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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.103 by dl, Wed Mar 20 20:29:02 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	+	protected void runTest() throws Throwable {
132	+	if (profileTests)
133	+	runTestProfiled();
134	+	else
135	+	super.runTest();
136	+	}
137	+
138	+	protected void runTestProfiled() throws Throwable {
139	+	long t0 = System.nanoTime();
140	+	try {
141	+	super.runTest();
142	+	} finally {
143	+	long elapsedMillis =
144	+	(System.nanoTime() - t0) / (1000L * 1000L);
145	+	if (elapsedMillis >= profileThreshold)
146	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
147	+	}
148	+	}
149	+
150	+	/**
151	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
152	+	* Optional command line arg provides the number of iterations to
153	+	* repeat running the tests.
154	+	*/
155	+	public static void main(String[] args) {
156	+	if (useSecurityManager) {
157	+	System.err.println("Setting a permissive security manager");
158	+	Policy.setPolicy(permissivePolicy());
159	+	System.setSecurityManager(new SecurityManager());
160	+	}
161	+	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
162	+
163	+	Test s = suite();
164	+	for (int i = 0; i < iters; ++i) {
165	+	junit.textui.TestRunner.run(s);
166	+	System.gc();
167	+	System.runFinalization();
168	+	}
169	+	System.exit(0);
170	+	}
171	+
172	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
173	+	TestSuite suite = new TestSuite();
174	+	for (Object suiteOrClass : suiteOrClasses) {
175	+	if (suiteOrClass instanceof TestSuite)
176	+	suite.addTest((TestSuite) suiteOrClass);
177	+	else if (suiteOrClass instanceof Class)
178	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
179	+	else
180	+	throw new ClassCastException("not a test suite or class");
181	+	}
182	+	return suite;
183	+	}
184	+
185	+	public static void addNamedTestClasses(TestSuite suite,
186	+	String... testClassNames) {
187	+	for (String testClassName : testClassNames) {
188	+	try {
189	+	Class<?> testClass = Class.forName(testClassName);
190	+	Method m = testClass.getDeclaredMethod("suite",
191	+	new Class<?>[0]);
192	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
193	+	} catch (Exception e) {
194	+	throw new Error("Missing test class", e);
195	+	}
196	+	}
197	+	}
198	+
199	+	public static final double JAVA_CLASS_VERSION;
200	+	static {
201	+	try {
202	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
203	+	new java.security.PrivilegedAction<Double>() {
204	+	public Double run() {
205	+	return Double.valueOf(System.getProperty("java.class.version"));}});
206	+	} catch (Throwable t) {
207	+	throw new Error(t);
208	+	}
209	+	}
210	+
211	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
212	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
213	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
214	+
215	+	/**
216	+	* Collects all JSR166 unit tests as one suite.
217	+	*/
218	+	public static Test suite() {
219	+	// Java7+ test classes
220	+	TestSuite suite = newTestSuite(
221	+	ForkJoinPoolTest.suite(),
222	+	ForkJoinTaskTest.suite(),
223	+	RecursiveActionTest.suite(),
224	+	RecursiveTaskTest.suite(),
225	+	LinkedTransferQueueTest.suite(),
226	+	PhaserTest.suite(),
227	+	ThreadLocalRandomTest.suite(),
228	+	AbstractExecutorServiceTest.suite(),
229	+	AbstractQueueTest.suite(),
230	+	AbstractQueuedSynchronizerTest.suite(),
231	+	AbstractQueuedLongSynchronizerTest.suite(),
232	+	ArrayBlockingQueueTest.suite(),
233	+	ArrayDequeTest.suite(),
234	+	AtomicBooleanTest.suite(),
235	+	AtomicIntegerArrayTest.suite(),
236	+	AtomicIntegerFieldUpdaterTest.suite(),
237	+	AtomicIntegerTest.suite(),
238	+	AtomicLongArrayTest.suite(),
239	+	AtomicLongFieldUpdaterTest.suite(),
240	+	AtomicLongTest.suite(),
241	+	AtomicMarkableReferenceTest.suite(),
242	+	AtomicReferenceArrayTest.suite(),
243	+	AtomicReferenceFieldUpdaterTest.suite(),
244	+	AtomicReferenceTest.suite(),
245	+	AtomicStampedReferenceTest.suite(),
246	+	ConcurrentHashMapTest.suite(),
247	+	ConcurrentLinkedDequeTest.suite(),
248	+	ConcurrentLinkedQueueTest.suite(),
249	+	ConcurrentSkipListMapTest.suite(),
250	+	ConcurrentSkipListSubMapTest.suite(),
251	+	ConcurrentSkipListSetTest.suite(),
252	+	ConcurrentSkipListSubSetTest.suite(),
253	+	CopyOnWriteArrayListTest.suite(),
254	+	CopyOnWriteArraySetTest.suite(),
255	+	CountDownLatchTest.suite(),
256	+	CyclicBarrierTest.suite(),
257	+	DelayQueueTest.suite(),
258	+	EntryTest.suite(),
259	+	ExchangerTest.suite(),
260	+	ExecutorsTest.suite(),
261	+	ExecutorCompletionServiceTest.suite(),
262	+	FutureTaskTest.suite(),
263	+	LinkedBlockingDequeTest.suite(),
264	+	LinkedBlockingQueueTest.suite(),
265	+	LinkedListTest.suite(),
266	+	LockSupportTest.suite(),
267	+	PriorityBlockingQueueTest.suite(),
268	+	PriorityQueueTest.suite(),
269	+	ReentrantLockTest.suite(),
270	+	ReentrantReadWriteLockTest.suite(),
271	+	ScheduledExecutorTest.suite(),
272	+	ScheduledExecutorSubclassTest.suite(),
273	+	SemaphoreTest.suite(),
274	+	SynchronousQueueTest.suite(),
275	+	SystemTest.suite(),
276	+	ThreadLocalTest.suite(),
277	+	ThreadPoolExecutorTest.suite(),
278	+	ThreadPoolExecutorSubclassTest.suite(),
279	+	ThreadTest.suite(),
280	+	TimeUnitTest.suite(),
281	+	TreeMapTest.suite(),
282	+	TreeSetTest.suite(),
283	+	TreeSubMapTest.suite(),
284	+	TreeSubSetTest.suite());
285	+
286	+	// Java8+ test classes
287	+	if (atLeastJava8()) {
288	+	String[] java8TestClassNames = {
289	+	"LongAdderTest",
290	+	"LongAccumulatorTest",
291	+	"DoubleAdderTest",
292	+	"DoubleAccumulatorTest",
293	+	"CompletableFutureTest",
294	+	"ForkJoinPool8Test",
295	+	"StampedLockTest",
296	+	};
297	+	addNamedTestClasses(suite, java8TestClassNames);
298	+	}
299	+
300	+	return suite;
301	+	}
302	+
303
304		public static long SHORT_DELAY_MS;
305		public static long SMALL_DELAY_MS;
#	Line 60 | Line 308 | public class JSR166TestCase extends Test
308
309
310		/**
311	<	* Return the shortest timed delay. This could
312	<	* be reimplmented to use for example a Property.
