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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.27 by jsr166, Thu May 12 03:20:56 2005 UTC vs.
Revision 1.113 by dl, Sun Sep 8 23:00:36 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
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,
#	Line 25 | Line 47 | import java.security.*;
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
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
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
#	Line 47 | Line 69 | import java.security.*;
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 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	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
125	>	* The number of milliseconds that tests are permitted for
126	>	* execution without being reported, when profileTests is set.
127		*/
128	<	public static void main (String[] args) {
129	<	int iters = 1;
130	<	if (args.length > 0)
131	<	iters = Integer.parseInt(args[0]);
128	>	private static final long profileThreshold =
129	>	Long.getLong("jsr166.profileThreshold", 100);
130	>
131	>	/**
132	>	* The number of repetitions per test (for tickling rare bugs).
133	>	*/
134	>	private static final int runsPerTest =
135	>	Integer.getInteger("jsr166.runsPerTest", 1);
136	>
137	>	protected void runTest() throws Throwable {
138	>	for (int i = 0; i < runsPerTest; i++) {
139	>	if (profileTests)
140	>	runTestProfiled();
141	>	else
142	>	super.runTest();
143	>	}
144	>	}
145	>
146	>	protected void runTestProfiled() throws Throwable {
147	>	long t0 = System.nanoTime();
148	>	try {
149	>	super.runTest();
150	>	} finally {
151	>	long elapsedMillis =
152	>	(System.nanoTime() - t0) / (1000L * 1000L);
153	>	if (elapsedMillis >= profileThreshold)
154	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
155	>	}
156	>	}
157	>
158	>	/**
159	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
160	>	* Optional command line arg provides the number of iterations to
161	>	* repeat running the tests.
162	>	*/
163	>	public static void main(String[] args) {
164	>	if (useSecurityManager) {
165	>	System.err.println("Setting a permissive security manager");
166	>	Policy.setPolicy(permissivePolicy());
167	>	System.setSecurityManager(new SecurityManager());
168	>	}
169	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
170	>
171		Test s = suite();
172		for (int i = 0; i < iters; ++i) {
173	<	junit.textui.TestRunner.run (s);
173	>	junit.textui.TestRunner.run(s);
174		System.gc();
175		System.runFinalization();
176		}
177		System.exit(0);
178		}
179
180	<	/**
181	<	* Collects all JSR166 unit tests as one suite
182	<	*/
183	<	public static Test suite ( ) {
184	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
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	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
194	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
195	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
196	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
197	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
198	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
199	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
200	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
201	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
202	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
203	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
204	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
205	<	suite.addTest(new TestSuite(AtomicLongTest.class));
206	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
207	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
208	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
209	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
210	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
211	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
212	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
213	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
214	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
215	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
216	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
217	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
218	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
219	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
220	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
221	<	suite.addTest(new TestSuite(DelayQueueTest.class));
222	<	suite.addTest(new TestSuite(ExchangerTest.class));
223	<	suite.addTest(new TestSuite(ExecutorsTest.class));
224	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
225	<	suite.addTest(new TestSuite(FutureTaskTest.class));
226	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
227	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
228	<	suite.addTest(new TestSuite(LinkedListTest.class));
229	<	suite.addTest(new TestSuite(LockSupportTest.class));
230	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
231	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
232	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
233	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
234	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
235	<	suite.addTest(new TestSuite(SemaphoreTest.class));
236	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
237	<	suite.addTest(new TestSuite(SystemTest.class));
238	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
239	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
240	<	suite.addTest(new TestSuite(ThreadTest.class));
241	<	suite.addTest(new TestSuite(TimeUnitTest.class));
242	<	suite.addTest(new TestSuite(TreeMapTest.class));
243	<	suite.addTest(new TestSuite(TreeSetTest.class));
244	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
245	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
193	>	public static void addNamedTestClasses(TestSuite suite,
194	>	String... testClassNames) {
195	>	for (String testClassName : testClassNames) {
196	>	try {
197	>	Class<?> testClass = Class.forName(testClassName);
198	>	Method m = testClass.getDeclaredMethod("suite",
199	>	new Class<?>[0]);
200	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
201	>	} catch (Exception e) {
202	>	throw new Error("Missing test class", e);
203	>	}
204	>	}
205	>	}
206	>
207	>	public static final double JAVA_CLASS_VERSION;
208	>	static {
209	>	try {
210	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
211	>	new java.security.PrivilegedAction<Double>() {
212	>	public Double run() {
213	>	return Double.valueOf(System.getProperty("java.class.version"));}});
214	>	} catch (Throwable t) {
215	>	throw new Error(t);
216	>	}
217	>	}
218	>
219	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
220	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
221	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
222	>
223	>	/**
224	>	* Collects all JSR166 unit tests as one suite.
