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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 1.118 by jsr166, Mon Jun 16 18:01:38 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	+	protected static final boolean testImplementationDetails =
119	+	Boolean.getBoolean("jsr166.testImplementationDetails");
120	+
121	+	/**
122	+	* If true, report on stdout all "slow" tests, that is, ones that
123	+	* take more than profileThreshold milliseconds to execute.
124	+	*/
125	+	private static final boolean profileTests =
126	+	Boolean.getBoolean("jsr166.profileTests");
127	+
128	+	/**
129	+	* The number of milliseconds that tests are permitted for
130	+	* execution without being reported, when profileTests is set.
131	+	*/
132	+	private static final long profileThreshold =
133	+	Long.getLong("jsr166.profileThreshold", 100);
134	+
135	+	/**
136	+	* The number of repetitions per test (for tickling rare bugs).
137	+	*/
138	+	private static final int runsPerTest =
139	+	Integer.getInteger("jsr166.runsPerTest", 1);
140	+
141	+	/**
142	+	* A filter for tests to run, matching strings of the form
143	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
144	+	* Usefully combined with jsr166.runsPerTest.
145	+	*/
146	+	private static final Pattern methodFilter = methodFilter();
147	+
148	+	private static Pattern methodFilter() {
149	+	String regex = System.getProperty("jsr166.methodFilter");
150	+	return (regex == null) ? null : Pattern.compile(regex);
151	+	}
152	+
153	+	protected void runTest() throws Throwable {
154	+	if (methodFilter == null
155	+	|| methodFilter.matcher(toString()).find()) {
156	+	for (int i = 0; i < runsPerTest; i++) {
157	+	if (profileTests)
158	+	runTestProfiled();
159	+	else
160	+	super.runTest();
161	+	}
162	+	}
163	+	}
164	+
165	+	protected void runTestProfiled() throws Throwable {
166	+	// Warmup run, notably to trigger all needed classloading.
167	+	super.runTest();
168	+	long t0 = System.nanoTime();
169	+	try {
170	+	super.runTest();
171	+	} finally {
172	+	long elapsedMillis = millisElapsedSince(t0);
173	+	if (elapsedMillis >= profileThreshold)
174	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
175	+	}
176	+	}
177	+
178		/**
179	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
179	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
180	>	* Optional command line arg provides the number of iterations to
181	>	* repeat running the tests.
182		*/
183		public static void main(String[] args) {
184		if (useSecurityManager) {
#	Line 105 | Line 186 | public class JSR166TestCase extends Test
186		Policy.setPolicy(permissivePolicy());
187		System.setSecurityManager(new SecurityManager());
188		}
189	<	int iters = 1;
190	<	if (args.length > 0)
110	<	iters = Integer.parseInt(args[0]);
189	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
190	>
191		Test s = suite();
192		for (int i = 0; i < iters; ++i) {
193		junit.textui.TestRunner.run(s);
#	Line 117 | Line 197 | public class JSR166TestCase extends Test
197		System.exit(0);
198		}
199
200	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
201	+	TestSuite suite = new TestSuite();
202	+	for (Object suiteOrClass : suiteOrClasses) {
203	+	if (suiteOrClass instanceof TestSuite)
204	+	suite.addTest((TestSuite) suiteOrClass);
205	+	else if (suiteOrClass instanceof Class)
206	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
207	+	else
208	+	throw new ClassCastException("not a test suite or class");
209	+	}
210	+	return suite;
211	+	}
212	+
213	+	public static void addNamedTestClasses(TestSuite suite,
214	+	String... testClassNames) {
215	+	for (String testClassName : testClassNames) {
216	+	try {
217	+	Class<?> testClass = Class.forName(testClassName);
218	+	Method m = testClass.getDeclaredMethod("suite",
219	+	new Class<?>[0]);
220	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
221	+	} catch (Exception e) {
222	+	throw new Error("Missing test class", e);
223	+	}
224	+	}
225	+	}
226	+
227	+	public static final double JAVA_CLASS_VERSION;
228	+	public static final String JAVA_SPECIFICATION_VERSION;
229	+	static {
230	+	try {
231	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
232	+	new java.security.PrivilegedAction<Double>() {
233	+	public Double run() {
234	+	return Double.valueOf(System.getProperty("java.class.version"));}});
235	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
236	+	new java.security.PrivilegedAction<String>() {
237	+	public String run() {
238	+	return System.getProperty("java.specification.version");}});
239	+	} catch (Throwable t) {
240	+	throw new Error(t);
241	+	}
242	+	}
243	+
244	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
245	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
246	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
247	+	public static boolean atLeastJava9() {
248	+	// As of 2014-05, java9 still uses 52.0 class file version
249	+	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
250	+	}
251	+
252		/**
253	<	* Collects all JSR166 unit tests as one suite
253	>	* Collects all JSR166 unit tests as one suite.
