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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.64 by jsr166, Fri Oct 15 22:30:07 2010 UTC vs.
Revision 1.129 by jsr166, Fri Feb 27 22:10:29 2015 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.PropertyPermission;
11	–	import java.util.concurrent.*;
12	–	import java.util.concurrent.atomic.AtomicReference;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	+
12	+	import java.io.ByteArrayInputStream;
13	+	import java.io.ByteArrayOutputStream;
14	+	import java.io.ObjectInputStream;
15	+	import java.io.ObjectOutputStream;
16	+	import java.lang.management.ManagementFactory;
17	+	import java.lang.management.ThreadInfo;
18	+	import java.lang.reflect.Method;
19		import java.security.CodeSource;
20		import java.security.Permission;
21		import java.security.PermissionCollection;
#	Line 18 | Line 23 | import java.security.Permissions;
23		import java.security.Policy;
24		import java.security.ProtectionDomain;
25		import java.security.SecurityPermission;
26	+	import java.util.ArrayList;
27	+	import java.util.Arrays;
28	+	import java.util.Date;
29	+	import java.util.Enumeration;
30	+	import java.util.Iterator;
31	+	import java.util.List;
32	+	import java.util.NoSuchElementException;
33	+	import java.util.PropertyPermission;
34	+	import java.util.concurrent.BlockingQueue;
35	+	import java.util.concurrent.Callable;
36	+	import java.util.concurrent.CountDownLatch;
37	+	import java.util.concurrent.CyclicBarrier;
38	+	import java.util.concurrent.ExecutorService;
39	+	import java.util.concurrent.Future;
40	+	import java.util.concurrent.RecursiveAction;
41	+	import java.util.concurrent.RecursiveTask;
42	+	import java.util.concurrent.RejectedExecutionHandler;
43	+	import java.util.concurrent.Semaphore;
44	+	import java.util.concurrent.ThreadFactory;
45	+	import java.util.concurrent.ThreadPoolExecutor;
46	+	import java.util.concurrent.TimeoutException;
47	+	import java.util.concurrent.atomic.AtomicReference;
48	+	import java.util.regex.Pattern;
49	+
50	+	import junit.framework.AssertionFailedError;
51	+	import junit.framework.Test;
52	+	import junit.framework.TestCase;
53	+	import junit.framework.TestSuite;
54
55		/**
56		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 60 | Line 93 | import java.security.SecurityPermission;
93		*
94		* </ol>
95		*
96	<	* <p> <b>Other notes</b>
96	>	* <p><b>Other notes</b>
97		* <ul>
98		*
99		* <li> Usually, there is one testcase method per JSR166 method
#	Line 100 | Line 133 | public class JSR166TestCase extends Test
133		Boolean.getBoolean("jsr166.expensiveTests");
134
135		/**
136	+	* If true, also run tests that are not part of the official tck
137	+	* because they test unspecified implementation details.
138	+	*/
139	+	protected static final boolean testImplementationDetails =
140	+	Boolean.getBoolean("jsr166.testImplementationDetails");
141	+
142	+	/**
143		* If true, report on stdout all "slow" tests, that is, ones that
144		* take more than profileThreshold milliseconds to execute.
145		*/
#	Line 113 | Line 153 | public class JSR166TestCase extends Test
153		private static final long profileThreshold =
154		Long.getLong("jsr166.profileThreshold", 100);
155
156	+	/**
157	+	* The number of repetitions per test (for tickling rare bugs).
158	+	*/
159	+	private static final int runsPerTest =
160	+	Integer.getInteger("jsr166.runsPerTest", 1);
161	+
162	+	/**
163	+	* A filter for tests to run, matching strings of the form
164	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
165	+	* Usefully combined with jsr166.runsPerTest.
166	+	*/
167	+	private static final Pattern methodFilter = methodFilter();
168	+
169	+	private static Pattern methodFilter() {
170	+	String regex = System.getProperty("jsr166.methodFilter");
171	+	return (regex == null) ? null : Pattern.compile(regex);
172	+	}
173	+
174		protected void runTest() throws Throwable {
175	<	if (profileTests)
176	<	runTestProfiled();
177	<	else
178	<	super.runTest();
175	>	if (methodFilter == null
176	>	|| methodFilter.matcher(toString()).find()) {
177	>	for (int i = 0; i < runsPerTest; i++) {
178	>	if (profileTests)
179	>	runTestProfiled();
180	>	else
181	>	super.runTest();
182	>	}
183	>	}
184		}
185
186		protected void runTestProfiled() throws Throwable {
187	+	// Warmup run, notably to trigger all needed classloading.
