J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002 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 4398210 |
| 26 | * @summary check skip method after pushing data back |
| 27 | * |
| 28 | */ |
| 29 | |
| 30 | import java.io.*; |
| 31 | |
| 32 | public class Skip { |
| 33 | |
| 34 | public static void main(String args[]) throws Exception { |
| 35 | test1(); |
| 36 | } |
| 37 | |
| 38 | private static void test1() throws Exception { |
| 39 | char[] buf = new char[20]; |
| 40 | for (int i=0; i<20; i++) |
| 41 | buf[i] = (char)i; |
| 42 | CharArrayReader car = new CharArrayReader(buf); |
| 43 | PushbackReader pr = new PushbackReader(car, 10); |
| 44 | check(pr.read(), 0); |
| 45 | // Check skip without unread chars present |
| 46 | pr.skip(1); |
| 47 | check(pr.read(), 2); |
| 48 | pr.unread(2); |
| 49 | pr.unread(1); |
| 50 | // Check skip over and beyond unread chars |
| 51 | pr.skip(4); |
| 52 | check(pr.read(), 5); |
| 53 | check(pr.read(), 6); |
| 54 | pr.unread(6); |
| 55 | pr.unread(5); |
| 56 | // Check skip within unread chars |
| 57 | pr.skip(1); |
| 58 | check(pr.read(), 6); |
| 59 | check(pr.read(), 7); |
| 60 | // Check skip after unread chars have been used |
| 61 | pr.skip(3); |
| 62 | check(pr.read(), 11); |
| 63 | } |
| 64 | |
| 65 | private static void check (int i, int j) { |
| 66 | if (i != j) |
| 67 | throw new RuntimeException("Test failed"); |
| 68 | } |
| 69 | } |