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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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* 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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* Other contributors include Andrew Wright, Jeffrey Hayes, |
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* Pat Fisher, Mike Judd. |
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*/ |
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import junit.framework.*; |
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import java.util.*; |
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import java.util.concurrent.*; |
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import static java.util.concurrent.TimeUnit.MILLISECONDS; |
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import java.io.*; |
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|
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public class SynchronousQueueTest extends JSR166TestCase { |
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|
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public static class Fair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new SynchronousQueue(true); |
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} |
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} |
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|
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public static class NonFair extends BlockingQueueTest { |
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protected BlockingQueue emptyCollection() { |
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return new SynchronousQueue(false); |
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} |
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} |
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|
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public static void main(String[] args) { |
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junit.textui.TestRunner.run (suite()); |
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junit.textui.TestRunner.run(suite()); |
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} |
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|
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public static Test suite() { |
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return new TestSuite(SynchronousQueueTest.class); |
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return newTestSuite(SynchronousQueueTest.class, |
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new Fair().testSuite(), |
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new NonFair().testSuite()); |
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} |
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|
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/** |
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* |
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* Any SynchronousQueue is both empty and full |
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*/ |
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public void testEmptyFull() { |
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SynchronousQueue q = new SynchronousQueue(); |
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public void testEmptyFull(SynchronousQueue q) { |
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assertTrue(q.isEmpty()); |
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assertEquals(0, q.size()); |
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assertEquals(0, q.size()); |
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assertEquals(0, q.remainingCapacity()); |
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assertFalse(q.offer(new Integer(3))); |
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assertFalse(q.offer(zero)); |
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} |
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|
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/** |
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* A non-fair SynchronousQueue is both empty and full |
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*/ |
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public void testEmptyFull() { |
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testEmptyFull(new SynchronousQueue()); |
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} |
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|
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/** |
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* A fair SynchronousQueue is both empty and full |
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*/ |
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public void testFairEmptyFull() { |
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testEmptyFull(new SynchronousQueue(true)); |
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} |
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|
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/** |
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* |
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* offer(null) throws NPE |
