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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.70 by jsr166, Sun Nov 21 19:04:45 2010 UTC vs.
Revision 1.104 by dl, Thu Mar 21 00:26:43 2013 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.lang.management.ManagementFactory;
15	+	import java.lang.management.ThreadInfo;
16	+	import java.lang.reflect.Method;
17	+	import java.util.ArrayList;
18	+	import java.util.Arrays;
19	+	import java.util.Date;
20	+	import java.util.Enumeration;
21	+	import java.util.List;
22	+	import java.util.NoSuchElementException;
23		import java.util.PropertyPermission;
24		import java.util.concurrent.*;
25	+	import java.util.concurrent.atomic.AtomicBoolean;
26		import java.util.concurrent.atomic.AtomicReference;
27		import static java.util.concurrent.TimeUnit.MILLISECONDS;
28		import static java.util.concurrent.TimeUnit.NANOSECONDS;
#	Line 61 | Line 75 | import java.security.SecurityPermission;
75		*
76		* </ol>
77		*
78	<	* <p> <b>Other notes</b>
78	>	* <p><b>Other notes</b>
79		* <ul>
80		*
81		* <li> Usually, there is one testcase method per JSR166 method
#	Line 134 | Line 148 | public class JSR166TestCase extends Test
148		}
149
150		/**
151	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
151	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
152	>	* Optional command line arg provides the number of iterations to
153	>	* repeat running the tests.
154		*/
155		public static void main(String[] args) {
156		if (useSecurityManager) {
#	Line 166 | Line 182 | public class JSR166TestCase extends Test
182		return suite;
183		}
184
185	+	public static void addNamedTestClasses(TestSuite suite,
186	+	String... testClassNames) {
187	+	for (String testClassName : testClassNames) {
188	+	try {
189	+	Class<?> testClass = Class.forName(testClassName);
190	+	Method m = testClass.getDeclaredMethod("suite",
191	+	new Class<?>[0]);
192	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
193	+	} catch (Exception e) {
194	+	throw new Error("Missing test class", e);
195	+	}
196	+	}
197	+	}
198	+
199	+	public static final double JAVA_CLASS_VERSION;
200	+	static {
201	+	try {
202	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
203	+	new java.security.PrivilegedAction<Double>() {
204	+	public Double run() {
205	+	return Double.valueOf(System.getProperty("java.class.version"));}});
206	+	} catch (Throwable t) {
207	+	throw new Error(t);
208	+	}
209	+	}
210	+
211	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
212	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
213	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
214	+
215		/**
216		* Collects all JSR166 unit tests as one suite.
217		*/
218		public static Test suite() {
219	<	return newTestSuite(
219	>	// Java7+ test classes
220	>	TestSuite suite = newTestSuite(
221		ForkJoinPoolTest.suite(),
222		ForkJoinTaskTest.suite(),
223		RecursiveActionTest.suite(),
#	Line 235 | Line 282 | public class JSR166TestCase extends Test
282		TreeSetTest.suite(),
283		TreeSubMapTest.suite(),
284		TreeSubSetTest.suite());
285	+
286	+	// Java8+ test classes
287	+	if (atLeastJava8()) {
288	+	String[] java8TestClassNames = {
289	+	"CompletableFutureTest",
290	+	"CountedCompleterTest",
291	+	"DoubleAccumulatorTest",
292	+	"DoubleAdderTest",
293	+	"ForkJoinPool8Test",
294	+	"LongAccumulatorTest",
295	+	"LongAdderTest",
296	+	"StampedLockTest",
297	+	};
298	+	addNamedTestClasses(suite, java8TestClassNames);
299	+	}
300	+
301	+	return suite;
302		}
303
304
#	Line 252 | Line 316 | public class JSR166TestCase extends Test
316		return 50;
317		}
318
255	–
319		/**
320		* Sets delays as multiples of SHORT_DELAY.
321		*/
#	Line 260 | Line 323 | public class JSR166TestCase extends Test
323		SHORT_DELAY_MS = getShortDelay();
324		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
325		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
326	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
326	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
327	>	}
328	>
329	>	/**
330	>	* Returns a timeout in milliseconds to be used in tests that
331	>	* verify that operations block or time out.
