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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.28 by dl, Fri May 20 16:30:17 2005 UTC vs.
Revision 1.125 by jsr166, Thu Jan 15 18:58:07 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.io.ByteArrayInputStream;
13	>	import java.io.ByteArrayOutputStream;
14	>	import java.io.ObjectInputStream;
15	>	import java.io.ObjectOutputStream;
16	>	import java.lang.management.ManagementFactory;
17	>	import java.lang.management.ThreadInfo;
18	>	import java.lang.reflect.Method;
19	>	import java.security.CodeSource;
20	>	import java.security.Permission;
21	>	import java.security.PermissionCollection;
22	>	import java.security.Permissions;
23	>	import java.security.Policy;
24	>	import java.security.ProtectionDomain;
25	>	import java.security.SecurityPermission;
26	>	import java.util.ArrayList;
27	>	import java.util.Arrays;
28	>	import java.util.Date;
29	>	import java.util.Enumeration;
30	>	import java.util.List;
31	>	import java.util.NoSuchElementException;
32	>	import java.util.PropertyPermission;
33	>	import java.util.concurrent.BlockingQueue;
34	>	import java.util.concurrent.Callable;
35	>	import java.util.concurrent.CountDownLatch;
36	>	import java.util.concurrent.CyclicBarrier;
37	>	import java.util.concurrent.ExecutorService;
38	>	import java.util.concurrent.Future;
39	>	import java.util.concurrent.RecursiveAction;
40	>	import java.util.concurrent.RecursiveTask;
41	>	import java.util.concurrent.RejectedExecutionHandler;
42	>	import java.util.concurrent.Semaphore;
43	>	import java.util.concurrent.ThreadFactory;
44	>	import java.util.concurrent.ThreadPoolExecutor;
45	>	import java.util.concurrent.TimeoutException;
46	>	import java.util.concurrent.atomic.AtomicReference;
47	>	import java.util.regex.Pattern;
48	>
49	>	import junit.framework.AssertionFailedError;
50	>	import junit.framework.Test;
51	>	import junit.framework.TestCase;
52	>	import junit.framework.TestSuite;
53
54		/**
55		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 25 | Line 64 | import java.security.*;
64		* <li> All assertions in code running in generated threads must use
65		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
66		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
67	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
67	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
68		* particularly recommended) for other code to use these forms too.
69		* Only the most typically used JUnit assertion methods are defined
70		* this way, but enough to live with.</li>
71		*
72		* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
73	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
73	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
74		* them. These methods are used to clear and check for thread
75		* assertion failures.</li>
76		*
77	<	* <li>All delays and timeouts must use one of the constants <tt>
78	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
79	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
77	>	* <li>All delays and timeouts must use one of the constants {@code
78	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
79	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
80		* discriminable from zero time, and always allows enough time for the
81		* small amounts of computation (creating a thread, calling a few
82		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
#	Line 47 | Line 86 | import java.security.*;
86		* in one spot to rerun tests on slower platforms.</li>
87		*
88		* <li> All threads generated must be joined inside each test case
89	<	* method (or <tt>fail</tt> to do so) before returning from the
90	<	* method. The <tt> joinPool</tt> method can be used to do this when
89	>	* method (or {@code fail} to do so) before returning from the
90	>	* method. The {@code joinPool} method can be used to do this when
91		* using Executors.</li>
92		*
93		* </ol>
94		*
95	<	* <p> <b>Other notes</b>
95	>	* <p><b>Other notes</b>
96		* <ul>
97		*
98		* <li> Usually, there is one testcase method per JSR166 method
#	Line 80 | Line 119 | import java.security.*;
119		* any particular package to simplify things for people integrating
120		* them in TCK test suites.</li>
121		*
122	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
122	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
123		* runs all JSR166 unit tests.</li>
124		*
125		* </ul>
126		*/
127		public class JSR166TestCase extends TestCase {
128	+	private static final boolean useSecurityManager =
129	+	Boolean.getBoolean("jsr166.useSecurityManager");
130	+
131	+	protected static final boolean expensiveTests =
132	+	Boolean.getBoolean("jsr166.expensiveTests");
133	+
134	+	/**
135	+	* If true, also run tests that are not part of the official tck
136	+	* because they test unspecified implementation details.
137	+	*/
138	+	protected static final boolean testImplementationDetails =
139	+	Boolean.getBoolean("jsr166.testImplementationDetails");
140	+
141	+	/**
142	+	* If true, report on stdout all "slow" tests, that is, ones that
143	+	* take more than profileThreshold milliseconds to execute.
144	+	*/
145	+	private static final boolean profileTests =
146	+	Boolean.getBoolean("jsr166.profileTests");
147	+
148	+	/**
149	+	* The number of milliseconds that tests are permitted for
150	+	* execution without being reported, when profileTests is set.
151	+	*/
152	+	private static final long profileThreshold =
153	+	Long.getLong("jsr166.profileThreshold", 100);
154	+
155	+	/**
156	+	* The number of repetitions per test (for tickling rare bugs).
157	+	*/
158	+	private static final int runsPerTest =
159	+	Integer.getInteger("jsr166.runsPerTest", 1);
160	+
161	+	/**
162	+	* A filter for tests to run, matching strings of the form
163	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
164	+	* Usefully combined with jsr166.runsPerTest.
165	+	*/
166	+	private static final Pattern methodFilter = methodFilter();
167	+
168	+	private static Pattern methodFilter() {
169	+	String regex = System.getProperty("jsr166.methodFilter");
170	+	return (regex == null) ? null : Pattern.compile(regex);
171	+	}
172	+
173	+	protected void runTest() throws Throwable {
174	+	if (methodFilter == null
175	+	|| methodFilter.matcher(toString()).find()) {
176	+	for (int i = 0; i < runsPerTest; i++) {
177	+	if (profileTests)
178	+	runTestProfiled();
179	+	else
180	+	super.runTest();
181	+	}
182	+	}
183	+	}
184	+
185	+	protected void runTestProfiled() throws Throwable {
186	+	// Warmup run, notably to trigger all needed classloading.
187	+	super.runTest();
188	+	long t0 = System.nanoTime();
189	+	try {
190	+	super.runTest();
191	+	} finally {
192	+	long elapsedMillis = millisElapsedSince(t0);
193	+	if (elapsedMillis >= profileThreshold)
194	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
195	+	}
196	+	}
197	+
198		/**
199	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
199	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
200	>	* Optional command line arg provides the number of iterations to
201	>	* repeat running the tests.
