1/* 2 * Copyright (c) 2008, 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 6196991 26 * @summary Roundtrip Encoding/Decoding of just one ASCII char 27 * @author Martin Buchholz 28 */ 29 30import java.util.*; 31import java.nio.*; 32import java.nio.charset.*; 33 34public class FindASCIICodingBugs { 35 private static int failures = 0; 36 37 private static void check(boolean condition) { 38 if (! condition) { 39 new Error("test failed").printStackTrace(); 40 failures++; 41 } 42 } 43 44 private static boolean equals(byte[] ba, ByteBuffer bb) { 45 if (ba.length != bb.limit()) 46 return false; 47 for (int i = 0; i < ba.length; i++) 48 if (ba[i] != bb.get(i)) 49 return false; 50 return true; 51 } 52 53 public static void main(String[] args) throws Exception { 54 for (Map.Entry<String,Charset> e 55 : Charset.availableCharsets().entrySet()) { 56 String csn = e.getKey(); 57 Charset cs = e.getValue(); 58 59 // Delete the following lines when these charsets are fixed! 60 if (csn.equals("x-JIS0208")) continue; // MalformedInput 61 if (csn.equals("JIS_X0212-1990")) continue; // MalformedInput 62 63 if (! cs.canEncode()) continue; 64 65 CharsetEncoder enc = cs.newEncoder(); 66 CharsetDecoder dec = cs.newDecoder(); 67 68 if (! enc.canEncode('A')) continue; 69 70 System.out.println(csn); 71 72 try { 73 byte[] bytes1 = "A".getBytes(csn); 74 ByteBuffer bb = enc.encode(CharBuffer.wrap(new char[]{'A'})); 75 76 check(equals(bytes1, bb)); 77 check(new String(bytes1, csn).equals("A")); 78 79 CharBuffer cb = dec.decode(bb); 80 check(cb.toString().equals("A")); 81 } catch (Throwable t) { 82 t.printStackTrace(); 83 failures++; 84 } 85 } 86 87 if (failures > 0) 88 throw new Exception(failures + "tests failed"); 89 } 90} 91