254		*/
255		public static Test suite() {
256	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
257	<
258	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
259	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
260	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
261	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
262	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
263	<	suite.addTest(new TestSuite(PhaserTest.class));
264	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
265	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
266	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
267	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
268	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
269	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
270	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
271	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
272	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
273	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
274	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
275	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
276	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
277	<	suite.addTest(new TestSuite(AtomicLongTest.class));
278	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
279	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
280	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
281	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
282	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
283	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
284	<	suite.addTest(new TestSuite(ConcurrentLinkedDequeTest.class));
285	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
286	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
287	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
288	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
289	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
290	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
291	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
292	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
293	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
294	<	suite.addTest(new TestSuite(DelayQueueTest.class));
295	<	suite.addTest(new TestSuite(EntryTest.class));
296	<	suite.addTest(new TestSuite(ExchangerTest.class));
297	<	suite.addTest(new TestSuite(ExecutorsTest.class));
298	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
299	<	suite.addTest(new TestSuite(FutureTaskTest.class));
300	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
301	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
302	<	suite.addTest(new TestSuite(LinkedListTest.class));
303	<	suite.addTest(new TestSuite(LockSupportTest.class));
304	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
305	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
306	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
307	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
308	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
309	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
310	<	suite.addTest(new TestSuite(SemaphoreTest.class));
311	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
312	<	suite.addTest(new TestSuite(SystemTest.class));
313	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
314	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
315	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
316	<	suite.addTest(new TestSuite(ThreadTest.class));
317	<	suite.addTest(new TestSuite(TimeUnitTest.class));
318	<	suite.addTest(new TestSuite(TreeMapTest.class));
319	<	suite.addTest(new TestSuite(TreeSetTest.class));
320	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
321	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
256	>	// Java7+ test classes
257	>	TestSuite suite = newTestSuite(
258	>	ForkJoinPoolTest.suite(),
259	>	ForkJoinTaskTest.suite(),
260	>	RecursiveActionTest.suite(),
261	>	RecursiveTaskTest.suite(),
262	>	LinkedTransferQueueTest.suite(),
263	>	PhaserTest.suite(),
264	>	ThreadLocalRandomTest.suite(),
265	>	AbstractExecutorServiceTest.suite(),
266	>	AbstractQueueTest.suite(),
267	>	AbstractQueuedSynchronizerTest.suite(),
268	>	AbstractQueuedLongSynchronizerTest.suite(),
269	>	ArrayBlockingQueueTest.suite(),
270	>	ArrayDequeTest.suite(),
271	>	AtomicBooleanTest.suite(),
272	>	AtomicIntegerArrayTest.suite(),
273	>	AtomicIntegerFieldUpdaterTest.suite(),
274	>	AtomicIntegerTest.suite(),
275	>	AtomicLongArrayTest.suite(),
276	>	AtomicLongFieldUpdaterTest.suite(),
277	>	AtomicLongTest.suite(),
278	>	AtomicMarkableReferenceTest.suite(),
279	>	AtomicReferenceArrayTest.suite(),
280	>	AtomicReferenceFieldUpdaterTest.suite(),
281	>	AtomicReferenceTest.suite(),
282	>	AtomicStampedReferenceTest.suite(),
283	>	ConcurrentHashMapTest.suite(),
284	>	ConcurrentLinkedDequeTest.suite(),
285	>	ConcurrentLinkedQueueTest.suite(),
286	>	ConcurrentSkipListMapTest.suite(),
287	>	ConcurrentSkipListSubMapTest.suite(),
288	>	ConcurrentSkipListSetTest.suite(),
289	>	ConcurrentSkipListSubSetTest.suite(),
290	>	CopyOnWriteArrayListTest.suite(),
291	>	CopyOnWriteArraySetTest.suite(),
292	>	CountDownLatchTest.suite(),
293	>	CyclicBarrierTest.suite(),
294	>	DelayQueueTest.suite(),
295	>	EntryTest.suite(),
296	>	ExchangerTest.suite(),
297	>	ExecutorsTest.suite(),
298	>	ExecutorCompletionServiceTest.suite(),
299	>	FutureTaskTest.suite(),
300	>	LinkedBlockingDequeTest.suite(),
301	>	LinkedBlockingQueueTest.suite(),
302	>	LinkedListTest.suite(),
303	>	LockSupportTest.suite(),
304	>	PriorityBlockingQueueTest.suite(),
305	>	PriorityQueueTest.suite(),
306	>	ReentrantLockTest.suite(),
307	>	ReentrantReadWriteLockTest.suite(),
308	>	ScheduledExecutorTest.suite(),
309	>	ScheduledExecutorSubclassTest.suite(),
310	>	SemaphoreTest.suite(),
311	>	SynchronousQueueTest.suite(),
312	>	SystemTest.suite(),
313	>	ThreadLocalTest.suite(),
314	>	ThreadPoolExecutorTest.suite(),
315	>	ThreadPoolExecutorSubclassTest.suite(),
316	>	ThreadTest.suite(),
317	>	TimeUnitTest.suite(),
318	>	TreeMapTest.suite(),
319	>	TreeSetTest.suite(),
320	>	TreeSubMapTest.suite(),
321	>	TreeSubSetTest.suite());
322	>
323	>	// Java8+ test classes
324	>	if (atLeastJava8()) {
325	>	String[] java8TestClassNames = {
326	>	"Atomic8Test",
327	>	"CompletableFutureTest",
328	>	"ConcurrentHashMap8Test",
329	>	"CountedCompleterTest",
330	>	"DoubleAccumulatorTest",
331	>	"DoubleAdderTest",
332	>	"ForkJoinPool8Test",
333	>	"ForkJoinTask8Test",
334	>	"LongAccumulatorTest",
335	>	"LongAdderTest",
336	>	"SplittableRandomTest",
337	>	"StampedLockTest",
338	>	"ThreadLocalRandom8Test",
339	>	};
340	>	addNamedTestClasses(suite, java8TestClassNames);
341	>	}
342	>
343	>	// Java9+ test classes
344	>	if (atLeastJava9()) {
345	>	String[] java9TestClassNames = {
346	>	"ThreadPoolExecutor9Test",
347	>	};
348	>	addNamedTestClasses(suite, java9TestClassNames);
349	>	}
350
351		return suite;
352		}
353
354	+	// Delays for timing-dependent tests, in milliseconds.
