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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.4 by dl, Thu Sep 25 11:02:41 2003 UTC vs.
Revision 1.112 by jsr166, Fri Aug 16 07:07:01 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	+	"ThreadLocalRandom8Test",
309	+	};
310	+	addNamedTestClasses(suite, java8TestClassNames);
311	+	}
312	+
313	+	return suite;
314	+	}
315	+
316	+	// Delays for timing-dependent tests, in milliseconds.
317
318		public static long SHORT_DELAY_MS;
319		public static long SMALL_DELAY_MS;
320		public static long MEDIUM_DELAY_MS;
321		public static long LONG_DELAY_MS;
322
61	–
323		/**
324	<	* Return the shortest timed delay. This could
325	<	* be reimplmented to use for example a Property.
326	<	*/
324	>	* Returns the shortest timed delay. This could
325	>	* be reimplemented to use for example a Property.
326	>	*/
327		protected long getShortDelay() {
328	<	return 100;
328	>	return 50;
329		}
330
70	–
331		/**
332	<	* Set delays as multiples fo SHORT_DELAY.
332	>	* Sets delays as multiples of SHORT_DELAY.
333		*/
334	<	protected  void setDelays() {
334	>	protected void setDelays() {
335		SHORT_DELAY_MS = getShortDelay();
336	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
336	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
337		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
338	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
338	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
339	>	}
340	>
341	>	/**
342	>	* Returns a timeout in milliseconds to be used in tests that
343	>	* verify that operations block or time out.
344	>	*/
345	>	long timeoutMillis() {
346	>	return SHORT_DELAY_MS / 4;
347		}
348
349		/**
350	<	* Flag set true if any threadAssert methods fail
350	>	* Returns a new Date instance representing a time delayMillis
351	>	* milliseconds in the future.
352		*/
353	<	protected volatile boolean threadFailed;
353	>	Date delayedDate(long delayMillis) {
354	>	return new Date(System.currentTimeMillis() + delayMillis);
355	>	}
356	>
357	>	/**
358	>	* The first exception encountered if any threadAssertXXX method fails.
359	>	*/
360	>	private final AtomicReference<Throwable> threadFailure
361	>	= new AtomicReference<Throwable>(null);
362
363		/**
364	<	* Initialize test to indicate that no thread assertions have failed
364	>	* Records an exception so that it can be rethrown later in the test
365	>	* harness thread, triggering a test case failure.  Only the first
366	>	* failure is recorded; subsequent calls to this method from within
367	>	* the same test have no effect.
368		*/
369	<	public void setUp() {
369	>	public void threadRecordFailure(Throwable t) {
370	>	threadFailure.compareAndSet(null, t);
371	>	}
372	>
373	>	public void setUp() {
374		setDelays();
91	–	threadFailed = false;
375		}
376
377		/**
378	<	* Trigger test case failure if any thread assertions have failed
378	>	* Extra checks that get done for all test cases.
379	>	*
380	>	* Triggers test case failure if any thread assertions have failed,
381	>	* by rethrowing, in the test harness thread, any exception recorded
382	>	* earlier by threadRecordFailure.
383	>	*
384	>	* Triggers test case failure if interrupt status is set in the main thread.
385		*/
386	<	public void tearDown() {
387	<	assertFalse(threadFailed);
386	>	public void tearDown() throws Exception {
387	>	Throwable t = threadFailure.getAndSet(null);
388	>	if (t != null) {
389	>	if (t instanceof Error)
390	>	throw (Error) t;
391	>	else if (t instanceof RuntimeException)
392	>	throw (RuntimeException) t;
393	>	else if (t instanceof Exception)
394	>	throw (Exception) t;
395	>	else {
396	>	AssertionFailedError afe =
397	>	new AssertionFailedError(t.toString());
398	>	afe.initCause(t);
399	>	throw afe;
400	>	}
401	>	}
402	>
403	>	if (Thread.interrupted())
404	>	throw new AssertionFailedError("interrupt status set in main thread");
405	>
406	>	checkForkJoinPoolThreadLeaks();
407		}
408
409	+	/**
410	+	* Find missing try { ... } finally { joinPool(e); }
411	+	*/
412	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
413	+	Thread[] survivors = new Thread[5];
414	+	int count = Thread.enumerate(survivors);
415	+	for (int i = 0; i < count; i++) {
416	+	Thread thread = survivors[i];
417	+	String name = thread.getName();
418	+	if (name.startsWith("ForkJoinPool-")) {
419	+	// give thread some time to terminate
420	+	thread.join(LONG_DELAY_MS);
421	+	if (!thread.isAlive()) continue;
422	+	thread.stop();
423	+	throw new AssertionFailedError
424	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
425	+	toString(), name));
426	+	}
427	+	}
428	+	}
429	+
430	+	/**
431	+	* Just like fail(reason), but additionally recording (using
432	+	* threadRecordFailure) any AssertionFailedError thrown, so that
433	+	* the current testcase will fail.
