124 lines
4.8 KiB
Java
124 lines
4.8 KiB
Java
/*
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* Copyright (c) 2007, 2023, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/*
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* @test
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* @bug 4122700 8282319
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* @summary Verify implementation of getAvailableLocales() and availableLocales()
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* @run junit AvailableLocalesTest
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*/
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import java.util.Arrays;
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import java.util.Locale;
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import java.util.stream.Stream;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.params.ParameterizedTest;
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import org.junit.jupiter.params.provider.MethodSource;
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import org.junit.jupiter.params.provider.Arguments;
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import static org.junit.jupiter.api.Assertions.assertNotEquals;
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public class AvailableLocalesTest {
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/**
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* Test that Locale.getAvailableLocales() is non-empty and prints out
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* the returned locales - 4122700.
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*/
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@Test
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public void nonEmptyLocalesTest() {
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Locale[] systemLocales = Locale.getAvailableLocales();
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assertNotEquals(systemLocales.length, 0, "Available locale list is empty!");
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System.out.println("Found " + systemLocales.length + " locales:");
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printLocales(systemLocales);
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}
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/**
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* Test to validate that the methods: Locale.getAvailableLocales()
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* and Locale.availableLocales() contain the same underlying elements
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*/
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@Test
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public void streamEqualsArrayTest() {
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Locale[] arrayLocales = Locale.getAvailableLocales();
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Stream<Locale> streamedLocales = Locale.availableLocales();
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Locale[] convertedLocales = streamedLocales.toArray(Locale[]::new);
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if (Arrays.equals(arrayLocales, convertedLocales)) {
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System.out.println("$$$ Passed: The underlying elements" +
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" of getAvailableLocales() and availableLocales() are the same!");
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} else {
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throw new RuntimeException("$$$ Error: The underlying elements" +
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" of getAvailableLocales() and availableLocales()" +
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" are not the same.");
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}
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}
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/**
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* Test to validate that the stream has the required
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* Locale.ROOT and Locale.US.
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*/
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@ParameterizedTest
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@MethodSource("requiredLocaleProvider")
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public void requiredLocalesTest(Locale requiredLocale, String localeName) {
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if (Locale.availableLocales().anyMatch(loc -> (loc.equals(requiredLocale)))) {
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System.out.printf("$$$ Passed: Stream has %s!%n", localeName);
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} else {
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throw new RuntimeException(String.format("$$$ Error:" +
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" Stream is missing %s!", localeName));
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}
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}
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// Helper method to print out all the system locales
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private void printLocales(Locale[] systemLocales) {
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Locale[] locales = new Locale[systemLocales.length];
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for (int i = 0; i < locales.length; i++) {
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Locale lowest = null;
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for (Locale systemLocale : systemLocales) {
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if (i > 0 && locales[i - 1].toString().compareTo(systemLocale.toString()) >= 0)
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continue;
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if (lowest == null || systemLocale.toString().compareTo(lowest.toString()) < 0)
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lowest = systemLocale;
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}
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locales[i] = lowest;
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}
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for (Locale locale : locales) {
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if (locale.getCountry().length() == 0)
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System.out.println(" " + locale.getDisplayLanguage() + ":");
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else {
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if (locale.getVariant().length() == 0)
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System.out.println(" " + locale.getDisplayCountry());
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else
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System.out.println(" " + locale.getDisplayCountry() + ", "
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+ locale.getDisplayVariant());
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}
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}
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}
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// Data provider for testStreamRequirements
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private static Stream<Arguments> requiredLocaleProvider() {
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return Stream.of(
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Arguments.of(Locale.ROOT, "Root locale"),
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Arguments.of(Locale.US, "US locale")
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);
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}
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}
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