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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 1.119 by jsr166, Mon Jun 16 20:13:54 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	+	* 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
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 105 | Line 190 | public class JSR166TestCase extends Test
190		Policy.setPolicy(permissivePolicy());
191		System.setSecurityManager(new SecurityManager());
192		}
193	<	int iters = 1;
194	<	if (args.length > 0)
110	<	iters = Integer.parseInt(args[0]);
193	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
194	>
195		Test s = suite();
196		for (int i = 0; i < iters; ++i) {
197		junit.textui.TestRunner.run(s);
#	Line 117 | 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(new TestSuite(ForkJoinPoolTest.class));
263	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
264	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
265	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
266	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
267	<	suite.addTest(new TestSuite(PhaserTest.class));
268	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
269	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
270	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
271	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
272	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
273	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
274	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
275	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
276	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
277	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
278	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
279	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
280	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
281	<	suite.addTest(new TestSuite(AtomicLongTest.class));
282	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
283	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
284	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
285	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
286	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
287	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
288	<	suite.addTest(new TestSuite(ConcurrentLinkedDequeTest.class));
289	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
290	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
291	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
292	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
293	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
294	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
295	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
296	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
297	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
298	<	suite.addTest(new TestSuite(DelayQueueTest.class));
299	<	suite.addTest(new TestSuite(EntryTest.class));
300	<	suite.addTest(new TestSuite(ExchangerTest.class));
301	<	suite.addTest(new TestSuite(ExecutorsTest.class));
302	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
303	<	suite.addTest(new TestSuite(FutureTaskTest.class));
304	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
305	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
306	<	suite.addTest(new TestSuite(LinkedListTest.class));
307	<	suite.addTest(new TestSuite(LockSupportTest.class));
308	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
309	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
310	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
311	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
312	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
313	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
314	<	suite.addTest(new TestSuite(SemaphoreTest.class));
315	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
316	<	suite.addTest(new TestSuite(SystemTest.class));
317	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
318	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
319	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
320	<	suite.addTest(new TestSuite(ThreadTest.class));
321	<	suite.addTest(new TestSuite(TimeUnitTest.class));
322	<	suite.addTest(new TestSuite(TreeMapTest.class));
323	<	suite.addTest(new TestSuite(TreeSetTest.class));
324	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
325	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
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
200	–
365		/**
366		* Returns the shortest timed delay. This could
367		* be reimplemented to use for example a Property.
#	Line 206 | Line 370 | public class JSR166TestCase extends Test
370		return 50;
371		}
372
209	–
373		/**
374		* Sets delays as multiples of SHORT_DELAY.
375		*/
#	Line 214 | 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 238 | 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 251 | 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 272 | 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 286 | 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 300 | 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 314 | 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 328 | 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 369 | 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();
377	–	// 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));
634	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
635		} catch (SecurityException ok) {
636		// Allowed in case test doesn't have privs
637		} catch (InterruptedException ie) {
#	Line 401 | Line 639 | public class JSR166TestCase extends Test
639		}
640		}
641
642	+	/**
643	+	* A debugging tool to print all stack traces, as jstack does.
644	+	*/
645	+	static void printAllStackTraces() {
646	+	for (ThreadInfo info :
647	+	ManagementFactory.getThreadMXBean()
648	+	.dumpAllThreads(true, true))
649	+	System.err.print(info);
650	+	}
651	+
652	+	/**
653	+	* Checks that thread does not terminate within the default
654	+	* millisecond delay of {@code timeoutMillis()}.
655	+	*/
656	+	void assertThreadStaysAlive(Thread thread) {
657	+	assertThreadStaysAlive(thread, timeoutMillis());
658	+	}
659	+
660	+	/**
661	+	* Checks that thread does not terminate within the given millisecond delay.
662	+	*/
663	+	void assertThreadStaysAlive(Thread thread, long millis) {
664	+	try {
665	+	// No need to optimize the failing case via Thread.join.
