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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.14 by dl, Sun Dec 28 21:56:18 2003 UTC vs.
Revision 1.110 by jsr166, Sun Jul 14 22:39:31 2013 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.security.CodeSource;
30	>	import java.security.Permission;
31	>	import java.security.PermissionCollection;
32	>	import java.security.Permissions;
33	>	import java.security.Policy;
34	>	import java.security.ProtectionDomain;
35	>	import java.security.SecurityPermission;
36
37		/**
38		* Base class for JSR166 Junit TCK tests.  Defines some constants,
39		* utility methods and classes, as well as a simple framework for
40		* helping to make sure that assertions failing in generated threads
41		* cause the associated test that generated them to itself fail (which
42	<	* JUnit doe not otherwise arrange).  The rules for creating such
42	>	* JUnit does not otherwise arrange).  The rules for creating such
43		* tests are:
44		*
45		* <ol>
46		*
47		* <li> All assertions in code running in generated threads must use
48	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
49	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
50	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
48	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
49	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
50	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
51		* particularly recommended) for other code to use these forms too.
52		* Only the most typically used JUnit assertion methods are defined
53		* this way, but enough to live with.</li>
54		*
55	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
56	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
55	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
56	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
57		* them. These methods are used to clear and check for thread
58		* assertion failures.</li>
59		*
60	<	* <li>All delays and timeouts must use one of the constants <tt>
61	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
62	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
60	>	* <li>All delays and timeouts must use one of the constants {@code
61	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
62	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
63		* discriminable from zero time, and always allows enough time for the
64		* small amounts of computation (creating a thread, calling a few
65		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
66		* is always discriminable as larger than SHORT and smaller than
67		* MEDIUM.  And so on. These constants are set to conservative values,
68		* but even so, if there is ever any doubt, they can all be increased
69	<	* in one spot to rerun tests on slower platforms</li>
69	>	* in one spot to rerun tests on slower platforms.</li>
70		*
71		* <li> All threads generated must be joined inside each test case
72	<	* method (or <tt>fail</tt> to do so) before returning from the
73	<	* method. The <tt> joinPool</tt> method can be used to do this when
72	>	* method (or {@code fail} to do so) before returning from the
73	>	* method. The {@code joinPool} method can be used to do this when
74		* using Executors.</li>
75		*
76		* </ol>
77		*
78	<	* <p> <b>Other notes</b>
78	>	* <p><b>Other notes</b>
79		* <ul>
80		*
81		* <li> Usually, there is one testcase method per JSR166 method
#	Line 63 | Line 85 | import java.security.*;
85		* "normal" behaviors differ significantly. And sometimes testcases
86		* cover multiple methods when they cannot be tested in
87		* isolation.</li>
88	<	*
88	>	*
89		* <li> The documentation style for testcases is to provide as javadoc
90		* a simple sentence or two describing the property that the testcase
91		* method purports to test. The javadocs do not say anything about how
#	Line 80 | Line 102 | import java.security.*;
102		* any particular package to simplify things for people integrating
103		* them in TCK test suites.</li>
104		*
105	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
105	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
106		* runs all JSR166 unit tests.</li>
107		*
108		* </ul>
109		*/
110		public class JSR166TestCase extends TestCase {
111	+	private static final boolean useSecurityManager =
112	+	Boolean.getBoolean("jsr166.useSecurityManager");
113	+
114	+	protected static final boolean expensiveTests =
115	+	Boolean.getBoolean("jsr166.expensiveTests");
116	+
117	+	/**
118	+	* If true, report on stdout all "slow" tests, that is, ones that
119	+	* take more than profileThreshold milliseconds to execute.
120	+	*/
121	+	private static final boolean profileTests =
122	+	Boolean.getBoolean("jsr166.profileTests");
123	+
124	+	/**
125	+	* The number of milliseconds that tests are permitted for
126	+	* execution without being reported, when profileTests is set.
127	+	*/
128	+	private static final long profileThreshold =
129	+	Long.getLong("jsr166.profileThreshold", 100);
130	+
131	+	/**
132	+	* The number of repetitions per test (for tickling rare bugs).
133	+	*/
134	+	private static final int runsPerTest =
135	+	Integer.getInteger("jsr166.runsPerTest", 1);
136	+
137	+	protected void runTest() throws Throwable {
138	+	for (int i = 0; i < runsPerTest; i++) {
139	+	if (profileTests)
140	+	runTestProfiled();
141	+	else
142	+	super.runTest();
143	+	}
144	+	}
145	+
146	+	protected void runTestProfiled() throws Throwable {
147	+	long t0 = System.nanoTime();
148	+	try {
149	+	super.runTest();
150	+	} finally {
151	+	long elapsedMillis =
152	+	(System.nanoTime() - t0) / (1000L * 1000L);
153	+	if (elapsedMillis >= profileThreshold)
154	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
155	+	}
156	+	}
157	+
158		/**
159	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
160	<	*/
161	<	public static void main (String[] args) {
162	<	junit.textui.TestRunner.run (suite());
159	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
160	>	* Optional command line arg provides the number of iterations to
161	>	* repeat running the tests.
162	>	*/
163	>	public static void main(String[] args) {
164	>	if (useSecurityManager) {
165	>	System.err.println("Setting a permissive security manager");
166	>	Policy.setPolicy(permissivePolicy());
167	>	System.setSecurityManager(new SecurityManager());
168	>	}
169	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
170	>
171	>	Test s = suite();
172	>	for (int i = 0; i < iters; ++i) {
173	>	junit.textui.TestRunner.run(s);
174	>	System.gc();
175	>	System.runFinalization();
176	>	}
177	>	System.exit(0);
178	>	}
179	>
180	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
181	>	TestSuite suite = new TestSuite();
182	>	for (Object suiteOrClass : suiteOrClasses) {
183	>	if (suiteOrClass instanceof TestSuite)
184	>	suite.addTest((TestSuite) suiteOrClass);
185	>	else if (suiteOrClass instanceof Class)
186	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
187	>	else
188	>	throw new ClassCastException("not a test suite or class");
189	>	}
190	>	return suite;
191	>	}
192	>
193	>	public static void addNamedTestClasses(TestSuite suite,
194	>	String... testClassNames) {
195	>	for (String testClassName : testClassNames) {
196	>	try {
197	>	Class<?> testClass = Class.forName(testClassName);
198	>	Method m = testClass.getDeclaredMethod("suite",
199	>	new Class<?>[0]);
200	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
201	>	} catch (Exception e) {
202	>	throw new Error("Missing test class", e);
203	>	}
204	>	}
205	>	}
206	>
207	>	public static final double JAVA_CLASS_VERSION;
208	>	static {
209	>	try {
210	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
211	>	new java.security.PrivilegedAction<Double>() {
212	>	public Double run() {
213	>	return Double.valueOf(System.getProperty("java.class.version"));}});
214	>	} catch (Throwable t) {
215	>	throw new Error(t);
216	>	}
217		}
218
219	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
220	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
221	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
222	+
223		/**
224	<	* Collects all JSR166 unit tests as one suite
225	<	*/
226	<	public static Test suite ( ) {
227	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
228	<
229	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
230	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
231	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
232	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
233	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
234	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
235	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
236	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
237	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
238	<	suite.addTest(new TestSuite(AtomicLongTest.class));
239	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
240	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
241	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
242	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
243	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
244	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
245	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
246	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
247	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
248	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
249	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
250	<	suite.addTest(new TestSuite(DelayQueueTest.class));
251	<	suite.addTest(new TestSuite(ExchangerTest.class));
252	<	suite.addTest(new TestSuite(ExecutorsTest.class));
253	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
254	<	suite.addTest(new TestSuite(FutureTaskTest.class));
255	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
256	<	suite.addTest(new TestSuite(LinkedListTest.class));
257	<	suite.addTest(new TestSuite(LockSupportTest.class));
258	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
259	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
260	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
261	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
262	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
263	<	suite.addTest(new TestSuite(SemaphoreTest.class));
264	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
265	<	suite.addTest(new TestSuite(SystemTest.class));
266	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
267	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
268	<	suite.addTest(new TestSuite(ThreadTest.class));
269	<	suite.addTest(new TestSuite(TimeUnitTest.class));
270	<
224	>	* Collects all JSR166 unit tests as one suite.