332	>	*/
333	>	long timeoutMillis() {
334	>	return SHORT_DELAY_MS / 4;
335	>	}
336	>
337	>	/**
338	>	* Returns a new Date instance representing a time delayMillis
339	>	* milliseconds in the future.
340	>	*/
341	>	Date delayedDate(long delayMillis) {
342	>	return new Date(System.currentTimeMillis() + delayMillis);
343		}
344
345		/**
#	Line 284 | Line 363 | public class JSR166TestCase extends Test
363		}
364
365		/**
366	+	* Extra checks that get done for all test cases.
367	+	*
368		* Triggers test case failure if any thread assertions have failed,
369		* by rethrowing, in the test harness thread, any exception recorded
370		* earlier by threadRecordFailure.
371	+	*
372	+	* Triggers test case failure if interrupt status is set in the main thread.
373		*/
374		public void tearDown() throws Exception {
375		Throwable t = threadFailure.getAndSet(null);
#	Line 304 | Line 387 | public class JSR166TestCase extends Test
387		throw afe;
388		}
389		}
390	+
391	+	if (Thread.interrupted())
392	+	throw new AssertionFailedError("interrupt status set in main thread");
393	+
394	+	checkForkJoinPoolThreadLeaks();
395	+	}
396	+
397	+	/**
398	+	* Find missing try { ... } finally { joinPool(e); }
399	+	*/
400	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
401	+	Thread[] survivors = new Thread[5];
402	+	int count = Thread.enumerate(survivors);
403	+	for (int i = 0; i < count; i++) {
404	+	Thread thread = survivors[i];
405	+	String name = thread.getName();
406	+	if (name.startsWith("ForkJoinPool-")) {
407	+	// give thread some time to terminate
408	+	thread.join(LONG_DELAY_MS);
409	+	if (!thread.isAlive()) continue;
410	+	thread.stop();
411	+	throw new AssertionFailedError
412	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
413	+	toString(), name));
414	+	}
415	+	}
416		}
417
418		/**
#	Line 435 | Line 544 | public class JSR166TestCase extends Test
544		else {
545		AssertionFailedError afe =
546		new AssertionFailedError("unexpected exception: " + t);
547	<	t.initCause(t);
547	>	afe.initCause(t);
548		throw afe;
549		}
550		}
551
552		/**
553	+	* Delays, via Thread.sleep, for the given millisecond delay, but
554	+	* if the sleep is shorter than specified, may re-sleep or yield
555	+	* until time elapses.
556	+	*/
557	+	static void delay(long millis) throws InterruptedException {
558	+	long startTime = System.nanoTime();
559	+	long ns = millis * 1000 * 1000;
560	+	for (;;) {
561	+	if (millis > 0L)
562	+	Thread.sleep(millis);
563	+	else // too short to sleep
564	+	Thread.yield();
565	+	long d = ns - (System.nanoTime() - startTime);
566	+	if (d > 0L)
567	+	millis = d / (1000 * 1000);
568	+	else
569	+	break;
570	+	}
571	+	}
572	+
573	+	/**
574		* Waits out termination of a thread pool or fails doing so.
575		*/
576	<	public void joinPool(ExecutorService exec) {
576	>	void joinPool(ExecutorService exec) {
577		try {
578		exec.shutdown();
579		assertTrue("ExecutorService did not terminate in a timely manner",
580	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
580	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
581		} catch (SecurityException ok) {
582		// Allowed in case test doesn't have privs
583		} catch (InterruptedException ie) {
#	Line 455 | Line 585 | public class JSR166TestCase extends Test
585		}
586		}
587
588	+	/**
589	+	* A debugging tool to print all stack traces, as jstack does.
590	+	*/
591	+	static void printAllStackTraces() {
592	+	for (ThreadInfo info :
593	+	ManagementFactory.getThreadMXBean()
594	+	.dumpAllThreads(true, true))
595	+	System.err.print(info);
596	+	}
597	+
598	+	/**
599	+	* Checks that thread does not terminate within the default
600	+	* millisecond delay of {@code timeoutMillis()}.
