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/* |
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* Written by members of JCP JSR-166 Expert Group and released to the |
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* public domain. Use, modify, and redistribute this code in any way |
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* without acknowledgement. Other contributors include Andrew Wright, |
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* Jeffrey Hayes, Pat Fischer, Mike Judd. |
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*/ |
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|
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import junit.framework.*; |
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import java.util.concurrent.atomic.*; |
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|
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public class AtomicMarkableReferenceTest extends JSR166TestCase{ |
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public static void main (String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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} |
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public static Test suite() { |
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return new TestSuite(AtomicMarkableReferenceTest.class); |
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} |
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|
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static final Integer zero = new Integer(0); |
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static final Integer one = new Integer(1); |
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static final Integer two = new Integer(2); |
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static final Integer m3 = new Integer(-3); |
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|
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/** |
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* |
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*/ |
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public void testConstructor(){ |
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AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
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assertEquals(one,ai.getReference()); |
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assertFalse(ai.isMarked()); |
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AtomicMarkableReference a2 = new AtomicMarkableReference(null, true); |
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assertNull(a2.getReference()); |
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assertTrue(a2.isMarked()); |
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|
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} |
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|
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/** |
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* |
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*/ |
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public void testGetSet(){ |
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boolean[] mark = new boolean[1]; |
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AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
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assertEquals(one,ai.getReference()); |
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assertFalse(ai.isMarked()); |
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assertEquals(one, ai.get(mark)); |
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assertFalse(mark[0]); |
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ai.set(two, false); |
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assertEquals(two,ai.getReference()); |
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assertFalse(ai.isMarked()); |
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assertEquals(two, ai.get(mark)); |
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assertFalse(mark[0]); |
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ai.set(one, true); |
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assertEquals(one,ai.getReference()); |
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assertTrue(ai.isMarked()); |
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assertEquals(one, ai.get(mark)); |
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assertTrue(mark[0]); |
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} |
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|
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/** |
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* |
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*/ |
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public void testAttemptMark(){ |
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boolean[] mark = new boolean[1]; |
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AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
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assertFalse(ai.isMarked()); |
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assertTrue(ai.attemptMark(one, true)); |
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assertTrue(ai.isMarked()); |
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assertEquals(one, ai.get(mark)); |
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assertTrue(mark[0]); |
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} |
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|
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/** |
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* |
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*/ |
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public void testCompareAndSet(){ |
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boolean[] mark = new boolean[1]; |
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AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
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assertEquals(one, ai.get(mark)); |
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assertFalse(ai.isMarked()); |
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assertFalse(mark[0]); |
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|
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assertTrue(ai.compareAndSet(one, two, false, false)); |
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assertEquals(two, ai.get(mark)); |
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assertFalse(mark[0]); |
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|
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assertTrue(ai.compareAndSet(two, m3, false, true)); |
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assertEquals(m3, ai.get(mark)); |
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assertTrue(mark[0]); |
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|
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assertFalse(ai.compareAndSet(two, m3, true, true)); |
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assertEquals(m3, ai.get(mark)); |
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assertTrue(mark[0]); |
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} |
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|
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/** |
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* |
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*/ |
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public void testWeakCompareAndSet(){ |
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boolean[] mark = new boolean[1]; |
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AtomicMarkableReference ai = new AtomicMarkableReference(one, false); |
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assertEquals(one, ai.get(mark)); |
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assertFalse(ai.isMarked()); |
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assertFalse(mark[0]); |
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|
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while(!ai.weakCompareAndSet(one, two, false, false)); |
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assertEquals(two, ai.get(mark)); |
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assertFalse(mark[0]); |
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|
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while(!ai.weakCompareAndSet(two, m3, false, true)); |
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assertEquals(m3, ai.get(mark)); |
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assertTrue(mark[0]); |
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} |
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|
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} |