225	>	*/
226	>	public static Test suite() {
227	>	// Java7+ test classes
228	>	TestSuite suite = newTestSuite(
229	>	ForkJoinPoolTest.suite(),
230	>	ForkJoinTaskTest.suite(),
231	>	RecursiveActionTest.suite(),
232	>	RecursiveTaskTest.suite(),
233	>	LinkedTransferQueueTest.suite(),
234	>	PhaserTest.suite(),
235	>	ThreadLocalRandomTest.suite(),
236	>	AbstractExecutorServiceTest.suite(),
237	>	AbstractQueueTest.suite(),
238	>	AbstractQueuedSynchronizerTest.suite(),
239	>	AbstractQueuedLongSynchronizerTest.suite(),
240	>	ArrayBlockingQueueTest.suite(),
241	>	ArrayDequeTest.suite(),
242	>	AtomicBooleanTest.suite(),
243	>	AtomicIntegerArrayTest.suite(),
244	>	AtomicIntegerFieldUpdaterTest.suite(),
245	>	AtomicIntegerTest.suite(),
246	>	AtomicLongArrayTest.suite(),
247	>	AtomicLongFieldUpdaterTest.suite(),
248	>	AtomicLongTest.suite(),
249	>	AtomicMarkableReferenceTest.suite(),
250	>	AtomicReferenceArrayTest.suite(),
251	>	AtomicReferenceFieldUpdaterTest.suite(),
252	>	AtomicReferenceTest.suite(),
253	>	AtomicStampedReferenceTest.suite(),
254	>	ConcurrentHashMapTest.suite(),
255	>	ConcurrentLinkedDequeTest.suite(),
256	>	ConcurrentLinkedQueueTest.suite(),
257	>	ConcurrentSkipListMapTest.suite(),
258	>	ConcurrentSkipListSubMapTest.suite(),
259	>	ConcurrentSkipListSetTest.suite(),
260	>	ConcurrentSkipListSubSetTest.suite(),
261	>	CopyOnWriteArrayListTest.suite(),
262	>	CopyOnWriteArraySetTest.suite(),
263	>	CountDownLatchTest.suite(),
264	>	CyclicBarrierTest.suite(),
265	>	DelayQueueTest.suite(),
266	>	EntryTest.suite(),
267	>	ExchangerTest.suite(),
268	>	ExecutorsTest.suite(),
269	>	ExecutorCompletionServiceTest.suite(),
270	>	FutureTaskTest.suite(),
271	>	LinkedBlockingDequeTest.suite(),
272	>	LinkedBlockingQueueTest.suite(),
273	>	LinkedListTest.suite(),
274	>	LockSupportTest.suite(),
275	>	PriorityBlockingQueueTest.suite(),
276	>	PriorityQueueTest.suite(),
277	>	ReentrantLockTest.suite(),
278	>	ReentrantReadWriteLockTest.suite(),
279	>	ScheduledExecutorTest.suite(),
280	>	ScheduledExecutorSubclassTest.suite(),
281	>	SemaphoreTest.suite(),
282	>	SynchronousQueueTest.suite(),
283	>	SystemTest.suite(),
284	>	ThreadLocalTest.suite(),
285	>	ThreadPoolExecutorTest.suite(),
286	>	ThreadPoolExecutorSubclassTest.suite(),
287	>	ThreadTest.suite(),
288	>	TimeUnitTest.suite(),
289	>	TreeMapTest.suite(),
290	>	TreeSetTest.suite(),
291	>	TreeSubMapTest.suite(),
292	>	TreeSubSetTest.suite());
293	>
294	>	// Java8+ test classes
295	>	if (atLeastJava8()) {
296	>	String[] java8TestClassNames = {
297	>	"CompletableFutureTest",
298	>	"ConcurrentHashMap8Test",
299	>	"CountedCompleterTest",
300	>	"DoubleAccumulatorTest",
301	>	"DoubleAdderTest",
302	>	"ForkJoinPool8Test",
303	>	"LongAccumulatorTest",
304	>	"LongAdderTest",
305	>	"SplittableRandomTest",
306	>	"StampedLockTest",
307	>	};
308	>	addNamedTestClasses(suite, java8TestClassNames);
309	>	}
310	>
311		return suite;
312		}
313
314	+	// Delays for timing-dependent tests, in milliseconds.
315
316		public static long SHORT_DELAY_MS;
317		public static long SMALL_DELAY_MS;
318		public static long MEDIUM_DELAY_MS;
319		public static long LONG_DELAY_MS;
320
153	–
321		/**
322	<	* Return the shortest timed delay. This could
323	<	* be reimplmented to use for example a Property.
324	<	*/
322	>	* Returns the shortest timed delay. This could
323	>	* be reimplemented to use for example a Property.
324	>	*/
325		protected long getShortDelay() {
326	<	return 100;
326	>	return 50;
327		}
328
162	–
329		/**
330	<	* Set delays as multiples of SHORT_DELAY.
330	>	* Sets delays as multiples of SHORT_DELAY.
331		*/
332	<	protected  void setDelays() {
332	>	protected void setDelays() {
333		SHORT_DELAY_MS = getShortDelay();
334	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
334	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
335		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
336	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
336	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
337	>	}
338	>
339	>	/**
340	>	* Returns a timeout in milliseconds to be used in tests that
341	>	* verify that operations block or time out.
342	>	*/
343	>	long timeoutMillis() {
344	>	return SHORT_DELAY_MS / 4;
345	>	}
346	>
347	>	/**
348	>	* Returns a new Date instance representing a time delayMillis
349	>	* milliseconds in the future.
