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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.20 by dl, Sun Jan 11 23:20:21 2004 UTC vs.
Revision 1.115 by jsr166, Wed May 14 21:06:38 2014 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
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
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	<	import java.security.*;
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.util.regex.Pattern;
30	>	import java.security.CodeSource;
31	>	import java.security.Permission;
32	>	import java.security.PermissionCollection;
33	>	import java.security.Permissions;
34	>	import java.security.Policy;
35	>	import java.security.ProtectionDomain;
36	>	import java.security.SecurityPermission;
37
38		/**
39		* Base class for JSR166 Junit TCK tests.  Defines some constants,
40		* utility methods and classes, as well as a simple framework for
41		* helping to make sure that assertions failing in generated threads
42		* cause the associated test that generated them to itself fail (which
43	<	* JUnit doe not otherwise arrange).  The rules for creating such
43	>	* JUnit does not otherwise arrange).  The rules for creating such
44		* tests are:
45		*
46		* <ol>
47		*
48		* <li> All assertions in code running in generated threads must use
49	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
49	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
50		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
51	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
51	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
52		* particularly recommended) for other code to use these forms too.
53		* Only the most typically used JUnit assertion methods are defined
54		* this way, but enough to live with.</li>
55		*
56		* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
57	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
57	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
58		* them. These methods are used to clear and check for thread
59		* assertion failures.</li>
60		*
61	<	* <li>All delays and timeouts must use one of the constants <tt>
62	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
63	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
61	>	* <li>All delays and timeouts must use one of the constants {@code
62	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
63	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
64		* discriminable from zero time, and always allows enough time for the
65		* small amounts of computation (creating a thread, calling a few
66		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
67		* is always discriminable as larger than SHORT and smaller than
68		* MEDIUM.  And so on. These constants are set to conservative values,
69		* but even so, if there is ever any doubt, they can all be increased
70	<	* in one spot to rerun tests on slower platforms</li>
70	>	* in one spot to rerun tests on slower platforms.</li>
71		*
72		* <li> All threads generated must be joined inside each test case
73	<	* method (or <tt>fail</tt> to do so) before returning from the
74	<	* method. The <tt> joinPool</tt> method can be used to do this when
73	>	* method (or {@code fail} to do so) before returning from the
74	>	* method. The {@code joinPool} method can be used to do this when
75		* using Executors.</li>
76		*
77		* </ol>
78		*
79	<	* <p> <b>Other notes</b>
79	>	* <p><b>Other notes</b>
80		* <ul>
81		*
82		* <li> Usually, there is one testcase method per JSR166 method
#	Line 63 | Line 86 | import java.security.*;
86		* "normal" behaviors differ significantly. And sometimes testcases
87		* cover multiple methods when they cannot be tested in
88		* isolation.</li>
89	<	*
89	>	*
90		* <li> The documentation style for testcases is to provide as javadoc
91		* a simple sentence or two describing the property that the testcase
92		* method purports to test. The javadocs do not say anything about how
#	Line 80 | Line 103 | import java.security.*;
103		* any particular package to simplify things for people integrating
104		* them in TCK test suites.</li>
105		*
106	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
106	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
107		* runs all JSR166 unit tests.</li>
108		*
109		* </ul>
110		*/
111		public class JSR166TestCase extends TestCase {
112	+	private static final boolean useSecurityManager =
113	+	Boolean.getBoolean("jsr166.useSecurityManager");
114	+
115	+	protected static final boolean expensiveTests =
116	+	Boolean.getBoolean("jsr166.expensiveTests");
117	+
118	+	/**
119	+	* If true, report on stdout all "slow" tests, that is, ones that
120	+	* take more than profileThreshold milliseconds to execute.
121	+	*/
122	+	private static final boolean profileTests =
123	+	Boolean.getBoolean("jsr166.profileTests");
124	+
125		/**
126	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
127	<	*/
128	<	public static void main (String[] args) {
129	<	int iters = 1;
130	<	if (args.length > 0)
131	<	iters = Integer.parseInt(args[0]);
126	>	* The number of milliseconds that tests are permitted for
127	>	* execution without being reported, when profileTests is set.
128	>	*/
129	>	private static final long profileThreshold =
130	>	Long.getLong("jsr166.profileThreshold", 100);
131	>
132	>	/**
133	>	* The number of repetitions per test (for tickling rare bugs).
134	>	*/
135	>	private static final int runsPerTest =
136	>	Integer.getInteger("jsr166.runsPerTest", 1);
137	>
138	>	/**
139	>	* A filter for tests to run, matching strings of the form
140	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
141	>	* Usefully combined with jsr166.runsPerTest.
142	>	*/
143	>	private static final Pattern methodFilter = methodFilter();
144	>
145	>	private static Pattern methodFilter() {
146	>	String regex = System.getProperty("jsr166.methodFilter");
147	>	return (regex == null) ? null : Pattern.compile(regex);
148	>	}
149	>
150	>	protected void runTest() throws Throwable {
151	>	if (methodFilter == null
152	>	|| methodFilter.matcher(toString()).find()) {
153	>	for (int i = 0; i < runsPerTest; i++) {
154	>	if (profileTests)
155	>	runTestProfiled();
156	>	else
157	>	super.runTest();
158	>	}
159	>	}
160	>	}
161	>
162	>	protected void runTestProfiled() throws Throwable {
163	>	long t0 = System.nanoTime();
164	>	try {
165	>	super.runTest();
166	>	} finally {
167	>	long elapsedMillis =
168	>	(System.nanoTime() - t0) / (1000L * 1000L);
169	>	if (elapsedMillis >= profileThreshold)
170	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
171	>	}
172	>	}
173	>
174	>	/**
175	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
176	>	* Optional command line arg provides the number of iterations to
177	>	* repeat running the tests.
