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/*
* Copyright (c) 2018, 2025, 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 8202088 8207152 8217609 8219890 8358819
* @summary Test the localized Japanese calendar names, such as
* the Reiwa Era names (May 1st. 2019-), or the Gan-nen text
* @modules jdk.localedata
* @run junit JapaneseCalendarNameTest
*/
import static java.util.Calendar.*;
import static java.util.Locale.*;
import java.text.DateFormat;
import java.text.ParseException;
import java.util.Calendar;
import java.util.Locale;
import java.util.stream.Stream;
import org.junit.jupiter.params.ParameterizedTest;
import org.junit.jupiter.params.provider.Arguments;
import org.junit.jupiter.params.provider.MethodSource;
import static org.junit.jupiter.api.Assertions.assertEquals;
public class JapaneseCalendarNameTest {
private static final Calendar c = new Calendar.Builder()
.setCalendarType("japanese")
.setFields(ERA, 5, YEAR, 1, MONTH, MAY, DAY_OF_MONTH, 1)
.build();
private static final Locale JAJPJP = Locale.of("ja", "JP", "JP");
private static final Locale JCAL = Locale.forLanguageTag("ja-u-ca-japanese");
private static Stream<Arguments> reiwaEraNames() {
return Stream.of(
// type, locale, name
Arguments.of(LONG, JAPAN, "令和"),
Arguments.of(LONG, US, "Reiwa"),
Arguments.of(LONG, CHINA, "令和"),
Arguments.of(SHORT, JAPAN, "令和"),
Arguments.of(SHORT, US, "Reiwa"),
Arguments.of(SHORT, CHINA, "令和")
);
}
@ParameterizedTest
@MethodSource("reiwaEraNames")
void testReiwaEraName(int type, Locale locale, String expected) {
assertEquals(expected, c.getDisplayName(ERA, type, locale));
}
private static Stream<Arguments> gannen() {
return Stream.of(
// format,
// formatted text
Arguments.of(DateFormat.getDateInstance(DateFormat.FULL, JAJPJP),
"令和元年5月1日水曜日"),
Arguments.of(DateFormat.getDateInstance(DateFormat.FULL, JCAL),
"令和元年5月1日水曜日"),
Arguments.of(DateFormat.getDateInstance(DateFormat.LONG, JAJPJP),
"令和元年5月1日"),
Arguments.of(DateFormat.getDateInstance(DateFormat.LONG, JCAL),
"令和元年5月1日"),
Arguments.of(DateFormat.getDateInstance(DateFormat.MEDIUM, JAJPJP),
"令和1年5月1日"),
Arguments.of(DateFormat.getDateInstance(DateFormat.MEDIUM, JCAL),
"令和1年5月1日"),
Arguments.of(DateFormat.getDateInstance(DateFormat.SHORT, JAJPJP),
"令和1/5/1"),
Arguments.of(DateFormat.getDateInstance(DateFormat.SHORT, JCAL),
"令和1/5/1")
);
}
@ParameterizedTest
@MethodSource("gannen")
void testGannenFormat(DateFormat df, String expected) {
assertEquals(expected, df.format(c.getTime()));
}
@ParameterizedTest
@MethodSource("gannen")
void testGannenParse(DateFormat df, String formatted) throws ParseException {
assertEquals(c.getTime(), df.parse(formatted));
}
}
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