96 lines
3.9 KiB
Java
96 lines
3.9 KiB
Java
/*
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* Copyright (c) 2022, 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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/* @test
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* @bug 8285838
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* @library /test/lib
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* @summary This test will ensure that daylight savings rules are followed
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* appropriately when setting a custom timezone ID via the TZ env variable.
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* @requires os.family != "windows"
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* @run main/othervm CustomTzIDCheckDST
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*/
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import java.util.Calendar;
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import java.util.Date;
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import java.util.SimpleTimeZone;
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import java.util.TimeZone;
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import java.time.DayOfWeek;
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import java.time.ZonedDateTime;
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import java.time.temporal.TemporalAdjusters;
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import jdk.test.lib.process.ProcessTools;
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import jdk.test.lib.process.OutputAnalyzer;
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public class CustomTzIDCheckDST {
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// Northern Hemisphere
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private static String CUSTOM_TZ = "MEZ-1MESZ,M3.5.0,M10.5.0/3";
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// Simulate Southern Hemisphere
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private static String CUSTOM_TZ2 = "MEZ-1MESZ,M10.5.0,M3.5.0/3";
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public static void main(String args[]) throws Throwable {
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if (args.length == 0) {
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ProcessBuilder pb = ProcessTools.createTestJavaProcessBuilder("CustomTzIDCheckDST", "runTZTest");
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pb.environment().put("TZ", CUSTOM_TZ);
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OutputAnalyzer output = ProcessTools.executeProcess(pb);
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output.shouldHaveExitValue(0);
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pb.environment().put("TZ", CUSTOM_TZ2);
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output = ProcessTools.executeProcess(pb);
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output.shouldHaveExitValue(0);
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} else {
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runTZTest();
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}
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}
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/* TZ is set to "MEZ-1MESZ,M3.5.0,M10.5.0/3", it will be the northern hemisphere.
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* This ensures the transition periods for Daylights Savings should be at March's last
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* Sunday and October's last Sunday.
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*/
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private static void runTZTest() {
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Date time = new Date();
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String tzStr = System.getenv("TZ");
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if (tzStr == null)
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throw new RuntimeException("Got unexpected timezone information: TZ is null");
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boolean nor = CUSTOM_TZ.equals(tzStr);
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TimeZone tz = new SimpleTimeZone(3600000, tzStr,
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nor ? Calendar.MARCH : Calendar.OCTOBER, -1,
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Calendar.SUNDAY, 3600000, SimpleTimeZone.UTC_TIME,
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nor ? Calendar.OCTOBER : Calendar.MARCH, -1,
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Calendar.SUNDAY, 3600000, SimpleTimeZone.UTC_TIME,
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3600000);
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if (tz.inDaylightTime(time)) {
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// We are in Daylight savings period.
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if (time.toString().endsWith("GMT+02:00 " + Integer.toString(time.getYear() + 1900)))
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return;
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} else {
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if (time.toString().endsWith("GMT+01:00 " + Integer.toString(time.getYear() + 1900)))
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return;
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}
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// Reaching here means time zone did not match up as expected.
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throw new RuntimeException("Got unexpected timezone information: " + tzStr + " " + time);
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}
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private static ZonedDateTime getLastSundayOfMonth(ZonedDateTime date) {
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return date.with(TemporalAdjusters.lastInMonth(DayOfWeek.SUNDAY));
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}
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}
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