666	+	delay(millis);
667	+	assertTrue(thread.isAlive());
668	+	} catch (InterruptedException ie) {
669	+	fail("Unexpected InterruptedException");
670	+	}
671	+	}
672	+
673	+	/**
674	+	* Checks that the threads do not terminate within the default
675	+	* millisecond delay of {@code timeoutMillis()}.
676	+	*/
677	+	void assertThreadsStayAlive(Thread... threads) {
678	+	assertThreadsStayAlive(timeoutMillis(), threads);
679	+	}
680	+
681	+	/**
682	+	* Checks that the threads do not terminate within the given millisecond delay.
683	+	*/
684	+	void assertThreadsStayAlive(long millis, Thread... threads) {
685	+	try {
686	+	// No need to optimize the failing case via Thread.join.
687	+	delay(millis);
688	+	for (Thread thread : threads)
689	+	assertTrue(thread.isAlive());
690	+	} catch (InterruptedException ie) {
691	+	fail("Unexpected InterruptedException");
692	+	}
693	+	}
694	+
695	+	/**
696	+	* Checks that future.get times out, with the default timeout of
697	+	* {@code timeoutMillis()}.
698	+	*/
699	+	void assertFutureTimesOut(Future future) {
700	+	assertFutureTimesOut(future, timeoutMillis());
701	+	}
702	+
703	+	/**
704	+	* Checks that future.get times out, with the given millisecond timeout.
705	+	*/
706	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
707	+	long startTime = System.nanoTime();
708	+	try {
709	+	future.get(timeoutMillis, MILLISECONDS);
710	+	shouldThrow();
711	+	} catch (TimeoutException success) {
712	+	} catch (Exception e) {
713	+	threadUnexpectedException(e);
714	+	} finally { future.cancel(true); }
715	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
716	+	}
717
718		/**
719		* Fails with message "should throw exception".
#	Line 417 | Line 730 | public class JSR166TestCase extends Test
730		}
731
732		/**
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	–	/**
733		* The number of elements to place in collections, arrays, etc.
734		*/
735		public static final int SIZE = 20;
#	Line 450 | Line 754 | public class JSR166TestCase extends Test
754		public static final Integer m6  = new Integer(-6);
755		public static final Integer m10 = new Integer(-10);
756
453	–
757		/**
758		* Runs Runnable r with a security policy that permits precisely
759		* the specified permissions.  If there is no current security
#	Line 462 | Line 765 | public class JSR166TestCase extends Test
765		SecurityManager sm = System.getSecurityManager();
766		if (sm == null) {
767		r.run();
768	+	}
769	+	runWithSecurityManagerWithPermissions(r, permissions);
770	+	}
771	+
772	+	/**
773	+	* Runs Runnable r with a security policy that permits precisely
774	+	* the specified permissions.  If there is no current security
775	+	* manager, a temporary one is set for the duration of the
776	+	* Runnable.  We require that any security manager permit
777	+	* getPolicy/setPolicy.
778	+	*/
779	+	public void runWithSecurityManagerWithPermissions(Runnable r,
780	+	Permission... permissions) {
781	+	SecurityManager sm = System.getSecurityManager();
782	+	if (sm == null) {
783		Policy savedPolicy = Policy.getPolicy();
784		try {
785		Policy.setPolicy(permissivePolicy());
786		System.setSecurityManager(new SecurityManager());
787	<	runWithPermissions(r, permissions);
787	>	runWithSecurityManagerWithPermissions(r, permissions);
788		} finally {
789		System.setSecurityManager(null);
790		Policy.setPolicy(savedPolicy);
#	Line 514 | Line 832 | public class JSR166TestCase extends Test
832		return perms.implies(p);
833		}
834		public void refresh() {}
835	+	public String toString() {
836	+	List<Permission> ps = new ArrayList<Permission>();
837	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
838	+	ps.add(e.nextElement());
839	+	return "AdjustablePolicy with permissions " + ps;
840	+	}
841		}
842
843		/**
#	Line 536 | Line 860 | public class JSR166TestCase extends Test
860		}
861
862		/**
863	<	* Sleep until the timeout has elapsed, or interrupted.
