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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.67 by jsr166, Fri Oct 29 06:58:56 2010 UTC vs.
Revision 1.89 by jsr166, Fri Jun 3 05:07:14 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.io.ByteArrayInputStream;
11	+	import java.io.ByteArrayOutputStream;
12	+	import java.io.ObjectInputStream;
13	+	import java.io.ObjectOutputStream;
14	+	import java.util.Arrays;
15	+	import java.util.Date;
16	+	import java.util.NoSuchElementException;
17		import java.util.PropertyPermission;
18		import java.util.concurrent.*;
19	+	import java.util.concurrent.atomic.AtomicBoolean;
20		import java.util.concurrent.atomic.AtomicReference;
21		import static java.util.concurrent.TimeUnit.MILLISECONDS;
22		import static java.util.concurrent.TimeUnit.NANOSECONDS;
#	Line 252 | Line 260 | public class JSR166TestCase extends Test
260		return 50;
261		}
262
255	–
263		/**
264		* Sets delays as multiples of SHORT_DELAY.
265		*/
#	Line 260 | Line 267 | public class JSR166TestCase extends Test
267		SHORT_DELAY_MS = getShortDelay();
268		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
269		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
270	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
270	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
271	>	}
272	>
273	>	/**
274	>	* Returns a timeout in milliseconds to be used in tests that
275	>	* verify that operations block or time out.
276	>	*/
277	>	long timeoutMillis() {
278	>	return SHORT_DELAY_MS / 4;
279	>	}
280	>
281	>	/**
282	>	* Returns a new Date instance representing a time delayMillis
283	>	* milliseconds in the future.
284	>	*/
285	>	Date delayedDate(long delayMillis) {
286	>	return new Date(System.currentTimeMillis() + delayMillis);
287		}
288
289		/**
#	Line 284 | Line 307 | public class JSR166TestCase extends Test
307		}
308
309		/**
310	+	* Extra checks that get done for all test cases.
311	+	*
312		* Triggers test case failure if any thread assertions have failed,
313		* by rethrowing, in the test harness thread, any exception recorded
314		* earlier by threadRecordFailure.
315	+	*
316	+	* Triggers test case failure if interrupt status is set in the main thread.
317		*/
318		public void tearDown() throws Exception {
319	<	Throwable t = threadFailure.get();
319	>	Throwable t = threadFailure.getAndSet(null);
320		if (t != null) {
321		if (t instanceof Error)
322		throw (Error) t;
#	Line 304 | Line 331 | public class JSR166TestCase extends Test
331		throw afe;
332		}
333		}
334	+
335	+	if (Thread.interrupted())
336	+	throw new AssertionFailedError("interrupt status set in main thread");
337		}
338
339		/**
#	Line 435 | Line 465 | public class JSR166TestCase extends Test
465		else {
466		AssertionFailedError afe =
467		new AssertionFailedError("unexpected exception: " + t);
468	<	t.initCause(t);
468	>	afe.initCause(t);
469		throw afe;
470		}
471		}
472
473		/**
474	+	* Delays, via Thread.sleep, for the given millisecond delay, but
475	+	* if the sleep is shorter than specified, may re-sleep or yield
476	+	* until time elapses.
477	+	*/
478	+	static void delay(long millis) throws InterruptedException {
479	+	long startTime = System.nanoTime();
480	+	long ns = millis * 1000 * 1000;
481	+	for (;;) {
482	+	if (millis > 0L)
483	+	Thread.sleep(millis);
484	+	else // too short to sleep
485	+	Thread.yield();
486	+	long d = ns - (System.nanoTime() - startTime);
487	+	if (d > 0L)
488	+	millis = d / (1000 * 1000);
489	+	else
490	+	break;
491	+	}
492	+	}
493	+
494	+	/**
495		* Waits out termination of a thread pool or fails doing so.
496		*/
497	<	public void joinPool(ExecutorService exec) {
497	>	void joinPool(ExecutorService exec) {
498		try {
499		exec.shutdown();
500		assertTrue("ExecutorService did not terminate in a timely manner",
501	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
501	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
502		} catch (SecurityException ok) {
503		// Allowed in case test doesn't have privs
504		} catch (InterruptedException ie) {
#	Line 455 | Line 506 | public class JSR166TestCase extends Test
506		}
507		}
508
509	+	/**
510	+	* Checks that thread does not terminate within the default
511	+	* millisecond delay of {@code timeoutMillis()}.
512	+	*/
513	+	void assertThreadStaysAlive(Thread thread) {
514	+	assertThreadStaysAlive(thread, timeoutMillis());
515	+	}
516	+
517	+	/**
518	+	* Checks that thread does not terminate within the given millisecond delay.
