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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.48 by jsr166, Tue Dec 1 22:51:44 2009 UTC vs.
Revision 1.96 by jsr166, Mon Jan 21 19:51:46 2013 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.*;
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.util.ArrayList;
17	>	import java.util.Arrays;
18	>	import java.util.Date;
19	>	import java.util.Enumeration;
20	>	import java.util.List;
21	>	import java.util.NoSuchElementException;
22	>	import java.util.PropertyPermission;
23		import java.util.concurrent.*;
24	+	import java.util.concurrent.atomic.AtomicBoolean;
25	+	import java.util.concurrent.atomic.AtomicReference;
26		import static java.util.concurrent.TimeUnit.MILLISECONDS;
27	<	import java.io.*;
28	<	import java.security.*;
27	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
28	>	import java.security.CodeSource;
29	>	import java.security.Permission;
30	>	import java.security.PermissionCollection;
31	>	import java.security.Permissions;
32	>	import java.security.Policy;
33	>	import java.security.ProtectionDomain;
34	>	import java.security.SecurityPermission;
35
36		/**
37		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 26 | Line 46 | import java.security.*;
46		* <li> All assertions in code running in generated threads must use
47		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
48		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
49	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
49	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
50		* particularly recommended) for other code to use these forms too.
51		* Only the most typically used JUnit assertion methods are defined
52		* this way, but enough to live with.</li>
53		*
54		* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
55	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
55	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
56		* them. These methods are used to clear and check for thread
57		* assertion failures.</li>
58		*
59	<	* <li>All delays and timeouts must use one of the constants <tt>
60	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
61	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
59	>	* <li>All delays and timeouts must use one of the constants {@code
60	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
61	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
62		* discriminable from zero time, and always allows enough time for the
63		* small amounts of computation (creating a thread, calling a few
64		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
#	Line 48 | Line 68 | import java.security.*;
68		* in one spot to rerun tests on slower platforms.</li>
69		*
70		* <li> All threads generated must be joined inside each test case
71	<	* method (or <tt>fail</tt> to do so) before returning from the
72	<	* method. The <tt> joinPool</tt> method can be used to do this when
71	>	* method (or {@code fail} to do so) before returning from the
72	>	* method. The {@code joinPool} method can be used to do this when
73		* using Executors.</li>
74		*
75		* </ol>
76		*
77	<	* <p> <b>Other notes</b>
77	>	* <p><b>Other notes</b>
78		* <ul>
79		*
80		* <li> Usually, there is one testcase method per JSR166 method
#	Line 81 | Line 101 | import java.security.*;
101		* any particular package to simplify things for people integrating
102		* them in TCK test suites.</li>
103		*
104	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
104	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
105		* runs all JSR166 unit tests.</li>
106		*
107		* </ul>
108		*/
109		public class JSR166TestCase extends TestCase {
110	+	private static final boolean useSecurityManager =
111	+	Boolean.getBoolean("jsr166.useSecurityManager");
112	+
113	+	protected static final boolean expensiveTests =
114	+	Boolean.getBoolean("jsr166.expensiveTests");
115	+
116	+	/**
117	+	* If true, report on stdout all "slow" tests, that is, ones that
118	+	* take more than profileThreshold milliseconds to execute.
119	+	*/
120	+	private static final boolean profileTests =
121	+	Boolean.getBoolean("jsr166.profileTests");
122	+
123	+	/**
124	+	* The number of milliseconds that tests are permitted for
125	+	* execution without being reported, when profileTests is set.
126	+	*/
127	+	private static final long profileThreshold =
128	+	Long.getLong("jsr166.profileThreshold", 100);
129	+
130	+	protected void runTest() throws Throwable {
131	+	if (profileTests)
132	+	runTestProfiled();
133	+	else
134	+	super.runTest();
135	+	}
136	+
137	+	protected void runTestProfiled() throws Throwable {
138	+	long t0 = System.nanoTime();
139	+	try {
140	+	super.runTest();
141	+	} finally {
142	+	long elapsedMillis =
143	+	(System.nanoTime() - t0) / (1000L * 1000L);
144	+	if (elapsedMillis >= profileThreshold)
145	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
146	+	}
147	+	}
148	+
149		/**
150	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
150	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
151	>	* Optional command line arg provides the number of iterations to
152	>	* repeat running the tests.
153		*/
154		public static void main(String[] args) {
155	<	int iters = 1;
156	<	if (args.length > 0)
157	<	iters = Integer.parseInt(args[0]);
155	>	if (useSecurityManager) {
156	>	System.err.println("Setting a permissive security manager");
157	>	Policy.setPolicy(permissivePolicy());
158	>	System.setSecurityManager(new SecurityManager());
159	>	}
160	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
161	>
162		Test s = suite();
163		for (int i = 0; i < iters; ++i) {
164		junit.textui.TestRunner.run(s);
#	Line 103 | Line 168 | public class JSR166TestCase extends Test
168		System.exit(0);
169		}
170
171	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
172	+	TestSuite suite = new TestSuite();
173	+	for (Object suiteOrClass : suiteOrClasses) {
174	+	if (suiteOrClass instanceof TestSuite)
175	+	suite.addTest((TestSuite) suiteOrClass);
176	+	else if (suiteOrClass instanceof Class)
177	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
178	+	else
179	+	throw new ClassCastException("not a test suite or class");
180	+	}
181	+	return suite;
182	+	}
183	+
184		/**
185	<	* Collects all JSR166 unit tests as one suite
185	>	* Collects all JSR166 unit tests as one suite.
