1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
|
/*
* Copyright (c) 1999, 2017, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/*
* @test
* @library /test/lib
* @build jdk.test.lib.RandomFactory
* @run main StringConstructor
* @bug 4103117 4331084 4488017 4490929 6255285 6268365 8074460 8078672
* @summary Tests the BigDecimal string constructor (use -Dseed=X to set PRNG seed).
* @key randomness
*/
import java.math.*;
import java.util.Random;
import jdk.test.lib.RandomFactory;
public class StringConstructor {
public static void main(String[] args) throws Exception {
constructWithError("");
constructWithError("+");
constructWithError("-");
constructWithError("+e");
constructWithError("-e");
constructWithError("e+");
constructWithError("1.-0");
constructWithError(".-123");
constructWithError("-");
constructWithError("--1.1");
constructWithError("-+1.1");
constructWithError("+-1.1");
constructWithError("1-.1");
constructWithError("1+.1");
constructWithError("1.111+1");
constructWithError("1.111-1");
constructWithError("11.e+");
constructWithError("11.e-");
constructWithError("11.e+-");
constructWithError("11.e-+");
constructWithError("11.e-+1");
constructWithError("11.e+-1");
// Range checks
constructWithError("1e"+Integer.MIN_VALUE);
constructWithError("10e"+Integer.MIN_VALUE);
constructWithError("0.01e"+Integer.MIN_VALUE);
constructWithError("1e"+((long)Integer.MIN_VALUE-1));
constructWithError("1e"+((long)Integer.MAX_VALUE + 1));
leadingExponentZeroTest();
nonAsciiZeroTest();
// Roundtrip tests
Random random = RandomFactory.getRandom();
for (int i=0; i<100; i++) {
int size = random.nextInt(100) + 1;
BigInteger bi = new BigInteger(size, random);
if (random.nextBoolean())
bi = bi.negate();
int decimalLength = bi.toString().length();
int scale = random.nextInt(decimalLength);
BigDecimal bd = new BigDecimal(bi, scale);
String bdString = bd.toString();
// System.err.println("bi" + bi.toString() + "\tscale " + scale);
// System.err.println("bd string: " + bdString);
BigDecimal bdDoppel = new BigDecimal(bdString);
if (!bd.equals(bdDoppel)) {
System.err.println("bd string: scale: " + bd.scale() +
"\t" + bdString);
System.err.println("bd doppel: scale: " + bdDoppel.scale() +
"\t" + bdDoppel.toString());
throw new RuntimeException("String constructor failure.");
}
}
}
/*
* Verify precision is set properly if the significand has
* non-ASCII leading zeros.
*/
private static void nonAsciiZeroTest() {
String values[] = {
"00004e5",
"\u0660\u0660\u0660\u06604e5",
};
BigDecimal expected = new BigDecimal("4e5");
for(String s : values) {
BigDecimal tmp = new BigDecimal(s);
// System.err.println("Testing " + s);
if (! expected.equals(tmp) || tmp.precision() != 1) {
System.err.println("Bad conversion of " + s + "got " +
tmp + "precision = " + tmp.precision());
throw new RuntimeException("String constructor failure.");
}
}
}
private static void leadingExponentZeroTest() {
BigDecimal twelve = new BigDecimal("12");
BigDecimal onePointTwo = new BigDecimal("1.2");
String start = "1.2e0";
String end = "1";
String middle = "";
// Test with more excess zeros than the largest number of
// decimal digits needed to represent a long
int limit = ((int)Math.log10(Long.MAX_VALUE)) + 6;
for(int i = 0; i < limit; i++, middle += "0") {
String t1 = start + middle;
String t2 = t1 + end;
// System.out.println(i + "\t" + t1 + "\t" + t2);
testString(t1, onePointTwo);
testString(t2, twelve);
}
}
private static void testString(String s, BigDecimal expected) {
testString0(s, expected);
testString0(switchZero(s), expected);
}
private static void testString0(String s, BigDecimal expected) {
if (!expected.equals(new BigDecimal(s)))
throw new RuntimeException(s + " is not equal to " + expected);
}
private static String switchZero(String s) {
return s.replace('0', '\u0660'); // Arabic-Indic zero
}
private static void constructWithError(String badString) {
try {
BigDecimal d = new BigDecimal(badString);
throw new RuntimeException(badString + " accepted");
} catch(NumberFormatException e) {
}
}
}
|
