecodeExtendedRequestNoName()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x0E );

        stream.put( new byte[]
            { 0x30, 0x0C, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x07, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00 // errorMessage LDAPString,
            // referral [3] Referral OPTIONAL }
            // responseName [0] LDAPOID,
            } );

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

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );

        // Check the length
        assertEquals( 0x0E, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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


    /**
     * Test the decoding of a ExtendedRequest with no name and a control
     */
    @Test
    public void testDecodeExtendedRequestNoNameWithControls()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x2B );

        stream.put( new byte[]
            { 0x30, 0x29, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x07, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [0] LDAPOID,
                ( byte ) 0xA0, 0x1B, // A control
                0x30, 0x19, 0x04, 0x17, 0x32, 0x2E, 0x31, 0x36, 0x2E, 0x38, 0x34, 0x30, 0x2E, 0x31, 0x2E, 0x31, 0x31,
                0x33, 0x37, 0x33, 0x30, 0x2E, 0x33, 0x2E, 0x34, 0x2E, 0x32 } );

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

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );

        // Check the Control
        List<Control> controls = extendedResponse.getControls();

        assertEquals( 1, controls.size() );

        Control control = extendedResponse.getControls( 0 );
        assertEquals( "2.16.840.1.113730.3.4.2", control.getOid() );
        assertEquals( "", StringTools.dumpBytes( ( byte[] ) control.getValue() ) );

        // Check the length
        assertEquals( 0x2B, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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


    /**
     * Test the decoding of an empty ExtendedResponse
     */
    @Test
    public void testDecodeExtendedResponseEmpty()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x07 );

        stream.put( new byte[]
            { 0x30, 0x05, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x00 // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
            } );

        stream.flip();

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode a DelRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
        }
    }


    /**
     * Test the decoding of an ExtendedResponse with an empty ResponseName
     */
    @Test
    public void testDecodeExtendedResponseEmptyResponseName()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x10 );

        stream.put( new byte[]
            { 0x30, 0x0E, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x09, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [0] LDAPOID,
                ( byte ) 0x8A, 0x00 } );

        stream.flip();

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode a DelRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
        }
    }


    /**
     * Test the decoding of an ExtendedResponse with a bad responseName
     */
    @Test
    public void testDecodeExtendedResponseBadOIDResponseName()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x12 );

        stream.put( new byte[]
            { 0x30, 0x10, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x0B, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [0] LDAPOID,
                ( byte ) 0x8A, 0x02, 'a', 'b' } );

        stream.flip();

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode a DelRequest PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
            fail( "We should never reach this point !!!" );
        }
        catch ( DecoderException de )
        {
            assertTrue( true );
        }
    }


    /**
     * Test the decoding of an ExtendedResponse with no response
     */
    @Test
    public void testDecodeExtendedResponseNoResponse()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x1D );

        stream.put( new byte[]
            { 0x30, 0x1B, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x16, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [0] LDAPOID,
                ( byte ) 0x8A, 0x0D, '1', '.', '3', '.', '6', '.', '1', '.', '5', '.', '5', '.', '2', } );

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

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );
        assertEquals( "1.3.6.1.5.5.2", extendedResponse.getResponseName() );
        assertEquals( "", StringTools.utf8ToString( ( byte[] ) extendedResponse.getResponse() ) );

        // Check the length
        assertEquals( 0x1D, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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


    /**
     * Test the decoding of an ExtendedResponse with no response with controls
     */
    @Test
    public void testDecodeExtendedResponseNoResponseWithControls()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x3A );

        stream.put( new byte[]
            { 0x30, 0x38, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x16, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [0] LDAPOID,
                ( byte ) 0x8A, 0x0D, '1', '.', '3', '.', '6', '.', '1', '.', '5', '.', '5', '.', '2', ( byte ) 0xA0,
                0x1B, // A control
                0x30, 0x19, 0x04, 0x17, 0x32, 0x2E, 0x31, 0x36, 0x2E, 0x38, 0x34, 0x30, 0x2E, 0x31, 0x2E, 0x31, 0x31,
                0x33, 0x37, 0x33, 0x30, 0x2E, 0x33, 0x2E, 0x34, 0x2E, 0x32 } );

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

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );
        assertEquals( "1.3.6.1.5.5.2", extendedResponse.getResponseName() );
        assertEquals( "", StringTools.utf8ToString( ( byte[] ) extendedResponse.getResponse() ) );

