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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.55 by jsr166, Mon Sep 20 20:42:37 2010 UTC vs.
Revision 1.126 by jsr166, Sat Jan 17 22:55:06 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 96 | Line 129 | public class JSR166TestCase extends Test
129		private static final boolean useSecurityManager =
130		Boolean.getBoolean("jsr166.useSecurityManager");
131
132	+	protected static final boolean expensiveTests =
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	+	*/
146	+	private static final boolean profileTests =
147	+	Boolean.getBoolean("jsr166.profileTests");
148	+
149	+	/**
150	+	* The number of milliseconds that tests are permitted for
151	+	* execution without being reported, when profileTests is set.
152	+	*/
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 (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 = 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 105 | Line 207 | public class JSR166TestCase extends Test
207		Policy.setPolicy(permissivePolicy());
208		System.setSecurityManager(new SecurityManager());
209		}
210	<	int iters = 1;
211	<	if (args.length > 0)
110	<	iters = Integer.parseInt(args[0]);
210	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
211	>
212		Test s = suite();
213		for (int i = 0; i < iters; ++i) {
214		junit.textui.TestRunner.run(s);
#	Line 117 | Line 218 | public class JSR166TestCase extends Test
218		System.exit(0);
219		}
220
221	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
222	+	TestSuite suite = new TestSuite();
223	+	for (Object suiteOrClass : suiteOrClasses) {
224	+	if (suiteOrClass instanceof TestSuite)
225	+	suite.addTest((TestSuite) suiteOrClass);
226	+	else if (suiteOrClass instanceof Class)
227	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
228	+	else
229	+	throw new ClassCastException("not a test suite or class");
230	+	}
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
274	>	* Collects all JSR166 unit tests as one suite.
275		*/
276		public static Test suite() {
277	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
278	<
279	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
280	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
281	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
282	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
283	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
284	<	suite.addTest(new TestSuite(PhaserTest.class));
285	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
286	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
287	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
288	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
289	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
290	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
291	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
292	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
293	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
294	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
295	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
296	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
297	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
298	<	suite.addTest(new TestSuite(AtomicLongTest.class));
299	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
300	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
301	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
302	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
303	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
304	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
305	<	suite.addTest(new TestSuite(ConcurrentLinkedDequeTest.class));
306	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
307	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
308	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
309	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
310	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
311	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
312	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
313	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
314	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
315	<	suite.addTest(new TestSuite(DelayQueueTest.class));
316	<	suite.addTest(new TestSuite(EntryTest.class));
317	<	suite.addTest(new TestSuite(ExchangerTest.class));
318	<	suite.addTest(new TestSuite(ExecutorsTest.class));
319	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
320	<	suite.addTest(new TestSuite(FutureTaskTest.class));
321	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
322	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
323	<	suite.addTest(new TestSuite(LinkedListTest.class));
324	<	suite.addTest(new TestSuite(LockSupportTest.class));
325	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
326	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