202		*/
203	<	public static void main (String[] args) {
204	<	int iters = 1;
205	<	if (args.length > 0)
206	<	iters = Integer.parseInt(args[0]);
203	>	public static void main(String[] args) {
204	>	if (useSecurityManager) {
205	>	System.err.println("Setting a permissive security manager");
206	>	Policy.setPolicy(permissivePolicy());
207	>	System.setSecurityManager(new SecurityManager());
208	>	}
209	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
210	>
211		Test s = suite();
212		for (int i = 0; i < iters; ++i) {
213	<	junit.textui.TestRunner.run (s);
213	>	junit.textui.TestRunner.run(s);
214		System.gc();
215		System.runFinalization();
216		}
217		System.exit(0);
218		}
219
220	<	/**
221	<	* Collects all JSR166 unit tests as one suite
222	<	*/
223	<	public static Test suite ( ) {
224	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
220	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
221	>	TestSuite suite = new TestSuite();
222	>	for (Object suiteOrClass : suiteOrClasses) {
223	>	if (suiteOrClass instanceof TestSuite)
224	>	suite.addTest((TestSuite) suiteOrClass);
225	>	else if (suiteOrClass instanceof Class)
226	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
227	>	else
228	>	throw new ClassCastException("not a test suite or class");
229	>	}
230	>	return suite;
231	>	}
232
233	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
234	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
235	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
236	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
237	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
238	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
239	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
240	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
241	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
242	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
243	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
244	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
245	<	suite.addTest(new TestSuite(AtomicLongTest.class));
246	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
247	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
248	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
249	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
250	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
251	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
252	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
253	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
254	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
255	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
256	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
257	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
258	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
259	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
260	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
261	<	suite.addTest(new TestSuite(DelayQueueTest.class));
262	<	suite.addTest(new TestSuite(ExchangerTest.class));
263	<	suite.addTest(new TestSuite(ExecutorsTest.class));
264	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
265	<	suite.addTest(new TestSuite(FutureTaskTest.class));
266	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
267	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
268	<	suite.addTest(new TestSuite(LinkedListTest.class));
269	<	suite.addTest(new TestSuite(LockSupportTest.class));
270	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
271	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
272	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
273	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
274	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
275	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
276	<	suite.addTest(new TestSuite(SemaphoreTest.class));
277	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
278	<	suite.addTest(new TestSuite(SystemTest.class));
279	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
280	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
281	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
282	<	suite.addTest(new TestSuite(ThreadTest.class));
283	<	suite.addTest(new TestSuite(TimeUnitTest.class));
284	<	suite.addTest(new TestSuite(TreeMapTest.class));
285	<	suite.addTest(new TestSuite(TreeSetTest.class));
286	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
287	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
233	>	public static void addNamedTestClasses(TestSuite suite,
234	>	String... testClassNames) {
235	>	for (String testClassName : testClassNames) {
236	>	try {
237	>	Class<?> testClass = Class.forName(testClassName);
238	>	Method m = testClass.getDeclaredMethod("suite",
239	>	new Class<?>[0]);
240	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
241	>	} catch (Exception e) {
242	>	throw new Error("Missing test class", e);
243	>	}
244	>	}
245	>	}
246	>
247	>	public static final double JAVA_CLASS_VERSION;
248	>	public static final String JAVA_SPECIFICATION_VERSION;
249	>	static {
250	>	try {
251	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
252	>	new java.security.PrivilegedAction<Double>() {
253	>	public Double run() {
254	>	return Double.valueOf(System.getProperty("java.class.version"));}});
255	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
256	>	new java.security.PrivilegedAction<String>() {
257	>	public String run() {
258	>	return System.getProperty("java.specification.version");}});
259	>	} catch (Throwable t) {
260	>	throw new Error(t);
261	>	}
262	>	}
263	>
264	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
265	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
266	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
267	>	public static boolean atLeastJava9() {
268	>	// As of 2014-05, java9 still uses 52.0 class file version
269	>	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
270	>	}
271	>
272	>	/**
273	>	* Collects all JSR166 unit tests as one suite.
274	>	*/
275	>	public static Test suite() {
276	>	// Java7+ test classes
277	>	TestSuite suite = newTestSuite(
278	>	ForkJoinPoolTest.suite(),
279	>	ForkJoinTaskTest.suite(),
280	>	RecursiveActionTest.suite(),
281	>	RecursiveTaskTest.suite(),
282	>	LinkedTransferQueueTest.suite(),
283	>	PhaserTest.suite(),
284	>	ThreadLocalRandomTest.suite(),
285	>	AbstractExecutorServiceTest.suite(),
286	>	AbstractQueueTest.suite(),
287	>	AbstractQueuedSynchronizerTest.suite(),
288	>	AbstractQueuedLongSynchronizerTest.suite(),
289	>	ArrayBlockingQueueTest.suite(),
290	>	ArrayDequeTest.suite(),
291	>	AtomicBooleanTest.suite(),
292	>	AtomicIntegerArrayTest.suite(),
293	>	AtomicIntegerFieldUpdaterTest.suite(),
294	>	AtomicIntegerTest.suite(),
295	>	AtomicLongArrayTest.suite(),
296	>	AtomicLongFieldUpdaterTest.suite(),
297	>	AtomicLongTest.suite(),
298	>	AtomicMarkableReferenceTest.suite(),
299	>	AtomicReferenceArrayTest.suite(),
300	>	AtomicReferenceFieldUpdaterTest.suite(),
301	>	AtomicReferenceTest.suite(),
302	>	AtomicStampedReferenceTest.suite(),
303	>	ConcurrentHashMapTest.suite(),
304	>	ConcurrentLinkedDequeTest.suite(),
305	>	ConcurrentLinkedQueueTest.suite(),
306	>	ConcurrentSkipListMapTest.suite(),
307	>	ConcurrentSkipListSubMapTest.suite(),
308	>	ConcurrentSkipListSetTest.suite(),
309	>	ConcurrentSkipListSubSetTest.suite(),
310	>	CopyOnWriteArrayListTest.suite(),
311	>	CopyOnWriteArraySetTest.suite(),
312	>	CountDownLatchTest.suite(),
313	>	CyclicBarrierTest.suite(),
314	>	DelayQueueTest.suite(),
315	>	EntryTest.suite(),
316	>	ExchangerTest.suite(),
317	>	ExecutorsTest.suite(),
318	>	ExecutorCompletionServiceTest.suite(),
319	>	FutureTaskTest.suite(),
320	>	LinkedBlockingDequeTest.suite(),
321	>	LinkedBlockingQueueTest.suite(),
322	>	LinkedListTest.suite(),
323	>	LockSupportTest.suite(),
324	>	PriorityBlockingQueueTest.suite(),
325	>	PriorityQueueTest.suite(),
326	>	ReentrantLockTest.suite(),
327	>	ReentrantReadWriteLockTest.suite(),
328	>	ScheduledExecutorTest.suite(),
329	>	ScheduledExecutorSubclassTest.suite(),
330	>	SemaphoreTest.suite(),
331	>	SynchronousQueueTest.suite(),
332	>	SystemTest.suite(),
333	>	ThreadLocalTest.suite(),
334	>	ThreadPoolExecutorTest.suite(),
335	>	ThreadPoolExecutorSubclassTest.suite(),
336	>	ThreadTest.suite(),
337	>	TimeUnitTest.suite(),
338	>	TreeMapTest.suite(),
339	>	TreeSetTest.suite(),
340	>	TreeSubMapTest.suite(),
341	>	TreeSubSetTest.suite());
342	>
343	>	// Java8+ test classes
344	>	if (atLeastJava8()) {
345	>	String[] java8TestClassNames = {
346	>	"Atomic8Test",
347	>	"CompletableFutureTest",
348	>	"ConcurrentHashMap8Test",
349	>	"CountedCompleterTest",
350	>	"DoubleAccumulatorTest",
351	>	"DoubleAdderTest",
352	>	"ForkJoinPool8Test",
353	>	"ForkJoinTask8Test",
354	>	"LongAccumulatorTest",
355	>	"LongAdderTest",
356	>	"SplittableRandomTest",
357	>	"StampedLockTest",
358	>	"ThreadLocalRandom8Test",
359	>	};
360	>	addNamedTestClasses(suite, java8TestClassNames);
361	>	}
362	>
363	>	// Java9+ test classes
364	>	if (atLeastJava9()) {
365	>	String[] java9TestClassNames = {
366	>	"ThreadPoolExecutor9Test",
367	>	};
368	>	addNamedTestClasses(suite, java9TestClassNames);
369	>	}
370
371		return suite;
372		}
373
374	+	// Delays for timing-dependent tests, in milliseconds.
