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/* offsetSingleBuffer.java -- Test writing offset from a single direct buffer
Copyright (C) 2006 Michael Barker
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, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301 USA.
*/
// Tags: JDK14
package gnu.testlet.java.nio.channels.FileChannel;
import gnu.testlet.TestHarness;
import gnu.testlet.Testlet;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.nio.channels.FileChannel;
import java.util.Arrays;
/**
* @author mike
*
*/
public class offsetSingleDirectBuffer implements Testlet
{
/* (non-Javadoc)
* @see gnu.testlet.Testlet#test(gnu.testlet.TestHarness)
*/
public void test(TestHarness harness)
{
try
{
byte[] data = "qwertyuiopasdfghjklzxcvbnm".getBytes("UTF-8");
ByteBuffer out = ByteBuffer.allocateDirect(50);
out.put(data);
out.flip();
out.position(5);
ByteBuffer in = ByteBuffer.allocateDirect(50);
String tmpfile = harness.getTempDirectory() + File.separator
+ "mauve-offset-single-direct-buffer.tmp";
File f = new File(tmpfile);
FileOutputStream fOut = new FileOutputStream(f);
FileChannel fc = fOut.getChannel();
int numBytes = fc.write(out);
harness.check(numBytes, data.length - 5, "Number of bytes written");
fc.close();
harness.check(f.length(), data.length - 5, "Resulting File size");
in.position(5);
FileInputStream fIn = new FileInputStream(f);
FileChannel fcIn = fIn.getChannel();
int numRead = fcIn.read(in);
harness.check(numRead, data.length - 5, "Number of bytes read");
harness.check(in.position(), data.length, "Buffer position");
byte[] oldData = new byte[data.length - 5];
System.arraycopy(data, 5, oldData, 0, 21);
byte[] newData = new byte[data.length - 5];
in.flip();
in.position(5);
in.get(newData);
harness.check(Arrays.equals(newData, oldData), "File content");
fcIn.close();
f.delete();
}
catch (UnsupportedEncodingException e1)
{
harness.fail("Unsupported Encoding");
}
catch (SecurityException e)
{
harness.fail("Unexpected exception: " + e);
}
catch (FileNotFoundException e)
{
harness.fail("Unexpected exception: " + e);
}
catch (IOException e)
{
harness.fail("Unexpected exception: " + e);
}
}
}
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