355
356		public static long SHORT_DELAY_MS;
357		public static long SMALL_DELAY_MS;
358		public static long MEDIUM_DELAY_MS;
359		public static long LONG_DELAY_MS;
360
200	–
361		/**
362		* Returns the shortest timed delay. This could
363		* be reimplemented to use for example a Property.
#	Line 206 | Line 366 | public class JSR166TestCase extends Test
366		return 50;
367		}
368
209	–
369		/**
370		* Sets delays as multiples of SHORT_DELAY.
371		*/
#	Line 214 | Line 373 | public class JSR166TestCase extends Test
373		SHORT_DELAY_MS = getShortDelay();
374		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
375		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
376	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
376	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
377	>	}
378	>
379	>	/**
380	>	* Returns a timeout in milliseconds to be used in tests that
381	>	* verify that operations block or time out.
382	>	*/
383	>	long timeoutMillis() {
384	>	return SHORT_DELAY_MS / 4;
385	>	}
386	>
387	>	/**
388	>	* Returns a new Date instance representing a time delayMillis
389	>	* milliseconds in the future.
390	>	*/
391	>	Date delayedDate(long delayMillis) {
392	>	return new Date(System.currentTimeMillis() + delayMillis);
393		}
394
395		/**
#	Line 238 | Line 413 | public class JSR166TestCase extends Test
413		}
414
415		/**
416	+	* Extra checks that get done for all test cases.
417	+	*
418		* Triggers test case failure if any thread assertions have failed,
419		* by rethrowing, in the test harness thread, any exception recorded
420		* earlier by threadRecordFailure.
421	+	*
422	+	* Triggers test case failure if interrupt status is set in the main thread.
423		*/
424		public void tearDown() throws Exception {
425	<	Throwable t = threadFailure.get();
425	>	Throwable t = threadFailure.getAndSet(null);
426		if (t != null) {
427		if (t instanceof Error)
428		throw (Error) t;
#	Line 251 | Line 430 | public class JSR166TestCase extends Test
430		throw (RuntimeException) t;
431		else if (t instanceof Exception)
432		throw (Exception) t;
433	<	else
434	<	throw new AssertionError(t);
433	>	else {
434	>	AssertionFailedError afe =
435	>	new AssertionFailedError(t.toString());
436	>	afe.initCause(t);
437	>	throw afe;
438	>	}
439	>	}
440	>
441	>	if (Thread.interrupted())
442	>	throw new AssertionFailedError("interrupt status set in main thread");
443	>
444	>	checkForkJoinPoolThreadLeaks();
445	>	}
446	>
447	>	/**
448	>	* Find missing try { ... } finally { joinPool(e); }
449	>	*/
450	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
451	>	Thread[] survivors = new Thread[5];
452	>	int count = Thread.enumerate(survivors);
453	>	for (int i = 0; i < count; i++) {
454	>	Thread thread = survivors[i];
455	>	String name = thread.getName();
456	>	if (name.startsWith("ForkJoinPool-")) {
457	>	// give thread some time to terminate
458	>	thread.join(LONG_DELAY_MS);
459	>	if (!thread.isAlive()) continue;
460	>	thread.stop();
461	>	throw new AssertionFailedError
462	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
463	>	toString(), name));
464	>	}
465		}
466		}
467
468		/**
469		* Just like fail(reason), but additionally recording (using
470	<	* threadRecordFailure) any AssertionError thrown, so that the current
471	<	* testcase will fail.
470	>	* threadRecordFailure) any AssertionFailedError thrown, so that
471	>	* the current testcase will fail.
472		*/
473		public void threadFail(String reason) {
474		try {
475		fail(reason);
476	<	} catch (Throwable t) {
476	>	} catch (AssertionFailedError t) {
477		threadRecordFailure(t);
478		fail(reason);
479		}
#	Line 272 | Line 481 | public class JSR166TestCase extends Test
481
482		/**
483		* Just like assertTrue(b), but additionally recording (using
484	<	* threadRecordFailure) any AssertionError thrown, so that the current
485	<	* testcase will fail.
484	>	* threadRecordFailure) any AssertionFailedError thrown, so that
485	>	* the current testcase will fail.