375
376		public static long SHORT_DELAY_MS;
377		public static long SMALL_DELAY_MS;
378		public static long MEDIUM_DELAY_MS;
379		public static long LONG_DELAY_MS;
380
176	–
381		/**
382		* Returns the shortest timed delay. This could
383		* be reimplemented to use for example a Property.
#	Line 182 | Line 386 | public class JSR166TestCase extends Test
386		return 50;
387		}
388
185	–
389		/**
390		* Sets delays as multiples of SHORT_DELAY.
391		*/
392	<	protected  void setDelays() {
392	>	protected void setDelays() {
393		SHORT_DELAY_MS = getShortDelay();
394	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
394	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
395		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
396	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
396	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
397	>	}
398	>
399	>	/**
400	>	* Returns a timeout in milliseconds to be used in tests that
401	>	* verify that operations block or time out.
402	>	*/
403	>	long timeoutMillis() {
404	>	return SHORT_DELAY_MS / 4;
405	>	}
406	>
407	>	/**
408	>	* Returns a new Date instance representing a time delayMillis
409	>	* milliseconds in the future.
410	>	*/
411	>	Date delayedDate(long delayMillis) {
412	>	return new Date(System.currentTimeMillis() + delayMillis);
413		}
414
415		/**
416	<	* Flag set true if any threadAssert methods fail
416	>	* The first exception encountered if any threadAssertXXX method fails.
417		*/
418	<	volatile boolean threadFailed;
418	>	private final AtomicReference<Throwable> threadFailure
419	>	= new AtomicReference<Throwable>(null);
420
421		/**
422	<	* Initializes test to indicate that no thread assertions have failed
422	>	* Records an exception so that it can be rethrown later in the test
423	>	* harness thread, triggering a test case failure.  Only the first
424	>	* failure is recorded; subsequent calls to this method from within
425	>	* the same test have no effect.
426		*/
427	+	public void threadRecordFailure(Throwable t) {
428	+	threadFailure.compareAndSet(null, t);
429	+	}
430	+
431		public void setUp() {
432		setDelays();
206	–	threadFailed = false;
433		}
434
435		/**
436	<	* Triggers test case failure if any thread assertions have failed
437	<	*/
438	<	public void tearDown() {
439	<	assertFalse(threadFailed);
436	>	* Extra checks that get done for all test cases.
437	>	*
438	>	* Triggers test case failure if any thread assertions have failed,
439	>	* by rethrowing, in the test harness thread, any exception recorded
440	>	* earlier by threadRecordFailure.
441	>	*
442	>	* Triggers test case failure if interrupt status is set in the main thread.
443	>	*/
444	>	public void tearDown() throws Exception {
445	>	Throwable t = threadFailure.getAndSet(null);
446	>	if (t != null) {
447	>	if (t instanceof Error)
448	>	throw (Error) t;
449	>	else if (t instanceof RuntimeException)
450	>	throw (RuntimeException) t;
451	>	else if (t instanceof Exception)
452	>	throw (Exception) t;
453	>	else {
454	>	AssertionFailedError afe =
455	>	new AssertionFailedError(t.toString());
456	>	afe.initCause(t);
457	>	throw afe;
458	>	}
459	>	}
460	>
461	>	if (Thread.interrupted())
462	>	throw new AssertionFailedError("interrupt status set in main thread");
463	>
464	>	checkForkJoinPoolThreadLeaks();
465		}
466
467		/**
468	<	* Fail, also setting status to indicate current testcase should fail
468	>	* Finds missing try { ... } finally { joinPool(e); }
469	>	*/
470	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
471	>	Thread[] survivors = new Thread[5];
472	>	int count = Thread.enumerate(survivors);
473	>	for (int i = 0; i < count; i++) {
474	>	Thread thread = survivors[i];
475	>	String name = thread.getName();
476	>	if (name.startsWith("ForkJoinPool-")) {
477	>	// give thread some time to terminate
478	>	thread.join(LONG_DELAY_MS);
479	>	if (!thread.isAlive()) continue;
480	>	thread.stop();
481	>	throw new AssertionFailedError
482	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
483	>	toString(), name));
484	>	}
485	>	}
486	>	}
487	>
488	>	/**
489	>	* Just like fail(reason), but additionally recording (using
490	>	* threadRecordFailure) any AssertionFailedError thrown, so that
491	>	* the current testcase will fail.
492		*/
493		public void threadFail(String reason) {
494	<	threadFailed = true;
495	<	fail(reason);
494	>	try {
495	>	fail(reason);
496	>	} catch (AssertionFailedError t) {
497	>	threadRecordFailure(t);
498	>	fail(reason);
499	>	}
500		}
501
502		/**
503	<	* If expression not true, set status to indicate current testcase
504	<	* should fail
503	>	* Just like assertTrue(b), but additionally recording (using
504	>	* threadRecordFailure) any AssertionFailedError thrown, so that
505	>	* the current testcase will fail.
506		*/
507		public void threadAssertTrue(boolean b) {
508	<	if (!b) {
230	<	threadFailed = true;
508	>	try {
509		assertTrue(b);
510	+	} catch (AssertionFailedError t) {
511	+	threadRecordFailure(t);
512	+	throw t;
513		}
514		}
515
516		/**
517	<	* If expression not false, set status to indicate current testcase
518	<	* should fail
517	>	* Just like assertFalse(b), but additionally recording (using
518	>	* threadRecordFailure) any AssertionFailedError thrown, so that
519	>	* the current testcase will fail.
520		*/
521		public void threadAssertFalse(boolean b) {
522	<	if (b) {
241	<	threadFailed = true;
522	>	try {
523		assertFalse(b);
524	+	} catch (AssertionFailedError t) {
525	+	threadRecordFailure(t);
526	+	throw t;
527		}
528		}
529
530		/**
531	<	* If argument not null, set status to indicate current testcase
532	<	* should fail
531	>	* Just like assertNull(x), but additionally recording (using
532	>	* threadRecordFailure) any AssertionFailedError thrown, so that
533	>	* the current testcase will fail.
534		*/
535		public void threadAssertNull(Object x) {
536	<	if (x != null) {
252	<	threadFailed = true;
536	>	try {
537		assertNull(x);
538	+	} catch (AssertionFailedError t) {
539	+	threadRecordFailure(t);
540	+	throw t;
541		}
542		}
543
544		/**
545	<	* If arguments not equal, set status to indicate current testcase
546	<	* should fail
545	>	* Just like assertEquals(x, y), but additionally recording (using
546	>	* threadRecordFailure) any AssertionFailedError thrown, so that
547	>	* the current testcase will fail.
