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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.57 by jsr166, Mon Oct 4 05:45:19 2010 UTC vs.
Revision 1.131 by jsr166, Sat Apr 25 04:55:30 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–	import junit.framework.*;
10	–	import java.util.PropertyPermission;
11	–	import java.util.concurrent.*;
12	–	import java.util.concurrent.atomic.AtomicReference;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	+
12	+	import java.io.ByteArrayInputStream;
13	+	import java.io.ByteArrayOutputStream;
14	+	import java.io.ObjectInputStream;
15	+	import java.io.ObjectOutputStream;
16	+	import java.lang.management.ManagementFactory;
17	+	import java.lang.management.ThreadInfo;
18	+	import java.lang.reflect.Method;
19		import java.security.CodeSource;
20		import java.security.Permission;
21		import java.security.PermissionCollection;
#	Line 18 | Line 23 | import java.security.Permissions;
23		import java.security.Policy;
24		import java.security.ProtectionDomain;
25		import java.security.SecurityPermission;
26	+	import java.util.ArrayList;
27	+	import java.util.Arrays;
28	+	import java.util.Date;
29	+	import java.util.Enumeration;
30	+	import java.util.Iterator;
31	+	import java.util.List;
32	+	import java.util.NoSuchElementException;
33	+	import java.util.PropertyPermission;
34	+	import java.util.concurrent.BlockingQueue;
35	+	import java.util.concurrent.Callable;
36	+	import java.util.concurrent.CountDownLatch;
37	+	import java.util.concurrent.CyclicBarrier;
38	+	import java.util.concurrent.ExecutorService;
39	+	import java.util.concurrent.Future;
40	+	import java.util.concurrent.RecursiveAction;
41	+	import java.util.concurrent.RecursiveTask;
42	+	import java.util.concurrent.RejectedExecutionHandler;
43	+	import java.util.concurrent.Semaphore;
44	+	import java.util.concurrent.ThreadFactory;
45	+	import java.util.concurrent.ThreadPoolExecutor;
46	+	import java.util.concurrent.TimeoutException;
47	+	import java.util.concurrent.atomic.AtomicReference;
48	+	import java.util.regex.Pattern;
49	+
50	+	import junit.framework.AssertionFailedError;
51	+	import junit.framework.Test;
52	+	import junit.framework.TestCase;
53	+	import junit.framework.TestResult;
54	+	import junit.framework.TestSuite;
55
56		/**
57		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 60 | Line 94 | import java.security.SecurityPermission;
94		*
95		* </ol>
96		*
97	<	* <p> <b>Other notes</b>
97	>	* <p><b>Other notes</b>
98		* <ul>
99		*
100		* <li> Usually, there is one testcase method per JSR166 method
#	Line 96 | Line 130 | public class JSR166TestCase extends Test
130		private static final boolean useSecurityManager =
131		Boolean.getBoolean("jsr166.useSecurityManager");
132
133	+	protected static final boolean expensiveTests =
134	+	Boolean.getBoolean("jsr166.expensiveTests");
135	+
136	+	/**
137	+	* If true, also run tests that are not part of the official tck
138	+	* because they test unspecified implementation details.
139	+	*/
140	+	protected static final boolean testImplementationDetails =
141	+	Boolean.getBoolean("jsr166.testImplementationDetails");
142	+
143	+	/**
144	+	* If true, report on stdout all "slow" tests, that is, ones that
145	+	* take more than profileThreshold milliseconds to execute.
146	+	*/
147	+	private static final boolean profileTests =
148	+	Boolean.getBoolean("jsr166.profileTests");
149	+
150	+	/**
151	+	* The number of milliseconds that tests are permitted for
152	+	* execution without being reported, when profileTests is set.
153	+	*/
154	+	private static final long profileThreshold =
155	+	Long.getLong("jsr166.profileThreshold", 100);
156	+
157	+	/**
158	+	* The number of repetitions per test (for tickling rare bugs).
159	+	*/
160	+	private static final int runsPerTest =
161	+	Integer.getInteger("jsr166.runsPerTest", 1);
162	+
163	+	/**
164	+	* The number of repetitions of the test suite (for finding leaks?).
165	+	*/
166	+	private static final int suiteRuns =
167	+	Integer.getInteger("jsr166.suiteRuns", 1);
168	+
169	+	/**
170	+	* A filter for tests to run, matching strings of the form
171	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
172	+	* Usefully combined with jsr166.runsPerTest.
173	+	*/
174	+	private static final Pattern methodFilter = methodFilter();
175	+
176	+	private static Pattern methodFilter() {
177	+	String regex = System.getProperty("jsr166.methodFilter");
178	+	return (regex == null) ? null : Pattern.compile(regex);
179	+	}
180	+
181	+	protected void runTest() throws Throwable {
182	+	if (methodFilter == null
183	+	|| methodFilter.matcher(toString()).find()) {
184	+	for (int i = 0; i < runsPerTest; i++) {
185	+	if (profileTests)
186	+	runTestProfiled();
187	+	else
188	+	super.runTest();
189	+	}
190	+	}
191	+	}
192	+
193	+	protected void runTestProfiled() throws Throwable {
194	+	// Warmup run, notably to trigger all needed classloading.
195	+	super.runTest();
196	+	long t0 = System.nanoTime();
197	+	try {
198	+	super.runTest();
199	+	} finally {
200	+	long elapsedMillis = millisElapsedSince(t0);
201	+	if (elapsedMillis >= profileThreshold)
202	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
203	+	}
204	+	}
205	+
206		/**
207	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
207	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
208		*/
209		public static void main(String[] args) {
210	+	main(suite(), args);
211	+	}
212	+
213	+	/**
214	+	* Runs all unit tests in the given test suite.