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*/ |
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public void testOfferNull() { |
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try { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.offer(null); |
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shouldThrow(); |
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} catch (NullPointerException success) { } |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* add(null) throws NPE |
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*/ |
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public void testAddNull() { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.add(null); |
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shouldThrow(); |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* |
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* offer fails if no active taker |
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*/ |
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public void testOffer() { |
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SynchronousQueue q = new SynchronousQueue(); |
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assertFalse(q.offer(new Integer(1))); |
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assertFalse(q.offer(one)); |
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} |
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|
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/** |
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* |
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* add throws ISE if no active taker |
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*/ |
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public void testAdd() { |
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try { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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assertEquals(0, q.remainingCapacity()); |
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q.add(new Integer(0)); |
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} catch (IllegalStateException success){ |
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} |
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q.add(one); |
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shouldThrow(); |
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} catch (IllegalStateException success) {} |
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} |
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|
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/** |
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* |
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* addAll(null) throws NPE |
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*/ |
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public void testAddAll1() { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.addAll(null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* addAll(this) throws IAE |
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*/ |
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public void testAddAllSelf() { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.addAll(q); |
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shouldThrow(); |
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} catch (IllegalArgumentException success) {} |
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} |
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|
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/** |
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* |
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* addAll of a collection with null elements throws NPE |
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*/ |
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public void testAddAll2() { |
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try { |
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Integer[] ints = new Integer[1]; |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (NullPointerException success) {} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* |
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* addAll throws ISE if no active taker |
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*/ |
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public void testAddAll4() { |
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try { |
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ints[i] = new Integer(i); |
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q.addAll(Arrays.asList(ints)); |
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shouldThrow(); |
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} |
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catch (IllegalStateException success) {} |
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} catch (IllegalStateException success) {} |
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} |
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|
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/** |
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* |
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* put(null) throws NPE |
