J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1998 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 | /* |
| 25 | * @test |
| 26 | * @bug 4054043 |
| 27 | * @summary Test bufferedinputstream when stream is interrupted |
| 28 | * |
| 29 | */ |
| 30 | |
| 31 | import java.io.*; |
| 32 | |
| 33 | /** |
| 34 | * This class tests to see if bufferinputstream updates count |
| 35 | * when the stream is interrupted and restarted |
| 36 | * It was adapted from a test class provided in the bug report |
| 37 | * |
| 38 | */ |
| 39 | |
| 40 | public class CountUpdate { |
| 41 | |
| 42 | public static void main(String[] args) throws Exception { |
| 43 | BufferBreaker breaker = new BufferBreaker(); |
| 44 | BufferedInputStream in = new BufferedInputStream(breaker, 1000); |
| 45 | |
| 46 | byte b[] = new byte[100]; |
| 47 | int total = 0; |
| 48 | |
| 49 | for (int i=0; i<5; i++) { |
| 50 | |
| 51 | if (i>0) breaker.breakIt = true; |
| 52 | try { |
| 53 | int n = in.read(b); |
| 54 | total += n; |
| 55 | //System.out.print("read "+n+" bytes: ["); |
| 56 | //System.out.write(b, 0, n); |
| 57 | //System.out.println("]"); |
| 58 | } |
| 59 | catch (IOException e) { |
| 60 | //System.out.println(e); |
| 61 | } |
| 62 | } |
| 63 | |
| 64 | if (total>7) |
| 65 | throw new RuntimeException( |
| 66 | "BufferedInputStream did not reset count."); |
| 67 | } |
| 68 | } |
| 69 | |
| 70 | class BufferBreaker extends InputStream { |
| 71 | public boolean breakIt = false; |
| 72 | |
| 73 | public int read() { |
| 74 | return 'x'; |
| 75 | } |
| 76 | |
| 77 | public static final byte[] buffer = {(byte)'a', |
| 78 | (byte)'b', |
| 79 | (byte)'c', |
| 80 | (byte)'d', |
| 81 | (byte)'e', |
| 82 | (byte)'f', |
| 83 | (byte)'g'}; |
| 84 | |
| 85 | public int read(byte b[]) throws IOException { |
| 86 | return read(b, 0, b.length); |
| 87 | } |
| 88 | |
| 89 | public int read(byte b[], int off, int len) throws IOException { |
| 90 | if (breakIt) throw new IOException("BREAK"); |
| 91 | if (len > buffer.length) len = buffer.length; |
| 92 | System.arraycopy(buffer, 0, b, off, len); |
| 93 | return len; |
| 94 | } |
| 95 | |
| 96 | public long skip(long n) { |
| 97 | return 0; |
| 98 | } |
| 99 | |
| 100 | public int available() { |
| 101 | return 0; |
| 102 | } |
| 103 | |
| 104 | } |