1 /*
   2  * Copyright (c) 1998, 2002, 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 4152868
  27  * @summary test Case Insensitive Comparator in String
  28  * @key randomness
  29  */
  30 
  31 import java.util.*;
  32 
  33 public class ICCBasher {
  34 
  35     static final int TEST_SIZE = 20;
  36     static final int STRING_SIZE = 5;
  37     static final int CHAR_VALUE_LIMIT = 128;
  38 
  39     public static void main(String[] args) throws Exception {
  40         LinkedList L1 = new LinkedList();
  41         LinkedList L2 = new LinkedList();
  42         LinkedList L3 = new LinkedList();
  43         LinkedList L4 = new LinkedList();
  44 
  45         // First generate L1 and L2 with random lower case chars
  46         //System.out.println("Generate L1 and L2");
  47         Random generator = new Random();
  48         int achar=0;
  49         StringBuffer entryBuffer = new StringBuffer(10);
  50         String snippet = null;
  51         for (int x=0; x<TEST_SIZE * 2; x++) {
  52             for(int y=0; y<STRING_SIZE; y++) {
  53                 achar = generator.nextInt(CHAR_VALUE_LIMIT);
  54                 char test = (char)(achar);
  55                 entryBuffer.append(test);
  56             }
  57             snippet = entryBuffer.toString();
  58             snippet.toLowerCase();
  59             if (x < TEST_SIZE)
  60                 L1.add(snippet);
  61             else
  62                 L2.add(snippet);
  63         }
  64 
  65         // Concatenate L1 and L2 to form L3
  66         //System.out.println("Generate L3");
  67         for (int x=0; x<TEST_SIZE; x++) {
  68             String entry = (String)L1.get(x) + (String)L2.get(x);
  69             L3.add(entry);
  70         }
  71 
  72         // Randomly toUpper L1 and L2
  73         //System.out.println("Modify L1 and L2");
  74         for (int x=0; x<TEST_SIZE; x++) {
  75             achar = generator.nextInt();
  76             if (achar > 0) {
  77                 String mod = (String)L1.get(x);
  78                 mod = mod.toUpperCase();
  79                 L1.set(x, mod);
  80             }
  81             achar = generator.nextInt();
  82             if (achar > 0) {
  83                 String mod = (String)L2.get(x);
  84                 mod = mod.toUpperCase();
  85                 L2.set(x, mod);
  86             }
  87         }
  88 
  89         // Concatenate L1 and L2 to form L4
  90         //System.out.println("Generate L4");
  91         for (int x=0; x<TEST_SIZE; x++) {
  92             String entry = (String)L1.get(x) + (String)L2.get(x);
  93             L4.add(entry);
  94         }
  95 
  96         // Sort L3 and L4 using case insensitive comparator
  97         //System.out.println("Sort L3 and L4");
  98         Collections.sort(L3, String.CASE_INSENSITIVE_ORDER);
  99         Collections.sort(L4, String.CASE_INSENSITIVE_ORDER);
 100 
 101         // Check to see that order of L3 and L4 are identical
 102         // ignoring case considerations
 103         //System.out.println("Check order of L3 and L4");
 104         for (int x=0; x<TEST_SIZE; x++) {
 105             String one = (String)L3.get(x);
 106             String two = (String)L4.get(x);
 107             if (!one.equalsIgnoreCase(two))
 108                 throw new RuntimeException("Case Insensitive Sort Failure.");
 109         }
 110 
 111     }
 112 }