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 * @test
25 * @bug 8177552
26 * @summary Checks the equals and hashCode method of CompactNumberFormat
27 * @modules jdk.localedata
28 */
29
30 import java.text.CompactNumberFormat;
31 import java.text.DecimalFormatSymbols;
32 import java.text.NumberFormat;
33 import java.util.Locale;
34
35 public class EqualityCheck {
36
37 public static void main(String[] args) {
38 testEquality();
39 testHashCode();
40 testEqualsAndHashCode();
41 }
42
43 private static void testEquality() {
44 CompactNumberFormat cnf1 = (CompactNumberFormat) NumberFormat
45 .getCompactNumberInstance(Locale.US, NumberFormat.Style.SHORT);
46
47 CompactNumberFormat cnf2 = (CompactNumberFormat) NumberFormat
48 .getCompactNumberInstance(Locale.US, NumberFormat.Style.SHORT);
49
50 // taking a custom compact instance with the same state as
51 // compact number instance of "en_US" locale with SHORT style
52 CompactNumberFormat cnf3 = new CompactNumberFormat("#,##0.###",
53 DecimalFormatSymbols.getInstance(Locale.US), new String[]{"", "",
54 "", "0K", "00K", "000K", "0M", "00M", "000M", "0B", "00B", "000B",
55 "0T", "00T", "000T"});
56
57 // checking reflexivity
58 if (!cnf1.equals(cnf1)) {
59 throw new RuntimeException("[testEquality() reflexivity FAILED: The compared"
60 + " objects must be equal]");
61 }
62
63 if (!cnf1.equals(cnf2)) {
64 throw new RuntimeException("[testEquality() FAILED: The compared"
65 + " objects must be equal]");
66 }
67
68 // checking symmetry, checking equality of two same objects
69 if (!cnf1.equals(cnf2) || !cnf2.equals(cnf1)) {
70 throw new RuntimeException("[testEquality() symmetry FAILED: The compared"
71 + " objects must be equal]");
72 }
73
74 // checking transitivity, three objects must be equal
75 if (!cnf1.equals(cnf2) || !cnf2.equals(cnf3) || !cnf1.equals(cnf3)) {
76 throw new RuntimeException("[testEquality() transitivity FAILED: The compared"
77 + " objects must be equal]");
78 }
79
80 // changing the min integer digits of first object; objects must not
81 // be equal
82 cnf1.setMinimumIntegerDigits(5);
83 checkEquals(cnf1, cnf2, false);
84
85 // changing the min integer digits of second object; objects must
86 // be equal
87 cnf2.setMinimumIntegerDigits(5);
88 checkEquals(cnf1, cnf2, true);
89
90 // changing the grouping size of first object; objects must not
91 // be equal
92 cnf1.setGroupingSize(4);
93 checkEquals(cnf1, cnf2, false);
94
95 // changing the grouping size if second object; objects must be equal
96 cnf2.setGroupingSize(4);
97 checkEquals(cnf1, cnf2, true);
98
99 // changing the parseBigDecimal of first object; objects must not
100 // be equal
101 cnf1.setParseBigDecimal(true);
102 checkEquals(cnf1, cnf2, false);
103
104 }
105
106 private static void checkEquals(CompactNumberFormat cnf1,
107 CompactNumberFormat cnf2, boolean mustEqual) {
108 if (cnf1.equals(cnf2) != mustEqual) {
109 if (mustEqual) {
110 throw new RuntimeException("[testEquality() FAILED: The compared"
111 + " objects must be equal]");
112 } else {
113 throw new RuntimeException("[testEquality() FAILED: The compared"
114 + " objects must not be equal]");
115 }
116 }
117 }
118
119 private static void testHashCode() {
120 NumberFormat cnf1 = NumberFormat
121 .getCompactNumberInstance(Locale.JAPAN, NumberFormat.Style.SHORT);
122 NumberFormat cnf2 = NumberFormat
123 .getCompactNumberInstance(Locale.JAPAN, NumberFormat.Style.SHORT);
124
125 if (cnf1.hashCode() != cnf2.hashCode()) {
126 throw new RuntimeException("[testHashCode() FAILED: hashCode of the"
127 + " compared objects must match]");
128 }
129 }
130
131 // test the property of equals and hashCode i.e. two equal object must
132 // always have the same hashCode
133 private static void testEqualsAndHashCode() {
134 NumberFormat cnf1 = NumberFormat
135 .getCompactNumberInstance(new Locale("hi", "IN"), NumberFormat.Style.SHORT);
136 cnf1.setMinimumIntegerDigits(5);
137 NumberFormat cnf2 = NumberFormat
138 .getCompactNumberInstance(new Locale("hi", "IN"), NumberFormat.Style.SHORT);
139 cnf2.setMinimumIntegerDigits(5);
140 if (cnf1.equals(cnf2)) {
141 if (cnf1.hashCode() != cnf2.hashCode()) {
142 throw new RuntimeException("[testEqualsAndHashCode() FAILED: two"
143 + " equal objects must have same hashCode]");
144 }
145 } else {
146 throw new RuntimeException("[testEqualsAndHashCode() FAILED: The"
147 + " compared objects must be equal]");
148 }
149 }
150
151 }
152