486		*/
487		public void threadAssertTrue(boolean b) {
488		try {
489		assertTrue(b);
490	<	} catch (AssertionError t) {
490	>	} catch (AssertionFailedError t) {
491		threadRecordFailure(t);
492		throw t;
493		}
#	Line 286 | Line 495 | public class JSR166TestCase extends Test
495
496		/**
497		* Just like assertFalse(b), but additionally recording (using
498	<	* threadRecordFailure) any AssertionError thrown, so that the
499	<	* current testcase will fail.
498	>	* threadRecordFailure) any AssertionFailedError thrown, so that
499	>	* the current testcase will fail.
500		*/
501		public void threadAssertFalse(boolean b) {
502		try {
503		assertFalse(b);
504	<	} catch (AssertionError t) {
504	>	} catch (AssertionFailedError t) {
505		threadRecordFailure(t);
506		throw t;
507		}
#	Line 300 | Line 509 | public class JSR166TestCase extends Test
509
510		/**
511		* Just like assertNull(x), but additionally recording (using
512	<	* threadRecordFailure) any AssertionError thrown, so that the
513	<	* current testcase will fail.
512	>	* threadRecordFailure) any AssertionFailedError thrown, so that
513	>	* the current testcase will fail.
514		*/
515		public void threadAssertNull(Object x) {
516		try {
517		assertNull(x);
518	<	} catch (AssertionError t) {
518	>	} catch (AssertionFailedError t) {
519		threadRecordFailure(t);
520		throw t;
521		}
#	Line 314 | Line 523 | public class JSR166TestCase extends Test
523
524		/**
525		* Just like assertEquals(x, y), but additionally recording (using
526	<	* threadRecordFailure) any AssertionError thrown, so that the
527	<	* current testcase will fail.
526	>	* threadRecordFailure) any AssertionFailedError thrown, so that
527	>	* the current testcase will fail.
528		*/
529		public void threadAssertEquals(long x, long y) {
530		try {
531		assertEquals(x, y);
532	<	} catch (AssertionError t) {
532	>	} catch (AssertionFailedError t) {
533		threadRecordFailure(t);
534		throw t;
535		}
#	Line 328 | Line 537 | public class JSR166TestCase extends Test
537
538		/**
539		* Just like assertEquals(x, y), but additionally recording (using
540	<	* threadRecordFailure) any AssertionError thrown, so that the
541	<	* current testcase will fail.
540	>	* threadRecordFailure) any AssertionFailedError thrown, so that
541	>	* the current testcase will fail.
542		*/
543		public void threadAssertEquals(Object x, Object y) {
544		try {
545		assertEquals(x, y);
546	<	} catch (AssertionError t) {
546	>	} catch (AssertionFailedError t) {
547		threadRecordFailure(t);
548		throw t;
549	+	} catch (Throwable t) {
550	+	threadUnexpectedException(t);
551		}
552		}
553
554		/**
555		* Just like assertSame(x, y), but additionally recording (using
556	<	* threadRecordFailure) any AssertionError thrown, so that the
557	<	* current testcase will fail.
556	>	* threadRecordFailure) any AssertionFailedError thrown, so that
557	>	* the current testcase will fail.
558		*/
559		public void threadAssertSame(Object x, Object y) {
560		try {
561		assertSame(x, y);
562	<	} catch (AssertionError t) {
562	>	} catch (AssertionFailedError t) {
563		threadRecordFailure(t);
564		throw t;
565		}
#	Line 369 | Line 580 | public class JSR166TestCase extends Test
580		}
581
582		/**
583	<	* Calls threadFail with message "Unexpected exception" + ex.
583	>	* Records the given exception using {@link #threadRecordFailure},
584	>	* then rethrows the exception, wrapping it in an
585	>	* AssertionFailedError if necessary.
586		*/
587		public void threadUnexpectedException(Throwable t) {
588		threadRecordFailure(t);
589		t.printStackTrace();
377	–	// Rethrow, wrapping in an AssertionError if necessary
590		if (t instanceof RuntimeException)
591		throw (RuntimeException) t;
592		else if (t instanceof Error)
593		throw (Error) t;
594		else {
595	<	AssertionError ae = new AssertionError("unexpected exception: " + t);
596	<	t.initCause(t);
597	<	throw ae;
595	>	AssertionFailedError afe =
596	>	new AssertionFailedError("unexpected exception: " + t);
597	>	afe.initCause(t);
598	>	throw afe;
599	>	}
600	>	}
601	>
602	>	/**
603	>	* Delays, via Thread.sleep, for the given millisecond delay, but
604	>	* if the sleep is shorter than specified, may re-sleep or yield
605	>	* until time elapses.
606	>	*/
607	>	static void delay(long millis) throws InterruptedException {
608	>	long startTime = System.nanoTime();
609	>	long ns = millis * 1000 * 1000;
610	>	for (;;) {
611	>	if (millis > 0L)
612	>	Thread.sleep(millis);
613	>	else // too short to sleep
614	>	Thread.yield();
615	>	long d = ns - (System.nanoTime() - startTime);
616	>	if (d > 0L)
617	>	millis = d / (1000 * 1000);
618	>	else
619	>	break;
620		}
621		}
622
623		/**
624		* Waits out termination of a thread pool or fails doing so.