601	+	*/
602	+	void assertThreadStaysAlive(Thread thread) {
603	+	assertThreadStaysAlive(thread, timeoutMillis());
604	+	}
605	+
606	+	/**
607	+	* Checks that thread does not terminate within the given millisecond delay.
608	+	*/
609	+	void assertThreadStaysAlive(Thread thread, long millis) {
610	+	try {
611	+	// No need to optimize the failing case via Thread.join.
612	+	delay(millis);
613	+	assertTrue(thread.isAlive());
614	+	} catch (InterruptedException ie) {
615	+	fail("Unexpected InterruptedException");
616	+	}
617	+	}
618	+
619	+	/**
620	+	* Checks that the threads do not terminate within the default
621	+	* millisecond delay of {@code timeoutMillis()}.
622	+	*/
623	+	void assertThreadsStayAlive(Thread... threads) {
624	+	assertThreadsStayAlive(timeoutMillis(), threads);
625	+	}
626	+
627	+	/**
628	+	* Checks that the threads do not terminate within the given millisecond delay.
629	+	*/
630	+	void assertThreadsStayAlive(long millis, Thread... threads) {
631	+	try {
632	+	// No need to optimize the failing case via Thread.join.
633	+	delay(millis);
634	+	for (Thread thread : threads)
635	+	assertTrue(thread.isAlive());
636	+	} catch (InterruptedException ie) {
637	+	fail("Unexpected InterruptedException");
638	+	}
639	+	}
640	+
641	+	/**
642	+	* Checks that future.get times out, with the default timeout of
643	+	* {@code timeoutMillis()}.
644	+	*/
645	+	void assertFutureTimesOut(Future future) {
646	+	assertFutureTimesOut(future, timeoutMillis());
647	+	}
648	+
649	+	/**
650	+	* Checks that future.get times out, with the given millisecond timeout.
651	+	*/
652	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
653	+	long startTime = System.nanoTime();
654	+	try {
655	+	future.get(timeoutMillis, MILLISECONDS);
656	+	shouldThrow();
657	+	} catch (TimeoutException success) {
658	+	} catch (Exception e) {
659	+	threadUnexpectedException(e);
660	+	} finally { future.cancel(true); }
661	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
662	+	}
663
664		/**
665		* Fails with message "should throw exception".
#	Line 507 | Line 712 | public class JSR166TestCase extends Test
712		SecurityManager sm = System.getSecurityManager();
713		if (sm == null) {
714		r.run();
715	+	}
716	+	runWithSecurityManagerWithPermissions(r, permissions);
717	+	}
718	+
719	+	/**
720	+	* Runs Runnable r with a security policy that permits precisely
721	+	* the specified permissions.  If there is no current security
722	+	* manager, a temporary one is set for the duration of the
723	+	* Runnable.  We require that any security manager permit
724	+	* getPolicy/setPolicy.
725	+	*/
726	+	public void runWithSecurityManagerWithPermissions(Runnable r,
727	+	Permission... permissions) {
728	+	SecurityManager sm = System.getSecurityManager();
729	+	if (sm == null) {
730		Policy savedPolicy = Policy.getPolicy();
731		try {
732		Policy.setPolicy(permissivePolicy());
733		System.setSecurityManager(new SecurityManager());
734	<	runWithPermissions(r, permissions);
734	>	runWithSecurityManagerWithPermissions(r, permissions);
735		} finally {
736		System.setSecurityManager(null);
737		Policy.setPolicy(savedPolicy);
#	Line 559 | Line 779 | public class JSR166TestCase extends Test
779		return perms.implies(p);
780		}
781		public void refresh() {}
782	+	public String toString() {
783	+	List<Permission> ps = new ArrayList<Permission>();
784	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
785	+	ps.add(e.nextElement());
786	+	return "AdjustablePolicy with permissions " + ps;
787	+	}
788		}
789
790		/**
#	Line 586 | Line 812 | public class JSR166TestCase extends Test
812		*/
813		void sleep(long millis) {
814		try {
815	<	Thread.sleep(millis);
815	>	delay(millis);
816		} catch (InterruptedException ie) {
817		AssertionFailedError afe =
818		new AssertionFailedError("Unexpected InterruptedException");
#	Line 596 | Line 822 | public class JSR166TestCase extends Test
822		}
823
824		/**
825	<	* 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
825	>	* Spin-waits up to the specified number of milliseconds for the given
826		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
827		*/
828		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
829	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
614	<	long t0 = System.nanoTime();
829	>	long startTime = System.nanoTime();
830		for (;;) {
831		Thread.State s = thread.getState();
832		if (s == Thread.State.BLOCKED ||
#	Line 620 | Line 835 | public class JSR166TestCase extends Test
835		return;
836		else if (s == Thread.State.TERMINATED)
837		fail("Unexpected thread termination");
838	<	else if (System.nanoTime() - t0 > timeoutNanos) {
838	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
839		threadAssertTrue(thread.isAlive());
840		return;
841		}
#	Line 629 | Line 844 | public class JSR166TestCase extends Test
844		}
845
846		/**
847	+	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
848	+	* state: BLOCKED, WAITING, or TIMED_WAITING.
