J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2001 Sun Microsystems, Inc. All Rights Reserved. |
| 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 | * |
| 5 | * This code is free software; you can redistribute it and/or modify it |
| 6 | * under the terms of the GNU General Public License version 2 only, as |
| 7 | * published by the Free Software Foundation. |
| 8 | * |
| 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
| 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| 12 | * version 2 for more details (a copy is included in the LICENSE file that |
| 13 | * accompanied this code). |
| 14 | * |
| 15 | * You should have received a copy of the GNU General Public License version |
| 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
| 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| 18 | * |
| 19 | * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, |
| 20 | * CA 95054 USA or visit www.sun.com if you need additional information or |
| 21 | * have any questions. |
| 22 | */ |
| 23 | |
| 24 | /* @test |
| 25 | @bug 4526350 |
| 26 | @summary Verify IOUtil.java reads to buffer limits |
| 27 | */ |
| 28 | import java.io.*; |
| 29 | import java.nio.*; |
| 30 | import java.nio.channels.*; |
| 31 | |
| 32 | public class ReadToLimit { |
| 33 | public static void main(String[] args) throws Exception { |
| 34 | File blah = File.createTempFile("blah", null); |
| 35 | blah.deleteOnExit(); |
| 36 | initTestFile(blah); |
| 37 | |
| 38 | ByteBuffer[] dstBuffers = new ByteBuffer[2]; |
| 39 | for(int i=0; i<2; i++) { |
| 40 | dstBuffers[i] = ByteBuffer.allocateDirect(10); |
| 41 | dstBuffers[i].limit(5); |
| 42 | } |
| 43 | FileInputStream fis = new FileInputStream(blah); |
| 44 | FileChannel fc = fis.getChannel(); |
| 45 | long bytesRead = fc.read(dstBuffers); |
| 46 | for(int i=0; i<2; i++) |
| 47 | if (dstBuffers[i].position() != 5) |
| 48 | throw new Exception("Test failed"); |
| 49 | fc.close(); |
| 50 | fis.close(); |
| 51 | } |
| 52 | |
| 53 | /** |
| 54 | * Creates file blah: |
| 55 | * 0000 |
| 56 | * 0001 |
| 57 | * 0002 |
| 58 | * 0003 |
| 59 | */ |
| 60 | private static void initTestFile(File blah) throws Exception { |
| 61 | FileOutputStream fos = new FileOutputStream(blah); |
| 62 | BufferedWriter awriter |
| 63 | = new BufferedWriter(new OutputStreamWriter(fos, "8859_1")); |
| 64 | |
| 65 | for(int i=0; i<4; i++) { |
| 66 | String number = new Integer(i).toString(); |
| 67 | for (int h=0; h<4-number.length(); h++) |
| 68 | awriter.write("0"); |
| 69 | awriter.write(""+i); |
| 70 | awriter.newLine(); |
| 71 | } |
| 72 | awriter.flush(); |
| 73 | awriter.close(); |
| 74 | } |
| 75 | } |