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root/jsr166/jsr166/src/test/tck/JSR166TestCase.java

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.59 by jsr166, Wed Oct 6 02:58:04 2010 UTC vs.
Revision 1.78 by jsr166, Sat May 7 19:03:26 2011 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	+	import java.util.Arrays;
11	+	import java.util.NoSuchElementException;
12		import java.util.PropertyPermission;
13		import java.util.concurrent.*;
14		import java.util.concurrent.atomic.AtomicReference;
15		import static java.util.concurrent.TimeUnit.MILLISECONDS;
16	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
17		import java.security.CodeSource;
18		import java.security.Permission;
19		import java.security.PermissionCollection;
#	Line 96 | Line 99 | public class JSR166TestCase extends Test
99		private static final boolean useSecurityManager =
100		Boolean.getBoolean("jsr166.useSecurityManager");
101
102	+	protected static final boolean expensiveTests =
103	+	Boolean.getBoolean("jsr166.expensiveTests");
104	+
105	+	/**
106	+	* If true, report on stdout all "slow" tests, that is, ones that
107	+	* take more than profileThreshold milliseconds to execute.
108	+	*/
109	+	private static final boolean profileTests =
110	+	Boolean.getBoolean("jsr166.profileTests");
111	+
112	+	/**
113	+	* The number of milliseconds that tests are permitted for
114	+	* execution without being reported, when profileTests is set.
115	+	*/
116	+	private static final long profileThreshold =
117	+	Long.getLong("jsr166.profileThreshold", 100);
118	+
119	+	protected void runTest() throws Throwable {
120	+	if (profileTests)
121	+	runTestProfiled();
122	+	else
123	+	super.runTest();
124	+	}
125	+
126	+	protected void runTestProfiled() throws Throwable {
127	+	long t0 = System.nanoTime();
128	+	try {
129	+	super.runTest();
130	+	} finally {
131	+	long elapsedMillis =
132	+	(System.nanoTime() - t0) / (1000L * 1000L);
133	+	if (elapsedMillis >= profileThreshold)
134	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
135	+	}
136	+	}
137	+
138		/**
139		* Runs all JSR166 unit tests using junit.textui.TestRunner
140		*/
#	Line 116 | Line 155 | public class JSR166TestCase extends Test
155		System.exit(0);
156		}
157
158	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
159	+	TestSuite suite = new TestSuite();
160	+	for (Object suiteOrClass : suiteOrClasses) {
161	+	if (suiteOrClass instanceof TestSuite)
162	+	suite.addTest((TestSuite) suiteOrClass);
163	+	else if (suiteOrClass instanceof Class)
164	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
165	+	else
166	+	throw new ClassCastException("not a test suite or class");
167	+	}
168	+	return suite;
169	+	}
170	+
171		/**
172	<	* Collects all JSR166 unit tests as one suite
172	>	* Collects all JSR166 unit tests as one suite.