186		*/
187		public static Test suite() {
188	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
189	<
190	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
191	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
192	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
193	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
194	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
195	<	suite.addTest(new TestSuite(PhaserTest.class));
196	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
197	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
198	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
199	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
200	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
201	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
202	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
203	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
204	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
205	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
206	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
207	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
208	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
209	<	suite.addTest(new TestSuite(AtomicLongTest.class));
210	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
211	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
212	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
213	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
214	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
215	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
216	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
217	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
218	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
219	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
220	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
221	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
222	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
223	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
224	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
225	<	suite.addTest(new TestSuite(DelayQueueTest.class));
226	<	suite.addTest(new TestSuite(EntryTest.class));
227	<	suite.addTest(new TestSuite(ExchangerTest.class));
228	<	suite.addTest(new TestSuite(ExecutorsTest.class));
229	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
230	<	suite.addTest(new TestSuite(FutureTaskTest.class));
231	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
232	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
233	<	suite.addTest(new TestSuite(LinkedListTest.class));
234	<	suite.addTest(new TestSuite(LockSupportTest.class));
235	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
236	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
237	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
238	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
239	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
240	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
241	<	suite.addTest(new TestSuite(SemaphoreTest.class));
242	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
243	<	suite.addTest(new TestSuite(SystemTest.class));
244	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
245	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
246	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
247	<	suite.addTest(new TestSuite(ThreadTest.class));
248	<	suite.addTest(new TestSuite(TimeUnitTest.class));
249	<	suite.addTest(new TestSuite(TreeMapTest.class));
250	<	suite.addTest(new TestSuite(TreeSetTest.class));
251	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
252	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
175	<
176	<	return suite;
188	>	return newTestSuite(
189	>	ForkJoinPoolTest.suite(),
190	>	ForkJoinTaskTest.suite(),
191	>	RecursiveActionTest.suite(),
192	>	RecursiveTaskTest.suite(),
193	>	LinkedTransferQueueTest.suite(),
194	>	PhaserTest.suite(),
195	>	ThreadLocalRandomTest.suite(),
196	>	AbstractExecutorServiceTest.suite(),
197	>	AbstractQueueTest.suite(),
198	>	AbstractQueuedSynchronizerTest.suite(),
199	>	AbstractQueuedLongSynchronizerTest.suite(),
200	>	ArrayBlockingQueueTest.suite(),
201	>	ArrayDequeTest.suite(),
202	>	AtomicBooleanTest.suite(),
203	>	AtomicIntegerArrayTest.suite(),
204	>	AtomicIntegerFieldUpdaterTest.suite(),
205	>	AtomicIntegerTest.suite(),
206	>	AtomicLongArrayTest.suite(),
207	>	AtomicLongFieldUpdaterTest.suite(),
208	>	AtomicLongTest.suite(),
209	>	AtomicMarkableReferenceTest.suite(),
210	>	AtomicReferenceArrayTest.suite(),
211	>	AtomicReferenceFieldUpdaterTest.suite(),
212	>	AtomicReferenceTest.suite(),
213	>	AtomicStampedReferenceTest.suite(),
214	>	ConcurrentHashMapTest.suite(),
215	>	ConcurrentLinkedDequeTest.suite(),
216	>	ConcurrentLinkedQueueTest.suite(),
217	>	ConcurrentSkipListMapTest.suite(),
218	>	ConcurrentSkipListSubMapTest.suite(),
219	>	ConcurrentSkipListSetTest.suite(),
220	>	ConcurrentSkipListSubSetTest.suite(),
221	>	CopyOnWriteArrayListTest.suite(),
222	>	CopyOnWriteArraySetTest.suite(),
223	>	CountDownLatchTest.suite(),
224	>	CyclicBarrierTest.suite(),
225	>	DelayQueueTest.suite(),
226	>	EntryTest.suite(),
227	>	ExchangerTest.suite(),
228	>	ExecutorsTest.suite(),
229	>	ExecutorCompletionServiceTest.suite(),
230	>	FutureTaskTest.suite(),
231	>	LinkedBlockingDequeTest.suite(),
232	>	LinkedBlockingQueueTest.suite(),
233	>	LinkedListTest.suite(),
234	>	LockSupportTest.suite(),
235	>	PriorityBlockingQueueTest.suite(),
236	>	PriorityQueueTest.suite(),
237	>	ReentrantLockTest.suite(),
238	>	ReentrantReadWriteLockTest.suite(),
239	>	ScheduledExecutorTest.suite(),
240	>	ScheduledExecutorSubclassTest.suite(),
241	>	SemaphoreTest.suite(),
242	>	SynchronousQueueTest.suite(),
243	>	SystemTest.suite(),
244	>	ThreadLocalTest.suite(),
245	>	ThreadPoolExecutorTest.suite(),
246	>	ThreadPoolExecutorSubclassTest.suite(),
247	>	ThreadTest.suite(),
248	>	TimeUnitTest.suite(),
249	>	TreeMapTest.suite(),
250	>	TreeSetTest.suite(),
251	>	TreeSubMapTest.suite(),
252	>	TreeSubSetTest.suite());
253		}
254
255
#	Line 191 | Line 267 | public class JSR166TestCase extends Test
267		return 50;
268		}
269
194	–
270		/**
271		* Sets delays as multiples of SHORT_DELAY.