519	+	*/
520	+	void assertThreadStaysAlive(Thread thread, long millis) {
521	+	try {
522	+	// No need to optimize the failing case via Thread.join.
523	+	delay(millis);
524	+	assertTrue(thread.isAlive());
525	+	} catch (InterruptedException ie) {
526	+	fail("Unexpected InterruptedException");
527	+	}
528	+	}
529	+
530	+	/**
531	+	* Checks that future.get times out, with the default timeout of
532	+	* {@code timeoutMillis()}.
533	+	*/
534	+	void assertFutureTimesOut(Future future) {
535	+	assertFutureTimesOut(future, timeoutMillis());
536	+	}
537	+
538	+	/**
539	+	* Checks that future.get times out, with the given millisecond timeout.
540	+	*/
541	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
542	+	long startTime = System.nanoTime();
543	+	try {
544	+	future.get(timeoutMillis, MILLISECONDS);
545	+	shouldThrow();
546	+	} catch (TimeoutException success) {
547	+	} catch (Exception e) {
548	+	threadUnexpectedException(e);
549	+	} finally { future.cancel(true); }
550	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
551	+	}
552
553		/**
554		* Fails with message "should throw exception".
#	Line 586 | Line 680 | public class JSR166TestCase extends Test
680		*/
681		void sleep(long millis) {
682		try {
683	<	Thread.sleep(millis);
683	>	delay(millis);
684		} catch (InterruptedException ie) {
685		AssertionFailedError afe =
686		new AssertionFailedError("Unexpected InterruptedException");
#	Line 596 | Line 690 | public class JSR166TestCase extends Test
690		}
691
692		/**
693	<	* Sleeps until the timeout has elapsed, or interrupted.
600	<	* Does <em>NOT</em> throw InterruptedException.
601	<	*/
602	<	void sleepTillInterrupted(long timeoutMillis) {
603	<	try {
604	<	Thread.sleep(timeoutMillis);
605	<	} catch (InterruptedException wakeup) {}
606	<	}
607	<
608	<	/**
609	<	* Waits up to the specified number of milliseconds for the given
693	>	* Spin-waits up to the specified number of milliseconds for the given
694		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
695		*/
696		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
697	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
614	<	long t0 = System.nanoTime();
697	>	long startTime = System.nanoTime();
698		for (;;) {
699		Thread.State s = thread.getState();
700		if (s == Thread.State.BLOCKED ||
#	Line 620 | Line 703 | public class JSR166TestCase extends Test
703		return;
704		else if (s == Thread.State.TERMINATED)
705		fail("Unexpected thread termination");
706	<	else if (System.nanoTime() - t0 > timeoutNanos) {
706	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
707		threadAssertTrue(thread.isAlive());
708		return;
709		}
#	Line 629 | Line 712 | public class JSR166TestCase extends Test
712		}
713
714		/**
715	+	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
716	+	* state: BLOCKED, WAITING, or TIMED_WAITING.
717	+	*/
718	+	void waitForThreadToEnterWaitState(Thread thread) {
719	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
720	+	}
721	+
722	+	/**
723		* Returns the number of milliseconds since time given by
724		* startNanoTime, which must have been previously returned from a
725		* call to {@link System.nanoTime()}.
#	Line 636 | Line 727 | public class JSR166TestCase extends Test
727		long millisElapsedSince(long startNanoTime) {
728		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
729		}
730	<
730	>
731		/**
732		* Returns a new started daemon Thread running the given runnable.
733		*/
#	Line 658 | Line 749 | public class JSR166TestCase extends Test
749		} catch (InterruptedException ie) {
750		threadUnexpectedException(ie);
751		} finally {
752	<	if (t.isAlive()) {
752	>	if (t.getState() != Thread.State.TERMINATED) {
753		t.interrupt();
754		fail("Test timed out");
755		}
756		}
757		}
758
759	+	/**
760	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
761	+	* terminate (using {@link Thread#join(long)}), else interrupts
762	+	* the thread (in the hope that it may terminate later) and fails.