173		*/
174		public static Test suite() {
175	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
176	<
177	<	suite.addTest(ForkJoinPoolTest.suite());
178	<	suite.addTest(ForkJoinTaskTest.suite());
179	<	suite.addTest(RecursiveActionTest.suite());
180	<	suite.addTest(RecursiveTaskTest.suite());
181	<	suite.addTest(LinkedTransferQueueTest.suite());
182	<	suite.addTest(PhaserTest.suite());
183	<	suite.addTest(ThreadLocalRandomTest.suite());
184	<	suite.addTest(AbstractExecutorServiceTest.suite());
185	<	suite.addTest(AbstractQueueTest.suite());
186	<	suite.addTest(AbstractQueuedSynchronizerTest.suite());
187	<	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
188	<	suite.addTest(ArrayBlockingQueueTest.suite());
189	<	suite.addTest(ArrayDequeTest.suite());
190	<	suite.addTest(AtomicBooleanTest.suite());
191	<	suite.addTest(AtomicIntegerArrayTest.suite());
192	<	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
193	<	suite.addTest(AtomicIntegerTest.suite());
194	<	suite.addTest(AtomicLongArrayTest.suite());
195	<	suite.addTest(AtomicLongFieldUpdaterTest.suite());
196	<	suite.addTest(AtomicLongTest.suite());
197	<	suite.addTest(AtomicMarkableReferenceTest.suite());
198	<	suite.addTest(AtomicReferenceArrayTest.suite());
199	<	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
200	<	suite.addTest(AtomicReferenceTest.suite());
201	<	suite.addTest(AtomicStampedReferenceTest.suite());
202	<	suite.addTest(ConcurrentHashMapTest.suite());
203	<	suite.addTest(ConcurrentLinkedDequeTest.suite());
204	<	suite.addTest(ConcurrentLinkedQueueTest.suite());
205	<	suite.addTest(ConcurrentSkipListMapTest.suite());
206	<	suite.addTest(ConcurrentSkipListSubMapTest.suite());
207	<	suite.addTest(ConcurrentSkipListSetTest.suite());
208	<	suite.addTest(ConcurrentSkipListSubSetTest.suite());
209	<	suite.addTest(CopyOnWriteArrayListTest.suite());
210	<	suite.addTest(CopyOnWriteArraySetTest.suite());
211	<	suite.addTest(CountDownLatchTest.suite());
212	<	suite.addTest(CyclicBarrierTest.suite());
213	<	suite.addTest(DelayQueueTest.suite());
214	<	suite.addTest(EntryTest.suite());
215	<	suite.addTest(ExchangerTest.suite());
216	<	suite.addTest(ExecutorsTest.suite());
217	<	suite.addTest(ExecutorCompletionServiceTest.suite());
218	<	suite.addTest(FutureTaskTest.suite());
219	<	suite.addTest(LinkedBlockingDequeTest.suite());
220	<	suite.addTest(LinkedBlockingQueueTest.suite());
221	<	suite.addTest(LinkedListTest.suite());
222	<	suite.addTest(LockSupportTest.suite());
223	<	suite.addTest(PriorityBlockingQueueTest.suite());
224	<	suite.addTest(PriorityQueueTest.suite());
225	<	suite.addTest(ReentrantLockTest.suite());
226	<	suite.addTest(ReentrantReadWriteLockTest.suite());
227	<	suite.addTest(ScheduledExecutorTest.suite());
228	<	suite.addTest(ScheduledExecutorSubclassTest.suite());
229	<	suite.addTest(SemaphoreTest.suite());
230	<	suite.addTest(SynchronousQueueTest.suite());
231	<	suite.addTest(SystemTest.suite());
232	<	suite.addTest(ThreadLocalTest.suite());
233	<	suite.addTest(ThreadPoolExecutorTest.suite());
234	<	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
235	<	suite.addTest(ThreadTest.suite());
236	<	suite.addTest(TimeUnitTest.suite());
237	<	suite.addTest(TreeMapTest.suite());
238	<	suite.addTest(TreeSetTest.suite());
239	<	suite.addTest(TreeSubMapTest.suite());