272		*/
273		protected void setDelays() {
274		SHORT_DELAY_MS = getShortDelay();
275	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
275	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
276		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
277	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
277	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
278		}
279
280		/**
281	<	* Flag set true if any threadAssert methods fail
281	>	* Returns a timeout in milliseconds to be used in tests that
282	>	* verify that operations block or time out.
283		*/
284	<	volatile boolean threadFailed;
284	>	long timeoutMillis() {
285	>	return SHORT_DELAY_MS / 4;
286	>	}
287
288		/**
289	<	* Initializes test to indicate that no thread assertions have failed
289	>	* Returns a new Date instance representing a time delayMillis
290	>	* milliseconds in the future.
291		*/
292	+	Date delayedDate(long delayMillis) {
293	+	return new Date(System.currentTimeMillis() + delayMillis);
294	+	}
295	+
296	+	/**
297	+	* The first exception encountered if any threadAssertXXX method fails.
298	+	*/
299	+	private final AtomicReference<Throwable> threadFailure
300	+	= new AtomicReference<Throwable>(null);
301	+
302	+	/**
303	+	* Records an exception so that it can be rethrown later in the test
304	+	* harness thread, triggering a test case failure.  Only the first
305	+	* failure is recorded; subsequent calls to this method from within
306	+	* the same test have no effect.
307	+	*/
308	+	public void threadRecordFailure(Throwable t) {
309	+	threadFailure.compareAndSet(null, t);
310	+	}
311	+
312		public void setUp() {
313		setDelays();
215	–	threadFailed = false;
314		}
315
316		/**
317	<	* Triggers test case failure if any thread assertions have failed
318	<	*/
319	<	public void tearDown() {
320	<	assertFalse(threadFailed);
317	>	* Extra checks that get done for all test cases.
318	>	*
319	>	* Triggers test case failure if any thread assertions have failed,
320	>	* by rethrowing, in the test harness thread, any exception recorded
321	>	* earlier by threadRecordFailure.
322	>	*
323	>	* Triggers test case failure if interrupt status is set in the main thread.
324	>	*/
325	>	public void tearDown() throws Exception {
326	>	Throwable t = threadFailure.getAndSet(null);
327	>	if (t != null) {
328	>	if (t instanceof Error)
329	>	throw (Error) t;
330	>	else if (t instanceof RuntimeException)
331	>	throw (RuntimeException) t;
332	>	else if (t instanceof Exception)
333	>	throw (Exception) t;
334	>	else {
335	>	AssertionFailedError afe =
336	>	new AssertionFailedError(t.toString());
337	>	afe.initCause(t);
338	>	throw afe;
339	>	}
340	>	}
341	>
342	>	if (Thread.interrupted())
343	>	throw new AssertionFailedError("interrupt status set in main thread");
344		}
345
346		/**
347	<	* Fail, also setting status to indicate current testcase should fail
347	>	* Just like fail(reason), but additionally recording (using
348	>	* threadRecordFailure) any AssertionFailedError thrown, so that
349	>	* the current testcase will fail.
350		*/
351		public void threadFail(String reason) {
352	<	threadFailed = true;
353	<	fail(reason);
352	>	try {
353	>	fail(reason);
354	>	} catch (AssertionFailedError t) {
355	>	threadRecordFailure(t);
356	>	fail(reason);
357	>	}
358		}
359
360		/**
361	<	* If expression not true, set status to indicate current testcase
362	<	* should fail
361	>	* Just like assertTrue(b), but additionally recording (using
362	>	* threadRecordFailure) any AssertionFailedError thrown, so that
363	>	* the current testcase will fail.
364		*/
365		public void threadAssertTrue(boolean b) {
366	<	if (!b) {
239	<	threadFailed = true;
366	>	try {
367		assertTrue(b);
368	+	} catch (AssertionFailedError t) {
369	+	threadRecordFailure(t);
370	+	throw t;
371		}
372		}
373
374		/**
375	<	* If expression not false, set status to indicate current testcase
376	<	* should fail
375	>	* Just like assertFalse(b), but additionally recording (using
376	>	* threadRecordFailure) any AssertionFailedError thrown, so that
377	>	* the current testcase will fail.
378		*/
379		public void threadAssertFalse(boolean b) {
380	<	if (b) {
250	<	threadFailed = true;
380	>	try {
381		assertFalse(b);
382	+	} catch (AssertionFailedError t) {
383	+	threadRecordFailure(t);
384	+	throw t;
385		}
386		}
387
388		/**
389	<	* If argument not null, set status to indicate current testcase
390	<	* should fail
389	>	* Just like assertNull(x), but additionally recording (using
390	>	* threadRecordFailure) any AssertionFailedError thrown, so that
391	>	* the current testcase will fail.
392		*/
393		public void threadAssertNull(Object x) {
394	<	if (x != null) {
261	<	threadFailed = true;
394	>	try {
395		assertNull(x);
396	+	} catch (AssertionFailedError t) {
397	+	threadRecordFailure(t);
398	+	throw t;
399		}
400		}
401
402		/**
403	<	* If arguments not equal, set status to indicate current testcase
404	<	* should fail
403	>	* Just like assertEquals(x, y), but additionally recording (using
404	>	* threadRecordFailure) any AssertionFailedError thrown, so that
405	>	* the current testcase will fail.