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*/ |
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public void testPutNull() { |
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try { |
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public void testPutNull() throws InterruptedException { |
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try { |
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SynchronousQueue q = new SynchronousQueue(); |
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q.put(null); |
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shouldThrow(); |
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} |
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catch (NullPointerException success){ |
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} |
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catch (InterruptedException ie) { |
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unexpectedException(); |
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} |
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} |
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} catch (NullPointerException success) {} |
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} |
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|
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/** |
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* |
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* put blocks interruptibly if no active taker |
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*/ |
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public void testBlockingPut() { |
168 |
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Thread t = new Thread(new Runnable() { |
169 |
< |
public void run() { |
170 |
< |
try { |
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SynchronousQueue q = new SynchronousQueue(); |
172 |
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q.put(new Integer(0)); |
173 |
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threadShouldThrow(); |
129 |
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} catch (InterruptedException ie){ |
130 |
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} |
131 |
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}}); |
167 |
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public void testBlockingPut() throws InterruptedException { |
168 |
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Thread t = new Thread(new CheckedInterruptedRunnable() { |
169 |
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public void realRun() throws InterruptedException { |
170 |
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SynchronousQueue q = new SynchronousQueue(); |
171 |
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q.put(zero); |
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}}); |
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|
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t.start(); |
175 |
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try { |
176 |
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Thread.sleep(SHORT_DELAY_MS); |
177 |
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t.interrupt(); |
136 |
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t.join(); |
137 |
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} |
138 |
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catch (InterruptedException ie) { |
139 |
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unexpectedException(); |
140 |
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} |
175 |
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delay(SHORT_DELAY_MS); |
176 |
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t.interrupt(); |
177 |
> |
t.join(); |
178 |
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} |
179 |
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|
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/** |
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* |
181 |
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* put blocks waiting for take |
182 |
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*/ |
183 |
< |
public void testPutWithTake() { |
183 |
> |
public void testPutWithTake() throws InterruptedException { |
184 |
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final SynchronousQueue q = new SynchronousQueue(); |
185 |
< |
Thread t = new Thread(new Runnable() { |
186 |
< |
public void run() { |
187 |
< |
int added = 0; |
188 |
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try { |
189 |
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q.put(new Object()); |
190 |
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++added; |
154 |
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q.put(new Object()); |
155 |
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++added; |
156 |
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q.put(new Object()); |
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++added; |
158 |
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q.put(new Object()); |
185 |
> |
Thread t = new Thread(new CheckedRunnable() { |
186 |
> |
public void realRun() throws InterruptedException { |
187 |
> |
int added = 0; |
188 |