188	+	super.runTest();
189		long t0 = System.nanoTime();
190		try {
191		super.runTest();
192		} finally {
193	<	long elapsedMillis =
129	<	(System.nanoTime() - t0) / (1000L * 1000L);
193	>	long elapsedMillis = millisElapsedSince(t0);
194		if (elapsedMillis >= profileThreshold)
195		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
196		}
197		}
198
199		/**
200	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
200	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
201	>	* Optional command line arg provides the number of iterations to
202	>	* repeat running the tests.
203		*/
204		public static void main(String[] args) {
205		if (useSecurityManager) {
#	Line 165 | Line 231 | public class JSR166TestCase extends Test
231		return suite;
232		}
233
234	+	public static void addNamedTestClasses(TestSuite suite,
235	+	String... testClassNames) {
236	+	for (String testClassName : testClassNames) {
237	+	try {
238	+	Class<?> testClass = Class.forName(testClassName);
239	+	Method m = testClass.getDeclaredMethod("suite",
240	+	new Class<?>[0]);
241	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
242	+	} catch (Exception e) {
243	+	throw new Error("Missing test class", e);
244	+	}
245	+	}
246	+	}
247	+
248	+	public static final double JAVA_CLASS_VERSION;
249	+	public static final String JAVA_SPECIFICATION_VERSION;
250	+	static {
251	+	try {
252	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
253	+	new java.security.PrivilegedAction<Double>() {
254	+	public Double run() {
255	+	return Double.valueOf(System.getProperty("java.class.version"));}});
256	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
257	+	new java.security.PrivilegedAction<String>() {
258	+	public String run() {
259	+	return System.getProperty("java.specification.version");}});
260	+	} catch (Throwable t) {
261	+	throw new Error(t);
262	+	}
263	+	}
264	+
265	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
266	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
267	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
268	+	public static boolean atLeastJava9() {
269	+	// As of 2014-05, java9 still uses 52.0 class file version
270	+	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
271	+	}
272	+
273		/**
274		* Collects all JSR166 unit tests as one suite.
275		*/
276		public static Test suite() {
277	<	return newTestSuite(
277	>	// Java7+ test classes
278	>	TestSuite suite = newTestSuite(
279		ForkJoinPoolTest.suite(),
280		ForkJoinTaskTest.suite(),
281		RecursiveActionTest.suite(),
#	Line 234 | Line 340 | public class JSR166TestCase extends Test
340		TreeSetTest.suite(),
341		TreeSubMapTest.suite(),
342		TreeSubSetTest.suite());
343	+
344	+	// Java8+ test classes
345	+	if (atLeastJava8()) {
346	+	String[] java8TestClassNames = {
347	+	"Atomic8Test",
348	+	"CompletableFutureTest",
349	+	"ConcurrentHashMap8Test",
350	+	"CountedCompleterTest",
351	+	"DoubleAccumulatorTest",
352	+	"DoubleAdderTest",
353	+	"ForkJoinPool8Test",
354	+	"ForkJoinTask8Test",
355	+	"LongAccumulatorTest",
356	+	"LongAdderTest",
357	+	"SplittableRandomTest",
358	+	"StampedLockTest",
359	+	"ThreadLocalRandom8Test",
360	+	};
361	+	addNamedTestClasses(suite, java8TestClassNames);
362	+	}
363	+
364	+	// Java9+ test classes
365	+	if (atLeastJava9()) {
366	+	String[] java9TestClassNames = {
367	+	"ThreadPoolExecutor9Test",
368	+	};
369	+	addNamedTestClasses(suite, java9TestClassNames);
370	+	}
371	+
372	+	return suite;
373		}
374
375	+	// Delays for timing-dependent tests, in milliseconds.
376
377		public static long SHORT_DELAY_MS;
378		public static long SMALL_DELAY_MS;
379		public static long MEDIUM_DELAY_MS;
380		public static long LONG_DELAY_MS;
381
245	–
382		/**
383		* Returns the shortest timed delay. This could
384		* be reimplemented to use for example a Property.
#	Line 251 | Line 387 | public class JSR166TestCase extends Test
387		return 50;
388		}
389
254	–
390		/**
391		* Sets delays as multiples of SHORT_DELAY.