434	+	*/
435		public void threadFail(String reason) {
436	<	threadFailed = true;
437	<	fail(reason);
436	>	try {
437	>	fail(reason);
438	>	} catch (AssertionFailedError t) {
439	>	threadRecordFailure(t);
440	>	fail(reason);
441	>	}
442		}
443
444	+	/**
445	+	* Just like assertTrue(b), but additionally recording (using
446	+	* threadRecordFailure) any AssertionFailedError thrown, so that
447	+	* the current testcase will fail.
448	+	*/
449		public void threadAssertTrue(boolean b) {
450	<	if (!b) {
108	<	threadFailed = true;
450	>	try {
451		assertTrue(b);
452	+	} catch (AssertionFailedError t) {
453	+	threadRecordFailure(t);
454	+	throw t;
455		}
456		}
457	+
458	+	/**
459	+	* Just like assertFalse(b), but additionally recording (using
460	+	* threadRecordFailure) any AssertionFailedError thrown, so that
461	+	* the current testcase will fail.
462	+	*/
463		public void threadAssertFalse(boolean b) {
464	<	if (b) {
114	<	threadFailed = true;
464	>	try {
465		assertFalse(b);
466	+	} catch (AssertionFailedError t) {
467	+	threadRecordFailure(t);
468	+	throw t;
469		}
470		}
471	+
472	+	/**
473	+	* Just like assertNull(x), but additionally recording (using
474	+	* threadRecordFailure) any AssertionFailedError thrown, so that
475	+	* the current testcase will fail.
476	+	*/
477		public void threadAssertNull(Object x) {
478	<	if (x != null) {
120	<	threadFailed = true;
478	>	try {
479		assertNull(x);
480	+	} catch (AssertionFailedError t) {
481	+	threadRecordFailure(t);
482	+	throw t;
483		}
484		}
485	+
486	+	/**
487	+	* Just like assertEquals(x, y), but additionally recording (using
488	+	* threadRecordFailure) any AssertionFailedError thrown, so that
489	+	* the current testcase will fail.
490	+	*/
491		public void threadAssertEquals(long x, long y) {
492	<	if (x != y) {
126	<	threadFailed = true;
492	>	try {
493		assertEquals(x, y);
494	+	} catch (AssertionFailedError t) {
495	+	threadRecordFailure(t);
496	+	throw t;
497		}
498		}
499	+
500	+	/**
501	+	* Just like assertEquals(x, y), but additionally recording (using
502	+	* threadRecordFailure) any AssertionFailedError thrown, so that
503	+	* the current testcase will fail.
504	+	*/
505		public void threadAssertEquals(Object x, Object y) {
506	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
506	>	try {
507		assertEquals(x, y);
508	+	} catch (AssertionFailedError t) {
509	+	threadRecordFailure(t);
510	+	throw t;
511	+	} catch (Throwable t) {
512	+	threadUnexpectedException(t);
513	+	}
514	+	}
515	+
516	+	/**
517	+	* Just like assertSame(x, y), but additionally recording (using
518	+	* threadRecordFailure) any AssertionFailedError thrown, so that
519	+	* the current testcase will fail.
520	+	*/
521	+	public void threadAssertSame(Object x, Object y) {
522	+	try {
523	+	assertSame(x, y);
524	+	} catch (AssertionFailedError t) {
525	+	threadRecordFailure(t);
526	+	throw t;
527		}
528		}
529
530	+	/**
531	+	* Calls threadFail with message "should throw exception".
532	+	*/
533		public void threadShouldThrow() {
534	<	threadFailed = true;
139	<	fail("should throw exception");
534	>	threadFail("should throw exception");
535		}
536
537	<	public void threadUnexpectedException() {
538	<	threadFailed = true;
539	<	fail("Unexpected exception");
537	>	/**
538	>	* Calls threadFail with message "should throw" + exceptionName.
539	>	*/
540	>	public void threadShouldThrow(String exceptionName) {
541	>	threadFail("should throw " + exceptionName);
542	>	}
543	>
544	>	/**
545	>	* Records the given exception using {@link #threadRecordFailure},
546	>	* then rethrows the exception, wrapping it in an
547	>	* AssertionFailedError if necessary.
548	>	*/
549	>	public void threadUnexpectedException(Throwable t) {
550	>	threadRecordFailure(t);
551	>	t.printStackTrace();
552	>	if (t instanceof RuntimeException)
553	>	throw (RuntimeException) t;
554	>	else if (t instanceof Error)
555	>	throw (Error) t;
556	>	else {
557	>	AssertionFailedError afe =
558	>	new AssertionFailedError("unexpected exception: " + t);
559	>	afe.initCause(t);
560	>	throw afe;
561	>	}
562		}
563
564	+	/**
565	+	* Delays, via Thread.sleep, for the given millisecond delay, but
566	+	* if the sleep is shorter than specified, may re-sleep or yield
567	+	* until time elapses.