> |
try { |
189 |
> |
while (true) { |
190 |
> |
q.put(added); |
191 |
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++added; |
160 |
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threadShouldThrow(); |
161 |
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} catch (InterruptedException e){ |
162 |
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assertTrue(added >= 1); |
192 |
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} |
193 |
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} catch (InterruptedException success) { |
194 |
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assertEquals(1, added); |
195 |
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} |
196 |
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}); |
197 |
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try { |
198 |
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t.start(); |
199 |
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Thread.sleep(SHORT_DELAY_MS); |
200 |
< |
q.take(); |
201 |
< |
Thread.sleep(SHORT_DELAY_MS); |
202 |
< |
t.interrupt(); |
203 |
< |
t.join(); |
204 |
< |
} catch (Exception e){ |
205 |
< |
unexpectedException(); |
206 |
< |
} |
196 |
> |
}}); |
197 |
> |
|
198 |
> |
t.start(); |
199 |
> |
delay(SHORT_DELAY_MS); |
200 |
> |
assertEquals(0, q.take()); |
201 |
> |
delay(SHORT_DELAY_MS); |
202 |
> |
t.interrupt(); |
203 |
> |
t.join(); |
204 |
> |
} |
205 |
> |
|
206 |
> |
/** |
207 |
> |
* timed offer times out if elements not taken |
208 |
> |
*/ |
209 |
> |
public void testTimedOffer(final SynchronousQueue q) |
210 |
> |
throws InterruptedException { |
211 |
> |
final CountDownLatch pleaseInterrupt = new CountDownLatch(1); |
212 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
213 |
> |
public void realRun() throws InterruptedException { |
214 |
> |
long t0 = System.nanoTime(); |
215 |
> |
assertFalse(q.offer(new Object(), SHORT_DELAY_MS, MILLISECONDS)); |
216 |
> |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
217 |
> |
pleaseInterrupt.countDown(); |
218 |
> |
t0 = System.nanoTime(); |
219 |
> |
try { |
220 |
> |
q.offer(new Object(), LONG_DELAY_MS, MILLISECONDS); |
221 |
> |
shouldThrow(); |
222 |
> |
} catch (InterruptedException success) {} |
223 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
224 |
> |
}}); |
225 |
> |
|
226 |
> |
assertTrue(pleaseInterrupt.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
227 |
> |
t.interrupt(); |
228 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
229 |
|
} |
230 |
|
|
231 |
|
/** |
232 |
< |
* |
232 |
> |
* timed offer times out if elements not taken |
233 |
|
*/ |
234 |
< |
public void testTimedOffer() { |
235 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
183 |
< |
Thread t = new Thread(new Runnable() { |
184 |
< |
public void run() { |
185 |
< |
try { |
186 |
< |
|
187 |
< |
threadAssertFalse(q.offer(new Object(), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
188 |
< |
q.offer(new Object(), LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
189 |
< |
threadShouldThrow(); |
190 |
< |
} catch (InterruptedException success){} |
191 |
< |
} |
192 |
< |
}); |
193 |
< |
|
194 |
< |
try { |
195 |
< |
t.start(); |
196 |
< |
Thread.sleep(SMALL_DELAY_MS); |
197 |
< |
t.interrupt(); |
198 |
< |
t.join(); |
199 |
< |
} catch (Exception e){ |
200 |
< |
unexpectedException(); |
201 |
< |
} |
234 |
> |
public void testTimedOffer() throws InterruptedException { |
235 |
> |
testTimedOffer(new SynchronousQueue()); |
236 |
|
} |
237 |
|
|
238 |
+ |
/** |
239 |
+ |
* timed offer times out if elements not taken |
240 |
+ |
*/ |
241 |
+ |
public void testFairTimedOffer() throws InterruptedException { |
242 |
+ |
testTimedOffer(new SynchronousQueue(true)); |
243 |
+ |
} |
244 |
|
|
245 |
|
/** |
246 |
< |
* |
246 |
> |
* put blocks interruptibly if no active taker |
247 |
|
*/ |
248 |
< |
public void testTakeFromEmpty() { |
249 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
250 |
< |
Thread t = new Thread(new Runnable() { |
251 |
< |
public void run() { |
252 |
< |
try { |
253 |
< |
q.take(); |
254 |
< |
threadShouldThrow(); |
255 |
< |
} catch (InterruptedException success){ } |
248 |
> |
public void testFairBlockingPut() throws InterruptedException { |
249 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
250 |
> |
public void realRun() throws InterruptedException { |
251 |
> |
SynchronousQueue q = new SynchronousQueue(true); |
252 |
> |
q.put(zero); |
253 |
> |
}}); |
254 |
> |
|
255 |
> |
t.start(); |
256 |
> |
delay(SHORT_DELAY_MS); |
257 |
> |
t.interrupt(); |
258 |
> |
t.join(); |
259 |
> |
} |
260 |
> |
|
261 |
> |
/** |
262 |
> |
* put blocks waiting for take |
263 |
> |
*/ |
264 |
> |
public void testFairPutWithTake() throws InterruptedException { |
265 |
> |
final SynchronousQueue q = new SynchronousQueue(true); |
266 |
> |
Thread t = new Thread(new CheckedRunnable() { |
267 |
> |
public void realRun() throws InterruptedException { |
268 |
> |
int added = 0; |
269 |
> |
try { |
270 |
> |
while (true) { |
271 |
> |
q.put(added); |
272 |
> |
++added; |
273 |
> |
} |
274 |
> |
} catch (InterruptedException success) { |
275 |
> |
assertEquals(1, added); |
276 |
|
} |
277 |
< |
}); |
278 |
< |
try { |
279 |
< |
t.start(); |
280 |
< |
Thread.sleep(SHORT_DELAY_MS); |
