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 4127657 |
| 27 | * @summary Check for correct handling of parameters to |
| 28 | * XXXXReader.read(b, off, len). |
| 29 | * |
| 30 | */ |
| 31 | |
| 32 | import java.io.*; |
| 33 | |
| 34 | public class ReadParams { |
| 35 | static int values[] = {Integer.MIN_VALUE, -1, 0, 1, 4, 16, 31, |
| 36 | 32, 33, Integer.MAX_VALUE}; |
| 37 | static char b[][] = {null, new char[32]}; |
| 38 | |
| 39 | static void test(Reader rdr) throws Exception { |
| 40 | int i = 0, j = 0, k = 0; |
| 41 | boolean nullPtr = false, indexOutBnd = false; |
| 42 | |
| 43 | for (i = 0; i < b.length; i++) { |
| 44 | for ( j = 0; j < values.length; j++) { |
| 45 | for ( k = 0; k < values.length; k++) { |
| 46 | |
| 47 | nullPtr = (b[i] == null); |
| 48 | |
| 49 | int bufLen = nullPtr ? 0 : b[i].length; |
| 50 | indexOutBnd = ((values[j] + values[k]) < 0) |
| 51 | ||(values[j] < 0) |
| 52 | || (values[j] > bufLen) |
| 53 | || (values[k] < 0) |
| 54 | || ((values[j] + values[k]) > bufLen); |
| 55 | |
| 56 | try { |
| 57 | rdr.read(b[i], values[j], values[k]); |
| 58 | } catch (NullPointerException e) { |
| 59 | if (!nullPtr) { |
| 60 | throw new Exception |
| 61 | ("should not throw NullPointerException" + i + " " +j + " " + k); |
| 62 | } |
| 63 | continue; |
| 64 | } catch (IndexOutOfBoundsException e) { |
| 65 | if (!indexOutBnd) { |
| 66 | throw new Exception |
| 67 | ("should not throw IndexOutOfBoundsException"); |
| 68 | } |
| 69 | continue; |
| 70 | } |
| 71 | |
| 72 | if (nullPtr || indexOutBnd) { |
| 73 | throw new Exception("Should have thrown an exception"); |
| 74 | } |
| 75 | } |
| 76 | } |
| 77 | } |
| 78 | } |
| 79 | |
| 80 | public static void main(String args[]) throws Exception{ |
| 81 | StringReader sr = new StringReader(new String(new byte[512])); |
| 82 | test(sr); |
| 83 | |
| 84 | test(new BufferedReader(sr)); |
| 85 | |
| 86 | test(new CharArrayReader(new char[8])); |
| 87 | |
| 88 | InputStreamReader ir = new InputStreamReader |
| 89 | (new ByteArrayInputStream(new byte[512])); |
| 90 | test(ir); |
| 91 | |
| 92 | test(new PushbackReader(sr, 2)); |
| 93 | |
| 94 | PipedWriter pw = new PipedWriter(); |
| 95 | PipedReader pir = new PipedReader(pw); |
| 96 | pw.write(new char[512], 0, 512); |
| 97 | test(pir); |
| 98 | } |
| 99 | } |