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Backport ee4d9aa4c11c47e7cf15f2742919ac20311f9ea7
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test/jdk/java/util/concurrent/LinkedTransferQueue/SubclassTest.java
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/* | ||
* Copyright (c) 2024, 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. | ||
*/ | ||
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/* | ||
* @test | ||
* @bug 8323659 | ||
* @summary Ensures that the implementation of LTQ add and put methods does | ||
* not call overridable offer. This test specifically asserts implementation | ||
* details of LTQ. It's not that such impl details cannot change, just that | ||
* such a change should be deliberately done with suitable consideration | ||
* to compatibility. | ||
* @run testng SubclassTest | ||
*/ | ||
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import java.util.concurrent.LinkedTransferQueue; | ||
import java.util.concurrent.TimeUnit; | ||
import org.testng.annotations.Test; | ||
import static org.testng.Assert.assertEquals; | ||
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@Test | ||
public class SubclassTest { | ||
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public void testPut() { | ||
var queue = new TestLinkedTransferQueue(); | ||
queue.put(new Object()); | ||
assertEquals(queue.size(), 1); | ||
} | ||
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public void testAdd() { | ||
var queue = new TestLinkedTransferQueue(); | ||
queue.add(new Object()); | ||
assertEquals(queue.size(), 1); | ||
} | ||
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public void testTimedOffer() { | ||
var queue = new TestLinkedTransferQueue(); | ||
queue.offer(new Object(), 60, TimeUnit.SECONDS); | ||
assertEquals(queue.size(), 1); | ||
} | ||
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static class TestLinkedTransferQueue extends LinkedTransferQueue<Object> { | ||
@Override | ||
public boolean offer(Object obj) { | ||
return false; // simulate fails to add the given obj | ||
} | ||
} | ||
} |