548		*/
549		public void threadAssertEquals(long x, long y) {
550	<	if (x != y) {
263	<	threadFailed = true;
550	>	try {
551		assertEquals(x, y);
552	+	} catch (AssertionFailedError t) {
553	+	threadRecordFailure(t);
554	+	throw t;
555		}
556		}
557
558		/**
559	<	* If arguments not equal, set status to indicate current testcase
560	<	* should fail
559	>	* Just like assertEquals(x, y), but additionally recording (using
560	>	* threadRecordFailure) any AssertionFailedError thrown, so that
561	>	* the current testcase will fail.
562		*/
563		public void threadAssertEquals(Object x, Object y) {
564	<	if (x != y && (x == null || !x.equals(y))) {
274	<	threadFailed = true;
564	>	try {
565		assertEquals(x, y);
566	+	} catch (AssertionFailedError t) {
567	+	threadRecordFailure(t);
568	+	throw t;
569	+	} catch (Throwable t) {
570	+	threadUnexpectedException(t);
571		}
572		}
573
574		/**
575	<	* threadFail with message "should throw exception"
575	>	* Just like assertSame(x, y), but additionally recording (using
576	>	* threadRecordFailure) any AssertionFailedError thrown, so that
577	>	* the current testcase will fail.
578	>	*/
579	>	public void threadAssertSame(Object x, Object y) {
580	>	try {
581	>	assertSame(x, y);
582	>	} catch (AssertionFailedError t) {
583	>	threadRecordFailure(t);
584	>	throw t;
585	>	}
586	>	}
587	>
588	>	/**
589	>	* Calls threadFail with message "should throw exception".
590		*/
591		public void threadShouldThrow() {
592	<	threadFailed = true;
593	<	fail("should throw exception");
592	>	threadFail("should throw exception");
593	>	}
594	>
595	>	/**
596	>	* Calls threadFail with message "should throw" + exceptionName.
597	>	*/
598	>	public void threadShouldThrow(String exceptionName) {
599	>	threadFail("should throw " + exceptionName);
600		}
601
602		/**
603	<	* threadFail with message "Unexpected exception"
603	>	* Records the given exception using {@link #threadRecordFailure},
604	>	* then rethrows the exception, wrapping it in an
605	>	* AssertionFailedError if necessary.
606		*/
607	<	public void threadUnexpectedException() {
608	<	threadFailed = true;
609	<	fail("Unexpected exception");
607	>	public void threadUnexpectedException(Throwable t) {
608	>	threadRecordFailure(t);
609	>	t.printStackTrace();
610	>	if (t instanceof RuntimeException)
611	>	throw (RuntimeException) t;
612	>	else if (t instanceof Error)
613	>	throw (Error) t;
614	>	else {
615	>	AssertionFailedError afe =
616	>	new AssertionFailedError("unexpected exception: " + t);
617	>	afe.initCause(t);
618	>	throw afe;
619	>	}
620		}
621
622	+	/**
623	+	* Delays, via Thread.sleep, for the given millisecond delay, but
624	+	* if the sleep is shorter than specified, may re-sleep or yield
625	+	* until time elapses.
626	+	*/
627	+	static void delay(long millis) throws InterruptedException {
628	+	long startTime = System.nanoTime();
629	+	long ns = millis * 1000 * 1000;
630	+	for (;;) {
631	+	if (millis > 0L)
632	+	Thread.sleep(millis);
633	+	else // too short to sleep
634	+	Thread.yield();
635	+	long d = ns - (System.nanoTime() - startTime);
636	+	if (d > 0L)
637	+	millis = d / (1000 * 1000);
638	+	else
639	+	break;
640	+	}
641	+	}
642
643		/**
644	<	* Wait out termination of a thread pool or fail doing so
644	>	* Waits out termination of a thread pool or fails doing so.
645		*/
646	<	public void joinPool(ExecutorService exec) {
646	>	void joinPool(ExecutorService exec) {
647		try {
648		exec.shutdown();
649	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
650	<	} catch(SecurityException ok) {
649	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
650	>	fail("ExecutorService " + exec +
651	>	" did not terminate in a timely manner");
652	>	} catch (SecurityException ok) {
653		// Allowed in case test doesn't have privs
654	<	} catch(InterruptedException ie) {
655	<	fail("Unexpected exception");
654	>	} catch (InterruptedException ie) {
655	>	fail("Unexpected InterruptedException");
656	>	}
657	>	}
658	>
659	>	/**
660	>	* A debugging tool to print all stack traces, as jstack does.
661	>	*/
662	>	static void printAllStackTraces() {
663	>	for (ThreadInfo info :
664	>	ManagementFactory.getThreadMXBean()
665	>	.dumpAllThreads(true, true))
666	>	System.err.print(info);
667	>	}
668	>
669	>	/**
670	>	* Checks that thread does not terminate within the default
671	>	* millisecond delay of {@code timeoutMillis()}.
672	>	*/
673	>	void assertThreadStaysAlive(Thread thread) {
674	>	assertThreadStaysAlive(thread, timeoutMillis());
675	>	}
676	>
677	>	/**
678	>	* Checks that thread does not terminate within the given millisecond delay.
679	>	*/
680	>	void assertThreadStaysAlive(Thread thread, long millis) {
681	>	try {
682	>	// No need to optimize the failing case via Thread.join.
683	>	delay(millis);
684	>	assertTrue(thread.isAlive());
685	>	} catch (InterruptedException ie) {
686	>	fail("Unexpected InterruptedException");
687		}
688		}
689
690	+	/**
691	+	* Checks that the threads do not terminate within the default
692	+	* millisecond delay of {@code timeoutMillis()}.
693	+	*/
694	+	void assertThreadsStayAlive(Thread... threads) {
695	+	assertThreadsStayAlive(timeoutMillis(), threads);
696	+	}
697	+
698	+	/**
699	+	* Checks that the threads do not terminate within the given millisecond delay.
700	+	*/
701	+	void assertThreadsStayAlive(long millis, Thread... threads) {
702	+	try {
703	+	// No need to optimize the failing case via Thread.join.
704	+	delay(millis);
705	+	for (Thread thread : threads)
706	+	assertTrue(thread.isAlive());
707	+	} catch (InterruptedException ie) {
708	+	fail("Unexpected InterruptedException");
709	+	}
710	+	}
711	+
712	+	/**
713	+	* Checks that future.get times out, with the default timeout of
714	+	* {@code timeoutMillis()}.
715	+	*/
716	+	void assertFutureTimesOut(Future future) {
717	+	assertFutureTimesOut(future, timeoutMillis());
718	+	}
719	+
720	+	/**
721	+	* Checks that future.get times out, with the given millisecond timeout.
722	+	*/
723	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
724	+	long startTime = System.nanoTime();
725	+	try {
726	+	future.get(timeoutMillis, MILLISECONDS);
727	+	shouldThrow();
728	+	} catch (TimeoutException success) {
729	+	} catch (Exception e) {
730	+	threadUnexpectedException(e);
731	+	} finally { future.cancel(true); }
732	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
733	+	}
734
735		/**
736	<	* fail with message "should throw exception"
736	>	* Fails with message "should throw exception".
737		*/
738		public void shouldThrow() {
739		fail("Should throw exception");
740		}
741
742		/**
743	<	* fail with message "Unexpected exception"
743	>	* Fails with message "should throw " + exceptionName.