406		*/
407		public void threadAssertEquals(long x, long y) {
408	<	if (x != y) {
272	<	threadFailed = true;
408	>	try {
409		assertEquals(x, y);
410	+	} catch (AssertionFailedError t) {
411	+	threadRecordFailure(t);
412	+	throw t;
413		}
414		}
415
416		/**
417	<	* If arguments not equal, set status to indicate current testcase
418	<	* should fail
417	>	* Just like assertEquals(x, y), but additionally recording (using
418	>	* threadRecordFailure) any AssertionFailedError thrown, so that
419	>	* the current testcase will fail.
420		*/
421		public void threadAssertEquals(Object x, Object y) {
422	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
422	>	try {
423		assertEquals(x, y);
424	+	} catch (AssertionFailedError t) {
425	+	threadRecordFailure(t);
426	+	throw t;
427	+	} catch (Throwable t) {
428	+	threadUnexpectedException(t);
429		}
430		}
431
432		/**
433	<	* threadFail with message "should throw exception"
433	>	* Just like assertSame(x, y), but additionally recording (using
434	>	* threadRecordFailure) any AssertionFailedError thrown, so that
435	>	* the current testcase will fail.
436	>	*/
437	>	public void threadAssertSame(Object x, Object y) {
438	>	try {
439	>	assertSame(x, y);
440	>	} catch (AssertionFailedError t) {
441	>	threadRecordFailure(t);
442	>	throw t;
443	>	}
444	>	}
445	>
446	>	/**
447	>	* Calls threadFail with message "should throw exception".
448		*/
449		public void threadShouldThrow() {
450	<	threadFailed = true;
293	<	fail("should throw exception");
450	>	threadFail("should throw exception");
451		}
452
453		/**
454	<	* threadFail with message "should throw" + exceptionName
454	>	* Calls threadFail with message "should throw" + exceptionName.
455		*/
456		public void threadShouldThrow(String exceptionName) {
457	<	threadFailed = true;
301	<	fail("should throw " + exceptionName);
457	>	threadFail("should throw " + exceptionName);
458		}
459
460		/**
461	<	* threadFail with message "Unexpected exception"
461	>	* Records the given exception using {@link #threadRecordFailure},
462	>	* then rethrows the exception, wrapping it in an
463	>	* AssertionFailedError if necessary.
464		*/
465	<	public void threadUnexpectedException() {
466	<	threadFailed = true;
467	<	fail("Unexpected exception");
465	>	public void threadUnexpectedException(Throwable t) {
466	>	threadRecordFailure(t);
467	>	t.printStackTrace();
468	>	if (t instanceof RuntimeException)
469	>	throw (RuntimeException) t;
470	>	else if (t instanceof Error)
471	>	throw (Error) t;
472	>	else {
473	>	AssertionFailedError afe =
474	>	new AssertionFailedError("unexpected exception: " + t);
475	>	afe.initCause(t);
476	>	throw afe;
477	>	}
478		}
479
480		/**
481	<	* threadFail with message "Unexpected exception", with argument
481	>	* Delays, via Thread.sleep, for the given millisecond delay, but
482	>	* if the sleep is shorter than specified, may re-sleep or yield
483	>	* until time elapses.
484		*/
485	<	public void threadUnexpectedException(Throwable ex) {
486	<	threadFailed = true;
487	<	ex.printStackTrace();
488	<	fail("Unexpected exception: " + ex);
485	>	static void delay(long millis) throws InterruptedException {
486	>	long startTime = System.nanoTime();
487	>	long ns = millis * 1000 * 1000;
488	>	for (;;) {
489	>	if (millis > 0L)
490	>	Thread.sleep(millis);
491	>	else // too short to sleep
492	>	Thread.yield();
493	>	long d = ns - (System.nanoTime() - startTime);
494	>	if (d > 0L)
495	>	millis = d / (1000 * 1000);
496	>	else
497	>	break;
498	>	}
499		}
500
501		/**
502	<	* Wait out termination of a thread pool or fail doing so
502	>	* Waits out termination of a thread pool or fails doing so.
503		*/
504	<	public void joinPool(ExecutorService exec) {
504	>	void joinPool(ExecutorService exec) {
505		try {
506		exec.shutdown();
507	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
507	>	assertTrue("ExecutorService did not terminate in a timely manner",
508	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
509		} catch (SecurityException ok) {
510		// Allowed in case test doesn't have privs
511		} catch (InterruptedException ie) {
#	Line 332 | Line 513 | public class JSR166TestCase extends Test
513		}
514		}
515
516	+	/**
517	+	* A debugging tool to print all stack traces, as jstack does.
518	+	*/
519	+	static void printAllStackTraces() {
520	+	for (ThreadInfo info :
521	+	ManagementFactory.getThreadMXBean()
522	+	.dumpAllThreads(true, true))
523	+	System.err.print(info);
524	+	}
525
526		/**
527	<	* fail with message "should throw exception"
527	>	* Checks that thread does not terminate within the default
528	>	* millisecond delay of {@code timeoutMillis()}.
529		*/
530	<	public void shouldThrow() {
531	<	fail("Should throw exception");
530	>	void assertThreadStaysAlive(Thread thread) {
531	>	assertThreadStaysAlive(thread, timeoutMillis());
532		}
533
534		/**
535	<	* fail with message "should throw " + exceptionName
535	>	* Checks that thread does not terminate within the given millisecond delay.
536		*/
537	<	public void shouldThrow(String exceptionName) {
538	<	fail("Should throw " + exceptionName);
537	>	void assertThreadStaysAlive(Thread thread, long millis) {
538	>	try {
539	>	// No need to optimize the failing case via Thread.join.