392		*/
#	Line 259 | Line 394 | public class JSR166TestCase extends Test
394		SHORT_DELAY_MS = getShortDelay();
395		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
396		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
397	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
397	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
398	>	}
399	>
400	>	/**
401	>	* Returns a timeout in milliseconds to be used in tests that
402	>	* verify that operations block or time out.
403	>	*/
404	>	long timeoutMillis() {
405	>	return SHORT_DELAY_MS / 4;
406	>	}
407	>
408	>	/**
409	>	* Returns a new Date instance representing a time delayMillis
410	>	* milliseconds in the future.
411	>	*/
412	>	Date delayedDate(long delayMillis) {
413	>	return new Date(System.currentTimeMillis() + delayMillis);
414		}
415
416		/**
#	Line 283 | Line 434 | public class JSR166TestCase extends Test
434		}
435
436		/**
437	+	* Extra checks that get done for all test cases.
438	+	*
439		* Triggers test case failure if any thread assertions have failed,
440		* by rethrowing, in the test harness thread, any exception recorded
441		* earlier by threadRecordFailure.
442	+	*
443	+	* Triggers test case failure if interrupt status is set in the main thread.
444		*/
445		public void tearDown() throws Exception {
446	<	Throwable t = threadFailure.get();
446	>	Throwable t = threadFailure.getAndSet(null);
447		if (t != null) {
448		if (t instanceof Error)
449		throw (Error) t;
#	Line 303 | Line 458 | public class JSR166TestCase extends Test
458		throw afe;
459		}
460		}
461	+
462	+	if (Thread.interrupted())
463	+	throw new AssertionFailedError("interrupt status set in main thread");
464	+
465	+	checkForkJoinPoolThreadLeaks();
466	+	}
467	+
468	+	/**
469	+	* Finds missing try { ... } finally { joinPool(e); }
470	+	*/
471	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
472	+	Thread[] survivors = new Thread[5];
473	+	int count = Thread.enumerate(survivors);
474	+	for (int i = 0; i < count; i++) {
475	+	Thread thread = survivors[i];
476	+	String name = thread.getName();
477	+	if (name.startsWith("ForkJoinPool-")) {
478	+	// give thread some time to terminate
479	+	thread.join(LONG_DELAY_MS);
480	+	if (!thread.isAlive()) continue;
481	+	thread.stop();
482	+	throw new AssertionFailedError
483	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
484	+	toString(), name));
485	+	}
486	+	}
487		}
488
489		/**
#	Line 383 | Line 564 | public class JSR166TestCase extends Test
564		public void threadAssertEquals(Object x, Object y) {
565		try {
566		assertEquals(x, y);
567	<	} catch (AssertionFailedError t) {
568	<	threadRecordFailure(t);
569	<	throw t;
570	<	} catch (Throwable t) {
571	<	threadUnexpectedException(t);
567	>	} catch (AssertionFailedError fail) {
568	>	threadRecordFailure(fail);
569	>	throw fail;
570	>	} catch (Throwable fail) {
571	>	threadUnexpectedException(fail);
572		}
573		}
574
#	Line 399 | Line 580 | public class JSR166TestCase extends Test
580		public void threadAssertSame(Object x, Object y) {
581		try {
582		assertSame(x, y);
583	<	} catch (AssertionFailedError t) {
584	<	threadRecordFailure(t);
585	<	throw t;
583	>	} catch (AssertionFailedError fail) {
584	>	threadRecordFailure(fail);
585	>	throw fail;
586		}
587		}
588
#	Line 434 | Line 615 | public class JSR166TestCase extends Test
615		else {
616		AssertionFailedError afe =
617		new AssertionFailedError("unexpected exception: " + t);
618	<	t.initCause(t);
618	>	afe.initCause(t);
619		throw afe;
620		}
621		}
622
623		/**
624	+	* Delays, via Thread.sleep, for the given millisecond delay, but
625	+	* if the sleep is shorter than specified, may re-sleep or yield
626	+	* until time elapses.
627	+	*/
628	+	static void delay(long millis) throws InterruptedException {
629	+	long startTime = System.nanoTime();
630	+	long ns = millis * 1000 * 1000;
631	+	for (;;) {
632	+	if (millis > 0L)
633	+	Thread.sleep(millis);
634	+	else // too short to sleep
635	+	Thread.yield();
636	+	long d = ns - (System.nanoTime() - startTime);
637	+	if (d > 0L)
638	+	millis = d / (1000 * 1000);
639	+	else
640	+	break;
641	+	}
642	+	}
643	+
644	+	/**
645		* Waits out termination of a thread pool or fails doing so.
