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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.53 by jsr166, Thu Sep 16 00:52:49 2010 UTC vs.
Revision 1.116 by jsr166, Sun Jun 8 00:15:50 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, report on stdout all "slow" tests, that is, ones that
120	+	* take more than profileThreshold milliseconds to execute.
121	+	*/
122	+	private static final boolean profileTests =
123	+	Boolean.getBoolean("jsr166.profileTests");
124	+
125	+	/**
126	+	* The number of milliseconds that tests are permitted for
127	+	* execution without being reported, when profileTests is set.
128	+	*/
129	+	private static final long profileThreshold =
130	+	Long.getLong("jsr166.profileThreshold", 100);
131	+
132	+	/**
133	+	* The number of repetitions per test (for tickling rare bugs).
134	+	*/
135	+	private static final int runsPerTest =
136	+	Integer.getInteger("jsr166.runsPerTest", 1);
137	+
138	+	/**
139	+	* A filter for tests to run, matching strings of the form
140	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
141	+	* Usefully combined with jsr166.runsPerTest.
142	+	*/
143	+	private static final Pattern methodFilter = methodFilter();
144	+
145	+	private static Pattern methodFilter() {
146	+	String regex = System.getProperty("jsr166.methodFilter");
147	+	return (regex == null) ? null : Pattern.compile(regex);
148	+	}
149	+
150	+	protected void runTest() throws Throwable {
151	+	if (methodFilter == null
152	+	|| methodFilter.matcher(toString()).find()) {
153	+	for (int i = 0; i < runsPerTest; i++) {
154	+	if (profileTests)
155	+	runTestProfiled();
156	+	else
157	+	super.runTest();
158	+	}
159	+	}
160	+	}
161	+
162	+	protected void runTestProfiled() throws Throwable {
163	+	// Warmup run, notably to trigger all needed classloading.
164	+	super.runTest();
165	+	long t0 = System.nanoTime();
166	+	try {
167	+	super.runTest();
168	+	} finally {
169	+	long elapsedMillis = millisElapsedSince(t0);
170	+	if (elapsedMillis >= profileThreshold)
171	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
172	+	}
173	+	}
174	+
175		/**
176	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
176	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
177	>	* Optional command line arg provides the number of iterations to
178	>	* repeat running the tests.
179		*/
180		public static void main(String[] args) {
181		if (useSecurityManager) {
#	Line 105 | Line 183 | public class JSR166TestCase extends Test
183		Policy.setPolicy(permissivePolicy());
184		System.setSecurityManager(new SecurityManager());
185		}
186	<	int iters = 1;
187	<	if (args.length > 0)
110	<	iters = Integer.parseInt(args[0]);
186	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
187	>
188		Test s = suite();
189		for (int i = 0; i < iters; ++i) {
190		junit.textui.TestRunner.run(s);
#	Line 117 | Line 194 | public class JSR166TestCase extends Test
194		System.exit(0);
195		}
196
197	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
198	+	TestSuite suite = new TestSuite();
199	+	for (Object suiteOrClass : suiteOrClasses) {
200	+	if (suiteOrClass instanceof TestSuite)
201	+	suite.addTest((TestSuite) suiteOrClass);
202	+	else if (suiteOrClass instanceof Class)
203	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
204	+	else
205	+	throw new ClassCastException("not a test suite or class");
206	+	}
207	+	return suite;
208	+	}
209	+
210	+	public static void addNamedTestClasses(TestSuite suite,
211	+	String... testClassNames) {
212	+	for (String testClassName : testClassNames) {
213	+	try {
214	+	Class<?> testClass = Class.forName(testClassName);
215	+	Method m = testClass.getDeclaredMethod("suite",
216	+	new Class<?>[0]);
217	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
218	+	} catch (Exception e) {
219	+	throw new Error("Missing test class", e);
220	+	}
221	+	}
222	+	}
223	+
224	+	public static final double JAVA_CLASS_VERSION;
225	+	public static final String JAVA_SPECIFICATION_VERSION;
226	+	static {
227	+	try {
228	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
229	+	new java.security.PrivilegedAction<Double>() {
230	+	public Double run() {
231	+	return Double.valueOf(System.getProperty("java.class.version"));}});
232	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
233	+	new java.security.PrivilegedAction<String>() {
234	+	public String run() {
235	+	return System.getProperty("java.specification.version");}});
236	+	} catch (Throwable t) {
237	+	throw new Error(t);
238	+	}
239	+	}
240	+
241	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
242	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
243	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
244	+	public static boolean atLeastJava9() {
245	+	// As of 2014-05, java9 still uses 52.0 class file version
246	+	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
247	+	}
248	+
249		/**
250	<	* Collects all JSR166 unit tests as one suite
250	>	* Collects all JSR166 unit tests as one suite.
