217 lines
7.5 KiB
Java
217 lines
7.5 KiB
Java
/*
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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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/*
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* This file is available under and governed by the GNU General Public
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* License version 2 only, as published by the Free Software Foundation.
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* However, the following notice accompanied the original version of this
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* file:
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*
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* Written by Doug Lea with assistance from members of JCP JSR-166
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* Expert Group and released to the public domain, as explained at
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* http://creativecommons.org/publicdomain/zero/1.0/
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*/
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import java.util.concurrent.atomic.AtomicReference;
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import junit.framework.Test;
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import junit.framework.TestSuite;
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public class AtomicReference9Test extends JSR166TestCase {
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public static void main(String[] args) {
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main(suite(), args);
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}
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public static Test suite() {
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return new TestSuite(AtomicReference9Test.class);
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}
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/**
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* getPlain returns the last value set
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*/
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public void testGetPlainSet() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.getPlain());
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ai.set(two);
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mustEqual(two, ai.getPlain());
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ai.set(minusThree);
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mustEqual(minusThree, ai.getPlain());
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}
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/**
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* getOpaque returns the last value set
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*/
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public void testGetOpaqueSet() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.getOpaque());
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ai.set(two);
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mustEqual(two, ai.getOpaque());
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ai.set(minusThree);
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mustEqual(minusThree, ai.getOpaque());
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}
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/**
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* getAcquire returns the last value set
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*/
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public void testGetAcquireSet() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.getAcquire());
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ai.set(two);
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mustEqual(two, ai.getAcquire());
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ai.set(minusThree);
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mustEqual(minusThree, ai.getAcquire());
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}
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/**
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* get returns the last value setPlain
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*/
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public void testGetSetPlain() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.get());
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ai.setPlain(two);
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mustEqual(two, ai.get());
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ai.setPlain(minusThree);
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mustEqual(minusThree, ai.get());
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}
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/**
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* get returns the last value setOpaque
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*/
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public void testGetSetOpaque() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.get());
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ai.setOpaque(two);
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mustEqual(two, ai.get());
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ai.setOpaque(minusThree);
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mustEqual(minusThree, ai.get());
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}
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/**
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* get returns the last value setRelease
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*/
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public void testGetSetRelease() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.get());
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ai.setRelease(two);
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mustEqual(two, ai.get());
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ai.setRelease(minusThree);
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mustEqual(minusThree, ai.get());
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}
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/**
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* compareAndExchange succeeds in changing value if equal to
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* expected else fails
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*/
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public void testCompareAndExchange() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.compareAndExchange(one, two));
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mustEqual(two, ai.compareAndExchange(two, minusFour));
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mustEqual(minusFour, ai.get());
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mustEqual(minusFour, ai.compareAndExchange(minusFive, seven));
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mustEqual(minusFour, ai.get());
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mustEqual(minusFour, ai.compareAndExchange(minusFour, seven));
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mustEqual(seven, ai.get());
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}
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/**
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* compareAndExchangeAcquire succeeds in changing value if equal to
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* expected else fails
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*/
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public void testCompareAndExchangeAcquire() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.compareAndExchangeAcquire(one, two));
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mustEqual(two, ai.compareAndExchangeAcquire(two, minusFour));
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mustEqual(minusFour, ai.get());
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mustEqual(minusFour, ai.compareAndExchangeAcquire(minusFive, seven));
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mustEqual(minusFour, ai.get());
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mustEqual(minusFour, ai.compareAndExchangeAcquire(minusFour, seven));
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mustEqual(seven, ai.get());
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}
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/**
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* compareAndExchangeRelease succeeds in changing value if equal to
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* expected else fails
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*/
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public void testCompareAndExchangeRelease() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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mustEqual(one, ai.compareAndExchangeRelease(one, two));
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mustEqual(two, ai.compareAndExchangeRelease(two, minusFour));
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mustEqual(minusFour, ai.get());
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mustEqual(minusFour, ai.compareAndExchangeRelease(minusFive, seven));
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mustEqual(minusFour, ai.get());
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mustEqual(minusFour, ai.compareAndExchangeRelease(minusFour, seven));
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mustEqual(seven, ai.get());
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}
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/**
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* repeated weakCompareAndSetPlain succeeds in changing value when equal
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* to expected
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*/
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public void testWeakCompareAndSetPlain() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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do {} while (!ai.weakCompareAndSetPlain(one, two));
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do {} while (!ai.weakCompareAndSetPlain(two, minusFour));
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mustEqual(minusFour, ai.get());
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do {} while (!ai.weakCompareAndSetPlain(minusFour, seven));
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mustEqual(seven, ai.get());
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}
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/**
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* repeated weakCompareAndSetVolatile succeeds in changing value when equal
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* to expected
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*/
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public void testWeakCompareAndSetVolatile() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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do {} while (!ai.weakCompareAndSetVolatile(one, two));
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do {} while (!ai.weakCompareAndSetVolatile(two, minusFour));
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mustEqual(minusFour, ai.get());
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do {} while (!ai.weakCompareAndSetVolatile(minusFour, seven));
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mustEqual(seven, ai.get());
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}
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/**
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* repeated weakCompareAndSetAcquire succeeds in changing value when equal
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* to expected
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*/
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public void testWeakCompareAndSetAcquire() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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do {} while (!ai.weakCompareAndSetAcquire(one, two));
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do {} while (!ai.weakCompareAndSetAcquire(two, minusFour));
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mustEqual(minusFour, ai.get());
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do {} while (!ai.weakCompareAndSetAcquire(minusFour, seven));
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mustEqual(seven, ai.get());
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}
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/**
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* repeated weakCompareAndSetRelease succeeds in changing value when equal
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* to expected
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*/
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public void testWeakCompareAndSetRelease() {
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AtomicReference<Item> ai = new AtomicReference<>(one);
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do {} while (!ai.weakCompareAndSetRelease(one, two));
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do {} while (!ai.weakCompareAndSetRelease(two, minusFour));
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mustEqual(minusFour, ai.get());
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do {} while (!ai.weakCompareAndSetRelease(minusFour, seven));
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mustEqual(seven, ai.get());
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}
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}
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