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// Tags: JDK1.4
// Copyright (C) 2005 Jeroen Frijters
// This file is part of Mauve.
// Mauve is free software; you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation; either version 2, or (at your option)
// any later version.
// Mauve 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 for more details.
// You should have received a copy of the GNU General Public License
// along with Mauve; see the file COPYING. If not, write to
// the Free Software Foundation, 59 Temple Place - Suite 330,
// Boston, MA 02111-1307, USA. */
package gnu.testlet.java.nio.channels.FileChannel;
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
import gnu.testlet.Testlet;
import gnu.testlet.TestHarness;
public class map implements Testlet
{
private static final byte[] msg = "Hello, World!".getBytes();
public void test(TestHarness harness)
{
String filename = null;
try
{
filename = harness.getTempDirectory() + File.separator + "mauvemap.txt";
FileOutputStream fos = new FileOutputStream(filename);
FileChannel chan = fos.getChannel();
try
{
chan.map(FileChannel.MapMode.READ_WRITE, 0, msg.length);
harness.check(false);
}
catch(NonReadableChannelException x)
{
harness.check(true);
}
fos.close();
RandomAccessFile ras = new RandomAccessFile(filename, "rw");
chan = ras.getChannel();
MappedByteBuffer mbb = chan.map(FileChannel.MapMode.READ_WRITE, 0, msg.length);
mbb.put(msg);
mbb.force();
verifyContent(harness, filename);
MappedByteBuffer mbb2 = chan.map(FileChannel.MapMode.PRIVATE, 0, msg.length);
mbb2.put(new byte[msg.length]);
boolean ok = true;
for (int i = 0; i < msg.length; i++)
ok &= mbb2.get(i) == 0;
harness.check(ok);
mbb.force();
ras.close();
verifyContent(harness, filename);
}
catch(Exception x)
{
harness.debug(x);
harness.check(false);
}
finally
{
// delete the work file and check if deletion were successfull
if (filename != null)
{
harness.check(new File(filename).delete());
}
}
}
private void verifyContent(TestHarness harness, String filename) throws IOException
{
FileInputStream fis = new FileInputStream(filename);
FileChannel chan = fis.getChannel();
MappedByteBuffer mbb = chan.map(FileChannel.MapMode.READ_ONLY, 0, msg.length);
byte[] buf = new byte[msg.length];
mbb.get(buf);
boolean ok = true;
for (int i = 0; i < msg.length; i++)
ok &= msg[i] == buf[i];
harness.check(ok);
fis.close();
}
}
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