350	>	*/
351	>	Date delayedDate(long delayMillis) {
352	>	return new Date(System.currentTimeMillis() + delayMillis);
353		}
354
355		/**
356	<	* Flag set true if any threadAssert methods fail
356	>	* The first exception encountered if any threadAssertXXX method fails.
357		*/
358	<	volatile boolean threadFailed;
358	>	private final AtomicReference<Throwable> threadFailure
359	>	= new AtomicReference<Throwable>(null);
360
361		/**
362	<	* Initialize test to indicate that no thread assertions have failed
362	>	* Records an exception so that it can be rethrown later in the test
363	>	* harness thread, triggering a test case failure.  Only the first
364	>	* failure is recorded; subsequent calls to this method from within
365	>	* the same test have no effect.
366		*/
367	<	public void setUp() {
367	>	public void threadRecordFailure(Throwable t) {
368	>	threadFailure.compareAndSet(null, t);
369	>	}
370	>
371	>	public void setUp() {
372		setDelays();
183	–	threadFailed = false;
373		}
374
375		/**
376	<	* Trigger test case failure if any thread assertions have failed
376	>	* Extra checks that get done for all test cases.
377	>	*
378	>	* Triggers test case failure if any thread assertions have failed,
379	>	* by rethrowing, in the test harness thread, any exception recorded
380	>	* earlier by threadRecordFailure.
381	>	*
382	>	* Triggers test case failure if interrupt status is set in the main thread.
383	>	*/
384	>	public void tearDown() throws Exception {
385	>	Throwable t = threadFailure.getAndSet(null);
386	>	if (t != null) {
387	>	if (t instanceof Error)
388	>	throw (Error) t;
389	>	else if (t instanceof RuntimeException)
390	>	throw (RuntimeException) t;
391	>	else if (t instanceof Exception)
392	>	throw (Exception) t;
393	>	else {
394	>	AssertionFailedError afe =
395	>	new AssertionFailedError(t.toString());
396	>	afe.initCause(t);
397	>	throw afe;
398	>	}
399	>	}
400	>
401	>	if (Thread.interrupted())
402	>	throw new AssertionFailedError("interrupt status set in main thread");
403	>
404	>	checkForkJoinPoolThreadLeaks();
405	>	}
406	>
407	>	/**
408	>	* Find missing try { ... } finally { joinPool(e); }
409		*/
410	<	public void tearDown() {
411	<	assertFalse(threadFailed);
410	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
411	>	Thread[] survivors = new Thread[5];
412	>	int count = Thread.enumerate(survivors);
413	>	for (int i = 0; i < count; i++) {
414	>	Thread thread = survivors[i];
415	>	String name = thread.getName();
416	>	if (name.startsWith("ForkJoinPool-")) {
417	>	// give thread some time to terminate
418	>	thread.join(LONG_DELAY_MS);
419	>	if (!thread.isAlive()) continue;
420	>	thread.stop();
421	>	throw new AssertionFailedError
422	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
423	>	toString(), name));
424	>	}
425	>	}
426		}
427
428		/**
429	<	* Fail, also setting status to indicate current testcase should fail
430	<	*/
429	>	* Just like fail(reason), but additionally recording (using
430	>	* threadRecordFailure) any AssertionFailedError thrown, so that
431	>	* the current testcase will fail.
432	>	*/
433		public void threadFail(String reason) {
434	<	threadFailed = true;
435	<	fail(reason);
434	>	try {
435	>	fail(reason);
436	>	} catch (AssertionFailedError t) {
437	>	threadRecordFailure(t);
438	>	fail(reason);
439	>	}
440		}
441
442		/**
443	<	* If expression not true, set status to indicate current testcase
444	<	* should fail
445	<	*/
443	>	* Just like assertTrue(b), but additionally recording (using
444	>	* threadRecordFailure) any AssertionFailedError thrown, so that
445	>	* the current testcase will fail.
446	>	*/
447		public void threadAssertTrue(boolean b) {
448	<	if (!b) {
207	<	threadFailed = true;
448	>	try {
449		assertTrue(b);
450	+	} catch (AssertionFailedError t) {
451	+	threadRecordFailure(t);
452	+	throw t;
453		}
454		}
455
456		/**
457	<	* If expression not false, set status to indicate current testcase
458	<	* should fail
459	<	*/
457	>	* Just like assertFalse(b), but additionally recording (using
458	>	* threadRecordFailure) any AssertionFailedError thrown, so that
459	>	* the current testcase will fail.
460	>	*/
461		public void threadAssertFalse(boolean b) {
462	<	if (b) {
218	<	threadFailed = true;
462	>	try {
463		assertFalse(b);
464	+	} catch (AssertionFailedError t) {
465	+	threadRecordFailure(t);
466	+	throw t;
467		}
468		}
469
470		/**
471	<	* If argument not null, set status to indicate current testcase
472	<	* should fail
473	<	*/
471	>	* Just like assertNull(x), but additionally recording (using
472	>	* threadRecordFailure) any AssertionFailedError thrown, so that
473	>	* the current testcase will fail.
474	>	*/
475		public void threadAssertNull(Object x) {
476	<	if (x != null) {
229	<	threadFailed = true;
476	>	try {
477		assertNull(x);
478	+	} catch (AssertionFailedError t) {
479	+	threadRecordFailure(t);
480	+	throw t;
481		}
482		}
483
484		/**
485	<	* If arguments not equal, set status to indicate current testcase
486	<	* should fail
487	<	*/
485	>	* Just like assertEquals(x, y), but additionally recording (using
486	>	* threadRecordFailure) any AssertionFailedError thrown, so that
487	>	* the current testcase will fail.
488	>	*/
489		public void threadAssertEquals(long x, long y) {
490	<	if (x != y) {
240	<	threadFailed = true;
490	>	try {
491		assertEquals(x, y);
492	+	} catch (AssertionFailedError t) {
493	+	threadRecordFailure(t);
494	+	throw t;
495		}
496		}
497
498		/**
499	<	* If arguments not equal, set status to indicate current testcase
500	<	* should fail
501	<	*/
499	>	* Just like assertEquals(x, y), but additionally recording (using
500	>	* threadRecordFailure) any AssertionFailedError thrown, so that
501	>	* the current testcase will fail.
502	>	*/
503		public void threadAssertEquals(Object x, Object y) {
504	<	if (x != y && (x == null || !x.equals(y))) {
251	<	threadFailed = true;
504	>	try {
505		assertEquals(x, y);
506	+	} catch (AssertionFailedError t) {
507	+	threadRecordFailure(t);
508	+	throw t;
509	+	} catch (Throwable t) {
510	+	threadUnexpectedException(t);
511	+	}
512	+	}
513	+
514	+	/**
515	+	* Just like assertSame(x, y), but additionally recording (using
516	+	* threadRecordFailure) any AssertionFailedError thrown, so that
517	+	* the current testcase will fail.