540	>	delay(millis);
541	>	assertTrue(thread.isAlive());
542	>	} catch (InterruptedException ie) {
543	>	fail("Unexpected InterruptedException");
544	>	}
545		}
546
547		/**
548	<	* fail with message "Unexpected exception"
548	>	* Checks that the threads do not terminate within the default
549	>	* millisecond delay of {@code timeoutMillis()}.
550		*/
551	<	public void unexpectedException() {
552	<	fail("Unexpected exception");
551	>	void assertThreadsStayAlive(Thread... threads) {
552	>	assertThreadsStayAlive(timeoutMillis(), threads);
553		}
554
555		/**
556	<	* fail with message "Unexpected exception", with argument
556	>	* Checks that the threads do not terminate within the given millisecond delay.
557		*/
558	<	public void unexpectedException(Throwable ex) {
559	<	ex.printStackTrace();
560	<	fail("Unexpected exception: " + ex);
558	>	void assertThreadsStayAlive(long millis, Thread... threads) {
559	>	try {
560	>	// No need to optimize the failing case via Thread.join.
561	>	delay(millis);
562	>	for (Thread thread : threads)
563	>	assertTrue(thread.isAlive());
564	>	} catch (InterruptedException ie) {
565	>	fail("Unexpected InterruptedException");
566	>	}
567	>	}
568	>
569	>	/**
570	>	* Checks that future.get times out, with the default timeout of
571	>	* {@code timeoutMillis()}.
572	>	*/
573	>	void assertFutureTimesOut(Future future) {
574	>	assertFutureTimesOut(future, timeoutMillis());
575	>	}
576	>
577	>	/**
578	>	* Checks that future.get times out, with the given millisecond timeout.
579	>	*/
580	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
581	>	long startTime = System.nanoTime();
582	>	try {
583	>	future.get(timeoutMillis, MILLISECONDS);
584	>	shouldThrow();
585	>	} catch (TimeoutException success) {
586	>	} catch (Exception e) {
587	>	threadUnexpectedException(e);
588	>	} finally { future.cancel(true); }
589	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
590	>	}
591	>
592	>	/**
593	>	* Fails with message "should throw exception".
594	>	*/
595	>	public void shouldThrow() {
596	>	fail("Should throw exception");
597		}
598
599	+	/**
600	+	* Fails with message "should throw " + exceptionName.
601	+	*/
602	+	public void shouldThrow(String exceptionName) {
603	+	fail("Should throw " + exceptionName);
604	+	}
605
606		/**
607		* The number of elements to place in collections, arrays, etc.
#	Line 390 | Line 630 | public class JSR166TestCase extends Test
630
631
632		/**
633	+	* Runs Runnable r with a security policy that permits precisely
634	+	* the specified permissions.  If there is no current security
635	+	* manager, the runnable is run twice, both with and without a
636	+	* security manager.  We require that any security manager permit
637	+	* getPolicy/setPolicy.
638	+	*/
639	+	public void runWithPermissions(Runnable r, Permission... permissions) {
640	+	SecurityManager sm = System.getSecurityManager();
641	+	if (sm == null) {
642	+	r.run();
643	+	}
644	+	runWithSecurityManagerWithPermissions(r, permissions);
645	+	}
646	+
647	+	/**
648	+	* Runs Runnable r with a security policy that permits precisely
649	+	* the specified permissions.  If there is no current security
650	+	* manager, a temporary one is set for the duration of the
651	+	* Runnable.  We require that any security manager permit
652	+	* getPolicy/setPolicy.
653	+	*/
654	+	public void runWithSecurityManagerWithPermissions(Runnable r,
655	+	Permission... permissions) {
656	+	SecurityManager sm = System.getSecurityManager();
657	+	if (sm == null) {
658	+	Policy savedPolicy = Policy.getPolicy();
659	+	try {
660	+	Policy.setPolicy(permissivePolicy());
661	+	System.setSecurityManager(new SecurityManager());
662	+	runWithSecurityManagerWithPermissions(r, permissions);
663	+	} finally {
664	+	System.setSecurityManager(null);
665	+	Policy.setPolicy(savedPolicy);
666	+	}
667	+	} else {
668	+	Policy savedPolicy = Policy.getPolicy();
669	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
670	+	Policy.setPolicy(policy);
671	+
672	+	try {
673	+	r.run();
674	+	} finally {
675	+	policy.addPermission(new SecurityPermission("setPolicy"));
676	+	Policy.setPolicy(savedPolicy);
677	+	}
678	+	}
679	+	}
680	+
681	+	/**
682	+	* Runs a runnable without any permissions.
683	+	*/
684	+	public void runWithoutPermissions(Runnable r) {
685	+	runWithPermissions(r);
686	+	}
687	+
688	+	/**
689		* A security policy where new permissions can be dynamically added
690		* or all cleared.
691		*/
692		public static class AdjustablePolicy extends java.security.Policy {
693		Permissions perms = new Permissions();
694	<	AdjustablePolicy() { }
694	>	AdjustablePolicy(Permission... permissions) {
695	>	for (Permission permission : permissions)
696	>	perms.add(permission);
697	>	}
698		void addPermission(Permission perm) { perms.add(perm); }
699		void clearPermissions() { perms = new Permissions(); }
700		public PermissionCollection getPermissions(CodeSource cs) {
#	Line 408 | Line 707 | public class JSR166TestCase extends Test
707		return perms.implies(p);
708		}
709		public void refresh() {}
710	+	public String toString() {
711	+	List<Permission> ps = new ArrayList<Permission>();
712	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
713	+	ps.add(e.nextElement());
714	+	return "AdjustablePolicy with permissions " + ps;
715	+	}
716		}
717
718		/**
719	<	* Sleep until the timeout has elapsed, or interrupted.