188	<	suite.addTest(TreeSubSetTest.suite());
189	<
190	<	return suite;
175	>	return newTestSuite(
176	>	ForkJoinPoolTest.suite(),
177	>	ForkJoinTaskTest.suite(),
178	>	RecursiveActionTest.suite(),
179	>	RecursiveTaskTest.suite(),
180	>	LinkedTransferQueueTest.suite(),
181	>	PhaserTest.suite(),
182	>	ThreadLocalRandomTest.suite(),
183	>	AbstractExecutorServiceTest.suite(),
184	>	AbstractQueueTest.suite(),
185	>	AbstractQueuedSynchronizerTest.suite(),
186	>	AbstractQueuedLongSynchronizerTest.suite(),
187	>	ArrayBlockingQueueTest.suite(),
188	>	ArrayDequeTest.suite(),
189	>	AtomicBooleanTest.suite(),
190	>	AtomicIntegerArrayTest.suite(),
191	>	AtomicIntegerFieldUpdaterTest.suite(),
192	>	AtomicIntegerTest.suite(),
193	>	AtomicLongArrayTest.suite(),
194	>	AtomicLongFieldUpdaterTest.suite(),
195	>	AtomicLongTest.suite(),
196	>	AtomicMarkableReferenceTest.suite(),
197	>	AtomicReferenceArrayTest.suite(),
198	>	AtomicReferenceFieldUpdaterTest.suite(),
199	>	AtomicReferenceTest.suite(),
200	>	AtomicStampedReferenceTest.suite(),
201	>	ConcurrentHashMapTest.suite(),
202	>	ConcurrentLinkedDequeTest.suite(),
203	>	ConcurrentLinkedQueueTest.suite(),
204	>	ConcurrentSkipListMapTest.suite(),
205	>	ConcurrentSkipListSubMapTest.suite(),
206	>	ConcurrentSkipListSetTest.suite(),
207	>	ConcurrentSkipListSubSetTest.suite(),
208	>	CopyOnWriteArrayListTest.suite(),
209	>	CopyOnWriteArraySetTest.suite(),
210	>	CountDownLatchTest.suite(),
211	>	CyclicBarrierTest.suite(),
212	>	DelayQueueTest.suite(),
213	>	EntryTest.suite(),
214	>	ExchangerTest.suite(),
215	>	ExecutorsTest.suite(),
216	>	ExecutorCompletionServiceTest.suite(),
217	>	FutureTaskTest.suite(),
218	>	LinkedBlockingDequeTest.suite(),
219	>	LinkedBlockingQueueTest.suite(),
220	>	LinkedListTest.suite(),
221	>	LockSupportTest.suite(),
222	>	PriorityBlockingQueueTest.suite(),
223	>	PriorityQueueTest.suite(),
224	>	ReentrantLockTest.suite(),
225	>	ReentrantReadWriteLockTest.suite(),
226	>	ScheduledExecutorTest.suite(),
227	>	ScheduledExecutorSubclassTest.suite(),
228	>	SemaphoreTest.suite(),
229	>	SynchronousQueueTest.suite(),
230	>	SystemTest.suite(),
231	>	ThreadLocalTest.suite(),
232	>	ThreadPoolExecutorTest.suite(),
233	>	ThreadPoolExecutorSubclassTest.suite(),
234	>	ThreadTest.suite(),
235	>	TimeUnitTest.suite(),
236	>	TreeMapTest.suite(),
237	>	TreeSetTest.suite(),
238	>	TreeSubMapTest.suite(),
239	>	TreeSubSetTest.suite());
240		}
241
242
#	Line 213 | Line 262 | public class JSR166TestCase extends Test
262		SHORT_DELAY_MS = getShortDelay();
263		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
264		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
265	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
265	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
266		}
267
268		/**
#	Line 242 | Line 291 | public class JSR166TestCase extends Test
291		* earlier by threadRecordFailure.
292		*/
293		public void tearDown() throws Exception {
294	<	Throwable t = threadFailure.get();
294	>	Throwable t = threadFailure.getAndSet(null);
295		if (t != null) {
296		if (t instanceof Error)
297		throw (Error) t;
#	Line 394 | Line 443 | public class JSR166TestCase extends Test
443		}
444
445		/**
446	+	* Delays, via Thread.sleep for the given millisecond delay, but
447	+	* if the sleep is shorter than specified, may re-sleep or yield
448	+	* until time elapses.
