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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.56 by jsr166, Sun Oct 3 23:59:05 2010 UTC vs.
Revision 1.121 by jsr166, Wed Jul 9 16:51:40 2014 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;
29	+	import java.util.regex.Pattern;
30		import java.security.CodeSource;
31		import java.security.Permission;
32		import java.security.PermissionCollection;
#	Line 60 | Line 76 | import java.security.SecurityPermission;
76		*
77		* </ol>
78		*
79	<	* <p> <b>Other notes</b>
79	>	* <p><b>Other notes</b>
80		* <ul>
81		*
82		* <li> Usually, there is one testcase method per JSR166 method
#	Line 96 | Line 112 | public class JSR166TestCase extends Test
112		private static final boolean useSecurityManager =
113		Boolean.getBoolean("jsr166.useSecurityManager");
114
115	+	protected static final boolean expensiveTests =
116	+	Boolean.getBoolean("jsr166.expensiveTests");
117	+
118	+	/**
119	+	* If true, also run tests that are not part of the official tck
120	+	* because they test unspecified implementation details.
121	+	*/
122	+	protected static final boolean testImplementationDetails =
123	+	Boolean.getBoolean("jsr166.testImplementationDetails");
124	+
125		/**
126	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
126	>	* If true, report on stdout all "slow" tests, that is, ones that
127	>	* take more than profileThreshold milliseconds to execute.
128	>	*/
129	>	private static final boolean profileTests =
130	>	Boolean.getBoolean("jsr166.profileTests");
131	>
132	>	/**
133	>	* The number of milliseconds that tests are permitted for
134	>	* execution without being reported, when profileTests is set.
135	>	*/
136	>	private static final long profileThreshold =
137	>	Long.getLong("jsr166.profileThreshold", 100);
138	>
139	>	/**
140	>	* The number of repetitions per test (for tickling rare bugs).
141	>	*/
142	>	private static final int runsPerTest =
143	>	Integer.getInteger("jsr166.runsPerTest", 1);
144	>
145	>	/**
146	>	* A filter for tests to run, matching strings of the form
147	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
148	>	* Usefully combined with jsr166.runsPerTest.
149	>	*/
150	>	private static final Pattern methodFilter = methodFilter();
151	>
152	>	private static Pattern methodFilter() {
153	>	String regex = System.getProperty("jsr166.methodFilter");
154	>	return (regex == null) ? null : Pattern.compile(regex);
155	>	}
156	>
157	>	protected void runTest() throws Throwable {
158	>	if (methodFilter == null
159	>	|| methodFilter.matcher(toString()).find()) {
160	>	for (int i = 0; i < runsPerTest; i++) {
161	>	if (profileTests)
162	>	runTestProfiled();
163	>	else
164	>	super.runTest();
165	>	}
166	>	}
167	>	}
168	>
169	>	protected void runTestProfiled() throws Throwable {
170	>	// Warmup run, notably to trigger all needed classloading.
171	>	super.runTest();
172	>	long t0 = System.nanoTime();
173	>	try {
174	>	super.runTest();
175	>	} finally {
176	>	long elapsedMillis = millisElapsedSince(t0);
177	>	if (elapsedMillis >= profileThreshold)
178	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
179	>	}
180	>	}
181	>
182	>	/**
183	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
184	>	* Optional command line arg provides the number of iterations to
185	>	* repeat running the tests.
186		*/
187		public static void main(String[] args) {
188		if (useSecurityManager) {
#	Line 116 | Line 201 | public class JSR166TestCase extends Test
201		System.exit(0);
202		}
203
204	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
205	+	TestSuite suite = new TestSuite();
206	+	for (Object suiteOrClass : suiteOrClasses) {
207	+	if (suiteOrClass instanceof TestSuite)
208	+	suite.addTest((TestSuite) suiteOrClass);
209	+	else if (suiteOrClass instanceof Class)
210	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
211	+	else
212	+	throw new ClassCastException("not a test suite or class");
213	+	}
214	+	return suite;
215	+	}
216	+
217	+	public static void addNamedTestClasses(TestSuite suite,
218	+	String... testClassNames) {
219	+	for (String testClassName : testClassNames) {
220	+	try {
221	+	Class<?> testClass = Class.forName(testClassName);
222	+	Method m = testClass.getDeclaredMethod("suite",
223	+	new Class<?>[0]);
224	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
225	+	} catch (Exception e) {
226	+	throw new Error("Missing test class", e);
227	+	}
228	+	}
229	+	}
230	+
231	+	public static final double JAVA_CLASS_VERSION;
232	+	public static final String JAVA_SPECIFICATION_VERSION;
233	+	static {
234	+	try {
235	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
236	+	new java.security.PrivilegedAction<Double>() {
237	+	public Double run() {
238	+	return Double.valueOf(System.getProperty("java.class.version"));}});
239	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
240	+	new java.security.PrivilegedAction<String>() {
241	+	public String run() {
242	+	return System.getProperty("java.specification.version");}});
243	+	} catch (Throwable t) {
244	+	throw new Error(t);
245	+	}
246	+	}
247	+
248	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
249	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
250	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
251	+	public static boolean atLeastJava9() {
252	+	// As of 2014-05, java9 still uses 52.0 class file version
253	+	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
254	+	}
255	+
256		/**
257	<	* Collects all JSR166 unit tests as one suite
257	>	* Collects all JSR166 unit tests as one suite.