518	+	*/
519	+	public void threadAssertSame(Object x, Object y) {
520	+	try {
521	+	assertSame(x, y);
522	+	} catch (AssertionFailedError t) {
523	+	threadRecordFailure(t);
524	+	throw t;
525		}
526		}
527
528		/**
529	<	* threadFail with message "should throw exception"
530	<	*/
529	>	* Calls threadFail with message "should throw exception".
530	>	*/
531		public void threadShouldThrow() {
532	<	threadFailed = true;
261	<	fail("should throw exception");
532	>	threadFail("should throw exception");
533		}
534
535		/**
536	<	* threadFail with message "Unexpected exception"
536	>	* Calls threadFail with message "should throw" + exceptionName.
537		*/
538	<	public void threadUnexpectedException() {
539	<	threadFailed = true;
269	<	fail("Unexpected exception");
538	>	public void threadShouldThrow(String exceptionName) {
539	>	threadFail("should throw " + exceptionName);
540		}
541
542	+	/**
543	+	* Records the given exception using {@link #threadRecordFailure},
544	+	* then rethrows the exception, wrapping it in an
545	+	* AssertionFailedError if necessary.
546	+	*/
547	+	public void threadUnexpectedException(Throwable t) {
548	+	threadRecordFailure(t);
549	+	t.printStackTrace();
550	+	if (t instanceof RuntimeException)
551	+	throw (RuntimeException) t;
552	+	else if (t instanceof Error)
553	+	throw (Error) t;
554	+	else {
555	+	AssertionFailedError afe =
556	+	new AssertionFailedError("unexpected exception: " + t);
557	+	afe.initCause(t);
558	+	throw afe;
559	+	}
560	+	}
561	+
562	+	/**
563	+	* Delays, via Thread.sleep, for the given millisecond delay, but
564	+	* if the sleep is shorter than specified, may re-sleep or yield
565	+	* until time elapses.
566	+	*/
567	+	static void delay(long millis) throws InterruptedException {
568	+	long startTime = System.nanoTime();
569	+	long ns = millis * 1000 * 1000;
570	+	for (;;) {
571	+	if (millis > 0L)
572	+	Thread.sleep(millis);
573	+	else // too short to sleep
574	+	Thread.yield();
575	+	long d = ns - (System.nanoTime() - startTime);
576	+	if (d > 0L)
577	+	millis = d / (1000 * 1000);
578	+	else
579	+	break;
580	+	}
581	+	}
582
583		/**
584	<	* Wait out termination of a thread pool or fail doing so
584	>	* Waits out termination of a thread pool or fails doing so.
585		*/
586	<	public void joinPool(ExecutorService exec) {
586	>	void joinPool(ExecutorService exec) {
587		try {
588		exec.shutdown();
589	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
590	<	} catch(InterruptedException ie) {
591	<	fail("Unexpected exception");
589	>	assertTrue("ExecutorService did not terminate in a timely manner",
590	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
591	>	} catch (SecurityException ok) {
592	>	// Allowed in case test doesn't have privs
593	>	} catch (InterruptedException ie) {
594	>	fail("Unexpected InterruptedException");
595	>	}
596	>	}
597	>
598	>	/**
599	>	* A debugging tool to print all stack traces, as jstack does.
600	>	*/
601	>	static void printAllStackTraces() {
602	>	for (ThreadInfo info :
603	>	ManagementFactory.getThreadMXBean()
604	>	.dumpAllThreads(true, true))
605	>	System.err.print(info);
606	>	}
607	>
608	>	/**
609	>	* Checks that thread does not terminate within the default
610	>	* millisecond delay of {@code timeoutMillis()}.
611	>	*/
612	>	void assertThreadStaysAlive(Thread thread) {
613	>	assertThreadStaysAlive(thread, timeoutMillis());
614	>	}
615	>
616	>	/**
617	>	* Checks that thread does not terminate within the given millisecond delay.
618	>	*/
619	>	void assertThreadStaysAlive(Thread thread, long millis) {
620	>	try {
621	>	// No need to optimize the failing case via Thread.join.
622	>	delay(millis);
623	>	assertTrue(thread.isAlive());
624	>	} catch (InterruptedException ie) {
625	>	fail("Unexpected InterruptedException");
626	>	}
627	>	}
628	>
629	>	/**
630	>	* Checks that the threads do not terminate within the default
631	>	* millisecond delay of {@code timeoutMillis()}.
632	>	*/
633	>	void assertThreadsStayAlive(Thread... threads) {
634	>	assertThreadsStayAlive(timeoutMillis(), threads);
635	>	}
636	>
637	>	/**
638	>	* Checks that the threads do not terminate within the given millisecond delay.
639	>	*/
640	>	void assertThreadsStayAlive(long millis, Thread... threads) {
641	>	try {
642	>	// No need to optimize the failing case via Thread.join.
643	>	delay(millis);
644	>	for (Thread thread : threads)
645	>	assertTrue(thread.isAlive());
646	>	} catch (InterruptedException ie) {
647	>	fail("Unexpected InterruptedException");
648		}
649		}
650
651	+	/**
652	+	* Checks that future.get times out, with the default timeout of
653	+	* {@code timeoutMillis()}.
654	+	*/
655	+	void assertFutureTimesOut(Future future) {
656	+	assertFutureTimesOut(future, timeoutMillis());
657	+	}
658	+
659	+	/**
660	+	* Checks that future.get times out, with the given millisecond timeout.
661	+	*/
662	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
663	+	long startTime = System.nanoTime();
664	+	try {
665	+	future.get(timeoutMillis, MILLISECONDS);
666	+	shouldThrow();
667	+	} catch (TimeoutException success) {
668	+	} catch (Exception e) {
669	+	threadUnexpectedException(e);
670	+	} finally { future.cancel(true); }
671	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
672	+	}
673
674		/**
675	<	* fail with message "should throw exception"
676	<	*/
675	>	* Fails with message "should throw exception".
676	>	*/
677		public void shouldThrow() {
678		fail("Should throw exception");
679		}
680
681		/**
682	<	* fail with message "Unexpected exception"
682	>	* Fails with message "should throw " + exceptionName.
683		*/
684	<	public void unexpectedException() {
685	<	fail("Unexpected exception");
684	>	public void shouldThrow(String exceptionName) {
685	>	fail("Should throw " + exceptionName);
686		}
687
300	–
688		/**
689		* The number of elements to place in collections, arrays, etc.