646		*/
647	<	public void joinPool(ExecutorService exec) {
647	>	void joinPool(ExecutorService exec) {
648		try {
649		exec.shutdown();
650	<	assertTrue("ExecutorService did not terminate in a timely manner",
651	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
650	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
651	>	fail("ExecutorService " + exec +
652	>	" did not terminate in a timely manner");
653		} catch (SecurityException ok) {
654		// Allowed in case test doesn't have privs
655	<	} catch (InterruptedException ie) {
655	>	} catch (InterruptedException fail) {
656	>	fail("Unexpected InterruptedException");
657	>	}
658	>	}
659	>
660	>	/**
661	>	* A debugging tool to print all stack traces, as jstack does.
662	>	*/
663	>	static void printAllStackTraces() {
664	>	for (ThreadInfo info :
665	>	ManagementFactory.getThreadMXBean()
666	>	.dumpAllThreads(true, true))
667	>	System.err.print(info);
668	>	}
669	>
670	>	/**
671	>	* Checks that thread does not terminate within the default
672	>	* millisecond delay of {@code timeoutMillis()}.
673	>	*/
674	>	void assertThreadStaysAlive(Thread thread) {
675	>	assertThreadStaysAlive(thread, timeoutMillis());
676	>	}
677	>
678	>	/**
679	>	* Checks that thread does not terminate within the given millisecond delay.
680	>	*/
681	>	void assertThreadStaysAlive(Thread thread, long millis) {
682	>	try {
683	>	// No need to optimize the failing case via Thread.join.
684	>	delay(millis);
685	>	assertTrue(thread.isAlive());
686	>	} catch (InterruptedException fail) {
687	>	fail("Unexpected InterruptedException");
688	>	}
689	>	}
690	>
691	>	/**
692	>	* Checks that the threads do not terminate within the default
693	>	* millisecond delay of {@code timeoutMillis()}.
694	>	*/
695	>	void assertThreadsStayAlive(Thread... threads) {
696	>	assertThreadsStayAlive(timeoutMillis(), threads);
697	>	}
698	>
699	>	/**
700	>	* Checks that the threads do not terminate within the given millisecond delay.
701	>	*/
702	>	void assertThreadsStayAlive(long millis, Thread... threads) {
703	>	try {
704	>	// No need to optimize the failing case via Thread.join.
705	>	delay(millis);
706	>	for (Thread thread : threads)
707	>	assertTrue(thread.isAlive());
708	>	} catch (InterruptedException fail) {
709		fail("Unexpected InterruptedException");
710		}
711		}
712
713	+	/**
714	+	* Checks that future.get times out, with the default timeout of
715	+	* {@code timeoutMillis()}.
716	+	*/
717	+	void assertFutureTimesOut(Future future) {
718	+	assertFutureTimesOut(future, timeoutMillis());
719	+	}
720	+
721	+	/**
722	+	* Checks that future.get times out, with the given millisecond timeout.
723	+	*/
724	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
725	+	long startTime = System.nanoTime();
726	+	try {
727	+	future.get(timeoutMillis, MILLISECONDS);
728	+	shouldThrow();
729	+	} catch (TimeoutException success) {
730	+	} catch (Exception fail) {
731	+	threadUnexpectedException(fail);
732	+	} finally { future.cancel(true); }
733	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
734	+	}
735
736		/**
737		* Fails with message "should throw exception".
#	Line 494 | Line 772 | public class JSR166TestCase extends Test
772		public static final Integer m6  = new Integer(-6);
773		public static final Integer m10 = new Integer(-10);
774
497	–
775		/**
776		* Runs Runnable r with a security policy that permits precisely
777		* the specified permissions.  If there is no current security
#	Line 506 | Line 783 | public class JSR166TestCase extends Test
783		SecurityManager sm = System.getSecurityManager();
784		if (sm == null) {
785		r.run();
786	+	}
787	+	runWithSecurityManagerWithPermissions(r, permissions);
788	+	}
789	+
790	+	/**
791	+	* Runs Runnable r with a security policy that permits precisely
792	+	* the specified permissions.  If there is no current security
793	+	* manager, a temporary one is set for the duration of the
794	+	* Runnable.  We require that any security manager permit
795	+	* getPolicy/setPolicy.