625		*/
626	<	public void joinPool(ExecutorService exec) {
626	>	void joinPool(ExecutorService exec) {
627		try {
628		exec.shutdown();
629		assertTrue("ExecutorService did not terminate in a timely manner",
630	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
630	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
631		} catch (SecurityException ok) {
632		// Allowed in case test doesn't have privs
633		} catch (InterruptedException ie) {
#	Line 401 | Line 635 | public class JSR166TestCase extends Test
635		}
636		}
637
638	+	/**
639	+	* A debugging tool to print all stack traces, as jstack does.
640	+	*/
641	+	static void printAllStackTraces() {
642	+	for (ThreadInfo info :
643	+	ManagementFactory.getThreadMXBean()
644	+	.dumpAllThreads(true, true))
645	+	System.err.print(info);
646	+	}
647	+
648	+	/**
649	+	* Checks that thread does not terminate within the default
650	+	* millisecond delay of {@code timeoutMillis()}.
651	+	*/
652	+	void assertThreadStaysAlive(Thread thread) {
653	+	assertThreadStaysAlive(thread, timeoutMillis());
654	+	}
655	+
656	+	/**
657	+	* Checks that thread does not terminate within the given millisecond delay.
658	+	*/
659	+	void assertThreadStaysAlive(Thread thread, long millis) {
660	+	try {
661	+	// No need to optimize the failing case via Thread.join.
662	+	delay(millis);
663	+	assertTrue(thread.isAlive());
664	+	} catch (InterruptedException ie) {
665	+	fail("Unexpected InterruptedException");
666	+	}
667	+	}
668	+
669	+	/**
670	+	* Checks that the threads do not terminate within the default
671	+	* millisecond delay of {@code timeoutMillis()}.
672	+	*/
673	+	void assertThreadsStayAlive(Thread... threads) {
674	+	assertThreadsStayAlive(timeoutMillis(), threads);
675	+	}
676	+
677	+	/**
678	+	* Checks that the threads do not terminate within the given millisecond delay.
679	+	*/
680	+	void assertThreadsStayAlive(long millis, Thread... threads) {
681	+	try {
682	+	// No need to optimize the failing case via Thread.join.
683	+	delay(millis);
684	+	for (Thread thread : threads)
685	+	assertTrue(thread.isAlive());
686	+	} catch (InterruptedException ie) {
687	+	fail("Unexpected InterruptedException");
688	+	}
689	+	}
690	+
691	+	/**
692	+	* Checks that future.get times out, with the default timeout of
693	+	* {@code timeoutMillis()}.
694	+	*/
695	+	void assertFutureTimesOut(Future future) {
696	+	assertFutureTimesOut(future, timeoutMillis());
697	+	}
698	+
699	+	/**
700	+	* Checks that future.get times out, with the given millisecond timeout.
701	+	*/
702	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
703	+	long startTime = System.nanoTime();
704	+	try {
705	+	future.get(timeoutMillis, MILLISECONDS);
706	+	shouldThrow();
707	+	} catch (TimeoutException success) {
708	+	} catch (Exception e) {
709	+	threadUnexpectedException(e);
710	+	} finally { future.cancel(true); }
711	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
712	+	}
713
714		/**
715		* Fails with message "should throw exception".
#	Line 417 | Line 726 | public class JSR166TestCase extends Test
726		}
727
728		/**
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	–	/**
729		* The number of elements to place in collections, arrays, etc.
730		*/
731		public static final int SIZE = 20;
#	Line 450 | Line 750 | public class JSR166TestCase extends Test
750		public static final Integer m6  = new Integer(-6);
751		public static final Integer m10 = new Integer(-10);
752
453	–
753		/**
754		* Runs Runnable r with a security policy that permits precisely
755		* the specified permissions.  If there is no current security
#	Line 462 | Line 761 | public class JSR166TestCase extends Test
761		SecurityManager sm = System.getSecurityManager();
762		if (sm == null) {
763		r.run();
764	+	}
765	+	runWithSecurityManagerWithPermissions(r, permissions);
766	+	}
767	+
768	+	/**
769	+	* Runs Runnable r with a security policy that permits precisely
770	+	* the specified permissions.  If there is no current security
771	+	* manager, a temporary one is set for the duration of the
772	+	* Runnable.  We require that any security manager permit
773	+	* getPolicy/setPolicy.
774	+	*/
775	+	public void runWithSecurityManagerWithPermissions(Runnable r,
776	+	Permission... permissions) {
777	+	SecurityManager sm = System.getSecurityManager();
778	+	if (sm == null) {
779		Policy savedPolicy = Policy.getPolicy();
780		try {
781		Policy.setPolicy(permissivePolicy());
782		System.setSecurityManager(new SecurityManager());
783	<	runWithPermissions(r, permissions);
783	>	runWithSecurityManagerWithPermissions(r, permissions);
784		} finally {
785		System.setSecurityManager(null);
786		Policy.setPolicy(savedPolicy);
#	Line 514 | Line 828 | public class JSR166TestCase extends Test
828		return perms.implies(p);
829		}
830		public void refresh() {}
831	+	public String toString() {
832	+	List<Permission> ps = new ArrayList<Permission>();
833	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
834	+	ps.add(e.nextElement());
835	+	return "AdjustablePolicy with permissions " + ps;
836	+	}
837		}
838
839		/**
#	Line 536 | Line 856 | public class JSR166TestCase extends Test
856		}
857
858		/**
859	<	* Sleep until the timeout has elapsed, or interrupted.