281 |
< |
t.interrupt(); |
282 |
< |
t.join(); |
283 |
< |
} catch (Exception e){ |
284 |
< |
unexpectedException(); |
285 |
< |
} |
277 |
> |
}}); |
278 |
> |
|
279 |
> |
t.start(); |
280 |
> |
delay(SHORT_DELAY_MS); |
281 |
> |
assertEquals(0, q.take()); |
282 |
> |
delay(SHORT_DELAY_MS); |
283 |
> |
t.interrupt(); |
284 |
> |
t.join(); |
285 |
> |
} |
286 |
> |
|
287 |
> |
/** |
288 |
> |
* take blocks interruptibly when empty |
289 |
> |
*/ |
290 |
> |
public void testFairTakeFromEmpty() throws InterruptedException { |
291 |
> |
final SynchronousQueue q = new SynchronousQueue(true); |
292 |
> |
Thread t = new Thread(new CheckedInterruptedRunnable() { |
293 |
> |
public void realRun() throws InterruptedException { |
294 |
> |
q.take(); |
295 |
> |
}}); |
296 |
> |
|
297 |
> |
t.start(); |
298 |
> |
delay(SHORT_DELAY_MS); |
299 |
> |
t.interrupt(); |
300 |
> |
t.join(); |
301 |
|
} |
302 |
|
|
303 |
|
/** |
304 |
< |
* |
304 |
> |
* poll return null if no active putter |
305 |
|
*/ |
306 |
|
public void testPoll() { |
307 |
|
SynchronousQueue q = new SynchronousQueue(); |
308 |
< |
assertNull(q.poll()); |
308 |
> |
assertNull(q.poll()); |
309 |
|
} |
310 |
|
|
311 |
|
/** |
312 |
< |
* |
312 |
> |
* timed poll with zero timeout times out if no active putter |
313 |
|
*/ |
314 |
< |
public void testTimedPoll0() { |
315 |
< |
try { |
316 |
< |
SynchronousQueue q = new SynchronousQueue(); |
242 |
< |
assertNull(q.poll(0, TimeUnit.MILLISECONDS)); |
243 |
< |
} catch (InterruptedException e){ |
244 |
< |
unexpectedException(); |
245 |
< |
} |
314 |
> |
public void testTimedPoll0() throws InterruptedException { |
315 |
> |
SynchronousQueue q = new SynchronousQueue(); |
316 |
> |
assertNull(q.poll(0, MILLISECONDS)); |
317 |
|
} |
318 |
|
|
319 |
|
/** |
320 |
< |
* |
320 |
> |
* timed poll with nonzero timeout times out if no active putter |
321 |
|
*/ |
322 |
< |
public void testTimedPoll() { |
323 |
< |
try { |
324 |
< |
SynchronousQueue q = new SynchronousQueue(); |
325 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
326 |
< |
} catch (InterruptedException e){ |
256 |
< |
unexpectedException(); |
257 |
< |
} |
322 |
> |
public void testTimedPoll() throws InterruptedException { |
323 |
> |
SynchronousQueue q = new SynchronousQueue(); |
324 |
> |
long t0 = System.nanoTime(); |
325 |
> |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
326 |
> |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
327 |
|
} |
328 |
|
|
329 |
|
/** |
330 |
< |
* |
331 |
< |
*/ |
332 |
< |
public void testInterruptedTimedPoll() { |
333 |
< |
Thread t = new Thread(new Runnable() { |
334 |
< |
public void run() { |
335 |
< |
try { |
336 |
< |
SynchronousQueue q = new SynchronousQueue(); |
337 |
< |
assertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
338 |
< |
} catch (InterruptedException success){ |
339 |
< |
} |
340 |
< |
}}); |
341 |
< |
t.start(); |
342 |
< |
try { |
343 |
< |
Thread.sleep(SHORT_DELAY_MS); |
344 |
< |
t.interrupt(); |
345 |
< |
t.join(); |
346 |
< |
} |
347 |
< |
catch (InterruptedException ie) { |
348 |
< |
unexpectedException(); |
349 |
< |
} |
330 |
> |
* Interrupted timed poll throws InterruptedException instead of |
331 |
> |
* returning timeout status |
332 |
> |
*/ |
333 |
> |
public void testInterruptedTimedPoll(final SynchronousQueue q) |
334 |
> |
throws InterruptedException { |
335 |
> |
final CountDownLatch threadStarted = new CountDownLatch(1); |
336 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
337 |
> |
public void realRun() throws InterruptedException { |
338 |
> |
long t0 = System.nanoTime(); |
339 |
> |
threadStarted.countDown(); |
340 |
> |
try { |
341 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
342 |
> |
shouldThrow(); |
343 |
> |
} catch (InterruptedException success) {} |
344 |
> |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
345 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
346 |
> |
}}); |
347 |
> |
|
348 |
> |
threadStarted.await(); |
349 |
> |
delay(SHORT_DELAY_MS); |
350 |
> |
t.interrupt(); |
351 |
> |
awaitTermination(t, MEDIUM_DELAY_MS); |
352 |
|
} |
353 |
|
|
354 |
|
/** |
355 |
< |
* |
355 |
> |
* Interrupted timed poll throws InterruptedException instead of |
356 |
> |
* returning timeout status |
357 |
|
*/ |
358 |
< |
public void testTimedPollWithOffer() { |
359 |
< |
final SynchronousQueue q = new SynchronousQueue(); |
360 |
< |
Thread t = new Thread(new Runnable() { |
361 |
< |
public void run() { |
362 |
< |
try { |
363 |
< |
threadAssertNull(q.poll(SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
364 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
365 |
< |
q.poll(LONG_DELAY_MS, TimeUnit.MILLISECONDS); |
366 |
< |
threadShouldThrow(); |
367 |
< |
} catch (InterruptedException success) { } |
368 |
< |
} |
369 |
< |
}); |
370 |
< |
try { |
371 |
< |
t.start(); |
372 |
< |
Thread.sleep(SMALL_DELAY_MS); |
373 |
< |
assertTrue(q.offer(new Integer(0), SHORT_DELAY_MS, TimeUnit.MILLISECONDS)); |
374 |
< |
t.interrupt(); |
375 |
< |
t.join(); |
376 |
< |
} catch (Exception e){ |
377 |
< |
unexpectedException(); |
378 |
< |
} |
379 |
< |
} |
358 |
> |
public void testInterruptedTimedPoll() throws InterruptedException { |
359 |
> |
testInterruptedTimedPoll(new SynchronousQueue()); |
360 |
> |
} |
361 |
> |
|
362 |