796	+	*/
797	+	public void runWithSecurityManagerWithPermissions(Runnable r,
798	+	Permission... permissions) {
799	+	SecurityManager sm = System.getSecurityManager();
800	+	if (sm == null) {
801		Policy savedPolicy = Policy.getPolicy();
802		try {
803		Policy.setPolicy(permissivePolicy());
804		System.setSecurityManager(new SecurityManager());
805	<	runWithPermissions(r, permissions);
805	>	runWithSecurityManagerWithPermissions(r, permissions);
806		} finally {
807		System.setSecurityManager(null);
808		Policy.setPolicy(savedPolicy);
#	Line 558 | Line 850 | public class JSR166TestCase extends Test
850		return perms.implies(p);
851		}
852		public void refresh() {}
853	+	public String toString() {
854	+	List<Permission> ps = new ArrayList<Permission>();
855	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
856	+	ps.add(e.nextElement());
857	+	return "AdjustablePolicy with permissions " + ps;
858	+	}
859		}
860
861		/**
#	Line 585 | Line 883 | public class JSR166TestCase extends Test
883		*/
884		void sleep(long millis) {
885		try {
886	<	Thread.sleep(millis);
887	<	} catch (InterruptedException ie) {
886	>	delay(millis);
887	>	} catch (InterruptedException fail) {
888		AssertionFailedError afe =
889		new AssertionFailedError("Unexpected InterruptedException");
890	<	afe.initCause(ie);
890	>	afe.initCause(fail);
891		throw afe;
892		}
893		}
894
895		/**
896	<	* Sleeps until the timeout has elapsed, or interrupted.
897	<	* Does <em>NOT</em> throw InterruptedException.
896	>	* Spin-waits up to the specified number of milliseconds for the given
897	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
898		*/
899	<	void sleepTillInterrupted(long timeoutMillis) {
899	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
900	>	long startTime = System.nanoTime();
901	>	for (;;) {
902	>	Thread.State s = thread.getState();
903	>	if (s == Thread.State.BLOCKED ||
904	>	s == Thread.State.WAITING ||
905	>	s == Thread.State.TIMED_WAITING)
906	>	return;
907	>	else if (s == Thread.State.TERMINATED)
908	>	fail("Unexpected thread termination");
909	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
910	>	threadAssertTrue(thread.isAlive());
911	>	return;
912	>	}
913	>	Thread.yield();
914	>	}
915	>	}
916	>
917	>	/**
918	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
919	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
920	>	*/
921	>	void waitForThreadToEnterWaitState(Thread thread) {
922	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
923	>	}
924	>
925	>	/**
926	>	* Returns the number of milliseconds since time given by
927	>	* startNanoTime, which must have been previously returned from a
928	>	* call to {@link System#nanoTime()}.
929	>	*/
930	>	static long millisElapsedSince(long startNanoTime) {
931	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
932	>	}
933	>
934	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
935	>	//         long startTime = System.nanoTime();
936	>	//         try {
937	>	//             r.run();
938	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
939	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
940	>	//             throw new AssertionFailedError("did not return promptly");
941	>	//     }
942	>
943	>	//     void assertTerminatesPromptly(Runnable r) {
944	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
945	>	//     }
946	>
947	>	/**
948	>	* Checks that timed f.get() returns the expected value, and does not
949	>	* wait for the timeout to elapse before returning.
950	>	*/
951	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
952	>	long startTime = System.nanoTime();
953		try {
954	<	Thread.sleep(timeoutMillis);
955	<	} catch (InterruptedException wakeup) {}
954	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
955	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
956	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
957	>	throw new AssertionFailedError("timed get did not return promptly");
958	>	}
959	>
960	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
961	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
962		}
963
964		/**
#	Line 622 | Line 979 | public class JSR166TestCase extends Test
979		void awaitTermination(Thread t, long timeoutMillis) {
980		try {
981		t.join(timeoutMillis);
982	<	} catch (InterruptedException ie) {
983	<	threadUnexpectedException(ie);
982	>	} catch (InterruptedException fail) {
983	>	threadUnexpectedException(fail);
984		} finally {
985	<	if (t.isAlive()) {
985	>	if (t.getState() != Thread.State.TERMINATED) {
986		t.interrupt();
987		fail("Test timed out");
988		}
989		}
990		}
991
992	+	/**
993	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
994	+	* terminate (using {@link Thread#join(long)}), else interrupts
995	+	* the thread (in the hope that it may terminate later) and fails.