849	+	*/
850	+	void waitForThreadToEnterWaitState(Thread thread) {
851	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
852	+	}
853	+
854	+	/**
855		* Returns the number of milliseconds since time given by
856		* startNanoTime, which must have been previously returned from a
857		* call to {@link System.nanoTime()}.
#	Line 658 | Line 881 | public class JSR166TestCase extends Test
881		} catch (InterruptedException ie) {
882		threadUnexpectedException(ie);
883		} finally {
884	<	if (t.isAlive()) {
884	>	if (t.getState() != Thread.State.TERMINATED) {
885		t.interrupt();
886		fail("Test timed out");
887		}
888		}
889		}
890
891	+	/**
892	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
893	+	* terminate (using {@link Thread#join(long)}), else interrupts
894	+	* the thread (in the hope that it may terminate later) and fails.
895	+	*/
896	+	void awaitTermination(Thread t) {
897	+	awaitTermination(t, LONG_DELAY_MS);
898	+	}
899	+
900		// Some convenient Runnable classes
901
902		public abstract class CheckedRunnable implements Runnable {
#	Line 727 | Line 959 | public class JSR166TestCase extends Test
959		realRun();
960		threadShouldThrow("InterruptedException");
961		} catch (InterruptedException success) {
962	+	threadAssertFalse(Thread.interrupted());
963		} catch (Throwable t) {
964		threadUnexpectedException(t);
965		}
#	Line 756 | Line 989 | public class JSR166TestCase extends Test
989		threadShouldThrow("InterruptedException");
990		return result;
991		} catch (InterruptedException success) {
992	+	threadAssertFalse(Thread.interrupted());
993		} catch (Throwable t) {
994		threadUnexpectedException(t);
995		}
#	Line 787 | Line 1021 | public class JSR166TestCase extends Test
1021		}};
1022		}
1023
1024	+	public Runnable awaiter(final CountDownLatch latch) {
1025	+	return new CheckedRunnable() {
1026	+	public void realRun() throws InterruptedException {
1027	+	await(latch);
1028	+	}};
1029	+	}
1030	+
1031	+	public void await(CountDownLatch latch) {
1032	+	try {
1033	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1034	+	} catch (Throwable t) {
1035	+	threadUnexpectedException(t);
1036	+	}
1037	+	}
1038	+
1039	+	public void await(Semaphore semaphore) {
1040	+	try {
1041	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1042	+	} catch (Throwable t) {
1043	+	threadUnexpectedException(t);
1044	+	}
1045	+	}
1046	+
1047	+	//     /**
1048	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1049	+	//      */
1050	+	//     public void await(AtomicBoolean flag) {
1051	+	//         await(flag, LONG_DELAY_MS);
1052	+	//     }
1053	+
1054	+	//     /**
1055	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1056	+	//      */
1057	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1058	+	//         long startTime = System.nanoTime();
1059	+	//         while (!flag.get()) {
1060	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1061	+	//                 throw new AssertionFailedError("timed out");
1062	+	//             Thread.yield();
1063	+	//         }
1064	+	//     }
1065	+
1066		public static class NPETask implements Callable<String> {
1067		public String call() { throw new NullPointerException(); }
1068		}
#	Line 797 | Line 1073 | public class JSR166TestCase extends Test
1073
1074		public class ShortRunnable extends CheckedRunnable {
1075		protected void realRun() throws Throwable {
1076	<	Thread.sleep(SHORT_DELAY_MS);
1076	>	delay(SHORT_DELAY_MS);
1077		}
1078		}
1079
1080		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1081		protected void realRun() throws InterruptedException {
1082	<	Thread.sleep(SHORT_DELAY_MS);
1082	>	delay(SHORT_DELAY_MS);
1083		}
1084		}
1085
1086		public class SmallRunnable extends CheckedRunnable {
1087		protected void realRun() throws Throwable {