258		*/
259		public static Test suite() {
260	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
261	<
262	<	suite.addTest(ForkJoinPoolTest.suite());
263	<	suite.addTest(ForkJoinTaskTest.suite());
264	<	suite.addTest(RecursiveActionTest.suite());
265	<	suite.addTest(RecursiveTaskTest.suite());
266	<	suite.addTest(LinkedTransferQueueTest.suite());
267	<	suite.addTest(PhaserTest.suite());
268	<	suite.addTest(ThreadLocalRandomTest.suite());
269	<	suite.addTest(AbstractExecutorServiceTest.suite());
270	<	suite.addTest(AbstractQueueTest.suite());
271	<	suite.addTest(AbstractQueuedSynchronizerTest.suite());
272	<	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
273	<	suite.addTest(ArrayBlockingQueueTest.suite());
274	<	suite.addTest(ArrayDequeTest.suite());
275	<	suite.addTest(AtomicBooleanTest.suite());
276	<	suite.addTest(AtomicIntegerArrayTest.suite());
277	<	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
278	<	suite.addTest(AtomicIntegerTest.suite());
279	<	suite.addTest(AtomicLongArrayTest.suite());
280	<	suite.addTest(AtomicLongFieldUpdaterTest.suite());
281	<	suite.addTest(AtomicLongTest.suite());
282	<	suite.addTest(AtomicMarkableReferenceTest.suite());
283	<	suite.addTest(AtomicReferenceArrayTest.suite());
284	<	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
285	<	suite.addTest(AtomicReferenceTest.suite());
286	<	suite.addTest(AtomicStampedReferenceTest.suite());
287	<	suite.addTest(ConcurrentHashMapTest.suite());
288	<	suite.addTest(ConcurrentLinkedDequeTest.suite());
289	<	suite.addTest(ConcurrentLinkedQueueTest.suite());
290	<	suite.addTest(ConcurrentSkipListMapTest.suite());
291	<	suite.addTest(ConcurrentSkipListSubMapTest.suite());
292	<	suite.addTest(ConcurrentSkipListSetTest.suite());
293	<	suite.addTest(ConcurrentSkipListSubSetTest.suite());
294	<	suite.addTest(CopyOnWriteArrayListTest.suite());
295	<	suite.addTest(CopyOnWriteArraySetTest.suite());
296	<	suite.addTest(CountDownLatchTest.suite());
297	<	suite.addTest(CyclicBarrierTest.suite());
298	<	suite.addTest(DelayQueueTest.suite());
299	<	suite.addTest(EntryTest.suite());
300	<	suite.addTest(ExchangerTest.suite());
301	<	suite.addTest(ExecutorsTest.suite());
302	<	suite.addTest(ExecutorCompletionServiceTest.suite());
303	<	suite.addTest(FutureTaskTest.suite());
304	<	suite.addTest(LinkedBlockingDequeTest.suite());
305	<	suite.addTest(LinkedBlockingQueueTest.suite());
306	<	suite.addTest(LinkedListTest.suite());
307	<	suite.addTest(LockSupportTest.suite());
308	<	suite.addTest(PriorityBlockingQueueTest.suite());
309	<	suite.addTest(PriorityQueueTest.suite());
310	<	suite.addTest(ReentrantLockTest.suite());
311	<	suite.addTest(ReentrantReadWriteLockTest.suite());
312	<	suite.addTest(ScheduledExecutorTest.suite());
313	<	suite.addTest(ScheduledExecutorSubclassTest.suite());
314	<	suite.addTest(SemaphoreTest.suite());
315	<	suite.addTest(SynchronousQueueTest.suite());
316	<	suite.addTest(SystemTest.suite());
317	<	suite.addTest(ThreadLocalTest.suite());
318	<	suite.addTest(ThreadPoolExecutorTest.suite());
319	<	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
320	<	suite.addTest(ThreadTest.suite());
321	<	suite.addTest(TimeUnitTest.suite());
322	<	suite.addTest(TreeMapTest.suite());
323	<	suite.addTest(TreeSetTest.suite());
324	<	suite.addTest(TreeSubMapTest.suite());
325	<	suite.addTest(TreeSubSetTest.suite());
260	>	// Java7+ test classes
261	>	TestSuite suite = newTestSuite(
262	>	ForkJoinPoolTest.suite(),
263	>	ForkJoinTaskTest.suite(),
264	>	RecursiveActionTest.suite(),
265	>	RecursiveTaskTest.suite(),
266	>	LinkedTransferQueueTest.suite(),
267	>	PhaserTest.suite(),
268	>	ThreadLocalRandomTest.suite(),
269	>	AbstractExecutorServiceTest.suite(),
270	>	AbstractQueueTest.suite(),
271	>	AbstractQueuedSynchronizerTest.suite(),
272	>	AbstractQueuedLongSynchronizerTest.suite(),
273	>	ArrayBlockingQueueTest.suite(),
274	>	ArrayDequeTest.suite(),
275	>	AtomicBooleanTest.suite(),
276	>	AtomicIntegerArrayTest.suite(),
277	>	AtomicIntegerFieldUpdaterTest.suite(),
278	>	AtomicIntegerTest.suite(),
279	>	AtomicLongArrayTest.suite(),
280	>	AtomicLongFieldUpdaterTest.suite(),
281	>	AtomicLongTest.suite(),
282	>	AtomicMarkableReferenceTest.suite(),
283	>	AtomicReferenceArrayTest.suite(),
284	>	AtomicReferenceFieldUpdaterTest.suite(),
285	>	AtomicReferenceTest.suite(),
286	>	AtomicStampedReferenceTest.suite(),
287	>	ConcurrentHashMapTest.suite(),
288	>	ConcurrentLinkedDequeTest.suite(),
289	>	ConcurrentLinkedQueueTest.suite(),
290	>	ConcurrentSkipListMapTest.suite(),
291	>	ConcurrentSkipListSubMapTest.suite(),
292	>	ConcurrentSkipListSetTest.suite(),
293	>	ConcurrentSkipListSubSetTest.suite(),
294	>	CopyOnWriteArrayListTest.suite(),
295	>	CopyOnWriteArraySetTest.suite(),
296	>	CountDownLatchTest.suite(),
297	>	CyclicBarrierTest.suite(),
298	>	DelayQueueTest.suite(),
299	>	EntryTest.suite(),
300	>	ExchangerTest.suite(),
301	>	ExecutorsTest.suite(),