178	>	*/
179	>	public static void main(String[] args) {
180	>	if (useSecurityManager) {
181	>	System.err.println("Setting a permissive security manager");
182	>	Policy.setPolicy(permissivePolicy());
183	>	System.setSecurityManager(new SecurityManager());
184	>	}
185	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
186	>
187		Test s = suite();
188	<	for (int i = 0; i < iters; ++i)
189	<	junit.textui.TestRunner.run (s);
188	>	for (int i = 0; i < iters; ++i) {
189	>	junit.textui.TestRunner.run(s);
190	>	System.gc();
191	>	System.runFinalization();
192	>	}
193	>	System.exit(0);
194	>	}
195	>
196	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
197	>	TestSuite suite = new TestSuite();
198	>	for (Object suiteOrClass : suiteOrClasses) {
199	>	if (suiteOrClass instanceof TestSuite)
200	>	suite.addTest((TestSuite) suiteOrClass);
201	>	else if (suiteOrClass instanceof Class)
202	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
203	>	else
204	>	throw new ClassCastException("not a test suite or class");
205	>	}
206	>	return suite;
207	>	}
208	>
209	>	public static void addNamedTestClasses(TestSuite suite,
210	>	String... testClassNames) {
211	>	for (String testClassName : testClassNames) {
212	>	try {
213	>	Class<?> testClass = Class.forName(testClassName);
214	>	Method m = testClass.getDeclaredMethod("suite",
215	>	new Class<?>[0]);
216	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
217	>	} catch (Exception e) {
218	>	throw new Error("Missing test class", e);
219	>	}
220	>	}
221	>	}
222	>
223	>	public static final double JAVA_CLASS_VERSION;
224	>	public static final String JAVA_SPECIFICATION_VERSION;
225	>	static {
226	>	try {
227	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
228	>	new java.security.PrivilegedAction<Double>() {
229	>	public Double run() {
230	>	return Double.valueOf(System.getProperty("java.class.version"));}});
231	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
232	>	new java.security.PrivilegedAction<String>() {
233	>	public String run() {
234	>	return System.getProperty("java.specification.version");}});
235	>	} catch (Throwable t) {
236	>	throw new Error(t);
237	>	}
238	>	}
239	>
240	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
241	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
242	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
243	>	public static boolean atLeastJava9() {
244	>	// As of 2014-05, java9 still uses 52.0 class file version
245	>	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
246		}
247
248		/**
249	<	* Collects all JSR166 unit tests as one suite
250	<	*/
251	<	public static Test suite ( ) {
252	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
253	<
254	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
255	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
256	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
257	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
258	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
259	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
260	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
261	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
262	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
263	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
264	<	suite.addTest(new TestSuite(AtomicLongTest.class));
265	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
266	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
267	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
268	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
269	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
270	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
271	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
272	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
273	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
274	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
275	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
276	<	suite.addTest(new TestSuite(DelayQueueTest.class));
277	<	suite.addTest(new TestSuite(ExchangerTest.class));
278	<	suite.addTest(new TestSuite(ExecutorsTest.class));
279	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
280	<	suite.addTest(new TestSuite(FutureTaskTest.class));
281	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
282	<	suite.addTest(new TestSuite(LinkedListTest.class));
283	<	suite.addTest(new TestSuite(LockSupportTest.class));
284	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
285	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
286	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
287	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
288	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
289	<	suite.addTest(new TestSuite(SemaphoreTest.class));
290	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
291	<	suite.addTest(new TestSuite(SystemTest.class));
292	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
293	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
294	<	suite.addTest(new TestSuite(ThreadTest.class));
295	<	suite.addTest(new TestSuite(TimeUnitTest.class));
296	<
249	>	* Collects all JSR166 unit tests as one suite.
250	>	*/
251	>	public static Test suite() {
252	>	// Java7+ test classes
253	>	TestSuite suite = newTestSuite(
254	>	ForkJoinPoolTest.suite(),
255	>	ForkJoinTaskTest.suite(),
256	>	RecursiveActionTest.suite(),
257	>	RecursiveTaskTest.suite(),
258	>	LinkedTransferQueueTest.suite(),
259	>	PhaserTest.suite(),
260	>	ThreadLocalRandomTest.suite(),
261	>	AbstractExecutorServiceTest.suite(),
262	>	AbstractQueueTest.suite(),
263	>	AbstractQueuedSynchronizerTest.suite(),
264	>	AbstractQueuedLongSynchronizerTest.suite(),
265	>	ArrayBlockingQueueTest.suite(),
266	>	ArrayDequeTest.suite(),
267	>	AtomicBooleanTest.suite(),
268	>	AtomicIntegerArrayTest.suite(),
269	>	AtomicIntegerFieldUpdaterTest.suite(),
270	>	AtomicIntegerTest.suite(),
271	>	AtomicLongArrayTest.suite(),
272	>	AtomicLongFieldUpdaterTest.suite(),
273	>	AtomicLongTest.suite(),
274	>	AtomicMarkableReferenceTest.suite(),
275	>	AtomicReferenceArrayTest.suite(),
276	>	AtomicReferenceFieldUpdaterTest.suite(),
277	>	AtomicReferenceTest.suite(),
278	>	AtomicStampedReferenceTest.suite(),
279	>	ConcurrentHashMapTest.suite(),
280	>	ConcurrentLinkedDequeTest.suite(),
281	>	ConcurrentLinkedQueueTest.suite(),
282	>	ConcurrentSkipListMapTest.suite(),
283	>	ConcurrentSkipListSubMapTest.suite(),
284	>	ConcurrentSkipListSetTest.suite(),
285	>	ConcurrentSkipListSubSetTest.suite(),
286	>	CopyOnWriteArrayListTest.suite(),
287	>	CopyOnWriteArraySetTest.suite(),
288	>	CountDownLatchTest.suite(),
289	>	CyclicBarrierTest.suite(),
290	>	DelayQueueTest.suite(),
291	>	EntryTest.suite(),
292	>	ExchangerTest.suite(),
293	>	ExecutorsTest.suite(),
294	>	ExecutorCompletionServiceTest.suite(),
295	>	FutureTaskTest.suite(),
296	>	LinkedBlockingDequeTest.suite(),
297	>	LinkedBlockingQueueTest.suite(),
298	>	LinkedListTest.suite(),
299	>	LockSupportTest.suite(),
300	>	PriorityBlockingQueueTest.suite(),
301	>	PriorityQueueTest.suite(),
302	>	ReentrantLockTest.suite(),
303	>	ReentrantReadWriteLockTest.suite(),
304	>	ScheduledExecutorTest.suite(),
305	>	ScheduledExecutorSubclassTest.suite(),
306	>	SemaphoreTest.suite(),
307	>	SynchronousQueueTest.suite(),
308	>	SystemTest.suite(),
309	>	ThreadLocalTest.suite(),
310	>	ThreadPoolExecutorTest.suite(),
311	>	ThreadPoolExecutorSubclassTest.suite(),
312	>	ThreadTest.suite(),
313	>	TimeUnitTest.suite(),
314	>	TreeMapTest.suite(),
315	>	TreeSetTest.suite(),
316	>	TreeSubMapTest.suite(),
317	>	TreeSubSetTest.suite());
318	>
319	>	// Java8+ test classes
320	>	if (atLeastJava8()) {
321	>	String[] java8TestClassNames = {
322	>	"Atomic8Test",
323	>	"CompletableFutureTest",
324	>	"ConcurrentHashMap8Test",
325	>	"CountedCompleterTest",
326	>	"DoubleAccumulatorTest",
327	>	"DoubleAdderTest",
328	>	"ForkJoinPool8Test",
329	>	"ForkJoinTask8Test",
330	>	"LongAccumulatorTest",
331	>	"LongAdderTest",
332	>	"SplittableRandomTest",
333	>	"StampedLockTest",
334	>	"ThreadLocalRandom8Test",
335	>	};
336	>	addNamedTestClasses(suite, java8TestClassNames);
337	>	}
338	>
339	>	// Java9+ test classes
340	>	if (atLeastJava9()) {
341	>	String[] java9TestClassNames = {
342	>	"ThreadPoolExecutor9Test",
343	>	};
344	>	addNamedTestClasses(suite, java9TestClassNames);
345	>	}
346	>
347		return suite;
348		}
349
350	+	// Delays for timing-dependent tests, in milliseconds.
