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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.63 by jsr166, Mon Oct 11 08:30:01 2010 UTC vs.
Revision 1.88 by jsr166, Tue May 31 15:01:24 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;
23		import java.security.CodeSource;
24		import java.security.Permission;
25		import java.security.PermissionCollection;
#	Line 251 | Line 260 | public class JSR166TestCase extends Test
260		return 50;
261		}
262
254	–
263		/**
264		* Sets delays as multiples of SHORT_DELAY.
265		*/
#	Line 259 | 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 283 | 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 303 | 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 434 | 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 454 | 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 585 | 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 595 | Line 690 | public class JSR166TestCase extends Test
690		}
691
692		/**
693	<	* Sleeps until the timeout has elapsed, or interrupted.
694	<	* Does <em>NOT</em> throw InterruptedException.
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 sleepTillInterrupted(long timeoutMillis) {
697	<	try {
698	<	Thread.sleep(timeoutMillis);
699	<	} catch (InterruptedException wakeup) {}
696	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
697	>	long startTime = System.nanoTime();
698	>	for (;;) {
699	>	Thread.State s = thread.getState();
700	>	if (s == Thread.State.BLOCKED ||
701	>	s == Thread.State.WAITING ||
702	>	s == Thread.State.TIMED_WAITING)
703	>	return;
704	>	else if (s == Thread.State.TERMINATED)
705	>	fail("Unexpected thread termination");
706	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
707	>	threadAssertTrue(thread.isAlive());
708	>	return;
709	>	}
710	>	Thread.yield();
711	>	}
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()}.
726	>	*/
727	>	long millisElapsedSince(long startNanoTime) {
728	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
729		}
730
731		/**
#	Line 625 | 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 694 | 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 723 | 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 746 | Line 881 | public class JSR166TestCase extends Test
881
882		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
883		return new CheckedCallable<String>() {
884	<	public String realCall() {
884	>	protected String realCall() {
885		try {
886		latch.await();
887		} catch (InterruptedException quittingTime) {}
#	Line 754 | 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	+	//     /**
908	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
909	+	//      */
910	+	//     public void await(AtomicBoolean flag) {
911	+	//         await(flag, LONG_DELAY_MS);
912	+	//     }
913	+
914	+	//     /**
915	+	//      * Spin-waits up to the specified timeout until flag becomes true.
916	+	//      */
917	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
918	+	//         long startTime = System.nanoTime();
919	+	//         while (!flag.get()) {
920	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
921	+	//                 throw new AssertionFailedError("timed out");
922	+	//             Thread.yield();
923	+	//         }
924	+	//     }
925	+
926		public static class NPETask implements Callable<String> {
927		public String call() { throw new NullPointerException(); }
928		}
#	Line 764 | Line 933 | public class JSR166TestCase extends Test
933
934		public class ShortRunnable extends CheckedRunnable {
935		protected void realRun() throws Throwable {
936	<	Thread.sleep(SHORT_DELAY_MS);
936	>	delay(SHORT_DELAY_MS);
937		}
938		}
939
940		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
941		protected void realRun() throws InterruptedException {
942	<	Thread.sleep(SHORT_DELAY_MS);
942	>	delay(SHORT_DELAY_MS);
943		}
944		}
945
946		public class SmallRunnable extends CheckedRunnable {
947		protected void realRun() throws Throwable {
948	<	Thread.sleep(SMALL_DELAY_MS);
948	>	delay(SMALL_DELAY_MS);
949		}
950		}
951
952		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
953		protected void realRun() {
954		try {
955	<	Thread.sleep(SMALL_DELAY_MS);
955	>	delay(SMALL_DELAY_MS);
956		} catch (InterruptedException ok) {}
957		}
958		}
959
960		public class SmallCallable extends CheckedCallable {
961		protected Object realCall() throws InterruptedException {
962	<	Thread.sleep(SMALL_DELAY_MS);
962	>	delay(SMALL_DELAY_MS);
963		return Boolean.TRUE;
964		}
965		}
966
967		public class MediumRunnable extends CheckedRunnable {
968		protected void realRun() throws Throwable {
969	<	Thread.sleep(MEDIUM_DELAY_MS);
969	>	delay(MEDIUM_DELAY_MS);
970		}
971		}
972
973		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
974		protected void realRun() throws InterruptedException {
975	<	Thread.sleep(MEDIUM_DELAY_MS);
975	>	delay(MEDIUM_DELAY_MS);
976		}
977		}
978