251		*/
252		public static Test suite() {
253	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
254	<
255	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
256	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
257	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
258	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
259	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
260	<	suite.addTest(new TestSuite(PhaserTest.class));
261	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
262	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
263	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
264	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
265	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
266	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
267	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
268	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
269	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
270	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
271	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
272	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
273	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
274	<	suite.addTest(new TestSuite(AtomicLongTest.class));
275	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
276	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
277	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
278	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
279	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
280	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
281	<	suite.addTest(new TestSuite(ConcurrentLinkedDequeTest.class));
282	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
283	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
284	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
285	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
286	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
287	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
288	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
289	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
290	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
291	<	suite.addTest(new TestSuite(DelayQueueTest.class));
292	<	suite.addTest(new TestSuite(EntryTest.class));
293	<	suite.addTest(new TestSuite(ExchangerTest.class));
294	<	suite.addTest(new TestSuite(ExecutorsTest.class));
295	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
296	<	suite.addTest(new TestSuite(FutureTaskTest.class));
297	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
298	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
299	<	suite.addTest(new TestSuite(LinkedListTest.class));
300	<	suite.addTest(new TestSuite(LockSupportTest.class));
301	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
302	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
303	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
304	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
305	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
306	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
307	<	suite.addTest(new TestSuite(SemaphoreTest.class));
308	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
309	<	suite.addTest(new TestSuite(SystemTest.class));
310	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
311	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
312	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
313	<	suite.addTest(new TestSuite(ThreadTest.class));
314	<	suite.addTest(new TestSuite(TimeUnitTest.class));
315	<	suite.addTest(new TestSuite(TreeMapTest.class));
316	<	suite.addTest(new TestSuite(TreeSetTest.class));
317	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
318	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
253	>	// Java7+ test classes
254	>	TestSuite suite = newTestSuite(
255	>	ForkJoinPoolTest.suite(),
256	>	ForkJoinTaskTest.suite(),
257	>	RecursiveActionTest.suite(),
258	>	RecursiveTaskTest.suite(),
259	>	LinkedTransferQueueTest.suite(),
260	>	PhaserTest.suite(),
261	>	ThreadLocalRandomTest.suite(),
262	>	AbstractExecutorServiceTest.suite(),
263	>	AbstractQueueTest.suite(),
264	>	AbstractQueuedSynchronizerTest.suite(),
265	>	AbstractQueuedLongSynchronizerTest.suite(),
266	>	ArrayBlockingQueueTest.suite(),
267	>	ArrayDequeTest.suite(),
268	>	AtomicBooleanTest.suite(),
269	>	AtomicIntegerArrayTest.suite(),
270	>	AtomicIntegerFieldUpdaterTest.suite(),
271	>	AtomicIntegerTest.suite(),
272	>	AtomicLongArrayTest.suite(),
273	>	AtomicLongFieldUpdaterTest.suite(),
274	>	AtomicLongTest.suite(),
275	>	AtomicMarkableReferenceTest.suite(),
276	>	AtomicReferenceArrayTest.suite(),
277	>	AtomicReferenceFieldUpdaterTest.suite(),
278	>	AtomicReferenceTest.suite(),
279	>	AtomicStampedReferenceTest.suite(),
280	>	ConcurrentHashMapTest.suite(),
281	>	ConcurrentLinkedDequeTest.suite(),
282	>	ConcurrentLinkedQueueTest.suite(),
283	>	ConcurrentSkipListMapTest.suite(),
284	>	ConcurrentSkipListSubMapTest.suite(),
285	>	ConcurrentSkipListSetTest.suite(),
286	>	ConcurrentSkipListSubSetTest.suite(),
287	>	CopyOnWriteArrayListTest.suite(),
288	>	CopyOnWriteArraySetTest.suite(),
289	>	CountDownLatchTest.suite(),
290	>	CyclicBarrierTest.suite(),
291	>	DelayQueueTest.suite(),
292	>	EntryTest.suite(),
293	>	ExchangerTest.suite(),
294	>	ExecutorsTest.suite(),
295	>	ExecutorCompletionServiceTest.suite(),
296	>	FutureTaskTest.suite(),
297	>	LinkedBlockingDequeTest.suite(),
298	>	LinkedBlockingQueueTest.suite(),
299	>	LinkedListTest.suite(),
300	>	LockSupportTest.suite(),
301	>	PriorityBlockingQueueTest.suite(),
302	>	PriorityQueueTest.suite(),
303	>	ReentrantLockTest.suite(),
304	>	ReentrantReadWriteLockTest.suite(),
305	>	ScheduledExecutorTest.suite(),
306	>	ScheduledExecutorSubclassTest.suite(),
307	>	SemaphoreTest.suite(),
308	>	SynchronousQueueTest.suite(),
309	>	SystemTest.suite(),
310	>	ThreadLocalTest.suite(),
311	>	ThreadPoolExecutorTest.suite(),
312	>	ThreadPoolExecutorSubclassTest.suite(),
313	>	ThreadTest.suite(),
314	>	TimeUnitTest.suite(),
315	>	TreeMapTest.suite(),
316	>	TreeSetTest.suite(),
317	>	TreeSubMapTest.suite(),
318	>	TreeSubSetTest.suite());
319	>
320	>	// Java8+ test classes
321	>	if (atLeastJava8()) {
322	>	String[] java8TestClassNames = {
323	>	"Atomic8Test",
324	>	"CompletableFutureTest",
325	>	"ConcurrentHashMap8Test",
326	>	"CountedCompleterTest",
327	>	"DoubleAccumulatorTest",
328	>	"DoubleAdderTest",
329	>	"ForkJoinPool8Test",
330	>	"ForkJoinTask8Test",
331	>	"LongAccumulatorTest",
332	>	"LongAdderTest",
333	>	"SplittableRandomTest",
334	>	"StampedLockTest",
335	>	"ThreadLocalRandom8Test",
336	>	};
337	>	addNamedTestClasses(suite, java8TestClassNames);
338	>	}
339	>
340	>	// Java9+ test classes
341	>	if (atLeastJava9()) {
342	>	String[] java9TestClassNames = {
343	>	"ThreadPoolExecutor9Test",
344	>	};
345	>	addNamedTestClasses(suite, java9TestClassNames);
346	>	}
347
348		return suite;
349		}
350
351	+	// Delays for timing-dependent tests, in milliseconds.