351
352		public static long SHORT_DELAY_MS;
353		public static long SMALL_DELAY_MS;
354		public static long MEDIUM_DELAY_MS;
355		public static long LONG_DELAY_MS;
356
159	–
357		/**
358	<	* Return the shortest timed delay. This could
358	>	* Returns the shortest timed delay. This could
359		* be reimplemented to use for example a Property.
360	<	*/
360	>	*/
361		protected long getShortDelay() {
362	<	return 25;
362	>	return 50;
363		}
364
168	–
365		/**
366	<	* Set delays as multiples of SHORT_DELAY.
366	>	* Sets delays as multiples of SHORT_DELAY.
367		*/
368	<	protected  void setDelays() {
368	>	protected void setDelays() {
369		SHORT_DELAY_MS = getShortDelay();
370	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
370	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
371		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
372	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
372	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
373		}
374
375		/**
376	<	* Flag set true if any threadAssert methods fail
376	>	* Returns a timeout in milliseconds to be used in tests that
377	>	* verify that operations block or time out.
378		*/
379	<	volatile boolean threadFailed;
379	>	long timeoutMillis() {
380	>	return SHORT_DELAY_MS / 4;
381	>	}
382	>
383	>	/**
384	>	* Returns a new Date instance representing a time delayMillis
385	>	* milliseconds in the future.
386	>	*/
387	>	Date delayedDate(long delayMillis) {
388	>	return new Date(System.currentTimeMillis() + delayMillis);
389	>	}
390
391		/**
392	<	* Initialize test to indicate that no thread assertions have failed
392	>	* The first exception encountered if any threadAssertXXX method fails.
393		*/
394	<	public void setUp() {
394	>	private final AtomicReference<Throwable> threadFailure
395	>	= new AtomicReference<Throwable>(null);
396	>
397	>	/**
398	>	* Records an exception so that it can be rethrown later in the test
399	>	* harness thread, triggering a test case failure.  Only the first
400	>	* failure is recorded; subsequent calls to this method from within
401	>	* the same test have no effect.
402	>	*/
403	>	public void threadRecordFailure(Throwable t) {
404	>	threadFailure.compareAndSet(null, t);
405	>	}
406	>
407	>	public void setUp() {
408		setDelays();
189	–	threadFailed = false;
409		}
410
411		/**
412	<	* Trigger test case failure if any thread assertions have failed
412	>	* Extra checks that get done for all test cases.
413	>	*
414	>	* Triggers test case failure if any thread assertions have failed,
415	>	* by rethrowing, in the test harness thread, any exception recorded
416	>	* earlier by threadRecordFailure.
417	>	*
418	>	* Triggers test case failure if interrupt status is set in the main thread.
419		*/
420	<	public void tearDown() {
421	<	assertFalse(threadFailed);
420	>	public void tearDown() throws Exception {
421	>	Throwable t = threadFailure.getAndSet(null);
422	>	if (t != null) {
423	>	if (t instanceof Error)
424	>	throw (Error) t;
425	>	else if (t instanceof RuntimeException)
426	>	throw (RuntimeException) t;
427	>	else if (t instanceof Exception)
428	>	throw (Exception) t;
429	>	else {
430	>	AssertionFailedError afe =
431	>	new AssertionFailedError(t.toString());
432	>	afe.initCause(t);
433	>	throw afe;
434	>	}
435	>	}
436	>
437	>	if (Thread.interrupted())
438	>	throw new AssertionFailedError("interrupt status set in main thread");
439	>
440	>	checkForkJoinPoolThreadLeaks();
441		}
442
443		/**
444	<	* Fail, also setting status to indicate current testcase should fail
445	<	*/
444	>	* Find missing try { ... } finally { joinPool(e); }
445	>	*/
446	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
447	>	Thread[] survivors = new Thread[5];
448	>	int count = Thread.enumerate(survivors);
449	>	for (int i = 0; i < count; i++) {
450	>	Thread thread = survivors[i];
451	>	String name = thread.getName();
452	>	if (name.startsWith("ForkJoinPool-")) {
453	>	// give thread some time to terminate
454	>	thread.join(LONG_DELAY_MS);
455	>	if (!thread.isAlive()) continue;
456	>	thread.stop();
457	>	throw new AssertionFailedError
458	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
459	>	toString(), name));
460	>	}
461	>	}
462	>	}
463	>
464	>	/**
465	>	* Just like fail(reason), but additionally recording (using
466	>	* threadRecordFailure) any AssertionFailedError thrown, so that
467	>	* the current testcase will fail.
468	>	*/
469		public void threadFail(String reason) {
470	<	threadFailed = true;
471	<	fail(reason);
470	>	try {
471	>	fail(reason);
472	>	} catch (AssertionFailedError t) {
473	>	threadRecordFailure(t);
474	>	fail(reason);
475	>	}
476		}
477
478		/**
479	<	* If expression not true, set status to indicate current testcase
480	<	* should fail
481	<	*/
479	>	* Just like assertTrue(b), but additionally recording (using
480	>	* threadRecordFailure) any AssertionFailedError thrown, so that
481	>	* the current testcase will fail.
482	>	*/
483		public void threadAssertTrue(boolean b) {
484	<	if (!b) {
213	<	threadFailed = true;
484	>	try {
485		assertTrue(b);
486	+	} catch (AssertionFailedError t) {
487	+	threadRecordFailure(t);
488	+	throw t;
489		}
490		}
491
492		/**
493	<	* If expression not false, set status to indicate current testcase
494	<	* should fail
495	<	*/
493	>	* Just like assertFalse(b), but additionally recording (using
494	>	* threadRecordFailure) any AssertionFailedError thrown, so that
495	>	* the current testcase will fail.
496	>	*/
497		public void threadAssertFalse(boolean b) {
498	<	if (b) {
224	<	threadFailed = true;
498	>	try {
499		assertFalse(b);
500	+	} catch (AssertionFailedError t) {
501	+	threadRecordFailure(t);
502	+	throw t;
503		}
504		}
505
506		/**
507	<	* If argument not null, set status to indicate current testcase
508	<	* should fail
509	<	*/
507	>	* Just like assertNull(x), but additionally recording (using
508	>	* threadRecordFailure) any AssertionFailedError thrown, so that
509	>	* the current testcase will fail.
510	>	*/
511		public void threadAssertNull(Object x) {
512	<	if (x != null) {
235	<	threadFailed = true;
512	>	try {
513		assertNull(x);
514	+	} catch (AssertionFailedError t) {
515	+	threadRecordFailure(t);
516	+	throw t;
517		}
518		}
519
520		/**
521	<	* If arguments not equal, set status to indicate current testcase
522	<	* should fail
523	<	*/
521	>	* Just like assertEquals(x, y), but additionally recording (using
522	>	* threadRecordFailure) any AssertionFailedError thrown, so that
523	>	* the current testcase will fail.