568	+	*/
569	+	static void delay(long millis) throws InterruptedException {
570	+	long startTime = System.nanoTime();
571	+	long ns = millis * 1000 * 1000;
572	+	for (;;) {
573	+	if (millis > 0L)
574	+	Thread.sleep(millis);
575	+	else // too short to sleep
576	+	Thread.yield();
577	+	long d = ns - (System.nanoTime() - startTime);
578	+	if (d > 0L)
579	+	millis = d / (1000 * 1000);
580	+	else
581	+	break;
582	+	}
583	+	}
584
585		/**
586	<	* Wait out termination of a thread pool or fail doing so
586	>	* Waits out termination of a thread pool or fails doing so.
587		*/
588	<	public void joinPool(ExecutorService exec) {
588	>	void joinPool(ExecutorService exec) {
589		try {
590		exec.shutdown();
591	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
592	<	} catch(InterruptedException ie) {
593	<	fail("Unexpected exception");
591	>	assertTrue("ExecutorService did not terminate in a timely manner",
592	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
593	>	} catch (SecurityException ok) {
594	>	// Allowed in case test doesn't have privs
595	>	} catch (InterruptedException ie) {
596	>	fail("Unexpected InterruptedException");
597	>	}
598	>	}
599	>
600	>	/**
601	>	* A debugging tool to print all stack traces, as jstack does.
602	>	*/
603	>	static void printAllStackTraces() {
604	>	for (ThreadInfo info :
605	>	ManagementFactory.getThreadMXBean()
606	>	.dumpAllThreads(true, true))
607	>	System.err.print(info);
608	>	}
609	>
610	>	/**
611	>	* Checks that thread does not terminate within the default
612	>	* millisecond delay of {@code timeoutMillis()}.
613	>	*/
614	>	void assertThreadStaysAlive(Thread thread) {
615	>	assertThreadStaysAlive(thread, timeoutMillis());
616	>	}
617	>
618	>	/**
619	>	* Checks that thread does not terminate within the given millisecond delay.
620	>	*/
621	>	void assertThreadStaysAlive(Thread thread, long millis) {
622	>	try {
623	>	// No need to optimize the failing case via Thread.join.
624	>	delay(millis);
625	>	assertTrue(thread.isAlive());
626	>	} catch (InterruptedException ie) {
627	>	fail("Unexpected InterruptedException");
628	>	}
629	>	}
630	>
631	>	/**
632	>	* Checks that the threads do not terminate within the default
633	>	* millisecond delay of {@code timeoutMillis()}.
634	>	*/
635	>	void assertThreadsStayAlive(Thread... threads) {
636	>	assertThreadsStayAlive(timeoutMillis(), threads);
637	>	}
638	>
639	>	/**
640	>	* Checks that the threads do not terminate within the given millisecond delay.
641	>	*/
642	>	void assertThreadsStayAlive(long millis, Thread... threads) {
643	>	try {
644	>	// No need to optimize the failing case via Thread.join.
645	>	delay(millis);
646	>	for (Thread thread : threads)
647	>	assertTrue(thread.isAlive());
648	>	} catch (InterruptedException ie) {
649	>	fail("Unexpected InterruptedException");
650		}
651		}
652
653	<
653	>	/**
654	>	* Checks that future.get times out, with the default timeout of
655	>	* {@code timeoutMillis()}.
656	>	*/
657	>	void assertFutureTimesOut(Future future) {
658	>	assertFutureTimesOut(future, timeoutMillis());
659	>	}
660	>
661	>	/**
662	>	* Checks that future.get times out, with the given millisecond timeout.
663	>	*/
664	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
665	>	long startTime = System.nanoTime();
666	>	try {
667	>	future.get(timeoutMillis, MILLISECONDS);
668	>	shouldThrow();
669	>	} catch (TimeoutException success) {
670	>	} catch (Exception e) {
671	>	threadUnexpectedException(e);
672	>	} finally { future.cancel(true); }
673	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
674	>	}
675	>
676	>	/**
677	>	* Fails with message "should throw exception".
678	>	*/
679		public void shouldThrow() {
680		fail("Should throw exception");
681		}
682
683	<	public void unexpectedException() {
684	<	fail("Unexpected exception");
683	>	/**
684	>	* Fails with message "should throw " + exceptionName.
685	>	*/
686	>	public void shouldThrow(String exceptionName) {
687	>	fail("Should throw " + exceptionName);
688		}
689
169	–
690		/**
691		* The number of elements to place in collections, arrays, etc.