225	>	*/
226	>	public static Test suite() {
227	>	// Java7+ test classes
228	>	TestSuite suite = newTestSuite(
229	>	ForkJoinPoolTest.suite(),
230	>	ForkJoinTaskTest.suite(),
231	>	RecursiveActionTest.suite(),
232	>	RecursiveTaskTest.suite(),
233	>	LinkedTransferQueueTest.suite(),
234	>	PhaserTest.suite(),
235	>	ThreadLocalRandomTest.suite(),
236	>	AbstractExecutorServiceTest.suite(),
237	>	AbstractQueueTest.suite(),
238	>	AbstractQueuedSynchronizerTest.suite(),
239	>	AbstractQueuedLongSynchronizerTest.suite(),
240	>	ArrayBlockingQueueTest.suite(),
241	>	ArrayDequeTest.suite(),
242	>	AtomicBooleanTest.suite(),
243	>	AtomicIntegerArrayTest.suite(),
244	>	AtomicIntegerFieldUpdaterTest.suite(),
245	>	AtomicIntegerTest.suite(),
246	>	AtomicLongArrayTest.suite(),
247	>	AtomicLongFieldUpdaterTest.suite(),
248	>	AtomicLongTest.suite(),
249	>	AtomicMarkableReferenceTest.suite(),
250	>	AtomicReferenceArrayTest.suite(),
251	>	AtomicReferenceFieldUpdaterTest.suite(),
252	>	AtomicReferenceTest.suite(),
253	>	AtomicStampedReferenceTest.suite(),
254	>	ConcurrentHashMapTest.suite(),
255	>	ConcurrentLinkedDequeTest.suite(),
256	>	ConcurrentLinkedQueueTest.suite(),
257	>	ConcurrentSkipListMapTest.suite(),
258	>	ConcurrentSkipListSubMapTest.suite(),
259	>	ConcurrentSkipListSetTest.suite(),
260	>	ConcurrentSkipListSubSetTest.suite(),
261	>	CopyOnWriteArrayListTest.suite(),
262	>	CopyOnWriteArraySetTest.suite(),
263	>	CountDownLatchTest.suite(),
264	>	CyclicBarrierTest.suite(),
265	>	DelayQueueTest.suite(),
266	>	EntryTest.suite(),
267	>	ExchangerTest.suite(),
268	>	ExecutorsTest.suite(),
269	>	ExecutorCompletionServiceTest.suite(),
270	>	FutureTaskTest.suite(),
271	>	LinkedBlockingDequeTest.suite(),
272	>	LinkedBlockingQueueTest.suite(),
273	>	LinkedListTest.suite(),
274	>	LockSupportTest.suite(),
275	>	PriorityBlockingQueueTest.suite(),
276	>	PriorityQueueTest.suite(),
277	>	ReentrantLockTest.suite(),
278	>	ReentrantReadWriteLockTest.suite(),
279	>	ScheduledExecutorTest.suite(),
280	>	ScheduledExecutorSubclassTest.suite(),
281	>	SemaphoreTest.suite(),
282	>	SynchronousQueueTest.suite(),
283	>	SystemTest.suite(),
284	>	ThreadLocalTest.suite(),
285	>	ThreadPoolExecutorTest.suite(),
286	>	ThreadPoolExecutorSubclassTest.suite(),
287	>	ThreadTest.suite(),
288	>	TimeUnitTest.suite(),
289	>	TreeMapTest.suite(),
290	>	TreeSetTest.suite(),
291	>	TreeSubMapTest.suite(),
292	>	TreeSubSetTest.suite());
293	>
294	>	// Java8+ test classes
295	>	if (atLeastJava8()) {
296	>	String[] java8TestClassNames = {
297	>	"Atomic8Test",
298	>	"CompletableFutureTest",
299	>	"ConcurrentHashMap8Test",
300	>	"CountedCompleterTest",
301	>	"DoubleAccumulatorTest",
302	>	"DoubleAdderTest",
303	>	"ForkJoinPool8Test",
304	>	"ForkJoinTask8Test",
305	>	"LongAccumulatorTest",
306	>	"LongAdderTest",
307	>	"SplittableRandomTest",
308	>	"StampedLockTest",
309	>	"ThreadLocalRandom8Test",
310	>	};
311	>	addNamedTestClasses(suite, java8TestClassNames);
312	>	}
313
314		return suite;
315		}
316
317	+	// Delays for timing-dependent tests, in milliseconds.