524	>	*/
525		public void threadAssertEquals(long x, long y) {
526	<	if (x != y) {
246	<	threadFailed = true;
526	>	try {
527		assertEquals(x, y);
528	+	} catch (AssertionFailedError t) {
529	+	threadRecordFailure(t);
530	+	throw t;
531		}
532		}
533
534		/**
535	<	* If arguments not equal, set status to indicate current testcase
536	<	* should fail
537	<	*/
535	>	* Just like assertEquals(x, y), but additionally recording (using
536	>	* threadRecordFailure) any AssertionFailedError thrown, so that
537	>	* the current testcase will fail.
538	>	*/
539		public void threadAssertEquals(Object x, Object y) {
540	<	if (x != y && (x == null || !x.equals(y))) {
257	<	threadFailed = true;
540	>	try {
541		assertEquals(x, y);
542	+	} catch (AssertionFailedError t) {
543	+	threadRecordFailure(t);
544	+	throw t;
545	+	} catch (Throwable t) {
546	+	threadUnexpectedException(t);
547	+	}
548	+	}
549	+
550	+	/**
551	+	* Just like assertSame(x, y), but additionally recording (using
552	+	* threadRecordFailure) any AssertionFailedError thrown, so that
553	+	* the current testcase will fail.
554	+	*/
555	+	public void threadAssertSame(Object x, Object y) {
556	+	try {
557	+	assertSame(x, y);
558	+	} catch (AssertionFailedError t) {
559	+	threadRecordFailure(t);
560	+	throw t;
561		}
562		}
563
564		/**
565	<	* threadFail with message "should throw exception"
566	<	*/
565	>	* Calls threadFail with message "should throw exception".
566	>	*/
567		public void threadShouldThrow() {
568	<	threadFailed = true;
267	<	fail("should throw exception");
568	>	threadFail("should throw exception");
569		}
570
571		/**
572	<	* threadFail with message "Unexpected exception"
572	>	* Calls threadFail with message "should throw" + exceptionName.
573		*/
574	<	public void threadUnexpectedException() {
575	<	threadFailed = true;
275	<	fail("Unexpected exception");
574	>	public void threadShouldThrow(String exceptionName) {
575	>	threadFail("should throw " + exceptionName);
576		}
577
578	+	/**
579	+	* Records the given exception using {@link #threadRecordFailure},
580	+	* then rethrows the exception, wrapping it in an
581	+	* AssertionFailedError if necessary.
582	+	*/
583	+	public void threadUnexpectedException(Throwable t) {
584	+	threadRecordFailure(t);
585	+	t.printStackTrace();
586	+	if (t instanceof RuntimeException)
587	+	throw (RuntimeException) t;
588	+	else if (t instanceof Error)
589	+	throw (Error) t;
590	+	else {
591	+	AssertionFailedError afe =
592	+	new AssertionFailedError("unexpected exception: " + t);
593	+	afe.initCause(t);
594	+	throw afe;
595	+	}
596	+	}
597
598		/**
599	<	* Wait out termination of a thread pool or fail doing so
599	>	* Delays, via Thread.sleep, for the given millisecond delay, but
600	>	* if the sleep is shorter than specified, may re-sleep or yield
601	>	* until time elapses.
602		*/
603	<	public void joinPool(ExecutorService exec) {
603	>	static void delay(long millis) throws InterruptedException {
604	>	long startTime = System.nanoTime();
605	>	long ns = millis * 1000 * 1000;
606	>	for (;;) {
607	>	if (millis > 0L)
608	>	Thread.sleep(millis);
609	>	else // too short to sleep
610	>	Thread.yield();
611	>	long d = ns - (System.nanoTime() - startTime);
612	>	if (d > 0L)
613	>	millis = d / (1000 * 1000);
614	>	else
615	>	break;
616	>	}
617	>	}
618	>
619	>	/**
620	>	* Waits out termination of a thread pool or fails doing so.
621	>	*/
622	>	void joinPool(ExecutorService exec) {
623		try {
624		exec.shutdown();
625	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
626	<	} catch(InterruptedException ie) {
627	<	fail("Unexpected exception");
625	>	assertTrue("ExecutorService did not terminate in a timely manner",
626	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
627	>	} catch (SecurityException ok) {
628	>	// Allowed in case test doesn't have privs
629	>	} catch (InterruptedException ie) {
630	>	fail("Unexpected InterruptedException");
631		}
632		}
633
634	+	/**
635	+	* A debugging tool to print all stack traces, as jstack does.
636	+	*/
637	+	static void printAllStackTraces() {
638	+	for (ThreadInfo info :
639	+	ManagementFactory.getThreadMXBean()
640	+	.dumpAllThreads(true, true))
641	+	System.err.print(info);
642	+	}
643	+
644	+	/**
645	+	* Checks that thread does not terminate within the default
646	+	* millisecond delay of {@code timeoutMillis()}.
647	+	*/
648	+	void assertThreadStaysAlive(Thread thread) {
649	+	assertThreadStaysAlive(thread, timeoutMillis());
650	+	}
651	+
652	+	/**
653	+	* Checks that thread does not terminate within the given millisecond delay.
654	+	*/
655	+	void assertThreadStaysAlive(Thread thread, long millis) {
656	+	try {
657	+	// No need to optimize the failing case via Thread.join.
658	+	delay(millis);
659	+	assertTrue(thread.isAlive());
660	+	} catch (InterruptedException ie) {
661	+	fail("Unexpected InterruptedException");
662	+	}
663	+	}
664	+
665	+	/**
666	+	* Checks that the threads do not terminate within the default
667	+	* millisecond delay of {@code timeoutMillis()}.
668	+	*/
669	+	void assertThreadsStayAlive(Thread... threads) {
670	+	assertThreadsStayAlive(timeoutMillis(), threads);
671	+	}
672	+
673	+	/**
674	+	* Checks that the threads do not terminate within the given millisecond delay.
675	+	*/
676	+	void assertThreadsStayAlive(long millis, Thread... threads) {
677	+	try {
678	+	// No need to optimize the failing case via Thread.join.
679	+	delay(millis);
680	+	for (Thread thread : threads)
681	+	assertTrue(thread.isAlive());
682	+	} catch (InterruptedException ie) {
683	+	fail("Unexpected InterruptedException");
684	+	}
685	+	}
686	+
687	+	/**
688	+	* Checks that future.get times out, with the default timeout of
689	+	* {@code timeoutMillis()}.
690	+	*/
691	+	void assertFutureTimesOut(Future future) {
692	+	assertFutureTimesOut(future, timeoutMillis());
693	+	}
694	+
695	+	/**
696	+	* Checks that future.get times out, with the given millisecond timeout.
697	+	*/
698	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
699	+	long startTime = System.nanoTime();
700	+	try {
701	+	future.get(timeoutMillis, MILLISECONDS);
702	+	shouldThrow();
703	+	} catch (TimeoutException success) {
704	+	} catch (Exception e) {
705	+	threadUnexpectedException(e);
706	+	} finally { future.cancel(true); }
707	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
708	+	}
709
710		/**
711	<	* fail with message "should throw exception"
712	<	*/
711	>	* Fails with message "should throw exception".
712	>	*/
713		public void shouldThrow() {
714		fail("Should throw exception");
715		}
716
717		/**
718	<	* fail with message "Unexpected exception"
718	>	* Fails with message "should throw " + exceptionName.