692		*/
#	Line 174 | Line 694 | public class JSR166TestCase extends Test
694
695		// Some convenient Integer constants
696
697	<	public static final Integer zero = new Integer(0);
698	<	public static final Integer one = new Integer(1);
699	<	public static final Integer two = new Integer(2);
700	<	public static final Integer three  = new Integer(3);
697	>	public static final Integer zero  = new Integer(0);
698	>	public static final Integer one   = new Integer(1);
699	>	public static final Integer two   = new Integer(2);
700	>	public static final Integer three = new Integer(3);
701		public static final Integer four  = new Integer(4);
702		public static final Integer five  = new Integer(5);
703	<	public static final Integer six = new Integer(6);
703	>	public static final Integer six   = new Integer(6);
704		public static final Integer seven = new Integer(7);
705		public static final Integer eight = new Integer(8);
706	<	public static final Integer nine = new Integer(9);
706	>	public static final Integer nine  = new Integer(9);
707		public static final Integer m1  = new Integer(-1);
708		public static final Integer m2  = new Integer(-2);
709		public static final Integer m3  = new Integer(-3);
710	<	public static final Integer m4 = new Integer(-4);
711	<	public static final Integer m5 = new Integer(-5);
710	>	public static final Integer m4  = new Integer(-4);
711	>	public static final Integer m5  = new Integer(-5);
712	>	public static final Integer m6  = new Integer(-6);
713		public static final Integer m10 = new Integer(-10);
714
715	+	/**
716	+	* Runs Runnable r with a security policy that permits precisely
717	+	* the specified permissions.  If there is no current security
718	+	* manager, the runnable is run twice, both with and without a
719	+	* security manager.  We require that any security manager permit
720	+	* getPolicy/setPolicy.
721	+	*/
722	+	public void runWithPermissions(Runnable r, Permission... permissions) {
723	+	SecurityManager sm = System.getSecurityManager();
724	+	if (sm == null) {
725	+	r.run();
726	+	}
727	+	runWithSecurityManagerWithPermissions(r, permissions);
728	+	}
729
730	<	// Some convenient Runnable classes
730	>	/**
731	>	* Runs Runnable r with a security policy that permits precisely
732	>	* the specified permissions.  If there is no current security
733	>	* manager, a temporary one is set for the duration of the
734	>	* Runnable.  We require that any security manager permit
735	>	* getPolicy/setPolicy.
736	>	*/
737	>	public void runWithSecurityManagerWithPermissions(Runnable r,
738	>	Permission... permissions) {
739	>	SecurityManager sm = System.getSecurityManager();
740	>	if (sm == null) {
741	>	Policy savedPolicy = Policy.getPolicy();
742	>	try {
743	>	Policy.setPolicy(permissivePolicy());
744	>	System.setSecurityManager(new SecurityManager());
745	>	runWithSecurityManagerWithPermissions(r, permissions);
746	>	} finally {
747	>	System.setSecurityManager(null);
748	>	Policy.setPolicy(savedPolicy);
749	>	}
750	>	} else {
751	>	Policy savedPolicy = Policy.getPolicy();
752	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
753	>	Policy.setPolicy(policy);
754
755	<	public static class NoOpRunnable implements Runnable {
756	<	public void run() {}
755	>	try {
756	>	r.run();
757	>	} finally {
758	>	policy.addPermission(new SecurityPermission("setPolicy"));
759	>	Policy.setPolicy(savedPolicy);
760	>	}
761	>	}
762		}
763
764	<	public static class NoOpCallable implements Callable {
765	<	public Object call() { return Boolean.TRUE; }
764	>	/**
765	>	* Runs a runnable without any permissions.
766	>	*/
767	>	public void runWithoutPermissions(Runnable r) {
768	>	runWithPermissions(r);
769		}
770
771	<	public class ShortRunnable implements Runnable {
772	<	public void run() {
773	<	try {
774	<	Thread.sleep(SHORT_DELAY_MS);
771	>	/**
772	>	* A security policy where new permissions can be dynamically added
773	>	* or all cleared.
774	>	*/
775	>	public static class AdjustablePolicy extends java.security.Policy {
776	>	Permissions perms = new Permissions();
777	>	AdjustablePolicy(Permission... permissions) {
778	>	for (Permission permission : permissions)
779	>	perms.add(permission);
780	>	}
781	>	void addPermission(Permission perm) { perms.add(perm); }
782	>	void clearPermissions() { perms = new Permissions(); }
783	>	public PermissionCollection getPermissions(CodeSource cs) {
784	>	return perms;
785	>	}
786	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
787	>	return perms;
788	>	}
789	>	public boolean implies(ProtectionDomain pd, Permission p) {
790	>	return perms.implies(p);
791	>	}
792	>	public void refresh() {}
793	>	public String toString() {
794	>	List<Permission> ps = new ArrayList<Permission>();
795	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
796	>	ps.add(e.nextElement());
797	>	return "AdjustablePolicy with permissions " + ps;
798	>	}
799	>	}
800	>
801	>	/**
802	>	* Returns a policy containing all the permissions we ever need.
803	>	*/
804	>	public static Policy permissivePolicy() {
805	>	return new AdjustablePolicy
806	>	// Permissions j.u.c. needs directly
807	>	(new RuntimePermission("modifyThread"),
808	>	new RuntimePermission("getClassLoader"),
809	>	new RuntimePermission("setContextClassLoader"),
810	>	// Permissions needed to change permissions!