327	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
328	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
329	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
330	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
331	<	suite.addTest(new TestSuite(SemaphoreTest.class));
332	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
333	<	suite.addTest(new TestSuite(SystemTest.class));
334	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
335	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
336	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
337	<	suite.addTest(new TestSuite(ThreadTest.class));
338	<	suite.addTest(new TestSuite(TimeUnitTest.class));
339	<	suite.addTest(new TestSuite(TreeMapTest.class));
340	<	suite.addTest(new TestSuite(TreeSetTest.class));
341	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
342	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
277	>	// Java7+ test classes
278	>	TestSuite suite = newTestSuite(
279	>	ForkJoinPoolTest.suite(),
280	>	ForkJoinTaskTest.suite(),
281	>	RecursiveActionTest.suite(),
282	>	RecursiveTaskTest.suite(),
283	>	LinkedTransferQueueTest.suite(),
284	>	PhaserTest.suite(),
285	>	ThreadLocalRandomTest.suite(),
286	>	AbstractExecutorServiceTest.suite(),
287	>	AbstractQueueTest.suite(),
288	>	AbstractQueuedSynchronizerTest.suite(),
289	>	AbstractQueuedLongSynchronizerTest.suite(),
290	>	ArrayBlockingQueueTest.suite(),
291	>	ArrayDequeTest.suite(),
292	>	AtomicBooleanTest.suite(),
293	>	AtomicIntegerArrayTest.suite(),
294	>	AtomicIntegerFieldUpdaterTest.suite(),
295	>	AtomicIntegerTest.suite(),
296	>	AtomicLongArrayTest.suite(),
297	>	AtomicLongFieldUpdaterTest.suite(),
298	>	AtomicLongTest.suite(),
299	>	AtomicMarkableReferenceTest.suite(),
300	>	AtomicReferenceArrayTest.suite(),
301	>	AtomicReferenceFieldUpdaterTest.suite(),
302	>	AtomicReferenceTest.suite(),
303	>	AtomicStampedReferenceTest.suite(),
304	>	ConcurrentHashMapTest.suite(),
305	>	ConcurrentLinkedDequeTest.suite(),
306	>	ConcurrentLinkedQueueTest.suite(),
307	>	ConcurrentSkipListMapTest.suite(),
308	>	ConcurrentSkipListSubMapTest.suite(),
309	>	ConcurrentSkipListSetTest.suite(),
310	>	ConcurrentSkipListSubSetTest.suite(),
311	>	CopyOnWriteArrayListTest.suite(),
312	>	CopyOnWriteArraySetTest.suite(),
313	>	CountDownLatchTest.suite(),
314	>	CyclicBarrierTest.suite(),
315	>	DelayQueueTest.suite(),
316	>	EntryTest.suite(),
317	>	ExchangerTest.suite(),
318	>	ExecutorsTest.suite(),
319	>	ExecutorCompletionServiceTest.suite(),
320	>	FutureTaskTest.suite(),
321	>	LinkedBlockingDequeTest.suite(),
322	>	LinkedBlockingQueueTest.suite(),
323	>	LinkedListTest.suite(),
324	>	LockSupportTest.suite(),
325	>	PriorityBlockingQueueTest.suite(),
326	>	PriorityQueueTest.suite(),
327	>	ReentrantLockTest.suite(),
328	>	ReentrantReadWriteLockTest.suite(),
329	>	ScheduledExecutorTest.suite(),
330	>	ScheduledExecutorSubclassTest.suite(),
331	>	SemaphoreTest.suite(),
332	>	SynchronousQueueTest.suite(),
333	>	SystemTest.suite(),
334	>	ThreadLocalTest.suite(),
335	>	ThreadPoolExecutorTest.suite(),
336	>	ThreadPoolExecutorSubclassTest.suite(),
337	>	ThreadTest.suite(),
338	>	TimeUnitTest.suite(),
339	>	TreeMapTest.suite(),
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
200	–
382		/**
383		* Returns the shortest timed delay. This could
384		* be reimplemented to use for example a Property.
#	Line 206 | Line 387 | public class JSR166TestCase extends Test
387		return 50;
388		}
389
209	–
390		/**
391		* Sets delays as multiples of SHORT_DELAY.
392		*/
#	Line 214 | 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 238 | 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 251 | Line 451 | public class JSR166TestCase extends Test
451		throw (RuntimeException) t;
452		else if (t instanceof Exception)
453		throw (Exception) t;
454	<	else
455	<	throw new AssertionError(t);
454	>	else {
455	>	AssertionFailedError afe =
456	>	new AssertionFailedError(t.toString());
457	>	afe.initCause(t);
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		/**
490		* Just like fail(reason), but additionally recording (using
491	<	* threadRecordFailure) any AssertionError thrown, so that the current
492	<	* testcase will fail.
491	>	* threadRecordFailure) any AssertionFailedError thrown, so that
492	>	* the current testcase will fail.
493		*/
494		public void threadFail(String reason) {
495		try {
496		fail(reason);
497	<	} catch (Throwable t) {
497	>	} catch (AssertionFailedError t) {
498		threadRecordFailure(t);
499		fail(reason);
500		}
#	Line 272 | Line 502 | public class JSR166TestCase extends Test
502
503		/**
504		* Just like assertTrue(b), but additionally recording (using
505	<	* threadRecordFailure) any AssertionError thrown, so that the current
506	<	* testcase will fail.
505	>	* threadRecordFailure) any AssertionFailedError thrown, so that
506	>	* the current testcase will fail.
