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 }