996	+	*/
997	+	void awaitTermination(Thread t) {
998	+	awaitTermination(t, LONG_DELAY_MS);
999	+	}
1000	+
1001		// Some convenient Runnable classes
1002
1003		public abstract class CheckedRunnable implements Runnable {
#	Line 640 | Line 1006 | public class JSR166TestCase extends Test
1006		public final void run() {
1007		try {
1008		realRun();
1009	<	} catch (Throwable t) {
1010	<	threadUnexpectedException(t);
1009	>	} catch (Throwable fail) {
1010	>	threadUnexpectedException(fail);
1011		}
1012		}
1013		}
#	Line 694 | Line 1060 | public class JSR166TestCase extends Test
1060		realRun();
1061		threadShouldThrow("InterruptedException");
1062		} catch (InterruptedException success) {
1063	<	} catch (Throwable t) {
1064	<	threadUnexpectedException(t);
1063	>	threadAssertFalse(Thread.interrupted());
1064	>	} catch (Throwable fail) {
1065	>	threadUnexpectedException(fail);
1066		}
1067		}
1068		}
#	Line 706 | Line 1073 | public class JSR166TestCase extends Test
1073		public final T call() {
1074		try {
1075		return realCall();
1076	<	} catch (Throwable t) {
1077	<	threadUnexpectedException(t);
1076	>	} catch (Throwable fail) {
1077	>	threadUnexpectedException(fail);
1078		return null;
1079		}
1080		}
#	Line 723 | Line 1090 | public class JSR166TestCase extends Test
1090		threadShouldThrow("InterruptedException");
1091		return result;
1092		} catch (InterruptedException success) {
1093	<	} catch (Throwable t) {
1094	<	threadUnexpectedException(t);
1093	>	threadAssertFalse(Thread.interrupted());
1094	>	} catch (Throwable fail) {
1095	>	threadUnexpectedException(fail);
1096		}
1097		return null;
1098		}
#	Line 754 | Line 1122 | public class JSR166TestCase extends Test
1122		}};
1123		}
1124
1125	+	public Runnable awaiter(final CountDownLatch latch) {
1126	+	return new CheckedRunnable() {
1127	+	public void realRun() throws InterruptedException {
1128	+	await(latch);
1129	+	}};
1130	+	}
1131	+
1132	+	public void await(CountDownLatch latch) {
1133	+	try {
1134	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1135	+	} catch (Throwable fail) {
1136	+	threadUnexpectedException(fail);
1137	+	}
1138	+	}
1139	+
1140	+	public void await(Semaphore semaphore) {
1141	+	try {
1142	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1143	+	} catch (Throwable fail) {
1144	+	threadUnexpectedException(fail);
1145	+	}
1146	+	}
1147	+
1148	+	//     /**
1149	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1150	+	//      */
1151	+	//     public void await(AtomicBoolean flag) {
1152	+	//         await(flag, LONG_DELAY_MS);
1153	+	//     }
1154	+
1155	+	//     /**
1156	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1157	+	//      */
1158	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1159	+	//         long startTime = System.nanoTime();
1160	+	//         while (!flag.get()) {
1161	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1162	+	//                 throw new AssertionFailedError("timed out");
1163	+	//             Thread.yield();
1164	+	//         }
1165	+	//     }
1166	+
1167		public static class NPETask implements Callable<String> {
1168		public String call() { throw new NullPointerException(); }
1169		}
#	Line 764 | Line 1174 | public class JSR166TestCase extends Test
1174
1175		public class ShortRunnable extends CheckedRunnable {
1176		protected void realRun() throws Throwable {
1177	<	Thread.sleep(SHORT_DELAY_MS);
1177	>	delay(SHORT_DELAY_MS);
1178		}
1179		}
1180
1181		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1182		protected void realRun() throws InterruptedException {
1183	<	Thread.sleep(SHORT_DELAY_MS);
1183	>	delay(SHORT_DELAY_MS);
1184		}
1185		}
1186
1187		public class SmallRunnable extends CheckedRunnable {
1188		protected void realRun() throws Throwable {
1189	<	Thread.sleep(SMALL_DELAY_MS);
1189	>	delay(SMALL_DELAY_MS);
1190		}
1191		}
1192
1193		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1194		protected void realRun() {
1195		try {
1196	<	Thread.sleep(SMALL_DELAY_MS);
1196	>	delay(SMALL_DELAY_MS);
1197		} catch (InterruptedException ok) {}
1198		}
1199		}
1200
1201		public class SmallCallable extends CheckedCallable {
1202		protected Object realCall() throws InterruptedException {
1203	<	Thread.sleep(SMALL_DELAY_MS);