864	<	* Does <em>NOT</em> throw InterruptedException.
863	>	* Sleeps until the given time has elapsed.
864	>	* Throws AssertionFailedError if interrupted.
865		*/
866	<	void sleepTillInterrupted(long timeoutMillis) {
866	>	void sleep(long millis) {
867		try {
868	<	Thread.sleep(timeoutMillis);
869	<	} catch (InterruptedException wakeup) {}
868	>	delay(millis);
869	>	} catch (InterruptedException ie) {
870	>	AssertionFailedError afe =
871	>	new AssertionFailedError("Unexpected InterruptedException");
872	>	afe.initCause(ie);
873	>	throw afe;
874	>	}
875	>	}
876	>
877	>	/**
878	>	* Spin-waits up to the specified number of milliseconds for the given
879	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
880	>	*/
881	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
882	>	long startTime = System.nanoTime();
883	>	for (;;) {
884	>	Thread.State s = thread.getState();
885	>	if (s == Thread.State.BLOCKED ||
886	>	s == Thread.State.WAITING ||
887	>	s == Thread.State.TIMED_WAITING)
888	>	return;
889	>	else if (s == Thread.State.TERMINATED)
890	>	fail("Unexpected thread termination");
891	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
892	>	threadAssertTrue(thread.isAlive());
893	>	return;
894	>	}
895	>	Thread.yield();
896	>	}
897		}
898
899		/**
900	<	* Returns a new started Thread running the given runnable.
900	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
901	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
902	>	*/
903	>	void waitForThreadToEnterWaitState(Thread thread) {
904	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
905	>	}
906	>
907	>	/**
908	>	* Returns the number of milliseconds since time given by
909	>	* startNanoTime, which must have been previously returned from a
910	>	* call to {@link System.nanoTime()}.
911	>	*/
912	>	static long millisElapsedSince(long startNanoTime) {
913	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
914	>	}
915	>
916	>	/**
917	>	* Returns a new started daemon Thread running the given runnable.
918		*/
919		Thread newStartedThread(Runnable runnable) {
920		Thread t = new Thread(runnable);
921	+	t.setDaemon(true);
922		t.start();
923		return t;
924		}
925
926	+	/**
927	+	* Waits for the specified time (in milliseconds) for the thread
928	+	* to terminate (using {@link Thread#join(long)}), else interrupts
929	+	* the thread (in the hope that it may terminate later) and fails.
930	+	*/
931	+	void awaitTermination(Thread t, long timeoutMillis) {
932	+	try {
933	+	t.join(timeoutMillis);
934	+	} catch (InterruptedException ie) {
935	+	threadUnexpectedException(ie);
936	+	} finally {
937	+	if (t.getState() != Thread.State.TERMINATED) {
938	+	t.interrupt();
939	+	fail("Test timed out");
940	+	}
941	+	}
942	+	}
943	+
944	+	/**
945	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
946	+	* terminate (using {@link Thread#join(long)}), else interrupts
947	+	* the thread (in the hope that it may terminate later) and fails.