763	+	*/
764	+	void awaitTermination(Thread t) {
765	+	awaitTermination(t, LONG_DELAY_MS);
766	+	}
767	+
768		// Some convenient Runnable classes
769
770		public abstract class CheckedRunnable implements Runnable {
#	Line 727 | Line 827 | public class JSR166TestCase extends Test
827		realRun();
828		threadShouldThrow("InterruptedException");
829		} catch (InterruptedException success) {
830	+	threadAssertFalse(Thread.interrupted());
831		} catch (Throwable t) {
832		threadUnexpectedException(t);
833		}
#	Line 756 | Line 857 | public class JSR166TestCase extends Test
857		threadShouldThrow("InterruptedException");
858		return result;
859		} catch (InterruptedException success) {
860	+	threadAssertFalse(Thread.interrupted());
861		} catch (Throwable t) {
862		threadUnexpectedException(t);
863		}
#	Line 787 | Line 889 | public class JSR166TestCase extends Test
889		}};
890		}
891
892	+	public Runnable awaiter(final CountDownLatch latch) {
893	+	return new CheckedRunnable() {
894	+	public void realRun() throws InterruptedException {
895	+	await(latch);
896	+	}};
897	+	}
898	+
899	+	public void await(CountDownLatch latch) {
900	+	try {
901	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
902	+	} catch (Throwable t) {
903	+	threadUnexpectedException(t);
904	+	}
905	+	}
906	+
907	+	public void await(Semaphore semaphore) {
908	+	try {
909	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
910	+	} catch (Throwable t) {
911	+	threadUnexpectedException(t);
912	+	}
913	+	}
914	+
915	+	//     /**
916	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
917	+	//      */
918	+	//     public void await(AtomicBoolean flag) {
919	+	//         await(flag, LONG_DELAY_MS);
920	+	//     }
921	+
922	+	//     /**
923	+	//      * Spin-waits up to the specified timeout until flag becomes true.
924	+	//      */
925	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
926	+	//         long startTime = System.nanoTime();
927	+	//         while (!flag.get()) {
928	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
929	+	//                 throw new AssertionFailedError("timed out");
930	+	//             Thread.yield();
931	+	//         }
932	+	//     }
933	+
934		public static class NPETask implements Callable<String> {
935		public String call() { throw new NullPointerException(); }
936		}
#	Line 797 | Line 941 | public class JSR166TestCase extends Test
941
942		public class ShortRunnable extends CheckedRunnable {
943		protected void realRun() throws Throwable {
944	<	Thread.sleep(SHORT_DELAY_MS);
944	>	delay(SHORT_DELAY_MS);
945		}
946		}
947
948		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
949		protected void realRun() throws InterruptedException {
950	<	Thread.sleep(SHORT_DELAY_MS);
950	>	delay(SHORT_DELAY_MS);
951		}
952		}
953
954		public class SmallRunnable extends CheckedRunnable {
955		protected void realRun() throws Throwable {
956	<	Thread.sleep(SMALL_DELAY_MS);
956	>	delay(SMALL_DELAY_MS);
957		}
958		}
959
960		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
961		protected void realRun() {
962		try {
963	<	Thread.sleep(SMALL_DELAY_MS);
963	>	delay(SMALL_DELAY_MS);
964		} catch (InterruptedException ok) {}
965		}
966		}
967
968		public class SmallCallable extends CheckedCallable {
969		protected Object realCall() throws InterruptedException {
970	<	Thread.sleep(SMALL_DELAY_MS);
970	>	delay(SMALL_DELAY_MS);
971		return Boolean.TRUE;
972		}
973		}
974
975		public class MediumRunnable extends CheckedRunnable {
976		protected void realRun() throws Throwable {
977	<	Thread.sleep(MEDIUM_DELAY_MS);
977	>	delay(MEDIUM_DELAY_MS);
978		}
979		}
980
981		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
982		protected void realRun() throws InterruptedException {
983	<	Thread.sleep(MEDIUM_DELAY_MS);
983	>	delay(MEDIUM_DELAY_MS);
984		}
985		}
986
#	Line 844 | Line 988 | public class JSR166TestCase extends Test
988		return new CheckedRunnable() {
989		protected void realRun() {
990		try {
991	<	Thread.sleep(timeoutMillis);
991	>	delay(timeoutMillis);
992		} catch (InterruptedException ok) {}
993		}};
994		}
#	Line 852 | Line 996 | public class JSR166TestCase extends Test
996		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
997		protected void realRun() {
998		try {
999	<	Thread.sleep(MEDIUM_DELAY_MS);
999	>	delay(MEDIUM_DELAY_MS);
1000		} catch (InterruptedException ok) {}
1001		}
