package org.codehaus.plexus.archiver.zip;

/*
 * Copyright  2001,2004 The Apache Software Foundation
 *
 *  Licensed 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 junit.framework.TestCase;
import org.codehaus.plexus.archiver.UnixStat;

/**
 * JUnit 3 testcases for org.apache.tools.zip.AsiExtraField.
 *
 * @version $Revision$ $Date$
 *          from org.apache.ant.tools.zip.AsiExtraFieldTest v1.8
 */
public class AsiExtraFieldTest
    extends TestCase
    implements UnixStat
{
    public AsiExtraFieldTest( String name )
    {
        super( name );
    }

    /**
     * Test file mode magic.
     */
    public void testModes()
    {
        AsiExtraField a = new AsiExtraField();
        a.setMode( 0123 );
        assertEquals( "plain file", 0100123, a.getMode() );
        a.setDirectory( true );
        assertEquals( "directory", 040123, a.getMode() );
        a.setLinkedFile( "test" );
        assertEquals( "symbolic link", 0120123, a.getMode() );
    }

    /**
     * Test content.
     */
    public void testContent()
    {
        AsiExtraField a = new AsiExtraField();
        a.setMode( 0123 );
        a.setUserId( 5 );
        a.setGroupId( 6 );
        byte[] b = a.getLocalFileDataData();

        // CRC manually calculated, sorry
        byte[] expect = {(byte) 0xC6, 0x02, 0x78, (byte) 0xB6, // CRC
            0123, (byte) 0x80,                   // mode
            0, 0, 0, 0,                         // link length
            5, 0, 6, 0};                        // uid, gid
        assertEquals( "no link", expect.length, b.length );
        for ( int i = 0; i < expect.length; i++ )
        {
            assertEquals( "no link, byte " + i, expect[ i ], b[ i ] );
        }

        a.setLinkedFile( "test" );
        expect = new byte[]{0x75, (byte) 0x8E, 0x41, (byte) 0xFD, // CRC
            0123, (byte) 0xA0,                   // mode
            4, 0, 0, 0,                         // link length
            5, 0, 6, 0,                         // uid, gid
            (byte) 't', (byte) 'e', (byte) 's', (byte) 't'};
        b = a.getLocalFileDataData();
        assertEquals( "no link", expect.length, b.length );
        for ( int i = 0; i < expect.length; i++ )
        {
            assertEquals( "no link, byte " + i, expect[ i ], b[ i ] );
        }

    }

    /**
     * Test reparse
     */
    public void testReparse()
        throws Exception
    {
        // CRC manually calculated, sorry
        byte[] data = {(byte) 0xC6, 0x02, 0x78, (byte) 0xB6, // CRC
            0123, (byte) 0x80,                   // mode
            0, 0, 0, 0,                         // link length
            5, 0, 6, 0};                        // uid, gid
        AsiExtraField a = new AsiExtraField();
        a.parseFromLocalFileData( data, 0, data.length );
        assertEquals( "length plain file", data.length,
                      a.getLocalFileDataLength().getValue() );
        assertTrue( "plain file, no link", !a.isLink() );
        assertTrue( "plain file, no dir", !a.isDirectory() );
        assertEquals( "mode plain file", FILE_FLAG | 0123, a.getMode() );
        assertEquals( "uid plain file", 5, a.getUserId() );
        assertEquals( "gid plain file", 6, a.getGroupId() );

        data = new byte[]{0x75, (byte) 0x8E, 0x41, (byte) 0xFD, // CRC
            0123, (byte) 0xA0,                   // mode
            4, 0, 0, 0,                         // link length
            5, 0, 6, 0,                         // uid, gid
            (byte) 't', (byte) 'e', (byte) 's', (byte) 't'};
        a = new AsiExtraField();
        a.parseFromLocalFileData( data, 0, data.length );
        assertEquals( "length link", data.length,
                      a.getLocalFileDataLength().getValue() );
        assertTrue( "link, is link", a.isLink() );
        assertTrue( "link, no dir", !a.isDirectory() );
        assertEquals( "mode link", LINK_FLAG | 0123, a.getMode() );
        assertEquals( "uid link", 5, a.getUserId() );
        assertEquals( "gid link", 6, a.getGroupId() );
        assertEquals( "test", a.getLinkedFile() );

        data = new byte[]{(byte) 0x8E, 0x01, (byte) 0xBF, (byte) 0x0E, // CRC
            0123, (byte) 0x40,                         // mode
            0, 0, 0, 0,                               // link
            5, 0, 6, 0};                          // uid, gid
        a = new AsiExtraField();
        a.parseFromLocalFileData( data, 0, data.length );
        assertEquals( "length dir", data.length,
                      a.getLocalFileDataLength().getValue() );
        assertTrue( "dir, no link", !a.isLink() );
        assertTrue( "dir, is dir", a.isDirectory() );
        assertEquals( "mode dir", DIR_FLAG | 0123, a.getMode() );
        assertEquals( "uid dir", 5, a.getUserId() );
        assertEquals( "gid dir", 6, a.getGroupId() );

        data = new byte[]{0, 0, 0, 0,                           // bad CRC
            0123, (byte) 0x40,                     // mode
            0, 0, 0, 0,                           // link
            5, 0, 6, 0};                          // uid, gid
        a = new AsiExtraField();
        try
        {
            a.parseFromLocalFileData( data, 0, data.length );
            fail( "should raise bad CRC exception" );
        }
        catch ( Exception e )
        {
            assertEquals( "bad CRC checksum 0 instead of ebf018e",
                          e.getMessage() );
        }
    }
}