#	Line 811 | Line 980 | public class JSR166TestCase extends Test
980		return new CheckedRunnable() {
981		protected void realRun() {
982		try {
983	<	Thread.sleep(timeoutMillis);
983	>	delay(timeoutMillis);
984		} catch (InterruptedException ok) {}
985		}};
986		}
#	Line 819 | Line 988 | public class JSR166TestCase extends Test
988		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
989		protected void realRun() {
990		try {
991	<	Thread.sleep(MEDIUM_DELAY_MS);
991	>	delay(MEDIUM_DELAY_MS);
992		} catch (InterruptedException ok) {}
993		}
994		}
#	Line 827 | Line 996 | public class JSR166TestCase extends Test
996		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
997		protected void realRun() {
998		try {
999	<	Thread.sleep(LONG_DELAY_MS);
999	>	delay(LONG_DELAY_MS);
1000		} catch (InterruptedException ok) {}
1001		}
1002		}
#	Line 851 | Line 1020 | public class JSR166TestCase extends Test
1020		public boolean isDone() { return done; }
1021		public void run() {
1022		try {
1023	<	Thread.sleep(timeoutMillis);
1023	>	delay(timeoutMillis);
1024		done = true;
1025		} catch (InterruptedException ok) {}
1026		}
#	Line 862 | Line 1031 | public class JSR166TestCase extends Test
1031		public volatile boolean done = false;
1032		public void run() {
1033		try {
1034	<	Thread.sleep(SHORT_DELAY_MS);
1034	>	delay(SHORT_DELAY_MS);
1035		done = true;
1036		} catch (InterruptedException ok) {}
1037		}
#	Line 872 | Line 1041 | public class JSR166TestCase extends Test
1041		public volatile boolean done = false;
1042		public void run() {
1043		try {
1044	<	Thread.sleep(SMALL_DELAY_MS);
1044	>	delay(SMALL_DELAY_MS);
1045		done = true;
1046		} catch (InterruptedException ok) {}
1047		}
#	Line 882 | Line 1051 | public class JSR166TestCase extends Test
1051		public volatile boolean done = false;
1052		public void run() {
1053		try {
1054	<	Thread.sleep(MEDIUM_DELAY_MS);
1054	>	delay(MEDIUM_DELAY_MS);
1055		done = true;
1056		} catch (InterruptedException ok) {}
1057		}
#	Line 892 | Line 1061 | public class JSR166TestCase extends Test
1061		public volatile boolean done = false;
1062		public void run() {
1063		try {
1064	<	Thread.sleep(LONG_DELAY_MS);
1064	>	delay(LONG_DELAY_MS);
1065		done = true;
1066		} catch (InterruptedException ok) {}
1067		}
#	Line 909 | Line 1078 | public class JSR166TestCase extends Test
1078		public volatile boolean done = false;
1079		public Object call() {
1080		try {
1081	<	Thread.sleep(SMALL_DELAY_MS);
1081	>	delay(SMALL_DELAY_MS);
1082		done = true;
1083		} catch (InterruptedException ok) {}
1084		return Boolean.TRUE;
#	Line 956 | Line 1125 | public class JSR166TestCase extends Test
1125		}
1126
1127		/**
1128	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1129	<	* of throwing checked exceptions.
1128	>	* A CyclicBarrier that uses timed await and fails with
1129	>	* AssertionFailedErrors instead of throwing checked exceptions.
1130		*/
1131		public class CheckedBarrier extends CyclicBarrier {
1132		public CheckedBarrier(int parties) { super(parties); }
1133
1134		public int await() {
1135		try {
1136	<	return super.await();
1136	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1137	>	} catch (TimeoutException e) {
1138	>	throw new AssertionFailedError("timed out");
1139		} catch (Exception e) {
1140		AssertionFailedError afe =
1141		new AssertionFailedError("Unexpected exception: " + e);
#	Line 974 | Line 1145 | public class JSR166TestCase extends Test
1145		}
1146		}
1147
1148	+	void checkEmpty(BlockingQueue q) {
1149	+	try {
1150	+	assertTrue(q.isEmpty());
1151	+	assertEquals(0, q.size());
1152	+	assertNull(q.peek());
1153	+	assertNull(q.poll());
1154	+	assertNull(q.poll(0, MILLISECONDS));
1155	+	assertEquals(q.toString(), "[]");
1156	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1157	+	assertFalse(q.iterator().hasNext());
1158	+	try {
1159	+	q.element();
1160	+	shouldThrow();
1161	+	} catch (NoSuchElementException success) {}
1162	+	try {
1163	+	q.iterator().next();
1164	+	shouldThrow();
1165	+	} catch (NoSuchElementException success) {}
1166	+	try {
1167	+	q.remove();
1168	+	shouldThrow();
1169	+	} catch (NoSuchElementException success) {}
1170	+	} catch (InterruptedException ie) {
1171	+	threadUnexpectedException(ie);
1172	+	}
1173	+	}
1174	+
1175	+	@SuppressWarnings("unchecked")
1176	+	<T> T serialClone(T o) {
1177	+	try {
1178	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1179	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1180	+	oos.writeObject(o);
1181	+	oos.flush();
1182	+	oos.close();
1183	+	ObjectInputStream ois = new ObjectInputStream
1184	+	(new ByteArrayInputStream(bos.toByteArray()));
1185	+	T clone = (T) ois.readObject();
1186	+	assertSame(o.getClass(), clone.getClass());
1187	+	return clone;
1188	+	} catch (Throwable t) {
1189	+	threadUnexpectedException(t);
1190	+	return null;
1191	+	}
1192	+	}
1193		}

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