318
319		public static long SHORT_DELAY_MS;
320		public static long SMALL_DELAY_MS;
321		public static long MEDIUM_DELAY_MS;
322		public static long LONG_DELAY_MS;
323
174	–
324		/**
325		* Returns the shortest timed delay. This could
326		* be reimplemented to use for example a Property.
#	Line 180 | Line 329 | public class JSR166TestCase extends Test
329		return 50;
330		}
331
183	–
332		/**
333		* Sets delays as multiples of SHORT_DELAY.
334		*/
335	<	protected  void setDelays() {
335	>	protected void setDelays() {
336		SHORT_DELAY_MS = getShortDelay();
337	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
337	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
338		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
339	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
339	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
340		}
341
342		/**
343	<	* Flag set true if any threadAssert methods fail
343	>	* Returns a timeout in milliseconds to be used in tests that
344	>	* verify that operations block or time out.
345		*/
346	<	volatile boolean threadFailed;
346	>	long timeoutMillis() {
347	>	return SHORT_DELAY_MS / 4;
348	>	}
349
350		/**
351	<	* Initializes test to indicate that no thread assertions have failed
351	>	* Returns a new Date instance representing a time delayMillis
352	>	* milliseconds in the future.
353		*/
354	+	Date delayedDate(long delayMillis) {
355	+	return new Date(System.currentTimeMillis() + delayMillis);
356	+	}
357	+
358	+	/**
359	+	* The first exception encountered if any threadAssertXXX method fails.
360	+	*/
361	+	private final AtomicReference<Throwable> threadFailure
362	+	= new AtomicReference<Throwable>(null);
363	+
364	+	/**
365	+	* Records an exception so that it can be rethrown later in the test
366	+	* harness thread, triggering a test case failure.  Only the first
367	+	* failure is recorded; subsequent calls to this method from within
368	+	* the same test have no effect.
369	+	*/
370	+	public void threadRecordFailure(Throwable t) {
371	+	threadFailure.compareAndSet(null, t);
372	+	}
373	+
374		public void setUp() {
375		setDelays();
204	–	threadFailed = false;
376		}
377
378		/**
379	<	* Triggers test case failure if any thread assertions have failed
380	<	*/
381	<	public void tearDown() {
382	<	assertFalse(threadFailed);
379	>	* Extra checks that get done for all test cases.
380	>	*
381	>	* Triggers test case failure if any thread assertions have failed,
382	>	* by rethrowing, in the test harness thread, any exception recorded
383	>	* earlier by threadRecordFailure.
384	>	*
385	>	* Triggers test case failure if interrupt status is set in the main thread.