352
353		public static long SHORT_DELAY_MS;
354		public static long SMALL_DELAY_MS;
355		public static long MEDIUM_DELAY_MS;
356		public static long LONG_DELAY_MS;
357
200	–
358		/**
359		* Returns the shortest timed delay. This could
360		* be reimplemented to use for example a Property.
#	Line 206 | Line 363 | public class JSR166TestCase extends Test
363		return 50;
364		}
365
209	–
366		/**
367		* Sets delays as multiples of SHORT_DELAY.
368		*/
#	Line 214 | Line 370 | public class JSR166TestCase extends Test
370		SHORT_DELAY_MS = getShortDelay();
371		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
372		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
373	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
373	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
374	>	}
375	>
376	>	/**
377	>	* Returns a timeout in milliseconds to be used in tests that
378	>	* verify that operations block or time out.
379	>	*/
380	>	long timeoutMillis() {
381	>	return SHORT_DELAY_MS / 4;
382	>	}
383	>
384	>	/**
385	>	* Returns a new Date instance representing a time delayMillis
386	>	* milliseconds in the future.
387	>	*/
388	>	Date delayedDate(long delayMillis) {
389	>	return new Date(System.currentTimeMillis() + delayMillis);
390		}
391
392		/**
#	Line 238 | Line 410 | public class JSR166TestCase extends Test
410		}
411
412		/**
413	+	* Extra checks that get done for all test cases.
414	+	*
415		* Triggers test case failure if any thread assertions have failed,
416		* by rethrowing, in the test harness thread, any exception recorded
417		* earlier by threadRecordFailure.
418	+	*
419	+	* Triggers test case failure if interrupt status is set in the main thread.
420		*/
421		public void tearDown() throws Exception {
422	<	Throwable t = threadFailure.get();
422	>	Throwable t = threadFailure.getAndSet(null);
423		if (t != null) {
424		if (t instanceof Error)
425		throw (Error) t;
#	Line 251 | Line 427 | public class JSR166TestCase extends Test
427		throw (RuntimeException) t;
428		else if (t instanceof Exception)
429		throw (Exception) t;
430	<	else
431	<	throw new AssertionError(t);
430	>	else {
431	>	AssertionFailedError afe =
432	>	new AssertionFailedError(t.toString());
433	>	afe.initCause(t);
434	>	throw afe;
435	>	}
436	>	}
437	>
438	>	if (Thread.interrupted())
439	>	throw new AssertionFailedError("interrupt status set in main thread");
440	>
441	>	checkForkJoinPoolThreadLeaks();
442	>	}
443	>
444	>	/**
445	>	* Find missing try { ... } finally { joinPool(e); }
446	>	*/
447	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
448	>	Thread[] survivors = new Thread[5];
449	>	int count = Thread.enumerate(survivors);
450	>	for (int i = 0; i < count; i++) {
451	>	Thread thread = survivors[i];
452	>	String name = thread.getName();
453	>	if (name.startsWith("ForkJoinPool-")) {
454	>	// give thread some time to terminate
455	>	thread.join(LONG_DELAY_MS);
456	>	if (!thread.isAlive()) continue;
457	>	thread.stop();
458	>	throw new AssertionFailedError
459	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
460	>	toString(), name));
461	>	}
462		}
463		}
464
465		/**
466		* Just like fail(reason), but additionally recording (using
467	<	* threadRecordFailure) any AssertionError thrown, so that the current
468	<	* testcase will fail.
467	>	* threadRecordFailure) any AssertionFailedError thrown, so that
468	>	* the current testcase will fail.
469		*/
470		public void threadFail(String reason) {
471		try {
472		fail(reason);
473	<	} catch (Throwable t) {
473	>	} catch (AssertionFailedError t) {
474		threadRecordFailure(t);
475		fail(reason);
476		}
#	Line 272 | Line 478 | public class JSR166TestCase extends Test
478
479		/**
480		* Just like assertTrue(b), but additionally recording (using
481	<	* threadRecordFailure) any AssertionError thrown, so that the current
482	<	* testcase will fail.
481	>	* threadRecordFailure) any AssertionFailedError thrown, so that
482	>	* the current testcase will fail.
483		*/
484		public void threadAssertTrue(boolean b) {
485		try {
486		assertTrue(b);
487	<	} catch (AssertionError t) {
487	>	} catch (AssertionFailedError t) {
488		threadRecordFailure(t);
489		throw t;
490		}
#	Line 286 | Line 492 | public class JSR166TestCase extends Test
492
493		/**
494		* Just like assertFalse(b), but additionally recording (using
495	<	* threadRecordFailure) any AssertionError thrown, so that the
496	<	* current testcase will fail.