> |
/** |
363 |
> |
* Interrupted timed poll throws InterruptedException instead of |
364 |
> |
* returning timeout status |
365 |
> |
*/ |
366 |
> |
public void testFairInterruptedTimedPoll() throws InterruptedException { |
367 |
> |
testInterruptedTimedPoll(new SynchronousQueue(true)); |
368 |
> |
} |
369 |
> |
|
370 |
> |
/** |
371 |
> |
* timed poll before a delayed offer times out, returning null; |
372 |
> |
* after offer succeeds; on interruption throws |
373 |
> |
*/ |
374 |
> |
public void testFairTimedPollWithOffer() throws InterruptedException { |
375 |
> |
final SynchronousQueue q = new SynchronousQueue(true); |
376 |
> |
final CountDownLatch pleaseOffer = new CountDownLatch(1); |
377 |
> |
Thread t = newStartedThread(new CheckedRunnable() { |
378 |
> |
public void realRun() throws InterruptedException { |
379 |
> |
long t0 = System.nanoTime(); |
380 |
> |
assertNull(q.poll(SHORT_DELAY_MS, MILLISECONDS)); |
381 |
> |
assertTrue(millisElapsedSince(t0) >= SHORT_DELAY_MS); |
382 |
> |
|
383 |
> |
pleaseOffer.countDown(); |
384 |
> |
t0 = System.nanoTime(); |
385 |
> |
assertSame(zero, q.poll(LONG_DELAY_MS, MILLISECONDS)); |
386 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
387 |
> |
|
388 |
> |
t0 = System.nanoTime(); |
389 |
> |
try { |
390 |
> |
q.poll(LONG_DELAY_MS, MILLISECONDS); |
391 |
> |
shouldThrow(); |
392 |
> |
} catch (InterruptedException success) {} |
393 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
394 |
> |
}}); |
395 |
> |
|
396 |
> |
assertTrue(pleaseOffer.await(MEDIUM_DELAY_MS, MILLISECONDS)); |
397 |
> |
long t0 = System.nanoTime(); |
398 |
> |
assertTrue(q.offer(zero, LONG_DELAY_MS, MILLISECONDS)); |
399 |
> |
assertTrue(millisElapsedSince(t0) < MEDIUM_DELAY_MS); |
400 |
|
|
401 |
+ |
t.interrupt(); |
402 |
+ |
awaitTermination(t, MEDIUM_DELAY_MS); |
403 |
+ |
} |
404 |
|
|
405 |
|
/** |
406 |
< |
* |
406 |
> |
* peek() returns null if no active putter |
407 |
|
*/ |
408 |
|
public void testPeek() { |
409 |
|
SynchronousQueue q = new SynchronousQueue(); |
410 |
< |
assertNull(q.peek()); |
410 |
> |
assertNull(q.peek()); |
411 |
|
} |
412 |
|
|
413 |
|
/** |
414 |
< |
* |
414 |
> |
* element() throws NSEE if no active putter |
415 |
|
*/ |
416 |
|
public void testElement() { |
417 |
|
SynchronousQueue q = new SynchronousQueue(); |
418 |
|
try { |
419 |
|
q.element(); |
420 |
|
shouldThrow(); |
421 |
< |
} |
327 |
< |
catch (NoSuchElementException success) {} |
421 |
> |
} catch (NoSuchElementException success) {} |
422 |
|
} |
423 |
|
|
424 |
|
/** |
425 |
< |
* |
425 |
> |
* remove() throws NSEE if no active putter |
426 |
|
*/ |
427 |
|
public void testRemove() { |
428 |
|
SynchronousQueue q = new SynchronousQueue(); |
429 |
|
try { |
430 |
|
q.remove(); |
431 |
|
shouldThrow(); |
432 |
< |
} catch (NoSuchElementException success){ |
339 |
< |
} |
432 |
> |
} catch (NoSuchElementException success) {} |
433 |
|
} |
434 |
|
|
435 |
|
/** |
436 |
< |
* |
436 |
> |
* remove(x) returns false |
437 |
|
*/ |
438 |
|
public void testRemoveElement() { |
439 |
|
SynchronousQueue q = new SynchronousQueue(); |
440 |
< |
assertFalse(q.remove(new Integer(0))); |
440 |
> |
assertFalse(q.remove(zero)); |
441 |
|
assertTrue(q.isEmpty()); |
442 |
|
} |
443 |
< |
|
443 |
> |
|
444 |
|
/** |
445 |
< |
* |
445 |
> |
* contains returns false |
446 |
|
*/ |
447 |
|
public void testContains() { |
448 |
|
SynchronousQueue q = new SynchronousQueue(); |
449 |
< |
assertFalse(q.contains(new Integer(0))); |
449 |
> |
assertFalse(q.contains(zero)); |
450 |
|
} |
451 |
|
|
452 |
|
/** |
453 |
< |
* |
453 |
> |
* clear ensures isEmpty |
454 |
|
*/ |
455 |
|
public void testClear() { |
456 |
|
SynchronousQueue q = new SynchronousQueue(); |
459 |
|
} |
460 |
|
|
461 |
|
/** |
462 |
< |
* |
462 |
> |
* containsAll returns false unless empty |
463 |
|
*/ |
464 |
|
public void testContainsAll() { |
465 |
|
SynchronousQueue q = new SynchronousQueue(); |
466 |
|
Integer[] empty = new Integer[0]; |
467 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
467 |
> |
assertTrue(q.containsAll(Arrays.asList(empty))); |
468 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
469 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
470 |
|
} |
471 |
|
|
472 |
|
/** |
473 |
< |
* |
473 |
> |
* retainAll returns false |
474 |
|
*/ |
475 |
|
public void testRetainAll() { |
476 |
|
SynchronousQueue q = new SynchronousQueue(); |
477 |
|
Integer[] empty = new Integer[0]; |
478 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
479 |
< |
q.retainAll(Arrays.asList(ints)); |
480 |
< |
assertFalse(q.containsAll(Arrays.asList(ints))); |
478 |
> |
assertFalse(q.retainAll(Arrays.asList(empty))); |
479 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
480 |
> |
assertFalse(q.retainAll(Arrays.asList(ints))); |
481 |
|
} |
482 |
|
|
483 |
|
/** |
484 |
< |
* |
484 |
> |
* removeAll returns false |
485 |
|
*/ |
486 |
|
public void testRemoveAll() { |
487 |
|
SynchronousQueue q = new SynchronousQueue(); |
488 |
|
Integer[] empty = new Integer[0]; |
489 |
< |
Integer[] ints = new Integer[1]; ints[0] = new Integer(0); |
490 |
< |
q.removeAll(Arrays.asList(ints)); |
489 |
> |
assertFalse(q.removeAll(Arrays.asList(empty))); |
490 |
> |
Integer[] ints = new Integer[1]; ints[0] = zero; |
491 |
|
