/*

 * Copyright 2002 Sun Microsystems, Inc.  All Rights Reserved.

 * 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.

 *

 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,

 * CA 95054 USA or visit www.sun.com if you need additional information or

 * have any questions.

 */

/* @test

 * @summary Test selection of ready pipe

 */

import java.io.*;

import java.nio.ByteBuffer;

import java.nio.channels.*;

import java.nio.channels.spi.SelectorProvider;

import java.util.Random;

/**

 * Testing PipeChannel

 */

public class SelectPipe {

    private static Random generator = new Random();

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

        SelectorProvider sp = SelectorProvider.provider();

        Selector selector = Selector.open();

        Pipe p = sp.openPipe();

        Pipe.SinkChannel sink = p.sink();

        Pipe.SourceChannel source = p.source();

        source.configureBlocking(false);

        sink.configureBlocking(false);

        SelectionKey readkey = source.register(selector, SelectionKey.OP_READ);

        SelectionKey writekey = sink.register(selector, SelectionKey.OP_WRITE);

        ByteBuffer outgoingdata = ByteBuffer.allocateDirect(10);

        byte[] someBytes = new byte[10];

        generator.nextBytes(someBytes);

        outgoingdata.put(someBytes);

        outgoingdata.flip();

        int totalWritten = 0;

        while (totalWritten < 10) {

            int written = sink.write(outgoingdata);

            if (written < 0)

                throw new Exception("Write failed");

            totalWritten += written;

        }

        if (selector.select(1000) == 0) {

            throw new Exception("test failed");

        }

        ByteBuffer incomingdata = ByteBuffer.allocateDirect(10);

        int totalRead = 0;

        do {

            int bytesRead = source.read(incomingdata);

            if (bytesRead > 0)

                totalRead += bytesRead;

        } while(totalRead < 10);

        for(int i=0; i<10; i++)

            if (outgoingdata.get(i) != incomingdata.get(i))

                throw new Exception("Pipe failed");

        sink.close();

        source.close();

    }

}