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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.2 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.111 by dl, Sun Jul 21 22:24:18 2013 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/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.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.io.*;
26	<
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.security.CodeSource;
30	>	import java.security.Permission;
31	>	import java.security.PermissionCollection;
32	>	import java.security.Permissions;
33	>	import java.security.Policy;
34	>	import java.security.ProtectionDomain;
35	>	import java.security.SecurityPermission;
36
37		/**
38	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
39	<	* utility methods, as well as a simple framework for helping to make
40	<	* sure that assertions failing in generated threads cause the
41	<	* associated test that generated them to itself fail (which JUnit doe
42	<	* not otherwise arrange).  The rules for creating such tests are:
38	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
39	>	* utility methods and classes, as well as a simple framework for
40	>	* helping to make sure that assertions failing in generated threads
41	>	* cause the associated test that generated them to itself fail (which
42	>	* JUnit does not otherwise arrange).  The rules for creating such
43	>	* tests are:
44		*
45		* <ol>
46		*
47		* <li> All assertions in code running in generated threads must use
48	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
49	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
50	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
48	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
49	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
50	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
51		* particularly recommended) for other code to use these forms too.
52		* Only the most typically used JUnit assertion methods are defined
53		* this way, but enough to live with.</li>
54		*
55	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
56	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
55	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
56	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
57		* them. These methods are used to clear and check for thread
58		* assertion failures.</li>
59		*
60	<	* <li>All delays and timeouts must use one of the constants {@link
61	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
62	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
63	<	* discriminatable from zero time, and always allows enough time for
64	<	* the small amounts of computation (creating a thread, calling a few
60	>	* <li>All delays and timeouts must use one of the constants {@code
61	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
62	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
63	>	* discriminable from zero time, and always allows enough time for the
64	>	* small amounts of computation (creating a thread, calling a few
65		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
66		* is always discriminable as larger than SHORT and smaller than
67		* MEDIUM.  And so on. These constants are set to conservative values,
68		* but even so, if there is ever any doubt, they can all be increased
69	<	* in one spot to rerun tests on slower platforms</li>
69	>	* in one spot to rerun tests on slower platforms.</li>
70		*
71		* <li> All threads generated must be joined inside each test case
72	<	* method (or <tt>fail</tt> to do so) before returning from the
73	<	* method. The {@link joinPool} method can be used to do this when
72	>	* method (or {@code fail} to do so) before returning from the
73	>	* method. The {@code joinPool} method can be used to do this when
74		* using Executors.</li>
75		*
76		* </ol>
77	+	*
78	+	* <p><b>Other notes</b>
79	+	* <ul>
80	+	*
81	+	* <li> Usually, there is one testcase method per JSR166 method
82	+	* covering "normal" operation, and then as many exception-testing
83	+	* methods as there are exceptions the method can throw. Sometimes
84	+	* there are multiple tests per JSR166 method when the different
85	+	* "normal" behaviors differ significantly. And sometimes testcases
86	+	* cover multiple methods when they cannot be tested in
87	+	* isolation.</li>
88	+	*
89	+	* <li> The documentation style for testcases is to provide as javadoc
90	+	* a simple sentence or two describing the property that the testcase
91	+	* method purports to test. The javadocs do not say anything about how
92	+	* the property is tested. To find out, read the code.</li>
93	+	*
94	+	* <li> These tests are "conformance tests", and do not attempt to
95	+	* test throughput, latency, scalability or other performance factors
96	+	* (see the separate "jtreg" tests for a set intended to check these
97	+	* for the most central aspects of functionality.) So, most tests use
98	+	* the smallest sensible numbers of threads, collection sizes, etc
99	+	* needed to check basic conformance.</li>
100	+	*
101	+	* <li>The test classes currently do not declare inclusion in
102	+	* any particular package to simplify things for people integrating
103	+	* them in TCK test suites.</li>
104	+	*
105	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
106	+	* runs all JSR166 unit tests.</li>
107	+	*
108	+	* </ul>
109		*/
110		public class JSR166TestCase extends TestCase {
111	+	private static final boolean useSecurityManager =
112	+	Boolean.getBoolean("jsr166.useSecurityManager");
113	+
114	+	protected static final boolean expensiveTests =
115	+	Boolean.getBoolean("jsr166.expensiveTests");
116	+
117	+	/**
118	+	* If true, report on stdout all "slow" tests, that is, ones that
119	+	* take more than profileThreshold milliseconds to execute.
120	+	*/
121	+	private static final boolean profileTests =
122	+	Boolean.getBoolean("jsr166.profileTests");
123	+
124	+	/**
125	+	* The number of milliseconds that tests are permitted for
126	+	* execution without being reported, when profileTests is set.
127	+	*/
128	+	private static final long profileThreshold =
129	+	Long.getLong("jsr166.profileThreshold", 100);
130	+
131	+	/**
132	+	* The number of repetitions per test (for tickling rare bugs).
133	+	*/
134	+	private static final int runsPerTest =
135	+	Integer.getInteger("jsr166.runsPerTest", 1);
136	+
137	+	protected void runTest() throws Throwable {
138	+	for (int i = 0; i < runsPerTest; i++) {
139	+	if (profileTests)
140	+	runTestProfiled();
141	+	else
142	+	super.runTest();
143	+	}
144	+	}
145	+
146	+	protected void runTestProfiled() throws Throwable {
147	+	long t0 = System.nanoTime();
148	+	try {
149	+	super.runTest();
150	+	} finally {
151	+	long elapsedMillis =
152	+	(System.nanoTime() - t0) / (1000L * 1000L);
153	+	if (elapsedMillis >= profileThreshold)
154	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
155	+	}
156	+	}
157	+
158	+	/**
159	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
160	+	* Optional command line arg provides the number of iterations to
161	+	* repeat running the tests.
