/*

 * Copyright (c) 2001, 2010, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

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 */

/* @test

   @bug 4462298

 * @summary Test FileChannel maps with different accesses

 * @run main/othervm Mode

 */

import java.nio.channels.*;

import java.nio.MappedByteBuffer;

import java.io.*;

public class Mode {

   private static File testFile;

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

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

        testFile.deleteOnExit();

        testReadable();

        testWritable();

   }

    private static void testReadable() throws IOException {

        FileInputStream is = new FileInputStream(testFile);

        FileChannel channel = is.getChannel();

        try {

            MappedByteBuffer buff = channel.map(FileChannel.MapMode.READ_WRITE,

                                                0, 8);

            throw new RuntimeException("Exception expected, none thrown");

        } catch (NonWritableChannelException e) {

            // correct result

        }

        is.close();

    }

    private static void testWritable() throws IOException {

        FileOutputStream is = new FileOutputStream(testFile);

        FileChannel channel = is.getChannel();

        try {

            MappedByteBuffer buff = channel.map(FileChannel.MapMode.READ_ONLY,

                                                0, 8);

            throw new RuntimeException("Exception expected, none thrown");

        } catch (NonReadableChannelException e) {

            // correct result

        }

        is.close();

    }

}