690		*/
691	<	static final int SIZE = 20;
691	>	public static final int SIZE = 20;
692
693		// Some convenient Integer constants
694
695	<	static final Integer zero = new Integer(0);
696	<	static final Integer one = new Integer(1);
697	<	static final Integer two = new Integer(2);
698	<	static final Integer three  = new Integer(3);
699	<	static final Integer four  = new Integer(4);
700	<	static final Integer five  = new Integer(5);
701	<	static final Integer six = new Integer(6);
702	<	static final Integer seven = new Integer(7);
703	<	static final Integer eight = new Integer(8);
704	<	static final Integer nine = new Integer(9);
705	<	static final Integer m1  = new Integer(-1);
706	<	static final Integer m2  = new Integer(-2);
707	<	static final Integer m3  = new Integer(-3);
708	<	static final Integer m4 = new Integer(-4);
709	<	static final Integer m5 = new Integer(-5);
710	<	static final Integer m10 = new Integer(-10);
695	>	public static final Integer zero  = new Integer(0);
696	>	public static final Integer one   = new Integer(1);
697	>	public static final Integer two   = new Integer(2);
698	>	public static final Integer three = new Integer(3);
699	>	public static final Integer four  = new Integer(4);
700	>	public static final Integer five  = new Integer(5);
701	>	public static final Integer six   = new Integer(6);
702	>	public static final Integer seven = new Integer(7);
703	>	public static final Integer eight = new Integer(8);
704	>	public static final Integer nine  = new Integer(9);
705	>	public static final Integer m1  = new Integer(-1);
706	>	public static final Integer m2  = new Integer(-2);
707	>	public static final Integer m3  = new Integer(-3);
708	>	public static final Integer m4  = new Integer(-4);
709	>	public static final Integer m5  = new Integer(-5);
710	>	public static final Integer m6  = new Integer(-6);
711	>	public static final Integer m10 = new Integer(-10);
712	>
713	>	/**
714	>	* Runs Runnable r with a security policy that permits precisely
715	>	* the specified permissions.  If there is no current security
716	>	* manager, the runnable is run twice, both with and without a
717	>	* security manager.  We require that any security manager permit
718	>	* getPolicy/setPolicy.
719	>	*/
720	>	public void runWithPermissions(Runnable r, Permission... permissions) {
721	>	SecurityManager sm = System.getSecurityManager();
722	>	if (sm == null) {
723	>	r.run();
724	>	}
725	>	runWithSecurityManagerWithPermissions(r, permissions);
726	>	}
727	>
728	>	/**
729	>	* Runs Runnable r with a security policy that permits precisely
730	>	* the specified permissions.  If there is no current security
731	>	* manager, a temporary one is set for the duration of the
732	>	* Runnable.  We require that any security manager permit
733	>	* getPolicy/setPolicy.
734	>	*/
735	>	public void runWithSecurityManagerWithPermissions(Runnable r,
736	>	Permission... permissions) {
737	>	SecurityManager sm = System.getSecurityManager();
738	>	if (sm == null) {
739	>	Policy savedPolicy = Policy.getPolicy();
740	>	try {
741	>	Policy.setPolicy(permissivePolicy());
742	>	System.setSecurityManager(new SecurityManager());
743	>	runWithSecurityManagerWithPermissions(r, permissions);
744	>	} finally {
745	>	System.setSecurityManager(null);
746	>	Policy.setPolicy(savedPolicy);
747	>	}
748	>	} else {
749	>	Policy savedPolicy = Policy.getPolicy();
750	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
751	>	Policy.setPolicy(policy);
752	>
753	>	try {
754	>	r.run();
755	>	} finally {
756	>	policy.addPermission(new SecurityPermission("setPolicy"));
757	>	Policy.setPolicy(savedPolicy);
758	>	}
759	>	}
760	>	}
761
762	+	/**
763	+	* Runs a runnable without any permissions.
764	+	*/
765	+	public void runWithoutPermissions(Runnable r) {
766	+	runWithPermissions(r);
767	+	}
768
769		/**
770		* A security policy where new permissions can be dynamically added
771		* or all cleared.
772		*/
773	<	static class AdjustablePolicy extends java.security.Policy {
773	>	public static class AdjustablePolicy extends java.security.Policy {
774		Permissions perms = new Permissions();
775	<	AdjustablePolicy() { }
775	>	AdjustablePolicy(Permission... permissions) {
776	>	for (Permission permission : permissions)
777	>	perms.add(permission);
778	>	}
779		void addPermission(Permission perm) { perms.add(perm); }
780		void clearPermissions() { perms = new Permissions(); }
781	<	public PermissionCollection getPermissions(CodeSource cs) {
782	<	return perms;
783	<	}
784	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
785	<	return perms;
786	<	}
787	<	public boolean implies(ProtectionDomain pd, Permission p) {
788	<	return perms.implies(p);
789	<	}
790	<	public void refresh() {}
781	>	public PermissionCollection getPermissions(CodeSource cs) {
782	>	return perms;
783	>	}
784	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
785	>	return perms;
786	>	}
787	>	public boolean implies(ProtectionDomain pd, Permission p) {
788	>	return perms.implies(p);
789	>	}
790	>	public void refresh() {}
791	>	public String toString() {
792	>	List<Permission> ps = new ArrayList<Permission>();
793	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
794	>	ps.add(e.nextElement());
795	>	return "AdjustablePolicy with permissions " + ps;
796	>	}
797		}
798
799	+	/**
800	+	* Returns a policy containing all the permissions we ever need.
801	+	*/
802	+	public static Policy permissivePolicy() {
803	+	return new AdjustablePolicy
804	+	// Permissions j.u.c. needs directly
805	+	(new RuntimePermission("modifyThread"),
806	+	new RuntimePermission("getClassLoader"),
807	+	new RuntimePermission("setContextClassLoader"),
808	+	// Permissions needed to change permissions!
809	+	new SecurityPermission("getPolicy"),
810	+	new SecurityPermission("setPolicy"),
811	+	new RuntimePermission("setSecurityManager"),
812	+	// Permissions needed by the junit test harness
813	+	new RuntimePermission("accessDeclaredMembers"),
814	+	new PropertyPermission("*", "read"),
815	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
816	+	}
817
818	<	// Some convenient Runnable classes
818	>	/**
819	>	* Sleeps until the given time has elapsed.
820	>	* Throws AssertionFailedError if interrupted.
821	>	*/
822	>	void sleep(long millis) {
823	>	try {
824	>	delay(millis);
825	>	} catch (InterruptedException ie) {
826	>	AssertionFailedError afe =
827	>	new AssertionFailedError("Unexpected InterruptedException");
828	>	afe.initCause(ie);
829	>	throw afe;
830	>	}
831	>	}
832
833	<	static class NoOpRunnable implements Runnable {
834	<	public void run() {}
833	>	/**
834	>	* Spin-waits up to the specified number of milliseconds for the given
835	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
836	>	*/
837	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
838	>	long startTime = System.nanoTime();
839	>	for (;;) {
840	>	Thread.State s = thread.getState();
841	>	if (s == Thread.State.BLOCKED ||
842	>	s == Thread.State.WAITING ||
843	>	s == Thread.State.TIMED_WAITING)
844	>	return;
845	>	else if (s == Thread.State.TERMINATED)
846	>	fail("Unexpected thread termination");
847	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
848	>	threadAssertTrue(thread.isAlive());
849	>	return;
850	>	}
851	>	Thread.yield();
852	>	}
853		}
854
855	<	static class NoOpCallable implements Callable {
856	<	public Object call() { return Boolean.TRUE; }
855	>	/**
856	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
857	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
858	>	*/
859	>	void waitForThreadToEnterWaitState(Thread thread) {
860	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
861		}
862
863	<	static final String TEST_STRING = "a test string";
863	>	/**
864	>	* Returns the number of milliseconds since time given by
865	>	* startNanoTime, which must have been previously returned from a
866	>	* call to {@link System.nanoTime()}.