162	+	*/
163	+	public static void main(String[] args) {
164	+	if (useSecurityManager) {
165	+	System.err.println("Setting a permissive security manager");
166	+	Policy.setPolicy(permissivePolicy());
167	+	System.setSecurityManager(new SecurityManager());
168	+	}
169	+	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
170	+
171	+	Test s = suite();
172	+	for (int i = 0; i < iters; ++i) {
173	+	junit.textui.TestRunner.run(s);
174	+	System.gc();
175	+	System.runFinalization();
176	+	}
177	+	System.exit(0);
178	+	}
179	+
180	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
181	+	TestSuite suite = new TestSuite();
182	+	for (Object suiteOrClass : suiteOrClasses) {
183	+	if (suiteOrClass instanceof TestSuite)
184	+	suite.addTest((TestSuite) suiteOrClass);
185	+	else if (suiteOrClass instanceof Class)
186	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
187	+	else
188	+	throw new ClassCastException("not a test suite or class");
189	+	}
190	+	return suite;
191	+	}
192	+
193	+	public static void addNamedTestClasses(TestSuite suite,
194	+	String... testClassNames) {
195	+	for (String testClassName : testClassNames) {
196	+	try {
197	+	Class<?> testClass = Class.forName(testClassName);
198	+	Method m = testClass.getDeclaredMethod("suite",
199	+	new Class<?>[0]);
200	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
201	+	} catch (Exception e) {
202	+	throw new Error("Missing test class", e);
203	+	}
204	+	}
205	+	}
206	+
207	+	public static final double JAVA_CLASS_VERSION;
208	+	static {
209	+	try {
210	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
211	+	new java.security.PrivilegedAction<Double>() {
212	+	public Double run() {
213	+	return Double.valueOf(System.getProperty("java.class.version"));}});
214	+	} catch (Throwable t) {
215	+	throw new Error(t);
216	+	}
217	+	}
218	+
219	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
220	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
221	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
222	+
223	+	/**
224	+	* Collects all JSR166 unit tests as one suite.
225	+	*/
226	+	public static Test suite() {
227	+	// Java7+ test classes
228	+	TestSuite suite = newTestSuite(
229	+	ForkJoinPoolTest.suite(),
230	+	ForkJoinTaskTest.suite(),
231	+	RecursiveActionTest.suite(),
232	+	RecursiveTaskTest.suite(),
233	+	LinkedTransferQueueTest.suite(),
234	+	PhaserTest.suite(),
235	+	ThreadLocalRandomTest.suite(),
236	+	AbstractExecutorServiceTest.suite(),
237	+	AbstractQueueTest.suite(),
238	+	AbstractQueuedSynchronizerTest.suite(),
239	+	AbstractQueuedLongSynchronizerTest.suite(),
240	+	ArrayBlockingQueueTest.suite(),
241	+	ArrayDequeTest.suite(),
242	+	AtomicBooleanTest.suite(),
243	+	AtomicIntegerArrayTest.suite(),
244	+	AtomicIntegerFieldUpdaterTest.suite(),
245	+	AtomicIntegerTest.suite(),
246	+	AtomicLongArrayTest.suite(),
247	+	AtomicLongFieldUpdaterTest.suite(),
248	+	AtomicLongTest.suite(),
249	+	AtomicMarkableReferenceTest.suite(),
250	+	AtomicReferenceArrayTest.suite(),
251	+	AtomicReferenceFieldUpdaterTest.suite(),
252	+	AtomicReferenceTest.suite(),
253	+	AtomicStampedReferenceTest.suite(),
254	+	ConcurrentHashMapTest.suite(),
255	+	ConcurrentLinkedDequeTest.suite(),
256	+	ConcurrentLinkedQueueTest.suite(),
257	+	ConcurrentSkipListMapTest.suite(),
258	+	ConcurrentSkipListSubMapTest.suite(),
259	+	ConcurrentSkipListSetTest.suite(),
260	+	ConcurrentSkipListSubSetTest.suite(),
261	+	CopyOnWriteArrayListTest.suite(),
262	+	CopyOnWriteArraySetTest.suite(),
263	+	CountDownLatchTest.suite(),
264	+	CyclicBarrierTest.suite(),
265	+	DelayQueueTest.suite(),
266	+	EntryTest.suite(),
267	+	ExchangerTest.suite(),
268	+	ExecutorsTest.suite(),
269	+	ExecutorCompletionServiceTest.suite(),
270	+	FutureTaskTest.suite(),
271	+	LinkedBlockingDequeTest.suite(),
272	+	LinkedBlockingQueueTest.suite(),
273	+	LinkedListTest.suite(),
274	+	LockSupportTest.suite(),
275	+	PriorityBlockingQueueTest.suite(),
276	+	PriorityQueueTest.suite(),
277	+	ReentrantLockTest.suite(),
278	+	ReentrantReadWriteLockTest.suite(),
279	+	ScheduledExecutorTest.suite(),
280	+	ScheduledExecutorSubclassTest.suite(),
281	+	SemaphoreTest.suite(),
282	+	SynchronousQueueTest.suite(),
283	+	SystemTest.suite(),
284	+	ThreadLocalTest.suite(),
285	+	ThreadPoolExecutorTest.suite(),
286	+	ThreadPoolExecutorSubclassTest.suite(),
287	+	ThreadTest.suite(),
288	+	TimeUnitTest.suite(),
289	+	TreeMapTest.suite(),
290	+	TreeSetTest.suite(),
291	+	TreeSubMapTest.suite(),
292	+	TreeSubSetTest.suite());
293	+
294	+	// Java8+ test classes
295	+	if (atLeastJava8()) {
296	+	String[] java8TestClassNames = {
297	+	"CompletableFutureTest",
298	+	"ConcurrentHashMap8Test",
299	+	"CountedCompleterTest",
300	+	"DoubleAccumulatorTest",
301	+	"DoubleAdderTest",
302	+	"ForkJoinPool8Test",
303	+	"ForkJoinTask8Test",
304	+	"LongAccumulatorTest",
305	+	"LongAdderTest",
306	+	"SplittableRandomTest",
307	+	"StampedLockTest",
308	+	};
309	+	addNamedTestClasses(suite, java8TestClassNames);
310	+	}
311	+
312	+	return suite;
313	+	}
314	+
315	+	// Delays for timing-dependent tests, in milliseconds.
316
317		public static long SHORT_DELAY_MS;
318		public static long SMALL_DELAY_MS;
319		public static long MEDIUM_DELAY_MS;
320		public static long LONG_DELAY_MS;
321
61	–
322		/**
323	<	* Return the shortest timed delay. This could
324	<	* be reimplmented to use for example a Property.
325	<	*/
323	>	* Returns the shortest timed delay. This could
324	>	* be reimplemented to use for example a Property.
325	>	*/
326		protected long getShortDelay() {
327		return 50;
328		}
329
70	–
330		/**
331	<	* Set delays as multiples fo SHORT_DELAY.
