1/* 2 * Copyright (c) 2005, Oracle and/or its affiliates. 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* @test 25 * @bug 6336960 26 * @summary Validate that GZIPInputStream.readUByte throws the correct 27 * exception when read() on the InputStream with which the GZIPInputStream was 28 * created returns an out-of-bounds value. 29 */ 30 31import java.io.*; 32import java.util.zip.GZIPInputStream; 33 34public class ReadUByte { 35 /** Guaranteed to return a value that is out-of-spec for read(). */ 36 static class BrokenInputStream extends ByteArrayInputStream { 37 BrokenInputStream() { 38 super(new byte[16]); 39 } 40 41 public int read() { 42 return -33; 43 } 44 } 45 46 public static void realMain(String[] args) throws Throwable { 47 try { 48 new GZIPInputStream(new BrokenInputStream()); 49 fail("Failed to throw expected IOException"); 50 } catch (IOException ex) { 51 String msg = ex.getMessage(); 52 if (msg.indexOf("ReadUByte$BrokenInputStream.read() returned value out of range") < 0) { 53 fail("IOException contains incorrect message: '" + msg + "'"); 54 } 55 } 56 } 57 58 //--------------------- Infrastructure --------------------------- 59 static volatile int passed = 0, failed = 0; 60 static void pass() {passed++;} 61 static void fail() {failed++; Thread.dumpStack();} 62 static void fail(String msg) {System.out.println(msg); fail();} 63 static void unexpected(Throwable t) {failed++; t.printStackTrace();} 64 static void check(boolean cond) {if (cond) pass(); else fail();} 65 static void equal(Object x, Object y) { 66 if (x == null ? y == null : x.equals(y)) pass(); 67 else fail(x + " not equal to " + y);} 68 public static void main(String[] args) throws Throwable { 69 try {realMain(args);} catch (Throwable t) {unexpected(t);} 70 System.out.println("\nPassed = " + passed + " failed = " + failed); 71 if (failed > 0) throw new AssertionError("Some tests failed");} 72} 73