1088	<	Thread.sleep(SMALL_DELAY_MS);
1088	>	delay(SMALL_DELAY_MS);
1089		}
1090		}
1091
1092		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1093		protected void realRun() {
1094		try {
1095	<	Thread.sleep(SMALL_DELAY_MS);
1095	>	delay(SMALL_DELAY_MS);
1096		} catch (InterruptedException ok) {}
1097		}
1098		}
1099
1100		public class SmallCallable extends CheckedCallable {
1101		protected Object realCall() throws InterruptedException {
1102	<	Thread.sleep(SMALL_DELAY_MS);
1102	>	delay(SMALL_DELAY_MS);
1103		return Boolean.TRUE;
1104		}
1105		}
1106
1107		public class MediumRunnable extends CheckedRunnable {
1108		protected void realRun() throws Throwable {
1109	<	Thread.sleep(MEDIUM_DELAY_MS);
1109	>	delay(MEDIUM_DELAY_MS);
1110		}
1111		}
1112
1113		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1114		protected void realRun() throws InterruptedException {
1115	<	Thread.sleep(MEDIUM_DELAY_MS);
1115	>	delay(MEDIUM_DELAY_MS);
1116		}
1117		}
1118
#	Line 844 | Line 1120 | public class JSR166TestCase extends Test
1120		return new CheckedRunnable() {
1121		protected void realRun() {
1122		try {
1123	<	Thread.sleep(timeoutMillis);
1123	>	delay(timeoutMillis);
1124		} catch (InterruptedException ok) {}
1125		}};
1126		}
#	Line 852 | Line 1128 | public class JSR166TestCase extends Test
1128		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1129		protected void realRun() {
1130		try {
1131	<	Thread.sleep(MEDIUM_DELAY_MS);
1131	>	delay(MEDIUM_DELAY_MS);
1132		} catch (InterruptedException ok) {}
1133		}
1134		}
#	Line 860 | Line 1136 | public class JSR166TestCase extends Test
1136		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1137		protected void realRun() {
1138		try {
1139	<	Thread.sleep(LONG_DELAY_MS);
1139	>	delay(LONG_DELAY_MS);
1140		} catch (InterruptedException ok) {}
1141		}
1142		}
#	Line 884 | Line 1160 | public class JSR166TestCase extends Test
1160		public boolean isDone() { return done; }
1161		public void run() {
1162		try {
1163	<	Thread.sleep(timeoutMillis);
1163	>	delay(timeoutMillis);
1164		done = true;
1165		} catch (InterruptedException ok) {}
1166		}
#	Line 895 | Line 1171 | public class JSR166TestCase extends Test
1171		public volatile boolean done = false;
1172		public void run() {
1173		try {
1174	<	Thread.sleep(SHORT_DELAY_MS);
1174	>	delay(SHORT_DELAY_MS);
1175		done = true;
1176		} catch (InterruptedException ok) {}
1177		}
#	Line 905 | Line 1181 | public class JSR166TestCase extends Test
1181		public volatile boolean done = false;
1182		public void run() {
1183		try {
1184	<	Thread.sleep(SMALL_DELAY_MS);
1184	>	delay(SMALL_DELAY_MS);
1185		done = true;
1186		} catch (InterruptedException ok) {}
1187		}
#	Line 915 | Line 1191 | public class JSR166TestCase extends Test
1191		public volatile boolean done = false;
1192		public void run() {
1193		try {
1194	<	Thread.sleep(MEDIUM_DELAY_MS);
1194	>	delay(MEDIUM_DELAY_MS);
1195		done = true;
1196		} catch (InterruptedException ok) {}
1197		}
#	Line 925 | Line 1201 | public class JSR166TestCase extends Test
1201		public volatile boolean done = false;
1202		public void run() {
1203		try {
1204	<	Thread.sleep(LONG_DELAY_MS);
1204	>	delay(LONG_DELAY_MS);
1205		done = true;
1206		} catch (InterruptedException ok) {}
1207		}
#	Line 942 | Line 1218 | public class JSR166TestCase extends Test
1218		public volatile boolean done = false;
1219		public Object call() {
1220		try {
1221	<	Thread.sleep(SMALL_DELAY_MS);
1221	>	delay(SMALL_DELAY_MS);
1222		done = true;
1223		} catch (InterruptedException ok) {}
1224		return Boolean.TRUE;
#	Line 989 | Line 1265 | public class JSR166TestCase extends Test
1265		}
1266
1267		/**
1268	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1269	<	* of throwing checked exceptions.