302	>	ExecutorCompletionServiceTest.suite(),
303	>	FutureTaskTest.suite(),
304	>	LinkedBlockingDequeTest.suite(),
305	>	LinkedBlockingQueueTest.suite(),
306	>	LinkedListTest.suite(),
307	>	LockSupportTest.suite(),
308	>	PriorityBlockingQueueTest.suite(),
309	>	PriorityQueueTest.suite(),
310	>	ReentrantLockTest.suite(),
311	>	ReentrantReadWriteLockTest.suite(),
312	>	ScheduledExecutorTest.suite(),
313	>	ScheduledExecutorSubclassTest.suite(),
314	>	SemaphoreTest.suite(),
315	>	SynchronousQueueTest.suite(),
316	>	SystemTest.suite(),
317	>	ThreadLocalTest.suite(),
318	>	ThreadPoolExecutorTest.suite(),
319	>	ThreadPoolExecutorSubclassTest.suite(),
320	>	ThreadTest.suite(),
321	>	TimeUnitTest.suite(),
322	>	TreeMapTest.suite(),
323	>	TreeSetTest.suite(),
324	>	TreeSubMapTest.suite(),
325	>	TreeSubSetTest.suite());
326	>
327	>	// Java8+ test classes
328	>	if (atLeastJava8()) {
329	>	String[] java8TestClassNames = {
330	>	"Atomic8Test",
331	>	"CompletableFutureTest",
332	>	"ConcurrentHashMap8Test",
333	>	"CountedCompleterTest",
334	>	"DoubleAccumulatorTest",
335	>	"DoubleAdderTest",
336	>	"ForkJoinPool8Test",
337	>	"ForkJoinTask8Test",
338	>	"LongAccumulatorTest",
339	>	"LongAdderTest",
340	>	"SplittableRandomTest",
341	>	"StampedLockTest",
342	>	"ThreadLocalRandom8Test",
343	>	};
344	>	addNamedTestClasses(suite, java8TestClassNames);
345	>	}
346	>
347	>	// Java9+ test classes
348	>	if (atLeastJava9()) {
349	>	String[] java9TestClassNames = {
350	>	"ThreadPoolExecutor9Test",
351	>	};
352	>	addNamedTestClasses(suite, java9TestClassNames);
353	>	}
354
355		return suite;
356		}
357
358	+	// Delays for timing-dependent tests, in milliseconds.
359
360		public static long SHORT_DELAY_MS;
361		public static long SMALL_DELAY_MS;
362		public static long MEDIUM_DELAY_MS;
363		public static long LONG_DELAY_MS;
364
199	–
365		/**
366		* Returns the shortest timed delay. This could
367		* be reimplemented to use for example a Property.
#	Line 205 | Line 370 | public class JSR166TestCase extends Test
370		return 50;
371		}
372
208	–
373		/**
374		* Sets delays as multiples of SHORT_DELAY.
375		*/
#	Line 213 | Line 377 | public class JSR166TestCase extends Test
377		SHORT_DELAY_MS = getShortDelay();
378		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
379		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
380	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
380	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
381	>	}
382	>
383	>	/**
384	>	* Returns a timeout in milliseconds to be used in tests that
385	>	* verify that operations block or time out.
386	>	*/
387	>	long timeoutMillis() {
388	>	return SHORT_DELAY_MS / 4;
389	>	}
390	>
391	>	/**
392	>	* Returns a new Date instance representing a time delayMillis
393	>	* milliseconds in the future.
394	>	*/
395	>	Date delayedDate(long delayMillis) {
396	>	return new Date(System.currentTimeMillis() + delayMillis);
397		}
398
399		/**
#	Line 237 | Line 417 | public class JSR166TestCase extends Test
417		}
418
419		/**
420	+	* Extra checks that get done for all test cases.
421	+	*
422		* Triggers test case failure if any thread assertions have failed,
423		* by rethrowing, in the test harness thread, any exception recorded
424		* earlier by threadRecordFailure.
425	+	*
426	+	* Triggers test case failure if interrupt status is set in the main thread.
427		*/
428		public void tearDown() throws Exception {
429	<	Throwable t = threadFailure.get();
429	>	Throwable t = threadFailure.getAndSet(null);
430		if (t != null) {
431		if (t instanceof Error)
432		throw (Error) t;
#	Line 250 | Line 434 | public class JSR166TestCase extends Test
434		throw (RuntimeException) t;
435		else if (t instanceof Exception)
436		throw (Exception) t;
437	<	else
438	<	throw new AssertionError(t);
437	>	else {
438	>	AssertionFailedError afe =
439	>	new AssertionFailedError(t.toString());
440	>	afe.initCause(t);
441	>	throw afe;
442	>	}
443	>	}
444	>
445	>	if (Thread.interrupted())
446	>	throw new AssertionFailedError("interrupt status set in main thread");
447	>
448	>	checkForkJoinPoolThreadLeaks();
449	>	}
450	>
451	>	/**
452	>	* Find missing try { ... } finally { joinPool(e); }
453	>	*/
454	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
455	>	Thread[] survivors = new Thread[5];
456	>	int count = Thread.enumerate(survivors);
457	>	for (int i = 0; i < count; i++) {
458	>	Thread thread = survivors[i];
459	>	String name = thread.getName();
460	>	if (name.startsWith("ForkJoinPool-")) {
461	>	// give thread some time to terminate
462	>	thread.join(LONG_DELAY_MS);
463	>	if (!thread.isAlive()) continue;
464	>	thread.stop();
465	>	throw new AssertionFailedError
466	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
467	>	toString(), name));
468	>	}
469		}
470		}
471
472		/**
473		* Just like fail(reason), but additionally recording (using
474	<	* threadRecordFailure) any AssertionError thrown, so that the current
475	<	* testcase will fail.