867	>	*/
868	>	long millisElapsedSince(long startNanoTime) {
869	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
870	>	}
871
872	<	static class StringTask implements Callable<String> {
873	<	public String call() { return TEST_STRING; }
872	>	/**
873	>	* Returns a new started daemon Thread running the given runnable.
874	>	*/
875	>	Thread newStartedThread(Runnable runnable) {
876	>	Thread t = new Thread(runnable);
877	>	t.setDaemon(true);
878	>	t.start();
879	>	return t;
880		}
881
882	<	static class NPETask implements Callable<String> {
883	<	public String call() { throw new NullPointerException(); }
882	>	/**
883	>	* Waits for the specified time (in milliseconds) for the thread
884	>	* to terminate (using {@link Thread#join(long)}), else interrupts
885	>	* the thread (in the hope that it may terminate later) and fails.
886	>	*/
887	>	void awaitTermination(Thread t, long timeoutMillis) {
888	>	try {
889	>	t.join(timeoutMillis);
890	>	} catch (InterruptedException ie) {
891	>	threadUnexpectedException(ie);
892	>	} finally {
893	>	if (t.getState() != Thread.State.TERMINATED) {
894	>	t.interrupt();
895	>	fail("Test timed out");
896	>	}
897	>	}
898		}
899
900	<	static class CallableOne implements Callable<Integer> {
901	<	public Integer call() { return one; }
900	>	/**
901	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
902	>	* terminate (using {@link Thread#join(long)}), else interrupts
903	>	* the thread (in the hope that it may terminate later) and fails.
904	>	*/
905	>	void awaitTermination(Thread t) {
906	>	awaitTermination(t, LONG_DELAY_MS);
907		}
908
909	<	class ShortRunnable implements Runnable {
910	<	public void run() {
909	>	// Some convenient Runnable classes
910	>
911	>	public abstract class CheckedRunnable implements Runnable {
912	>	protected abstract void realRun() throws Throwable;
913	>
914	>	public final void run() {
915		try {
916	<	Thread.sleep(SHORT_DELAY_MS);
917	<	}
918	<	catch(Exception e) {
378	<	threadUnexpectedException();
916	>	realRun();
917	>	} catch (Throwable t) {
918	>	threadUnexpectedException(t);
919		}
920		}
921		}
922
923	<	class ShortInterruptedRunnable implements Runnable {
924	<	public void run() {
923	>	public abstract class RunnableShouldThrow implements Runnable {
924	>	protected abstract void realRun() throws Throwable;
925	>
926	>	final Class<?> exceptionClass;
927	>
928	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
929	>	this.exceptionClass = exceptionClass;
930	>	}
931	>
932	>	public final void run() {
933		try {
934	<	Thread.sleep(SHORT_DELAY_MS);
935	<	threadShouldThrow();
936	<	}
937	<	catch(InterruptedException success) {
934	>	realRun();
935	>	threadShouldThrow(exceptionClass.getSimpleName());
936	>	} catch (Throwable t) {
937	>	if (! exceptionClass.isInstance(t))
938	>	threadUnexpectedException(t);
939		}
940		}
941		}
942
943	<	class SmallRunnable implements Runnable {
944	<	public void run() {
943	>	public abstract class ThreadShouldThrow extends Thread {
944	>	protected abstract void realRun() throws Throwable;
945	>
946	>	final Class<?> exceptionClass;
947	>
948	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
949	>	this.exceptionClass = exceptionClass;
950	>	}
951	>
952	>	public final void run() {
953		try {
954	<	Thread.sleep(SMALL_DELAY_MS);
955	<	}
956	<	catch(Exception e) {
957	<	threadUnexpectedException();
954	>	realRun();
955	>	threadShouldThrow(exceptionClass.getSimpleName());
956	>	} catch (Throwable t) {
957	>	if (! exceptionClass.isInstance(t))
958	>	threadUnexpectedException(t);
959		}
960		}
961		}
962
963	<	class SmallPossiblyInterruptedRunnable implements Runnable {
964	<	public void run() {
963	>	public abstract class CheckedInterruptedRunnable implements Runnable {
964	>	protected abstract void realRun() throws Throwable;
965	>
966	>	public final void run() {
967		try {
968	<	Thread.sleep(SMALL_DELAY_MS);
969	<	}
970	<	catch(Exception e) {
968	>	realRun();
969	>	threadShouldThrow("InterruptedException");
970	>	} catch (InterruptedException success) {
971	>	threadAssertFalse(Thread.interrupted());
972	>	} catch (Throwable t) {
973	>	threadUnexpectedException(t);
974		}
975		}
976		}
977
978	<	class SmallCallable implements Callable {
979	<	public Object call() {
978	>	public abstract class CheckedCallable<T> implements Callable<T> {
979	>	protected abstract T realCall() throws Throwable;
980	>
981	>	public final T call() {
982		try {
983	<	Thread.sleep(SMALL_DELAY_MS);
984	<	}
985	<	catch(Exception e) {
986	<	threadUnexpectedException();
983	>	return realCall();
984	>	} catch (Throwable t) {
985	>	threadUnexpectedException(t);
986	>	return null;
987		}
423	–	return Boolean.TRUE;
988		}
989		}
990
991	<	class SmallInterruptedRunnable implements Runnable {
992	<	public void run() {
991	>	public abstract class CheckedInterruptedCallable<T>
992	>	implements Callable<T> {
993	>	protected abstract T realCall() throws Throwable;
994	>
995	>	public final T call() {
996		try {
997	<	Thread.sleep(SMALL_DELAY_MS);
998	<	threadShouldThrow();
999	<	}
1000	<	catch(InterruptedException success) {
997	>	T result = realCall();
998	>	threadShouldThrow("InterruptedException");
999	>	return result;
1000	>	} catch (InterruptedException success) {
1001	>	threadAssertFalse(Thread.interrupted());
1002	>	} catch (Throwable t) {
1003	>	threadUnexpectedException(t);
1004		}
1005	+	return null;
1006		}
1007		}
1008
1009	+	public static class NoOpRunnable implements Runnable {
1010	+	public void run() {}
1011	+	}
1012
1013	<	class MediumRunnable implements Runnable {
1014	<	public void run() {
1015	<	try {
1016	<	Thread.sleep(MEDIUM_DELAY_MS);
1017	<	}
1018	<	catch(Exception e) {
1019	<	threadUnexpectedException();
1020	<	}
1013	>	public static class NoOpCallable implements Callable {
1014	>	public Object call() { return Boolean.TRUE; }
1015	>	}
1016	>
1017	>	public static final String TEST_STRING = "a test string";
1018	>
1019	>	public static class StringTask implements Callable<String> {