215	+	* Actual behavior influenced by system properties jsr166.*
216	+	*/
217	+	static void main(Test suite, String[] args) {
218		if (useSecurityManager) {
219		System.err.println("Setting a permissive security manager");
220		Policy.setPolicy(permissivePolicy());
221		System.setSecurityManager(new SecurityManager());
222		}
223	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
224	<
225	<	Test s = suite();
226	<	for (int i = 0; i < iters; ++i) {
112	<	junit.textui.TestRunner.run(s);
223	>	for (int i = 0; i < suiteRuns; i++) {
224	>	TestResult result = junit.textui.TestRunner.run(suite);
225	>	if (!result.wasSuccessful())
226	>	System.exit(1);
227		System.gc();
228		System.runFinalization();
229		}
116	–	System.exit(0);
230		}
231
232	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
233	+	TestSuite suite = new TestSuite();
234	+	for (Object suiteOrClass : suiteOrClasses) {
235	+	if (suiteOrClass instanceof TestSuite)
236	+	suite.addTest((TestSuite) suiteOrClass);
237	+	else if (suiteOrClass instanceof Class)
238	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
239	+	else
240	+	throw new ClassCastException("not a test suite or class");
241	+	}
242	+	return suite;
243	+	}
244	+
245	+	public static void addNamedTestClasses(TestSuite suite,
246	+	String... testClassNames) {
247	+	for (String testClassName : testClassNames) {
248	+	try {
249	+	Class<?> testClass = Class.forName(testClassName);
250	+	Method m = testClass.getDeclaredMethod("suite",
251	+	new Class<?>[0]);
252	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
253	+	} catch (Exception e) {
254	+	throw new Error("Missing test class", e);
255	+	}
256	+	}
257	+	}
258	+
259	+	public static final double JAVA_CLASS_VERSION;
260	+	public static final String JAVA_SPECIFICATION_VERSION;
261	+	static {
262	+	try {
263	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
264	+	new java.security.PrivilegedAction<Double>() {
265	+	public Double run() {
266	+	return Double.valueOf(System.getProperty("java.class.version"));}});
267	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
268	+	new java.security.PrivilegedAction<String>() {
269	+	public String run() {
270	+	return System.getProperty("java.specification.version");}});
271	+	} catch (Throwable t) {
272	+	throw new Error(t);
273	+	}
274	+	}
275	+
276	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
277	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
278	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
279	+	public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
280	+
281		/**
282	<	* Collects all JSR166 unit tests as one suite
282	>	* Collects all JSR166 unit tests as one suite.
283		*/
284		public static Test suite() {
285	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
286	<
287	<	suite.addTest(ForkJoinPoolTest.suite());
288	<	suite.addTest(ForkJoinTaskTest.suite());
289	<	suite.addTest(RecursiveActionTest.suite());
290	<	suite.addTest(RecursiveTaskTest.suite());
291	<	suite.addTest(LinkedTransferQueueTest.suite());
292	<	suite.addTest(PhaserTest.suite());
293	<	suite.addTest(ThreadLocalRandomTest.suite());
294	<	suite.addTest(AbstractExecutorServiceTest.suite());
295	<	suite.addTest(AbstractQueueTest.suite());
296	<	suite.addTest(AbstractQueuedSynchronizerTest.suite());
297	<	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
298	<	suite.addTest(ArrayBlockingQueueTest.suite());
299	<	suite.addTest(ArrayDequeTest.suite());
300	<	suite.addTest(AtomicBooleanTest.suite());
301	<	suite.addTest(AtomicIntegerArrayTest.suite());
302	<	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
303	<	suite.addTest(AtomicIntegerTest.suite());
304	<	suite.addTest(AtomicLongArrayTest.suite());
305	<	suite.addTest(AtomicLongFieldUpdaterTest.suite());
306	<	suite.addTest(AtomicLongTest.suite());
307	<	suite.addTest(AtomicMarkableReferenceTest.suite());
308	<	suite.addTest(AtomicReferenceArrayTest.suite());
309	<	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
310	<	suite.addTest(AtomicReferenceTest.suite());
311	<	suite.addTest(AtomicStampedReferenceTest.suite());
312	<	suite.addTest(ConcurrentHashMapTest.suite());
313	<	suite.addTest(ConcurrentLinkedDequeTest.suite());
314	<	suite.addTest(ConcurrentLinkedQueueTest.suite());
315	<	suite.addTest(ConcurrentSkipListMapTest.suite());
316	<	suite.addTest(ConcurrentSkipListSubMapTest.suite());
317	<	suite.addTest(ConcurrentSkipListSetTest.suite());
318	<	suite.addTest(ConcurrentSkipListSubSetTest.suite());
319	<	suite.addTest(CopyOnWriteArrayListTest.suite());
320	<	suite.addTest(CopyOnWriteArraySetTest.suite());
321	<	suite.addTest(CountDownLatchTest.suite());