386	>	*/
387	>	public void tearDown() throws Exception {
388	>	Throwable t = threadFailure.getAndSet(null);
389	>	if (t != null) {
390	>	if (t instanceof Error)
391	>	throw (Error) t;
392	>	else if (t instanceof RuntimeException)
393	>	throw (RuntimeException) t;
394	>	else if (t instanceof Exception)
395	>	throw (Exception) t;
396	>	else {
397	>	AssertionFailedError afe =
398	>	new AssertionFailedError(t.toString());
399	>	afe.initCause(t);
400	>	throw afe;
401	>	}
402	>	}
403	>
404	>	if (Thread.interrupted())
405	>	throw new AssertionFailedError("interrupt status set in main thread");
406	>
407	>	checkForkJoinPoolThreadLeaks();
408		}
409
410		/**
411	<	* Fail, also setting status to indicate current testcase should fail
411	>	* Find missing try { ... } finally { joinPool(e); }
412	>	*/
413	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
414	>	Thread[] survivors = new Thread[5];
415	>	int count = Thread.enumerate(survivors);
416	>	for (int i = 0; i < count; i++) {
417	>	Thread thread = survivors[i];
418	>	String name = thread.getName();
419	>	if (name.startsWith("ForkJoinPool-")) {
420	>	// give thread some time to terminate
421	>	thread.join(LONG_DELAY_MS);
422	>	if (!thread.isAlive()) continue;
423	>	thread.stop();
424	>	throw new AssertionFailedError
425	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
426	>	toString(), name));
427	>	}
428	>	}
429	>	}
430	>
431	>	/**
432	>	* Just like fail(reason), but additionally recording (using
433	>	* threadRecordFailure) any AssertionFailedError thrown, so that
434	>	* the current testcase will fail.
435		*/
436		public void threadFail(String reason) {
437	<	threadFailed = true;
438	<	fail(reason);
437	>	try {
438	>	fail(reason);
439	>	} catch (AssertionFailedError t) {
440	>	threadRecordFailure(t);
441	>	fail(reason);
442	>	}
443		}
444
445		/**
446	<	* If expression not true, set status to indicate current testcase
447	<	* should fail
446	>	* Just like assertTrue(b), but additionally recording (using
447	>	* threadRecordFailure) any AssertionFailedError thrown, so that
448	>	* the current testcase will fail.
449		*/
450		public void threadAssertTrue(boolean b) {
451	<	if (!b) {
228	<	threadFailed = true;
451	>	try {
452		assertTrue(b);
453	+	} catch (AssertionFailedError t) {
454	+	threadRecordFailure(t);
455	+	throw t;
456		}
457		}
458
459		/**
460	<	* If expression not false, set status to indicate current testcase
461	<	* should fail
460	>	* Just like assertFalse(b), but additionally recording (using
461	>	* threadRecordFailure) any AssertionFailedError thrown, so that
462	>	* the current testcase will fail.
463		*/
464		public void threadAssertFalse(boolean b) {
465	<	if (b) {
239	<	threadFailed = true;
465	>	try {
466		assertFalse(b);
467	+	} catch (AssertionFailedError t) {
468	+	threadRecordFailure(t);
469	+	throw t;
470		}
471		}
472
473		/**
474	<	* If argument not null, set status to indicate current testcase
475	<	* should fail
474	>	* Just like assertNull(x), but additionally recording (using
475	>	* threadRecordFailure) any AssertionFailedError thrown, so that
476	>	* the current testcase will fail.
477		*/
478		public void threadAssertNull(Object x) {
479	<	if (x != null) {
250	<	threadFailed = true;
479	>	try {
480		assertNull(x);
481	+	} catch (AssertionFailedError t) {
482	+	threadRecordFailure(t);
483	+	throw t;
484		}
485		}
486
487		/**
488	<	* If arguments not equal, set status to indicate current testcase
489	<	* should fail
488	>	* Just like assertEquals(x, y), but additionally recording (using
489	>	* threadRecordFailure) any AssertionFailedError thrown, so that
490	>	* the current testcase will fail.
491		*/
492		public void threadAssertEquals(long x, long y) {
493	<	if (x != y) {
261	<	threadFailed = true;
493	>	try {
494		assertEquals(x, y);
495	+	} catch (AssertionFailedError t) {
496	+	threadRecordFailure(t);
497	+	throw t;
498		}
499		}
500
501		/**
502	<	* If arguments not equal, set status to indicate current testcase
503	<	* should fail
502	>	* Just like assertEquals(x, y), but additionally recording (using
503	>	* threadRecordFailure) any AssertionFailedError thrown, so that
504	>	* the current testcase will fail.
