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jsr166 |
1.1 |
/* |
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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.AtomicInteger; |
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import junit.framework.Test; |
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import junit.framework.TestSuite; |
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public class AtomicInteger9Test 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(AtomicInteger9Test.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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.getPlain()); |
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ai.set(2); |
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assertEquals(2, ai.getPlain()); |
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ai.set(-3); |
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assertEquals(-3, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.getOpaque()); |
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ai.set(2); |
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assertEquals(2, ai.getOpaque()); |
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ai.set(-3); |
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assertEquals(-3, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.getAcquire()); |
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ai.set(2); |
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assertEquals(2, ai.getAcquire()); |
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ai.set(-3); |
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assertEquals(-3, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.get()); |
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ai.setPlain(2); |
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assertEquals(2, ai.get()); |
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ai.setPlain(-3); |
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assertEquals(-3, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.get()); |
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ai.setOpaque(2); |
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assertEquals(2, ai.get()); |
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ai.setOpaque(-3); |
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assertEquals(-3, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.get()); |
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ai.setRelease(2); |
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assertEquals(2, ai.get()); |
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ai.setRelease(-3); |
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assertEquals(-3, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.compareAndExchange(1, 2)); |
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assertEquals(2, ai.compareAndExchange(2, -4)); |
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assertEquals(-4, ai.get()); |
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assertEquals(-4, ai.compareAndExchange(-5, 7)); |
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assertEquals(-4, ai.get()); |
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assertEquals(-4, ai.compareAndExchange(-4, 7)); |
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assertEquals(7, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.compareAndExchangeAcquire(1, 2)); |
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assertEquals(2, ai.compareAndExchangeAcquire(2, -4)); |
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assertEquals(-4, ai.get()); |
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assertEquals(-4, ai.compareAndExchangeAcquire(-5, 7)); |
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assertEquals(-4, ai.get()); |
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assertEquals(-4, ai.compareAndExchangeAcquire(-4, 7)); |
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assertEquals(7, 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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AtomicInteger ai = new AtomicInteger(1); |
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assertEquals(1, ai.compareAndExchangeRelease(1, 2)); |
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assertEquals(2, ai.compareAndExchangeRelease(2, -4)); |
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assertEquals(-4, ai.get()); |
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assertEquals(-4, ai.compareAndExchangeRelease(-5, 7)); |
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assertEquals(-4, ai.get()); |
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assertEquals(-4, ai.compareAndExchangeRelease(-4, 7)); |
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assertEquals(7, 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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AtomicInteger ai = new AtomicInteger(1); |
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do {} while (!ai.weakCompareAndSetVolatile(1, 2)); |
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do {} while (!ai.weakCompareAndSetVolatile(2, -4)); |
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assertEquals(-4, ai.get()); |
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do {} while (!ai.weakCompareAndSetVolatile(-4, 7)); |
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assertEquals(7, 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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AtomicInteger ai = new AtomicInteger(1); |
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do {} while (!ai.weakCompareAndSetAcquire(1, 2)); |
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do {} while (!ai.weakCompareAndSetAcquire(2, -4)); |
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assertEquals(-4, ai.get()); |
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do {} while (!ai.weakCompareAndSetAcquire(-4, 7)); |
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assertEquals(7, 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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AtomicInteger ai = new AtomicInteger(1); |
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do {} while (!ai.weakCompareAndSetRelease(1, 2)); |
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do {} while (!ai.weakCompareAndSetRelease(2, -4)); |
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assertEquals(-4, ai.get()); |
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do {} while (!ai.weakCompareAndSetRelease(-4, 7)); |
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assertEquals(7, ai.get()); |
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} |
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} |