719		*/
720	<	public void unexpectedException() {
721	<	fail("Unexpected exception");
720	>	public void shouldThrow(String exceptionName) {
721	>	fail("Should throw " + exceptionName);
722		}
723
306	–
724		/**
725		* The number of elements to place in collections, arrays, etc.
726		*/
727	<	static final int SIZE = 20;
727	>	public static final int SIZE = 20;
728
729		// Some convenient Integer constants
730
731	<	static final Integer zero = new Integer(0);
732	<	static final Integer one = new Integer(1);
733	<	static final Integer two = new Integer(2);
734	<	static final Integer three  = new Integer(3);
735	<	static final Integer four  = new Integer(4);
736	<	static final Integer five  = new Integer(5);
737	<	static final Integer six = new Integer(6);
738	<	static final Integer seven = new Integer(7);
739	<	static final Integer eight = new Integer(8);
740	<	static final Integer nine = new Integer(9);
741	<	static final Integer m1  = new Integer(-1);
742	<	static final Integer m2  = new Integer(-2);
743	<	static final Integer m3  = new Integer(-3);
744	<	static final Integer m4 = new Integer(-4);
745	<	static final Integer m5 = new Integer(-5);
746	<	static final Integer m10 = new Integer(-10);
731	>	public static final Integer zero  = new Integer(0);
732	>	public static final Integer one   = new Integer(1);
733	>	public static final Integer two   = new Integer(2);
734	>	public static final Integer three = new Integer(3);
735	>	public static final Integer four  = new Integer(4);
736	>	public static final Integer five  = new Integer(5);
737	>	public static final Integer six   = new Integer(6);
738	>	public static final Integer seven = new Integer(7);
739	>	public static final Integer eight = new Integer(8);
740	>	public static final Integer nine  = new Integer(9);
741	>	public static final Integer m1  = new Integer(-1);
742	>	public static final Integer m2  = new Integer(-2);
743	>	public static final Integer m3  = new Integer(-3);
744	>	public static final Integer m4  = new Integer(-4);
745	>	public static final Integer m5  = new Integer(-5);
746	>	public static final Integer m6  = new Integer(-6);
747	>	public static final Integer m10 = new Integer(-10);
748	>
749	>	/**
750	>	* Runs Runnable r with a security policy that permits precisely
751	>	* the specified permissions.  If there is no current security
752	>	* manager, the runnable is run twice, both with and without a
753	>	* security manager.  We require that any security manager permit
754	>	* getPolicy/setPolicy.
755	>	*/
756	>	public void runWithPermissions(Runnable r, Permission... permissions) {
757	>	SecurityManager sm = System.getSecurityManager();
758	>	if (sm == null) {
759	>	r.run();
760	>	}
761	>	runWithSecurityManagerWithPermissions(r, permissions);
762	>	}
763
764	+	/**
765	+	* Runs Runnable r with a security policy that permits precisely
766	+	* the specified permissions.  If there is no current security
767	+	* manager, a temporary one is set for the duration of the
768	+	* Runnable.  We require that any security manager permit
769	+	* getPolicy/setPolicy.
770	+	*/
771	+	public void runWithSecurityManagerWithPermissions(Runnable r,
772	+	Permission... permissions) {
773	+	SecurityManager sm = System.getSecurityManager();
774	+	if (sm == null) {
775	+	Policy savedPolicy = Policy.getPolicy();
776	+	try {
777	+	Policy.setPolicy(permissivePolicy());
778	+	System.setSecurityManager(new SecurityManager());
779	+	runWithSecurityManagerWithPermissions(r, permissions);
780	+	} finally {
781	+	System.setSecurityManager(null);
782	+	Policy.setPolicy(savedPolicy);
783	+	}
784	+	} else {
785	+	Policy savedPolicy = Policy.getPolicy();
786	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
787	+	Policy.setPolicy(policy);
788	+
789	+	try {
790	+	r.run();
791	+	} finally {
792	+	policy.addPermission(new SecurityPermission("setPolicy"));
793	+	Policy.setPolicy(savedPolicy);
794	+	}
795	+	}
796	+	}
797	+
798	+	/**
799	+	* Runs a runnable without any permissions.
800	+	*/
801	+	public void runWithoutPermissions(Runnable r) {
802	+	runWithPermissions(r);
803	+	}
804
805		/**
806		* A security policy where new permissions can be dynamically added
807		* or all cleared.
808		*/
809	<	static class AdjustablePolicy extends java.security.Policy {
809	>	public static class AdjustablePolicy extends java.security.Policy {
810		Permissions perms = new Permissions();
811	<	AdjustablePolicy() { }
811	>	AdjustablePolicy(Permission... permissions) {
812	>	for (Permission permission : permissions)
813	>	perms.add(permission);
814	>	}
815		void addPermission(Permission perm) { perms.add(perm); }
816		void clearPermissions() { perms = new Permissions(); }
817	<	public PermissionCollection getPermissions(CodeSource cs) {
818	<	return perms;
819	<	}
820	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
821	<	return perms;
822	<	}
823	<	public boolean implies(ProtectionDomain pd, Permission p) {
824	<	return perms.implies(p);
825	<	}
826	<	public void refresh() {}
817	>	public PermissionCollection getPermissions(CodeSource cs) {
818	>	return perms;
819	>	}
820	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
821	>	return perms;
822	>	}
823	>	public boolean implies(ProtectionDomain pd, Permission p) {
824	>	return perms.implies(p);
825	>	}
826	>	public void refresh() {}
827	>	public String toString() {
828	>	List<Permission> ps = new ArrayList<Permission>();
829	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
830	>	ps.add(e.nextElement());
831	>	return "AdjustablePolicy with permissions " + ps;
832	>	}
833		}
834
835	+	/**
836	+	* Returns a policy containing all the permissions we ever need.
837	+	*/
838	+	public static Policy permissivePolicy() {
839	+	return new AdjustablePolicy
840	+	// Permissions j.u.c. needs directly
841	+	(new RuntimePermission("modifyThread"),
842	+	new RuntimePermission("getClassLoader"),
843	+	new RuntimePermission("setContextClassLoader"),
844	+	// Permissions needed to change permissions!
845	+	new SecurityPermission("getPolicy"),
846	+	new SecurityPermission("setPolicy"),
847	+	new RuntimePermission("setSecurityManager"),
848	+	// Permissions needed by the junit test harness
849	+	new RuntimePermission("accessDeclaredMembers"),
850	+	new PropertyPermission("*", "read"),
851	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
852	+	}
853
854	<	// Some convenient Runnable classes
854	>	/**
855	>	* Sleeps until the given time has elapsed.
856	>	* Throws AssertionFailedError if interrupted.
