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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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|
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import java.util.concurrent.atomic.AtomicReference; |
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|
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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|
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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/** |
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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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} |