313	<	*/
311	>	* Returns the shortest timed delay. This could
312	>	* be reimplemented to use for example a Property.
313	>	*/
314		protected long getShortDelay() {
315		return 50;
316		}
317
70	–
318		/**
319	<	* Set delays as multiples fo SHORT_DELAY.
319	>	* Sets delays as multiples of SHORT_DELAY.
320		*/
321	<	protected  void setDelays() {
321	>	protected void setDelays() {
322		SHORT_DELAY_MS = getShortDelay();
323	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
323	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
324		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
325	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
325	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
326	>	}
327	>
328	>	/**
329	>	* Returns a timeout in milliseconds to be used in tests that
330	>	* verify that operations block or time out.
331	>	*/
332	>	long timeoutMillis() {
333	>	return SHORT_DELAY_MS / 4;
334	>	}
335	>
336	>	/**
337	>	* Returns a new Date instance representing a time delayMillis
338	>	* milliseconds in the future.
339	>	*/
340	>	Date delayedDate(long delayMillis) {
341	>	return new Date(System.currentTimeMillis() + delayMillis);
342		}
343
344		/**
345	<	* Flag set true if any threadAssert methods fail
345	>	* The first exception encountered if any threadAssertXXX method fails.
346		*/
347	<	protected volatile boolean threadFailed;
347	>	private final AtomicReference<Throwable> threadFailure
348	>	= new AtomicReference<Throwable>(null);
349
350		/**
351	<	* Initialize test to indicat that no thread assertions have failed
351	>	* Records an exception so that it can be rethrown later in the test
352	>	* harness thread, triggering a test case failure.  Only the first
353	>	* failure is recorded; subsequent calls to this method from within
354	>	* the same test have no effect.
355		*/
356	<	public void setUp() {
356	>	public void threadRecordFailure(Throwable t) {
357	>	threadFailure.compareAndSet(null, t);
358	>	}
359	>
360	>	public void setUp() {
361		setDelays();
91	–	threadFailed = false;
362		}
363
364		/**
365	<	* Trigger test case failure if any thread assertions have failed
365	>	* Extra checks that get done for all test cases.
366	>	*
367	>	* Triggers test case failure if any thread assertions have failed,
368	>	* by rethrowing, in the test harness thread, any exception recorded
369	>	* earlier by threadRecordFailure.
370	>	*
371	>	* Triggers test case failure if interrupt status is set in the main thread.
372		*/
373	<	public void tearDown() {
374	<	assertFalse(threadFailed);
373	>	public void tearDown() throws Exception {
374	>	Throwable t = threadFailure.getAndSet(null);
375	>	if (t != null) {
376	>	if (t instanceof Error)
377	>	throw (Error) t;
378	>	else if (t instanceof RuntimeException)
379	>	throw (RuntimeException) t;
380	>	else if (t instanceof Exception)
381	>	throw (Exception) t;
382	>	else {
383	>	AssertionFailedError afe =
384	>	new AssertionFailedError(t.toString());
385	>	afe.initCause(t);
386	>	throw afe;
387	>	}
388	>	}
389	>
390	>	if (Thread.interrupted())
391	>	throw new AssertionFailedError("interrupt status set in main thread");
392	>
393	>	checkForkJoinPoolThreadLeaks();
394	>	}
395	>
396	>	/**
397	>	* Find missing try { ... } finally { joinPool(e); }
398	>	*/
399	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
400	>	Thread[] survivors = new Thread[5];
401	>	int count = Thread.enumerate(survivors);
402	>	for (int i = 0; i < count; i++) {
403	>	Thread thread = survivors[i];
404	>	String name = thread.getName();
405	>	if (name.startsWith("ForkJoinPool-")) {
406	>	// give thread some time to terminate
407	>	thread.join(LONG_DELAY_MS);
408	>	if (!thread.isAlive()) continue;
409	>	thread.stop();
410	>	throw new AssertionFailedError
411	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
412	>	toString(), name));
413	>	}
414	>	}
415		}
416
417	+	/**
418	+	* Just like fail(reason), but additionally recording (using
419	+	* threadRecordFailure) any AssertionFailedError thrown, so that
420	+	* the current testcase will fail.