322	<	suite.addTest(CyclicBarrierTest.suite());
323	<	suite.addTest(DelayQueueTest.suite());
324	<	suite.addTest(EntryTest.suite());
325	<	suite.addTest(ExchangerTest.suite());
326	<	suite.addTest(ExecutorsTest.suite());
327	<	suite.addTest(ExecutorCompletionServiceTest.suite());
328	<	suite.addTest(FutureTaskTest.suite());
329	<	suite.addTest(LinkedBlockingDequeTest.suite());
330	<	suite.addTest(LinkedBlockingQueueTest.suite());
331	<	suite.addTest(LinkedListTest.suite());
332	<	suite.addTest(LockSupportTest.suite());
333	<	suite.addTest(PriorityBlockingQueueTest.suite());
334	<	suite.addTest(PriorityQueueTest.suite());
335	<	suite.addTest(ReentrantLockTest.suite());
336	<	suite.addTest(ReentrantReadWriteLockTest.suite());
337	<	suite.addTest(ScheduledExecutorTest.suite());
338	<	suite.addTest(ScheduledExecutorSubclassTest.suite());
339	<	suite.addTest(SemaphoreTest.suite());
340	<	suite.addTest(SynchronousQueueTest.suite());
341	<	suite.addTest(SystemTest.suite());
342	<	suite.addTest(ThreadLocalTest.suite());
343	<	suite.addTest(ThreadPoolExecutorTest.suite());
344	<	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
345	<	suite.addTest(ThreadTest.suite());
346	<	suite.addTest(TimeUnitTest.suite());
347	<	suite.addTest(TreeMapTest.suite());
348	<	suite.addTest(TreeSetTest.suite());
349	<	suite.addTest(TreeSubMapTest.suite());
350	<	suite.addTest(TreeSubSetTest.suite());
285	>	// Java7+ test classes
286	>	TestSuite suite = newTestSuite(
287	>	ForkJoinPoolTest.suite(),
288	>	ForkJoinTaskTest.suite(),
289	>	RecursiveActionTest.suite(),
290	>	RecursiveTaskTest.suite(),
291	>	LinkedTransferQueueTest.suite(),
292	>	PhaserTest.suite(),
293	>	ThreadLocalRandomTest.suite(),
294	>	AbstractExecutorServiceTest.suite(),
295	>	AbstractQueueTest.suite(),
296	>	AbstractQueuedSynchronizerTest.suite(),
297	>	AbstractQueuedLongSynchronizerTest.suite(),
298	>	ArrayBlockingQueueTest.suite(),
299	>	ArrayDequeTest.suite(),
300	>	AtomicBooleanTest.suite(),
301	>	AtomicIntegerArrayTest.suite(),
302	>	AtomicIntegerFieldUpdaterTest.suite(),
303	>	AtomicIntegerTest.suite(),
304	>	AtomicLongArrayTest.suite(),
305	>	AtomicLongFieldUpdaterTest.suite(),
306	>	AtomicLongTest.suite(),
307	>	AtomicMarkableReferenceTest.suite(),
308	>	AtomicReferenceArrayTest.suite(),
309	>	AtomicReferenceFieldUpdaterTest.suite(),
310	>	AtomicReferenceTest.suite(),
311	>	AtomicStampedReferenceTest.suite(),
312	>	ConcurrentHashMapTest.suite(),
313	>	ConcurrentLinkedDequeTest.suite(),
314	>	ConcurrentLinkedQueueTest.suite(),
315	>	ConcurrentSkipListMapTest.suite(),
316	>	ConcurrentSkipListSubMapTest.suite(),
317	>	ConcurrentSkipListSetTest.suite(),
318	>	ConcurrentSkipListSubSetTest.suite(),
319	>	CopyOnWriteArrayListTest.suite(),
320	>	CopyOnWriteArraySetTest.suite(),
321	>	CountDownLatchTest.suite(),
322	>	CyclicBarrierTest.suite(),
323	>	DelayQueueTest.suite(),
324	>	EntryTest.suite(),
325	>	ExchangerTest.suite(),
326	>	ExecutorsTest.suite(),
327	>	ExecutorCompletionServiceTest.suite(),
328	>	FutureTaskTest.suite(),
329	>	LinkedBlockingDequeTest.suite(),
330	>	LinkedBlockingQueueTest.suite(),
331	>	LinkedListTest.suite(),
332	>	LockSupportTest.suite(),
333	>	PriorityBlockingQueueTest.suite(),
334	>	PriorityQueueTest.suite(),
335	>	ReentrantLockTest.suite(),
336	>	ReentrantReadWriteLockTest.suite(),
337	>	ScheduledExecutorTest.suite(),
338	>	ScheduledExecutorSubclassTest.suite(),
339	>	SemaphoreTest.suite(),
340	>	SynchronousQueueTest.suite(),
341	>	SystemTest.suite(),
342	>	ThreadLocalTest.suite(),
343	>	ThreadPoolExecutorTest.suite(),
344	>	ThreadPoolExecutorSubclassTest.suite(),
345	>	ThreadTest.suite(),
346	>	TimeUnitTest.suite(),
347	>	TreeMapTest.suite(),
348	>	TreeSetTest.suite(),
349	>	TreeSubMapTest.suite(),
350	>	TreeSubSetTest.suite());
351	>
352	>	// Java8+ test classes
353	>	if (atLeastJava8()) {
354	>	String[] java8TestClassNames = {
355	>	"Atomic8Test",
356	>	"CompletableFutureTest",
357	>	"ConcurrentHashMap8Test",
358	>	"CountedCompleterTest",
359	>	"DoubleAccumulatorTest",
360	>	"DoubleAdderTest",
361	>	"ForkJoinPool8Test",
362	>	"ForkJoinTask8Test",
363	>	"LongAccumulatorTest",
364	>	"LongAdderTest",
365	>	"SplittableRandomTest",
366	>	"StampedLockTest",
367	>	"ThreadLocalRandom8Test",
368	>	};
369	>	addNamedTestClasses(suite, java8TestClassNames);
370	>	}
371	>
372	>	// Java9+ test classes
373	>	if (atLeastJava9()) {
374	>	String[] java9TestClassNames = {
375	>	"ThreadPoolExecutor9Test",
376	>	};
377	>	addNamedTestClasses(suite, java9TestClassNames);
378	>	}
379
380		return suite;
381		}
382
383	+	// Delays for timing-dependent tests, in milliseconds.