505		*/
506		public void threadAssertEquals(Object x, Object y) {
507	<	if (x != y && (x == null || !x.equals(y))) {
272	<	threadFailed = true;
507	>	try {
508		assertEquals(x, y);
509	+	} catch (AssertionFailedError t) {
510	+	threadRecordFailure(t);
511	+	throw t;
512	+	} catch (Throwable t) {
513	+	threadUnexpectedException(t);
514	+	}
515	+	}
516	+
517	+	/**
518	+	* Just like assertSame(x, y), but additionally recording (using
519	+	* threadRecordFailure) any AssertionFailedError thrown, so that
520	+	* the current testcase will fail.
521	+	*/
522	+	public void threadAssertSame(Object x, Object y) {
523	+	try {
524	+	assertSame(x, y);
525	+	} catch (AssertionFailedError t) {
526	+	threadRecordFailure(t);
527	+	throw t;
528		}
529		}
530
531		/**
532	<	* threadFail with message "should throw exception"
532	>	* Calls threadFail with message "should throw exception".
533		*/
534		public void threadShouldThrow() {
535	<	threadFailed = true;
282	<	fail("should throw exception");
535	>	threadFail("should throw exception");
536		}
537
538		/**
539	<	* threadFail with message "Unexpected exception"
539	>	* Calls threadFail with message "should throw" + exceptionName.
540		*/
541	<	public void threadUnexpectedException() {
542	<	threadFailed = true;
290	<	fail("Unexpected exception");
541	>	public void threadShouldThrow(String exceptionName) {
542	>	threadFail("should throw " + exceptionName);
543		}
544
545	+	/**
546	+	* Records the given exception using {@link #threadRecordFailure},
547	+	* then rethrows the exception, wrapping it in an
548	+	* AssertionFailedError if necessary.
549	+	*/
550	+	public void threadUnexpectedException(Throwable t) {
551	+	threadRecordFailure(t);
552	+	t.printStackTrace();
553	+	if (t instanceof RuntimeException)
554	+	throw (RuntimeException) t;
555	+	else if (t instanceof Error)
556	+	throw (Error) t;
557	+	else {
558	+	AssertionFailedError afe =
559	+	new AssertionFailedError("unexpected exception: " + t);
560	+	afe.initCause(t);
561	+	throw afe;
562	+	}
563	+	}
564	+
565	+	/**
566	+	* Delays, via Thread.sleep, for the given millisecond delay, but
567	+	* if the sleep is shorter than specified, may re-sleep or yield
568	+	* until time elapses.
569	+	*/
570	+	static void delay(long millis) throws InterruptedException {
571	+	long startTime = System.nanoTime();
572	+	long ns = millis * 1000 * 1000;
573	+	for (;;) {
574	+	if (millis > 0L)
575	+	Thread.sleep(millis);
576	+	else // too short to sleep
577	+	Thread.yield();
578	+	long d = ns - (System.nanoTime() - startTime);
579	+	if (d > 0L)
580	+	millis = d / (1000 * 1000);
581	+	else
582	+	break;
583	+	}
584	+	}
585
586		/**
587	<	* Wait out termination of a thread pool or fail doing so
587	>	* Waits out termination of a thread pool or fails doing so.
588		*/
589	<	public void joinPool(ExecutorService exec) {
589	>	void joinPool(ExecutorService exec) {
590		try {
591		exec.shutdown();
592	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
593	<	} catch(SecurityException ok) {
592	>	assertTrue("ExecutorService did not terminate in a timely manner",
593	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
594	>	} catch (SecurityException ok) {
595		// Allowed in case test doesn't have privs
596	<	} catch(InterruptedException ie) {
597	<	fail("Unexpected exception");
596	>	} catch (InterruptedException ie) {
597	>	fail("Unexpected InterruptedException");
598		}
599		}
600
601	+	/**
602	+	* A debugging tool to print all stack traces, as jstack does.
603	+	*/
604	+	static void printAllStackTraces() {
605	+	for (ThreadInfo info :
606	+	ManagementFactory.getThreadMXBean()
607	+	.dumpAllThreads(true, true))
608	+	System.err.print(info);
609	+	}
610	+
611	+	/**
612	+	* Checks that thread does not terminate within the default
613	+	* millisecond delay of {@code timeoutMillis()}.