331	>	* Sets delays as multiples of SHORT_DELAY.
332		*/
333	<	protected  void setDelays() {
333	>	protected void setDelays() {
334		SHORT_DELAY_MS = getShortDelay();
335	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
335	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
336		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
337	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
337	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
338	>	}
339	>
340	>	/**
341	>	* Returns a timeout in milliseconds to be used in tests that
342	>	* verify that operations block or time out.
343	>	*/
344	>	long timeoutMillis() {
345	>	return SHORT_DELAY_MS / 4;
346	>	}
347	>
348	>	/**
349	>	* Returns a new Date instance representing a time delayMillis
350	>	* milliseconds in the future.
351	>	*/
352	>	Date delayedDate(long delayMillis) {
353	>	return new Date(System.currentTimeMillis() + delayMillis);
354		}
355
356		/**
357	<	* Flag set true if any threadAssert methods fail
357	>	* The first exception encountered if any threadAssertXXX method fails.
358		*/
359	<	protected volatile boolean threadFailed;
359	>	private final AtomicReference<Throwable> threadFailure
360	>	= new AtomicReference<Throwable>(null);
361
362		/**
363	<	* Initialize test to indicat that no thread assertions have failed
363	>	* Records an exception so that it can be rethrown later in the test
364	>	* harness thread, triggering a test case failure.  Only the first
365	>	* failure is recorded; subsequent calls to this method from within
366	>	* the same test have no effect.
367		*/
368	<	public void setUp() {
368	>	public void threadRecordFailure(Throwable t) {
369	>	threadFailure.compareAndSet(null, t);
370	>	}
371	>
372	>	public void setUp() {
373		setDelays();
91	–	threadFailed = false;
374		}
375
376		/**
377	<	* Trigger test case failure if any thread assertions have failed
377	>	* Extra checks that get done for all test cases.
378	>	*
379	>	* Triggers test case failure if any thread assertions have failed,
380	>	* by rethrowing, in the test harness thread, any exception recorded
381	>	* earlier by threadRecordFailure.
382	>	*
383	>	* Triggers test case failure if interrupt status is set in the main thread.
384		*/
385	<	public void tearDown() {
386	<	assertFalse(threadFailed);
385	>	public void tearDown() throws Exception {
386	>	Throwable t = threadFailure.getAndSet(null);
387	>	if (t != null) {
388	>	if (t instanceof Error)
389	>	throw (Error) t;
390	>	else if (t instanceof RuntimeException)
391	>	throw (RuntimeException) t;
392	>	else if (t instanceof Exception)
393	>	throw (Exception) t;
394	>	else {
395	>	AssertionFailedError afe =
396	>	new AssertionFailedError(t.toString());
397	>	afe.initCause(t);
398	>	throw afe;
399	>	}
400	>	}
401	>
402	>	if (Thread.interrupted())
403	>	throw new AssertionFailedError("interrupt status set in main thread");
404	>
405	>	checkForkJoinPoolThreadLeaks();
406		}
407
408	+	/**
409	+	* Find missing try { ... } finally { joinPool(e); }
410	+	*/
411	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
412	+	Thread[] survivors = new Thread[5];
413	+	int count = Thread.enumerate(survivors);
414	+	for (int i = 0; i < count; i++) {
415	+	Thread thread = survivors[i];
416	+	String name = thread.getName();
417	+	if (name.startsWith("ForkJoinPool-")) {
418	+	// give thread some time to terminate
419	+	thread.join(LONG_DELAY_MS);
420	+	if (!thread.isAlive()) continue;
421	+	thread.stop();
422	+	throw new AssertionFailedError
423	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
424	+	toString(), name));
425	+	}
426	+	}
427	+	}
428	+
429	+	/**
430	+	* Just like fail(reason), but additionally recording (using
431	+	* threadRecordFailure) any AssertionFailedError thrown, so that
432	+	* the current testcase will fail.
433	+	*/
434		public void threadFail(String reason) {
435	<	threadFailed = true;
436	<	fail(reason);
435	>	try {
436	>	fail(reason);
437	>	} catch (AssertionFailedError t) {
438	>	threadRecordFailure(t);
439	>	fail(reason);
440	>	}
441		}
442
443	+	/**
444	+	* Just like assertTrue(b), but additionally recording (using
445	+	* threadRecordFailure) any AssertionFailedError thrown, so that
446	+	* the current testcase will fail.
447	+	*/
448		public void threadAssertTrue(boolean b) {
449	<	if (!b) {
108	<	threadFailed = true;
449	>	try {
450		assertTrue(b);
451	+	} catch (AssertionFailedError t) {
452	+	threadRecordFailure(t);
453	+	throw t;
454		}
455		}
456	+
457	+	/**
458	+	* Just like assertFalse(b), but additionally recording (using
459	+	* threadRecordFailure) any AssertionFailedError thrown, so that
460	+	* the current testcase will fail.
461	+	*/
462		public void threadAssertFalse(boolean b) {
463	<	if (b) {
114	<	threadFailed = true;
463	>	try {
464		assertFalse(b);
465	+	} catch (AssertionFailedError t) {
466	+	threadRecordFailure(t);
467	+	throw t;
468		}
469		}
470	+
471	+	/**
472	+	* Just like assertNull(x), but additionally recording (using
473	+	* threadRecordFailure) any AssertionFailedError thrown, so that
474	+	* the current testcase will fail.
475	+	*/
476		public void threadAssertNull(Object x) {
477	<	if (x != null) {
120	<	threadFailed = true;
477	>	try {
478		assertNull(x);
479	+	} catch (AssertionFailedError t) {
480	+	threadRecordFailure(t);
481	+	throw t;
482		}
483		}
484	+
485	+	/**
486	+	* Just like assertEquals(x, y), but additionally recording (using
487	+	* threadRecordFailure) any AssertionFailedError thrown, so that
488	+	* the current testcase will fail.
489	+	*/
490		public void threadAssertEquals(long x, long y) {
491	<	if (x != y) {
126	<	threadFailed = true;
491	>	try {
492		assertEquals(x, y);
493	+	} catch (AssertionFailedError t) {
494	+	threadRecordFailure(t);
495	+	throw t;
496		}
497		}
498	+
499	+	/**
500	+	* Just like assertEquals(x, y), but additionally recording (using
501	+	* threadRecordFailure) any AssertionFailedError thrown, so that
502	+	* the current testcase will fail.