384
385		public static long SHORT_DELAY_MS;
386		public static long SMALL_DELAY_MS;
387		public static long MEDIUM_DELAY_MS;
388		public static long LONG_DELAY_MS;
389
199	–
390		/**
391		* Returns the shortest timed delay. This could
392		* be reimplemented to use for example a Property.
#	Line 205 | Line 395 | public class JSR166TestCase extends Test
395		return 50;
396		}
397
208	–
398		/**
399		* Sets delays as multiples of SHORT_DELAY.
400		*/
#	Line 213 | Line 402 | public class JSR166TestCase extends Test
402		SHORT_DELAY_MS = getShortDelay();
403		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
404		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
405	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
405	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
406	>	}
407	>
408	>	/**
409	>	* Returns a timeout in milliseconds to be used in tests that
410	>	* verify that operations block or time out.
411	>	*/
412	>	long timeoutMillis() {
413	>	return SHORT_DELAY_MS / 4;
414	>	}
415	>
416	>	/**
417	>	* Returns a new Date instance representing a time delayMillis
418	>	* milliseconds in the future.
419	>	*/
420	>	Date delayedDate(long delayMillis) {
421	>	return new Date(System.currentTimeMillis() + delayMillis);
422		}
423
424		/**
#	Line 237 | Line 442 | public class JSR166TestCase extends Test
442		}
443
444		/**
445	+	* Extra checks that get done for all test cases.
446	+	*
447		* Triggers test case failure if any thread assertions have failed,
448		* by rethrowing, in the test harness thread, any exception recorded
449		* earlier by threadRecordFailure.
450	+	*
451	+	* Triggers test case failure if interrupt status is set in the main thread.
452		*/
453		public void tearDown() throws Exception {
454	<	Throwable t = threadFailure.get();
454	>	Throwable t = threadFailure.getAndSet(null);
455		if (t != null) {
456		if (t instanceof Error)
457		throw (Error) t;
#	Line 257 | Line 466 | public class JSR166TestCase extends Test
466		throw afe;
467		}
468		}
469	+
470	+	if (Thread.interrupted())
471	+	throw new AssertionFailedError("interrupt status set in main thread");
472	+
473	+	checkForkJoinPoolThreadLeaks();
474	+	}
475	+
476	+	/**
477	+	* Finds missing try { ... } finally { joinPool(e); }
478	+	*/
479	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
480	+	Thread[] survivors = new Thread[5];
481	+	int count = Thread.enumerate(survivors);
482	+	for (int i = 0; i < count; i++) {
483	+	Thread thread = survivors[i];
484	+	String name = thread.getName();
485	+	if (name.startsWith("ForkJoinPool-")) {
486	+	// give thread some time to terminate
487	+	thread.join(LONG_DELAY_MS);
488	+	if (!thread.isAlive()) continue;
489	+	thread.stop();
490	+	throw new AssertionFailedError
491	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
492	+	toString(), name));
493	+	}
494	+	}
495		}
496
497		/**
#	Line 337 | Line 572 | public class JSR166TestCase extends Test
572		public void threadAssertEquals(Object x, Object y) {
573		try {
574		assertEquals(x, y);
575	<	} catch (AssertionFailedError t) {
576	<	threadRecordFailure(t);
577	<	throw t;
578	<	} catch (Throwable t) {
579	<	threadUnexpectedException(t);
575	>	} catch (AssertionFailedError fail) {
576	>	threadRecordFailure(fail);
577	>	throw fail;
578	>	} catch (Throwable fail) {
579	>	threadUnexpectedException(fail);
580		}
581		}
582
#	Line 353 | Line 588 | public class JSR166TestCase extends Test
588		public void threadAssertSame(Object x, Object y) {
589		try {
590		assertSame(x, y);
591	<	} catch (AssertionFailedError t) {
592	<	threadRecordFailure(t);
593	<	throw t;
591	>	} catch (AssertionFailedError fail) {
592	>	threadRecordFailure(fail);
593	>	throw fail;
594		}
595		}
596
#	Line 388 | Line 623 | public class JSR166TestCase extends Test
623		else {
624		AssertionFailedError afe =
625		new AssertionFailedError("unexpected exception: " + t);
626	<	t.initCause(t);
626	>	afe.initCause(t);
627		throw afe;
628		}
629		}
630
631		/**
632	+	* Delays, via Thread.sleep, for the given millisecond delay, but
633	+	* if the sleep is shorter than specified, may re-sleep or yield
634	+	* until time elapses.
635	+	*/
636	+	static void delay(long millis) throws InterruptedException {
637	+	long startTime = System.nanoTime();
638	+	long ns = millis * 1000 * 1000;
639	+	for (;;) {
640	+	if (millis > 0L)
641	+	Thread.sleep(millis);
642	+	else // too short to sleep
643	+	Thread.yield();
644	+	long d = ns - (System.nanoTime() - startTime);
645	+	if (d > 0L)
646	+	millis = d / (1000 * 1000);
647	+	else
648	+	break;
649	+	}
650	+	}
651	+
652	+	/**
653		* Waits out termination of a thread pool or fails doing so.
654		*/
655	<	public void joinPool(ExecutorService exec) {
655	>	void joinPool(ExecutorService exec) {
656		try {
657		exec.shutdown();
658	<	assertTrue("ExecutorService did not terminate in a timely manner",
659	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
658	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
659	>	fail("ExecutorService " + exec +
660	>	" did not terminate in a timely manner");
661		} catch (SecurityException ok) {
662		// Allowed in case test doesn't have privs
663	<	} catch (InterruptedException ie) {
663	>	} catch (InterruptedException fail) {
664		fail("Unexpected InterruptedException");
665		}
666		}
667
668	+	/**
669	+	* A debugging tool to print all stack traces, as jstack does.