449	+	*/
450	+	public static void delay(long ms) throws InterruptedException {
451	+	long startTime = System.nanoTime();
452	+	long ns = ms * 1000 * 1000;
453	+	for (;;) {
454	+	if (ms > 0L)
455	+	Thread.sleep(ms);
456	+	else // too short to sleep
457	+	Thread.yield();
458	+	long d = ns - (System.nanoTime() - startTime);
459	+	if (d > 0L)
460	+	ms = d / (1000 * 1000);
461	+	else
462	+	break;
463	+	}
464	+	}
465	+
466	+	/**
467		* Waits out termination of a thread pool or fails doing so.
468		*/
469		public void joinPool(ExecutorService exec) {
470		try {
471		exec.shutdown();
472		assertTrue("ExecutorService did not terminate in a timely manner",
473	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
473	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
474		} catch (SecurityException ok) {
475		// Allowed in case test doesn't have privs
476		} catch (InterruptedException ie) {
#	Line 408 | Line 478 | public class JSR166TestCase extends Test
478		}
479		}
480
481	+	/**
482	+	* Checks that thread does not terminate within timeoutMillis
483	+	* milliseconds (that is, Thread.join times out).
484	+	*/
485	+	public void assertThreadJoinTimesOut(Thread thread, long timeoutMillis) {
486	+	try {
487	+	long startTime = System.nanoTime();
488	+	thread.join(timeoutMillis);
489	+	assertTrue(thread.isAlive());
490	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
491	+	} catch (InterruptedException ie) {
492	+	fail("Unexpected InterruptedException");
493	+	}
494	+	}
495
496		/**
497		* Fails with message "should throw exception".
#	Line 534 | Line 618 | public class JSR166TestCase extends Test
618		}
619
620		/**
621	+	* Sleeps until the given time has elapsed.
622	+	* Throws AssertionFailedError if interrupted.
623	+	*/
624	+	void sleep(long millis) {
625	+	try {
626	+	delay(millis);
627	+	} catch (InterruptedException ie) {
628	+	AssertionFailedError afe =
629	+	new AssertionFailedError("Unexpected InterruptedException");
630	+	afe.initCause(ie);
631	+	throw afe;
632	+	}
633	+	}
634	+
635	+	/**
636		* Sleeps until the timeout has elapsed, or interrupted.
637		* Does <em>NOT</em> throw InterruptedException.
638		*/
#	Line 544 | Line 643 | public class JSR166TestCase extends Test
643		}
644
645		/**
646	+	* Waits up to the specified number of milliseconds for the given
647	+	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
648	+	*/
649	+	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
650	+	long timeoutNanos = timeoutMillis * 1000L * 1000L;
651	+	long t0 = System.nanoTime();
652	+	for (;;) {
653	+	Thread.State s = thread.getState();
654	+	if (s == Thread.State.BLOCKED ||
655	+	s == Thread.State.WAITING ||
656	+	s == Thread.State.TIMED_WAITING)
657	+	return;
658	+	else if (s == Thread.State.TERMINATED)
659	+	fail("Unexpected thread termination");
660	+	else if (System.nanoTime() - t0 > timeoutNanos) {
661	+	threadAssertTrue(thread.isAlive());
662	+	return;
663	+	}
664	+	Thread.yield();
665	+	}
666	+	}
667	+
668	+	/**
669	+	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
670	+	* state: BLOCKED, WAITING, or TIMED_WAITING.
671	+	*/
672	+	void waitForThreadToEnterWaitState(Thread thread) {
673	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
674	+	}
675	+
676	+	/**
677	+	* Returns the number of milliseconds since time given by
678	+	* startNanoTime, which must have been previously returned from a
679	+	* call to {@link System.nanoTime()}.
680	+	*/
681	+	long millisElapsedSince(long startNanoTime) {
682	+	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
683	+	}
684	+
685	+	/**
686		* Returns a new started daemon Thread running the given runnable.
687		*/
688		Thread newStartedThread(Runnable runnable) {
#	Line 571 | Line 710 | public class JSR166TestCase extends Test
710		}
711		}
712
713	+	/**
714	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
715	+	* terminate (using {@link Thread#join(long)}), else interrupts
716	+	* the thread (in the hope that it may terminate later) and fails.