421	+	*/
422		public void threadFail(String reason) {
423	<	threadFailed = true;
424	<	fail(reason);
423	>	try {
424	>	fail(reason);
425	>	} catch (AssertionFailedError t) {
426	>	threadRecordFailure(t);
427	>	fail(reason);
428	>	}
429		}
430
431	+	/**
432	+	* Just like assertTrue(b), but additionally recording (using
433	+	* threadRecordFailure) any AssertionFailedError thrown, so that
434	+	* the current testcase will fail.
435	+	*/
436		public void threadAssertTrue(boolean b) {
437	<	if (!b) {
108	<	threadFailed = true;
437	>	try {
438		assertTrue(b);
439	+	} catch (AssertionFailedError t) {
440	+	threadRecordFailure(t);
441	+	throw t;
442		}
443		}
444	+
445	+	/**
446	+	* Just like assertFalse(b), but additionally recording (using
447	+	* threadRecordFailure) any AssertionFailedError thrown, so that
448	+	* the current testcase will fail.
449	+	*/
450		public void threadAssertFalse(boolean b) {
451	<	if (b) {
114	<	threadFailed = true;
451	>	try {
452		assertFalse(b);
453	+	} catch (AssertionFailedError t) {
454	+	threadRecordFailure(t);
455	+	throw t;
456		}
457		}
458	+
459	+	/**
460	+	* Just like assertNull(x), but additionally recording (using
461	+	* threadRecordFailure) any AssertionFailedError thrown, so that
462	+	* the current testcase will fail.
463	+	*/
464		public void threadAssertNull(Object x) {
465	<	if (x != null) {
120	<	threadFailed = true;
465	>	try {
466		assertNull(x);
467	+	} catch (AssertionFailedError t) {
468	+	threadRecordFailure(t);
469	+	throw t;
470		}
471		}
472	+
473	+	/**
474	+	* Just like assertEquals(x, y), but additionally recording (using
475	+	* threadRecordFailure) any AssertionFailedError thrown, so that
476	+	* the current testcase will fail.
477	+	*/
478		public void threadAssertEquals(long x, long y) {
479	<	if (x != y) {
126	<	threadFailed = true;
479	>	try {
480		assertEquals(x, y);
481	+	} catch (AssertionFailedError t) {
482	+	threadRecordFailure(t);
483	+	throw t;
484		}
485		}
486	+
487	+	/**
488	+	* Just like assertEquals(x, y), but additionally recording (using
489	+	* threadRecordFailure) any AssertionFailedError thrown, so that
490	+	* the current testcase will fail.
491	+	*/
492		public void threadAssertEquals(Object x, Object y) {
493	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
493	>	try {
494		assertEquals(x, y);
495	+	} catch (AssertionFailedError t) {
496	+	threadRecordFailure(t);
497	+	throw t;
498	+	} catch (Throwable t) {
499	+	threadUnexpectedException(t);
500	+	}
501	+	}
502	+
503	+	/**
504	+	* Just like assertSame(x, y), but additionally recording (using
505	+	* threadRecordFailure) any AssertionFailedError thrown, so that
506	+	* the current testcase will fail.
507	+	*/
508	+	public void threadAssertSame(Object x, Object y) {
509	+	try {
510	+	assertSame(x, y);
511	+	} catch (AssertionFailedError t) {
512	+	threadRecordFailure(t);
513	+	throw t;
514		}
515		}
516
517	+	/**
518	+	* Calls threadFail with message "should throw exception".
519	+	*/
520		public void threadShouldThrow() {
521	<	threadFailed = true;
139	<	fail("should throw exception");
521	>	threadFail("should throw exception");
522		}
523
524	<	public void threadUnexpectedException() {
525	<	threadFailed = true;
526	<	fail("Unexpected exception");
524	>	/**
525	>	* Calls threadFail with message "should throw" + exceptionName.
526	>	*/
527	>	public void threadShouldThrow(String exceptionName) {
528	>	threadFail("should throw " + exceptionName);
529		}
530
531	+	/**
532	+	* Records the given exception using {@link #threadRecordFailure},
533	+	* then rethrows the exception, wrapping it in an
534	+	* AssertionFailedError if necessary.
535	+	*/
536	+	public void threadUnexpectedException(Throwable t) {
537	+	threadRecordFailure(t);
538	+	t.printStackTrace();
539	+	if (t instanceof RuntimeException)
540	+	throw (RuntimeException) t;
541	+	else if (t instanceof Error)
542	+	throw (Error) t;
543	+	else {
544	+	AssertionFailedError afe =
545	+	new AssertionFailedError("unexpected exception: " + t);
546	+	afe.initCause(t);
547	+	throw afe;
548	+	}
549	+	}
550
551		/**
552	<	* Wait out termination of a thread pool or fail doing so
552	>	* Delays, via Thread.sleep, for the given millisecond delay, but
553	>	* if the sleep is shorter than specified, may re-sleep or yield
554	>	* until time elapses.
555		*/
556	<	public void joinPool(ExecutorService exec) {
556	>	static void delay(long millis) throws InterruptedException {
557	>	long startTime = System.nanoTime();
558	>	long ns = millis * 1000 * 1000;
559	>	for (;;) {
560	>	if (millis > 0L)
561	>	Thread.sleep(millis);
562	>	else // too short to sleep
563	>	Thread.yield();
564	>	long d = ns - (System.nanoTime() - startTime);
565	>	if (d > 0L)
566	>	millis = d / (1000 * 1000);
567	>	else
568	>	break;
569	>	}
570	>	}
571	>
572	>	/**
573	>	* Waits out termination of a thread pool or fails doing so.