860	<	* Does <em>NOT</em> throw InterruptedException.
859	>	* Sleeps until the given time has elapsed.
860	>	* Throws AssertionFailedError if interrupted.
861		*/
862	<	void sleepTillInterrupted(long timeoutMillis) {
862	>	void sleep(long millis) {
863		try {
864	<	Thread.sleep(timeoutMillis);
865	<	} catch (InterruptedException wakeup) {}
864	>	delay(millis);
865	>	} catch (InterruptedException ie) {
866	>	AssertionFailedError afe =
867	>	new AssertionFailedError("Unexpected InterruptedException");
868	>	afe.initCause(ie);
869	>	throw afe;
870	>	}
871	>	}
872	>
873	>	/**
874	>	* Spin-waits up to the specified number of milliseconds for the given
875	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
876	>	*/
877	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
878	>	long startTime = System.nanoTime();
879	>	for (;;) {
880	>	Thread.State s = thread.getState();
881	>	if (s == Thread.State.BLOCKED ||
882	>	s == Thread.State.WAITING ||
883	>	s == Thread.State.TIMED_WAITING)
884	>	return;
885	>	else if (s == Thread.State.TERMINATED)
886	>	fail("Unexpected thread termination");
887	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
888	>	threadAssertTrue(thread.isAlive());
889	>	return;
890	>	}
891	>	Thread.yield();
892	>	}
893		}
894
895		/**
896	<	* Returns a new started Thread running the given runnable.
896	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
897	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
898	>	*/
899	>	void waitForThreadToEnterWaitState(Thread thread) {
900	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
901	>	}
902	>
903	>	/**
904	>	* Returns the number of milliseconds since time given by
905	>	* startNanoTime, which must have been previously returned from a
906	>	* call to {@link System.nanoTime()}.
907	>	*/
908	>	static long millisElapsedSince(long startNanoTime) {
909	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
910	>	}
911	>
912	>	/**
913	>	* Returns a new started daemon Thread running the given runnable.
914		*/
915		Thread newStartedThread(Runnable runnable) {
916		Thread t = new Thread(runnable);
917	+	t.setDaemon(true);
918		t.start();
919		return t;
920		}
921
922	+	/**
923	+	* Waits for the specified time (in milliseconds) for the thread
924	+	* to terminate (using {@link Thread#join(long)}), else interrupts
925	+	* the thread (in the hope that it may terminate later) and fails.
926	+	*/
927	+	void awaitTermination(Thread t, long timeoutMillis) {
928	+	try {
929	+	t.join(timeoutMillis);
930	+	} catch (InterruptedException ie) {
931	+	threadUnexpectedException(ie);
932	+	} finally {
933	+	if (t.getState() != Thread.State.TERMINATED) {
934	+	t.interrupt();
935	+	fail("Test timed out");
936	+	}
937	+	}
938	+	}
939	+
940	+	/**
941	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
942	+	* terminate (using {@link Thread#join(long)}), else interrupts
943	+	* the thread (in the hope that it may terminate later) and fails.
944	+	*/
945	+	void awaitTermination(Thread t) {
946	+	awaitTermination(t, LONG_DELAY_MS);
947	+	}
948	+
949		// Some convenient Runnable classes
950
951		public abstract class CheckedRunnable implements Runnable {
#	Line 616 | Line 1008 | public class JSR166TestCase extends Test
1008		realRun();
1009		threadShouldThrow("InterruptedException");
1010		} catch (InterruptedException success) {
1011	+	threadAssertFalse(Thread.interrupted());
1012		} catch (Throwable t) {
1013		threadUnexpectedException(t);
1014		}
#	Line 645 | Line 1038 | public class JSR166TestCase extends Test
1038		threadShouldThrow("InterruptedException");
1039		return result;
1040		} catch (InterruptedException success) {
1041	+	threadAssertFalse(Thread.interrupted());
1042		} catch (Throwable t) {
1043		threadUnexpectedException(t);
1044		}
#	Line 668 | Line 1062 | public class JSR166TestCase extends Test
1062
1063		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1064		return new CheckedCallable<String>() {
1065	<	public String realCall() {
1065	>	protected String realCall() {
1066		try {
1067		latch.await();
1068		} catch (InterruptedException quittingTime) {}
#	Line 676 | Line 1070 | public class JSR166TestCase extends Test
1070		}};
1071		}
1072
1073	+	public Runnable awaiter(final CountDownLatch latch) {
1074	+	return new CheckedRunnable() {
1075	+	public void realRun() throws InterruptedException {
1076	+	await(latch);
1077	+	}};
1078	+	}
1079	+
1080	+	public void await(CountDownLatch latch) {
1081	+	try {
1082	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1083	+	} catch (Throwable t) {
1084	+	threadUnexpectedException(t);
1085	+	}
1086	+	}
1087	+
1088	+	public void await(Semaphore semaphore) {
1089	+	try {
1090	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1091	+	} catch (Throwable t) {
