/*

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

 * This code is free software; you can redistribute it and/or modify it

 * under the terms of the GNU General Public License version 2 only, as

 * published by the Free Software Foundation.

 *

 * This code 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 General Public License

 * version 2 for more details (a copy is included in the LICENSE file that

 * accompanied this code).

 *

 * You should have received a copy of the GNU General Public License version

 * 2 along with this work; if not, write to the Free Software Foundation,

 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

 *

 */

/* @test

 * @bug 4462336

 * @summary Simple MappedByteBuffer tests

 */

import java.io.*;

import java.nio.*;

import java.nio.channels.*;

public class Basic {

    public static void main(String[] args) throws Exception {

        byte[] srcData = new byte[20];

        for (int i=0; i<20; i++)

            srcData[i] = 3;

        File blah = File.createTempFile("blah", null);

        blah.deleteOnExit();

        FileOutputStream fos = new FileOutputStream(blah);

        FileChannel fc = fos.getChannel();

        fc.write(ByteBuffer.wrap(srcData));

        fc.close();

        fos.close();

        FileInputStream fis = new FileInputStream(blah);

        fc = fis.getChannel();

        MappedByteBuffer mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10);

        mbb.load();

        mbb.isLoaded();

        mbb.force();

        if (!mbb.isReadOnly())

            throw new RuntimeException("Incorrect isReadOnly");

        fc.close();

        fis.close();

        RandomAccessFile raf = new RandomAccessFile(blah, "r");

        fc = raf.getChannel();

        mbb = fc.map(FileChannel.MapMode.READ_ONLY, 0, 10);

        if (!mbb.isReadOnly())

            throw new RuntimeException("Incorrect isReadOnly");

        fc.close();

        raf.close();

        raf = new RandomAccessFile(blah, "rw");

        fc = raf.getChannel();

        mbb = fc.map(FileChannel.MapMode.READ_WRITE, 0, 10);

        if (mbb.isReadOnly())

            throw new RuntimeException("Incorrect isReadOnly");

        fc.close();

        raf.close();

    }

}