574	>	*/
575	>	void joinPool(ExecutorService exec) {
576		try {
577		exec.shutdown();
578	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
579	<	} catch(InterruptedException ie) {
580	<	fail("Unexpected exception");
578	>	assertTrue("ExecutorService did not terminate in a timely manner",
579	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
580	>	} catch (SecurityException ok) {
581	>	// Allowed in case test doesn't have privs
582	>	} catch (InterruptedException ie) {
583	>	fail("Unexpected InterruptedException");
584	>	}
585	>	}
586	>
587	>	/**
588	>	* A debugging tool to print all stack traces, as jstack does.
589	>	*/
590	>	static void printAllStackTraces() {
591	>	for (ThreadInfo info :
592	>	ManagementFactory.getThreadMXBean()
593	>	.dumpAllThreads(true, true))
594	>	System.err.print(info);
595	>	}
596	>
597	>	/**
598	>	* Checks that thread does not terminate within the default
599	>	* millisecond delay of {@code timeoutMillis()}.
600	>	*/
601	>	void assertThreadStaysAlive(Thread thread) {
602	>	assertThreadStaysAlive(thread, timeoutMillis());
603	>	}
604	>
605	>	/**
606	>	* Checks that thread does not terminate within the given millisecond delay.
607	>	*/
608	>	void assertThreadStaysAlive(Thread thread, long millis) {
609	>	try {
610	>	// No need to optimize the failing case via Thread.join.
611	>	delay(millis);
612	>	assertTrue(thread.isAlive());
613	>	} catch (InterruptedException ie) {
614	>	fail("Unexpected InterruptedException");
615		}
616		}
617
618	<
618	>	/**
619	>	* Checks that the threads do not terminate within the default
620	>	* millisecond delay of {@code timeoutMillis()}.
621	>	*/
622	>	void assertThreadsStayAlive(Thread... threads) {
623	>	assertThreadsStayAlive(timeoutMillis(), threads);
624	>	}
625	>
626	>	/**
627	>	* Checks that the threads do not terminate within the given millisecond delay.
628	>	*/
629	>	void assertThreadsStayAlive(long millis, Thread... threads) {
630	>	try {
631	>	// No need to optimize the failing case via Thread.join.
632	>	delay(millis);
633	>	for (Thread thread : threads)
634	>	assertTrue(thread.isAlive());
635	>	} catch (InterruptedException ie) {
636	>	fail("Unexpected InterruptedException");
637	>	}
638	>	}
639	>
640	>	/**
641	>	* Checks that future.get times out, with the default timeout of
642	>	* {@code timeoutMillis()}.
643	>	*/
644	>	void assertFutureTimesOut(Future future) {
645	>	assertFutureTimesOut(future, timeoutMillis());
646	>	}
647	>
648	>	/**
649	>	* Checks that future.get times out, with the given millisecond timeout.
650	>	*/
651	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
652	>	long startTime = System.nanoTime();
653	>	try {
654	>	future.get(timeoutMillis, MILLISECONDS);
655	>	shouldThrow();
656	>	} catch (TimeoutException success) {
657	>	} catch (Exception e) {
658	>	threadUnexpectedException(e);
659	>	} finally { future.cancel(true); }
660	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
661	>	}
662	>
663	>	/**
664	>	* Fails with message "should throw exception".
665	>	*/
666		public void shouldThrow() {
667		fail("Should throw exception");
668		}
669
670	<	public void unexpectedException() {
671	<	fail("Unexpected exception");
670	>	/**
671	>	* Fails with message "should throw " + exceptionName.
672	>	*/
673	>	public void shouldThrow(String exceptionName) {
674	>	fail("Should throw " + exceptionName);
675		}
676
169	–
677		/**
678		* The number of elements to place in collections, arrays, etc.
679		*/
#	Line 174 | Line 681 | public class JSR166TestCase extends Test
681
682		// Some convenient Integer constants
683
684	<	public static final Integer zero = new Integer(0);
685	<	public static final Integer one = new Integer(1);
686	<	public static final Integer two = new Integer(2);
687	<	public static final Integer three  = new Integer(3);
684	>	public static final Integer zero  = new Integer(0);
685	>	public static final Integer one   = new Integer(1);
686	>	public static final Integer two   = new Integer(2);
687	>	public static final Integer three = new Integer(3);
688		public static final Integer four  = new Integer(4);
689		public static final Integer five  = new Integer(5);
690	<	public static final Integer six = new Integer(6);
690	>	public static final Integer six   = new Integer(6);
691		public static final Integer seven = new Integer(7);
692		public static final Integer eight = new Integer(8);
693	<	public static final Integer nine = new Integer(9);
693	>	public static final Integer nine  = new Integer(9);
694		public static final Integer m1  = new Integer(-1);
695		public static final Integer m2  = new Integer(-2);
696		public static final Integer m3  = new Integer(-3);
697	<	public static final Integer m4 = new Integer(-4);
698	<	public static final Integer m5 = new Integer(-5);
697	>	public static final Integer m4  = new Integer(-4);
698	>	public static final Integer m5  = new Integer(-5);
699	>	public static final Integer m6  = new Integer(-6);
700		public static final Integer m10 = new Integer(-10);
701
702
703	<	// Some convenient Runnable classes
703	>	/**
704	>	* Runs Runnable r with a security policy that permits precisely
705	>	* the specified permissions.  If there is no current security
706	>	* manager, the runnable is run twice, both with and without a
707	>	* security manager.  We require that any security manager permit
708	>	* getPolicy/setPolicy.