503	+	*/
504		public void threadAssertEquals(Object x, Object y) {
505	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
505	>	try {
506		assertEquals(x, y);
507	+	} catch (AssertionFailedError t) {
508	+	threadRecordFailure(t);
509	+	throw t;
510	+	} catch (Throwable t) {
511	+	threadUnexpectedException(t);
512	+	}
513	+	}
514	+
515	+	/**
516	+	* Just like assertSame(x, y), but additionally recording (using
517	+	* threadRecordFailure) any AssertionFailedError thrown, so that
518	+	* the current testcase will fail.
519	+	*/
520	+	public void threadAssertSame(Object x, Object y) {
521	+	try {
522	+	assertSame(x, y);
523	+	} catch (AssertionFailedError t) {
524	+	threadRecordFailure(t);
525	+	throw t;
526	+	}
527	+	}
528	+
529	+	/**
530	+	* Calls threadFail with message "should throw exception".
531	+	*/
532	+	public void threadShouldThrow() {
533	+	threadFail("should throw exception");
534	+	}
535	+
536	+	/**
537	+	* Calls threadFail with message "should throw" + exceptionName.
538	+	*/
539	+	public void threadShouldThrow(String exceptionName) {
540	+	threadFail("should throw " + exceptionName);
541	+	}
542	+
543	+	/**
544	+	* Records the given exception using {@link #threadRecordFailure},
545	+	* then rethrows the exception, wrapping it in an
546	+	* AssertionFailedError if necessary.
547	+	*/
548	+	public void threadUnexpectedException(Throwable t) {
549	+	threadRecordFailure(t);
550	+	t.printStackTrace();
551	+	if (t instanceof RuntimeException)
552	+	throw (RuntimeException) t;
553	+	else if (t instanceof Error)
554	+	throw (Error) t;
555	+	else {
556	+	AssertionFailedError afe =
557	+	new AssertionFailedError("unexpected exception: " + t);
558	+	afe.initCause(t);
559	+	throw afe;
560	+	}
561	+	}
562	+
563	+	/**
564	+	* Delays, via Thread.sleep, for the given millisecond delay, but
565	+	* if the sleep is shorter than specified, may re-sleep or yield
566	+	* until time elapses.
567	+	*/
568	+	static void delay(long millis) throws InterruptedException {
569	+	long startTime = System.nanoTime();
570	+	long ns = millis * 1000 * 1000;
571	+	for (;;) {
572	+	if (millis > 0L)
573	+	Thread.sleep(millis);
574	+	else // too short to sleep
575	+	Thread.yield();
576	+	long d = ns - (System.nanoTime() - startTime);
577	+	if (d > 0L)
578	+	millis = d / (1000 * 1000);
579	+	else
580	+	break;
581		}
582		}
583
584		/**
585	<	* Wait out termination of a thread pool or fail doing so
585	>	* Waits out termination of a thread pool or fails doing so.
586		*/
587	<	public void joinPool(ExecutorService exec) {
587	>	void joinPool(ExecutorService exec) {
588		try {
589		exec.shutdown();
590	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
591	<	} catch(InterruptedException ie) {
592	<	fail("unexpected exception");
590	>	assertTrue("ExecutorService did not terminate in a timely manner",
591	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
592	>	} catch (SecurityException ok) {
593	>	// Allowed in case test doesn't have privs
594	>	} catch (InterruptedException ie) {
595	>	fail("Unexpected InterruptedException");
596		}
597		}
598
599	+	/**
600	+	* A debugging tool to print all stack traces, as jstack does.
601	+	*/
602	+	static void printAllStackTraces() {
603	+	for (ThreadInfo info :
604	+	ManagementFactory.getThreadMXBean()
605	+	.dumpAllThreads(true, true))
606	+	System.err.print(info);
607	+	}
608	+
609	+	/**
610	+	* Checks that thread does not terminate within the default
611	+	* millisecond delay of {@code timeoutMillis()}.
612	+	*/
613	+	void assertThreadStaysAlive(Thread thread) {
614	+	assertThreadStaysAlive(thread, timeoutMillis());
615	+	}
616	+
617	+	/**
618	+	* Checks that thread does not terminate within the given millisecond delay.
619	+	*/
620	+	void assertThreadStaysAlive(Thread thread, long millis) {
621	+	try {
622	+	// No need to optimize the failing case via Thread.join.
623	+	delay(millis);
624	+	assertTrue(thread.isAlive());
625	+	} catch (InterruptedException ie) {
626	+	fail("Unexpected InterruptedException");
627	+	}
628	+	}
629
630	+	/**
631	+	* Checks that the threads do not terminate within the default
632	+	* millisecond delay of {@code timeoutMillis()}.
633	+	*/
634	+	void assertThreadsStayAlive(Thread... threads) {
635	+	assertThreadsStayAlive(timeoutMillis(), threads);
636	+	}
637	+
638	+	/**
639	+	* Checks that the threads do not terminate within the given millisecond delay.
640	+	*/
641	+	void assertThreadsStayAlive(long millis, Thread... threads) {
642	+	try {
643	+	// No need to optimize the failing case via Thread.join.
644	+	delay(millis);
645	+	for (Thread thread : threads)
646	+	assertTrue(thread.isAlive());
647	+	} catch (InterruptedException ie) {
648	+	fail("Unexpected InterruptedException");
649	+	}
650	+	}
651	+
652	+	/**
653	+	* Checks that future.get times out, with the default timeout of
654	+	* {@code timeoutMillis()}.
655	+	*/
656	+	void assertFutureTimesOut(Future future) {
657	+	assertFutureTimesOut(future, timeoutMillis());
658	+	}
659	+
660	+	/**
661	+	* Checks that future.get times out, with the given millisecond timeout.
662	+	*/
663	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
664	+	long startTime = System.nanoTime();
665	+	try {
666	+	future.get(timeoutMillis, MILLISECONDS);
667	+	shouldThrow();
668	+	} catch (TimeoutException success) {
669	+	} catch (Exception e) {
670	+	threadUnexpectedException(e);
671	+	} finally { future.cancel(true); }
672	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
673	+	}
674	+
675	+	/**
676	+	* Fails with message "should throw exception".
677	+	*/
678	+	public void shouldThrow() {
679	+	fail("Should throw exception");
680	+	}
681	+
682	+	/**
683	+	* Fails with message "should throw " + exceptionName.