495	>	* threadRecordFailure) any AssertionFailedError thrown, so that
496	>	* the current testcase will fail.
497		*/
498		public void threadAssertFalse(boolean b) {
499		try {
500		assertFalse(b);
501	<	} catch (AssertionError t) {
501	>	} catch (AssertionFailedError t) {
502		threadRecordFailure(t);
503		throw t;
504		}
#	Line 300 | Line 506 | public class JSR166TestCase extends Test
506
507		/**
508		* Just like assertNull(x), but additionally recording (using
509	<	* threadRecordFailure) any AssertionError thrown, so that the
510	<	* current testcase will fail.
509	>	* threadRecordFailure) any AssertionFailedError thrown, so that
510	>	* the current testcase will fail.
511		*/
512		public void threadAssertNull(Object x) {
513		try {
514		assertNull(x);
515	<	} catch (AssertionError t) {
515	>	} catch (AssertionFailedError t) {
516		threadRecordFailure(t);
517		throw t;
518		}
#	Line 314 | Line 520 | public class JSR166TestCase extends Test
520
521		/**
522		* Just like assertEquals(x, y), but additionally recording (using
523	<	* threadRecordFailure) any AssertionError thrown, so that the
524	<	* current testcase will fail.
523	>	* threadRecordFailure) any AssertionFailedError thrown, so that
524	>	* the current testcase will fail.
525		*/
526		public void threadAssertEquals(long x, long y) {
527		try {
528		assertEquals(x, y);
529	<	} catch (AssertionError t) {
529	>	} catch (AssertionFailedError t) {
530		threadRecordFailure(t);
531		throw t;
532		}
#	Line 328 | Line 534 | public class JSR166TestCase extends Test
534
535		/**
536		* Just like assertEquals(x, y), but additionally recording (using
537	<	* threadRecordFailure) any AssertionError thrown, so that the
538	<	* current testcase will fail.
537	>	* threadRecordFailure) any AssertionFailedError thrown, so that
538	>	* the current testcase will fail.
539		*/
540		public void threadAssertEquals(Object x, Object y) {
541		try {
542		assertEquals(x, y);
543	<	} catch (AssertionError t) {
543	>	} catch (AssertionFailedError t) {
544		threadRecordFailure(t);
545		throw t;
546	+	} catch (Throwable t) {
547	+	threadUnexpectedException(t);
548		}
549		}
550
551		/**
552		* Just like assertSame(x, y), but additionally recording (using
553	<	* threadRecordFailure) any AssertionError thrown, so that the
554	<	* current testcase will fail.
553	>	* threadRecordFailure) any AssertionFailedError thrown, so that
554	>	* the current testcase will fail.
555		*/
556		public void threadAssertSame(Object x, Object y) {
557		try {
558		assertSame(x, y);
559	<	} catch (AssertionError t) {
559	>	} catch (AssertionFailedError t) {
560		threadRecordFailure(t);
561		throw t;
562		}
#	Line 369 | Line 577 | public class JSR166TestCase extends Test
577		}
578
579		/**
580	<	* Calls threadFail with message "Unexpected exception" + ex.
580	>	* Records the given exception using {@link #threadRecordFailure},
581	>	* then rethrows the exception, wrapping it in an
582	>	* AssertionFailedError if necessary.
583		*/
584		public void threadUnexpectedException(Throwable t) {
585		threadRecordFailure(t);
586		t.printStackTrace();
377	–	// Rethrow, wrapping in an AssertionError if necessary
587		if (t instanceof RuntimeException)
588		throw (RuntimeException) t;
589		else if (t instanceof Error)
590		throw (Error) t;
591		else {
592	<	AssertionError ae = new AssertionError("unexpected exception: " + t);
593	<	t.initCause(t);
594	<	throw ae;
595	<	}
592	>	AssertionFailedError afe =
593	>	new AssertionFailedError("unexpected exception: " + t);
594	>	afe.initCause(t);
595	>	throw afe;
596	>	}
597	>	}
598	>
599	>	/**
600	>	* Delays, via Thread.sleep, for the given millisecond delay, but
601	>	* if the sleep is shorter than specified, may re-sleep or yield
602	>	* until time elapses.
603	>	*/
604	>	static void delay(long millis) throws InterruptedException {
605	>	long startTime = System.nanoTime();
606	>	long ns = millis * 1000 * 1000;
607	>	for (;;) {
608	>	if (millis > 0L)
609	>	Thread.sleep(millis);
610	>	else // too short to sleep
611	>	Thread.yield();
612	>	long d = ns - (System.nanoTime() - startTime);
613	>	if (d > 0L)
614	>	millis = d / (1000 * 1000);
615	>	else
616	>	break;
617	>	}
618		}
619
620		/**
621		* Waits out termination of a thread pool or fails doing so.