614	+	*/
615	+	void assertThreadStaysAlive(Thread thread) {
616	+	assertThreadStaysAlive(thread, timeoutMillis());
617	+	}
618	+
619	+	/**
620	+	* Checks that thread does not terminate within the given millisecond delay.
621	+	*/
622	+	void assertThreadStaysAlive(Thread thread, long millis) {
623	+	try {
624	+	// No need to optimize the failing case via Thread.join.
625	+	delay(millis);
626	+	assertTrue(thread.isAlive());
627	+	} catch (InterruptedException ie) {
628	+	fail("Unexpected InterruptedException");
629	+	}
630	+	}
631	+
632	+	/**
633	+	* Checks that the threads do not terminate within the default
634	+	* millisecond delay of {@code timeoutMillis()}.
635	+	*/
636	+	void assertThreadsStayAlive(Thread... threads) {
637	+	assertThreadsStayAlive(timeoutMillis(), threads);
638	+	}
639	+
640	+	/**
641	+	* Checks that the threads do not terminate within the given millisecond delay.
642	+	*/
643	+	void assertThreadsStayAlive(long millis, Thread... threads) {
644	+	try {
645	+	// No need to optimize the failing case via Thread.join.
646	+	delay(millis);
647	+	for (Thread thread : threads)
648	+	assertTrue(thread.isAlive());
649	+	} catch (InterruptedException ie) {
650	+	fail("Unexpected InterruptedException");
651	+	}
652	+	}
653	+
654	+	/**
655	+	* Checks that future.get times out, with the default timeout of
656	+	* {@code timeoutMillis()}.
657	+	*/
658	+	void assertFutureTimesOut(Future future) {
659	+	assertFutureTimesOut(future, timeoutMillis());
660	+	}
661
662		/**
663	<	* fail with message "should throw exception"
663	>	* Checks that future.get times out, with the given millisecond timeout.
664	>	*/
665	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
666	>	long startTime = System.nanoTime();
667	>	try {
668	>	future.get(timeoutMillis, MILLISECONDS);
669	>	shouldThrow();
670	>	} catch (TimeoutException success) {
671	>	} catch (Exception e) {
672	>	threadUnexpectedException(e);
673	>	} finally { future.cancel(true); }
674	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
675	>	}
676	>
677	>	/**
678	>	* Fails with message "should throw exception".
679		*/
680		public void shouldThrow() {
681		fail("Should throw exception");
682		}
683
684		/**
685	<	* fail with message "Unexpected exception"
685	>	* Fails with message "should throw " + exceptionName.
686		*/
687	<	public void unexpectedException() {
688	<	fail("Unexpected exception");
687	>	public void shouldThrow(String exceptionName) {
688	>	fail("Should throw " + exceptionName);
689		}
690
323	–
691		/**
692		* The number of elements to place in collections, arrays, etc.
693		*/
694	<	static final int SIZE = 20;
694	>	public static final int SIZE = 20;
695
696		// Some convenient Integer constants
697
698	<	static final Integer zero = new Integer(0);
699	<	static final Integer one = new Integer(1);
700	<	static final Integer two = new Integer(2);
701	<	static final Integer three  = new Integer(3);
702	<	static final Integer four  = new Integer(4);
703	<	static final Integer five  = new Integer(5);
704	<	static final Integer six = new Integer(6);
705	<	static final Integer seven = new Integer(7);
706	<	static final Integer eight = new Integer(8);
707	<	static final Integer nine = new Integer(9);
708	<	static final Integer m1  = new Integer(-1);
709	<	static final Integer m2  = new Integer(-2);
710	<	static final Integer m3  = new Integer(-3);
711	<	static final Integer m4 = new Integer(-4);
712	<	static final Integer m5 = new Integer(-5);
713	<	static final Integer m10 = new Integer(-10);
698	>	public static final Integer zero  = new Integer(0);
699	>	public static final Integer one   = new Integer(1);
700	>	public static final Integer two   = new Integer(2);
701	>	public static final Integer three = new Integer(3);
702	>	public static final Integer four  = new Integer(4);
703	>	public static final Integer five  = new Integer(5);
704	>	public static final Integer six   = new Integer(6);
705	>	public static final Integer seven = new Integer(7);
706	>	public static final Integer eight = new Integer(8);
707	>	public static final Integer nine  = new Integer(9);
708	>	public static final Integer m1  = new Integer(-1);
709	>	public static final Integer m2  = new Integer(-2);
710	>	public static final Integer m3  = new Integer(-3);
711	>	public static final Integer m4  = new Integer(-4);
712	>	public static final Integer m5  = new Integer(-5);
713	>	public static final Integer m6  = new Integer(-6);
714	>	public static final Integer m10 = new Integer(-10);
715	>
716	>	/**
717	>	* Runs Runnable r with a security policy that permits precisely
718	>	* the specified permissions.  If there is no current security
719	>	* manager, the runnable is run twice, both with and without a
720	>	* security manager.  We require that any security manager permit
721	>	* getPolicy/setPolicy.
