| /* |
| * Copyright (c) 1997, 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 4017196 |
| @summary Test for correct implementation of PushbackInputStream.skip |
| */ |
| |
| import java.io.*; |
| |
| public class Skip { |
| |
| private static void dotest(PushbackInputStream in, int expected) |
| throws Exception |
| { |
| int one, two, last, got; |
| |
| in.unread(4); |
| in.unread(5); |
| in.unread(6); |
| in.skip(2); |
| if (in.read() != 4) { |
| throw new Exception("Failed the n < pushed back bytes case"); |
| } |
| System.err.println("Passed the n < pushed back bytes case"); |
| one = in.read(); |
| two = in.read(); |
| |
| if (two == 7) { |
| in.unread(two); |
| two = 0; |
| } |
| in.skip(2); |
| last = in.read(); |
| got = (one + two + last); |
| System.err.println("Expected " + expected + " got " + got); |
| if (expected != got) { |
| throw new Exception("Expected " + expected + " got " + got); |
| } |
| } |
| |
| |
| public static void main(String args[]) throws Exception { |
| byte[] data1 = {1, 7, 1, 0, 4}; |
| byte[] data2 = {1, 1, 1, 1, 5}; |
| byte[] data3 = {1, 7, 1, 3, 6}; |
| PushbackInputStream in; |
| |
| in = new PushbackInputStream(new ByteArrayInputStream(data1), 3); |
| dotest(in, 1); |
| in = new PushbackInputStream(new ByteArrayInputStream(data2), 3); |
| dotest(in, 7); |
| in = new PushbackInputStream(new ByteArrayInputStream(data3), 3); |
| dotest(in, 4); |
| } |
| |
| } |