670	+	*/
671	+	static void printAllStackTraces() {
672	+	for (ThreadInfo info :
673	+	ManagementFactory.getThreadMXBean()
674	+	.dumpAllThreads(true, true))
675	+	System.err.print(info);
676	+	}
677	+
678	+	/**
679	+	* Checks that thread does not terminate within the default
680	+	* millisecond delay of {@code timeoutMillis()}.
681	+	*/
682	+	void assertThreadStaysAlive(Thread thread) {
683	+	assertThreadStaysAlive(thread, timeoutMillis());
684	+	}
685	+
686	+	/**
687	+	* Checks that thread does not terminate within the given millisecond delay.
688	+	*/
689	+	void assertThreadStaysAlive(Thread thread, long millis) {
690	+	try {
691	+	// No need to optimize the failing case via Thread.join.
692	+	delay(millis);
693	+	assertTrue(thread.isAlive());
694	+	} catch (InterruptedException fail) {
695	+	fail("Unexpected InterruptedException");
696	+	}
697	+	}
698	+
699	+	/**
700	+	* Checks that the threads do not terminate within the default
701	+	* millisecond delay of {@code timeoutMillis()}.
702	+	*/
703	+	void assertThreadsStayAlive(Thread... threads) {
704	+	assertThreadsStayAlive(timeoutMillis(), threads);
705	+	}
706	+
707	+	/**
708	+	* Checks that the threads do not terminate within the given millisecond delay.
709	+	*/
710	+	void assertThreadsStayAlive(long millis, Thread... threads) {
711	+	try {
712	+	// No need to optimize the failing case via Thread.join.
713	+	delay(millis);
714	+	for (Thread thread : threads)
715	+	assertTrue(thread.isAlive());
716	+	} catch (InterruptedException fail) {
717	+	fail("Unexpected InterruptedException");
718	+	}
719	+	}
720	+
721	+	/**
722	+	* Checks that future.get times out, with the default timeout of
723	+	* {@code timeoutMillis()}.
724	+	*/
725	+	void assertFutureTimesOut(Future future) {
726	+	assertFutureTimesOut(future, timeoutMillis());
727	+	}
728	+
729	+	/**
730	+	* Checks that future.get times out, with the given millisecond timeout.
731	+	*/
732	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
733	+	long startTime = System.nanoTime();
734	+	try {
735	+	future.get(timeoutMillis, MILLISECONDS);
736	+	shouldThrow();
737	+	} catch (TimeoutException success) {
738	+	} catch (Exception fail) {
739	+	threadUnexpectedException(fail);
740	+	} finally { future.cancel(true); }
741	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
742	+	}
743
744		/**
745		* Fails with message "should throw exception".
#	Line 448 | Line 780 | public class JSR166TestCase extends Test
780		public static final Integer m6  = new Integer(-6);
781		public static final Integer m10 = new Integer(-10);
782
451	–
783		/**
784		* Runs Runnable r with a security policy that permits precisely
785		* the specified permissions.  If there is no current security
#	Line 460 | Line 791 | public class JSR166TestCase extends Test
791		SecurityManager sm = System.getSecurityManager();
792		if (sm == null) {
793		r.run();
794	+	}
795	+	runWithSecurityManagerWithPermissions(r, permissions);
796	+	}
797	+
798	+	/**
799	+	* Runs Runnable r with a security policy that permits precisely
800	+	* the specified permissions.  If there is no current security
801	+	* manager, a temporary one is set for the duration of the
802	+	* Runnable.  We require that any security manager permit
803	+	* getPolicy/setPolicy.
804	+	*/
805	+	public void runWithSecurityManagerWithPermissions(Runnable r,
806	+	Permission... permissions) {
807	+	SecurityManager sm = System.getSecurityManager();
808	+	if (sm == null) {
809		Policy savedPolicy = Policy.getPolicy();
810		try {
811		Policy.setPolicy(permissivePolicy());
812		System.setSecurityManager(new SecurityManager());
813	<	runWithPermissions(r, permissions);
813	>	runWithSecurityManagerWithPermissions(r, permissions);
814		} finally {
815		System.setSecurityManager(null);
816		Policy.setPolicy(savedPolicy);
#	Line 512 | Line 858 | public class JSR166TestCase extends Test
858		return perms.implies(p);
859		}
860		public void refresh() {}
861	+	public String toString() {
862	+	List<Permission> ps = new ArrayList<Permission>();
863	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
864	+	ps.add(e.nextElement());
865	+	return "AdjustablePolicy with permissions " + ps;
866	+	}
867		}
868
869		/**
#	Line 534 | Line 886 | public class JSR166TestCase extends Test
886		}
887
888		/**
889	<	* Sleep until the timeout has elapsed, or interrupted.
890	<	* Does <em>NOT</em> throw InterruptedException.
889	>	* Sleeps until the given time has elapsed.
890	>	* Throws AssertionFailedError if interrupted.