717	+	*/
718	+	void awaitTermination(Thread t) {
719	+	awaitTermination(t, LONG_DELAY_MS);
720	+	}
721	+
722		// Some convenient Runnable classes
723
724		public abstract class CheckedRunnable implements Runnable {
#	Line 685 | Line 833 | public class JSR166TestCase extends Test
833
834		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
835		return new CheckedCallable<String>() {
836	<	public String realCall() {
836	>	protected String realCall() {
837		try {
838		latch.await();
839		} catch (InterruptedException quittingTime) {}
#	Line 693 | Line 841 | public class JSR166TestCase extends Test
841		}};
842		}
843
844	+	public Runnable awaiter(final CountDownLatch latch) {
845	+	return new CheckedRunnable() {
846	+	public void realRun() throws InterruptedException {
847	+	latch.await();
848	+	}};
849	+	}
850	+
851		public static class NPETask implements Callable<String> {
852		public String call() { throw new NullPointerException(); }
853		}
#	Line 703 | Line 858 | public class JSR166TestCase extends Test
858
859		public class ShortRunnable extends CheckedRunnable {
860		protected void realRun() throws Throwable {
861	<	Thread.sleep(SHORT_DELAY_MS);
861	>	delay(SHORT_DELAY_MS);
862		}
863		}
864
865		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
866		protected void realRun() throws InterruptedException {
867	<	Thread.sleep(SHORT_DELAY_MS);
867	>	delay(SHORT_DELAY_MS);
868		}
869		}
870
871		public class SmallRunnable extends CheckedRunnable {
872		protected void realRun() throws Throwable {
873	<	Thread.sleep(SMALL_DELAY_MS);
873	>	delay(SMALL_DELAY_MS);
874		}
875		}
876
877		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
878		protected void realRun() {
879		try {
880	<	Thread.sleep(SMALL_DELAY_MS);
880	>	delay(SMALL_DELAY_MS);
881		} catch (InterruptedException ok) {}
882		}
883		}
884
885		public class SmallCallable extends CheckedCallable {
886		protected Object realCall() throws InterruptedException {
887	<	Thread.sleep(SMALL_DELAY_MS);
887	>	delay(SMALL_DELAY_MS);
888		return Boolean.TRUE;
889		}
890		}
891
892		public class MediumRunnable extends CheckedRunnable {
893		protected void realRun() throws Throwable {
894	<	Thread.sleep(MEDIUM_DELAY_MS);
894	>	delay(MEDIUM_DELAY_MS);
895		}
896		}
897
898		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
899		protected void realRun() throws InterruptedException {
900	<	Thread.sleep(MEDIUM_DELAY_MS);
900	>	delay(MEDIUM_DELAY_MS);
901		}
902		}
903
904	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
905	+	return new CheckedRunnable() {
906	+	protected void realRun() {
907	+	try {
908	+	delay(timeoutMillis);
909	+	} catch (InterruptedException ok) {}
910	+	}};
911	+	}
912	+
913		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
914		protected void realRun() {
915		try {
916	<	Thread.sleep(MEDIUM_DELAY_MS);
916	>	delay(MEDIUM_DELAY_MS);
917		} catch (InterruptedException ok) {}
918		}
919		}
#	Line 757 | Line 921 | public class JSR166TestCase extends Test
921		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
922		protected void realRun() {
923		try {
924	<	Thread.sleep(LONG_DELAY_MS);
924	>	delay(LONG_DELAY_MS);
925		} catch (InterruptedException ok) {}
926		}
927		}
#	Line 771 | Line 935 | public class JSR166TestCase extends Test
935		}
936		}
937
938	+	public interface TrackedRunnable extends Runnable {
