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
|
/*
* Copyright (c) 2015, 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
* @bug 8138824
* @summary Test expected equalsIgnoreCase behavior for some known asymmetric case mappings
*/
public class EqualsIgnoreCase {
private static final String SMALL_I = "i";
private static final String CAPITAL_I = "I";
// Characters that do not map symmetrically between upper/lower case
private static final String SMALL_DOTLESS_I = "\u0131";
private static final String CAPITAL_I_WITH_DOT = "\u0130";
private static final String LOWER_GREEK_THETA = "\u03D1";
private static final String CAPITAL_GREEK_THETA = "\u03F4";
public static void main(String[] args) {
compareFuncs(SMALL_I, CAPITAL_I, true, true);
compareFuncs(CAPITAL_I_WITH_DOT, SMALL_DOTLESS_I, true, false);
compareFuncs(LOWER_GREEK_THETA, CAPITAL_GREEK_THETA, true, false);
}
/**
* Compare the actual results of equalsIgnoreCase():
* toUpperCase(toLowerCase(eachChar))
* to the behavior described in the equalsIgnoreCase() spec prior to 8138824:
* toUpperCase(eachChar)
* toLowerCase(eachChar)
*
* @param s1 A string
* @param s2 Another string
* @param expectEquals Expected result of equalsIgnoreCase()
* @param expectTuTl Expected result of toUpperToLowerOriginals()
*/
private static void compareFuncs(String s1, String s2, boolean expectEquals, boolean expectTuTl) {
System.out.println(s1 + ", " + s2);
boolean equalsResult = s1.equalsIgnoreCase(s2);
System.out.println("equalsIgnoreCase:" + equalsResult);
boolean tuTlResult = toUpperToLowerOriginals(s1, s2);
System.out.println("tUtLO:" + tuTlResult);
boolean failed = false;
if (equalsResult != expectEquals) {
System.out.println("Expected " + expectEquals + " from equalsIgnoreCase() but got " + equalsResult);
failed = true;
}
if (tuTlResult != expectTuTl) {
System.out.println("Expected " + expectTuTl + " from toUpperToLowerOriginals() but got " + tuTlResult);
failed = true;
}
if (failed) { throw new RuntimeException("Test Failed"); }
}
/**
* Apply toUpperCase() and toLowerCase() to corresponding chars of both
* Strings. Returns true if each pair of corresponding chars are either:
* 1. == after both are converted to upper case
* or
* 2. == after both are converted to lower case
* and the String lengths are equal.
*/
private static boolean toUpperToLowerOriginals(String str1, String str2) {
if (str1.length() != str2.length()) { return false; }
for (int i = 0; i < str1.length(); i++) {
char c1 = str1.charAt(i);
char c2 = str2.charAt(i);
char uc1 = Character.toUpperCase(c1);
char uc2 = Character.toUpperCase(c2);
boolean upperMatch = uc1 == uc2;
char lc1 = Character.toLowerCase(c1);
char lc2 = Character.toLowerCase(c2);
boolean lowerMatch = lc1 == lc2;
if (!(upperMatch || lowerMatch)) {
return false;
}
}
return true;
}
}
|