891	>	*/
892	>	void sleep(long millis) {
893	>	try {
894	>	delay(millis);
895	>	} catch (InterruptedException fail) {
896	>	AssertionFailedError afe =
897	>	new AssertionFailedError("Unexpected InterruptedException");
898	>	afe.initCause(fail);
899	>	throw afe;
900	>	}
901	>	}
902	>
903	>	/**
904	>	* Spin-waits up to the specified number of milliseconds for the given
905	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
906	>	*/
907	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
908	>	long startTime = System.nanoTime();
909	>	for (;;) {
910	>	Thread.State s = thread.getState();
911	>	if (s == Thread.State.BLOCKED ||
912	>	s == Thread.State.WAITING ||
913	>	s == Thread.State.TIMED_WAITING)
914	>	return;
915	>	else if (s == Thread.State.TERMINATED)
916	>	fail("Unexpected thread termination");
917	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
918	>	threadAssertTrue(thread.isAlive());
919	>	return;
920	>	}
921	>	Thread.yield();
922	>	}
923	>	}
924	>
925	>	/**
926	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
927	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
928	>	*/
929	>	void waitForThreadToEnterWaitState(Thread thread) {
930	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
931	>	}
932	>
933	>	/**
934	>	* Returns the number of milliseconds since time given by
935	>	* startNanoTime, which must have been previously returned from a
936	>	* call to {@link System#nanoTime()}.
937	>	*/
938	>	static long millisElapsedSince(long startNanoTime) {
939	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
940	>	}
941	>
942	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
943	>	//         long startTime = System.nanoTime();
944	>	//         try {
945	>	//             r.run();
946	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
947	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
948	>	//             throw new AssertionFailedError("did not return promptly");
949	>	//     }
950	>
951	>	//     void assertTerminatesPromptly(Runnable r) {
952	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
953	>	//     }
954	>
955	>	/**
956	>	* Checks that timed f.get() returns the expected value, and does not
957	>	* wait for the timeout to elapse before returning.
958		*/
959	<	void sleepTillInterrupted(long timeoutMillis) {
959	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
960	>	long startTime = System.nanoTime();
961		try {
962	<	Thread.sleep(timeoutMillis);
963	<	} catch (InterruptedException wakeup) {}
962	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
963	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
964	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
965	>	throw new AssertionFailedError("timed get did not return promptly");
966	>	}
967	>
968	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
969	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
970		}
971
972		/**
973	<	* Returns a new started Thread running the given runnable.
973	>	* Returns a new started daemon Thread running the given runnable.
974		*/
975		Thread newStartedThread(Runnable runnable) {
976		Thread t = new Thread(runnable);
977	+	t.setDaemon(true);
978		t.start();
979		return t;
980		}
981
982	+	/**
983	+	* Waits for the specified time (in milliseconds) for the thread
984	+	* to terminate (using {@link Thread#join(long)}), else interrupts
985	+	* the thread (in the hope that it may terminate later) and fails.
986	+	*/
987	+	void awaitTermination(Thread t, long timeoutMillis) {
988	+	try {
989	+	t.join(timeoutMillis);
990	+	} catch (InterruptedException fail) {
991	+	threadUnexpectedException(fail);
992	+	} finally {
993	+	if (t.getState() != Thread.State.TERMINATED) {
994	+	t.interrupt();
995	+	fail("Test timed out");
996	+	}
997	+	}
998	+	}
999	+
1000	+	/**
1001	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1002	+	* terminate (using {@link Thread#join(long)}), else interrupts
1003	+	* the thread (in the hope that it may terminate later) and fails.
1004	+	*/
1005	+	void awaitTermination(Thread t) {
1006	+	awaitTermination(t, LONG_DELAY_MS);
1007	+	}
1008	+
1009		// Some convenient Runnable classes
1010
1011		public abstract class CheckedRunnable implements Runnable {
#	Line 560 | Line 1014 | public class JSR166TestCase extends Test
1014		public final void run() {
1015		try {
1016		realRun();
1017	<	} catch (Throwable t) {
1018	<	threadUnexpectedException(t);
1017	>	} catch (Throwable fail) {
1018	>	threadUnexpectedException(fail);
1019		}
1020		}
1021		}
#	Line 614 | Line 1068 | public class JSR166TestCase extends Test
1068		realRun();
1069		threadShouldThrow("InterruptedException");
1070		} catch (InterruptedException success) {
1071	<	} catch (Throwable t) {
1072	<	threadUnexpectedException(t);
1071	>	threadAssertFalse(Thread.interrupted());
1072	>	} catch (Throwable fail) {
1073	>	threadUnexpectedException(fail);
1074		}
1075		}
1076		}
#	Line 626 | Line 1081 | public class JSR166TestCase extends Test
1081		public final T call() {
1082		try {
1083		return realCall();
1084	<	} catch (Throwable t) {
1085	<	threadUnexpectedException(t);
1084	>	} catch (Throwable fail) {
1085	>	threadUnexpectedException(fail);
1086		return null;
1087		}
1088		}
#	Line 643 | Line 1098 | public class JSR166TestCase extends Test
1098		threadShouldThrow("InterruptedException");
1099		return result;
1100		} catch (InterruptedException success) {
1101	<	} catch (Throwable t) {
1102	<	threadUnexpectedException(t);