415	<	* Does <em>NOT</em> throw InterruptedException.
719	>	* Returns a policy containing all the permissions we ever need.
720		*/
721	<	void sleepTillInterrupted(long timeoutMillis) {
721	>	public static Policy permissivePolicy() {
722	>	return new AdjustablePolicy
723	>	// Permissions j.u.c. needs directly
724	>	(new RuntimePermission("modifyThread"),
725	>	new RuntimePermission("getClassLoader"),
726	>	new RuntimePermission("setContextClassLoader"),
727	>	// Permissions needed to change permissions!
728	>	new SecurityPermission("getPolicy"),
729	>	new SecurityPermission("setPolicy"),
730	>	new RuntimePermission("setSecurityManager"),
731	>	// Permissions needed by the junit test harness
732	>	new RuntimePermission("accessDeclaredMembers"),
733	>	new PropertyPermission("*", "read"),
734	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
735	>	}
736	>
737	>	/**
738	>	* Sleeps until the given time has elapsed.
739	>	* Throws AssertionFailedError if interrupted.
740	>	*/
741	>	void sleep(long millis) {
742		try {
743	<	Thread.sleep(timeoutMillis);
744	<	} catch (InterruptedException wakeup) {}
743	>	delay(millis);
744	>	} catch (InterruptedException ie) {
745	>	AssertionFailedError afe =
746	>	new AssertionFailedError("Unexpected InterruptedException");
747	>	afe.initCause(ie);
748	>	throw afe;
749	>	}
750	>	}
751	>
752	>	/**
753	>	* Spin-waits up to the specified number of milliseconds for the given
754	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
755	>	*/
756	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
757	>	long startTime = System.nanoTime();
758	>	for (;;) {
759	>	Thread.State s = thread.getState();
760	>	if (s == Thread.State.BLOCKED ||
761	>	s == Thread.State.WAITING ||
762	>	s == Thread.State.TIMED_WAITING)
763	>	return;
764	>	else if (s == Thread.State.TERMINATED)
765	>	fail("Unexpected thread termination");
766	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
767	>	threadAssertTrue(thread.isAlive());
768	>	return;
769	>	}
770	>	Thread.yield();
771	>	}
772		}
773
774		/**
775	<	* Returns a new started Thread running the given runnable.
775	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
776	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
777	>	*/
778	>	void waitForThreadToEnterWaitState(Thread thread) {
779	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
780	>	}
781	>
782	>	/**
783	>	* Returns the number of milliseconds since time given by
784	>	* startNanoTime, which must have been previously returned from a
785	>	* call to {@link System.nanoTime()}.
786	>	*/
787	>	long millisElapsedSince(long startNanoTime) {
788	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
789	>	}
790	>
791	>	/**
792	>	* Returns a new started daemon Thread running the given runnable.
793		*/
794		Thread newStartedThread(Runnable runnable) {
795		Thread t = new Thread(runnable);
796	+	t.setDaemon(true);
797		t.start();
798		return t;
799		}
800
801	+	/**
802	+	* Waits for the specified time (in milliseconds) for the thread
803	+	* to terminate (using {@link Thread#join(long)}), else interrupts
804	+	* the thread (in the hope that it may terminate later) and fails.
805	+	*/
806	+	void awaitTermination(Thread t, long timeoutMillis) {
807	+	try {
808	+	t.join(timeoutMillis);
809	+	} catch (InterruptedException ie) {
810	+	threadUnexpectedException(ie);
811	+	} finally {
812	+	if (t.getState() != Thread.State.TERMINATED) {
813	+	t.interrupt();
814	+	fail("Test timed out");
815	+	}
816	+	}
817	+	}
818	+
819	+	/**
820	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
821	+	* terminate (using {@link Thread#join(long)}), else interrupts
822	+	* the thread (in the hope that it may terminate later) and fails.
823	+	*/
824	+	void awaitTermination(Thread t) {
825	+	awaitTermination(t, LONG_DELAY_MS);
826	+	}
827	+
828		// Some convenient Runnable classes
829
830		public abstract class CheckedRunnable implements Runnable {
#	Line 491 | Line 887 | public class JSR166TestCase extends Test
887		realRun();
888		threadShouldThrow("InterruptedException");
889		} catch (InterruptedException success) {
890	+	threadAssertFalse(Thread.interrupted());
891		} catch (Throwable t) {
892		threadUnexpectedException(t);
893		}
#	Line 505 | Line 902 | public class JSR166TestCase extends Test
902		return realCall();
903		} catch (Throwable t) {
904		threadUnexpectedException(t);
905	+	return null;
906		}
509	–	return null;
907		}
908		}
909
910	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
910	>	public abstract class CheckedInterruptedCallable<T>
911	>	implements Callable<T> {
912		protected abstract T realCall() throws Throwable;
913
914		public final T call() {
#	Line 519 | Line 917 | public class JSR166TestCase extends Test
917		threadShouldThrow("InterruptedException");
918		return result;
919		} catch (InterruptedException success) {
920	+	threadAssertFalse(Thread.interrupted());
921		} catch (Throwable t) {
922		threadUnexpectedException(t);
923		}
#	Line 542 | Line 941 | public class JSR166TestCase extends Test
941
942		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
943		return new CheckedCallable<String>() {
944	<	public String realCall() {
944	>	protected String realCall() {
945		try {
946		latch.await();
947		} catch (InterruptedException quittingTime) {}
#	Line 550 | Line 949 | public class JSR166TestCase extends Test
949		}};
950		}
951
952	+	public Runnable awaiter(final CountDownLatch latch) {
953	+	return new CheckedRunnable() {
954	+	public void realRun() throws InterruptedException {
955	+	await(latch);
956	+	}};
957	+	}
958	+
959	+	public void await(CountDownLatch latch) {
960	+	try {
961	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
962	+	} catch (Throwable t) {
963	+	threadUnexpectedException(t);
964	+	}
965	+	}
966	+
967	+	public void await(Semaphore semaphore) {
968	+	try {
969	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
970	+	} catch (Throwable t) {
971	+	threadUnexpectedException(t);
972	+	}
973	+	}
974	+
975	+	//     /**
976	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
977	+	//      */
978	+	//     public void await(AtomicBoolean flag) {
979	+	//         await(flag, LONG_DELAY_MS);
980	+	//     }
981	+
982	+	//     /**
983	+	//      * Spin-waits up to the specified timeout until flag becomes true.