722	>	*/
723	>	public void runWithPermissions(Runnable r, Permission... permissions) {
724	>	SecurityManager sm = System.getSecurityManager();
725	>	if (sm == null) {
726	>	r.run();
727	>	}
728	>	runWithSecurityManagerWithPermissions(r, permissions);
729	>	}
730
731	+	/**
732	+	* Runs Runnable r with a security policy that permits precisely
733	+	* the specified permissions.  If there is no current security
734	+	* manager, a temporary one is set for the duration of the
735	+	* Runnable.  We require that any security manager permit
736	+	* getPolicy/setPolicy.
737	+	*/
738	+	public void runWithSecurityManagerWithPermissions(Runnable r,
739	+	Permission... permissions) {
740	+	SecurityManager sm = System.getSecurityManager();
741	+	if (sm == null) {
742	+	Policy savedPolicy = Policy.getPolicy();
743	+	try {
744	+	Policy.setPolicy(permissivePolicy());
745	+	System.setSecurityManager(new SecurityManager());
746	+	runWithSecurityManagerWithPermissions(r, permissions);
747	+	} finally {
748	+	System.setSecurityManager(null);
749	+	Policy.setPolicy(savedPolicy);
750	+	}
751	+	} else {
752	+	Policy savedPolicy = Policy.getPolicy();
753	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
754	+	Policy.setPolicy(policy);
755	+
756	+	try {
757	+	r.run();
758	+	} finally {
759	+	policy.addPermission(new SecurityPermission("setPolicy"));
760	+	Policy.setPolicy(savedPolicy);
761	+	}
762	+	}
763	+	}
764	+
765	+	/**
766	+	* Runs a runnable without any permissions.
767	+	*/
768	+	public void runWithoutPermissions(Runnable r) {
769	+	runWithPermissions(r);
770	+	}
771
772		/**
773		* A security policy where new permissions can be dynamically added
774		* or all cleared.
775		*/
776	<	static class AdjustablePolicy extends java.security.Policy {
776	>	public static class AdjustablePolicy extends java.security.Policy {
777		Permissions perms = new Permissions();
778	<	AdjustablePolicy() { }
778	>	AdjustablePolicy(Permission... permissions) {
779	>	for (Permission permission : permissions)
780	>	perms.add(permission);
781	>	}
782		void addPermission(Permission perm) { perms.add(perm); }
783		void clearPermissions() { perms = new Permissions(); }
784	<	public PermissionCollection getPermissions(CodeSource cs) {
785	<	return perms;
786	<	}
787	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
788	<	return perms;
789	<	}
790	<	public boolean implies(ProtectionDomain pd, Permission p) {
791	<	return perms.implies(p);
792	<	}
793	<	public void refresh() {}
784	>	public PermissionCollection getPermissions(CodeSource cs) {
785	>	return perms;
786	>	}
787	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
788	>	return perms;
789	>	}
790	>	public boolean implies(ProtectionDomain pd, Permission p) {
791	>	return perms.implies(p);
792	>	}
793	>	public void refresh() {}
794	>	public String toString() {
795	>	List<Permission> ps = new ArrayList<Permission>();
796	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
797	>	ps.add(e.nextElement());
798	>	return "AdjustablePolicy with permissions " + ps;
799	>	}
800		}
801
802	+	/**
803	+	* Returns a policy containing all the permissions we ever need.