811	>	new SecurityPermission("getPolicy"),
812	>	new SecurityPermission("setPolicy"),
813	>	new RuntimePermission("setSecurityManager"),
814	>	// Permissions needed by the junit test harness
815	>	new RuntimePermission("accessDeclaredMembers"),
816	>	new PropertyPermission("*", "read"),
817	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
818	>	}
819	>
820	>	/**
821	>	* Sleeps until the given time has elapsed.
822	>	* Throws AssertionFailedError if interrupted.
823	>	*/
824	>	void sleep(long millis) {
825	>	try {
826	>	delay(millis);
827	>	} catch (InterruptedException ie) {
828	>	AssertionFailedError afe =
829	>	new AssertionFailedError("Unexpected InterruptedException");
830	>	afe.initCause(ie);
831	>	throw afe;
832	>	}
833	>	}
834	>
835	>	/**
836	>	* Spin-waits up to the specified number of milliseconds for the given
837	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
838	>	*/
839	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
840	>	long startTime = System.nanoTime();
841	>	for (;;) {
842	>	Thread.State s = thread.getState();
843	>	if (s == Thread.State.BLOCKED ||
844	>	s == Thread.State.WAITING ||
845	>	s == Thread.State.TIMED_WAITING)
846	>	return;
847	>	else if (s == Thread.State.TERMINATED)
848	>	fail("Unexpected thread termination");
849	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
850	>	threadAssertTrue(thread.isAlive());
851	>	return;
852		}
853	<	catch(Exception e) {
854	<	threadUnexpectedException();
853	>	Thread.yield();
854	>	}
855	>	}
856	>
857	>	/**
858	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
859	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
860	>	*/
861	>	void waitForThreadToEnterWaitState(Thread thread) {
862	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
863	>	}
864	>
865	>	/**
866	>	* Returns the number of milliseconds since time given by
867	>	* startNanoTime, which must have been previously returned from a
868	>	* call to {@link System.nanoTime()}.
869	>	*/
870	>	long millisElapsedSince(long startNanoTime) {
871	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
872	>	}
873	>
874	>	/**
875	>	* Returns a new started daemon Thread running the given runnable.
876	>	*/
877	>	Thread newStartedThread(Runnable runnable) {
878	>	Thread t = new Thread(runnable);
879	>	t.setDaemon(true);
880	>	t.start();
881	>	return t;
882	>	}
883	>
884	>	/**
885	>	* Waits for the specified time (in milliseconds) for the thread
886	>	* to terminate (using {@link Thread#join(long)}), else interrupts
887	>	* the thread (in the hope that it may terminate later) and fails.
888	>	*/
889	>	void awaitTermination(Thread t, long timeoutMillis) {
890	>	try {
891	>	t.join(timeoutMillis);
892	>	} catch (InterruptedException ie) {
893	>	threadUnexpectedException(ie);
894	>	} finally {
895	>	if (t.getState() != Thread.State.TERMINATED) {
896	>	t.interrupt();
897	>	fail("Test timed out");
898		}
899		}
900		}
901
902	<	public class ShortInterruptedRunnable implements Runnable {
903	<	public void run() {
902	>	/**
903	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
904	>	* terminate (using {@link Thread#join(long)}), else interrupts
905	>	* the thread (in the hope that it may terminate later) and fails.
906	>	*/
907	>	void awaitTermination(Thread t) {
908	>	awaitTermination(t, LONG_DELAY_MS);
909	>	}
910	>
911	>	// Some convenient Runnable classes
912	>
913	>	public abstract class CheckedRunnable implements Runnable {
914	>	protected abstract void realRun() throws Throwable;
915	>
916	>	public final void run() {
917		try {
918	<	Thread.sleep(SHORT_DELAY_MS);
919	<	threadShouldThrow();
918	>	realRun();
919	>	} catch (Throwable t) {
920	>	threadUnexpectedException(t);
921		}
922	<	catch(InterruptedException success) {
922	>	}
923	>	}
924	>
925	>	public abstract class RunnableShouldThrow implements Runnable {
926	>	protected abstract void realRun() throws Throwable;
927	>
928	>	final Class<?> exceptionClass;
929	>
930	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
931	>	this.exceptionClass = exceptionClass;
932	>	}
933	>
934	>	public final void run() {
935	>	try {
936	>	realRun();
937	>	threadShouldThrow(exceptionClass.getSimpleName());
938	>	} catch (Throwable t) {
939	>	if (! exceptionClass.isInstance(t))
940	>	threadUnexpectedException(t);
941		}
942		}
943		}
944
945	<	public class SmallRunnable implements Runnable {
946	<	public void run() {
945	>	public abstract class ThreadShouldThrow extends Thread {
946	>	protected abstract void realRun() throws Throwable;
947	>
948	>	final Class<?> exceptionClass;
949	>
950	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
951	>	this.exceptionClass = exceptionClass;
952	>	}
953	>
954	>	public final void run() {
955		try {
956	<	Thread.sleep(SMALL_DELAY_MS);
956	>	realRun();
957	>	threadShouldThrow(exceptionClass.getSimpleName());
958	>	} catch (Throwable t) {
959	>	if (! exceptionClass.isInstance(t))
960	>	threadUnexpectedException(t);