622		*/
623	<	public void joinPool(ExecutorService exec) {
623	>	void joinPool(ExecutorService exec) {
624		try {
625		exec.shutdown();
626	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
626	>	assertTrue("ExecutorService did not terminate in a timely manner",
627	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
628		} catch (SecurityException ok) {
629		// Allowed in case test doesn't have privs
630		} catch (InterruptedException ie) {
#	Line 400 | Line 632 | public class JSR166TestCase extends Test
632		}
633		}
634
635	+	/**
636	+	* A debugging tool to print all stack traces, as jstack does.
637	+	*/
638	+	static void printAllStackTraces() {
639	+	for (ThreadInfo info :
640	+	ManagementFactory.getThreadMXBean()
641	+	.dumpAllThreads(true, true))
642	+	System.err.print(info);
643	+	}
644	+
645	+	/**
646	+	* Checks that thread does not terminate within the default
647	+	* millisecond delay of {@code timeoutMillis()}.
648	+	*/
649	+	void assertThreadStaysAlive(Thread thread) {
650	+	assertThreadStaysAlive(thread, timeoutMillis());
651	+	}
652	+
653	+	/**
654	+	* Checks that thread does not terminate within the given millisecond delay.
655	+	*/
656	+	void assertThreadStaysAlive(Thread thread, long millis) {
657	+	try {
658	+	// No need to optimize the failing case via Thread.join.
659	+	delay(millis);
660	+	assertTrue(thread.isAlive());
661	+	} catch (InterruptedException ie) {
662	+	fail("Unexpected InterruptedException");
663	+	}
664	+	}
665	+
666	+	/**
667	+	* Checks that the threads do not terminate within the default
668	+	* millisecond delay of {@code timeoutMillis()}.
669	+	*/
670	+	void assertThreadsStayAlive(Thread... threads) {
671	+	assertThreadsStayAlive(timeoutMillis(), threads);
672	+	}
673	+
674	+	/**
675	+	* Checks that the threads do not terminate within the given millisecond delay.
676	+	*/
677	+	void assertThreadsStayAlive(long millis, Thread... threads) {
678	+	try {
679	+	// No need to optimize the failing case via Thread.join.
680	+	delay(millis);
681	+	for (Thread thread : threads)
682	+	assertTrue(thread.isAlive());
683	+	} catch (InterruptedException ie) {
684	+	fail("Unexpected InterruptedException");
685	+	}
686	+	}
687	+
688	+	/**
689	+	* Checks that future.get times out, with the default timeout of
690	+	* {@code timeoutMillis()}.
691	+	*/
692	+	void assertFutureTimesOut(Future future) {
693	+	assertFutureTimesOut(future, timeoutMillis());
694	+	}
695	+
696	+	/**
697	+	* Checks that future.get times out, with the given millisecond timeout.
698	+	*/
699	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
700	+	long startTime = System.nanoTime();
701	+	try {
702	+	future.get(timeoutMillis, MILLISECONDS);
703	+	shouldThrow();
704	+	} catch (TimeoutException success) {
705	+	} catch (Exception e) {
706	+	threadUnexpectedException(e);
707	+	} finally { future.cancel(true); }
708	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
709	+	}
710
711		/**
712		* Fails with message "should throw exception".
#	Line 416 | Line 723 | public class JSR166TestCase extends Test
723		}
724
725		/**
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	–	/**
726		* The number of elements to place in collections, arrays, etc.
727		*/
728		public static final int SIZE = 20;
#	Line 449 | Line 747 | public class JSR166TestCase extends Test
747		public static final Integer m6  = new Integer(-6);
748		public static final Integer m10 = new Integer(-10);
749
452	–
750		/**
751		* Runs Runnable r with a security policy that permits precisely
752		* the specified permissions.  If there is no current security
#	Line 461 | Line 758 | public class JSR166TestCase extends Test
758		SecurityManager sm = System.getSecurityManager();
759		if (sm == null) {
760		r.run();
761	+	}
762	+	runWithSecurityManagerWithPermissions(r, permissions);
763	+	}
764	+
765	+	/**
766	+	* Runs Runnable r with a security policy that permits precisely
767	+	* the specified permissions.  If there is no current security
768	+	* manager, a temporary one is set for the duration of the
769	+	* Runnable.  We require that any security manager permit
770	+	* getPolicy/setPolicy.
771	+	*/
772	+	public void runWithSecurityManagerWithPermissions(Runnable r,
773	+	Permission... permissions) {
774	+	SecurityManager sm = System.getSecurityManager();
775	+	if (sm == null) {
776		Policy savedPolicy = Policy.getPolicy();
777		try {
778		Policy.setPolicy(permissivePolicy());
779		System.setSecurityManager(new SecurityManager());
780	<	runWithPermissions(r, permissions);
780	>	runWithSecurityManagerWithPermissions(r, permissions);
781		} finally {
782		System.setSecurityManager(null);
783		Policy.setPolicy(savedPolicy);
#	Line 513 | Line 825 | public class JSR166TestCase extends Test
825		return perms.implies(p);
826		}
827		public void refresh() {}
828	+	public String toString() {
829	+	List<Permission> ps = new ArrayList<Permission>();
830	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
831	+	ps.add(e.nextElement());
832	+	return "AdjustablePolicy with permissions " + ps;
833	+	}
834		}
835
836		/**
#	Line 535 | Line 853 | public class JSR166TestCase extends Test
853		}
854
855		/**
856	<	* Sleep until the timeout has elapsed, or interrupted.