684	+	*/
685	+	public void shouldThrow(String exceptionName) {
686	+	fail("Should throw " + exceptionName);
687	+	}
688
689		/**
690		* The number of elements to place in collections, arrays, etc.
#	Line 155 | Line 693 | public class JSR166TestCase extends Test
693
694		// Some convenient Integer constants
695
696	<	public static final Integer zero = new Integer(0);
697	<	public static final Integer one = new Integer(1);
698	<	public static final Integer two = new Integer(2);
699	<	public static final Integer three  = new Integer(3);
696	>	public static final Integer zero  = new Integer(0);
697	>	public static final Integer one   = new Integer(1);
698	>	public static final Integer two   = new Integer(2);
699	>	public static final Integer three = new Integer(3);
700		public static final Integer four  = new Integer(4);
701		public static final Integer five  = new Integer(5);
702	<	public static final Integer six = new Integer(6);
702	>	public static final Integer six   = new Integer(6);
703		public static final Integer seven = new Integer(7);
704		public static final Integer eight = new Integer(8);
705	<	public static final Integer nine = new Integer(9);
705	>	public static final Integer nine  = new Integer(9);
706		public static final Integer m1  = new Integer(-1);
707		public static final Integer m2  = new Integer(-2);
708		public static final Integer m3  = new Integer(-3);
709	<	public static final Integer m4 = new Integer(-4);
710	<	public static final Integer m5 = new Integer(-5);
709	>	public static final Integer m4  = new Integer(-4);
710	>	public static final Integer m5  = new Integer(-5);
711	>	public static final Integer m6  = new Integer(-6);
712		public static final Integer m10 = new Integer(-10);
713
714	+	/**
715	+	* Runs Runnable r with a security policy that permits precisely
716	+	* the specified permissions.  If there is no current security
717	+	* manager, the runnable is run twice, both with and without a
718	+	* security manager.  We require that any security manager permit
719	+	* getPolicy/setPolicy.
720	+	*/
721	+	public void runWithPermissions(Runnable r, Permission... permissions) {
722	+	SecurityManager sm = System.getSecurityManager();
723	+	if (sm == null) {
724	+	r.run();
725	+	}
726	+	runWithSecurityManagerWithPermissions(r, permissions);
727	+	}
728
729	<	// Some convenient Runnable classes
729	>	/**
730	>	* Runs Runnable r with a security policy that permits precisely
731	>	* the specified permissions.  If there is no current security
732	>	* manager, a temporary one is set for the duration of the
733	>	* Runnable.  We require that any security manager permit
734	>	* getPolicy/setPolicy.
735	>	*/
736	>	public void runWithSecurityManagerWithPermissions(Runnable r,
737	>	Permission... permissions) {
738	>	SecurityManager sm = System.getSecurityManager();
739	>	if (sm == null) {
740	>	Policy savedPolicy = Policy.getPolicy();
741	>	try {
742	>	Policy.setPolicy(permissivePolicy());
743	>	System.setSecurityManager(new SecurityManager());
744	>	runWithSecurityManagerWithPermissions(r, permissions);
745	>	} finally {
746	>	System.setSecurityManager(null);
747	>	Policy.setPolicy(savedPolicy);
748	>	}
749	>	} else {
750	>	Policy savedPolicy = Policy.getPolicy();
751	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
752	>	Policy.setPolicy(policy);
753
754	<	public static class NoOpRunnable implements Runnable {
755	<	public void run() {}
754	>	try {
755	>	r.run();
756	>	} finally {
757	>	policy.addPermission(new SecurityPermission("setPolicy"));
758	>	Policy.setPolicy(savedPolicy);
759	>	}
760	>	}
761		}
762
763	<	public static class NoOpCallable implements Callable {
764	<	public Object call() { return Boolean.TRUE; }
763	>	/**
764	>	* Runs a runnable without any permissions.
765	>	*/
766	>	public void runWithoutPermissions(Runnable r) {
767	>	runWithPermissions(r);
768		}
769
770	<	public class ShortRunnable implements Runnable {
771	<	public void run() {
772	<	try {
773	<	Thread.sleep(SHORT_DELAY_MS);
770	>	/**
771	>	* A security policy where new permissions can be dynamically added
772	>	* or all cleared.
773	>	*/
774	>	public static class AdjustablePolicy extends java.security.Policy {
775	>	Permissions perms = new Permissions();
776	>	AdjustablePolicy(Permission... permissions) {
777	>	for (Permission permission : permissions)
778	>	perms.add(permission);
779	>	}
780	>	void addPermission(Permission perm) { perms.add(perm); }
781	>	void clearPermissions() { perms = new Permissions(); }
782	>	public PermissionCollection getPermissions(CodeSource cs) {
783	>	return perms;
784	>	}
785	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
786	>	return perms;
787	>	}
788	>	public boolean implies(ProtectionDomain pd, Permission p) {
789	>	return perms.implies(p);
790	>	}
791	>	public void refresh() {}
792	>	public String toString() {
793	>	List<Permission> ps = new ArrayList<Permission>();
794	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
795	>	ps.add(e.nextElement());
796	>	return "AdjustablePolicy with permissions " + ps;
797	>	}
798	>	}
799	>
800	>	/**
801	>	* Returns a policy containing all the permissions we ever need.
802	>	*/
803	>	public static Policy permissivePolicy() {
804	>	return new AdjustablePolicy
805	>	// Permissions j.u.c. needs directly
806	>	(new RuntimePermission("modifyThread"),
807	>	new RuntimePermission("getClassLoader"),
808	>	new RuntimePermission("setContextClassLoader"),
809	>	// Permissions needed to change permissions!
810	>	new SecurityPermission("getPolicy"),
811	>	new SecurityPermission("setPolicy"),
812	>	new RuntimePermission("setSecurityManager"),
813	>	// Permissions needed by the junit test harness
814	>	new RuntimePermission("accessDeclaredMembers"),
815	>	new PropertyPermission("*", "read"),
816	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
817	>	}
818	>
819	>	/**
820	>	* Sleeps until the given time has elapsed.
821	>	* Throws AssertionFailedError if interrupted.