857	>	*/
858	>	void sleep(long millis) {
859	>	try {
860	>	delay(millis);
861	>	} catch (InterruptedException ie) {
862	>	AssertionFailedError afe =
863	>	new AssertionFailedError("Unexpected InterruptedException");
864	>	afe.initCause(ie);
865	>	throw afe;
866	>	}
867	>	}
868
869	<	static class NoOpRunnable implements Runnable {
870	<	public void run() {}
869	>	/**
870	>	* Spin-waits up to the specified number of milliseconds for the given
871	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
872	>	*/
873	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
874	>	long startTime = System.nanoTime();
875	>	for (;;) {
876	>	Thread.State s = thread.getState();
877	>	if (s == Thread.State.BLOCKED ||
878	>	s == Thread.State.WAITING ||
879	>	s == Thread.State.TIMED_WAITING)
880	>	return;
881	>	else if (s == Thread.State.TERMINATED)
882	>	fail("Unexpected thread termination");
883	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
884	>	threadAssertTrue(thread.isAlive());
885	>	return;
886	>	}
887	>	Thread.yield();
888	>	}
889		}
890
891	<	static class NoOpCallable implements Callable {
892	<	public Object call() { return Boolean.TRUE; }
891	>	/**
892	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
893	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
894	>	*/
895	>	void waitForThreadToEnterWaitState(Thread thread) {
896	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
897		}
898
899	<	static final String TEST_STRING = "a test string";
899	>	/**
900	>	* Returns the number of milliseconds since time given by
901	>	* startNanoTime, which must have been previously returned from a
902	>	* call to {@link System.nanoTime()}.
903	>	*/
904	>	long millisElapsedSince(long startNanoTime) {
905	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
906	>	}
907
908	<	static class StringTask implements Callable<String> {
909	<	public String call() { return TEST_STRING; }
908	>	/**
909	>	* Returns a new started daemon Thread running the given runnable.
910	>	*/
911	>	Thread newStartedThread(Runnable runnable) {
912	>	Thread t = new Thread(runnable);
913	>	t.setDaemon(true);
914	>	t.start();
915	>	return t;
916		}
917
918	<	static class NPETask implements Callable<String> {
919	<	public String call() { throw new NullPointerException(); }
918	>	/**
919	>	* Waits for the specified time (in milliseconds) for the thread
920	>	* to terminate (using {@link Thread#join(long)}), else interrupts
921	>	* the thread (in the hope that it may terminate later) and fails.
922	>	*/
923	>	void awaitTermination(Thread t, long timeoutMillis) {
924	>	try {
925	>	t.join(timeoutMillis);
926	>	} catch (InterruptedException ie) {
927	>	threadUnexpectedException(ie);
928	>	} finally {
929	>	if (t.getState() != Thread.State.TERMINATED) {
930	>	t.interrupt();
931	>	fail("Test timed out");
932	>	}
933	>	}
934		}
935
936	<	static class CallableOne implements Callable<Integer> {
937	<	public Integer call() { return one; }
936	>	/**
937	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
938	>	* terminate (using {@link Thread#join(long)}), else interrupts
939	>	* the thread (in the hope that it may terminate later) and fails.
940	>	*/
941	>	void awaitTermination(Thread t) {
942	>	awaitTermination(t, LONG_DELAY_MS);
943		}
944
945	<	class ShortRunnable implements Runnable {
946	<	public void run() {
945	>	// Some convenient Runnable classes
946	>
947	>	public abstract class CheckedRunnable implements Runnable {
948	>	protected abstract void realRun() throws Throwable;
949	>
950	>	public final void run() {
951		try {
952	<	Thread.sleep(SHORT_DELAY_MS);
953	<	}
954	<	catch(Exception e) {
384	<	threadUnexpectedException();
952	>	realRun();
953	>	} catch (Throwable t) {
954	>	threadUnexpectedException(t);
955		}
956		}
957		}
958
959	<	class ShortInterruptedRunnable implements Runnable {
960	<	public void run() {
959	>	public abstract class RunnableShouldThrow implements Runnable {
960	>	protected abstract void realRun() throws Throwable;
961	>
962	>	final Class<?> exceptionClass;
963	>
964	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
965	>	this.exceptionClass = exceptionClass;
966	>	}
967	>
968	>	public final void run() {
969		try {
970	<	Thread.sleep(SHORT_DELAY_MS);
971	<	threadShouldThrow();
972	<	}
973	<	catch(InterruptedException success) {
970	>	realRun();
971	>	threadShouldThrow(exceptionClass.getSimpleName());
972	>	} catch (Throwable t) {
973	>	if (! exceptionClass.isInstance(t))
974	>	threadUnexpectedException(t);
975		}
976		}
977		}
978
979	<	class SmallRunnable implements Runnable {
980	<	public void run() {
979	>	public abstract class ThreadShouldThrow extends Thread {
980	>	protected abstract void realRun() throws Throwable;
981	>
982	>	final Class<?> exceptionClass;
983	>
984	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
985	>	this.exceptionClass = exceptionClass;
986	>	}
987	>
988	>	public final void run() {
989		try {
990	<	Thread.sleep(SMALL_DELAY_MS);
991	<	}
992	<	catch(Exception e) {
993	<	threadUnexpectedException();
990	>	realRun();
991	>	threadShouldThrow(exceptionClass.getSimpleName());
992	>	} catch (Throwable t) {
993	>	if (! exceptionClass.isInstance(t))
994	>	threadUnexpectedException(t);
995		}
996		}
997		}
998
999	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1000	<	public void run() {
999	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1000	>	protected abstract void realRun() throws Throwable;
1001	>
1002	>	public final void run() {
1003		try {
1004	<	Thread.sleep(SMALL_DELAY_MS);
1005	<	}
1006	<	catch(Exception e) {
1004	>	realRun();
1005	>	threadShouldThrow("InterruptedException");
1006	>	} catch (InterruptedException success) {
1007	>	threadAssertFalse(Thread.interrupted());
1008	>	} catch (Throwable t) {
1009	>	threadUnexpectedException(t);
1010		}
1011		}
1012		}
1013
1014	<	class SmallCallable implements Callable {
1015	<	public Object call() {
1014	>	public abstract class CheckedCallable<T> implements Callable<T> {
1015	>	protected abstract T realCall() throws Throwable;
1016	>
1017	>	public final T call() {
1018		try {
1019	<	Thread.sleep(SMALL_DELAY_MS);
1020	<	}
1021	<	catch(Exception e) {
1022	<	threadUnexpectedException();
1019	>	return realCall();
1020	>	} catch (Throwable t) {
1021	>	threadUnexpectedException(t);
1022	>	return null;
1023		}
429	–	return Boolean.TRUE;
1024		}
1025		}
1026
1027	<	class SmallInterruptedRunnable implements Runnable {
1028	<	public void run() {
1027	>	public abstract class CheckedInterruptedCallable<T>
1028	>	implements Callable<T> {
