1 /*
   2  * Copyright (c) 2006, 2007, 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 5017980 6576055
  27  * @summary Test parsing methods
  28  * @author Joseph D. Darcy
  29  */
  30 
  31 import sun.misc.SharedSecrets;
  32 import sun.misc.JavaLangAccess;
  33 
  34 /**
  35  * There are six methods in java.lang.Long which transform strings
  36  * into a long or Long value:
  37  *
  38  * public Long(String s)
  39  * public static Long decode(String nm)
  40  * public static long parseLong(String s, int radix)
  41  * public static long parseLong(String s)
  42  * public static Long valueOf(String s, int radix)
  43  * public static Long valueOf(String s)
  44  *
  45  * Besides decode, all the methods and constructor call down into
  46  * parseLong(String, int) to do the actual work.  Therefore, the
  47  * behavior of parseLong(String, int) will be tested here.
  48  *
  49  * Internally, parseLong(String, int, int, int) has been added to
  50  * support parsing subsequences without explicit substrings. These will also
  51  * be tested here
  52  */
  53 
  54 public class ParsingTest {
  55 
  56     private static JavaLangAccess jla = SharedSecrets.getJavaLangAccess();
  57 
  58     public static void main(String... argv) {
  59         check("+100", +100L);
  60         check("-100", -100L);
  61 
  62         check("+0", 0L);
  63         check("-0", 0L);
  64         check("+00000", 0L);
  65         check("-00000", 0L);
  66 
  67         check("0", 0L);
  68         check("1", 1L);
  69         check("9", 9L);
  70 
  71         checkFailure("\u0000");
  72         checkFailure("\u002f");
  73         checkFailure("+");
  74         checkFailure("-");
  75         checkFailure("++");
  76         checkFailure("+-");
  77         checkFailure("-+");
  78         checkFailure("--");
  79         checkFailure("++100");
  80         checkFailure("--100");
  81         checkFailure("+-6");
  82         checkFailure("-+6");
  83         checkFailure("*100");
  84 
  85         check("test-00000", 0L, 4, 10);
  86         check("test-12345", -12345L, 4, 10);
  87         check("xx12345yy", 12345L, 2, 7);
  88         check("xx123456789012345yy", 123456789012345L, 2, 17);
  89 
  90         checkFailure("+00000", 0, 7);
  91         checkFailure("-00000", 0, 7);
  92         checkFailure("-00000", 6, 6);
  93         checkFailure("-00000", 6, 0);
  94         checkFailure("+-6", 0, 3);
  95     }
  96 
  97     private static void check(String val, long expected) {
  98         long n = Long.parseLong(val);
  99         if (n != expected)
 100             throw new RuntimeException("Long.parseLong failed. String:" +
 101                                        val + " Result:" + n);
 102     }
 103 
 104     private static void checkFailure(String val) {
 105         long n = 0L;
 106         try {
 107             n = Long.parseLong(val);
 108             System.err.println("parseLong(" + val + ") incorrectly returned " + n);
 109             throw new RuntimeException();
 110         } catch (NumberFormatException nfe) {
 111             ; // Expected
 112         }
 113     }
 114 
 115     private static void checkFailure(String val, int start, int end) {
 116         long n = 0L;
 117         try {
 118             n = jla.parseLong(val, 10, start, end);
 119             System.err.println("parseLong(" + val + ") incorrectly returned " + n);
 120             throw new RuntimeException();
 121         } catch (NumberFormatException nfe) {
 122             ; // Expected
 123         }
 124     }
 125 
 126     private static void check(String val, long expected, int start, int end) {
 127         long n = jla.parseLong(val, 10, start, end);
 128         if (n != expected)
 129             throw new RuntimeException("Long.parseLong failed. String:" +
 130                     val + " Result:" + n);
 131     }
 132 }