709	>	*/
710	>	public void runWithPermissions(Runnable r, Permission... permissions) {
711	>	SecurityManager sm = System.getSecurityManager();
712	>	if (sm == null) {
713	>	r.run();
714	>	}
715	>	runWithSecurityManagerWithPermissions(r, permissions);
716	>	}
717
718	<	public static class NoOpRunnable implements Runnable {
719	<	public void run() {}
718	>	/**
719	>	* Runs Runnable r with a security policy that permits precisely
720	>	* the specified permissions.  If there is no current security
721	>	* manager, a temporary one is set for the duration of the
722	>	* Runnable.  We require that any security manager permit
723	>	* getPolicy/setPolicy.
724	>	*/
725	>	public void runWithSecurityManagerWithPermissions(Runnable r,
726	>	Permission... permissions) {
727	>	SecurityManager sm = System.getSecurityManager();
728	>	if (sm == null) {
729	>	Policy savedPolicy = Policy.getPolicy();
730	>	try {
731	>	Policy.setPolicy(permissivePolicy());
732	>	System.setSecurityManager(new SecurityManager());
733	>	runWithSecurityManagerWithPermissions(r, permissions);
734	>	} finally {
735	>	System.setSecurityManager(null);
736	>	Policy.setPolicy(savedPolicy);
737	>	}
738	>	} else {
739	>	Policy savedPolicy = Policy.getPolicy();
740	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
741	>	Policy.setPolicy(policy);
742	>
743	>	try {
744	>	r.run();
745	>	} finally {
746	>	policy.addPermission(new SecurityPermission("setPolicy"));
747	>	Policy.setPolicy(savedPolicy);
748	>	}
749	>	}
750		}
751
752	<	public static class NoOpCallable implements Callable {
753	<	public Object call() { return Boolean.TRUE; }
752	>	/**
753	>	* Runs a runnable without any permissions.
754	>	*/
755	>	public void runWithoutPermissions(Runnable r) {
756	>	runWithPermissions(r);
757		}
758
759	<	public class ShortRunnable implements Runnable {
760	<	public void run() {
761	<	try {
762	<	Thread.sleep(SHORT_DELAY_MS);
759	>	/**
760	>	* A security policy where new permissions can be dynamically added
761	>	* or all cleared.
762	>	*/
763	>	public static class AdjustablePolicy extends java.security.Policy {
764	>	Permissions perms = new Permissions();
765	>	AdjustablePolicy(Permission... permissions) {
766	>	for (Permission permission : permissions)
767	>	perms.add(permission);
768	>	}
769	>	void addPermission(Permission perm) { perms.add(perm); }
770	>	void clearPermissions() { perms = new Permissions(); }
771	>	public PermissionCollection getPermissions(CodeSource cs) {
772	>	return perms;
773	>	}
774	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
775	>	return perms;
776	>	}
777	>	public boolean implies(ProtectionDomain pd, Permission p) {
778	>	return perms.implies(p);
779	>	}
780	>	public void refresh() {}
781	>	public String toString() {
782	>	List<Permission> ps = new ArrayList<Permission>();
783	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
784	>	ps.add(e.nextElement());
785	>	return "AdjustablePolicy with permissions " + ps;
786	>	}
787	>	}
788	>
789	>	/**
790	>	* Returns a policy containing all the permissions we ever need.
791	>	*/
792	>	public static Policy permissivePolicy() {
793	>	return new AdjustablePolicy
794	>	// Permissions j.u.c. needs directly
795	>	(new RuntimePermission("modifyThread"),
796	>	new RuntimePermission("getClassLoader"),
797	>	new RuntimePermission("setContextClassLoader"),
798	>	// Permissions needed to change permissions!
799	>	new SecurityPermission("getPolicy"),
800	>	new SecurityPermission("setPolicy"),
801	>	new RuntimePermission("setSecurityManager"),
802	>	// Permissions needed by the junit test harness
803	>	new RuntimePermission("accessDeclaredMembers"),
804	>	new PropertyPermission("*", "read"),
805	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
806	>	}
807	>
808	>	/**
809	>	* Sleeps until the given time has elapsed.
810	>	* Throws AssertionFailedError if interrupted.
811	>	*/
812	>	void sleep(long millis) {
813	>	try {
814	>	delay(millis);
815	>	} catch (InterruptedException ie) {
816	>	AssertionFailedError afe =
817	>	new AssertionFailedError("Unexpected InterruptedException");
818	>	afe.initCause(ie);
819	>	throw afe;
820	>	}
821	>	}
822	>
823	>	/**
824	>	* Spin-waits up to the specified number of milliseconds for the given
825	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
826	>	*/
827	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
828	>	long startTime = System.nanoTime();
829	>	for (;;) {
830	>	Thread.State s = thread.getState();
831	>	if (s == Thread.State.BLOCKED ||
832	>	s == Thread.State.WAITING ||
833	>	s == Thread.State.TIMED_WAITING)
834	>	return;
835	>	else if (s == Thread.State.TERMINATED)
836	>	fail("Unexpected thread termination");
837	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
838	>	threadAssertTrue(thread.isAlive());
839	>	return;
840		}
841	<	catch(Exception e) {
842	<	threadUnexpectedException();
841	>	Thread.yield();
842	>	}
843	>	}
844	>
845	>	/**
846	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
847	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
848	>	*/
849	>	void waitForThreadToEnterWaitState(Thread thread) {
850	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
851	>	}
852	>
853	>	/**
854	>	* Returns the number of milliseconds since time given by
855	>	* startNanoTime, which must have been previously returned from a
856	>	* call to {@link System.nanoTime()}.