984	+	//      */
985	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
986	+	//         long startTime = System.nanoTime();
987	+	//         while (!flag.get()) {
988	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
989	+	//                 throw new AssertionFailedError("timed out");
990	+	//             Thread.yield();
991	+	//         }
992	+	//     }
993	+
994		public static class NPETask implements Callable<String> {
995		public String call() { throw new NullPointerException(); }
996		}
#	Line 560 | Line 1001 | public class JSR166TestCase extends Test
1001
1002		public class ShortRunnable extends CheckedRunnable {
1003		protected void realRun() throws Throwable {
1004	<	Thread.sleep(SHORT_DELAY_MS);
1004	>	delay(SHORT_DELAY_MS);
1005		}
1006		}
1007
1008		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1009		protected void realRun() throws InterruptedException {
1010	<	Thread.sleep(SHORT_DELAY_MS);
1010	>	delay(SHORT_DELAY_MS);
1011		}
1012		}
1013
1014		public class SmallRunnable extends CheckedRunnable {
1015		protected void realRun() throws Throwable {
1016	<	Thread.sleep(SMALL_DELAY_MS);
1016	>	delay(SMALL_DELAY_MS);
1017		}
1018		}
1019
1020		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1021		protected void realRun() {
1022		try {
1023	<	Thread.sleep(SMALL_DELAY_MS);
1023	>	delay(SMALL_DELAY_MS);
1024		} catch (InterruptedException ok) {}
1025		}
1026		}
1027
1028		public class SmallCallable extends CheckedCallable {
1029		protected Object realCall() throws InterruptedException {
1030	<	Thread.sleep(SMALL_DELAY_MS);
1030	>	delay(SMALL_DELAY_MS);
1031		return Boolean.TRUE;
1032		}
1033		}
1034
594	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
595	–	protected void realRun() throws InterruptedException {
596	–	Thread.sleep(SMALL_DELAY_MS);
597	–	}
598	–	}
599	–
1035		public class MediumRunnable extends CheckedRunnable {
1036		protected void realRun() throws Throwable {
1037	<	Thread.sleep(MEDIUM_DELAY_MS);
1037	>	delay(MEDIUM_DELAY_MS);
1038		}
1039		}
1040
1041		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1042		protected void realRun() throws InterruptedException {
1043	<	Thread.sleep(MEDIUM_DELAY_MS);
1043	>	delay(MEDIUM_DELAY_MS);
1044		}
1045		}
1046
1047	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1048	+	return new CheckedRunnable() {
1049	+	protected void realRun() {
1050	+	try {
1051	+	delay(timeoutMillis);
1052	+	} catch (InterruptedException ok) {}
1053	+	}};
1054	+	}
1055	+
1056		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1057		protected void realRun() {
1058		try {
1059	<	Thread.sleep(MEDIUM_DELAY_MS);
1059	>	delay(MEDIUM_DELAY_MS);
1060		} catch (InterruptedException ok) {}
1061		}
1062		}
#	Line 620 | Line 1064 | public class JSR166TestCase extends Test
1064		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1065		protected void realRun() {
1066		try {
1067	<	Thread.sleep(LONG_DELAY_MS);
1067	>	delay(LONG_DELAY_MS);
1068		} catch (InterruptedException ok) {}
1069		}
1070		}
#	Line 634 | Line 1078 | public class JSR166TestCase extends Test
1078		}
1079		}
1080
1081	+	public interface TrackedRunnable extends Runnable {
1082	+	boolean isDone();
1083	+	}
1084	+
1085	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1086	+	return new TrackedRunnable() {
1087	+	private volatile boolean done = false;
1088	+	public boolean isDone() { return done; }
1089	+	public void run() {
1090	+	try {
1091	+	delay(timeoutMillis);
1092	+	done = true;
1093	+	} catch (InterruptedException ok) {}
1094	+	}
1095	+	};
1096	+	}
1097	+
1098		public static class TrackedShortRunnable implements Runnable {
1099		public volatile boolean done = false;
1100		public void run() {
1101		try {
1102	<	Thread.sleep(SMALL_DELAY_MS);
1102	>	delay(SHORT_DELAY_MS);
1103	>	done = true;
1104	>	} catch (InterruptedException ok) {}
1105	>	}
1106	>	}
1107	>
1108	>	public static class TrackedSmallRunnable implements Runnable {
1109	>	public volatile boolean done = false;
1110	>	public void run() {
1111	>	try {
1112	>	delay(SMALL_DELAY_MS);
1113		done = true;
1114		} catch (InterruptedException ok) {}
1115		}
#	Line 648 | Line 1119 | public class JSR166TestCase extends Test
1119		public volatile boolean done = false;
1120		public void run() {
1121		try {