507		*/
508		public void threadAssertTrue(boolean b) {
509		try {
510		assertTrue(b);
511	<	} catch (AssertionError t) {
511	>	} catch (AssertionFailedError t) {
512		threadRecordFailure(t);
513		throw t;
514		}
#	Line 286 | Line 516 | public class JSR166TestCase extends Test
516
517		/**
518		* Just like assertFalse(b), but additionally recording (using
519	<	* threadRecordFailure) any AssertionError thrown, so that the
520	<	* current testcase will fail.
519	>	* threadRecordFailure) any AssertionFailedError thrown, so that
520	>	* the current testcase will fail.
521		*/
522		public void threadAssertFalse(boolean b) {
523		try {
524		assertFalse(b);
525	<	} catch (AssertionError t) {
525	>	} catch (AssertionFailedError t) {
526		threadRecordFailure(t);
527		throw t;
528		}
#	Line 300 | Line 530 | public class JSR166TestCase extends Test
530
531		/**
532		* Just like assertNull(x), but additionally recording (using
533	<	* threadRecordFailure) any AssertionError thrown, so that the
534	<	* current testcase will fail.
533	>	* threadRecordFailure) any AssertionFailedError thrown, so that
534	>	* the current testcase will fail.
535		*/
536		public void threadAssertNull(Object x) {
537		try {
538		assertNull(x);
539	<	} catch (AssertionError t) {
539	>	} catch (AssertionFailedError t) {
540		threadRecordFailure(t);
541		throw t;
542		}
#	Line 314 | Line 544 | public class JSR166TestCase extends Test
544
545		/**
546		* Just like assertEquals(x, y), but additionally recording (using
547	<	* threadRecordFailure) any AssertionError thrown, so that the
548	<	* current testcase will fail.
547	>	* threadRecordFailure) any AssertionFailedError thrown, so that
548	>	* the current testcase will fail.
549		*/
550		public void threadAssertEquals(long x, long y) {
551		try {
552		assertEquals(x, y);
553	<	} catch (AssertionError t) {
553	>	} catch (AssertionFailedError t) {
554		threadRecordFailure(t);
555		throw t;
556		}
#	Line 328 | Line 558 | public class JSR166TestCase extends Test
558
559		/**
560		* Just like assertEquals(x, y), but additionally recording (using
561	<	* threadRecordFailure) any AssertionError thrown, so that the
562	<	* current testcase will fail.
561	>	* threadRecordFailure) any AssertionFailedError thrown, so that
562	>	* the current testcase will fail.
563		*/
564		public void threadAssertEquals(Object x, Object y) {
565		try {
566		assertEquals(x, y);
567	<	} catch (AssertionError t) {
567	>	} catch (AssertionFailedError t) {
568		threadRecordFailure(t);
569		throw t;
570	+	} catch (Throwable t) {
571	+	threadUnexpectedException(t);
572		}
573		}
574
575		/**
576		* Just like assertSame(x, y), but additionally recording (using
577	<	* threadRecordFailure) any AssertionError thrown, so that the
578	<	* current testcase will fail.
577	>	* threadRecordFailure) any AssertionFailedError thrown, so that
578	>	* the current testcase will fail.
579		*/
580		public void threadAssertSame(Object x, Object y) {
581		try {
582		assertSame(x, y);
583	<	} catch (AssertionError t) {
583	>	} catch (AssertionFailedError t) {
584		threadRecordFailure(t);
585		throw t;
586		}
#	Line 369 | Line 601 | public class JSR166TestCase extends Test
601		}
602
603		/**
604	<	* Calls threadFail with message "Unexpected exception" + ex.
604	>	* Records the given exception using {@link #threadRecordFailure},
605	>	* then rethrows the exception, wrapping it in an
606	>	* AssertionFailedError if necessary.
607		*/
608		public void threadUnexpectedException(Throwable t) {
609		threadRecordFailure(t);
610		t.printStackTrace();
377	–	// Rethrow, wrapping in an AssertionError if necessary
611		if (t instanceof RuntimeException)
612		throw (RuntimeException) t;
613		else if (t instanceof Error)
614		throw (Error) t;
615		else {
616	<	AssertionError ae = new AssertionError("unexpected exception: " + t);
617	<	t.initCause(t);
618	<	throw ae;
616	>	AssertionFailedError afe =
617	>	new AssertionFailedError("unexpected exception: " + 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) {
#	Line 401 | Line 657 | public class JSR166TestCase extends Test
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 ie) {
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 ie) {
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 e) {
731	+	threadUnexpectedException(e);
732	+	} finally { future.cancel(true); }
733	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
734	+	}
735
736		/**
737		* Fails with message "should throw exception".