857	<	* Does <em>NOT</em> throw InterruptedException.
856	>	* Sleeps until the given time has elapsed.
857	>	* Throws AssertionFailedError if interrupted.
858		*/
859	<	void sleepTillInterrupted(long timeoutMillis) {
859	>	void sleep(long millis) {
860		try {
861	<	Thread.sleep(timeoutMillis);
862	<	} catch (InterruptedException wakeup) {}
861	>	delay(millis);
862	>	} catch (InterruptedException ie) {
863	>	AssertionFailedError afe =
864	>	new AssertionFailedError("Unexpected InterruptedException");
865	>	afe.initCause(ie);
866	>	throw afe;
867	>	}
868	>	}
869	>
870	>	/**
871	>	* Spin-waits up to the specified number of milliseconds for the given
872	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
873	>	*/
874	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
875	>	long startTime = System.nanoTime();
876	>	for (;;) {
877	>	Thread.State s = thread.getState();
878	>	if (s == Thread.State.BLOCKED ||
879	>	s == Thread.State.WAITING ||
880	>	s == Thread.State.TIMED_WAITING)
881	>	return;
882	>	else if (s == Thread.State.TERMINATED)
883	>	fail("Unexpected thread termination");
884	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
885	>	threadAssertTrue(thread.isAlive());
886	>	return;
887	>	}
888	>	Thread.yield();
889	>	}
890		}
891
892		/**
893	<	* Returns a new started Thread running the given runnable.
893	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
894	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
895	>	*/
896	>	void waitForThreadToEnterWaitState(Thread thread) {
897	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
898	>	}
899	>
900	>	/**
901	>	* Returns the number of milliseconds since time given by
902	>	* startNanoTime, which must have been previously returned from a
903	>	* call to {@link System.nanoTime()}.
904	>	*/
905	>	long millisElapsedSince(long startNanoTime) {
906	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
907	>	}
908	>
909	>	/**
910	>	* Returns a new started daemon Thread running the given runnable.
911		*/
912		Thread newStartedThread(Runnable runnable) {
913		Thread t = new Thread(runnable);
914	+	t.setDaemon(true);
915		t.start();
916		return t;
917		}
918
919	+	/**
920	+	* Waits for the specified time (in milliseconds) for the thread
921	+	* to terminate (using {@link Thread#join(long)}), else interrupts
922	+	* the thread (in the hope that it may terminate later) and fails.
923	+	*/
924	+	void awaitTermination(Thread t, long timeoutMillis) {
925	+	try {
926	+	t.join(timeoutMillis);
927	+	} catch (InterruptedException ie) {
928	+	threadUnexpectedException(ie);
929	+	} finally {
930	+	if (t.getState() != Thread.State.TERMINATED) {
931	+	t.interrupt();
932	+	fail("Test timed out");
933	+	}
934	+	}
935	+	}
936	+
937	+	/**
938	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
939	+	* terminate (using {@link Thread#join(long)}), else interrupts
940	+	* the thread (in the hope that it may terminate later) and fails.
941	+	*/
942	+	void awaitTermination(Thread t) {
943	+	awaitTermination(t, LONG_DELAY_MS);
944	+	}
945	+
946		// Some convenient Runnable classes
947
948		public abstract class CheckedRunnable implements Runnable {
#	Line 615 | Line 1005 | public class JSR166TestCase extends Test
1005		realRun();
1006		threadShouldThrow("InterruptedException");
1007		} catch (InterruptedException success) {
1008	+	threadAssertFalse(Thread.interrupted());
1009		} catch (Throwable t) {
1010		threadUnexpectedException(t);
1011		}
#	Line 644 | Line 1035 | public class JSR166TestCase extends Test
1035		threadShouldThrow("InterruptedException");
1036		return result;
1037		} catch (InterruptedException success) {
1038	+	threadAssertFalse(Thread.interrupted());
1039		} catch (Throwable t) {
1040		threadUnexpectedException(t);
1041		}
#	Line 667 | Line 1059 | public class JSR166TestCase extends Test
1059
1060		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1061		return new CheckedCallable<String>() {
1062	<	public String realCall() {
1062	>	protected String realCall() {
1063		try {
1064		latch.await();
1065		} catch (InterruptedException quittingTime) {}
#	Line 675 | Line 1067 | public class JSR166TestCase extends Test
1067		}};
1068		}
1069
1070	+	public Runnable awaiter(final CountDownLatch latch) {
1071	+	return new CheckedRunnable() {
1072	+	public void realRun() throws InterruptedException {
1073	+	await(latch);
1074	+	}};
1075	+	}
1076	+
1077	+	public void await(CountDownLatch latch) {
1078	+	try {
1079	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1080	+	} catch (Throwable t) {
1081	+	threadUnexpectedException(t);
1082	+	}
1083	+	}
1084	+
1085	+	public void await(Semaphore semaphore) {
1086	+	try {
1087	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1088	+	} catch (Throwable t) {