948	+	*/
949	+	void awaitTermination(Thread t) {
950	+	awaitTermination(t, LONG_DELAY_MS);
951	+	}
952	+
953		// Some convenient Runnable classes
954
955		public abstract class CheckedRunnable implements Runnable {
#	Line 616 | Line 1012 | public class JSR166TestCase extends Test
1012		realRun();
1013		threadShouldThrow("InterruptedException");
1014		} catch (InterruptedException success) {
1015	+	threadAssertFalse(Thread.interrupted());
1016		} catch (Throwable t) {
1017		threadUnexpectedException(t);
1018		}
#	Line 645 | Line 1042 | public class JSR166TestCase extends Test
1042		threadShouldThrow("InterruptedException");
1043		return result;
1044		} catch (InterruptedException success) {
1045	+	threadAssertFalse(Thread.interrupted());
1046		} catch (Throwable t) {
1047		threadUnexpectedException(t);
1048		}
#	Line 668 | Line 1066 | public class JSR166TestCase extends Test
1066
1067		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1068		return new CheckedCallable<String>() {
1069	<	public String realCall() {
1069	>	protected String realCall() {
1070		try {
1071		latch.await();
1072		} catch (InterruptedException quittingTime) {}
#	Line 676 | Line 1074 | public class JSR166TestCase extends Test
1074		}};
1075		}
1076
1077	+	public Runnable awaiter(final CountDownLatch latch) {
1078	+	return new CheckedRunnable() {
1079	+	public void realRun() throws InterruptedException {
1080	+	await(latch);
1081	+	}};
1082	+	}
1083	+
1084	+	public void await(CountDownLatch latch) {
1085	+	try {
1086	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1087	+	} catch (Throwable t) {
1088	+	threadUnexpectedException(t);
1089	+	}
1090	+	}
1091	+
1092	+	public void await(Semaphore semaphore) {
1093	+	try {
1094	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1095	+	} catch (Throwable t) {
1096	+	threadUnexpectedException(t);
1097	+	}
1098	+	}
1099	+
1100	+	//     /**
1101	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1102	+	//      */
1103	+	//     public void await(AtomicBoolean flag) {
1104	+	//         await(flag, LONG_DELAY_MS);
1105	+	//     }
1106	+
1107	+	//     /**
1108	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1109	+	//      */
1110	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1111	+	//         long startTime = System.nanoTime();
1112	+	//         while (!flag.get()) {
1113	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1114	+	//                 throw new AssertionFailedError("timed out");
1115	+	//             Thread.yield();
1116	+	//         }
1117	+	//     }
1118	+
1119		public static class NPETask implements Callable<String> {
1120		public String call() { throw new NullPointerException(); }
1121		}
#	Line 686 | Line 1126 | public class JSR166TestCase extends Test
1126
1127		public class ShortRunnable extends CheckedRunnable {
1128		protected void realRun() throws Throwable {
1129	<	Thread.sleep(SHORT_DELAY_MS);
1129	>	delay(SHORT_DELAY_MS);
1130		}
1131		}
1132
1133		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1134		protected void realRun() throws InterruptedException {
1135	<	Thread.sleep(SHORT_DELAY_MS);
1135	>	delay(SHORT_DELAY_MS);
1136		}
1137		}
1138
1139		public class SmallRunnable extends CheckedRunnable {
1140		protected void realRun() throws Throwable {
1141	<	Thread.sleep(SMALL_DELAY_MS);
1141	>	delay(SMALL_DELAY_MS);
1142		}
1143		}
1144
1145		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1146		protected void realRun() {
1147		try {
1148	<	Thread.sleep(SMALL_DELAY_MS);
1148	>	delay(SMALL_DELAY_MS);
1149		} catch (InterruptedException ok) {}
1150		}
1151		}
1152
1153		public class SmallCallable extends CheckedCallable {
1154		protected Object realCall() throws InterruptedException {
1155	<	Thread.sleep(SMALL_DELAY_MS);
1155	>	delay(SMALL_DELAY_MS);
1156		return Boolean.TRUE;
1157		}
1158		}
1159
720	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
721	–	protected void realRun() throws InterruptedException {
722	–	Thread.sleep(SMALL_DELAY_MS);
723	–	}
724	–	}
725	–
1160		public class MediumRunnable extends CheckedRunnable {
