1 /*
   2  * Copyright 1998-2007 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
  20  * CA 95054 USA or visit www.sun.com if you need additional information or
  21  * have any questions.
  22  */
  23 
  24 /*
  25  * @test
  26  * @bug 4136371 5017980 6576055
  27  * @summary Test Short.decode method
  28  * @author madbot
  29  * @author Joseph D. Darcy
  30  */
  31 
  32 /**
  33  * There are six methods in java.lang.Short which transform strings
  34  * into a short or Short value:
  35  *
  36  * public Short(String s)
  37  * public static Short decode(String nm)
  38  * public static short parseShort(String s, int radix)
  39  * public static short parseShort(String s)
  40  * public static Short valueOf(String s, int radix)
  41  * public static Short valueOf(String s)
  42  *
  43  * However, of these only decode has a nontrivial implementation
  44  * in that class.
  45  */
  46 public class Decode {
  47 
  48     private static void check(String ashort, short expected) {
  49         short sh = (Short.decode(ashort)).shortValue();
  50         if (sh != expected)
  51             throw new RuntimeException("Short.decode failed. String:" +
  52                                                 ashort + " Result:" + sh);
  53     }
  54 
  55     private static void checkFailure(String val, String message) {
  56         try {
  57             short n = (Short.decode(val)).shortValue();
  58             throw new RuntimeException(message);
  59         } catch (NumberFormatException e) { /* Okay */}
  60     }
  61 
  62     public static void main(String[] args) throws Exception {
  63         check(new String(""+Short.MIN_VALUE), Short.MIN_VALUE);
  64         check(new String(""+Short.MAX_VALUE), Short.MAX_VALUE);
  65 
  66         check("10",   (short)10);
  67         check("0x10", (short)16);
  68         check("0X10", (short)16);
  69         check("010",  (short)8);
  70         check("#10",  (short)16);
  71 
  72         check("+10",   (short)10);
  73         check("+0x10", (short)16);
  74         check("+0X10", (short)16);
  75         check("+010",  (short)8);
  76         check("+#10",  (short)16);
  77 
  78         check("-10",   (short)-10);
  79         check("-0x10", (short)-16);
  80         check("-0X10", (short)-16);
  81         check("-010",  (short)-8);
  82         check("-#10",  (short)-16);
  83 
  84         check(Integer.toString((int)Short.MIN_VALUE), Short.MIN_VALUE);
  85         check(Integer.toString((int)Short.MAX_VALUE), Short.MAX_VALUE);
  86 
  87         checkFailure("0x-10",   "Short.decode allows negative sign in wrong position.");
  88         checkFailure("0x+10",   "Short.decode allows positive sign in wrong position.");
  89 
  90         checkFailure("+",       "Raw plus sign allowed.");
  91         checkFailure("-",       "Raw minus sign allowed.");
  92 
  93         checkFailure(Integer.toString((int)Short.MIN_VALUE - 1), "Out of range");
  94         checkFailure(Integer.toString((int)Short.MAX_VALUE + 1), "Out of range");
  95 
  96         checkFailure("", "Empty String");
  97     }
  98 }