961		}
962	<	catch(Exception e) {
963	<	threadUnexpectedException();
962	>	}
963	>	}
964	>
965	>	public abstract class CheckedInterruptedRunnable implements Runnable {
966	>	protected abstract void realRun() throws Throwable;
967	>
968	>	public final void run() {
969	>	try {
970	>	realRun();
971	>	threadShouldThrow("InterruptedException");
972	>	} catch (InterruptedException success) {
973	>	threadAssertFalse(Thread.interrupted());
974	>	} catch (Throwable t) {
975	>	threadUnexpectedException(t);
976		}
977		}
978		}
979
980	<	public class SmallCallable implements Callable {
981	<	public Object call() {
980	>	public abstract class CheckedCallable<T> implements Callable<T> {
981	>	protected abstract T realCall() throws Throwable;
982	>
983	>	public final T call() {
984		try {
985	<	Thread.sleep(SMALL_DELAY_MS);
985	>	return realCall();
986	>	} catch (Throwable t) {
987	>	threadUnexpectedException(t);
988	>	return null;
989		}
990	<	catch(Exception e) {
991	<	threadUnexpectedException();
990	>	}
991	>	}
992	>
993	>	public abstract class CheckedInterruptedCallable<T>
994	>	implements Callable<T> {
995	>	protected abstract T realCall() throws Throwable;
996	>
997	>	public final T call() {
998	>	try {
999	>	T result = realCall();
1000	>	threadShouldThrow("InterruptedException");
1001	>	return result;
1002	>	} catch (InterruptedException success) {
1003	>	threadAssertFalse(Thread.interrupted());
1004	>	} catch (Throwable t) {
1005	>	threadUnexpectedException(t);
1006		}
1007	+	return null;
1008	+	}
1009	+	}
1010	+
1011	+	public static class NoOpRunnable implements Runnable {
1012	+	public void run() {}
1013	+	}
1014	+
1015	+	public static class NoOpCallable implements Callable {
1016	+	public Object call() { return Boolean.TRUE; }
1017	+	}
1018	+
1019	+	public static final String TEST_STRING = "a test string";
1020	+
1021	+	public static class StringTask implements Callable<String> {
1022	+	public String call() { return TEST_STRING; }
1023	+	}
1024	+
1025	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1026	+	return new CheckedCallable<String>() {
1027	+	protected String realCall() {
1028	+	try {
1029	+	latch.await();
1030	+	} catch (InterruptedException quittingTime) {}
1031	+	return TEST_STRING;
1032	+	}};
1033	+	}
1034	+
1035	+	public Runnable awaiter(final CountDownLatch latch) {
1036	+	return new CheckedRunnable() {
1037	+	public void realRun() throws InterruptedException {
1038	+	await(latch);
1039	+	}};
1040	+	}
1041	+
1042	+	public void await(CountDownLatch latch) {
1043	+	try {
1044	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1045	+	} catch (Throwable t) {
1046	+	threadUnexpectedException(t);
1047	+	}
1048	+	}
1049	+
1050	+	public void await(Semaphore semaphore) {
1051	+	try {
1052	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1053	+	} catch (Throwable t) {
1054	+	threadUnexpectedException(t);
1055	+	}
1056	+	}
1057	+
1058	+	//     /**
1059	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1060	+	//      */
1061	+	//     public void await(AtomicBoolean flag) {
1062	+	//         await(flag, LONG_DELAY_MS);
1063	+	//     }
1064	+
1065	+	//     /**
1066	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1067	+	//      */
1068	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1069	+	//         long startTime = System.nanoTime();
1070	+	//         while (!flag.get()) {
1071	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1072	+	//                 throw new AssertionFailedError("timed out");
1073	+	//             Thread.yield();
1074	+	//         }
1075	+	//     }
1076	+
1077	+	public static class NPETask implements Callable<String> {
1078	+	public String call() { throw new NullPointerException(); }
1079	+	}
1080	+
1081	+	public static class CallableOne implements Callable<Integer> {
1082	+	public Integer call() { return one; }
1083	+	}
1084	+
1085	+	public class ShortRunnable extends CheckedRunnable {
1086	+	protected void realRun() throws Throwable {
1087	+	delay(SHORT_DELAY_MS);
1088	+	}
1089	+	}
1090	+
1091	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1092	+	protected void realRun() throws InterruptedException {
1093	+	delay(SHORT_DELAY_MS);
1094	+	}
1095	+	}
1096	+
1097	+	public class SmallRunnable extends CheckedRunnable {
1098	+	protected void realRun() throws Throwable {
1099	+	delay(SMALL_DELAY_MS);
1100	+	}
1101	+	}
1102	+
1103	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1104	+	protected void realRun() {
1105	+	try {
1106	+	delay(SMALL_DELAY_MS);
1107	+	} catch (InterruptedException ok) {}
1108	+	}
1109	+	}
1110	+
1111	+	public class SmallCallable extends CheckedCallable {
1112	+	protected Object realCall() throws InterruptedException {
1113	+	delay(SMALL_DELAY_MS);
1114		return Boolean.TRUE;
1115		}
1116		}
1117
1118	<	public class SmallInterruptedRunnable implements Runnable {
1118	>	public class MediumRunnable extends CheckedRunnable {