assertFalse(q.containsAll(Arrays.asList(ints))); |
492 |
|
} |
493 |
|
|
494 |
|
|
495 |
|
/** |
496 |
< |
* |
496 |
> |
* toArray is empty |
497 |
|
*/ |
498 |
|
public void testToArray() { |
499 |
|
SynchronousQueue q = new SynchronousQueue(); |
500 |
< |
Object[] o = q.toArray(); |
500 |
> |
Object[] o = q.toArray(); |
501 |
|
assertEquals(o.length, 0); |
502 |
|
} |
503 |
|
|
504 |
|
/** |
505 |
< |
* |
505 |
> |
* toArray(a) is nulled at position 0 |
506 |
|
*/ |
507 |
|
public void testToArray2() { |
508 |
|
SynchronousQueue q = new SynchronousQueue(); |
509 |
< |
Integer[] ints = new Integer[1]; |
509 |
> |
Integer[] ints = new Integer[1]; |
510 |
|
assertNull(ints[0]); |
511 |
|
} |
512 |
< |
|
512 |
> |
|
513 |
|
/** |
514 |
< |
* |
514 |
> |
* toArray(null) throws NPE |
515 |
> |
*/ |
516 |
> |
public void testToArray_BadArg() { |
517 |
> |
SynchronousQueue q = new SynchronousQueue(); |
518 |
> |
try { |
519 |
> |
Object o[] = q.toArray(null); |
520 |
> |
shouldThrow(); |
521 |
> |
} catch (NullPointerException success) {} |
522 |
> |
} |
523 |
> |
|
524 |
> |
|
525 |
> |
/** |
526 |
> |
* iterator does not traverse any elements |
527 |
|
*/ |
528 |
|
public void testIterator() { |
529 |
|
SynchronousQueue q = new SynchronousQueue(); |
530 |
< |
Iterator it = q.iterator(); |
530 |
> |
Iterator it = q.iterator(); |
531 |
|
assertFalse(it.hasNext()); |
532 |
|
try { |
533 |
|
Object x = it.next(); |
534 |
|
shouldThrow(); |
535 |
< |
} |
430 |
< |
catch (NoSuchElementException success) {} |
535 |
> |
} catch (NoSuchElementException success) {} |
536 |
|
} |
537 |
|
|
538 |
|
/** |
539 |
< |
* |
539 |
> |
* iterator remove throws ISE |
540 |
|
*/ |
541 |
|
public void testIteratorRemove() { |
542 |
|
SynchronousQueue q = new SynchronousQueue(); |
543 |
< |
Iterator it = q.iterator(); |
543 |
> |
Iterator it = q.iterator(); |
544 |
|
try { |
545 |
|
it.remove(); |
546 |
|
shouldThrow(); |
547 |
< |
} |
443 |
< |
catch (IllegalStateException success) {} |
547 |
> |
} catch (IllegalStateException success) {} |
548 |
|
} |
549 |
|
|
550 |
|
/** |
551 |
< |
* |
551 |
> |
* toString returns a non-null string |
552 |
|
*/ |
553 |
|
public void testToString() { |
554 |
|
SynchronousQueue q = new SynchronousQueue(); |
555 |
|
String s = q.toString(); |
556 |
< |
assertTrue(s != null); |
557 |
< |
} |
556 |
> |
assertNotNull(s); |
557 |
> |
} |
558 |
|
|
559 |
|
|
560 |
|
/** |
561 |
< |
* |
561 |
> |
* offer transfers elements across Executor tasks |
562 |
|
*/ |
563 |
|
public void testOfferInExecutor() { |
564 |
|
final SynchronousQueue q = new SynchronousQueue(); |
565 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
462 |
– |
final Integer one = new Integer(1); |
566 |
|
|
567 |
< |
executor.execute(new Runnable() { |
568 |
< |
public void run() { |
569 |
< |
threadAssertFalse(q.offer(one)); |
570 |
< |
try { |
571 |
< |
threadAssertTrue(q.offer(one, MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
572 |
< |
threadAssertEquals(0, q.remainingCapacity()); |
573 |
< |
} |
574 |
< |
catch (InterruptedException e) { |
575 |
< |
threadUnexpectedException(); |
576 |
< |
} |
577 |
< |
} |
578 |
< |
}); |
567 |
> |
executor.execute(new CheckedRunnable() { |
568 |
> |
public void realRun() throws InterruptedException { |
569 |
> |
assertFalse(q.offer(one)); |
570 |
> |
assertTrue(q.offer(one, MEDIUM_DELAY_MS, MILLISECONDS)); |
571 |
> |
assertEquals(0, q.remainingCapacity()); |
572 |
> |
}}); |
573 |
> |
|
574 |
> |
executor.execute(new CheckedRunnable() { |
575 |
> |
public void realRun() throws InterruptedException { |
576 |
> |
delay(SMALL_DELAY_MS); |
577 |
> |
assertSame(one, q.take()); |
578 |
> |
}}); |
579 |
|
|
477 |
– |
executor.execute(new Runnable() { |
478 |
– |
public void run() { |
479 |
– |
try { |
480 |
– |
Thread.sleep(SMALL_DELAY_MS); |
481 |
– |
threadAssertEquals(one, q.take()); |
482 |
– |
} |
483 |
– |
catch (InterruptedException e) { |
484 |
– |
threadUnexpectedException(); |
485 |
– |
} |
486 |
– |
} |
487 |
– |
}); |
488 |
– |
|
580 |
|
joinPool(executor); |
490 |
– |
|
581 |
|
} |
582 |
|
|
583 |
|
/** |
584 |
< |
* |
584 |
> |
* poll retrieves elements across Executor threads |
585 |
|
*/ |
586 |
|
public void testPollInExecutor() { |
497 |
– |
|
587 |
|
final SynchronousQueue q = new SynchronousQueue(); |
499 |
– |
|
588 |
|
ExecutorService executor = Executors.newFixedThreadPool(2); |
589 |
+ |
executor.execute(new CheckedRunnable() { |
590 |
+ |
public void realRun() throws InterruptedException { |
591 |
+ |
assertNull(q.poll()); |
592 |
+ |
assertSame(one, q.poll(MEDIUM_DELAY_MS, MILLISECONDS)); |
593 |
+ |
assertTrue(q.isEmpty()); |
594 |
+ |
}}); |
595 |
+ |
|
596 |
+ |
executor.execute(new CheckedRunnable() { |
597 |
+ |
public void realRun() throws InterruptedException { |
598 |
+ |
delay(SHORT_DELAY_MS); |
599 |
+ |
q.put(one); |
600 |
+ |
}}); |
601 |
|
|
502 |
– |
executor.execute(new Runnable() { |
503 |
– |
public void run() { |
504 |
– |
threadAssertNull(q.poll()); |
505 |
– |
try { |
506 |
– |
threadAssertTrue(null != q.poll(MEDIUM_DELAY_MS, TimeUnit.MILLISECONDS)); |
507 |
– |
threadAssertTrue(q.isEmpty()); |
508 |
– |
} |
509 |
– |
catch (InterruptedException e) { |
510 |
– |
threadUnexpectedException(); |
511 |
– |
} |
512 |
– |
} |
513 |
– |
}); |
514 |
– |
|
515 |
– |