1161		protected void realRun() throws Throwable {
1162	<	Thread.sleep(MEDIUM_DELAY_MS);
1162	>	delay(MEDIUM_DELAY_MS);
1163		}
1164		}
1165
1166		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1167		protected void realRun() throws InterruptedException {
1168	<	Thread.sleep(MEDIUM_DELAY_MS);
1168	>	delay(MEDIUM_DELAY_MS);
1169		}
1170		}
1171
1172	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1173	+	return new CheckedRunnable() {
1174	+	protected void realRun() {
1175	+	try {
1176	+	delay(timeoutMillis);
1177	+	} catch (InterruptedException ok) {}
1178	+	}};
1179	+	}
1180	+
1181		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1182		protected void realRun() {
1183		try {
1184	<	Thread.sleep(MEDIUM_DELAY_MS);
1184	>	delay(MEDIUM_DELAY_MS);
1185		} catch (InterruptedException ok) {}
1186		}
1187		}
#	Line 746 | Line 1189 | public class JSR166TestCase extends Test
1189		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1190		protected void realRun() {
1191		try {
1192	<	Thread.sleep(LONG_DELAY_MS);
1192	>	delay(LONG_DELAY_MS);
1193		} catch (InterruptedException ok) {}
1194		}
1195		}
#	Line 760 | Line 1203 | public class JSR166TestCase extends Test
1203		}
1204		}
1205
1206	+	public interface TrackedRunnable extends Runnable {
1207	+	boolean isDone();
1208	+	}
1209	+
1210	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1211	+	return new TrackedRunnable() {
1212	+	private volatile boolean done = false;
1213	+	public boolean isDone() { return done; }
1214	+	public void run() {
1215	+	try {
1216	+	delay(timeoutMillis);
1217	+	done = true;
1218	+	} catch (InterruptedException ok) {}
1219	+	}
1220	+	};
1221	+	}
1222	+
1223		public static class TrackedShortRunnable implements Runnable {
1224		public volatile boolean done = false;
1225		public void run() {
1226		try {
1227	<	Thread.sleep(SMALL_DELAY_MS);
1227	>	delay(SHORT_DELAY_MS);
1228	>	done = true;
1229	>	} catch (InterruptedException ok) {}
1230	>	}
1231	>	}
1232	>
1233	>	public static class TrackedSmallRunnable implements Runnable {
1234	>	public volatile boolean done = false;
1235	>	public void run() {
1236	>	try {
1237	>	delay(SMALL_DELAY_MS);
1238		done = true;
1239		} catch (InterruptedException ok) {}
1240		}
#	Line 774 | Line 1244 | public class JSR166TestCase extends Test
1244		public volatile boolean done = false;
1245		public void run() {
1246		try {
1247	<	Thread.sleep(MEDIUM_DELAY_MS);
1247	>	delay(MEDIUM_DELAY_MS);
1248		done = true;
1249		} catch (InterruptedException ok) {}
1250		}
#	Line 784 | Line 1254 | public class JSR166TestCase extends Test
1254		public volatile boolean done = false;
1255		public void run() {
1256		try {
1257	<	Thread.sleep(LONG_DELAY_MS);
1257	>	delay(LONG_DELAY_MS);
1258		done = true;
1259		} catch (InterruptedException ok) {}
1260		}
#	Line 801 | Line 1271 | public class JSR166TestCase extends Test
1271		public volatile boolean done = false;
1272		public Object call() {
1273		try {
1274	<	Thread.sleep(SMALL_DELAY_MS);
1274	>	delay(SMALL_DELAY_MS);
1275		done = true;
1276		} catch (InterruptedException ok) {}
1277		return Boolean.TRUE;
#	Line 814 | Line 1284 | public class JSR166TestCase extends Test
1284		public abstract class CheckedRecursiveAction extends RecursiveAction {
1285		protected abstract void realCompute() throws Throwable;
1286
1287	<	public final void compute() {
1287	>	@Override protected final void compute() {
1288		try {
1289		realCompute();
1290		} catch (Throwable t) {
#	Line 829 | Line 1299 | public class JSR166TestCase extends Test
1299		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1300		protected abstract T realCompute() throws Throwable;
1301
1302	<	public final T compute() {
1302	>	@Override protected final T compute() {
1303		try {
1304		return realCompute();
1305		} catch (Throwable t) {
#	Line 847 | Line 1317 | public class JSR166TestCase extends Test
1317		ThreadPoolExecutor executor) {}
1318		}
1319
1320	+	/**
1321	+	* A CyclicBarrier that uses timed await and fails with
1322	+	* AssertionFailedErrors instead of throwing checked exceptions.
