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/*
* Copyright (c) 2000, 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 4372743
* @summary test that checks transitions of ERA and YEAR which are caused by add(MONTH).
* @run junit bug4372743
*/
import java.util.GregorianCalendar;
import java.util.TimeZone;
import java.util.stream.Stream;
import static java.util.GregorianCalendar.AD;
import static java.util.GregorianCalendar.APRIL;
import static java.util.GregorianCalendar.AUGUST;
import static java.util.GregorianCalendar.BC;
import static java.util.GregorianCalendar.DECEMBER;
import static java.util.GregorianCalendar.ERA;
import static java.util.GregorianCalendar.FEBRUARY;
import static java.util.GregorianCalendar.JANUARY;
import static java.util.GregorianCalendar.JULY;
import static java.util.GregorianCalendar.JUNE;
import static java.util.GregorianCalendar.MARCH;
import static java.util.GregorianCalendar.MAY;
import static java.util.GregorianCalendar.MONTH;
import static java.util.GregorianCalendar.NOVEMBER;
import static java.util.GregorianCalendar.OCTOBER;
import static java.util.GregorianCalendar.SEPTEMBER;
import static java.util.GregorianCalendar.YEAR;
import org.junit.jupiter.api.AfterAll;
import org.junit.jupiter.api.BeforeAll;
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 bug4372743 {
// Save JVM default timezone
private static final TimeZone savedTz = TimeZone.getDefault();
// Set custom JVM default timezone
@BeforeAll
static void initAll() {
TimeZone.setDefault(TimeZone.getTimeZone("PST"));
}
// Restore JVM default timezone
@AfterAll
static void tearDownAll() {
TimeZone.setDefault(savedTz);
}
/*
* Set GregorianCalendar to (March 3, A.D. 2) and test adding
* to the month field. Ensure that the added field is as expected.
*/
@ParameterizedTest
@MethodSource("A_D_Values")
public void A_D_Test(GregorianCalendar gc, int monthValue) {
for (int i = 0; i < tableSize; i+=(-monthValue)) {
check(gc, i);
gc.add(MONTH, monthValue);
}
}
// Given in format: (A.D.) GregorianCalendar, amount to add
private static Stream<Arguments> A_D_Values() {
return Stream.of(
Arguments.of(new GregorianCalendar(2, MARCH, 3), -1),
Arguments.of(new GregorianCalendar(2, MARCH, 3), -7));
}
/*
* Set GregorianCalendar to (March 10, 2 B.C.) and test adding
* to the month field. Ensure that the added field is as expected.
*/
@ParameterizedTest
@MethodSource("B_C_Values")
public void B_C_Test(GregorianCalendar gc, int monthValue) {
gc.add(YEAR, -3);
for (int i = tableSize - 1; i >= 0; i-=monthValue) {
check(gc, i);
gc.add(MONTH, monthValue);
}
}
// Given in format: (B.C.) GregorianCalendar, amount to add
private static Stream<Arguments> B_C_Values() {
return Stream.of(
Arguments.of(new GregorianCalendar(2, OCTOBER, 10), 1),
Arguments.of(new GregorianCalendar(2, OCTOBER, 10), 8));
}
// Check golden data array with actual value
private void check(GregorianCalendar gc, int index) {
assertEquals(data[index][ERA], gc.get(ERA), "Invalid era");
assertEquals(data[index][YEAR], gc.get(YEAR), "Invalid year");
assertEquals(data[index][MONTH], gc.get(MONTH), "Invalid month");
}
// Expected ERA, YEAR, and MONTH combinations
private final int[][] data = {
{AD, 2, MARCH},
{AD, 2, FEBRUARY},
{AD, 2, JANUARY},
{AD, 1, DECEMBER},
{AD, 1, NOVEMBER},
{AD, 1, OCTOBER},
{AD, 1, SEPTEMBER},
{AD, 1, AUGUST},
{AD, 1, JULY},
{AD, 1, JUNE},
{AD, 1, MAY},
{AD, 1, APRIL},
{AD, 1, MARCH},
{AD, 1, FEBRUARY},
{AD, 1, JANUARY},
{BC, 1, DECEMBER},
{BC, 1, NOVEMBER},
{BC, 1, OCTOBER},
{BC, 1, SEPTEMBER},
{BC, 1, AUGUST},
{BC, 1, JULY},
{BC, 1, JUNE},
{BC, 1, MAY},
{BC, 1, APRIL},
{BC, 1, MARCH},
{BC, 1, FEBRUARY},
{BC, 1, JANUARY},
{BC, 2, DECEMBER},
{BC, 2, NOVEMBER},
{BC, 2, OCTOBER}};
private final int tableSize = data.length;
}
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