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/*
* 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
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
@bug 4526350
@summary Verify IOUtil.java reads to buffer limits
*/
import java.io.*;
import java.nio.*;
import java.nio.channels.*;
public class ReadToLimit {
public static void main(String[] args) throws Exception {
File blah = File.createTempFile("blah", null);
blah.deleteOnExit();
initTestFile(blah);
ByteBuffer[] dstBuffers = new ByteBuffer[2];
for(int i=0; i<2; i++) {
dstBuffers[i] = ByteBuffer.allocateDirect(10);
dstBuffers[i].limit(5);
}
FileInputStream fis = new FileInputStream(blah);
FileChannel fc = fis.getChannel();
long bytesRead = fc.read(dstBuffers);
for(int i=0; i<2; i++)
if (dstBuffers[i].position() != 5)
throw new Exception("Test failed");
fc.close();
fis.close();
blah.delete();
}
/**
* Creates file blah:
* 0000
* 0001
* 0002
* 0003
*/
private static void initTestFile(File blah) throws Exception {
FileOutputStream fos = new FileOutputStream(blah);
BufferedWriter awriter
= new BufferedWriter(new OutputStreamWriter(fos, "8859_1"));
for(int i=0; i<4; i++) {
String number = new Integer(i).toString();
for (int h=0; h<4-number.length(); h++)
awriter.write("0");
awriter.write(""+i);
awriter.newLine();
}
awriter.flush();
awriter.close();
}
}
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