1092	+	threadUnexpectedException(t);
1093	+	}
1094	+	}
1095	+
1096	+	//     /**
1097	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1098	+	//      */
1099	+	//     public void await(AtomicBoolean flag) {
1100	+	//         await(flag, LONG_DELAY_MS);
1101	+	//     }
1102	+
1103	+	//     /**
1104	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1105	+	//      */
1106	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1107	+	//         long startTime = System.nanoTime();
1108	+	//         while (!flag.get()) {
1109	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1110	+	//                 throw new AssertionFailedError("timed out");
1111	+	//             Thread.yield();
1112	+	//         }
1113	+	//     }
1114	+
1115		public static class NPETask implements Callable<String> {
1116		public String call() { throw new NullPointerException(); }
1117		}
#	Line 686 | Line 1122 | public class JSR166TestCase extends Test
1122
1123		public class ShortRunnable extends CheckedRunnable {
1124		protected void realRun() throws Throwable {
1125	<	Thread.sleep(SHORT_DELAY_MS);
1125	>	delay(SHORT_DELAY_MS);
1126		}
1127		}
1128
1129		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1130		protected void realRun() throws InterruptedException {
1131	<	Thread.sleep(SHORT_DELAY_MS);
1131	>	delay(SHORT_DELAY_MS);
1132		}
1133		}
1134
1135		public class SmallRunnable extends CheckedRunnable {
1136		protected void realRun() throws Throwable {
1137	<	Thread.sleep(SMALL_DELAY_MS);
1137	>	delay(SMALL_DELAY_MS);
1138		}
1139		}
1140
1141		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1142		protected void realRun() {
1143		try {
1144	<	Thread.sleep(SMALL_DELAY_MS);
1144	>	delay(SMALL_DELAY_MS);
1145		} catch (InterruptedException ok) {}
1146		}
1147		}
1148
1149		public class SmallCallable extends CheckedCallable {
1150		protected Object realCall() throws InterruptedException {
1151	<	Thread.sleep(SMALL_DELAY_MS);
1151	>	delay(SMALL_DELAY_MS);
1152		return Boolean.TRUE;
1153		}
1154		}
1155
720	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
721	–	protected void realRun() throws InterruptedException {
722	–	Thread.sleep(SMALL_DELAY_MS);
723	–	}
724	–	}
725	–
1156		public class MediumRunnable extends CheckedRunnable {
1157		protected void realRun() throws Throwable {
1158	<	Thread.sleep(MEDIUM_DELAY_MS);
1158	>	delay(MEDIUM_DELAY_MS);
1159		}
1160		}
1161
1162		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1163		protected void realRun() throws InterruptedException {
1164	<	Thread.sleep(MEDIUM_DELAY_MS);
1164	>	delay(MEDIUM_DELAY_MS);
1165		}
1166		}
1167
1168	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1169	+	return new CheckedRunnable() {
1170	+	protected void realRun() {
1171	+	try {
1172	+	delay(timeoutMillis);
1173	+	} catch (InterruptedException ok) {}
1174	+	}};
1175	+	}
1176	+
1177		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1178		protected void realRun() {
1179		try {
1180	<	Thread.sleep(MEDIUM_DELAY_MS);
1180	>	delay(MEDIUM_DELAY_MS);
1181		} catch (InterruptedException ok) {}
1182		}
1183		}
#	Line 746 | Line 1185 | public class JSR166TestCase extends Test
1185		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1186		protected void realRun() {
1187		try {
1188	<	Thread.sleep(LONG_DELAY_MS);
1188	>	delay(LONG_DELAY_MS);
1189		} catch (InterruptedException ok) {}
1190		}
1191		}
#	Line 760 | Line 1199 | public class JSR166TestCase extends Test
1199		}
1200		}
1201
1202	+	public interface TrackedRunnable extends Runnable {
1203	+	boolean isDone();
1204	+	}
1205	+
1206	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1207	+	return new TrackedRunnable() {
1208	+	private volatile boolean done = false;
1209	+	public boolean isDone() { return done; }
1210	+	public void run() {
1211	+	try {
1212	+	delay(timeoutMillis);
1213	+	done = true;
1214	+	} catch (InterruptedException ok) {}
1215	+	}
1216	+	};
1217	+	}
1218	+
1219		public static class TrackedShortRunnable implements Runnable {
1220		public volatile boolean done = false;
1221		public void run() {
1222		try {
1223	<	Thread.sleep(SMALL_DELAY_MS);
1223	>	delay(SHORT_DELAY_MS);
1224	>	done = true;
1225	>	} catch (InterruptedException ok) {}
1226	>	}
1227	>	}
1228	>
1229	>	public static class TrackedSmallRunnable implements Runnable {
1230	>	public volatile boolean done = false;
1231	>	public void run() {
1232	>	try {
1233	>	delay(SMALL_DELAY_MS);
1234		done = true;
1235		} catch (InterruptedException ok) {}
1236		}
#	Line 774 | Line 1240 | public class JSR166TestCase extends Test
1240		public volatile boolean done = false;
1241		public void run() {
1242		try {
1243	<	Thread.sleep(MEDIUM_DELAY_MS);
1243	>	delay(MEDIUM_DELAY_MS);