1020	>	public String call() { return TEST_STRING; }
1021	>	}
1022	>
1023	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1024	>	return new CheckedCallable<String>() {
1025	>	protected String realCall() {
1026	>	try {
1027	>	latch.await();
1028	>	} catch (InterruptedException quittingTime) {}
1029	>	return TEST_STRING;
1030	>	}};
1031	>	}
1032	>
1033	>	public Runnable awaiter(final CountDownLatch latch) {
1034	>	return new CheckedRunnable() {
1035	>	public void realRun() throws InterruptedException {
1036	>	await(latch);
1037	>	}};
1038	>	}
1039	>
1040	>	public void await(CountDownLatch latch) {
1041	>	try {
1042	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1043	>	} catch (Throwable t) {
1044	>	threadUnexpectedException(t);
1045		}
1046		}
1047
1048	<	class MediumInterruptedRunnable implements Runnable {
1049	<	public void run() {
1048	>	public void await(Semaphore semaphore) {
1049	>	try {
1050	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1051	>	} catch (Throwable t) {
1052	>	threadUnexpectedException(t);
1053	>	}
1054	>	}
1055	>
1056	>	//     /**
1057	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1058	>	//      */
1059	>	//     public void await(AtomicBoolean flag) {
1060	>	//         await(flag, LONG_DELAY_MS);
1061	>	//     }
1062	>
1063	>	//     /**
1064	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1065	>	//      */
1066	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1067	>	//         long startTime = System.nanoTime();
1068	>	//         while (!flag.get()) {
1069	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1070	>	//                 throw new AssertionFailedError("timed out");
1071	>	//             Thread.yield();
1072	>	//         }
1073	>	//     }
1074	>
1075	>	public static class NPETask implements Callable<String> {
1076	>	public String call() { throw new NullPointerException(); }
1077	>	}
1078	>
1079	>	public static class CallableOne implements Callable<Integer> {
1080	>	public Integer call() { return one; }
1081	>	}
1082	>
1083	>	public class ShortRunnable extends CheckedRunnable {
1084	>	protected void realRun() throws Throwable {
1085	>	delay(SHORT_DELAY_MS);
1086	>	}
1087	>	}
1088	>
1089	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1090	>	protected void realRun() throws InterruptedException {
1091	>	delay(SHORT_DELAY_MS);
1092	>	}
1093	>	}
1094	>
1095	>	public class SmallRunnable extends CheckedRunnable {
1096	>	protected void realRun() throws Throwable {
1097	>	delay(SMALL_DELAY_MS);
1098	>	}
1099	>	}
1100	>
1101	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1102	>	protected void realRun() {
1103		try {
1104	<	Thread.sleep(MEDIUM_DELAY_MS);
1105	<	threadShouldThrow();
455	<	}
456	<	catch(InterruptedException success) {
457	<	}
1104	>	delay(SMALL_DELAY_MS);
1105	>	} catch (InterruptedException ok) {}
1106		}
1107		}
1108
1109	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1110	<	public void run() {
1109	>	public class SmallCallable extends CheckedCallable {
1110	>	protected Object realCall() throws InterruptedException {
1111	>	delay(SMALL_DELAY_MS);
1112	>	return Boolean.TRUE;
1113	>	}
1114	>	}
1115	>
1116	>	public class MediumRunnable extends CheckedRunnable {
1117	>	protected void realRun() throws Throwable {
1118	>	delay(MEDIUM_DELAY_MS);
1119	>	}
1120	>	}
1121	>
1122	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1123	>	protected void realRun() throws InterruptedException {
1124	>	delay(MEDIUM_DELAY_MS);
1125	>	}
1126	>	}
1127	>
1128	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1129	>	return new CheckedRunnable() {
1130	>	protected void realRun() {
1131	>	try {
1132	>	delay(timeoutMillis);
1133	>	} catch (InterruptedException ok) {}
1134	>	}};
1135	>	}
1136	>
1137	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1138	>	protected void realRun() {
1139		try {
1140	<	Thread.sleep(MEDIUM_DELAY_MS);
1141	<	}
466	<	catch(InterruptedException success) {
467	<	}
1140	>	delay(MEDIUM_DELAY_MS);
1141	>	} catch (InterruptedException ok) {}
1142		}
1143		}
1144
1145	<	class LongPossiblyInterruptedRunnable implements Runnable {
1146	<	public void run() {
1145	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1146	>	protected void realRun() {
1147		try {
1148	<	Thread.sleep(LONG_DELAY_MS);
1149	<	}
476	<	catch(InterruptedException success) {
477	<	}
1148	>	delay(LONG_DELAY_MS);
1149	>	} catch (InterruptedException ok) {}
1150		}
1151		}
1152
1153		/**
1154		* For use as ThreadFactory in constructors
1155		*/
1156	<	static class SimpleThreadFactory implements ThreadFactory{
1157	<	public Thread newThread(Runnable r){
1156	>	public static class SimpleThreadFactory implements ThreadFactory {
1157	>	public Thread newThread(Runnable r) {
1158		return new Thread(r);
1159	<	}
1159	>	}
1160	>	}
1161	>
1162	>	public interface TrackedRunnable extends Runnable {
1163	>	boolean isDone();
1164	>	}
1165	>
1166	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1167	>	return new TrackedRunnable() {
1168	>	private volatile boolean done = false;
1169	>	public boolean isDone() { return done; }
1170	>	public void run() {
1171	>	try {
1172	>	delay(timeoutMillis);
1173	>	done = true;
1174	>	} catch (InterruptedException ok) {}
1175	>	}
1176	>	};
1177		}
1178
1179	<	static class TrackedShortRunnable implements Runnable {
1180	<	volatile boolean done = false;
1179	>	public static class TrackedShortRunnable implements Runnable {
1180	>	public volatile boolean done = false;
1181		public void run() {
1182		try {
1183	<	Thread.sleep(SMALL_DELAY_MS);
1183	>	delay(SHORT_DELAY_MS);
1184		done = true;
1185	<	} catch(Exception e){
497	<	}
1185	>	} catch (InterruptedException ok) {}
1186		}
1187		}
1188
1189	<	static class TrackedMediumRunnable implements Runnable {
1190	<	volatile boolean done = false;
1189	>	public static class TrackedSmallRunnable implements Runnable {
1190	>	public volatile boolean done = false;
1191		public void run() {
1192		try {
1193	<	Thread.sleep(MEDIUM_DELAY_MS);
1193	>	delay(SMALL_DELAY_MS);
1194		done = true;