1122	<	Thread.sleep(MEDIUM_DELAY_MS);
1122	>	delay(MEDIUM_DELAY_MS);
1123		done = true;
1124		} catch (InterruptedException ok) {}
1125		}
#	Line 658 | Line 1129 | public class JSR166TestCase extends Test
1129		public volatile boolean done = false;
1130		public void run() {
1131		try {
1132	<	Thread.sleep(LONG_DELAY_MS);
1132	>	delay(LONG_DELAY_MS);
1133		done = true;
1134		} catch (InterruptedException ok) {}
1135		}
#	Line 675 | Line 1146 | public class JSR166TestCase extends Test
1146		public volatile boolean done = false;
1147		public Object call() {
1148		try {
1149	<	Thread.sleep(SMALL_DELAY_MS);
1149	>	delay(SMALL_DELAY_MS);
1150		done = true;
1151		} catch (InterruptedException ok) {}
1152		return Boolean.TRUE;
1153		}
1154		}
1155
1156	+	/**
1157	+	* Analog of CheckedRunnable for RecursiveAction
1158	+	*/
1159	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1160	+	protected abstract void realCompute() throws Throwable;
1161	+
1162	+	public final void compute() {
1163	+	try {
1164	+	realCompute();
1165	+	} catch (Throwable t) {
1166	+	threadUnexpectedException(t);
1167	+	}
1168	+	}
1169	+	}
1170	+
1171	+	/**
1172	+	* Analog of CheckedCallable for RecursiveTask
1173	+	*/
1174	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1175	+	protected abstract T realCompute() throws Throwable;
1176	+
1177	+	public final T compute() {
1178	+	try {
1179	+	return realCompute();
1180	+	} catch (Throwable t) {
1181	+	threadUnexpectedException(t);
1182	+	return null;
1183	+	}
1184	+	}
1185	+	}
1186
1187		/**
1188		* For use as RejectedExecutionHandler in constructors
#	Line 691 | Line 1192 | public class JSR166TestCase extends Test
1192		ThreadPoolExecutor executor) {}
1193		}
1194
1195	+	/**
1196	+	* A CyclicBarrier that uses timed await and fails with
1197	+	* AssertionFailedErrors instead of throwing checked exceptions.
1198	+	*/
1199	+	public class CheckedBarrier extends CyclicBarrier {
1200	+	public CheckedBarrier(int parties) { super(parties); }
1201	+
1202	+	public int await() {
1203	+	try {
1204	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1205	+	} catch (TimeoutException e) {
1206	+	throw new AssertionFailedError("timed out");
1207	+	} catch (Exception e) {
1208	+	AssertionFailedError afe =
1209	+	new AssertionFailedError("Unexpected exception: " + e);
1210	+	afe.initCause(e);
1211	+	throw afe;
1212	+	}
1213	+	}
1214	+	}
1215	+
1216	+	void checkEmpty(BlockingQueue q) {
1217	+	try {
1218	+	assertTrue(q.isEmpty());
1219	+	assertEquals(0, q.size());
1220	+	assertNull(q.peek());
1221	+	assertNull(q.poll());
1222	+	assertNull(q.poll(0, MILLISECONDS));
1223	+	assertEquals(q.toString(), "[]");
1224	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1225	+	assertFalse(q.iterator().hasNext());
1226	+	try {
1227	+	q.element();
1228	+	shouldThrow();
1229	+	} catch (NoSuchElementException success) {}
1230	+	try {
1231	+	q.iterator().next();
1232	+	shouldThrow();
1233	+	} catch (NoSuchElementException success) {}
1234	+	try {
1235	+	q.remove();
1236	+	shouldThrow();
1237	+	} catch (NoSuchElementException success) {}
1238	+	} catch (InterruptedException ie) {
1239	+	threadUnexpectedException(ie);
1240	+	}
1241	+	}
1242	+
1243	+	void assertSerialEquals(Object x, Object y) {
1244	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1245	+	}
1246	+
1247	+	void assertNotSerialEquals(Object x, Object y) {
1248	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1249	+	}
1250	+
1251	+	byte[] serialBytes(Object o) {
1252	+	try {
1253	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1254	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1255	+	oos.writeObject(o);
1256	+	oos.flush();
1257	+	oos.close();
1258	+	return bos.toByteArray();
1259	+	} catch (Throwable t) {
1260	+	threadUnexpectedException(t);
1261	+	return new byte[0];
1262	+	}
1263	+	}
1264	+
1265	+	@SuppressWarnings("unchecked")
1266	+	<T> T serialClone(T o) {
1267	+	try {
1268	+	ObjectInputStream ois = new ObjectInputStream
1269	+	(new ByteArrayInputStream(serialBytes(o)));
1270	+	T clone = (T) ois.readObject();
1271	+	assertSame(o.getClass(), clone.getClass());
1272	+	return clone;
1273	+	} catch (Throwable t) {
1274	+	threadUnexpectedException(t);
1275	+	return null;
1276	+	}
1277	+	}
1278		}

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