1101	>	threadAssertFalse(Thread.interrupted());
1102	>	} catch (Throwable fail) {
1103	>	threadUnexpectedException(fail);
1104		}
1105		return null;
1106		}
#	Line 666 | Line 1122 | public class JSR166TestCase extends Test
1122
1123		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1124		return new CheckedCallable<String>() {
1125	<	public String realCall() {
1125	>	protected String realCall() {
1126		try {
1127		latch.await();
1128		} catch (InterruptedException quittingTime) {}
#	Line 674 | Line 1130 | public class JSR166TestCase extends Test
1130		}};
1131		}
1132
1133	+	public Runnable awaiter(final CountDownLatch latch) {
1134	+	return new CheckedRunnable() {
1135	+	public void realRun() throws InterruptedException {
1136	+	await(latch);
1137	+	}};
1138	+	}
1139	+
1140	+	public void await(CountDownLatch latch) {
1141	+	try {
1142	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1143	+	} catch (Throwable fail) {
1144	+	threadUnexpectedException(fail);
1145	+	}
1146	+	}
1147	+
1148	+	public void await(Semaphore semaphore) {
1149	+	try {
1150	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1151	+	} catch (Throwable fail) {
1152	+	threadUnexpectedException(fail);
1153	+	}
1154	+	}
1155	+
1156	+	//     /**
1157	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1158	+	//      */
1159	+	//     public void await(AtomicBoolean flag) {
1160	+	//         await(flag, LONG_DELAY_MS);
1161	+	//     }
1162	+
1163	+	//     /**
1164	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1165	+	//      */
1166	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1167	+	//         long startTime = System.nanoTime();
1168	+	//         while (!flag.get()) {
1169	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1170	+	//                 throw new AssertionFailedError("timed out");
1171	+	//             Thread.yield();
1172	+	//         }
1173	+	//     }
1174	+
1175		public static class NPETask implements Callable<String> {
1176		public String call() { throw new NullPointerException(); }
1177		}
#	Line 684 | Line 1182 | public class JSR166TestCase extends Test
1182
1183		public class ShortRunnable extends CheckedRunnable {
1184		protected void realRun() throws Throwable {
1185	<	Thread.sleep(SHORT_DELAY_MS);
1185	>	delay(SHORT_DELAY_MS);
1186		}
1187		}
1188
1189		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1190		protected void realRun() throws InterruptedException {
1191	<	Thread.sleep(SHORT_DELAY_MS);
1191	>	delay(SHORT_DELAY_MS);
1192		}
1193		}
1194
1195		public class SmallRunnable extends CheckedRunnable {
1196		protected void realRun() throws Throwable {
1197	<	Thread.sleep(SMALL_DELAY_MS);
1197	>	delay(SMALL_DELAY_MS);
1198		}
1199		}
1200
1201		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1202		protected void realRun() {
1203		try {
1204	<	Thread.sleep(SMALL_DELAY_MS);
1204	>	delay(SMALL_DELAY_MS);
1205		} catch (InterruptedException ok) {}
1206		}
1207		}
1208
1209		public class SmallCallable extends CheckedCallable {
1210		protected Object realCall() throws InterruptedException {
1211	<	Thread.sleep(SMALL_DELAY_MS);
1211	>	delay(SMALL_DELAY_MS);
1212		return Boolean.TRUE;
1213		}
1214		}
1215
1216		public class MediumRunnable extends CheckedRunnable {
1217		protected void realRun() throws Throwable {
1218	<	Thread.sleep(MEDIUM_DELAY_MS);
1218	>	delay(MEDIUM_DELAY_MS);
1219		}
1220		}
1221
1222		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1223		protected void realRun() throws InterruptedException {
1224	<	Thread.sleep(MEDIUM_DELAY_MS);
1224	>	delay(MEDIUM_DELAY_MS);
1225		}
1226		}
1227
1228	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1229	+	return new CheckedRunnable() {
1230	+	protected void realRun() {
1231	+	try {
1232	+	delay(timeoutMillis);
1233	+	} catch (InterruptedException ok) {}
1234	+	}};
1235	+	}
1236	+
1237		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1238		protected void realRun() {
1239		try {
1240	<	Thread.sleep(MEDIUM_DELAY_MS);
1240	>	delay(MEDIUM_DELAY_MS);
1241		} catch (InterruptedException ok) {}
1242		}
1243		}
#	Line 738 | Line 1245 | public class JSR166TestCase extends Test
1245		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1246		protected void realRun() {
1247		try {
1248	<	Thread.sleep(LONG_DELAY_MS);
1248	>	delay(LONG_DELAY_MS);
1249		} catch (InterruptedException ok) {}
1250		}
1251		}
#	Line 752 | Line 1259 | public class JSR166TestCase extends Test
1259		}
1260		}
1261
1262	+	public interface TrackedRunnable extends Runnable {
1263	+	boolean isDone();
1264	+	}
1265	+
1266	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1267	+	return new TrackedRunnable() {
1268	+	private volatile boolean done = false;
1269	+	public boolean isDone() { return done; }
1270	+	public void run() {
1271	+	try {
1272	+	delay(timeoutMillis);
1273	+	done = true;
1274	+	} catch (InterruptedException ok) {}
1275	+	}
1276	+	};
1277	+	}
1278	+
1279		public static class TrackedShortRunnable implements Runnable {
1280		public volatile boolean done = false;
1281		public void run() {
1282		try {
1283	<	Thread.sleep(SMALL_DELAY_MS);
1283	>	delay(SHORT_DELAY_MS);
1284	>	done = true;
1285	>	} catch (InterruptedException ok) {}
1286	>	}
1287	>	}
1288	>
1289	>	public static class TrackedSmallRunnable implements Runnable {
1290	>	public volatile boolean done = false;
1291	>	public void run() {
1292	>	try {
1293	>	delay(SMALL_DELAY_MS);
1294		done = true;
1295		} catch (InterruptedException ok) {}
