J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 1997 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 4017196 |
| 26 | @summary Test for correct implementation of PushbackInputStream.skip |
| 27 | */ |
| 28 | |
| 29 | import java.io.*; |
| 30 | |
| 31 | public class Skip { |
| 32 | |
| 33 | private static void dotest(PushbackInputStream in, int expected) |
| 34 | throws Exception |
| 35 | { |
| 36 | int one, two, last, got; |
| 37 | |
| 38 | in.unread(4); |
| 39 | in.unread(5); |
| 40 | in.unread(6); |
| 41 | in.skip(2); |
| 42 | if (in.read() != 4) { |
| 43 | throw new Exception("Failed the n < pushed back bytes case"); |
| 44 | } |
| 45 | System.err.println("Passed the n < pushed back bytes case"); |
| 46 | one = in.read(); |
| 47 | two = in.read(); |
| 48 | |
| 49 | if (two == 7) { |
| 50 | in.unread(two); |
| 51 | two = 0; |
| 52 | } |
| 53 | in.skip(2); |
| 54 | last = in.read(); |
| 55 | got = (one + two + last); |
| 56 | System.err.println("Expected " + expected + " got " + got); |
| 57 | if (expected != got) { |
| 58 | throw new Exception("Expected " + expected + " got " + got); |
| 59 | } |
| 60 | } |
| 61 | |
| 62 | |
| 63 | public static void main(String args[]) throws Exception { |
| 64 | byte[] data1 = {1, 7, 1, 0, 4}; |
| 65 | byte[] data2 = {1, 1, 1, 1, 5}; |
| 66 | byte[] data3 = {1, 7, 1, 3, 6}; |
| 67 | PushbackInputStream in; |
| 68 | |
| 69 | in = new PushbackInputStream(new ByteArrayInputStream(data1), 3); |
| 70 | dotest(in, 1); |
| 71 | in = new PushbackInputStream(new ByteArrayInputStream(data2), 3); |
| 72 | dotest(in, 7); |
| 73 | in = new PushbackInputStream(new ByteArrayInputStream(data3), 3); |
| 74 | dotest(in, 4); |
| 75 | } |
| 76 | |
| 77 | } |