857	>	*/
858	>	long millisElapsedSince(long startNanoTime) {
859	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
860	>	}
861	>
862	>	/**
863	>	* Returns a new started daemon Thread running the given runnable.
864	>	*/
865	>	Thread newStartedThread(Runnable runnable) {
866	>	Thread t = new Thread(runnable);
867	>	t.setDaemon(true);
868	>	t.start();
869	>	return t;
870	>	}
871	>
872	>	/**
873	>	* Waits for the specified time (in milliseconds) for the thread
874	>	* to terminate (using {@link Thread#join(long)}), else interrupts
875	>	* the thread (in the hope that it may terminate later) and fails.
876	>	*/
877	>	void awaitTermination(Thread t, long timeoutMillis) {
878	>	try {
879	>	t.join(timeoutMillis);
880	>	} catch (InterruptedException ie) {
881	>	threadUnexpectedException(ie);
882	>	} finally {
883	>	if (t.getState() != Thread.State.TERMINATED) {
884	>	t.interrupt();
885	>	fail("Test timed out");
886		}
887		}
888		}
889
890	<	public class ShortInterruptedRunnable implements Runnable {
891	<	public void run() {
890	>	/**
891	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
892	>	* terminate (using {@link Thread#join(long)}), else interrupts
893	>	* the thread (in the hope that it may terminate later) and fails.
894	>	*/
895	>	void awaitTermination(Thread t) {
896	>	awaitTermination(t, LONG_DELAY_MS);
897	>	}
898	>
899	>	// Some convenient Runnable classes
900	>
901	>	public abstract class CheckedRunnable implements Runnable {
902	>	protected abstract void realRun() throws Throwable;
903	>
904	>	public final void run() {
905		try {
906	<	Thread.sleep(SHORT_DELAY_MS);
907	<	threadShouldThrow();
906	>	realRun();
907	>	} catch (Throwable t) {
908	>	threadUnexpectedException(t);
909		}
910	<	catch(InterruptedException success) {
910	>	}
911	>	}
912	>
913	>	public abstract class RunnableShouldThrow implements Runnable {
914	>	protected abstract void realRun() throws Throwable;
915	>
916	>	final Class<?> exceptionClass;
917	>
918	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
919	>	this.exceptionClass = exceptionClass;
920	>	}
921	>
922	>	public final void run() {
923	>	try {
924	>	realRun();
925	>	threadShouldThrow(exceptionClass.getSimpleName());
926	>	} catch (Throwable t) {
927	>	if (! exceptionClass.isInstance(t))
928	>	threadUnexpectedException(t);
929		}
930		}
931		}
932
933	<	public class SmallRunnable implements Runnable {
934	<	public void run() {
933	>	public abstract class ThreadShouldThrow extends Thread {
934	>	protected abstract void realRun() throws Throwable;
935	>
936	>	final Class<?> exceptionClass;
937	>
938	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
939	>	this.exceptionClass = exceptionClass;
940	>	}
941	>
942	>	public final void run() {
943		try {
944	<	Thread.sleep(SMALL_DELAY_MS);
944	>	realRun();
945	>	threadShouldThrow(exceptionClass.getSimpleName());
946	>	} catch (Throwable t) {
947	>	if (! exceptionClass.isInstance(t))
948	>	threadUnexpectedException(t);
949		}
950	<	catch(Exception e) {
951	<	threadUnexpectedException();
950	>	}
951	>	}
952	>
953	>	public abstract class CheckedInterruptedRunnable implements Runnable {
954	>	protected abstract void realRun() throws Throwable;
955	>
956	>	public final void run() {
957	>	try {
958	>	realRun();
959	>	threadShouldThrow("InterruptedException");
960	>	} catch (InterruptedException success) {
961	>	threadAssertFalse(Thread.interrupted());
962	>	} catch (Throwable t) {
963	>	threadUnexpectedException(t);
964		}
965		}
966		}
967
968	<	public class SmallCallable implements Callable {
969	<	public Object call() {
968	>	public abstract class CheckedCallable<T> implements Callable<T> {
969	>	protected abstract T realCall() throws Throwable;
970	>
971	>	public final T call() {
972		try {
973	<	Thread.sleep(SMALL_DELAY_MS);
973	>	return realCall();
974	>	} catch (Throwable t) {
975	>	threadUnexpectedException(t);
976	>	return null;
977		}
978	<	catch(Exception e) {
979	<	threadUnexpectedException();
978	>	}
979	>	}
980	>
981	>	public abstract class CheckedInterruptedCallable<T>
982	>	implements Callable<T> {
983	>	protected abstract T realCall() throws Throwable;
984	>
985	>	public final T call() {
986	>	try {
987	>	T result = realCall();
988	>	threadShouldThrow("InterruptedException");
989	>	return result;
990	>	} catch (InterruptedException success) {
991	>	threadAssertFalse(Thread.interrupted());
992	>	} catch (Throwable t) {
993	>	threadUnexpectedException(t);
994		}
995	+	return null;
996	+	}
997	+	}
998	+
999	+	public static class NoOpRunnable implements Runnable {
1000	+	public void run() {}
1001	+	}
1002	+
1003	+	public static class NoOpCallable implements Callable {
1004	+	public Object call() { return Boolean.TRUE; }
1005	+	}
1006	+
1007	+	public static final String TEST_STRING = "a test string";
1008	+
1009	+	public static class StringTask implements Callable<String> {
1010	+	public String call() { return TEST_STRING; }
1011	+	}
1012	+
1013	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1014	+	return new CheckedCallable<String>() {
1015	+	protected String realCall() {
1016	+	try {