executor.execute(new Runnable() { |
516 |
– |
public void run() { |
517 |
– |
try { |
518 |
– |
Thread.sleep(SMALL_DELAY_MS); |
519 |
– |
q.put(new Integer(1)); |
520 |
– |
} |
521 |
– |
catch (InterruptedException e) { |
522 |
– |
threadUnexpectedException(); |
523 |
– |
} |
524 |
– |
} |
525 |
– |
}); |
526 |
– |
|
602 |
|
joinPool(executor); |
603 |
+ |
} |
604 |
+ |
|
605 |
+ |
/** |
606 |
+ |
* a deserialized serialized queue is usable |
607 |
+ |
*/ |
608 |
+ |
public void testSerialization() throws Exception { |
609 |
+ |
SynchronousQueue q = new SynchronousQueue(); |
610 |
+ |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
611 |
+ |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
612 |
+ |
out.writeObject(q); |
613 |
+ |
out.close(); |
614 |
|
|
615 |
+ |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
616 |
+ |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
617 |
+ |
SynchronousQueue r = (SynchronousQueue)in.readObject(); |
618 |
+ |
assertEquals(q.size(), r.size()); |
619 |
+ |
while (!q.isEmpty()) |
620 |
+ |
assertEquals(q.remove(), r.remove()); |
621 |
|
} |
622 |
|
|
623 |
|
/** |
624 |
< |
* |
624 |
> |
* drainTo(null) throws NPE |
625 |
|
*/ |
626 |
< |
public void testSerialization() { |
626 |
> |
public void testDrainToNull() { |
627 |
|
SynchronousQueue q = new SynchronousQueue(); |
628 |
|
try { |
629 |
< |
ByteArrayOutputStream bout = new ByteArrayOutputStream(10000); |
630 |
< |
ObjectOutputStream out = new ObjectOutputStream(new BufferedOutputStream(bout)); |
631 |
< |
out.writeObject(q); |
632 |
< |
out.close(); |
633 |
< |
|
634 |
< |
ByteArrayInputStream bin = new ByteArrayInputStream(bout.toByteArray()); |
635 |
< |
ObjectInputStream in = new ObjectInputStream(new BufferedInputStream(bin)); |
636 |
< |
SynchronousQueue r = (SynchronousQueue)in.readObject(); |
637 |
< |
assertEquals(q.size(), r.size()); |
638 |
< |
while (!q.isEmpty()) |
639 |
< |
assertEquals(q.remove(), r.remove()); |
640 |
< |
} catch(Exception e){ |
641 |
< |
unexpectedException(); |
642 |
< |
} |
629 |
> |
q.drainTo(null); |
630 |
> |
shouldThrow(); |
631 |
> |
} catch (NullPointerException success) {} |
632 |
> |
} |
633 |
> |
|
634 |
> |
/** |
635 |
> |
* drainTo(this) throws IAE |
636 |
> |
*/ |
637 |
> |
public void testDrainToSelf() { |
638 |
> |
SynchronousQueue q = new SynchronousQueue(); |
639 |
> |
try { |
640 |
> |
q.drainTo(q); |
641 |
> |
shouldThrow(); |
642 |
> |
} catch (IllegalArgumentException success) {} |
643 |
> |
} |
644 |
> |
|
645 |
> |
/** |
646 |
> |
* drainTo(c) of empty queue doesn't transfer elements |
647 |
> |
*/ |
648 |
> |
public void testDrainTo() { |
649 |
> |
SynchronousQueue q = new SynchronousQueue(); |
650 |
> |
ArrayList l = new ArrayList(); |
651 |
> |
q.drainTo(l); |
652 |
> |
assertEquals(q.size(), 0); |
653 |
> |
assertEquals(l.size(), 0); |
654 |
> |
} |
655 |
> |
|
656 |
> |
/** |
657 |
> |
* drainTo empties queue, unblocking a waiting put. |
658 |
> |
*/ |
659 |
> |
public void testDrainToWithActivePut() throws InterruptedException { |
660 |
> |
final SynchronousQueue q = new SynchronousQueue(); |
661 |
> |
Thread t = new Thread(new CheckedRunnable() { |
662 |
> |
public void realRun() throws InterruptedException { |
663 |
> |
q.put(new Integer(1)); |
664 |
> |
}}); |
665 |
> |
|
666 |
> |
t.start(); |
667 |
> |
ArrayList l = new ArrayList(); |
668 |
> |
delay(SHORT_DELAY_MS); |
669 |
> |
q.drainTo(l); |
670 |
> |
assertTrue(l.size() <= 1); |
671 |
> |
if (l.size() > 0) |
672 |
> |
assertEquals(l.get(0), new Integer(1)); |
673 |
> |
t.join(); |
674 |
> |
assertTrue(l.size() <= 1); |
675 |
> |
} |
676 |
> |
|
677 |
> |
/** |
678 |
> |
* drainTo(null, n) throws NPE |
679 |
> |
*/ |
680 |
> |
public void testDrainToNullN() { |
681 |
> |
SynchronousQueue q = new SynchronousQueue(); |
682 |
> |
try { |
683 |
> |
q.drainTo(null, 0); |
684 |
> |
shouldThrow(); |
685 |
> |
} catch (NullPointerException success) {} |
686 |
> |
} |
687 |
> |
|
688 |
> |
/** |
689 |
> |
* drainTo(this, n) throws IAE |
690 |
> |
*/ |
691 |
> |
public void testDrainToSelfN() { |
692 |
> |
SynchronousQueue q = new SynchronousQueue(); |
693 |
> |
try { |
694 |
> |
q.drainTo(q, 0); |
695 |
> |
shouldThrow(); |
696 |
> |
} catch (IllegalArgumentException success) {} |
697 |
> |
} |
698 |
> |
|
699 |
> |
/** |
700 |
> |
* drainTo(c, n) empties up to n elements of queue into c |
701 |
> |
*/ |
702 |
> |
public void testDrainToN() throws InterruptedException { |
703 |
> |
final SynchronousQueue q = new SynchronousQueue(); |
704 |
> |
Thread t1 = new Thread(new CheckedRunnable() { |
705 |
> |
public void realRun() throws InterruptedException { |
706 |
> |
q.put(one); |
707 |
> |
}}); |
708 |
> |
|
709 |
> |
Thread t2 = new Thread(new CheckedRunnable() { |
710 |
> |
public void realRun() throws InterruptedException { |
711 |
> |
q.put(two); |
712 |
> |
}}); |
713 |
> |
|
714 |
> |
t1.start(); |
715 |
> |
t2.start(); |
716 |
> |
ArrayList l = new ArrayList(); |
717 |
> |
delay(SHORT_DELAY_MS); |
718 |
> |
q.drainTo(l, 1); |
719 |
> |
assertEquals(1, l.size()); |
720 |
> |
q.drainTo(l, 1); |
721 |
> |
assertEquals(2, l.size()); |
722 |
> |
assertTrue(l.contains(one)); |
723 |
> |
assertTrue(l.contains(two)); |
724 |
> |
t1.join(); |
725 |
> |
t2.join(); |
726 |
|
} |
727 |
|
|
728 |
|
} |