#	Line 417 | Line 748 | public class JSR166TestCase extends Test
748		}
749
750		/**
420	–	* Fails with message "Unexpected exception: " + ex.
421	–	*/
422	–	public void unexpectedException(Throwable ex) {
423	–	ex.printStackTrace();
424	–	fail("Unexpected exception: " + ex);
425	–	}
426	–
427	–
428	–	/**
751		* The number of elements to place in collections, arrays, etc.
752		*/
753		public static final int SIZE = 20;
#	Line 450 | 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
453	–
775		/**
776		* Runs Runnable r with a security policy that permits precisely
777		* the specified permissions.  If there is no current security
#	Line 462 | 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 514 | 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 536 | Line 878 | public class JSR166TestCase extends Test
878		}
879
880		/**
881	<	* Sleep until the timeout has elapsed, or interrupted.
882	<	* Does <em>NOT</em> throw InterruptedException.
881	>	* Sleeps until the given time has elapsed.
882	>	* Throws AssertionFailedError if interrupted.
883	>	*/
884	>	void sleep(long millis) {
885	>	try {
886	>	delay(millis);
887	>	} catch (InterruptedException ie) {
888	>	AssertionFailedError afe =
889	>	new AssertionFailedError("Unexpected InterruptedException");
890	>	afe.initCause(ie);
891	>	throw afe;
892	>	}
893	>	}
894	>
895	>	/**
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 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	<	void sleepTillInterrupted(long timeoutMillis) {
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		/**
965	<	* Returns a new started Thread running the given runnable.
965	>	* Returns a new started daemon Thread running the given runnable.
966		*/
967		Thread newStartedThread(Runnable runnable) {
968		Thread t = new Thread(runnable);
969	+	t.setDaemon(true);
970		t.start();
971		return t;
972		}
973
974	+	/**
975	+	* Waits for the specified time (in milliseconds) for the thread
976	+	* to terminate (using {@link Thread#join(long)}), else interrupts
977	+	* the thread (in the hope that it may terminate later) and fails.
978	+	*/
979	+	void awaitTermination(Thread t, long timeoutMillis) {
980	+	try {
981	+	t.join(timeoutMillis);
982	+	} catch (InterruptedException ie) {
983	+	threadUnexpectedException(ie);
984	+	} finally {
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 616 | Line 1060 | public class JSR166TestCase extends Test
1060		realRun();
1061		threadShouldThrow("InterruptedException");
1062		} catch (InterruptedException success) {
1063	+	threadAssertFalse(Thread.interrupted());
1064		} catch (Throwable t) {
1065		threadUnexpectedException(t);
1066		}
#	Line 645 | Line 1090 | public class JSR166TestCase extends Test
1090		threadShouldThrow("InterruptedException");
1091		return result;
1092		} catch (InterruptedException success) {
1093	+	threadAssertFalse(Thread.interrupted());
1094		} catch (Throwable t) {
1095		threadUnexpectedException(t);
1096		}
#	Line 668 | Line 1114 | public class JSR166TestCase extends Test
1114
1115		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1116		return new CheckedCallable<String>() {
1117	<	public String realCall() {
1117	>	protected String realCall() {
1118		try {
1119		latch.await();
1120		} catch (InterruptedException quittingTime) {}
#	Line 676 | 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 t) {
1136	+	threadUnexpectedException(t);
1137	+	}
1138	+	}
1139	+
1140	+	public void await(Semaphore semaphore) {
1141	+	try {
1142	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1143	+	} catch (Throwable t) {
1144	+	threadUnexpectedException(t);
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 686 | 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
720	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
721	–	protected void realRun() throws InterruptedException {
722	–	Thread.sleep(SMALL_DELAY_MS);
723	–	}
724	–	}
725	–
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
1220	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1221	+	return new CheckedRunnable() {
1222	+	protected void realRun() {
1223	+	try {
1224	+	delay(timeoutMillis);
1225	+	} catch (InterruptedException ok) {}