474	>	* threadRecordFailure) any AssertionFailedError thrown, so that
475	>	* the current testcase will fail.
476		*/
477		public void threadFail(String reason) {
478		try {
479		fail(reason);
480	<	} catch (Throwable t) {
480	>	} catch (AssertionFailedError t) {
481		threadRecordFailure(t);
482		fail(reason);
483		}
#	Line 271 | Line 485 | public class JSR166TestCase extends Test
485
486		/**
487		* Just like assertTrue(b), but additionally recording (using
488	<	* threadRecordFailure) any AssertionError thrown, so that the current
489	<	* testcase will fail.
488	>	* threadRecordFailure) any AssertionFailedError thrown, so that
489	>	* the current testcase will fail.
490		*/
491		public void threadAssertTrue(boolean b) {
492		try {
493		assertTrue(b);
494	<	} catch (AssertionError t) {
494	>	} catch (AssertionFailedError t) {
495		threadRecordFailure(t);
496		throw t;
497		}
#	Line 285 | Line 499 | public class JSR166TestCase extends Test
499
500		/**
501		* Just like assertFalse(b), but additionally recording (using
502	<	* threadRecordFailure) any AssertionError thrown, so that the
503	<	* current testcase will fail.
502	>	* threadRecordFailure) any AssertionFailedError thrown, so that
503	>	* the current testcase will fail.
504		*/
505		public void threadAssertFalse(boolean b) {
506		try {
507		assertFalse(b);
508	<	} catch (AssertionError t) {
508	>	} catch (AssertionFailedError t) {
509		threadRecordFailure(t);
510		throw t;
511		}
#	Line 299 | Line 513 | public class JSR166TestCase extends Test
513
514		/**
515		* Just like assertNull(x), but additionally recording (using
516	<	* threadRecordFailure) any AssertionError thrown, so that the
517	<	* current testcase will fail.
516	>	* threadRecordFailure) any AssertionFailedError thrown, so that
517	>	* the current testcase will fail.
518		*/
519		public void threadAssertNull(Object x) {
520		try {
521		assertNull(x);
522	<	} catch (AssertionError t) {
522	>	} catch (AssertionFailedError t) {
523		threadRecordFailure(t);
524		throw t;
525		}
#	Line 313 | Line 527 | public class JSR166TestCase extends Test
527
528		/**
529		* Just like assertEquals(x, y), but additionally recording (using
530	<	* threadRecordFailure) any AssertionError thrown, so that the
531	<	* current testcase will fail.
530	>	* threadRecordFailure) any AssertionFailedError thrown, so that
531	>	* the current testcase will fail.
532		*/
533		public void threadAssertEquals(long x, long y) {
534		try {
535		assertEquals(x, y);
536	<	} catch (AssertionError t) {
536	>	} catch (AssertionFailedError t) {
537		threadRecordFailure(t);
538		throw t;
539		}
#	Line 327 | Line 541 | public class JSR166TestCase extends Test
541
542		/**
543		* Just like assertEquals(x, y), but additionally recording (using
544	<	* threadRecordFailure) any AssertionError thrown, so that the
545	<	* current testcase will fail.
544	>	* threadRecordFailure) any AssertionFailedError thrown, so that
545	>	* the current testcase will fail.
546		*/
547		public void threadAssertEquals(Object x, Object y) {
548		try {
549		assertEquals(x, y);
550	<	} catch (AssertionError t) {
550	>	} catch (AssertionFailedError t) {
551		threadRecordFailure(t);
552		throw t;
553	+	} catch (Throwable t) {
554	+	threadUnexpectedException(t);
555		}
556		}
557
558		/**
559		* Just like assertSame(x, y), but additionally recording (using
560	<	* threadRecordFailure) any AssertionError thrown, so that the
561	<	* current testcase will fail.
560	>	* threadRecordFailure) any AssertionFailedError thrown, so that
561	>	* the current testcase will fail.
562		*/
563		public void threadAssertSame(Object x, Object y) {
564		try {
565		assertSame(x, y);
566	<	} catch (AssertionError t) {
566	>	} catch (AssertionFailedError t) {
567		threadRecordFailure(t);
568		throw t;
569		}
#	Line 368 | Line 584 | public class JSR166TestCase extends Test
584		}
585
586		/**
587	<	* Calls threadFail with message "Unexpected exception" + ex.
587	>	* Records the given exception using {@link #threadRecordFailure},
588	>	* then rethrows the exception, wrapping it in an
589	>	* AssertionFailedError if necessary.
590		*/
591		public void threadUnexpectedException(Throwable t) {
592		threadRecordFailure(t);
593		t.printStackTrace();
376	–	// Rethrow, wrapping in an AssertionError if necessary
594		if (t instanceof RuntimeException)
595		throw (RuntimeException) t;
596		else if (t instanceof Error)
597		throw (Error) t;
598		else {
599	<	AssertionError ae = new AssertionError("unexpected exception: " + t);
600	<	t.initCause(t);
601	<	throw ae;
599	>	AssertionFailedError afe =
600	>	new AssertionFailedError("unexpected exception: " + t);
601	>	afe.initCause(t);
602	>	throw afe;
603	>	}
604	>	}
605	>
606	>	/**
607	>	* Delays, via Thread.sleep, for the given millisecond delay, but
608	>	* if the sleep is shorter than specified, may re-sleep or yield
609	>	* until time elapses.