744		*/
745	<	public void unexpectedException() {
746	<	fail("Unexpected exception");
745	>	public void shouldThrow(String exceptionName) {
746	>	fail("Should throw " + exceptionName);
747		}
748
325	–
749		/**
750		* The number of elements to place in collections, arrays, etc.
751		*/
752	<	static final int SIZE = 20;
752	>	public static final int SIZE = 20;
753
754		// Some convenient Integer constants
755
756	<	static final Integer zero = new Integer(0);
757	<	static final Integer one = new Integer(1);
758	<	static final Integer two = new Integer(2);
759	<	static final Integer three  = new Integer(3);
760	<	static final Integer four  = new Integer(4);
761	<	static final Integer five  = new Integer(5);
762	<	static final Integer six = new Integer(6);
763	<	static final Integer seven = new Integer(7);
764	<	static final Integer eight = new Integer(8);
765	<	static final Integer nine = new Integer(9);
766	<	static final Integer m1  = new Integer(-1);
767	<	static final Integer m2  = new Integer(-2);
768	<	static final Integer m3  = new Integer(-3);
769	<	static final Integer m4 = new Integer(-4);
770	<	static final Integer m5 = new Integer(-5);
771	<	static final Integer m10 = new Integer(-10);
756	>	public static final Integer zero  = new Integer(0);
757	>	public static final Integer one   = new Integer(1);
758	>	public static final Integer two   = new Integer(2);
759	>	public static final Integer three = new Integer(3);
760	>	public static final Integer four  = new Integer(4);
761	>	public static final Integer five  = new Integer(5);
762	>	public static final Integer six   = new Integer(6);
763	>	public static final Integer seven = new Integer(7);
764	>	public static final Integer eight = new Integer(8);
765	>	public static final Integer nine  = new Integer(9);
766	>	public static final Integer m1  = new Integer(-1);
767	>	public static final Integer m2  = new Integer(-2);
768	>	public static final Integer m3  = new Integer(-3);
769	>	public static final Integer m4  = new Integer(-4);
770	>	public static final Integer m5  = new Integer(-5);
771	>	public static final Integer m6  = new Integer(-6);
772	>	public static final Integer m10 = new Integer(-10);
773	>
774	>	/**
775	>	* Runs Runnable r with a security policy that permits precisely
776	>	* the specified permissions.  If there is no current security
777	>	* manager, the runnable is run twice, both with and without a
778	>	* security manager.  We require that any security manager permit
779	>	* getPolicy/setPolicy.
780	>	*/
781	>	public void runWithPermissions(Runnable r, Permission... permissions) {
782	>	SecurityManager sm = System.getSecurityManager();
783	>	if (sm == null) {
784	>	r.run();
785	>	}
786	>	runWithSecurityManagerWithPermissions(r, permissions);
787	>	}
788
789	+	/**
790	+	* Runs Runnable r with a security policy that permits precisely
791	+	* the specified permissions.  If there is no current security
792	+	* manager, a temporary one is set for the duration of the
793	+	* Runnable.  We require that any security manager permit
794	+	* getPolicy/setPolicy.
795	+	*/
796	+	public void runWithSecurityManagerWithPermissions(Runnable r,
797	+	Permission... permissions) {
798	+	SecurityManager sm = System.getSecurityManager();
799	+	if (sm == null) {
800	+	Policy savedPolicy = Policy.getPolicy();
801	+	try {
802	+	Policy.setPolicy(permissivePolicy());
803	+	System.setSecurityManager(new SecurityManager());
804	+	runWithSecurityManagerWithPermissions(r, permissions);
805	+	} finally {
806	+	System.setSecurityManager(null);
807	+	Policy.setPolicy(savedPolicy);
808	+	}
809	+	} else {
810	+	Policy savedPolicy = Policy.getPolicy();
811	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
812	+	Policy.setPolicy(policy);
813	+
814	+	try {
815	+	r.run();
816	+	} finally {
817	+	policy.addPermission(new SecurityPermission("setPolicy"));
818	+	Policy.setPolicy(savedPolicy);
819	+	}
820	+	}
821	+	}
822	+
823	+	/**
824	+	* Runs a runnable without any permissions.
825	+	*/
826	+	public void runWithoutPermissions(Runnable r) {
827	+	runWithPermissions(r);
828	+	}
829
830		/**
831		* A security policy where new permissions can be dynamically added
832		* or all cleared.
833		*/
834	<	static class AdjustablePolicy extends java.security.Policy {
834	>	public static class AdjustablePolicy extends java.security.Policy {
835		Permissions perms = new Permissions();
836	<	AdjustablePolicy() { }
836	>	AdjustablePolicy(Permission... permissions) {
837	>	for (Permission permission : permissions)
838	>	perms.add(permission);
839	>	}
840		void addPermission(Permission perm) { perms.add(perm); }
841		void clearPermissions() { perms = new Permissions(); }
842	<	public PermissionCollection getPermissions(CodeSource cs) {
843	<	return perms;
844	<	}
845	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
846	<	return perms;
847	<	}
848	<	public boolean implies(ProtectionDomain pd, Permission p) {
849	<	return perms.implies(p);
850	<	}
851	<	public void refresh() {}
842	>	public PermissionCollection getPermissions(CodeSource cs) {
843	>	return perms;
844	>	}
845	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
846	>	return perms;
847	>	}
848	>	public boolean implies(ProtectionDomain pd, Permission p) {
849	>	return perms.implies(p);
850	>	}
851	>	public void refresh() {}
852	>	public String toString() {
853	>	List<Permission> ps = new ArrayList<Permission>();
854	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
855	>	ps.add(e.nextElement());
856	>	return "AdjustablePolicy with permissions " + ps;
857	>	}
858		}
859
860	+	/**
861	+	* Returns a policy containing all the permissions we ever need.
862	+	*/
863	+	public static Policy permissivePolicy() {
864	+	return new AdjustablePolicy
865	+	// Permissions j.u.c. needs directly
866	+	(new RuntimePermission("modifyThread"),
867	+	new RuntimePermission("getClassLoader"),
868	+	new RuntimePermission("setContextClassLoader"),
869	+	// Permissions needed to change permissions!
870	+	new SecurityPermission("getPolicy"),
871	+	new SecurityPermission("setPolicy"),
872	+	new RuntimePermission("setSecurityManager"),
873	+	// Permissions needed by the junit test harness
874	+	new RuntimePermission("accessDeclaredMembers"),
875	+	new PropertyPermission("*", "read"),
876	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
877	+	}
878
879	<	// Some convenient Runnable classes
879	>	/**
880	>	* Sleeps until the given time has elapsed.
881	>	* Throws AssertionFailedError if interrupted.