1244		done = true;
1245		} catch (InterruptedException ok) {}
1246		}
#	Line 784 | Line 1250 | public class JSR166TestCase extends Test
1250		public volatile boolean done = false;
1251		public void run() {
1252		try {
1253	<	Thread.sleep(LONG_DELAY_MS);
1253	>	delay(LONG_DELAY_MS);
1254		done = true;
1255		} catch (InterruptedException ok) {}
1256		}
#	Line 801 | Line 1267 | public class JSR166TestCase extends Test
1267		public volatile boolean done = false;
1268		public Object call() {
1269		try {
1270	<	Thread.sleep(SMALL_DELAY_MS);
1270	>	delay(SMALL_DELAY_MS);
1271		done = true;
1272		} catch (InterruptedException ok) {}
1273		return Boolean.TRUE;
#	Line 814 | Line 1280 | public class JSR166TestCase extends Test
1280		public abstract class CheckedRecursiveAction extends RecursiveAction {
1281		protected abstract void realCompute() throws Throwable;
1282
1283	<	public final void compute() {
1283	>	@Override protected final void compute() {
1284		try {
1285		realCompute();
1286		} catch (Throwable t) {
#	Line 829 | Line 1295 | public class JSR166TestCase extends Test
1295		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1296		protected abstract T realCompute() throws Throwable;
1297
1298	<	public final T compute() {
1298	>	@Override protected final T compute() {
1299		try {
1300		return realCompute();
1301		} catch (Throwable t) {
#	Line 847 | Line 1313 | public class JSR166TestCase extends Test
1313		ThreadPoolExecutor executor) {}
1314		}
1315
1316	+	/**
1317	+	* A CyclicBarrier that uses timed await and fails with
1318	+	* AssertionFailedErrors instead of throwing checked exceptions.
1319	+	*/
1320	+	public class CheckedBarrier extends CyclicBarrier {
1321	+	public CheckedBarrier(int parties) { super(parties); }
1322	+
1323	+	public int await() {
1324	+	try {
1325	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1326	+	} catch (TimeoutException e) {
1327	+	throw new AssertionFailedError("timed out");
1328	+	} catch (Exception e) {
1329	+	AssertionFailedError afe =
1330	+	new AssertionFailedError("Unexpected exception: " + e);
1331	+	afe.initCause(e);
1332	+	throw afe;
1333	+	}
1334	+	}
1335	+	}
1336	+
1337	+	void checkEmpty(BlockingQueue q) {
1338	+	try {
1339	+	assertTrue(q.isEmpty());
1340	+	assertEquals(0, q.size());
1341	+	assertNull(q.peek());
1342	+	assertNull(q.poll());
1343	+	assertNull(q.poll(0, MILLISECONDS));
1344	+	assertEquals(q.toString(), "[]");
1345	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1346	+	assertFalse(q.iterator().hasNext());
1347	+	try {
1348	+	q.element();
1349	+	shouldThrow();
1350	+	} catch (NoSuchElementException success) {}
1351	+	try {
1352	+	q.iterator().next();
1353	+	shouldThrow();
1354	+	} catch (NoSuchElementException success) {}
1355	+	try {
1356	+	q.remove();
1357	+	shouldThrow();
1358	+	} catch (NoSuchElementException success) {}
1359	+	} catch (InterruptedException ie) {
1360	+	threadUnexpectedException(ie);
1361	+	}
1362	+	}
1363	+
1364	+	void assertSerialEquals(Object x, Object y) {
1365	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1366	+	}
1367	+
1368	+	void assertNotSerialEquals(Object x, Object y) {
1369	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1370	+	}
1371	+
1372	+	byte[] serialBytes(Object o) {
1373	+	try {
1374	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1375	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1376	+	oos.writeObject(o);
1377	+	oos.flush();
1378	+	oos.close();
1379	+	return bos.toByteArray();
1380	+	} catch (Throwable t) {
1381	+	threadUnexpectedException(t);
1382	+	return new byte[0];
1383	+	}
1384	+	}
1385	+
1386	+	@SuppressWarnings("unchecked")
1387	+	<T> T serialClone(T o) {
1388	+	try {
1389	+	ObjectInputStream ois = new ObjectInputStream
1390	+	(new ByteArrayInputStream(serialBytes(o)));
1391	+	T clone = (T) ois.readObject();
1392	+	assertSame(o.getClass(), clone.getClass());
1393	+	return clone;
1394	+	} catch (Throwable t) {
1395	+	threadUnexpectedException(t);
1396	+	return null;
1397	+	}
1398	+	}
1399	+
1400	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1401	+	Runnable... throwingActions) {
1402	+	for (Runnable throwingAction : throwingActions) {
1403	+	boolean threw = false;
1404	+	try { throwingAction.run(); }
1405	+	catch (Throwable t) {
1406	+	threw = true;
1407	+	if (!expectedExceptionClass.isInstance(t)) {
1408	+	AssertionFailedError afe =
1409	+	new AssertionFailedError
1410	+	("Expected " + expectedExceptionClass.getName() +
1411	+	", got " + t.getClass().getName());
1412	+	afe.initCause(t);
1413	+	threadUnexpectedException(afe);
1414	+	}
1415	+	}
1416	+	if (!threw)
1417	+	shouldThrow(expectedExceptionClass.getName());
1418	+	}
1419	+	}
1420		}

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