610	>	*/
611	>	static void delay(long millis) throws InterruptedException {
612	>	long startTime = System.nanoTime();
613	>	long ns = millis * 1000 * 1000;
614	>	for (;;) {
615	>	if (millis > 0L)
616	>	Thread.sleep(millis);
617	>	else // too short to sleep
618	>	Thread.yield();
619	>	long d = ns - (System.nanoTime() - startTime);
620	>	if (d > 0L)
621	>	millis = d / (1000 * 1000);
622	>	else
623	>	break;
624		}
625		}
626
627		/**
628		* Waits out termination of a thread pool or fails doing so.
629		*/
630	<	public void joinPool(ExecutorService exec) {
630	>	void joinPool(ExecutorService exec) {
631		try {
632		exec.shutdown();
633	<	assertTrue("ExecutorService did not terminate in a timely manner",
634	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
633	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
634	>	fail("ExecutorService " + exec +
635	>	" did not terminate in a timely manner");
636		} catch (SecurityException ok) {
637		// Allowed in case test doesn't have privs
638		} catch (InterruptedException ie) {
#	Line 400 | Line 640 | public class JSR166TestCase extends Test
640		}
641		}
642
643	+	/**
644	+	* A debugging tool to print all stack traces, as jstack does.
645	+	*/
646	+	static void printAllStackTraces() {
647	+	for (ThreadInfo info :
648	+	ManagementFactory.getThreadMXBean()
649	+	.dumpAllThreads(true, true))
650	+	System.err.print(info);
651	+	}
652	+
653	+	/**
654	+	* Checks that thread does not terminate within the default
655	+	* millisecond delay of {@code timeoutMillis()}.
656	+	*/
657	+	void assertThreadStaysAlive(Thread thread) {
658	+	assertThreadStaysAlive(thread, timeoutMillis());
659	+	}
660	+
661	+	/**
662	+	* Checks that thread does not terminate within the given millisecond delay.
663	+	*/
664	+	void assertThreadStaysAlive(Thread thread, long millis) {
665	+	try {
666	+	// No need to optimize the failing case via Thread.join.
667	+	delay(millis);
668	+	assertTrue(thread.isAlive());
669	+	} catch (InterruptedException ie) {
670	+	fail("Unexpected InterruptedException");
671	+	}
672	+	}
673	+
674	+	/**
675	+	* Checks that the threads do not terminate within the default
676	+	* millisecond delay of {@code timeoutMillis()}.
677	+	*/
678	+	void assertThreadsStayAlive(Thread... threads) {
679	+	assertThreadsStayAlive(timeoutMillis(), threads);
680	+	}
681	+
682	+	/**
683	+	* Checks that the threads do not terminate within the given millisecond delay.
684	+	*/
685	+	void assertThreadsStayAlive(long millis, Thread... threads) {
686	+	try {
687	+	// No need to optimize the failing case via Thread.join.
688	+	delay(millis);
689	+	for (Thread thread : threads)
690	+	assertTrue(thread.isAlive());
691	+	} catch (InterruptedException ie) {
692	+	fail("Unexpected InterruptedException");
693	+	}
694	+	}
695	+
696	+	/**
697	+	* Checks that future.get times out, with the default timeout of
698	+	* {@code timeoutMillis()}.
699	+	*/
700	+	void assertFutureTimesOut(Future future) {
701	+	assertFutureTimesOut(future, timeoutMillis());
702	+	}
703	+
704	+	/**
705	+	* Checks that future.get times out, with the given millisecond timeout.
706	+	*/
707	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
708	+	long startTime = System.nanoTime();
709	+	try {
710	+	future.get(timeoutMillis, MILLISECONDS);
711	+	shouldThrow();
712	+	} catch (TimeoutException success) {
713	+	} catch (Exception e) {
714	+	threadUnexpectedException(e);
715	+	} finally { future.cancel(true); }
716	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
717	+	}
718
719		/**
720		* Fails with message "should throw exception".
#	Line 416 | Line 731 | public class JSR166TestCase extends Test
731		}
732
733		/**
419	–	* Fails with message "Unexpected exception: " + ex.
420	–	*/
421	–	public void unexpectedException(Throwable ex) {
422	–	ex.printStackTrace();
423	–	fail("Unexpected exception: " + ex);
424	–	}
425	–
426	–
427	–	/**
734		* The number of elements to place in collections, arrays, etc.
735		*/
736		public static final int SIZE = 20;
#	Line 449 | Line 755 | public class JSR166TestCase extends Test
755		public static final Integer m6  = new Integer(-6);
756		public static final Integer m10 = new Integer(-10);
757
452	–
758		/**
759		* Runs Runnable r with a security policy that permits precisely
760		* the specified permissions.  If there is no current security
#	Line 461 | Line 766 | public class JSR166TestCase extends Test
766		SecurityManager sm = System.getSecurityManager();
767		if (sm == null) {
768		r.run();
769	+	}
770	+	runWithSecurityManagerWithPermissions(r, permissions);
771	+	}
772	+
773	+	/**
774	+	* Runs Runnable r with a security policy that permits precisely
775	+	* the specified permissions.  If there is no current security
776	+	* manager, a temporary one is set for the duration of the
777	+	* Runnable.  We require that any security manager permit
778	+	* getPolicy/setPolicy.
