test/jdk/java/lang/Character/Latin1Digit.java
changeset 48740 7d5826282e8d
equal deleted inserted replaced
48739:59bba47f435e 48740:7d5826282e8d
       
     1 /*
       
     2  * Copyright (c) 2018, 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 8196740
       
    27  * @summary Check j.l.Character.digit(int,int) for Latin1 characters
       
    28  */
       
    29 
       
    30 public class Latin1Digit {
       
    31 
       
    32     public static void main(String[] args) throws Exception {
       
    33         for (int ch = 0; ch < 256; ++ch) {
       
    34             for (int radix = -256; radix <= 256; ++radix) {
       
    35                 test(ch, radix);
       
    36             }
       
    37             test(ch, Integer.MIN_VALUE);
       
    38             test(ch, Integer.MAX_VALUE);
       
    39         }
       
    40     }
       
    41 
       
    42     static void test(int ch, int radix) throws Exception {
       
    43         int d1 = Character.digit(ch, radix);
       
    44         int d2 = canonicalDigit(ch, radix);
       
    45         if (d1 != d2) {
       
    46             throw new Exception("Wrong result for char="
       
    47                     + ch + " (" + (char)ch + "), radix="
       
    48                     + radix + "; " + d1 + " != " + d2);
       
    49         }
       
    50     }
       
    51 
       
    52     // canonical version of Character.digit(int,int) for Latin1
       
    53     static int canonicalDigit(int ch, int radix) {
       
    54         if (radix < Character.MIN_RADIX || radix > Character.MAX_RADIX) {
       
    55             return -1;
       
    56         }
       
    57         if (ch >= '0' && ch <= '9' && ch < (radix + '0')) {
       
    58             return ch - '0';
       
    59         }
       
    60         if (ch >= 'A' && ch <= 'Z' && ch < (radix + 'A' - 10)) {
       
    61             return ch - 'A' + 10;
       
    62         }
       
    63         if (ch >= 'a' && ch <= 'z' && ch < (radix + 'a' - 10)) {
       
    64             return ch - 'a' + 10;
       
    65         }
       
    66         return -1;
       
    67     }
       
    68 }