1089	+	threadUnexpectedException(t);
1090	+	}
1091	+	}
1092	+
1093	+	//     /**
1094	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1095	+	//      */
1096	+	//     public void await(AtomicBoolean flag) {
1097	+	//         await(flag, LONG_DELAY_MS);
1098	+	//     }
1099	+
1100	+	//     /**
1101	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1102	+	//      */
1103	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1104	+	//         long startTime = System.nanoTime();
1105	+	//         while (!flag.get()) {
1106	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1107	+	//                 throw new AssertionFailedError("timed out");
1108	+	//             Thread.yield();
1109	+	//         }
1110	+	//     }
1111	+
1112		public static class NPETask implements Callable<String> {
1113		public String call() { throw new NullPointerException(); }
1114		}
#	Line 685 | Line 1119 | public class JSR166TestCase extends Test
1119
1120		public class ShortRunnable extends CheckedRunnable {
1121		protected void realRun() throws Throwable {
1122	<	Thread.sleep(SHORT_DELAY_MS);
1122	>	delay(SHORT_DELAY_MS);
1123		}
1124		}
1125
1126		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1127		protected void realRun() throws InterruptedException {
1128	<	Thread.sleep(SHORT_DELAY_MS);
1128	>	delay(SHORT_DELAY_MS);
1129		}
1130		}
1131
1132		public class SmallRunnable extends CheckedRunnable {
1133		protected void realRun() throws Throwable {
1134	<	Thread.sleep(SMALL_DELAY_MS);
1134	>	delay(SMALL_DELAY_MS);
1135		}
1136		}
1137
1138		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1139		protected void realRun() {
1140		try {
1141	<	Thread.sleep(SMALL_DELAY_MS);
1141	>	delay(SMALL_DELAY_MS);
1142		} catch (InterruptedException ok) {}
1143		}
1144		}
1145
1146		public class SmallCallable extends CheckedCallable {
1147		protected Object realCall() throws InterruptedException {
1148	<	Thread.sleep(SMALL_DELAY_MS);
1148	>	delay(SMALL_DELAY_MS);
1149		return Boolean.TRUE;
1150		}
1151		}
1152
719	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
720	–	protected void realRun() throws InterruptedException {
721	–	Thread.sleep(SMALL_DELAY_MS);
722	–	}
723	–	}
724	–
1153		public class MediumRunnable extends CheckedRunnable {
1154		protected void realRun() throws Throwable {
1155	<	Thread.sleep(MEDIUM_DELAY_MS);
1155	>	delay(MEDIUM_DELAY_MS);
1156		}
1157		}
1158
1159		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1160		protected void realRun() throws InterruptedException {
1161	<	Thread.sleep(MEDIUM_DELAY_MS);
1161	>	delay(MEDIUM_DELAY_MS);
1162		}
1163		}
1164
1165	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1166	+	return new CheckedRunnable() {
1167	+	protected void realRun() {
1168	+	try {
1169	+	delay(timeoutMillis);
1170	+	} catch (InterruptedException ok) {}
1171	+	}};
1172	+	}
1173	+
1174		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1175		protected void realRun() {
1176		try {
1177	<	Thread.sleep(MEDIUM_DELAY_MS);
1177	>	delay(MEDIUM_DELAY_MS);
1178		} catch (InterruptedException ok) {}
1179		}
1180		}
#	Line 745 | Line 1182 | public class JSR166TestCase extends Test
1182		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1183		protected void realRun() {
1184		try {
1185	<	Thread.sleep(LONG_DELAY_MS);
1185	>	delay(LONG_DELAY_MS);
1186		} catch (InterruptedException ok) {}
1187		}
1188		}
#	Line 759 | Line 1196 | public class JSR166TestCase extends Test
1196		}
1197		}
1198
1199	+	public interface TrackedRunnable extends Runnable {
1200	+	boolean isDone();
1201	+	}
1202	+
1203	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1204	+	return new TrackedRunnable() {
1205	+	private volatile boolean done = false;
1206	+	public boolean isDone() { return done; }
1207	+	public void run() {
1208	+	try {
1209	+	delay(timeoutMillis);
1210	+	done = true;
1211	+	} catch (InterruptedException ok) {}
1212	+	}
1213	+	};
1214	+	}
1215	+
1216		public static class TrackedShortRunnable implements Runnable {
1217		public volatile boolean done = false;
1218		public void run() {
1219		try {
1220	<	Thread.sleep(SMALL_DELAY_MS);
1220	>	delay(SHORT_DELAY_MS);
1221	>	done = true;
1222	>	} catch (InterruptedException ok) {}
1223	>	}
1224	>	}
1225	>
1226	>	public static class TrackedSmallRunnable implements Runnable {
1227	>	public volatile boolean done = false;
1228	>	public void run() {
1229	>	try {
1230	>	delay(SMALL_DELAY_MS);
1231		done = true;
1232		} catch (InterruptedException ok) {}
1233		}
#	Line 773 | Line 1237 | public class JSR166TestCase extends Test
1237		public volatile boolean done = false;
1238		public void run() {
1239		try {
1240	<	Thread.sleep(MEDIUM_DELAY_MS);
1240	>	delay(MEDIUM_DELAY_MS);