1296		}
#	Line 766 | Line 1300 | public class JSR166TestCase extends Test
1300		public volatile boolean done = false;
1301		public void run() {
1302		try {
1303	<	Thread.sleep(MEDIUM_DELAY_MS);
1303	>	delay(MEDIUM_DELAY_MS);
1304		done = true;
1305		} catch (InterruptedException ok) {}
1306		}
#	Line 776 | Line 1310 | public class JSR166TestCase extends Test
1310		public volatile boolean done = false;
1311		public void run() {
1312		try {
1313	<	Thread.sleep(LONG_DELAY_MS);
1313	>	delay(LONG_DELAY_MS);
1314		done = true;
1315		} catch (InterruptedException ok) {}
1316		}
#	Line 793 | Line 1327 | public class JSR166TestCase extends Test
1327		public volatile boolean done = false;
1328		public Object call() {
1329		try {
1330	<	Thread.sleep(SMALL_DELAY_MS);
1330	>	delay(SMALL_DELAY_MS);
1331		done = true;
1332		} catch (InterruptedException ok) {}
1333		return Boolean.TRUE;
#	Line 806 | Line 1340 | public class JSR166TestCase extends Test
1340		public abstract class CheckedRecursiveAction extends RecursiveAction {
1341		protected abstract void realCompute() throws Throwable;
1342
1343	<	public final void compute() {
1343	>	@Override protected final void compute() {
1344		try {
1345		realCompute();
1346	<	} catch (Throwable t) {
1347	<	threadUnexpectedException(t);
1346	>	} catch (Throwable fail) {
1347	>	threadUnexpectedException(fail);
1348		}
1349		}
1350		}
#	Line 821 | Line 1355 | public class JSR166TestCase extends Test
1355		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1356		protected abstract T realCompute() throws Throwable;
1357
1358	<	public final T compute() {
1358	>	@Override protected final T compute() {
1359		try {
1360		return realCompute();
1361	<	} catch (Throwable t) {
1362	<	threadUnexpectedException(t);
1361	>	} catch (Throwable fail) {
1362	>	threadUnexpectedException(fail);
1363		return null;
1364		}
1365		}
#	Line 839 | Line 1373 | public class JSR166TestCase extends Test
1373		ThreadPoolExecutor executor) {}
1374		}
1375
1376	+	/**
1377	+	* A CyclicBarrier that uses timed await and fails with
1378	+	* AssertionFailedErrors instead of throwing checked exceptions.
1379	+	*/
1380	+	public class CheckedBarrier extends CyclicBarrier {
1381	+	public CheckedBarrier(int parties) { super(parties); }
1382	+
1383	+	public int await() {
1384	+	try {
1385	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1386	+	} catch (TimeoutException timedOut) {
1387	+	throw new AssertionFailedError("timed out");
1388	+	} catch (Exception fail) {
1389	+	AssertionFailedError afe =
1390	+	new AssertionFailedError("Unexpected exception: " + fail);
1391	+	afe.initCause(fail);
1392	+	throw afe;
1393	+	}
1394	+	}
1395	+	}
1396	+
1397	+	void checkEmpty(BlockingQueue q) {
1398	+	try {
1399	+	assertTrue(q.isEmpty());
1400	+	assertEquals(0, q.size());
1401	+	assertNull(q.peek());
1402	+	assertNull(q.poll());
1403	+	assertNull(q.poll(0, MILLISECONDS));
1404	+	assertEquals(q.toString(), "[]");
1405	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1406	+	assertFalse(q.iterator().hasNext());
1407	+	try {
1408	+	q.element();
1409	+	shouldThrow();
1410	+	} catch (NoSuchElementException success) {}
1411	+	try {
1412	+	q.iterator().next();
1413	+	shouldThrow();
1414	+	} catch (NoSuchElementException success) {}
1415	+	try {
1416	+	q.remove();
1417	+	shouldThrow();
1418	+	} catch (NoSuchElementException success) {}
1419	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1420	+	}
1421	+
1422	+	void assertSerialEquals(Object x, Object y) {
1423	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1424	+	}
1425	+
1426	+	void assertNotSerialEquals(Object x, Object y) {
1427	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1428	+	}
1429	+
1430	+	byte[] serialBytes(Object o) {
1431	+	try {
1432	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1433	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1434	+	oos.writeObject(o);
1435	+	oos.flush();
1436	+	oos.close();
1437	+	return bos.toByteArray();
1438	+	} catch (Throwable fail) {
1439	+	threadUnexpectedException(fail);
1440	+	return new byte[0];
1441	+	}
1442	+	}
1443	+
1444	+	@SuppressWarnings("unchecked")
1445	+	<T> T serialClone(T o) {
1446	+	try {
1447	+	ObjectInputStream ois = new ObjectInputStream
1448	+	(new ByteArrayInputStream(serialBytes(o)));
1449	+	T clone = (T) ois.readObject();
1450	+	assertSame(o.getClass(), clone.getClass());
1451	+	return clone;
1452	+	} catch (Throwable fail) {
1453	+	threadUnexpectedException(fail);
1454	+	return null;
1455	+	}
1456	+	}
1457	+
1458	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1459	+	Runnable... throwingActions) {
1460	+	for (Runnable throwingAction : throwingActions) {
1461	+	boolean threw = false;
1462	+	try { throwingAction.run(); }
1463	+	catch (Throwable t) {
1464	+	threw = true;
1465	+	if (!expectedExceptionClass.isInstance(t)) {
1466	+	AssertionFailedError afe =
1467	+	new AssertionFailedError
1468	+	("Expected " + expectedExceptionClass.getName() +
1469	+	", got " + t.getClass().getName());
1470	+	afe.initCause(t);
1471	+	threadUnexpectedException(afe);
1472	+	}
1473	+	}
1474	+	if (!threw)
1475	+	shouldThrow(expectedExceptionClass.getName());
1476	+	}
1477	+	}
1478	+
1479	+	public void assertIteratorExhausted(Iterator<?> it) {
1480	+	try {
1481	+	it.next();
1482	+	shouldThrow();
1483	+	} catch (NoSuchElementException success) {}
1484	+	assertFalse(it.hasNext());
1485	+	}
1486		}

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