822	>	*/
823	>	void sleep(long millis) {
824	>	try {
825	>	delay(millis);
826	>	} catch (InterruptedException ie) {
827	>	AssertionFailedError afe =
828	>	new AssertionFailedError("Unexpected InterruptedException");
829	>	afe.initCause(ie);
830	>	throw afe;
831	>	}
832	>	}
833	>
834	>	/**
835	>	* Spin-waits up to the specified number of milliseconds for the given
836	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
837	>	*/
838	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
839	>	long startTime = System.nanoTime();
840	>	for (;;) {
841	>	Thread.State s = thread.getState();
842	>	if (s == Thread.State.BLOCKED ||
843	>	s == Thread.State.WAITING ||
844	>	s == Thread.State.TIMED_WAITING)
845	>	return;
846	>	else if (s == Thread.State.TERMINATED)
847	>	fail("Unexpected thread termination");
848	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
849	>	threadAssertTrue(thread.isAlive());
850	>	return;
851		}
852	<	catch(Exception e) {
853	<	threadFail("unexpectedException");
852	>	Thread.yield();
853	>	}
854	>	}
855	>
856	>	/**
857	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
858	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
859	>	*/
860	>	void waitForThreadToEnterWaitState(Thread thread) {
861	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
862	>	}
863	>
864	>	/**
865	>	* Returns the number of milliseconds since time given by
866	>	* startNanoTime, which must have been previously returned from a
867	>	* call to {@link System.nanoTime()}.
868	>	*/
869	>	long millisElapsedSince(long startNanoTime) {
870	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
871	>	}
872	>
873	>	/**
874	>	* Returns a new started daemon Thread running the given runnable.
875	>	*/
876	>	Thread newStartedThread(Runnable runnable) {
877	>	Thread t = new Thread(runnable);
878	>	t.setDaemon(true);
879	>	t.start();
880	>	return t;
881	>	}
882	>
883	>	/**
884	>	* Waits for the specified time (in milliseconds) for the thread
885	>	* to terminate (using {@link Thread#join(long)}), else interrupts
886	>	* the thread (in the hope that it may terminate later) and fails.
887	>	*/
888	>	void awaitTermination(Thread t, long timeoutMillis) {
889	>	try {
890	>	t.join(timeoutMillis);
891	>	} catch (InterruptedException ie) {
892	>	threadUnexpectedException(ie);
893	>	} finally {
894	>	if (t.getState() != Thread.State.TERMINATED) {
895	>	t.interrupt();
896	>	fail("Test timed out");
897		}
898		}
899		}
900
901	<	public class ShortInterruptedRunnable implements Runnable {
902	<	public void run() {
901	>	/**
902	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
903	>	* terminate (using {@link Thread#join(long)}), else interrupts
904	>	* the thread (in the hope that it may terminate later) and fails.
905	>	*/
906	>	void awaitTermination(Thread t) {
907	>	awaitTermination(t, LONG_DELAY_MS);
908	>	}
909	>
910	>	// Some convenient Runnable classes
911	>
912	>	public abstract class CheckedRunnable implements Runnable {
913	>	protected abstract void realRun() throws Throwable;
914	>
915	>	public final void run() {
916		try {
917	<	Thread.sleep(SHORT_DELAY_MS);
918	<	threadFail("should throw IE");
917	>	realRun();
918	>	} catch (Throwable t) {
919	>	threadUnexpectedException(t);
920		}
921	<	catch(InterruptedException success) {
921	>	}
922	>	}
923	>
924	>	public abstract class RunnableShouldThrow implements Runnable {
925	>	protected abstract void realRun() throws Throwable;
926	>
927	>	final Class<?> exceptionClass;
928	>
929	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
930	>	this.exceptionClass = exceptionClass;
931	>	}
932	>
933	>	public final void run() {
934	>	try {
935	>	realRun();
936	>	threadShouldThrow(exceptionClass.getSimpleName());
937	>	} catch (Throwable t) {
938	>	if (! exceptionClass.isInstance(t))
939	>	threadUnexpectedException(t);
940		}
941		}
942		}
943
944	<	public class SmallRunnable implements Runnable {
945	<	public void run() {
944	>	public abstract class ThreadShouldThrow extends Thread {
945	>	protected abstract void realRun() throws Throwable;
946	>
947	>	final Class<?> exceptionClass;
948	>
949	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
950	>	this.exceptionClass = exceptionClass;
951	>	}
952	>
953	>	public final void run() {
954		try {
955	<	Thread.sleep(SMALL_DELAY_MS);
955	>	realRun();
956	>	threadShouldThrow(exceptionClass.getSimpleName());
957	>	} catch (Throwable t) {
958	>	if (! exceptionClass.isInstance(t))
959	>	threadUnexpectedException(t);
960		}
961	<	catch(Exception e) {
962	<	threadFail("unexpectedException");
961	>	}
962	>	}
963	>
964	>	public abstract class CheckedInterruptedRunnable implements Runnable {
965	>	protected abstract void realRun() throws Throwable;
966	>
967	>	public final void run() {
968	>	try {
969	>	realRun();
970	>	threadShouldThrow("InterruptedException");
971	>	} catch (InterruptedException success) {
972	>	threadAssertFalse(Thread.interrupted());
973	>	} catch (Throwable t) {
974	>	threadUnexpectedException(t);
975		}
976		}
977		}
978
979	<	public class SmallCallable implements Callable {
980	<	public Object call() {
979	>	public abstract class CheckedCallable<T> implements Callable<T> {
980	>	protected abstract T realCall() throws Throwable;
981	>
982	>	public final T call() {
983		try {
984	<	Thread.sleep(SMALL_DELAY_MS);
984	>	return realCall();
985	>	} catch (Throwable t) {
986	>	threadUnexpectedException(t);
987	>	return null;
988		}
989	<	catch(Exception e) {
990	<	threadFail("unexpectedException");
989	>	}
990	>	}
991	>
992	>	public abstract class CheckedInterruptedCallable<T>
993	>	implements Callable<T> {
994	>	protected abstract T realCall() throws Throwable;
995	>
996	>	public final T call() {
997	>	try {
998	>	T result = realCall();
999	>	threadShouldThrow("InterruptedException");
1000	>	return result;
1001	>	} catch (InterruptedException success) {