779	+	*/
780	+	public void runWithSecurityManagerWithPermissions(Runnable r,
781	+	Permission... permissions) {
782	+	SecurityManager sm = System.getSecurityManager();
783	+	if (sm == null) {
784		Policy savedPolicy = Policy.getPolicy();
785		try {
786		Policy.setPolicy(permissivePolicy());
787		System.setSecurityManager(new SecurityManager());
788	<	runWithPermissions(r, permissions);
788	>	runWithSecurityManagerWithPermissions(r, permissions);
789		} finally {
790		System.setSecurityManager(null);
791		Policy.setPolicy(savedPolicy);
#	Line 513 | Line 833 | public class JSR166TestCase extends Test
833		return perms.implies(p);
834		}
835		public void refresh() {}
836	+	public String toString() {
837	+	List<Permission> ps = new ArrayList<Permission>();
838	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
839	+	ps.add(e.nextElement());
840	+	return "AdjustablePolicy with permissions " + ps;
841	+	}
842		}
843
844		/**
#	Line 535 | Line 861 | public class JSR166TestCase extends Test
861		}
862
863		/**
864	<	* Sleep until the timeout has elapsed, or interrupted.
865	<	* Does <em>NOT</em> throw InterruptedException.
864	>	* Sleeps until the given time has elapsed.
865	>	* Throws AssertionFailedError if interrupted.
866		*/
867	<	void sleepTillInterrupted(long timeoutMillis) {
867	>	void sleep(long millis) {
868		try {
869	<	Thread.sleep(timeoutMillis);
870	<	} catch (InterruptedException wakeup) {}
869	>	delay(millis);
870	>	} catch (InterruptedException ie) {
871	>	AssertionFailedError afe =
872	>	new AssertionFailedError("Unexpected InterruptedException");
873	>	afe.initCause(ie);
874	>	throw afe;
875	>	}
876		}
877
878		/**
879	<	* Returns a new started Thread running the given runnable.
879	>	* Spin-waits up to the specified number of milliseconds for the given
880	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
881	>	*/
882	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
883	>	long startTime = System.nanoTime();
884	>	for (;;) {
885	>	Thread.State s = thread.getState();
886	>	if (s == Thread.State.BLOCKED ||
887	>	s == Thread.State.WAITING ||
888	>	s == Thread.State.TIMED_WAITING)
889	>	return;
890	>	else if (s == Thread.State.TERMINATED)
891	>	fail("Unexpected thread termination");
892	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
893	>	threadAssertTrue(thread.isAlive());
894	>	return;
895	>	}
896	>	Thread.yield();
897	>	}
898	>	}
899	>
900	>	/**
901	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
902	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
903	>	*/
904	>	void waitForThreadToEnterWaitState(Thread thread) {
905	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
906	>	}
907	>
908	>	/**
909	>	* Returns the number of milliseconds since time given by
910	>	* startNanoTime, which must have been previously returned from a
911	>	* call to {@link System.nanoTime()}.
912	>	*/
913	>	static long millisElapsedSince(long startNanoTime) {
914	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
915	>	}
916	>
917	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
918	>	//         long startTime = System.nanoTime();
919	>	//         try {
920	>	//             r.run();
921	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
922	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
923	>	//             throw new AssertionFailedError("did not return promptly");
924	>	//     }
925	>
926	>	//     void assertTerminatesPromptly(Runnable r) {
927	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
928	>	//     }
929	>
930	>	/**
931	>	* Checks that timed f.get() returns the expected value, and does not
932	>	* wait for the timeout to elapse before returning.
933	>	*/
934	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
935	>	long startTime = System.nanoTime();
936	>	try {
937	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
938	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
939	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
940	>	throw new AssertionFailedError("timed get did not return promptly");
941	>	}
942	>
943	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
944	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
945	>	}
946	>
947	>	/**
948	>	* Returns a new started daemon Thread running the given runnable.
949		*/
950		Thread newStartedThread(Runnable runnable) {
951		Thread t = new Thread(runnable);
952	+	t.setDaemon(true);
953		t.start();
954		return t;
955		}
956
957	+	/**
958	+	* Waits for the specified time (in milliseconds) for the thread
959	+	* to terminate (using {@link Thread#join(long)}), else interrupts
960	+	* the thread (in the hope that it may terminate later) and fails.
961	+	*/
962	+	void awaitTermination(Thread t, long timeoutMillis) {
963	+	try {
964	+	t.join(timeoutMillis);
965	+	} catch (InterruptedException ie) {
966	+	threadUnexpectedException(ie);
967	+	} finally {
968	+	if (t.getState() != Thread.State.TERMINATED) {
969	+	t.interrupt();
970	+	fail("Test timed out");
971	+	}
972	+	}
973	+	}
974	+
975	+	/**
976	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
977	+	* terminate (using {@link Thread#join(long)}), else interrupts
978	+	* the thread (in the hope that it may terminate later) and fails.