1029	>	protected abstract T realCall() throws Throwable;
1030	>
1031	>	public final T call() {
1032		try {
1033	<	Thread.sleep(SMALL_DELAY_MS);
1034	<	threadShouldThrow();
1035	<	}
1036	<	catch(InterruptedException success) {
1033	>	T result = realCall();
1034	>	threadShouldThrow("InterruptedException");
1035	>	return result;
1036	>	} catch (InterruptedException success) {
1037	>	threadAssertFalse(Thread.interrupted());
1038	>	} catch (Throwable t) {
1039	>	threadUnexpectedException(t);
1040		}
1041	+	return null;
1042		}
1043		}
1044
1045	+	public static class NoOpRunnable implements Runnable {
1046	+	public void run() {}
1047	+	}
1048
1049	<	class MediumRunnable implements Runnable {
1050	<	public void run() {
1051	<	try {
1052	<	Thread.sleep(MEDIUM_DELAY_MS);
1053	<	}
1054	<	catch(Exception e) {
1055	<	threadUnexpectedException();
1056	<	}
1049	>	public static class NoOpCallable implements Callable {
1050	>	public Object call() { return Boolean.TRUE; }
1051	>	}
1052	>
1053	>	public static final String TEST_STRING = "a test string";
1054	>
1055	>	public static class StringTask implements Callable<String> {
1056	>	public String call() { return TEST_STRING; }
1057	>	}
1058	>
1059	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1060	>	return new CheckedCallable<String>() {
1061	>	protected String realCall() {
1062	>	try {
1063	>	latch.await();
1064	>	} catch (InterruptedException quittingTime) {}
1065	>	return TEST_STRING;
1066	>	}};
1067	>	}
1068	>
1069	>	public Runnable awaiter(final CountDownLatch latch) {
1070	>	return new CheckedRunnable() {
1071	>	public void realRun() throws InterruptedException {
1072	>	await(latch);
1073	>	}};
1074	>	}
1075	>
1076	>	public void await(CountDownLatch latch) {
1077	>	try {
1078	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1079	>	} catch (Throwable t) {
1080	>	threadUnexpectedException(t);
1081		}
1082		}
1083
1084	<	class MediumInterruptedRunnable implements Runnable {
1085	<	public void run() {
1084	>	public void await(Semaphore semaphore) {
1085	>	try {
1086	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1087	>	} catch (Throwable t) {
1088	>	threadUnexpectedException(t);
1089	>	}
1090	>	}
1091	>
1092	>	//     /**
1093	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1094	>	//      */
1095	>	//     public void await(AtomicBoolean flag) {
1096	>	//         await(flag, LONG_DELAY_MS);
1097	>	//     }
1098	>
1099	>	//     /**
1100	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1101	>	//      */
1102	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1103	>	//         long startTime = System.nanoTime();
1104	>	//         while (!flag.get()) {
1105	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1106	>	//                 throw new AssertionFailedError("timed out");
1107	>	//             Thread.yield();
1108	>	//         }
1109	>	//     }
1110	>
1111	>	public static class NPETask implements Callable<String> {
1112	>	public String call() { throw new NullPointerException(); }
1113	>	}
1114	>
1115	>	public static class CallableOne implements Callable<Integer> {
1116	>	public Integer call() { return one; }
1117	>	}
1118	>
1119	>	public class ShortRunnable extends CheckedRunnable {
1120	>	protected void realRun() throws Throwable {
1121	>	delay(SHORT_DELAY_MS);
1122	>	}
1123	>	}
1124	>
1125	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1126	>	protected void realRun() throws InterruptedException {
1127	>	delay(SHORT_DELAY_MS);
1128	>	}
1129	>	}
1130	>
1131	>	public class SmallRunnable extends CheckedRunnable {
1132	>	protected void realRun() throws Throwable {
1133	>	delay(SMALL_DELAY_MS);
1134	>	}
1135	>	}
1136	>
1137	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1138	>	protected void realRun() {
1139		try {
1140	<	Thread.sleep(MEDIUM_DELAY_MS);
1141	<	threadShouldThrow();
461	<	}
462	<	catch(InterruptedException success) {
463	<	}
1140	>	delay(SMALL_DELAY_MS);
1141	>	} catch (InterruptedException ok) {}
1142		}
1143		}
1144
1145	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1146	<	public void run() {
1145	>	public class SmallCallable extends CheckedCallable {
1146	>	protected Object realCall() throws InterruptedException {
1147	>	delay(SMALL_DELAY_MS);
1148	>	return Boolean.TRUE;
1149	>	}
1150	>	}
1151	>
1152	>	public class MediumRunnable extends CheckedRunnable {
1153	>	protected void realRun() throws Throwable {
1154	>	delay(MEDIUM_DELAY_MS);
1155	>	}
1156	>	}
1157	>
1158	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1159	>	protected void realRun() throws InterruptedException {
1160	>	delay(MEDIUM_DELAY_MS);
1161	>	}
1162	>	}
1163	>
1164	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1165	>	return new CheckedRunnable() {
1166	>	protected void realRun() {
1167	>	try {
1168	>	delay(timeoutMillis);
1169	>	} catch (InterruptedException ok) {}
1170	>	}};
1171	>	}
1172	>
1173	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1174	>	protected void realRun() {
1175		try {
1176	<	Thread.sleep(MEDIUM_DELAY_MS);
1177	<	}
472	<	catch(InterruptedException success) {
473	<	}
1176	>	delay(MEDIUM_DELAY_MS);
1177	>	} catch (InterruptedException ok) {}
1178		}
1179		}
1180
1181	<	class LongPossiblyInterruptedRunnable implements Runnable {
1182	<	public void run() {
1181	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1182	>	protected void realRun() {
1183		try {
1184	<	Thread.sleep(LONG_DELAY_MS);
1185	<	}
482	<	catch(InterruptedException success) {
483	<	}
1184	>	delay(LONG_DELAY_MS);
1185	>	} catch (InterruptedException ok) {}
1186		}
1187		}
1188
1189		/**
1190		* For use as ThreadFactory in constructors
1191		*/
1192	<	static class SimpleThreadFactory implements ThreadFactory{
1193	<	public Thread newThread(Runnable r){
1192	>	public static class SimpleThreadFactory implements ThreadFactory {
1193	>	public Thread newThread(Runnable r) {
1194		return new Thread(r);
1195	<	}
1195	>	}
1196		}
1197
1198	<	static class TrackedShortRunnable implements Runnable {
1199	<	volatile boolean done = false;
1198	>	public interface TrackedRunnable extends Runnable {
1199	>	boolean isDone();
1200	>	}
1201	>
1202	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1203	>	return new TrackedRunnable() {
1204	>	private volatile boolean done = false;
1205	>	public boolean isDone() { return done; }
1206	>	public void run() {
1207	>	try {
1208	>	delay(timeoutMillis);
1209	>	done = true;
1210	>	} catch (InterruptedException ok) {}
1211	>	}
1212	>	};
1213	>	}
1214	>
1215	>	public static class TrackedShortRunnable implements Runnable {
1216	>	public volatile boolean done = false;
