1/* 2 * Copyright (c) 1998, 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/* 25 * @test 26 * @bug 4127657 27 * @summary Check for correct handling of parameters to 28 * XXXXReader.read(b, off, len). 29 * 30 */ 31 32import java.io.*; 33 34public 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} 100