939	+	boolean isDone();
940	+	}
941	+
942	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
943	+	return new TrackedRunnable() {
944	+	private volatile boolean done = false;
945	+	public boolean isDone() { return done; }
946	+	public void run() {
947	+	try {
948	+	delay(timeoutMillis);
949	+	done = true;
950	+	} catch (InterruptedException ok) {}
951	+	}
952	+	};
953	+	}
954	+
955		public static class TrackedShortRunnable implements Runnable {
956		public volatile boolean done = false;
957		public void run() {
958		try {
959	<	Thread.sleep(SMALL_DELAY_MS);
959	>	delay(SHORT_DELAY_MS);
960	>	done = true;
961	>	} catch (InterruptedException ok) {}
962	>	}
963	>	}
964	>
965	>	public static class TrackedSmallRunnable implements Runnable {
966	>	public volatile boolean done = false;
967	>	public void run() {
968	>	try {
969	>	delay(SMALL_DELAY_MS);
970		done = true;
971		} catch (InterruptedException ok) {}
972		}
#	Line 785 | Line 976 | public class JSR166TestCase extends Test
976		public volatile boolean done = false;
977		public void run() {
978		try {
979	<	Thread.sleep(MEDIUM_DELAY_MS);
979	>	delay(MEDIUM_DELAY_MS);
980		done = true;
981		} catch (InterruptedException ok) {}
982		}
#	Line 795 | Line 986 | public class JSR166TestCase extends Test
986		public volatile boolean done = false;
987		public void run() {
988		try {
989	<	Thread.sleep(LONG_DELAY_MS);
989	>	delay(LONG_DELAY_MS);
990		done = true;
991		} catch (InterruptedException ok) {}
992		}
#	Line 812 | Line 1003 | public class JSR166TestCase extends Test
1003		public volatile boolean done = false;
1004		public Object call() {
1005		try {
1006	<	Thread.sleep(SMALL_DELAY_MS);
1006	>	delay(SMALL_DELAY_MS);
1007		done = true;
1008		} catch (InterruptedException ok) {}
1009		return Boolean.TRUE;
#	Line 858 | Line 1049 | public class JSR166TestCase extends Test
1049		ThreadPoolExecutor executor) {}
1050		}
1051
1052	+	/**
1053	+	* A CyclicBarrier that fails with AssertionFailedErrors instead
1054	+	* of throwing checked exceptions.
1055	+	*/
1056	+	public class CheckedBarrier extends CyclicBarrier {
1057	+	public CheckedBarrier(int parties) { super(parties); }
1058	+
1059	+	public int await() {
1060	+	try {
1061	+	return super.await();
1062	+	} catch (Exception e) {
1063	+	AssertionFailedError afe =
1064	+	new AssertionFailedError("Unexpected exception: " + e);
1065	+	afe.initCause(e);
1066	+	throw afe;
1067	+	}
1068	+	}
1069	+	}
1070	+
1071	+	public void checkEmpty(BlockingQueue q) {
1072	+	try {
1073	+	assertTrue(q.isEmpty());
1074	+	assertEquals(0, q.size());
1075	+	assertNull(q.peek());
1076	+	assertNull(q.poll());
1077	+	assertNull(q.poll(0, MILLISECONDS));
1078	+	assertEquals(q.toString(), "[]");
1079	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1080	+	assertFalse(q.iterator().hasNext());
1081	+	try {
1082	+	q.element();
1083	+	shouldThrow();
1084	+	} catch (NoSuchElementException success) {}
1085	+	try {
1086	+	q.iterator().next();
1087	+	shouldThrow();
1088	+	} catch (NoSuchElementException success) {}
1089	+	try {
1090	+	q.remove();
1091	+	shouldThrow();
1092	+	} catch (NoSuchElementException success) {}
1093	+	} catch (InterruptedException ie) {
1094	+	threadUnexpectedException(ie);
1095	+	}
1096	+	}
1097	+
1098		}

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