1119	>	protected void realRun() throws Throwable {
1120	>	delay(MEDIUM_DELAY_MS);
1121	>	}
1122	>	}
1123	>
1124	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1125	>	protected void realRun() throws InterruptedException {
1126	>	delay(MEDIUM_DELAY_MS);
1127	>	}
1128	>	}
1129	>
1130	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1131	>	return new CheckedRunnable() {
1132	>	protected void realRun() {
1133	>	try {
1134	>	delay(timeoutMillis);
1135	>	} catch (InterruptedException ok) {}
1136	>	}};
1137	>	}
1138	>
1139	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1140	>	protected void realRun() {
1141	>	try {
1142	>	delay(MEDIUM_DELAY_MS);
1143	>	} catch (InterruptedException ok) {}
1144	>	}
1145	>	}
1146	>
1147	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1148	>	protected void realRun() {
1149	>	try {
1150	>	delay(LONG_DELAY_MS);
1151	>	} catch (InterruptedException ok) {}
1152	>	}
1153	>	}
1154	>
1155	>	/**
1156	>	* For use as ThreadFactory in constructors
1157	>	*/
1158	>	public static class SimpleThreadFactory implements ThreadFactory {
1159	>	public Thread newThread(Runnable r) {
1160	>	return new Thread(r);
1161	>	}
1162	>	}
1163	>
1164	>	public interface TrackedRunnable extends Runnable {
1165	>	boolean isDone();
1166	>	}
1167	>
1168	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1169	>	return new TrackedRunnable() {
1170	>	private volatile boolean done = false;
1171	>	public boolean isDone() { return done; }
1172	>	public void run() {
1173	>	try {
1174	>	delay(timeoutMillis);
1175	>	done = true;
1176	>	} catch (InterruptedException ok) {}
1177	>	}
1178	>	};
1179	>	}
1180	>
1181	>	public static class TrackedShortRunnable implements Runnable {
1182	>	public volatile boolean done = false;
1183		public void run() {
1184		try {
1185	<	Thread.sleep(SMALL_DELAY_MS);
1186	<	threadShouldThrow();
1187	<	}
256	<	catch(InterruptedException success) {
257	<	}
1185	>	delay(SHORT_DELAY_MS);
1186	>	done = true;
1187	>	} catch (InterruptedException ok) {}
1188		}
1189		}
1190
1191	+	public static class TrackedSmallRunnable implements Runnable {
1192	+	public volatile boolean done = false;
1193	+	public void run() {
1194	+	try {
1195	+	delay(SMALL_DELAY_MS);
1196	+	done = true;
1197	+	} catch (InterruptedException ok) {}
1198	+	}
1199	+	}
1200
1201	<	public class MediumRunnable implements Runnable {
1201	>	public static class TrackedMediumRunnable implements Runnable {
1202	>	public volatile boolean done = false;
1203		public void run() {
1204		try {
1205	<	Thread.sleep(MEDIUM_DELAY_MS);
1206	<	}
1207	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
1205	>	delay(MEDIUM_DELAY_MS);
1206	>	done = true;
1207	>	} catch (InterruptedException ok) {}
1208		}
1209		}
1210
1211	<	public class MediumInterruptedRunnable implements Runnable {
1211	>	public static class TrackedLongRunnable implements Runnable {
1212	>	public volatile boolean done = false;
1213		public void run() {
1214		try {
1215	<	Thread.sleep(MEDIUM_DELAY_MS);
1216	<	threadShouldThrow();
1215	>	delay(LONG_DELAY_MS);
1216	>	done = true;
1217	>	} catch (InterruptedException ok) {}
1218	>	}
1219	>	}
1220	>
1221	>	public static class TrackedNoOpRunnable implements Runnable {
1222	>	public volatile boolean done = false;
1223	>	public void run() {
1224	>	done = true;
1225	>	}
1226	>	}
1227	>
1228	>	public static class TrackedCallable implements Callable {
1229	>	public volatile boolean done = false;
1230	>	public Object call() {
1231	>	try {
1232	>	delay(SMALL_DELAY_MS);
1233	>	done = true;
1234	>	} catch (InterruptedException ok) {}
1235	>	return Boolean.TRUE;
1236	>	}
1237	>	}
1238	>
1239	>	/**
1240	>	* Analog of CheckedRunnable for RecursiveAction
1241	>	*/
1242	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1243	>	protected abstract void realCompute() throws Throwable;
1244	>
1245	>	@Override protected final void compute() {
1246	>	try {
1247	>	realCompute();
1248	>	} catch (Throwable t) {
1249	>	threadUnexpectedException(t);
1250		}
1251	<	catch(InterruptedException success) {
1251	>	}
1252	>	}
1253	>
1254	>	/**
1255	>	* Analog of CheckedCallable for RecursiveTask
1256	>	*/
1257	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1258	>	protected abstract T realCompute() throws Throwable;
1259	>
1260	>	@Override protected final T compute() {
1261	>	try {
1262	>	return realCompute();
1263	>	} catch (Throwable t) {
1264	>	threadUnexpectedException(t);
1265	>	return null;
1266		}
1267		}
1268		}
1269
1270	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1271	<	public void run() {
1270	>	/**
1271	>	* For use as RejectedExecutionHandler in constructors
1272	>	*/
1273	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1274	>	public void rejectedExecution(Runnable r,
1275	>	ThreadPoolExecutor executor) {}
1276	>	}
1277	>
1278	>	/**
1279	>	* A CyclicBarrier that uses timed await and fails with
1280	>	* AssertionFailedErrors instead of throwing checked exceptions.