1002	>	threadAssertFalse(Thread.interrupted());
1003	>	} catch (Throwable t) {
1004	>	threadUnexpectedException(t);
1005		}
1006	+	return null;
1007	+	}
1008	+	}
1009	+
1010	+	public static class NoOpRunnable implements Runnable {
1011	+	public void run() {}
1012	+	}
1013	+
1014	+	public static class NoOpCallable implements Callable {
1015	+	public Object call() { return Boolean.TRUE; }
1016	+	}
1017	+
1018	+	public static final String TEST_STRING = "a test string";
1019	+
1020	+	public static class StringTask implements Callable<String> {
1021	+	public String call() { return TEST_STRING; }
1022	+	}
1023	+
1024	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1025	+	return new CheckedCallable<String>() {
1026	+	protected String realCall() {
1027	+	try {
1028	+	latch.await();
1029	+	} catch (InterruptedException quittingTime) {}
1030	+	return TEST_STRING;
1031	+	}};
1032	+	}
1033	+
1034	+	public Runnable awaiter(final CountDownLatch latch) {
1035	+	return new CheckedRunnable() {
1036	+	public void realRun() throws InterruptedException {
1037	+	await(latch);
1038	+	}};
1039	+	}
1040	+
1041	+	public void await(CountDownLatch latch) {
1042	+	try {
1043	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1044	+	} catch (Throwable t) {
1045	+	threadUnexpectedException(t);
1046	+	}
1047	+	}
1048	+
1049	+	public void await(Semaphore semaphore) {
1050	+	try {
1051	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1052	+	} catch (Throwable t) {
1053	+	threadUnexpectedException(t);
1054	+	}
1055	+	}
1056	+
1057	+	//     /**
1058	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1059	+	//      */
1060	+	//     public void await(AtomicBoolean flag) {
1061	+	//         await(flag, LONG_DELAY_MS);
1062	+	//     }
1063	+
1064	+	//     /**
1065	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1066	+	//      */
1067	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1068	+	//         long startTime = System.nanoTime();
1069	+	//         while (!flag.get()) {
1070	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1071	+	//                 throw new AssertionFailedError("timed out");
1072	+	//             Thread.yield();
1073	+	//         }
1074	+	//     }
1075	+
1076	+	public static class NPETask implements Callable<String> {
1077	+	public String call() { throw new NullPointerException(); }
1078	+	}
1079	+
1080	+	public static class CallableOne implements Callable<Integer> {
1081	+	public Integer call() { return one; }
1082	+	}
1083	+
1084	+	public class ShortRunnable extends CheckedRunnable {
1085	+	protected void realRun() throws Throwable {
1086	+	delay(SHORT_DELAY_MS);
1087	+	}
1088	+	}
1089	+
1090	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1091	+	protected void realRun() throws InterruptedException {
1092	+	delay(SHORT_DELAY_MS);
1093	+	}
1094	+	}
1095	+
1096	+	public class SmallRunnable extends CheckedRunnable {
1097	+	protected void realRun() throws Throwable {
1098	+	delay(SMALL_DELAY_MS);
1099	+	}
1100	+	}
1101	+
1102	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1103	+	protected void realRun() {
1104	+	try {
1105	+	delay(SMALL_DELAY_MS);
1106	+	} catch (InterruptedException ok) {}
1107	+	}
1108	+	}
1109	+
1110	+	public class SmallCallable extends CheckedCallable {
1111	+	protected Object realCall() throws InterruptedException {
1112	+	delay(SMALL_DELAY_MS);
1113		return Boolean.TRUE;
1114		}
1115		}
1116
1117	<	public class SmallInterruptedRunnable implements Runnable {
1117	>	public class MediumRunnable extends CheckedRunnable {
1118	>	protected void realRun() throws Throwable {
1119	>	delay(MEDIUM_DELAY_MS);
1120	>	}
1121	>	}
1122	>
1123	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1124	>	protected void realRun() throws InterruptedException {
1125	>	delay(MEDIUM_DELAY_MS);
1126	>	}
1127	>	}
1128	>
1129	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1130	>	return new CheckedRunnable() {
1131	>	protected void realRun() {
1132	>	try {
1133	>	delay(timeoutMillis);
1134	>	} catch (InterruptedException ok) {}
1135	>	}};
1136	>	}
1137	>
1138	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1139	>	protected void realRun() {
1140	>	try {
1141	>	delay(MEDIUM_DELAY_MS);
1142	>	} catch (InterruptedException ok) {}
1143	>	}
1144	>	}
1145	>
1146	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1147	>	protected void realRun() {
1148	>	try {
1149	>	delay(LONG_DELAY_MS);
1150	>	} catch (InterruptedException ok) {}
1151	>	}
1152	>	}
1153	>
1154	>	/**
1155	>	* For use as ThreadFactory in constructors
1156	>	*/
1157	>	public static class SimpleThreadFactory implements ThreadFactory {
1158	>	public Thread newThread(Runnable r) {
1159	>	return new Thread(r);
1160	>	}
1161	>	}
1162	>
1163	>	public interface TrackedRunnable extends Runnable {
1164	>	boolean isDone();
1165	>	}
1166	>
1167	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1168	>	return new TrackedRunnable() {
1169	>	private volatile boolean done = false;
1170	>	public boolean isDone() { return done; }
1171	>	public void run() {
1172	>	try {
1173	>	delay(timeoutMillis);
1174	>	done = true;
1175	>	} catch (InterruptedException ok) {}
1176	>	}
1177	>	};
1178	>	}
1179	>
1180	>	public static class TrackedShortRunnable implements Runnable {
1181	>	public volatile boolean done = false;
1182		public void run() {
1183		try {
1184	<	Thread.sleep(SMALL_DELAY_MS);
1185	<	threadFail("should throw IE");
1186	<	}
237	<	catch(InterruptedException success) {
238	<	}
1184	>	delay(SHORT_DELAY_MS);
1185	>	done = true;
1186	>	} catch (InterruptedException ok) {}
1187		}
1188		}
1189
1190	+	public static class TrackedSmallRunnable implements Runnable {
1191	+	public volatile boolean done = false;
1192	+	public void run() {
1193	+	try {
1194	+	delay(SMALL_DELAY_MS);
1195	+	done = true;
1196	+	} catch (InterruptedException ok) {}
1197	+	}
1198	+	}
1199