1203	>	delay(SMALL_DELAY_MS);
1204		return Boolean.TRUE;
1205		}
1206		}
1207
1208		public class MediumRunnable extends CheckedRunnable {
1209		protected void realRun() throws Throwable {
1210	<	Thread.sleep(MEDIUM_DELAY_MS);
1210	>	delay(MEDIUM_DELAY_MS);
1211		}
1212		}
1213
1214		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1215		protected void realRun() throws InterruptedException {
1216	<	Thread.sleep(MEDIUM_DELAY_MS);
1216	>	delay(MEDIUM_DELAY_MS);
1217		}
1218		}
1219
#	Line 811 | Line 1221 | public class JSR166TestCase extends Test
1221		return new CheckedRunnable() {
1222		protected void realRun() {
1223		try {
1224	<	Thread.sleep(timeoutMillis);
1224	>	delay(timeoutMillis);
1225		} catch (InterruptedException ok) {}
1226		}};
1227		}
#	Line 819 | Line 1229 | public class JSR166TestCase extends Test
1229		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1230		protected void realRun() {
1231		try {
1232	<	Thread.sleep(MEDIUM_DELAY_MS);
1232	>	delay(MEDIUM_DELAY_MS);
1233		} catch (InterruptedException ok) {}
1234		}
1235		}
#	Line 827 | Line 1237 | public class JSR166TestCase extends Test
1237		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1238		protected void realRun() {
1239		try {
1240	<	Thread.sleep(LONG_DELAY_MS);
1240	>	delay(LONG_DELAY_MS);
1241		} catch (InterruptedException ok) {}
1242		}
1243		}
#	Line 851 | Line 1261 | public class JSR166TestCase extends Test
1261		public boolean isDone() { return done; }
1262		public void run() {
1263		try {
1264	<	Thread.sleep(timeoutMillis);
1264	>	delay(timeoutMillis);
1265		done = true;
1266		} catch (InterruptedException ok) {}
1267		}
#	Line 862 | Line 1272 | public class JSR166TestCase extends Test
1272		public volatile boolean done = false;
1273		public void run() {
1274		try {
1275	<	Thread.sleep(SHORT_DELAY_MS);
1275	>	delay(SHORT_DELAY_MS);
1276		done = true;
1277		} catch (InterruptedException ok) {}
1278		}
#	Line 872 | Line 1282 | public class JSR166TestCase extends Test
1282		public volatile boolean done = false;
1283		public void run() {
1284		try {
1285	<	Thread.sleep(SMALL_DELAY_MS);
1285	>	delay(SMALL_DELAY_MS);
1286		done = true;
1287		} catch (InterruptedException ok) {}
1288		}
#	Line 882 | Line 1292 | public class JSR166TestCase extends Test
1292		public volatile boolean done = false;
1293		public void run() {
1294		try {
1295	<	Thread.sleep(MEDIUM_DELAY_MS);
1295	>	delay(MEDIUM_DELAY_MS);
1296		done = true;
1297		} catch (InterruptedException ok) {}
1298		}
#	Line 892 | Line 1302 | public class JSR166TestCase extends Test
1302		public volatile boolean done = false;
1303		public void run() {
1304		try {
1305	<	Thread.sleep(LONG_DELAY_MS);
1305	>	delay(LONG_DELAY_MS);
1306		done = true;
1307		} catch (InterruptedException ok) {}
1308		}
#	Line 909 | Line 1319 | public class JSR166TestCase extends Test
1319		public volatile boolean done = false;
1320		public Object call() {
1321		try {
1322	<	Thread.sleep(SMALL_DELAY_MS);
1322	>	delay(SMALL_DELAY_MS);
1323		done = true;
1324		} catch (InterruptedException ok) {}
1325		return Boolean.TRUE;
#	Line 922 | Line 1332 | public class JSR166TestCase extends Test
1332		public abstract class CheckedRecursiveAction extends RecursiveAction {
1333		protected abstract void realCompute() throws Throwable;
1334
1335	<	public final void compute() {
1335	>	@Override protected final void compute() {
1336		try {
1337		realCompute();
1338	<	} catch (Throwable t) {
1339	<	threadUnexpectedException(t);
1338	>	} catch (Throwable fail) {
1339	>	threadUnexpectedException(fail);
1340		}
1341		}
1342		}
#	Line 937 | Line 1347 | public class JSR166TestCase extends Test
1347		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1348		protected abstract T realCompute() throws Throwable;
1349
1350	<	public final T compute() {
1350	>	@Override protected final T compute() {
1351		try {
1352		return realCompute();
1353	<	} catch (Throwable t) {
1354	<	threadUnexpectedException(t);
1353	>	} catch (Throwable fail) {
1354	>	threadUnexpectedException(fail);
1355		return null;
1356		}
1357		}
#	Line 956 | Line 1366 | public class JSR166TestCase extends Test
1366		}
1367
1368		/**
1369	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1370	<	* of throwing checked exceptions.