        // Check the Control
        List<Control> controls = extendedResponse.getControls();

        assertEquals( 1, controls.size() );

        Control control = extendedResponse.getControls( 0 );
        assertEquals( "2.16.840.1.113730.3.4.2", control.getOid() );
        assertEquals( "", StringTools.dumpBytes( ( byte[] ) control.getValue() ) );

        // Check the length
        assertEquals( 0x3A, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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


    /**
     * Test the decoding of an ExtendedResponse with an empty response
     */
    @Test
    public void testDecodeExtendedResponseEmptyResponse()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x1F );

        stream.put( new byte[]
            { 0x30, 0x1D, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x18, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [0] LDAPOID,
                ( byte ) 0x8A, 0x0D, '1', '.', '3', '.', '6', '.', '1', '.', '5', '.', '5', '.', '2', ( byte ) 0x8B,
                0x00 } );

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

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );
        assertEquals( "1.3.6.1.5.5.2", extendedResponse.getResponseName() );
        assertEquals( "", StringTools.utf8ToString( ( byte[] ) extendedResponse.getResponse() ) );

        // Check the length
        assertEquals( 0x1F, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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


    /**
     * Test the decoding of an ExtendedResponse with an empty response with
     * controls
     */
    @Test
    public void testDecodeExtendedResponseEmptyResponseWithControls()
    {
        Asn1Decoder ldapDecoder = new Asn1Decoder();

        ByteBuffer stream = ByteBuffer.allocate( 0x3C );

        stream.put( new byte[]
            { 0x30, 0x3A, // LDAPMessage ::= SEQUENCE {
                0x02, 0x01, 0x01, // messageID MessageID
                // CHOICE { ..., extendedResp Response, ...
                0x78, 0x18, // ExtendedResponse ::= [APPLICATION 24] SEQUENCE {
                // COMPONENTS OF LDAPResult,
                0x0A, 0x01, 0x00, // LDAPResult ::= SEQUENCE {
                // resultCode ENUMERATED {
                // success (0), ...
                // },
                0x04, 0x00, // matchedDN LDAPDN,
                0x04, 0x00, // errorMessage LDAPString,
                // referral [3] Referral OPTIONAL }
                // responseName [0] LDAPOID,
                ( byte ) 0x8A, 0x0D, '1', '.', '3', '.', '6', '.', '1', '.', '5', '.', '5', '.', '2', ( byte ) 0x8B,
                0x00, ( byte ) 0xA0, 0x1B, // A control
                0x30, 0x19, 0x04, 0x17, 0x32, 0x2E, 0x31, 0x36, 0x2E, 0x38, 0x34, 0x30, 0x2E, 0x31, 0x2E, 0x31, 0x31,
                0x33, 0x37, 0x33, 0x30, 0x2E, 0x33, 0x2E, 0x34, 0x2E, 0x32 } );

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

        // Allocate a LdapMessage Container
        IAsn1Container ldapMessageContainer = new LdapMessageContainer();

        // Decode the ExtendedResponse PDU
        try
        {
            ldapDecoder.decode( stream, ldapMessageContainer );
        }
        catch ( DecoderException de )
        {
            de.printStackTrace();
            fail( de.getMessage() );
        }

        // Check the decoded ExtendedResponse PDU
        ExtendedResponseCodec extendedResponse = ( ( LdapMessageContainer ) ldapMessageContainer ).getExtendedResponse();

        assertEquals( 1, extendedResponse.getMessageId() );
        assertEquals( ResultCodeEnum.SUCCESS, extendedResponse.getLdapResult().getResultCode() );
        assertEquals( "", extendedResponse.getLdapResult().getMatchedDN() );
        assertEquals( "", extendedResponse.getLdapResult().getErrorMessage() );
        assertEquals( "1.3.6.1.5.5.2", extendedResponse.getResponseName() );
        assertEquals( "", StringTools.utf8ToString( ( byte[] ) extendedResponse.getResponse() ) );

        // Check the Control
        List<Control> controls = extendedResponse.getControls();

        assertEquals( 1, controls.size() );

        Control control = extendedResponse.getControls( 0 );
        assertEquals( "2.16.840.1.113730.3.4.2", control.getOid() );
        assertEquals( "", StringTools.dumpBytes( ( byte[] ) control.getValue() ) );

        // Check the length
        assertEquals( 0x3C, extendedResponse.computeLength() );

        // Check the encoding
        try
        {
            ByteBuffer bb = extendedResponse.encode();

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

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