1 /*

     2  * Copyright (c) 1999, 2016, 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     (this test doesn't have an at-test tag because it's run by a shell

    26     script instead of directly by the test harness)

    27 */

    28 

    29 /*

    30  *

    31  *

    32  * (C) Copyright Taligent, Inc. 1996, 1997 - All Rights Reserved

    33  * (C) Copyright IBM Corp. 1996 - 1998 - All Rights Reserved

    34  *

    35  * Portions copyright (c) 2007 Sun Microsystems, Inc.

    36  * All Rights Reserved.

    37  *

    38  * The original version of this source code and documentation

    39  * is copyrighted and owned by Taligent, Inc., a wholly-owned

    40  * subsidiary of IBM. These materials are provided under terms

    41  * of a License Agreement between Taligent and Sun. This technology

    42  * is protected by multiple US and International patents.

    43  *

    44  * This notice and attribution to Taligent may not be removed.

    45  * Taligent is a registered trademark of Taligent, Inc.

    46  *

    47  * Permission to use, copy, modify, and distribute this software

    48  * and its documentation for NON-COMMERCIAL purposes and without

    49  * fee is hereby granted provided that this copyright notice

    50  * appears in all copies. Please refer to the file "copyright.html"

    51  * for further important copyright and licensing information.

    52  *

    53  * SUN MAKES NO REPRESENTATIONS OR WARRANTIES ABOUT THE SUITABILITY OF

    54  * THE SOFTWARE, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED

    55  * TO THE IMPLIED WARRANTIES OF MERCHANTABILITY, FITNESS FOR A

    56  * PARTICULAR PURPOSE, OR NON-INFRINGEMENT. SUN SHALL NOT BE LIABLE FOR

    57  * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR

    58  * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.

    59  *

    60  */

    61 package java.text;

    62 import sun.text.IntHashtable;

    63 

    64 

    65 /**

    66  * This class tests some internal hashCode() functions.

    67  * Bug #4170614 complained that we had two iternal classes that

    68  * break the invariant that if a.equals(b) than a.hashCode() ==

    69  * b.hashCode().  This is because these classes overrode equals()

    70  * but not hashCode().  These are both purely internal classes, and

    71  * the library itself doesn't actually call hashCode(), so this isn't

    72  * actually causing anyone problems yet.  But if these classes are

    73  * ever exposed in the API, their hashCode() methods need to work right.

    74  * PatternEntry will never be exposed in the API, but IntHashtable

    75  * might be.  This is a shell test to allow us to access classes that

    76  * are declared package private.

    77  * @author Richard Gillam

    78  */

    79 public class Bug4170614Test {

    80     public static void main(String[] args) throws Exception {

    81         testIntHashtable();

    82         testPatternEntry();

    83     }

    84 

    85 

    86     public static void testIntHashtable() throws Exception {

    87         IntHashtable fred = new IntHashtable();

    88         fred.put(1, 10);

    89         fred.put(2, 20);

    90         fred.put(3, 30);

    91 

    92         IntHashtable barney = new IntHashtable();

    93         barney.put(1, 10);

    94         barney.put(3, 30);

    95         barney.put(2, 20);

    96 

    97         IntHashtable homer = new IntHashtable();

    98         homer.put(3, 30);

    99         homer.put(1, 10);

   100         homer.put(7, 900);

   101 

   102         if (fred.equals(barney)) {

   103             System.out.println("fred.equals(barney)");

   104         }

   105         else {

   106             System.out.println("!fred.equals(barney)");

   107         }

   108         System.out.println("fred.hashCode() == " + fred.hashCode());

   109         System.out.println("barney.hashCode() == " + barney.hashCode());

   110 

   111         if (!fred.equals(barney)) {

   112             throw new Exception("equals() failed on two hashtables that are equal");

   113         }

   114 

   115         if (fred.hashCode() != barney.hashCode()) {

   116            throw new Exception("hashCode() failed on two hashtables that are equal");

   117         }

   118 

   119         System.out.println();

   120         if (fred.equals(homer)) {

   121             System.out.println("fred.equals(homer)");

   122         }

   123         else {

   124             System.out.println("!fred.equals(homer)");

   125         }

   126         System.out.println("fred.hashCode() == " + fred.hashCode());

   127         System.out.println("homer.hashCode() == " + homer.hashCode());

   128 

   129         if (fred.equals(homer)) {

   130             throw new Exception("equals() failed on two hashtables that are not equal");

   131         }

   132 

   133         if (fred.hashCode() == homer.hashCode()) {

   134             throw new Exception("hashCode() failed on two hashtables that are not equal");

   135         }

   136 

   137         System.out.println();

   138         System.out.println("testIntHashtable() passed.\n");

   139     }

   140 

   141     public static void testPatternEntry() throws Exception {

   142         PatternEntry fred = new PatternEntry(1,

   143                                              new StringBuffer("hello"),

   144                                              new StringBuffer("up"));

   145         PatternEntry barney = new PatternEntry(1,

   146                                                new StringBuffer("hello"),

   147                                                new StringBuffer("down"));

   148         // (equals() only considers the "chars" field, so fred and barney are equal)

   149         PatternEntry homer = new PatternEntry(1,

   150                                               new StringBuffer("goodbye"),

   151                                               new StringBuffer("up"));

   152 

   153         if (fred.equals(barney)) {

   154             System.out.println("fred.equals(barney)");

   155         }

   156         else {

   157             System.out.println("!fred.equals(barney)");

   158         }

   159         System.out.println("fred.hashCode() == " + fred.hashCode());

   160         System.out.println("barney.hashCode() == " + barney.hashCode());

   161 

   162         if (!fred.equals(barney)) {

   163             throw new Exception("equals() failed on two hashtables that are equal");

   164         }

   165 

   166         if (fred.hashCode() != barney.hashCode()) {

   167            throw new Exception("hashCode() failed on two hashtables that are equal");

   168         }

   169 

   170         System.out.println();

   171         if (fred.equals(homer)) {

   172             System.out.println("fred.equals(homer)");

   173         }

   174         else {

   175             System.out.println("!fred.equals(homer)");

   176         }

   177         System.out.println("fred.hashCode() == " + fred.hashCode());

   178         System.out.println("homer.hashCode() == " + homer.hashCode());

   179 

   180         if (fred.equals(homer)) {

   181             throw new Exception("equals() failed on two hashtables that are not equal");

   182         }

   183 

   184         if (fred.hashCode() == homer.hashCode()) {

   185             throw new Exception("hashCode() failed on two hashtables that are not equal");

   186         }

   187 

   188         System.out.println();

   189         System.out.println("testPatternEntry() passed.\n");

   190     }

   191 }