1268	>	* A CyclicBarrier that uses timed await and fails with
1269	>	* AssertionFailedErrors instead of throwing checked exceptions.
1270		*/
1271		public class CheckedBarrier extends CyclicBarrier {
1272		public CheckedBarrier(int parties) { super(parties); }
1273
1274		public int await() {
1275		try {
1276	<	return super.await();
1276	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1277	>	} catch (TimeoutException e) {
1278	>	throw new AssertionFailedError("timed out");
1279		} catch (Exception e) {
1280		AssertionFailedError afe =
1281		new AssertionFailedError("Unexpected exception: " + e);
#	Line 1007 | Line 1285 | public class JSR166TestCase extends Test
1285		}
1286		}
1287
1288	+	void checkEmpty(BlockingQueue q) {
1289	+	try {
1290	+	assertTrue(q.isEmpty());
1291	+	assertEquals(0, q.size());
1292	+	assertNull(q.peek());
1293	+	assertNull(q.poll());
1294	+	assertNull(q.poll(0, MILLISECONDS));
1295	+	assertEquals(q.toString(), "[]");
1296	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1297	+	assertFalse(q.iterator().hasNext());
1298	+	try {
1299	+	q.element();
1300	+	shouldThrow();
1301	+	} catch (NoSuchElementException success) {}
1302	+	try {
1303	+	q.iterator().next();
1304	+	shouldThrow();
1305	+	} catch (NoSuchElementException success) {}
1306	+	try {
1307	+	q.remove();
1308	+	shouldThrow();
1309	+	} catch (NoSuchElementException success) {}
1310	+	} catch (InterruptedException ie) {
1311	+	threadUnexpectedException(ie);
1312	+	}
1313	+	}
1314	+
1315	+	void assertSerialEquals(Object x, Object y) {
1316	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1317	+	}
1318	+
1319	+	void assertNotSerialEquals(Object x, Object y) {
1320	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1321	+	}
1322	+
1323	+	byte[] serialBytes(Object o) {
1324	+	try {
1325	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1326	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1327	+	oos.writeObject(o);
1328	+	oos.flush();
1329	+	oos.close();
1330	+	return bos.toByteArray();
1331	+	} catch (Throwable t) {
1332	+	threadUnexpectedException(t);
1333	+	return new byte[0];
1334	+	}
1335	+	}
1336	+
1337	+	@SuppressWarnings("unchecked")
1338	+	<T> T serialClone(T o) {
1339	+	try {
1340	+	ObjectInputStream ois = new ObjectInputStream
1341	+	(new ByteArrayInputStream(serialBytes(o)));
1342	+	T clone = (T) ois.readObject();
1343	+	assertSame(o.getClass(), clone.getClass());
1344	+	return clone;
1345	+	} catch (Throwable t) {
1346	+	threadUnexpectedException(t);
1347	+	return null;
1348	+	}
1349	+	}
1350		}

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