979	+	*/
980	+	void awaitTermination(Thread t) {
981	+	awaitTermination(t, LONG_DELAY_MS);
982	+	}
983	+
984		// Some convenient Runnable classes
985
986		public abstract class CheckedRunnable implements Runnable {
#	Line 615 | Line 1043 | public class JSR166TestCase extends Test
1043		realRun();
1044		threadShouldThrow("InterruptedException");
1045		} catch (InterruptedException success) {
1046	+	threadAssertFalse(Thread.interrupted());
1047		} catch (Throwable t) {
1048		threadUnexpectedException(t);
1049		}
#	Line 644 | Line 1073 | public class JSR166TestCase extends Test
1073		threadShouldThrow("InterruptedException");
1074		return result;
1075		} catch (InterruptedException success) {
1076	+	threadAssertFalse(Thread.interrupted());
1077		} catch (Throwable t) {
1078		threadUnexpectedException(t);
1079		}
#	Line 667 | Line 1097 | public class JSR166TestCase extends Test
1097
1098		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1099		return new CheckedCallable<String>() {
1100	<	public String realCall() {
1100	>	protected String realCall() {
1101		try {
1102		latch.await();
1103		} catch (InterruptedException quittingTime) {}
#	Line 675 | Line 1105 | public class JSR166TestCase extends Test
1105		}};
1106		}
1107
1108	+	public Runnable awaiter(final CountDownLatch latch) {
1109	+	return new CheckedRunnable() {
1110	+	public void realRun() throws InterruptedException {
1111	+	await(latch);
1112	+	}};
1113	+	}
1114	+
1115	+	public void await(CountDownLatch latch) {
1116	+	try {
1117	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1118	+	} catch (Throwable t) {
1119	+	threadUnexpectedException(t);
1120	+	}
1121	+	}
1122	+
1123	+	public void await(Semaphore semaphore) {
1124	+	try {
1125	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1126	+	} catch (Throwable t) {
1127	+	threadUnexpectedException(t);
1128	+	}
1129	+	}
1130	+
1131	+	//     /**
1132	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1133	+	//      */
1134	+	//     public void await(AtomicBoolean flag) {
1135	+	//         await(flag, LONG_DELAY_MS);
1136	+	//     }
1137	+
1138	+	//     /**
1139	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1140	+	//      */
1141	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1142	+	//         long startTime = System.nanoTime();
1143	+	//         while (!flag.get()) {
1144	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1145	+	//                 throw new AssertionFailedError("timed out");
1146	+	//             Thread.yield();
1147	+	//         }
1148	+	//     }
1149	+
1150		public static class NPETask implements Callable<String> {
1151		public String call() { throw new NullPointerException(); }
1152		}
#	Line 685 | Line 1157 | public class JSR166TestCase extends Test
1157
1158		public class ShortRunnable extends CheckedRunnable {
1159		protected void realRun() throws Throwable {
1160	<	Thread.sleep(SHORT_DELAY_MS);
1160	>	delay(SHORT_DELAY_MS);
1161		}
1162		}
1163
1164		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1165		protected void realRun() throws InterruptedException {
1166	<	Thread.sleep(SHORT_DELAY_MS);
1166	>	delay(SHORT_DELAY_MS);
1167		}
1168		}
1169
1170		public class SmallRunnable extends CheckedRunnable {
1171		protected void realRun() throws Throwable {
1172	<	Thread.sleep(SMALL_DELAY_MS);
1172	>	delay(SMALL_DELAY_MS);
1173		}
1174		}
1175
1176		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1177		protected void realRun() {
1178		try {
1179	<	Thread.sleep(SMALL_DELAY_MS);
1179	>	delay(SMALL_DELAY_MS);
1180		} catch (InterruptedException ok) {}
1181		}
1182		}
1183
1184		public class SmallCallable extends CheckedCallable {
1185		protected Object realCall() throws InterruptedException {
1186	<	Thread.sleep(SMALL_DELAY_MS);
1186	>	delay(SMALL_DELAY_MS);
1187		return Boolean.TRUE;
1188		}
1189		}
1190
719	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
720	–	protected void realRun() throws InterruptedException {
721	–	Thread.sleep(SMALL_DELAY_MS);
722	–	}
723	–	}
724	–
1191		public class MediumRunnable extends CheckedRunnable {
1192		protected void realRun() throws Throwable {
1193	<	Thread.sleep(MEDIUM_DELAY_MS);
1193	>	delay(MEDIUM_DELAY_MS);
1194		}
1195		}
1196
1197		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1198		protected void realRun() throws InterruptedException {
1199	<	Thread.sleep(MEDIUM_DELAY_MS);
1199	>	delay(MEDIUM_DELAY_MS);
1200		}
1201		}
1202
1203	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1204	+	return new CheckedRunnable() {
1205	+	protected void realRun() {
1206	+	try {
1207	+	delay(timeoutMillis);
1208	+	} catch (InterruptedException ok) {}
1209	+	}};
1210	+	}
1211	+
1212		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1213		protected void realRun() {
1214		try {
1215	<	Thread.sleep(MEDIUM_DELAY_MS);
1215	>	delay(MEDIUM_DELAY_MS);
1216		} catch (InterruptedException ok) {}
1217		}
1218		}
#	Line 745 | Line 1220 | public class JSR166TestCase extends Test
1220		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1221		protected void realRun() {
1222		try {
1223	<	Thread.sleep(LONG_DELAY_MS);
1223	>	delay(LONG_DELAY_MS);
1224		} catch (InterruptedException ok) {}
1225		}
1226		}
#	Line 759 | Line 1234 | public class JSR166TestCase extends Test
1234		}
1235		}
1236
1237	+	public interface TrackedRunnable extends Runnable {
1238	+	boolean isDone();
1239	+	}
1240	+
1241	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1242	+	return new TrackedRunnable() {
1243	+	private volatile boolean done = false;
1244	+	public boolean isDone() { return done; }
1245	+	public void run() {
1246	+	try {
1247	+	delay(timeoutMillis);
