1 /*
2 * Copyright (c) 1999, 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 * @library ..
27 * @bug 4103117 4331084 4488017 4490929 6255285 6268365 8074460
28 * @summary Tests the BigDecimal string constructor (use -Dseed=X to set PRNG seed).
29 * @key randomness
30 */
31
32 import java.math.*;
33
34 public class StringConstructor {
35
36 private static RandomSeed rndSeed = new RandomSeed(false);
37
38 public static void main(String[] args) throws Exception {
39 System.out.println("Random number generator seed = " + rndSeed.getSeed());
40
41 constructWithError("");
42 constructWithError("+");
43 constructWithError("-");
44 constructWithError("+e");
45 constructWithError("-e");
46 constructWithError("e+");
47 constructWithError("1.-0");
48 constructWithError(".-123");
49 constructWithError("-");
50 constructWithError("--1.1");
51 constructWithError("-+1.1");
52 constructWithError("+-1.1");
53 constructWithError("1-.1");
54 constructWithError("1+.1");
55 constructWithError("1.111+1");
56 constructWithError("1.111-1");
57 constructWithError("11.e+");
58 constructWithError("11.e-");
59 constructWithError("11.e+-");
60 constructWithError("11.e-+");
61 constructWithError("11.e-+1");
62 constructWithError("11.e+-1");
63
64 // Range checks
65 constructWithError("1e"+Integer.MIN_VALUE);
66 constructWithError("10e"+Integer.MIN_VALUE);
67 constructWithError("0.01e"+Integer.MIN_VALUE);
68 constructWithError("1e"+((long)Integer.MIN_VALUE-1));
69 constructWithError("1e"+((long)Integer.MAX_VALUE + 1));
70
71 leadingExponentZeroTest();
72 nonAsciiZeroTest();
73
74 // Roundtrip tests
75 for (int i=0; i<100; i++) {
76 int size = rndSeed.getRandom().nextInt(100) + 1;
77 BigInteger bi = new BigInteger(size, rndSeed.getRandom());
78 if (rndSeed.getRandom().nextBoolean())
79 bi = bi.negate();
80 int decimalLength = bi.toString().length();
81 int scale = rndSeed.getRandom().nextInt(decimalLength);
82 BigDecimal bd = new BigDecimal(bi, scale);
83 String bdString = bd.toString();
84 // System.err.println("bi" + bi.toString() + "\tscale " + scale);
85 // System.err.println("bd string: " + bdString);
86 BigDecimal bdDoppel = new BigDecimal(bdString);
87 if (!bd.equals(bdDoppel)) {
88 System.err.println("bd string: scale: " + bd.scale() +
89 "\t" + bdString);
90 System.err.println("bd doppel: scale: " + bdDoppel.scale() +
91 "\t" + bdDoppel.toString());
92 throw new RuntimeException("String constructor failure.");
93 }
94 }
95 }
96
97
98 /*
99 * Verify precision is set properly if the significand has
100 * non-ASCII leading zeros.
101 */
102 private static void nonAsciiZeroTest() {
103 String values[] = {
104 "00004e5",
105 "\u0660\u0660\u0660\u06604e5",
106 };
107
108 BigDecimal expected = new BigDecimal("4e5");
109
110 for(String s : values) {
111 BigDecimal tmp = new BigDecimal(s);
112 // System.err.println("Testing " + s);
113 if (! expected.equals(tmp) || tmp.precision() != 1) {
114 System.err.println("Bad conversion of " + s + "got " +
115 tmp + "precision = " + tmp.precision());
116 throw new RuntimeException("String constructor failure.");
117 }
118 }
119
120 }
121
122 private static void leadingExponentZeroTest() {
123 BigDecimal twelve = new BigDecimal("12");
124 BigDecimal onePointTwo = new BigDecimal("1.2");
125
126 String start = "1.2e0";
127 String end = "1";
128 String middle = "";
129
130 // Test with more excess zeros than the largest number of
131 // decimal digits needed to represent a long
132 int limit = ((int)Math.log10(Long.MAX_VALUE)) + 6;
133 for(int i = 0; i < limit; i++, middle += "0") {
134 String t1 = start + middle;
135 String t2 = t1 + end;
136
137 // System.out.println(i + "\t" + t1 + "\t" + t2);
138 testString(t1, onePointTwo);
139 testString(t2, twelve);
140 }
141 }
142
143 private static void testString(String s, BigDecimal expected) {
144 testString0(s, expected);
145 testString0(switchZero(s), expected);
146 }
147
148 private static void testString0(String s, BigDecimal expected) {
149 if (!expected.equals(new BigDecimal(s)))
150 throw new RuntimeException(s + " is not equal to " + expected);
151 }
152
153 private static String switchZero(String s) {
154 return s.replace('0', '\u0660'); // Arabic-Indic zero
155 }
156
157 private static void constructWithError(String badString) {
158 try {
159 BigDecimal d = new BigDecimal(badString);
160 throw new RuntimeException(badString + " accepted");
161 } catch(NumberFormatException e) {
162 }
163 }
164 }
--- EOF ---