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
|
/*
* Copyright (c) 2007, 2023, 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 4122700 8282319
* @summary Verify implementation of getAvailableLocales() and availableLocales()
* @run junit AvailableLocalesTest
*/
import java.util.Arrays;
import java.util.Locale;
import java.util.stream.Stream;
import org.junit.jupiter.api.Test;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.MethodSource;
import org.junit.jupiter.params.provider.Arguments;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
public class AvailableLocalesTest {
/**
* Test that Locale.getAvailableLocales() is non-empty and prints out
* the returned locales - 4122700.
*/
@Test
public void nonEmptyLocalesTest() {
Locale[] systemLocales = Locale.getAvailableLocales();
assertNotEquals(systemLocales.length, 0, "Available locale list is empty!");
System.out.println("Found " + systemLocales.length + " locales:");
printLocales(systemLocales);
}
/**
* Test to validate that the methods: Locale.getAvailableLocales()
* and Locale.availableLocales() contain the same underlying elements
*/
@Test
public void streamEqualsArrayTest() {
Locale[] arrayLocales = Locale.getAvailableLocales();
Stream<Locale> streamedLocales = Locale.availableLocales();
Locale[] convertedLocales = streamedLocales.toArray(Locale[]::new);
if (Arrays.equals(arrayLocales, convertedLocales)) {
System.out.println("$$$ Passed: The underlying elements" +
" of getAvailableLocales() and availableLocales() are the same!");
} else {
throw new RuntimeException("$$$ Error: The underlying elements" +
" of getAvailableLocales() and availableLocales()" +
" are not the same.");
}
}
/**
* Test to validate that the stream has the required
* Locale.ROOT and Locale.US.
*/
@ParameterizedTest
@MethodSource("requiredLocaleProvider")
public void requiredLocalesTest(Locale requiredLocale, String localeName) {
if (Locale.availableLocales().anyMatch(loc -> (loc.equals(requiredLocale)))) {
System.out.printf("$$$ Passed: Stream has %s!%n", localeName);
} else {
throw new RuntimeException(String.format("$$$ Error:" +
" Stream is missing %s!", localeName));
}
}
// Helper method to print out all the system locales
private void printLocales(Locale[] systemLocales) {
Locale[] locales = new Locale[systemLocales.length];
for (int i = 0; i < locales.length; i++) {
Locale lowest = null;
for (Locale systemLocale : systemLocales) {
if (i > 0 && locales[i - 1].toString().compareTo(systemLocale.toString()) >= 0)
continue;
if (lowest == null || systemLocale.toString().compareTo(lowest.toString()) < 0)
lowest = systemLocale;
}
locales[i] = lowest;
}
for (Locale locale : locales) {
if (locale.getCountry().length() == 0)
System.out.println(" " + locale.getDisplayLanguage() + ":");
else {
if (locale.getVariant().length() == 0)
System.out.println(" " + locale.getDisplayCountry());
else
System.out.println(" " + locale.getDisplayCountry() + ", "
+ locale.getDisplayVariant());
}
}
}
// Data provider for testStreamRequirements
private static Stream<Arguments> requiredLocaleProvider() {
return Stream.of(
Arguments.of(Locale.ROOT, "Root locale"),
Arguments.of(Locale.US, "US locale")
);
}
}
|