1248	+	done = true;
1249	+	} catch (InterruptedException ok) {}
1250	+	}
1251	+	};
1252	+	}
1253	+
1254		public static class TrackedShortRunnable implements Runnable {
1255		public volatile boolean done = false;
1256		public void run() {
1257		try {
1258	<	Thread.sleep(SMALL_DELAY_MS);
1258	>	delay(SHORT_DELAY_MS);
1259	>	done = true;
1260	>	} catch (InterruptedException ok) {}
1261	>	}
1262	>	}
1263	>
1264	>	public static class TrackedSmallRunnable implements Runnable {
1265	>	public volatile boolean done = false;
1266	>	public void run() {
1267	>	try {
1268	>	delay(SMALL_DELAY_MS);
1269		done = true;
1270		} catch (InterruptedException ok) {}
1271		}
#	Line 773 | Line 1275 | public class JSR166TestCase extends Test
1275		public volatile boolean done = false;
1276		public void run() {
1277		try {
1278	<	Thread.sleep(MEDIUM_DELAY_MS);
1278	>	delay(MEDIUM_DELAY_MS);
1279		done = true;
1280		} catch (InterruptedException ok) {}
1281		}
#	Line 783 | Line 1285 | public class JSR166TestCase extends Test
1285		public volatile boolean done = false;
1286		public void run() {
1287		try {
1288	<	Thread.sleep(LONG_DELAY_MS);
1288	>	delay(LONG_DELAY_MS);
1289		done = true;
1290		} catch (InterruptedException ok) {}
1291		}
#	Line 800 | Line 1302 | public class JSR166TestCase extends Test
1302		public volatile boolean done = false;
1303		public Object call() {
1304		try {
1305	<	Thread.sleep(SMALL_DELAY_MS);
1305	>	delay(SMALL_DELAY_MS);
1306		done = true;
1307		} catch (InterruptedException ok) {}
1308		return Boolean.TRUE;
#	Line 813 | Line 1315 | public class JSR166TestCase extends Test
1315		public abstract class CheckedRecursiveAction extends RecursiveAction {
1316		protected abstract void realCompute() throws Throwable;
1317
1318	<	public final void compute() {
1318	>	@Override protected final void compute() {
1319		try {
1320		realCompute();
1321		} catch (Throwable t) {
#	Line 828 | Line 1330 | public class JSR166TestCase extends Test
1330		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1331		protected abstract T realCompute() throws Throwable;
1332
1333	<	public final T compute() {
1333	>	@Override protected final T compute() {
1334		try {
1335		return realCompute();
1336		} catch (Throwable t) {
#	Line 846 | Line 1348 | public class JSR166TestCase extends Test
1348		ThreadPoolExecutor executor) {}
1349		}
1350
1351	+	/**
1352	+	* A CyclicBarrier that uses timed await and fails with
1353	+	* AssertionFailedErrors instead of throwing checked exceptions.
1354	+	*/
1355	+	public class CheckedBarrier extends CyclicBarrier {
1356	+	public CheckedBarrier(int parties) { super(parties); }
1357	+
1358	+	public int await() {
1359	+	try {
1360	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1361	+	} catch (TimeoutException e) {
1362	+	throw new AssertionFailedError("timed out");
1363	+	} catch (Exception e) {
1364	+	AssertionFailedError afe =
1365	+	new AssertionFailedError("Unexpected exception: " + e);
1366	+	afe.initCause(e);
1367	+	throw afe;
1368	+	}
1369	+	}
1370	+	}
1371	+
1372	+	void checkEmpty(BlockingQueue q) {
1373	+	try {
1374	+	assertTrue(q.isEmpty());
1375	+	assertEquals(0, q.size());
1376	+	assertNull(q.peek());
1377	+	assertNull(q.poll());
1378	+	assertNull(q.poll(0, MILLISECONDS));
1379	+	assertEquals(q.toString(), "[]");
1380	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1381	+	assertFalse(q.iterator().hasNext());
1382	+	try {
1383	+	q.element();
1384	+	shouldThrow();
1385	+	} catch (NoSuchElementException success) {}
1386	+	try {
1387	+	q.iterator().next();
1388	+	shouldThrow();
1389	+	} catch (NoSuchElementException success) {}
1390	+	try {
1391	+	q.remove();
1392	+	shouldThrow();
1393	+	} catch (NoSuchElementException success) {}
1394	+	} catch (InterruptedException ie) {
1395	+	threadUnexpectedException(ie);
1396	+	}
1397	+	}
1398	+
1399	+	void assertSerialEquals(Object x, Object y) {
1400	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1401	+	}
1402	+
1403	+	void assertNotSerialEquals(Object x, Object y) {
1404	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1405	+	}
1406	+
1407	+	byte[] serialBytes(Object o) {
1408	+	try {
1409	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1410	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1411	+	oos.writeObject(o);
1412	+	oos.flush();
1413	+	oos.close();
1414	+	return bos.toByteArray();
1415	+	} catch (Throwable t) {
1416	+	threadUnexpectedException(t);
1417	+	return new byte[0];
1418	+	}
1419	+	}
1420	+
1421	+	@SuppressWarnings("unchecked")
1422	+	<T> T serialClone(T o) {
1423	+	try {
1424	+	ObjectInputStream ois = new ObjectInputStream
1425	+	(new ByteArrayInputStream(serialBytes(o)));
1426	+	T clone = (T) ois.readObject();
1427	+	assertSame(o.getClass(), clone.getClass());
1428	+	return clone;
1429	+	} catch (Throwable t) {
1430	+	threadUnexpectedException(t);
1431	+	return null;
1432	+	}
1433	+	}
1434	+
1435	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1436	+	Runnable... throwingActions) {
1437	+	for (Runnable throwingAction : throwingActions) {
1438	+	boolean threw = false;
1439	+	try { throwingAction.run(); }
1440	+	catch (Throwable t) {
1441	+	threw = true;
1442	+	if (!expectedExceptionClass.isInstance(t)) {
1443	+	AssertionFailedError afe =
1444	+	new AssertionFailedError
1445	+	("Expected " + expectedExceptionClass.getName() +
1446	+	", got " + t.getClass().getName());
1447	+	afe.initCause(t);
1448	+	threadUnexpectedException(afe);
1449	+	}
1450	+	}
1451	+	if (!threw)
1452	+	shouldThrow(expectedExceptionClass.getName());
1453	+	}
1454	+	}
1455		}

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