1195	<	} catch(Exception e){
508	<	}
1195	>	} catch (InterruptedException ok) {}
1196		}
1197		}
1198
1199	<	static class TrackedLongRunnable implements Runnable {
1200	<	volatile boolean done = false;
1199	>	public static class TrackedMediumRunnable implements Runnable {
1200	>	public volatile boolean done = false;
1201		public void run() {
1202		try {
1203	<	Thread.sleep(LONG_DELAY_MS);
1203	>	delay(MEDIUM_DELAY_MS);
1204		done = true;
1205	<	} catch(Exception e){
1206	<	}
1205	>	} catch (InterruptedException ok) {}
1206	>	}
1207	>	}
1208	>
1209	>	public static class TrackedLongRunnable implements Runnable {
1210	>	public volatile boolean done = false;
1211	>	public void run() {
1212	>	try {
1213	>	delay(LONG_DELAY_MS);
1214	>	done = true;
1215	>	} catch (InterruptedException ok) {}
1216		}
1217		}
1218
1219	<	static class TrackedNoOpRunnable implements Runnable {
1220	<	volatile boolean done = false;
1219	>	public static class TrackedNoOpRunnable implements Runnable {
1220	>	public volatile boolean done = false;
1221		public void run() {
1222		done = true;
1223		}
1224		}
1225
1226	<	static class TrackedCallable implements Callable {
1227	<	volatile boolean done = false;
1226	>	public static class TrackedCallable implements Callable {
1227	>	public volatile boolean done = false;
1228		public Object call() {
1229		try {
1230	<	Thread.sleep(SMALL_DELAY_MS);
1230	>	delay(SMALL_DELAY_MS);
1231		done = true;
1232	<	} catch(Exception e){
537	<	}
1232	>	} catch (InterruptedException ok) {}
1233		return Boolean.TRUE;
1234		}
1235		}
1236
1237	+	/**
1238	+	* Analog of CheckedRunnable for RecursiveAction
1239	+	*/
1240	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1241	+	protected abstract void realCompute() throws Throwable;
1242	+
1243	+	@Override protected final void compute() {
1244	+	try {
1245	+	realCompute();
1246	+	} catch (Throwable t) {
1247	+	threadUnexpectedException(t);
1248	+	}
1249	+	}
1250	+	}
1251	+
1252	+	/**
1253	+	* Analog of CheckedCallable for RecursiveTask
1254	+	*/
1255	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1256	+	protected abstract T realCompute() throws Throwable;
1257	+
1258	+	@Override protected final T compute() {
1259	+	try {
1260	+	return realCompute();
1261	+	} catch (Throwable t) {
1262	+	threadUnexpectedException(t);
1263	+	return null;
1264	+	}
1265	+	}
1266	+	}
1267
1268		/**
1269		* For use as RejectedExecutionHandler in constructors
1270		*/
1271	<	static class NoOpREHandler implements RejectedExecutionHandler{
1272	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1271	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1272	>	public void rejectedExecution(Runnable r,
1273	>	ThreadPoolExecutor executor) {}
1274	>	}
1275	>
1276	>	/**
1277	>	* A CyclicBarrier that uses timed await and fails with
1278	>	* AssertionFailedErrors instead of throwing checked exceptions.
1279	>	*/
1280	>	public class CheckedBarrier extends CyclicBarrier {
1281	>	public CheckedBarrier(int parties) { super(parties); }
1282	>
1283	>	public int await() {
1284	>	try {
1285	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1286	>	} catch (TimeoutException e) {
1287	>	throw new AssertionFailedError("timed out");
1288	>	} catch (Exception e) {
1289	>	AssertionFailedError afe =
1290	>	new AssertionFailedError("Unexpected exception: " + e);
1291	>	afe.initCause(e);
1292	>	throw afe;
1293	>	}
1294	>	}
1295	>	}
1296	>
1297	>	void checkEmpty(BlockingQueue q) {
1298	>	try {
1299	>	assertTrue(q.isEmpty());
1300	>	assertEquals(0, q.size());
1301	>	assertNull(q.peek());
1302	>	assertNull(q.poll());
1303	>	assertNull(q.poll(0, MILLISECONDS));
1304	>	assertEquals(q.toString(), "[]");
1305	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1306	>	assertFalse(q.iterator().hasNext());
1307	>	try {
1308	>	q.element();
1309	>	shouldThrow();
1310	>	} catch (NoSuchElementException success) {}
1311	>	try {
1312	>	q.iterator().next();
1313	>	shouldThrow();
1314	>	} catch (NoSuchElementException success) {}
1315	>	try {
1316	>	q.remove();
1317	>	shouldThrow();
1318	>	} catch (NoSuchElementException success) {}
1319	>	} catch (InterruptedException ie) {
1320	>	threadUnexpectedException(ie);
1321	>	}
1322	>	}
1323	>
1324	>	void assertSerialEquals(Object x, Object y) {
1325	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1326	>	}
1327	>
1328	>	void assertNotSerialEquals(Object x, Object y) {
1329	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1330	>	}
1331	>
1332	>	byte[] serialBytes(Object o) {
1333	>	try {
1334	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1335	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1336	>	oos.writeObject(o);
1337	>	oos.flush();
1338	>	oos.close();
1339	>	return bos.toByteArray();
1340	>	} catch (Throwable t) {
1341	>	threadUnexpectedException(t);
1342	>	return new byte[0];
1343	>	}
1344	>	}
1345	>
1346	>	@SuppressWarnings("unchecked")
1347	>	<T> T serialClone(T o) {
1348	>	try {
1349	>	ObjectInputStream ois = new ObjectInputStream
1350	>	(new ByteArrayInputStream(serialBytes(o)));
1351	>	T clone = (T) ois.readObject();
1352	>	assertSame(o.getClass(), clone.getClass());
1353	>	return clone;
1354	>	} catch (Throwable t) {
1355	>	threadUnexpectedException(t);
1356	>	return null;
1357	>	}
1358	>	}
1359	>
1360	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1361	>	Runnable... throwingActions) {
1362	>	for (Runnable throwingAction : throwingActions) {
1363	>	boolean threw = false;
1364	>	try { throwingAction.run(); }
1365	>	catch (Throwable t) {
1366	>	threw = true;
1367	>	if (!expectedExceptionClass.isInstance(t)) {
1368	>	AssertionFailedError afe =
1369	>	new AssertionFailedError
1370	>	("Expected " + expectedExceptionClass.getName() +
1371	>	", got " + t.getClass().getName());
1372	>	afe.initCause(t);
1373	>	threadUnexpectedException(afe);
1374	>	}
1375	>	}
1376	>	if (!threw)
1377	>	shouldThrow(expectedExceptionClass.getName());
1378	>	}
1379		}
549	–
550	–
1380		}

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