1017	+	latch.await();
1018	+	} catch (InterruptedException quittingTime) {}
1019	+	return TEST_STRING;
1020	+	}};
1021	+	}
1022	+
1023	+	public Runnable awaiter(final CountDownLatch latch) {
1024	+	return new CheckedRunnable() {
1025	+	public void realRun() throws InterruptedException {
1026	+	await(latch);
1027	+	}};
1028	+	}
1029	+
1030	+	public void await(CountDownLatch latch) {
1031	+	try {
1032	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1033	+	} catch (Throwable t) {
1034	+	threadUnexpectedException(t);
1035	+	}
1036	+	}
1037	+
1038	+	public void await(Semaphore semaphore) {
1039	+	try {
1040	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1041	+	} catch (Throwable t) {
1042	+	threadUnexpectedException(t);
1043	+	}
1044	+	}
1045	+
1046	+	//     /**
1047	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1048	+	//      */
1049	+	//     public void await(AtomicBoolean flag) {
1050	+	//         await(flag, LONG_DELAY_MS);
1051	+	//     }
1052	+
1053	+	//     /**
1054	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1055	+	//      */
1056	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1057	+	//         long startTime = System.nanoTime();
1058	+	//         while (!flag.get()) {
1059	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1060	+	//                 throw new AssertionFailedError("timed out");
1061	+	//             Thread.yield();
1062	+	//         }
1063	+	//     }
1064	+
1065	+	public static class NPETask implements Callable<String> {
1066	+	public String call() { throw new NullPointerException(); }
1067	+	}
1068	+
1069	+	public static class CallableOne implements Callable<Integer> {
1070	+	public Integer call() { return one; }
1071	+	}
1072	+
1073	+	public class ShortRunnable extends CheckedRunnable {
1074	+	protected void realRun() throws Throwable {
1075	+	delay(SHORT_DELAY_MS);
1076	+	}
1077	+	}
1078	+
1079	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1080	+	protected void realRun() throws InterruptedException {
1081	+	delay(SHORT_DELAY_MS);
1082	+	}
1083	+	}
1084	+
1085	+	public class SmallRunnable extends CheckedRunnable {
1086	+	protected void realRun() throws Throwable {
1087	+	delay(SMALL_DELAY_MS);
1088	+	}
1089	+	}
1090	+
1091	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1092	+	protected void realRun() {
1093	+	try {
1094	+	delay(SMALL_DELAY_MS);
1095	+	} catch (InterruptedException ok) {}
1096	+	}
1097	+	}
1098	+
1099	+	public class SmallCallable extends CheckedCallable {
1100	+	protected Object realCall() throws InterruptedException {
1101	+	delay(SMALL_DELAY_MS);
1102		return Boolean.TRUE;
1103		}
1104		}
1105
1106	<	public class SmallInterruptedRunnable implements Runnable {
1106	>	public class MediumRunnable extends CheckedRunnable {
1107	>	protected void realRun() throws Throwable {
1108	>	delay(MEDIUM_DELAY_MS);
1109	>	}
1110	>	}
1111	>
1112	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1113	>	protected void realRun() throws InterruptedException {
1114	>	delay(MEDIUM_DELAY_MS);
1115	>	}
1116	>	}
1117	>
1118	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1119	>	return new CheckedRunnable() {
1120	>	protected void realRun() {
1121	>	try {
1122	>	delay(timeoutMillis);
1123	>	} catch (InterruptedException ok) {}
1124	>	}};
1125	>	}
1126	>
1127	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1128	>	protected void realRun() {
1129	>	try {
1130	>	delay(MEDIUM_DELAY_MS);
1131	>	} catch (InterruptedException ok) {}
1132	>	}
1133	>	}
1134	>
1135	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1136	>	protected void realRun() {
1137	>	try {
1138	>	delay(LONG_DELAY_MS);
1139	>	} catch (InterruptedException ok) {}
1140	>	}
1141	>	}
1142	>
1143	>	/**
1144	>	* For use as ThreadFactory in constructors
1145	>	*/
1146	>	public static class SimpleThreadFactory implements ThreadFactory {
1147	>	public Thread newThread(Runnable r) {
1148	>	return new Thread(r);
1149	>	}
1150	>	}
1151	>
1152	>	public interface TrackedRunnable extends Runnable {
1153	>	boolean isDone();
1154	>	}
1155	>
1156	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1157	>	return new TrackedRunnable() {
1158	>	private volatile boolean done = false;
1159	>	public boolean isDone() { return done; }
1160	>	public void run() {
1161	>	try {
1162	>	delay(timeoutMillis);
1163	>	done = true;
1164	>	} catch (InterruptedException ok) {}
1165	>	}
1166	>	};
1167	>	}
1168	>
1169	>	public static class TrackedShortRunnable implements Runnable {
1170	>	public volatile boolean done = false;
1171		public void run() {
1172		try {
1173	<	Thread.sleep(SMALL_DELAY_MS);
1174	<	threadShouldThrow();
1175	<	}
256	<	catch(InterruptedException success) {
257	<	}
1173	>	delay(SHORT_DELAY_MS);
1174	>	done = true;
1175	>	} catch (InterruptedException ok) {}
1176		}
1177		}
1178
1179	+	public static class TrackedSmallRunnable implements Runnable {
1180	+	public volatile boolean done = false;
1181	+	public void run() {
1182	+	try {
1183	+	delay(SMALL_DELAY_MS);
1184	+	done = true;
1185	+	} catch (InterruptedException ok) {}
1186	+	}
1187	+	}
1188
1189	<	public class MediumRunnable implements Runnable {