1226	+	}};
1227	+	}
1228	+
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 746 | 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 760 | Line 1251 | public class JSR166TestCase extends Test
1251		}
1252		}
1253
1254	+	public interface TrackedRunnable extends Runnable {
1255	+	boolean isDone();
1256	+	}
1257	+
1258	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1259	+	return new TrackedRunnable() {
1260	+	private volatile boolean done = false;
1261	+	public boolean isDone() { return done; }
1262	+	public void run() {
1263	+	try {
1264	+	delay(timeoutMillis);
1265	+	done = true;
1266	+	} catch (InterruptedException ok) {}
1267	+	}
1268	+	};
1269	+	}
1270	+
1271		public static class TrackedShortRunnable implements Runnable {
1272		public volatile boolean done = false;
1273		public void run() {
1274		try {
1275	<	Thread.sleep(SMALL_DELAY_MS);
1275	>	delay(SHORT_DELAY_MS);
1276	>	done = true;
1277	>	} catch (InterruptedException ok) {}
1278	>	}
1279	>	}
1280	>
1281	>	public static class TrackedSmallRunnable implements Runnable {
1282	>	public volatile boolean done = false;
1283	>	public void run() {
1284	>	try {
1285	>	delay(SMALL_DELAY_MS);
1286		done = true;
1287		} catch (InterruptedException ok) {}
1288		}
#	Line 774 | 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 784 | 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 801 | 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 814 | 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) {
#	Line 829 | 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) {
#	Line 847 | Line 1365 | public class JSR166TestCase extends Test
1365		ThreadPoolExecutor executor) {}
1366		}
1367
1368	+	/**
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(2 * LONG_DELAY_MS, MILLISECONDS);
1378	+	} catch (TimeoutException e) {
1379	+	throw new AssertionFailedError("timed out");
1380	+	} catch (Exception e) {
1381	+	AssertionFailedError afe =
1382	+	new AssertionFailedError("Unexpected exception: " + e);
1383	+	afe.initCause(e);
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 ie) {
1412	+	threadUnexpectedException(ie);
1413	+	}
1414	+	}
1415	+
1416	+	void assertSerialEquals(Object x, Object y) {
1417	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1418	+	}
1419	+
1420	+	void assertNotSerialEquals(Object x, Object y) {
1421	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1422	+	}
1423	+
1424	+	byte[] serialBytes(Object o) {
1425	+	try {
1426	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1427	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1428	+	oos.writeObject(o);
1429	+	oos.flush();
1430	+	oos.close();
1431	+	return bos.toByteArray();
1432	+	} catch (Throwable t) {
1433	+	threadUnexpectedException(t);
1434	+	return new byte[0];
1435	+	}
1436	+	}
1437	+
1438	+	@SuppressWarnings("unchecked")
1439	+	<T> T serialClone(T o) {
1440	+	try {
1441	+	ObjectInputStream ois = new ObjectInputStream
1442	+	(new ByteArrayInputStream(serialBytes(o)));
1443	+	T clone = (T) ois.readObject();
1444	+	assertSame(o.getClass(), clone.getClass());
1445	+	return clone;
1446	+	} catch (Throwable t) {
1447	+	threadUnexpectedException(t);
1448	+	return null;
1449	+	}
1450	+	}
1451	+
1452	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1453	+	Runnable... throwingActions) {
1454	+	for (Runnable throwingAction : throwingActions) {
1455	+	boolean threw = false;
1456	+	try { throwingAction.run(); }
1457	+	catch (Throwable t) {
1458	+	threw = true;
1459	+	if (!expectedExceptionClass.isInstance(t)) {
1460	+	AssertionFailedError afe =
1461	+	new AssertionFailedError
1462	+	("Expected " + expectedExceptionClass.getName() +
1463	+	", got " + t.getClass().getName());
1464	+	afe.initCause(t);
1465	+	threadUnexpectedException(afe);
1466	+	}
1467	+	}
1468	+	if (!threw)
1469	+	shouldThrow(expectedExceptionClass.getName());
1470	+	}
1471	+	}
1472	+
1473	+	public void assertIteratorExhausted(Iterator<?> it) {
1474	+	try {
1475	+	it.next();
1476	+	shouldThrow();
1477	+	} catch (NoSuchElementException success) {}
1478	+	assertFalse(it.hasNext());
1479	+	}
1480		}

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