1200	<	public class MediumRunnable implements Runnable {
1200	>	public static class TrackedMediumRunnable implements Runnable {
1201	>	public volatile boolean done = false;
1202		public void run() {
1203		try {
1204	<	Thread.sleep(MEDIUM_DELAY_MS);
1205	<	}
1206	<	catch(Exception e) {
249	<	threadFail("unexpectedException");
250	<	}
1204	>	delay(MEDIUM_DELAY_MS);
1205	>	done = true;
1206	>	} catch (InterruptedException ok) {}
1207		}
1208		}
1209
1210	<	public class MediumInterruptedRunnable implements Runnable {
1210	>	public static class TrackedLongRunnable implements Runnable {
1211	>	public volatile boolean done = false;
1212		public void run() {
1213		try {
1214	<	Thread.sleep(MEDIUM_DELAY_MS);
1215	<	threadFail("should throw IE");
1214	>	delay(LONG_DELAY_MS);
1215	>	done = true;
1216	>	} catch (InterruptedException ok) {}
1217	>	}
1218	>	}
1219	>
1220	>	public static class TrackedNoOpRunnable implements Runnable {
1221	>	public volatile boolean done = false;
1222	>	public void run() {
1223	>	done = true;
1224	>	}
1225	>	}
1226	>
1227	>	public static class TrackedCallable implements Callable {
1228	>	public volatile boolean done = false;
1229	>	public Object call() {
1230	>	try {
1231	>	delay(SMALL_DELAY_MS);
1232	>	done = true;
1233	>	} catch (InterruptedException ok) {}
1234	>	return Boolean.TRUE;
1235	>	}
1236	>	}
1237	>
1238	>	/**
1239	>	* Analog of CheckedRunnable for RecursiveAction
1240	>	*/
1241	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1242	>	protected abstract void realCompute() throws Throwable;
1243	>
1244	>	@Override protected final void compute() {
1245	>	try {
1246	>	realCompute();
1247	>	} catch (Throwable t) {
1248	>	threadUnexpectedException(t);
1249		}
1250	<	catch(InterruptedException success) {
1250	>	}
1251	>	}
1252	>
1253	>	/**
1254	>	* Analog of CheckedCallable for RecursiveTask
1255	>	*/
1256	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1257	>	protected abstract T realCompute() throws Throwable;
1258	>
1259	>	@Override protected final T compute() {
1260	>	try {
1261	>	return realCompute();
1262	>	} catch (Throwable t) {
1263	>	threadUnexpectedException(t);
1264	>	return null;
1265		}
1266		}
1267		}
1268
1269	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1270	<	public void run() {
1269	>	/**
1270	>	* For use as RejectedExecutionHandler in constructors
1271	>	*/
1272	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1273	>	public void rejectedExecution(Runnable r,
1274	>	ThreadPoolExecutor executor) {}
1275	>	}
1276	>
1277	>	/**
1278	>	* A CyclicBarrier that uses timed await and fails with
1279	>	* AssertionFailedErrors instead of throwing checked exceptions.
1280	>	*/
1281	>	public class CheckedBarrier extends CyclicBarrier {
1282	>	public CheckedBarrier(int parties) { super(parties); }
1283	>
1284	>	public int await() {
1285		try {
1286	<	Thread.sleep(MEDIUM_DELAY_MS);
1286	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1287	>	} catch (TimeoutException e) {
1288	>	throw new AssertionFailedError("timed out");
1289	>	} catch (Exception e) {
1290	>	AssertionFailedError afe =
1291	>	new AssertionFailedError("Unexpected exception: " + e);
1292	>	afe.initCause(e);
1293	>	throw afe;
1294		}
1295	<	catch(InterruptedException success) {
1295	>	}
1296	>	}
1297	>
1298	>	void checkEmpty(BlockingQueue q) {
1299	>	try {
1300	>	assertTrue(q.isEmpty());
1301	>	assertEquals(0, q.size());
1302	>	assertNull(q.peek());
1303	>	assertNull(q.poll());
1304	>	assertNull(q.poll(0, MILLISECONDS));
1305	>	assertEquals(q.toString(), "[]");
1306	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1307	>	assertFalse(q.iterator().hasNext());
1308	>	try {
1309	>	q.element();
1310	>	shouldThrow();
1311	>	} catch (NoSuchElementException success) {}
1312	>	try {
1313	>	q.iterator().next();
1314	>	shouldThrow();
1315	>	} catch (NoSuchElementException success) {}
1316	>	try {
1317	>	q.remove();
1318	>	shouldThrow();
1319	>	} catch (NoSuchElementException success) {}
1320	>	} catch (InterruptedException ie) {
1321	>	threadUnexpectedException(ie);
1322	>	}
1323	>	}
1324	>
1325	>	void assertSerialEquals(Object x, Object y) {
1326	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1327	>	}
1328	>
1329	>	void assertNotSerialEquals(Object x, Object y) {
1330	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1331	>	}
1332	>
1333	>	byte[] serialBytes(Object o) {
1334	>	try {
1335	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1336	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1337	>	oos.writeObject(o);
1338	>	oos.flush();
1339	>	oos.close();
1340	>	return bos.toByteArray();
1341	>	} catch (Throwable t) {
1342	>	threadUnexpectedException(t);
1343	>	return new byte[0];
1344	>	}
1345	>	}
1346	>
1347	>	@SuppressWarnings("unchecked")
1348	>	<T> T serialClone(T o) {
1349	>	try {
1350	>	ObjectInputStream ois = new ObjectInputStream
1351	>	(new ByteArrayInputStream(serialBytes(o)));
1352	>	T clone = (T) ois.readObject();
1353	>	assertSame(o.getClass(), clone.getClass());
1354	>	return clone;
1355	>	} catch (Throwable t) {
1356	>	threadUnexpectedException(t);
1357	>	return null;
1358	>	}
1359	>	}
1360	>
1361	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1362	>	Runnable... throwingActions) {
1363	>	for (Runnable throwingAction : throwingActions) {
1364	>	boolean threw = false;
1365	>	try { throwingAction.run(); }
1366	>	catch (Throwable t) {
1367	>	threw = true;
1368	>	if (!expectedExceptionClass.isInstance(t)) {
1369	>	AssertionFailedError afe =
1370	>	new AssertionFailedError
1371	>	("Expected " + expectedExceptionClass.getName() +
1372	>	", got " + t.getClass().getName());
1373	>	afe.initCause(t);
1374	>	threadUnexpectedException(afe);
1375	>	}
1376		}
1377	+	if (!threw)
1378	+	shouldThrow(expectedExceptionClass.getName());
1379		}
1380		}
274	–
1381		}

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