882	>	*/
883	>	void sleep(long millis) {
884	>	try {
885	>	delay(millis);
886	>	} catch (InterruptedException ie) {
887	>	AssertionFailedError afe =
888	>	new AssertionFailedError("Unexpected InterruptedException");
889	>	afe.initCause(ie);
890	>	throw afe;
891	>	}
892	>	}
893
894	<	static class NoOpRunnable implements Runnable {
895	<	public void run() {}
894	>	/**
895	>	* Spin-waits up to the specified number of milliseconds for the given
896	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
897	>	*/
898	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
899	>	long startTime = System.nanoTime();
900	>	for (;;) {
901	>	Thread.State s = thread.getState();
902	>	if (s == Thread.State.BLOCKED ||
903	>	s == Thread.State.WAITING ||
904	>	s == Thread.State.TIMED_WAITING)
905	>	return;
906	>	else if (s == Thread.State.TERMINATED)
907	>	fail("Unexpected thread termination");
908	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
909	>	threadAssertTrue(thread.isAlive());
910	>	return;
911	>	}
912	>	Thread.yield();
913	>	}
914		}
915
916	<	static class NoOpCallable implements Callable {
917	<	public Object call() { return Boolean.TRUE; }
916	>	/**
917	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
918	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
919	>	*/
920	>	void waitForThreadToEnterWaitState(Thread thread) {
921	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
922		}
923
924	<	static final String TEST_STRING = "a test string";
924	>	/**
925	>	* Returns the number of milliseconds since time given by
926	>	* startNanoTime, which must have been previously returned from a
927	>	* call to {@link System#nanoTime()}.
928	>	*/
929	>	static long millisElapsedSince(long startNanoTime) {
930	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
931	>	}
932
933	<	static class StringTask implements Callable<String> {
934	<	public String call() { return TEST_STRING; }
933	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
934	>	//         long startTime = System.nanoTime();
935	>	//         try {
936	>	//             r.run();
937	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
938	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
939	>	//             throw new AssertionFailedError("did not return promptly");
940	>	//     }
941	>
942	>	//     void assertTerminatesPromptly(Runnable r) {
943	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
944	>	//     }
945	>
946	>	/**
947	>	* Checks that timed f.get() returns the expected value, and does not
948	>	* wait for the timeout to elapse before returning.
949	>	*/
950	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
951	>	long startTime = System.nanoTime();
952	>	try {
953	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
954	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
955	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
956	>	throw new AssertionFailedError("timed get did not return promptly");
957		}
958
959	<	static class NPETask implements Callable<String> {
960	<	public String call() { throw new NullPointerException(); }
959	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
960	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
961		}
962
963	<	static class CallableOne implements Callable<Integer> {
964	<	public Integer call() { return one; }
963	>	/**
964	>	* Returns a new started daemon Thread running the given runnable.
965	>	*/
966	>	Thread newStartedThread(Runnable runnable) {
967	>	Thread t = new Thread(runnable);
968	>	t.setDaemon(true);
969	>	t.start();
970	>	return t;
971		}
972
973	<	class ShortRunnable implements Runnable {
974	<	public void run() {
975	<	try {
976	<	Thread.sleep(SHORT_DELAY_MS);
977	<	}
978	<	catch(Exception e) {
979	<	threadUnexpectedException();
973	>	/**
974	>	* Waits for the specified time (in milliseconds) for the thread
975	>	* to terminate (using {@link Thread#join(long)}), else interrupts
976	>	* the thread (in the hope that it may terminate later) and fails.
977	>	*/
978	>	void awaitTermination(Thread t, long timeoutMillis) {
979	>	try {
980	>	t.join(timeoutMillis);
981	>	} catch (InterruptedException ie) {
982	>	threadUnexpectedException(ie);
983	>	} finally {
984	>	if (t.getState() != Thread.State.TERMINATED) {
985	>	t.interrupt();
986	>	fail("Test timed out");
987		}
988		}
989		}
990
991	<	class ShortInterruptedRunnable implements Runnable {
992	<	public void run() {
991	>	/**
992	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
993	>	* terminate (using {@link Thread#join(long)}), else interrupts
994	>	* the thread (in the hope that it may terminate later) and fails.
995	>	*/
996	>	void awaitTermination(Thread t) {
997	>	awaitTermination(t, LONG_DELAY_MS);
998	>	}
999	>
1000	>	// Some convenient Runnable classes
1001	>
1002	>	public abstract class CheckedRunnable implements Runnable {
1003	>	protected abstract void realRun() throws Throwable;
1004	>
1005	>	public final void run() {
1006		try {
1007	<	Thread.sleep(SHORT_DELAY_MS);
1008	<	threadShouldThrow();
1009	<	}
414	<	catch(InterruptedException success) {
1007	>	realRun();
1008	>	} catch (Throwable t) {
1009	>	threadUnexpectedException(t);
1010		}
1011		}
1012		}
1013
1014	<	class SmallRunnable implements Runnable {
1015	<	public void run() {
1014	>	public abstract class RunnableShouldThrow implements Runnable {
1015	>	protected abstract void realRun() throws Throwable;
1016	>
1017	>	final Class<?> exceptionClass;
1018	>
1019	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1020	>	this.exceptionClass = exceptionClass;
1021	>	}
1022	>
1023	>	public final void run() {
1024		try {
1025	<	Thread.sleep(SMALL_DELAY_MS);
1026	<	}
1027	<	catch(Exception e) {
1028	<	threadUnexpectedException();
1025	>	realRun();
1026	>	threadShouldThrow(exceptionClass.getSimpleName());
1027	>	} catch (Throwable t) {
1028	>	if (! exceptionClass.isInstance(t))
1029	>	threadUnexpectedException(t);
1030		}
1031		}
1032		}
1033
1034	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1035	<	public void run() {
1034	>	public abstract class ThreadShouldThrow extends Thread {
1035	>	protected abstract void realRun() throws Throwable;
1036	>
1037	>	final Class<?> exceptionClass;
1038	>
1039	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1040	>	this.exceptionClass = exceptionClass;
1041	>	}
1042	>
1043	>	public final void run() {
1044		try {
1045	<	Thread.sleep(SMALL_DELAY_MS);
1046	<	}
1047	<	catch(Exception e) {
1045	>	realRun();
1046	>	threadShouldThrow(exceptionClass.getSimpleName());
1047	>	} catch (Throwable t) {
1048	>	if (! exceptionClass.isInstance(t))
1049	>	threadUnexpectedException(t);
1050		}
1051		}
1052		}
1053
1054	<	class SmallCallable implements Callable {
1055	<	public Object call() {
1054	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1055	>	protected abstract void realRun() throws Throwable;
1056	>
1057	>	public final void run() {
1058		try {
1059	<	Thread.sleep(SMALL_DELAY_MS);
1060	<	}
1061	<	catch(Exception e) {