1217		public void run() {
1218		try {
1219	<	Thread.sleep(SMALL_DELAY_MS);
1219	>	delay(SHORT_DELAY_MS);
1220		done = true;
1221	<	} catch(Exception e){
503	<	}
1221	>	} catch (InterruptedException ok) {}
1222		}
1223		}
1224
1225	<	static class TrackedMediumRunnable implements Runnable {
1226	<	volatile boolean done = false;
1225	>	public static class TrackedSmallRunnable implements Runnable {
1226	>	public volatile boolean done = false;
1227		public void run() {
1228		try {
1229	<	Thread.sleep(MEDIUM_DELAY_MS);
1229	>	delay(SMALL_DELAY_MS);
1230		done = true;
1231	<	} catch(Exception e){
514	<	}
1231	>	} catch (InterruptedException ok) {}
1232		}
1233		}
1234
1235	<	static class TrackedLongRunnable implements Runnable {
1236	<	volatile boolean done = false;
1235	>	public static class TrackedMediumRunnable implements Runnable {
1236	>	public volatile boolean done = false;
1237		public void run() {
1238		try {
1239	<	Thread.sleep(LONG_DELAY_MS);
1239	>	delay(MEDIUM_DELAY_MS);
1240		done = true;
1241	<	} catch(Exception e){
1242	<	}
1241	>	} catch (InterruptedException ok) {}
1242	>	}
1243	>	}
1244	>
1245	>	public static class TrackedLongRunnable implements Runnable {
1246	>	public volatile boolean done = false;
1247	>	public void run() {
1248	>	try {
1249	>	delay(LONG_DELAY_MS);
1250	>	done = true;
1251	>	} catch (InterruptedException ok) {}
1252		}
1253		}
1254
1255	<	static class TrackedNoOpRunnable implements Runnable {
1256	<	volatile boolean done = false;
1255	>	public static class TrackedNoOpRunnable implements Runnable {
1256	>	public volatile boolean done = false;
1257		public void run() {
1258		done = true;
1259		}
1260		}
1261
1262	<	static class TrackedCallable implements Callable {
1263	<	volatile boolean done = false;
1262	>	public static class TrackedCallable implements Callable {
1263	>	public volatile boolean done = false;
1264		public Object call() {
1265		try {
1266	<	Thread.sleep(SMALL_DELAY_MS);
1266	>	delay(SMALL_DELAY_MS);
1267		done = true;
1268	<	} catch(Exception e){
543	<	}
1268	>	} catch (InterruptedException ok) {}
1269		return Boolean.TRUE;
1270		}
1271		}
1272
1273	+	/**
1274	+	* Analog of CheckedRunnable for RecursiveAction
1275	+	*/
1276	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1277	+	protected abstract void realCompute() throws Throwable;
1278	+
1279	+	@Override protected final void compute() {
1280	+	try {
1281	+	realCompute();
1282	+	} catch (Throwable t) {
1283	+	threadUnexpectedException(t);
1284	+	}
1285	+	}
1286	+	}
1287	+
1288	+	/**
1289	+	* Analog of CheckedCallable for RecursiveTask
1290	+	*/
1291	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1292	+	protected abstract T realCompute() throws Throwable;
1293	+
1294	+	@Override protected final T compute() {
1295	+	try {
1296	+	return realCompute();
1297	+	} catch (Throwable t) {
1298	+	threadUnexpectedException(t);
1299	+	return null;
1300	+	}
1301	+	}
1302	+	}
1303
1304		/**
1305		* For use as RejectedExecutionHandler in constructors
1306		*/
1307	<	static class NoOpREHandler implements RejectedExecutionHandler{
1308	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1307	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1308	>	public void rejectedExecution(Runnable r,
1309	>	ThreadPoolExecutor executor) {}
1310	>	}
1311	>
1312	>	/**
1313	>	* A CyclicBarrier that uses timed await and fails with
1314	>	* AssertionFailedErrors instead of throwing checked exceptions.
1315	>	*/
1316	>	public class CheckedBarrier extends CyclicBarrier {
1317	>	public CheckedBarrier(int parties) { super(parties); }
1318	>
1319	>	public int await() {
1320	>	try {
1321	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1322	>	} catch (TimeoutException e) {
1323	>	throw new AssertionFailedError("timed out");
1324	>	} catch (Exception e) {
1325	>	AssertionFailedError afe =
1326	>	new AssertionFailedError("Unexpected exception: " + e);
1327	>	afe.initCause(e);
1328	>	throw afe;
1329	>	}
1330	>	}
1331	>	}
1332	>
1333	>	void checkEmpty(BlockingQueue q) {
1334	>	try {
1335	>	assertTrue(q.isEmpty());
1336	>	assertEquals(0, q.size());
1337	>	assertNull(q.peek());
1338	>	assertNull(q.poll());
1339	>	assertNull(q.poll(0, MILLISECONDS));
1340	>	assertEquals(q.toString(), "[]");
1341	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1342	>	assertFalse(q.iterator().hasNext());
1343	>	try {
1344	>	q.element();
1345	>	shouldThrow();
1346	>	} catch (NoSuchElementException success) {}
1347	>	try {
1348	>	q.iterator().next();
1349	>	shouldThrow();
1350	>	} catch (NoSuchElementException success) {}
1351	>	try {
1352	>	q.remove();
1353	>	shouldThrow();
1354	>	} catch (NoSuchElementException success) {}
1355	>	} catch (InterruptedException ie) {
1356	>	threadUnexpectedException(ie);
1357	>	}
1358	>	}
1359	>
1360	>	void assertSerialEquals(Object x, Object y) {
1361	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1362	>	}
1363	>
1364	>	void assertNotSerialEquals(Object x, Object y) {
1365	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1366	>	}
1367	>
1368	>	byte[] serialBytes(Object o) {
1369	>	try {
1370	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1371	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1372	>	oos.writeObject(o);
1373	>	oos.flush();
1374	>	oos.close();
1375	>	return bos.toByteArray();
1376	>	} catch (Throwable t) {
1377	>	threadUnexpectedException(t);
1378	>	return new byte[0];
1379	>	}
1380	>	}
1381	>
1382	>	@SuppressWarnings("unchecked")
1383	>	<T> T serialClone(T o) {
1384	>	try {
1385	>	ObjectInputStream ois = new ObjectInputStream
1386	>	(new ByteArrayInputStream(serialBytes(o)));
1387	>	T clone = (T) ois.readObject();
1388	>	assertSame(o.getClass(), clone.getClass());
1389	>	return clone;
1390	>	} catch (Throwable t) {
1391	>	threadUnexpectedException(t);
1392	>	return null;
1393	>	}
1394	>	}
1395	>
1396	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1397	>	Runnable... throwingActions) {
1398	>	for (Runnable throwingAction : throwingActions) {
1399	>	boolean threw = false;
1400	>	try { throwingAction.run(); }
1401	>	catch (Throwable t) {
1402	>	threw = true;
1403	>	if (!expectedExceptionClass.isInstance(t)) {
1404	>	AssertionFailedError afe =
1405	>	new AssertionFailedError
1406	>	("Expected " + expectedExceptionClass.getName() +
1407	>	", got " + t.getClass().getName());
1408	>	afe.initCause(t);
1409	>	threadUnexpectedException(afe);
1410	>	}
1411	>	}
1412	>	if (!threw)
1413	>	shouldThrow(expectedExceptionClass.getName());
1414	>	}
1415		}
555	–
556	–
1416		}

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