1369	>	* A CyclicBarrier that uses timed await and fails with
1370	>	* AssertionFailedErrors instead of throwing checked exceptions.
1371		*/
1372		public class CheckedBarrier extends CyclicBarrier {
1373		public CheckedBarrier(int parties) { super(parties); }
1374
1375		public int await() {
1376		try {
1377	<	return super.await();
1378	<	} catch (Exception e) {
1377	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1378	>	} catch (TimeoutException timedOut) {
1379	>	throw new AssertionFailedError("timed out");
1380	>	} catch (Exception fail) {
1381		AssertionFailedError afe =
1382	<	new AssertionFailedError("Unexpected exception: " + e);
1383	<	afe.initCause(e);
1382	>	new AssertionFailedError("Unexpected exception: " + fail);
1383	>	afe.initCause(fail);
1384		throw afe;
1385		}
1386		}
1387		}
1388
1389	+	void checkEmpty(BlockingQueue q) {
1390	+	try {
1391	+	assertTrue(q.isEmpty());
1392	+	assertEquals(0, q.size());
1393	+	assertNull(q.peek());
1394	+	assertNull(q.poll());
1395	+	assertNull(q.poll(0, MILLISECONDS));
1396	+	assertEquals(q.toString(), "[]");
1397	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1398	+	assertFalse(q.iterator().hasNext());
1399	+	try {
1400	+	q.element();
1401	+	shouldThrow();
1402	+	} catch (NoSuchElementException success) {}
1403	+	try {
1404	+	q.iterator().next();
1405	+	shouldThrow();
1406	+	} catch (NoSuchElementException success) {}
1407	+	try {
1408	+	q.remove();
1409	+	shouldThrow();
1410	+	} catch (NoSuchElementException success) {}
1411	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1412	+	}
1413	+
1414	+	void assertSerialEquals(Object x, Object y) {
1415	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1416	+	}
1417	+
1418	+	void assertNotSerialEquals(Object x, Object y) {
1419	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1420	+	}
1421	+
1422	+	byte[] serialBytes(Object o) {
1423	+	try {
1424	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1425	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1426	+	oos.writeObject(o);
1427	+	oos.flush();
1428	+	oos.close();
1429	+	return bos.toByteArray();
1430	+	} catch (Throwable fail) {
1431	+	threadUnexpectedException(fail);
1432	+	return new byte[0];
1433	+	}
1434	+	}
1435	+
1436	+	@SuppressWarnings("unchecked")
1437	+	<T> T serialClone(T o) {
1438	+	try {
1439	+	ObjectInputStream ois = new ObjectInputStream
1440	+	(new ByteArrayInputStream(serialBytes(o)));
1441	+	T clone = (T) ois.readObject();
1442	+	assertSame(o.getClass(), clone.getClass());
1443	+	return clone;
1444	+	} catch (Throwable fail) {
1445	+	threadUnexpectedException(fail);
1446	+	return null;
1447	+	}
1448	+	}
1449	+
1450	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1451	+	Runnable... throwingActions) {
1452	+	for (Runnable throwingAction : throwingActions) {
1453	+	boolean threw = false;
1454	+	try { throwingAction.run(); }
1455	+	catch (Throwable t) {
1456	+	threw = true;
1457	+	if (!expectedExceptionClass.isInstance(t)) {
1458	+	AssertionFailedError afe =
1459	+	new AssertionFailedError
1460	+	("Expected " + expectedExceptionClass.getName() +
1461	+	", got " + t.getClass().getName());
1462	+	afe.initCause(t);
1463	+	threadUnexpectedException(afe);
1464	+	}
1465	+	}
1466	+	if (!threw)
1467	+	shouldThrow(expectedExceptionClass.getName());
1468	+	}
1469	+	}
1470	+
1471	+	public void assertIteratorExhausted(Iterator<?> it) {
1472	+	try {
1473	+	it.next();
1474	+	shouldThrow();
1475	+	} catch (NoSuchElementException success) {}
1476	+	assertFalse(it.hasNext());
1477	+	}
1478		}

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