1002		}
#	Line 860 | Line 1004 | public class JSR166TestCase extends Test
1004		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1005		protected void realRun() {
1006		try {
1007	<	Thread.sleep(LONG_DELAY_MS);
1007	>	delay(LONG_DELAY_MS);
1008		} catch (InterruptedException ok) {}
1009		}
1010		}
#	Line 884 | Line 1028 | public class JSR166TestCase extends Test
1028		public boolean isDone() { return done; }
1029		public void run() {
1030		try {
1031	<	Thread.sleep(timeoutMillis);
1031	>	delay(timeoutMillis);
1032		done = true;
1033		} catch (InterruptedException ok) {}
1034		}
#	Line 895 | Line 1039 | public class JSR166TestCase extends Test
1039		public volatile boolean done = false;
1040		public void run() {
1041		try {
1042	<	Thread.sleep(SHORT_DELAY_MS);
1042	>	delay(SHORT_DELAY_MS);
1043		done = true;
1044		} catch (InterruptedException ok) {}
1045		}
#	Line 905 | Line 1049 | public class JSR166TestCase extends Test
1049		public volatile boolean done = false;
1050		public void run() {
1051		try {
1052	<	Thread.sleep(SMALL_DELAY_MS);
1052	>	delay(SMALL_DELAY_MS);
1053		done = true;
1054		} catch (InterruptedException ok) {}
1055		}
#	Line 915 | Line 1059 | public class JSR166TestCase extends Test
1059		public volatile boolean done = false;
1060		public void run() {
1061		try {
1062	<	Thread.sleep(MEDIUM_DELAY_MS);
1062	>	delay(MEDIUM_DELAY_MS);
1063		done = true;
1064		} catch (InterruptedException ok) {}
1065		}
#	Line 925 | Line 1069 | public class JSR166TestCase extends Test
1069		public volatile boolean done = false;
1070		public void run() {
1071		try {
1072	<	Thread.sleep(LONG_DELAY_MS);
1072	>	delay(LONG_DELAY_MS);
1073		done = true;
1074		} catch (InterruptedException ok) {}
1075		}
#	Line 942 | Line 1086 | public class JSR166TestCase extends Test
1086		public volatile boolean done = false;
1087		public Object call() {
1088		try {
1089	<	Thread.sleep(SMALL_DELAY_MS);
1089	>	delay(SMALL_DELAY_MS);
1090		done = true;
1091		} catch (InterruptedException ok) {}
1092		return Boolean.TRUE;
#	Line 989 | Line 1133 | public class JSR166TestCase extends Test
1133		}
1134
1135		/**
1136	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1137	<	* of throwing checked exceptions.
1136	>	* A CyclicBarrier that uses timed await and fails with
1137	>	* AssertionFailedErrors instead of throwing checked exceptions.
1138		*/
1139		public class CheckedBarrier extends CyclicBarrier {
1140		public CheckedBarrier(int parties) { super(parties); }
1141
1142		public int await() {
1143		try {
1144	<	return super.await();
1144	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1145	>	} catch (TimeoutException e) {
1146	>	throw new AssertionFailedError("timed out");
1147		} catch (Exception e) {
1148		AssertionFailedError afe =
1149		new AssertionFailedError("Unexpected exception: " + e);
#	Line 1007 | Line 1153 | public class JSR166TestCase extends Test
1153		}
1154		}
1155
1156	+	void checkEmpty(BlockingQueue q) {
1157	+	try {
1158	+	assertTrue(q.isEmpty());
1159	+	assertEquals(0, q.size());
1160	+	assertNull(q.peek());
1161	+	assertNull(q.poll());
1162	+	assertNull(q.poll(0, MILLISECONDS));
1163	+	assertEquals(q.toString(), "[]");
1164	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1165	+	assertFalse(q.iterator().hasNext());
1166	+	try {
1167	+	q.element();
1168	+	shouldThrow();
1169	+	} catch (NoSuchElementException success) {}
1170	+	try {
1171	+	q.iterator().next();
1172	+	shouldThrow();
1173	+	} catch (NoSuchElementException success) {}
1174	+	try {
1175	+	q.remove();
1176	+	shouldThrow();
1177	+	} catch (NoSuchElementException success) {}
1178	+	} catch (InterruptedException ie) {
1179	+	threadUnexpectedException(ie);
1180	+	}
1181	+	}
1182	+
1183	+	@SuppressWarnings("unchecked")
1184	+	<T> T serialClone(T o) {
1185	+	try {
1186	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1187	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1188	+	oos.writeObject(o);
1189	+	oos.flush();
1190	+	oos.close();
1191	+	ObjectInputStream ois = new ObjectInputStream
1192	+	(new ByteArrayInputStream(bos.toByteArray()));
1193	+	T clone = (T) ois.readObject();
1194	+	assertSame(o.getClass(), clone.getClass());
1195	+	return clone;
1196	+	} catch (Throwable t) {
1197	+	threadUnexpectedException(t);
1198	+	return null;
1199	+	}
1200	+	}
1201		}

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