1241		done = true;
1242		} catch (InterruptedException ok) {}
1243		}
#	Line 783 | Line 1247 | public class JSR166TestCase extends Test
1247		public volatile boolean done = false;
1248		public void run() {
1249		try {
1250	<	Thread.sleep(LONG_DELAY_MS);
1250	>	delay(LONG_DELAY_MS);
1251		done = true;
1252		} catch (InterruptedException ok) {}
1253		}
#	Line 800 | Line 1264 | public class JSR166TestCase extends Test
1264		public volatile boolean done = false;
1265		public Object call() {
1266		try {
1267	<	Thread.sleep(SMALL_DELAY_MS);
1267	>	delay(SMALL_DELAY_MS);
1268		done = true;
1269		} catch (InterruptedException ok) {}
1270		return Boolean.TRUE;
#	Line 813 | Line 1277 | public class JSR166TestCase extends Test
1277		public abstract class CheckedRecursiveAction extends RecursiveAction {
1278		protected abstract void realCompute() throws Throwable;
1279
1280	<	public final void compute() {
1280	>	@Override protected final void compute() {
1281		try {
1282		realCompute();
1283		} catch (Throwable t) {
#	Line 828 | Line 1292 | public class JSR166TestCase extends Test
1292		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1293		protected abstract T realCompute() throws Throwable;
1294
1295	<	public final T compute() {
1295	>	@Override protected final T compute() {
1296		try {
1297		return realCompute();
1298		} catch (Throwable t) {
#	Line 846 | Line 1310 | public class JSR166TestCase extends Test
1310		ThreadPoolExecutor executor) {}
1311		}
1312
1313	+	/**
1314	+	* A CyclicBarrier that uses timed await and fails with
1315	+	* AssertionFailedErrors instead of throwing checked exceptions.
1316	+	*/
1317	+	public class CheckedBarrier extends CyclicBarrier {
1318	+	public CheckedBarrier(int parties) { super(parties); }
1319	+
1320	+	public int await() {
1321	+	try {
1322	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1323	+	} catch (TimeoutException e) {
1324	+	throw new AssertionFailedError("timed out");
1325	+	} catch (Exception e) {
1326	+	AssertionFailedError afe =
1327	+	new AssertionFailedError("Unexpected exception: " + e);
1328	+	afe.initCause(e);
1329	+	throw afe;
1330	+	}
1331	+	}
1332	+	}
1333	+
1334	+	void checkEmpty(BlockingQueue q) {
1335	+	try {
1336	+	assertTrue(q.isEmpty());
1337	+	assertEquals(0, q.size());
1338	+	assertNull(q.peek());
1339	+	assertNull(q.poll());
1340	+	assertNull(q.poll(0, MILLISECONDS));
1341	+	assertEquals(q.toString(), "[]");
1342	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1343	+	assertFalse(q.iterator().hasNext());
1344	+	try {
1345	+	q.element();
1346	+	shouldThrow();
1347	+	} catch (NoSuchElementException success) {}
1348	+	try {
1349	+	q.iterator().next();
1350	+	shouldThrow();
1351	+	} catch (NoSuchElementException success) {}
1352	+	try {
1353	+	q.remove();
1354	+	shouldThrow();
1355	+	} catch (NoSuchElementException success) {}
1356	+	} catch (InterruptedException ie) {
1357	+	threadUnexpectedException(ie);
1358	+	}
1359	+	}
1360	+
1361	+	void assertSerialEquals(Object x, Object y) {
1362	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1363	+	}
1364	+
1365	+	void assertNotSerialEquals(Object x, Object y) {
1366	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1367	+	}
1368	+
1369	+	byte[] serialBytes(Object o) {
1370	+	try {
1371	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1372	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1373	+	oos.writeObject(o);
1374	+	oos.flush();
1375	+	oos.close();
1376	+	return bos.toByteArray();
1377	+	} catch (Throwable t) {
1378	+	threadUnexpectedException(t);
1379	+	return new byte[0];
1380	+	}
1381	+	}
1382	+
1383	+	@SuppressWarnings("unchecked")
1384	+	<T> T serialClone(T o) {
1385	+	try {
1386	+	ObjectInputStream ois = new ObjectInputStream
1387	+	(new ByteArrayInputStream(serialBytes(o)));
1388	+	T clone = (T) ois.readObject();
1389	+	assertSame(o.getClass(), clone.getClass());
1390	+	return clone;
1391	+	} catch (Throwable t) {
1392	+	threadUnexpectedException(t);
1393	+	return null;
1394	+	}
1395	+	}
1396	+
1397	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1398	+	Runnable... throwingActions) {
1399	+	for (Runnable throwingAction : throwingActions) {
1400	+	boolean threw = false;
1401	+	try { throwingAction.run(); }
1402	+	catch (Throwable t) {
1403	+	threw = true;
1404	+	if (!expectedExceptionClass.isInstance(t)) {
1405	+	AssertionFailedError afe =
1406	+	new AssertionFailedError
1407	+	("Expected " + expectedExceptionClass.getName() +
1408	+	", got " + t.getClass().getName());
1409	+	afe.initCause(t);
1410	+	threadUnexpectedException(afe);
1411	+	}
1412	+	}
1413	+	if (!threw)
1414	+	shouldThrow(expectedExceptionClass.getName());
1415	+	}
1416	+	}
1417		}

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