1 /*
   2  * Copyright (c) 2015, 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 8054307
  27     @summary test chars() and codePoints()
  28 */
  29 
  30 import java.util.Arrays;
  31 import java.util.Random;
  32 
  33 public class Chars {
  34 
  35     public static void main(String[] args) {
  36         Random r = new Random();
  37         for (int i = 0; i < 10; i++) {
  38             int n = 100 + r.nextInt(100);
  39             char[] cc = new char[n];
  40             int[]  ccExp = new int[n];
  41             int[]  cpExp = new int[n];
  42             // latin1
  43             for (int j = 0; j < n; j++) {
  44                 cc[j] = (char)(ccExp[j] = cpExp[j] = r.nextInt(0x80));
  45             }
  46             testChars(cc, ccExp);
  47             testCPs(cc, cpExp);
  48 
  49             // bmp without surrogates
  50             for (int j = 0; j < n; j++) {
  51                 cc[j] = (char)(ccExp[j] = cpExp[j] = r.nextInt(0x8000));
  52             }
  53             testChars(cc, ccExp);
  54             testCPs(cc, cpExp);
  55 
  56             // bmp with surrogates
  57             int k = 0;
  58             for (int j = 0; j < n; j++) {
  59                 if (j % 9 ==  5 && j + 1 < n) {
  60                     int cp = 0x10000 + r.nextInt(2000);
  61                     cpExp[k++] = cp;
  62                     Character.toChars(cp, cc, j);
  63                     ccExp[j] = cc[j];
  64                     ccExp[j + 1] = cc[j + 1];
  65                     j++;
  66                 } else {
  67                     cc[j] = (char)(ccExp[j] = cpExp[k++] = r.nextInt(0x8000));
  68                 }
  69             }
  70             cpExp = Arrays.copyOf(cpExp, k);
  71             testChars(cc, ccExp);
  72             testCPs(cc, cpExp);
  73         }
  74     }
  75 
  76     static void testChars(char[] cc, int[] expected) {
  77         String str = new String(cc);
  78         if (!Arrays.equals(expected, str.chars().toArray())) {
  79             throw new RuntimeException("chars/codePoints() failed!");
  80         }
  81     }
  82 
  83     static void testCPs(char[] cc, int[] expected) {
  84         String str = new String(cc);
  85         if (!Arrays.equals(expected, str.codePoints().toArray())) {
  86             throw new RuntimeException("chars/codePoints() failed!");
  87         }
  88     }
  89 }