1062	<	threadUnexpectedException();
1059	>	realRun();
1060	>	threadShouldThrow("InterruptedException");
1061	>	} catch (InterruptedException success) {
1062	>	threadAssertFalse(Thread.interrupted());
1063	>	} catch (Throwable t) {
1064	>	threadUnexpectedException(t);
1065		}
448	–	return Boolean.TRUE;
1066		}
1067		}
1068
1069	<	class SmallInterruptedRunnable implements Runnable {
1070	<	public void run() {
1069	>	public abstract class CheckedCallable<T> implements Callable<T> {
1070	>	protected abstract T realCall() throws Throwable;
1071	>
1072	>	public final T call() {
1073		try {
1074	<	Thread.sleep(SMALL_DELAY_MS);
1075	<	threadShouldThrow();
1076	<	}
1077	<	catch(InterruptedException success) {
1074	>	return realCall();
1075	>	} catch (Throwable t) {
1076	>	threadUnexpectedException(t);
1077	>	return null;
1078		}
1079		}
1080		}
1081
1082	+	public abstract class CheckedInterruptedCallable<T>
1083	+	implements Callable<T> {
1084	+	protected abstract T realCall() throws Throwable;
1085
1086	<	class MediumRunnable implements Runnable {
465	<	public void run() {
1086	>	public final T call() {
1087		try {
1088	<	Thread.sleep(MEDIUM_DELAY_MS);
1089	<	}
1090	<	catch(Exception e) {
1091	<	threadUnexpectedException();
1088	>	T result = realCall();
1089	>	threadShouldThrow("InterruptedException");
1090	>	return result;
1091	>	} catch (InterruptedException success) {
1092	>	threadAssertFalse(Thread.interrupted());
1093	>	} catch (Throwable t) {
1094	>	threadUnexpectedException(t);
1095		}
1096	+	return null;
1097		}
1098		}
1099
1100	<	class MediumInterruptedRunnable implements Runnable {
1101	<	public void run() {
1100	>	public static class NoOpRunnable implements Runnable {
1101	>	public void run() {}
1102	>	}
1103	>
1104	>	public static class NoOpCallable implements Callable {
1105	>	public Object call() { return Boolean.TRUE; }
1106	>	}
1107	>
1108	>	public static final String TEST_STRING = "a test string";
1109	>
1110	>	public static class StringTask implements Callable<String> {
1111	>	public String call() { return TEST_STRING; }
1112	>	}
1113	>
1114	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1115	>	return new CheckedCallable<String>() {
1116	>	protected String realCall() {
1117	>	try {
1118	>	latch.await();
1119	>	} catch (InterruptedException quittingTime) {}
1120	>	return TEST_STRING;
1121	>	}};
1122	>	}
1123	>
1124	>	public Runnable awaiter(final CountDownLatch latch) {
1125	>	return new CheckedRunnable() {
1126	>	public void realRun() throws InterruptedException {
1127	>	await(latch);
1128	>	}};
1129	>	}
1130	>
1131	>	public void await(CountDownLatch latch) {
1132	>	try {
1133	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1134	>	} catch (Throwable t) {
1135	>	threadUnexpectedException(t);
1136	>	}
1137	>	}
1138	>
1139	>	public void await(Semaphore semaphore) {
1140	>	try {
1141	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1142	>	} catch (Throwable t) {
1143	>	threadUnexpectedException(t);
1144	>	}
1145	>	}
1146	>
1147	>	//     /**
1148	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1149	>	//      */
1150	>	//     public void await(AtomicBoolean flag) {
1151	>	//         await(flag, LONG_DELAY_MS);
1152	>	//     }
1153	>
1154	>	//     /**
1155	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1156	>	//      */
1157	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1158	>	//         long startTime = System.nanoTime();
1159	>	//         while (!flag.get()) {
1160	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1161	>	//                 throw new AssertionFailedError("timed out");
1162	>	//             Thread.yield();
1163	>	//         }
1164	>	//     }
1165	>
1166	>	public static class NPETask implements Callable<String> {
1167	>	public String call() { throw new NullPointerException(); }
1168	>	}
1169	>
1170	>	public static class CallableOne implements Callable<Integer> {
1171	>	public Integer call() { return one; }
1172	>	}
1173	>
1174	>	public class ShortRunnable extends CheckedRunnable {
1175	>	protected void realRun() throws Throwable {
1176	>	delay(SHORT_DELAY_MS);
1177	>	}
1178	>	}
1179	>
1180	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1181	>	protected void realRun() throws InterruptedException {
1182	>	delay(SHORT_DELAY_MS);
1183	>	}
1184	>	}
1185	>
1186	>	public class SmallRunnable extends CheckedRunnable {
1187	>	protected void realRun() throws Throwable {
1188	>	delay(SMALL_DELAY_MS);
1189	>	}
1190	>	}
1191	>
1192	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1193	>	protected void realRun() {
1194		try {
1195	<	Thread.sleep(MEDIUM_DELAY_MS);
1196	<	threadShouldThrow();
480	<	}
481	<	catch(InterruptedException success) {
482	<	}
1195	>	delay(SMALL_DELAY_MS);
1196	>	} catch (InterruptedException ok) {}
1197		}
1198		}
1199
1200	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1201	<	public void run() {
1200	>	public class SmallCallable extends CheckedCallable {
1201	>	protected Object realCall() throws InterruptedException {
1202	>	delay(SMALL_DELAY_MS);
1203	>	return Boolean.TRUE;
1204	>	}
1205	>	}
1206	>
1207	>	public class MediumRunnable extends CheckedRunnable {
1208	>	protected void realRun() throws Throwable {
1209	>	delay(MEDIUM_DELAY_MS);
1210	>	}
1211	>	}
1212	>
1213	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1214	>	protected void realRun() throws InterruptedException {
1215	>	delay(MEDIUM_DELAY_MS);
1216	>	}
1217	>	}
1218	>
1219	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1220	>	return new CheckedRunnable() {
1221	>	protected void realRun() {
1222	>	try {
1223	>	delay(timeoutMillis);
1224	>	} catch (InterruptedException ok) {}
1225	>	}};
1226	>	}
1227	>
1228	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1229	>	protected void realRun() {
1230		try {
1231	<	Thread.sleep(MEDIUM_DELAY_MS);
1232	<	}
491	<	catch(InterruptedException success) {
492	<	}
1231	>	delay(MEDIUM_DELAY_MS);
1232	>	} catch (InterruptedException ok) {}
1233		}
1234		}
1235
1236	<	class LongPossiblyInterruptedRunnable implements Runnable {
1237	<	public void run() {
1236	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1237	>	protected void realRun() {
1238		try {
1239	<	Thread.sleep(LONG_DELAY_MS);
1240	<	}
501	<	catch(InterruptedException success) {
502	<	}
1239	>	delay(LONG_DELAY_MS);
1240	>	} catch (InterruptedException ok) {}
1241		}
1242		}
1243
1244		/**
1245		* For use as ThreadFactory in constructors
1246		*/
1247	<	static class SimpleThreadFactory implements ThreadFactory{
1248	<	public Thread newThread(Runnable r){
1247	>	public static class SimpleThreadFactory implements ThreadFactory {
1248	>	public Thread newThread(Runnable r) {
1249		return new Thread(r);
1250		}
1251		}
1252
1253	<	static class TrackedShortRunnable implements Runnable {
1254	<	volatile boolean done = false;
1253	>	public interface TrackedRunnable extends Runnable {
1254	>	boolean isDone();
1255	>	}
1256	>
1257	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1258	>	return new TrackedRunnable() {