1323	+	*/
1324	+	public class CheckedBarrier extends CyclicBarrier {
1325	+	public CheckedBarrier(int parties) { super(parties); }
1326	+
1327	+	public int await() {
1328	+	try {
1329	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1330	+	} catch (TimeoutException e) {
1331	+	throw new AssertionFailedError("timed out");
1332	+	} catch (Exception e) {
1333	+	AssertionFailedError afe =
1334	+	new AssertionFailedError("Unexpected exception: " + e);
1335	+	afe.initCause(e);
1336	+	throw afe;
1337	+	}
1338	+	}
1339	+	}
1340	+
1341	+	void checkEmpty(BlockingQueue q) {
1342	+	try {
1343	+	assertTrue(q.isEmpty());
1344	+	assertEquals(0, q.size());
1345	+	assertNull(q.peek());
1346	+	assertNull(q.poll());
1347	+	assertNull(q.poll(0, MILLISECONDS));
1348	+	assertEquals(q.toString(), "[]");
1349	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1350	+	assertFalse(q.iterator().hasNext());
1351	+	try {
1352	+	q.element();
1353	+	shouldThrow();
1354	+	} catch (NoSuchElementException success) {}
1355	+	try {
1356	+	q.iterator().next();
1357	+	shouldThrow();
1358	+	} catch (NoSuchElementException success) {}
1359	+	try {
1360	+	q.remove();
1361	+	shouldThrow();
1362	+	} catch (NoSuchElementException success) {}
1363	+	} catch (InterruptedException ie) {
1364	+	threadUnexpectedException(ie);
1365	+	}
1366	+	}
1367	+
1368	+	void assertSerialEquals(Object x, Object y) {
1369	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1370	+	}
1371	+
1372	+	void assertNotSerialEquals(Object x, Object y) {
1373	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1374	+	}
1375	+
1376	+	byte[] serialBytes(Object o) {
1377	+	try {
1378	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1379	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1380	+	oos.writeObject(o);
1381	+	oos.flush();
1382	+	oos.close();
1383	+	return bos.toByteArray();
1384	+	} catch (Throwable t) {
1385	+	threadUnexpectedException(t);
1386	+	return new byte[0];
1387	+	}
1388	+	}
1389	+
1390	+	@SuppressWarnings("unchecked")
1391	+	<T> T serialClone(T o) {
1392	+	try {
1393	+	ObjectInputStream ois = new ObjectInputStream
1394	+	(new ByteArrayInputStream(serialBytes(o)));
1395	+	T clone = (T) ois.readObject();
1396	+	assertSame(o.getClass(), clone.getClass());
1397	+	return clone;
1398	+	} catch (Throwable t) {
1399	+	threadUnexpectedException(t);
1400	+	return null;
1401	+	}
1402	+	}
1403	+
1404	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1405	+	Runnable... throwingActions) {
1406	+	for (Runnable throwingAction : throwingActions) {
1407	+	boolean threw = false;
1408	+	try { throwingAction.run(); }
1409	+	catch (Throwable t) {
1410	+	threw = true;
1411	+	if (!expectedExceptionClass.isInstance(t)) {
1412	+	AssertionFailedError afe =
1413	+	new AssertionFailedError
1414	+	("Expected " + expectedExceptionClass.getName() +
1415	+	", got " + t.getClass().getName());
1416	+	afe.initCause(t);
1417	+	threadUnexpectedException(afe);
1418	+	}
1419	+	}
1420	+	if (!threw)
1421	+	shouldThrow(expectedExceptionClass.getName());
1422	+	}
1423	+	}
1424		}

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