1189	>	public static class TrackedMediumRunnable implements Runnable {
1190	>	public volatile boolean done = false;
1191		public void run() {
1192		try {
1193	<	Thread.sleep(MEDIUM_DELAY_MS);
1194	<	}
1195	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
1193	>	delay(MEDIUM_DELAY_MS);
1194	>	done = true;
1195	>	} catch (InterruptedException ok) {}
1196		}
1197		}
1198
1199	<	public class MediumInterruptedRunnable implements Runnable {
1199	>	public static class TrackedLongRunnable implements Runnable {
1200	>	public volatile boolean done = false;
1201		public void run() {
1202		try {
1203	<	Thread.sleep(MEDIUM_DELAY_MS);
1204	<	threadShouldThrow();
1205	<	}
279	<	catch(InterruptedException success) {
280	<	}
1203	>	delay(LONG_DELAY_MS);
1204	>	done = true;
1205	>	} catch (InterruptedException ok) {}
1206		}
1207		}
1208
1209	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1209	>	public static class TrackedNoOpRunnable implements Runnable {
1210	>	public volatile boolean done = false;
1211		public void run() {
1212	+	done = true;
1213	+	}
1214	+	}
1215	+
1216	+	public static class TrackedCallable implements Callable {
1217	+	public volatile boolean done = false;
1218	+	public Object call() {
1219		try {
1220	<	Thread.sleep(MEDIUM_DELAY_MS);
1220	>	delay(SMALL_DELAY_MS);
1221	>	done = true;
1222	>	} catch (InterruptedException ok) {}
1223	>	return Boolean.TRUE;
1224	>	}
1225	>	}
1226	>
1227	>	/**
1228	>	* Analog of CheckedRunnable for RecursiveAction
1229	>	*/
1230	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1231	>	protected abstract void realCompute() throws Throwable;
1232	>
1233	>	public final void compute() {
1234	>	try {
1235	>	realCompute();
1236	>	} catch (Throwable t) {
1237	>	threadUnexpectedException(t);
1238		}
1239	<	catch(InterruptedException success) {
1239	>	}
1240	>	}
1241	>
1242	>	/**
1243	>	* Analog of CheckedCallable for RecursiveTask
1244	>	*/
1245	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1246	>	protected abstract T realCompute() throws Throwable;
1247	>
1248	>	public final T compute() {
1249	>	try {
1250	>	return realCompute();
1251	>	} catch (Throwable t) {
1252	>	threadUnexpectedException(t);
1253	>	return null;
1254		}
1255		}
1256		}
1257	<
1257	>
1258	>	/**
1259	>	* For use as RejectedExecutionHandler in constructors
1260	>	*/
1261	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1262	>	public void rejectedExecution(Runnable r,
1263	>	ThreadPoolExecutor executor) {}
1264	>	}
1265	>
1266	>	/**
1267	>	* A CyclicBarrier that uses timed await and fails with
1268	>	* AssertionFailedErrors instead of throwing checked exceptions.
1269	>	*/
1270	>	public class CheckedBarrier extends CyclicBarrier {
1271	>	public CheckedBarrier(int parties) { super(parties); }
1272	>
1273	>	public int await() {
1274	>	try {
1275	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1276	>	} catch (TimeoutException e) {
1277	>	throw new AssertionFailedError("timed out");
1278	>	} catch (Exception e) {
1279	>	AssertionFailedError afe =
1280	>	new AssertionFailedError("Unexpected exception: " + e);
1281	>	afe.initCause(e);
1282	>	throw afe;
1283	>	}
1284	>	}
1285	>	}
1286	>
1287	>	void checkEmpty(BlockingQueue q) {
1288	>	try {
1289	>	assertTrue(q.isEmpty());
1290	>	assertEquals(0, q.size());
1291	>	assertNull(q.peek());
1292	>	assertNull(q.poll());
1293	>	assertNull(q.poll(0, MILLISECONDS));
1294	>	assertEquals(q.toString(), "[]");
1295	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1296	>	assertFalse(q.iterator().hasNext());
1297	>	try {
1298	>	q.element();
1299	>	shouldThrow();
1300	>	} catch (NoSuchElementException success) {}
1301	>	try {
1302	>	q.iterator().next();
1303	>	shouldThrow();
1304	>	} catch (NoSuchElementException success) {}
1305	>	try {
1306	>	q.remove();
1307	>	shouldThrow();
1308	>	} catch (NoSuchElementException success) {}
1309	>	} catch (InterruptedException ie) {
1310	>	threadUnexpectedException(ie);
1311	>	}
1312	>	}
1313	>
1314	>	void assertSerialEquals(Object x, Object y) {
1315	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1316	>	}
1317	>
1318	>	void assertNotSerialEquals(Object x, Object y) {
1319	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1320	>	}
1321	>
1322	>	byte[] serialBytes(Object o) {
1323	>	try {
1324	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1325	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1326	>	oos.writeObject(o);
1327	>	oos.flush();
1328	>	oos.close();
1329	>	return bos.toByteArray();
1330	>	} catch (Throwable t) {
1331	>	threadUnexpectedException(t);
1332	>	return new byte[0];
1333	>	}
1334	>	}
1335	>
1336	>	@SuppressWarnings("unchecked")
1337	>	<T> T serialClone(T o) {
1338	>	try {
1339	>	ObjectInputStream ois = new ObjectInputStream
1340	>	(new ByteArrayInputStream(serialBytes(o)));
1341	>	T clone = (T) ois.readObject();
1342	>	assertSame(o.getClass(), clone.getClass());
1343	>	return clone;
1344	>	} catch (Throwable t) {
1345	>	threadUnexpectedException(t);
1346	>	return null;
1347	>	}
1348	>	}
1349		}

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