1259	>	private volatile boolean done = false;
1260	>	public boolean isDone() { return done; }
1261	>	public void run() {
1262	>	try {
1263	>	delay(timeoutMillis);
1264	>	done = true;
1265	>	} catch (InterruptedException ok) {}
1266	>	}
1267	>	};
1268	>	}
1269	>
1270	>	public static class TrackedShortRunnable implements Runnable {
1271	>	public volatile boolean done = false;
1272		public void run() {
1273		try {
1274	<	Thread.sleep(SMALL_DELAY_MS);
1274	>	delay(SHORT_DELAY_MS);
1275		done = true;
1276	<	} catch(Exception e){
522	<	}
1276	>	} catch (InterruptedException ok) {}
1277		}
1278		}
1279
1280	<	static class TrackedMediumRunnable implements Runnable {
1281	<	volatile boolean done = false;
1280	>	public static class TrackedSmallRunnable implements Runnable {
1281	>	public volatile boolean done = false;
1282		public void run() {
1283		try {
1284	<	Thread.sleep(MEDIUM_DELAY_MS);
1284	>	delay(SMALL_DELAY_MS);
1285		done = true;
1286	<	} catch(Exception e){
533	<	}
1286	>	} catch (InterruptedException ok) {}
1287		}
1288		}
1289
1290	<	static class TrackedLongRunnable implements Runnable {
1291	<	volatile boolean done = false;
1290	>	public static class TrackedMediumRunnable implements Runnable {
1291	>	public volatile boolean done = false;
1292		public void run() {
1293		try {
1294	<	Thread.sleep(LONG_DELAY_MS);
1294	>	delay(MEDIUM_DELAY_MS);
1295		done = true;
1296	<	} catch(Exception e){
1297	<	}
1296	>	} catch (InterruptedException ok) {}
1297	>	}
1298	>	}
1299	>
1300	>	public static class TrackedLongRunnable implements Runnable {
1301	>	public volatile boolean done = false;
1302	>	public void run() {
1303	>	try {
1304	>	delay(LONG_DELAY_MS);
1305	>	done = true;
1306	>	} catch (InterruptedException ok) {}
1307		}
1308		}
1309
1310	<	static class TrackedNoOpRunnable implements Runnable {
1311	<	volatile boolean done = false;
1310	>	public static class TrackedNoOpRunnable implements Runnable {
1311	>	public volatile boolean done = false;
1312		public void run() {
1313		done = true;
1314		}
1315		}
1316
1317	<	static class TrackedCallable implements Callable {
1318	<	volatile boolean done = false;
1317	>	public static class TrackedCallable implements Callable {
1318	>	public volatile boolean done = false;
1319		public Object call() {
1320		try {
1321	<	Thread.sleep(SMALL_DELAY_MS);
1321	>	delay(SMALL_DELAY_MS);
1322		done = true;
1323	<	} catch(Exception e){
562	<	}
1323	>	} catch (InterruptedException ok) {}
1324		return Boolean.TRUE;
1325		}
1326		}
1327
1328	+	/**
1329	+	* Analog of CheckedRunnable for RecursiveAction
1330	+	*/
1331	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1332	+	protected abstract void realCompute() throws Throwable;
1333	+
1334	+	@Override protected final void compute() {
1335	+	try {
1336	+	realCompute();
1337	+	} catch (Throwable t) {
1338	+	threadUnexpectedException(t);
1339	+	}
1340	+	}
1341	+	}
1342	+
1343	+	/**
1344	+	* Analog of CheckedCallable for RecursiveTask
1345	+	*/
1346	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1347	+	protected abstract T realCompute() throws Throwable;
1348	+
1349	+	@Override protected final T compute() {
1350	+	try {
1351	+	return realCompute();
1352	+	} catch (Throwable t) {
1353	+	threadUnexpectedException(t);
1354	+	return null;
1355	+	}
1356	+	}
1357	+	}
1358
1359		/**
1360		* For use as RejectedExecutionHandler in constructors
1361		*/
1362	<	static class NoOpREHandler implements RejectedExecutionHandler{
1363	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1362	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1363	>	public void rejectedExecution(Runnable r,
1364	>	ThreadPoolExecutor executor) {}
1365		}
1366
1367	+	/**
1368	+	* A CyclicBarrier that uses timed await and fails with
1369	+	* AssertionFailedErrors instead of throwing checked exceptions.
1370	+	*/
1371	+	public class CheckedBarrier extends CyclicBarrier {
1372	+	public CheckedBarrier(int parties) { super(parties); }
1373	+
1374	+	public int await() {
1375	+	try {
1376	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1377	+	} catch (TimeoutException e) {
1378	+	throw new AssertionFailedError("timed out");
1379	+	} catch (Exception e) {
1380	+	AssertionFailedError afe =
1381	+	new AssertionFailedError("Unexpected exception: " + e);
1382	+	afe.initCause(e);
1383	+	throw afe;
1384	+	}
1385	+	}
1386	+	}
1387
1388	+	void checkEmpty(BlockingQueue q) {
1389	+	try {
1390	+	assertTrue(q.isEmpty());
1391	+	assertEquals(0, q.size());
1392	+	assertNull(q.peek());
1393	+	assertNull(q.poll());
1394	+	assertNull(q.poll(0, MILLISECONDS));
1395	+	assertEquals(q.toString(), "[]");
1396	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1397	+	assertFalse(q.iterator().hasNext());
1398	+	try {
1399	+	q.element();
1400	+	shouldThrow();
1401	+	} catch (NoSuchElementException success) {}
1402	+	try {
1403	+	q.iterator().next();
1404	+	shouldThrow();
1405	+	} catch (NoSuchElementException success) {}
1406	+	try {
1407	+	q.remove();
1408	+	shouldThrow();
1409	+	} catch (NoSuchElementException success) {}
1410	+	} catch (InterruptedException ie) {
1411	+	threadUnexpectedException(ie);
1412	+	}
1413	+	}
1414	+
1415	+	void assertSerialEquals(Object x, Object y) {
1416	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1417	+	}
1418	+
1419	+	void assertNotSerialEquals(Object x, Object y) {
1420	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1421	+	}
1422	+
1423	+	byte[] serialBytes(Object o) {
1424	+	try {
1425	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1426	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1427	+	oos.writeObject(o);
1428	+	oos.flush();
1429	+	oos.close();
1430	+	return bos.toByteArray();
1431	+	} catch (Throwable t) {
1432	+	threadUnexpectedException(t);
1433	+	return new byte[0];
1434	+	}
1435	+	}
1436	+
1437	+	@SuppressWarnings("unchecked")
1438	+	<T> T serialClone(T o) {
1439	+	try {
1440	+	ObjectInputStream ois = new ObjectInputStream
1441	+	(new ByteArrayInputStream(serialBytes(o)));
1442	+	T clone = (T) ois.readObject();
1443	+	assertSame(o.getClass(), clone.getClass());
1444	+	return clone;
1445	+	} catch (Throwable t) {
1446	+	threadUnexpectedException(t);
1447	+	return null;
1448	+	}
1449	+	}
1450	+
1451	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1452	+	Runnable... throwingActions) {
1453	+	for (Runnable throwingAction : throwingActions) {
1454	+	boolean threw = false;
1455	+	try { throwingAction.run(); }
1456	+	catch (Throwable t) {
1457	+	threw = true;
1458	+	if (!expectedExceptionClass.isInstance(t)) {
1459	+	AssertionFailedError afe =
1460	+	new AssertionFailedError
1461	+	("Expected " + expectedExceptionClass.getName() +
1462	+	", got " + t.getClass().getName());
1463	+	afe.initCause(t);
1464	+	threadUnexpectedException(afe);
1465	+	}
1466	+	}
1467	+	if (!threw)
1468	+	shouldThrow(expectedExceptionClass.getName());
1469	+	}
1470	+	}
1471		}

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