1281	>	*/
1282	>	public class CheckedBarrier extends CyclicBarrier {
1283	>	public CheckedBarrier(int parties) { super(parties); }
1284	>
1285	>	public int await() {
1286		try {
1287	<	Thread.sleep(MEDIUM_DELAY_MS);
1287	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1288	>	} catch (TimeoutException e) {
1289	>	throw new AssertionFailedError("timed out");
1290	>	} catch (Exception e) {
1291	>	AssertionFailedError afe =
1292	>	new AssertionFailedError("Unexpected exception: " + e);
1293	>	afe.initCause(e);
1294	>	throw afe;
1295		}
1296	<	catch(InterruptedException success) {
1296	>	}
1297	>	}
1298	>
1299	>	void checkEmpty(BlockingQueue q) {
1300	>	try {
1301	>	assertTrue(q.isEmpty());
1302	>	assertEquals(0, q.size());
1303	>	assertNull(q.peek());
1304	>	assertNull(q.poll());
1305	>	assertNull(q.poll(0, MILLISECONDS));
1306	>	assertEquals(q.toString(), "[]");
1307	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1308	>	assertFalse(q.iterator().hasNext());
1309	>	try {
1310	>	q.element();
1311	>	shouldThrow();
1312	>	} catch (NoSuchElementException success) {}
1313	>	try {
1314	>	q.iterator().next();
1315	>	shouldThrow();
1316	>	} catch (NoSuchElementException success) {}
1317	>	try {
1318	>	q.remove();
1319	>	shouldThrow();
1320	>	} catch (NoSuchElementException success) {}
1321	>	} catch (InterruptedException ie) {
1322	>	threadUnexpectedException(ie);
1323	>	}
1324	>	}
1325	>
1326	>	void assertSerialEquals(Object x, Object y) {
1327	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1328	>	}
1329	>
1330	>	void assertNotSerialEquals(Object x, Object y) {
1331	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1332	>	}
1333	>
1334	>	byte[] serialBytes(Object o) {
1335	>	try {
1336	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1337	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1338	>	oos.writeObject(o);
1339	>	oos.flush();
1340	>	oos.close();
1341	>	return bos.toByteArray();
1342	>	} catch (Throwable t) {
1343	>	threadUnexpectedException(t);
1344	>	return new byte[0];
1345	>	}
1346	>	}
1347	>
1348	>	@SuppressWarnings("unchecked")
1349	>	<T> T serialClone(T o) {
1350	>	try {
1351	>	ObjectInputStream ois = new ObjectInputStream
1352	>	(new ByteArrayInputStream(serialBytes(o)));
1353	>	T clone = (T) ois.readObject();
1354	>	assertSame(o.getClass(), clone.getClass());
1355	>	return clone;
1356	>	} catch (Throwable t) {
1357	>	threadUnexpectedException(t);
1358	>	return null;
1359	>	}
1360	>	}
1361	>
1362	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1363	>	Runnable... throwingActions) {
1364	>	for (Runnable throwingAction : throwingActions) {
1365	>	boolean threw = false;
1366	>	try { throwingAction.run(); }
1367	>	catch (Throwable t) {
1368	>	threw = true;
1369	>	if (!expectedExceptionClass.isInstance(t)) {
1370	>	AssertionFailedError afe =
1371	>	new AssertionFailedError
1372	>	("Expected " + expectedExceptionClass.getName() +
1373	>	", got " + t.getClass().getName());
1374	>	afe.initCause(t);
1375	>	threadUnexpectedException(afe);
1376	>	}
1377		}
1378	+	if (!threw)
1379	+	shouldThrow(expectedExceptionClass.getName());
1380		}
1381		}
293	–
1382		}

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