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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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test/jdk/java/util/TimeZone/SimpleTimeZoneEqualsHashCodeTest.java Normal file
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/*
* Copyright (c) 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 8369184
* @summary Checks if equals()/hashCode() of SimpleTimeZone works correctly
* @run junit SimpleTimeZoneEqualsHashCodeTest
*/
import java.util.SimpleTimeZone;
import static java.util.Calendar.MARCH;
import static java.util.Calendar.NOVEMBER;
import static java.util.Calendar.SUNDAY;
import org.junit.jupiter.api.Test;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotEquals;
import static org.junit.jupiter.api.Assertions.assertTrue;
public class SimpleTimeZoneEqualsHashCodeTest {
private static final SimpleTimeZone STZ_WITH_DST =
new SimpleTimeZone(-288_000_000, "America/Los_Angeles",
MARCH, 8, -SUNDAY, 7_200_000,
NOVEMBER, 1, -SUNDAY, 7_200_000);
private static final SimpleTimeZone STZ_WITHOUT_DST =
new SimpleTimeZone(0, "foo");
@Test
void withDSTTest() {
var stz = (SimpleTimeZone)STZ_WITH_DST.clone();
assertEquals(STZ_WITH_DST, stz);
assertEquals(STZ_WITH_DST.hashCode(), stz.hashCode());
stz.setEndRule(NOVEMBER, 8, -SUNDAY, 7_200_000);
assertNotEquals(STZ_WITH_DST, stz);
// From the contract point, hash codes may be the same.
// This tests the implementation which considers DST
// related fields for calculating the hash code.
assertNotEquals(STZ_WITH_DST.hashCode(), stz.hashCode());
}
@Test
void withoutDSTTest() {
var stz = (SimpleTimeZone)STZ_WITHOUT_DST.clone();
// Only setting start rule. Still considered non-DST zone
stz.setStartRule(MARCH, 8, -SUNDAY, 7_200_000);
assertTrue(!stz.useDaylightTime());
assertEquals(STZ_WITHOUT_DST, stz);
assertEquals(STZ_WITHOUT_DST.hashCode(), stz.hashCode());
// Setting end rule as well. Now it is considered DST zone
stz.setEndRule(NOVEMBER, 8, -SUNDAY, 7_200_000);
assertTrue(stz.useDaylightTime());
assertNotEquals(STZ_WITHOUT_DST, stz);
// From the contract point, hash codes may be the same.
// This tests the implementation which considers DST
// related fields for calculating the hash code.
assertNotEquals(STZ_WITHOUT_DST.hashCode(), stz.hashCode());
}
}