804	+	*/
805	+	public static Policy permissivePolicy() {
806	+	return new AdjustablePolicy
807	+	// Permissions j.u.c. needs directly
808	+	(new RuntimePermission("modifyThread"),
809	+	new RuntimePermission("getClassLoader"),
810	+	new RuntimePermission("setContextClassLoader"),
811	+	// Permissions needed to change permissions!
812	+	new SecurityPermission("getPolicy"),
813	+	new SecurityPermission("setPolicy"),
814	+	new RuntimePermission("setSecurityManager"),
815	+	// Permissions needed by the junit test harness
816	+	new RuntimePermission("accessDeclaredMembers"),
817	+	new PropertyPermission("*", "read"),
818	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
819	+	}
820
821	<	// Some convenient Runnable classes
821	>	/**
822	>	* Sleeps until the given time has elapsed.
823	>	* Throws AssertionFailedError if interrupted.
824	>	*/
825	>	void sleep(long millis) {
826	>	try {
827	>	delay(millis);
828	>	} catch (InterruptedException ie) {
829	>	AssertionFailedError afe =
830	>	new AssertionFailedError("Unexpected InterruptedException");
831	>	afe.initCause(ie);
832	>	throw afe;
833	>	}
834	>	}
835
836	<	static class NoOpRunnable implements Runnable {
837	<	public void run() {}
836	>	/**
837	>	* Spin-waits up to the specified number of milliseconds for the given
838	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
839	>	*/
840	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
841	>	long startTime = System.nanoTime();
842	>	for (;;) {
843	>	Thread.State s = thread.getState();
844	>	if (s == Thread.State.BLOCKED ||
845	>	s == Thread.State.WAITING ||
846	>	s == Thread.State.TIMED_WAITING)
847	>	return;
848	>	else if (s == Thread.State.TERMINATED)
849	>	fail("Unexpected thread termination");
850	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
851	>	threadAssertTrue(thread.isAlive());
852	>	return;
853	>	}
854	>	Thread.yield();
855	>	}
856		}
857
858	<	static class NoOpCallable implements Callable {
859	<	public Object call() { return Boolean.TRUE; }
858	>	/**
859	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
860	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
861	>	*/
862	>	void waitForThreadToEnterWaitState(Thread thread) {
863	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
864		}
865
866	<	static final String TEST_STRING = "a test string";
866	>	/**
867	>	* Returns the number of milliseconds since time given by
868	>	* startNanoTime, which must have been previously returned from a
869	>	* call to {@link System.nanoTime()}.
870	>	*/
871	>	long millisElapsedSince(long startNanoTime) {
872	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
873	>	}
874
875	<	static class StringTask implements Callable<String> {
876	<	public String call() { return TEST_STRING; }
875	>	/**
876	>	* Returns a new started daemon Thread running the given runnable.
877	>	*/
878	>	Thread newStartedThread(Runnable runnable) {
879	>	Thread t = new Thread(runnable);
880	>	t.setDaemon(true);
881	>	t.start();
882	>	return t;
883		}
884
885	<	static class NPETask implements Callable<String> {
886	<	public String call() { throw new NullPointerException(); }
885	>	/**
886	>	* Waits for the specified time (in milliseconds) for the thread
887	>	* to terminate (using {@link Thread#join(long)}), else interrupts
888	>	* the thread (in the hope that it may terminate later) and fails.
889	>	*/
890	>	void awaitTermination(Thread t, long timeoutMillis) {
891	>	try {
892	>	t.join(timeoutMillis);
893	>	} catch (InterruptedException ie) {
894	>	threadUnexpectedException(ie);
895	>	} finally {
896	>	if (t.getState() != Thread.State.TERMINATED) {
897	>	t.interrupt();
898	>	fail("Test timed out");
899	>	}
900	>	}
901		}
902
903	<	static class CallableOne implements Callable<Integer> {
904	<	public Integer call() { return one; }
903	>	/**
904	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
905	>	* terminate (using {@link Thread#join(long)}), else interrupts
906	>	* the thread (in the hope that it may terminate later) and fails.
907	>	*/
908	>	void awaitTermination(Thread t) {
909	>	awaitTermination(t, LONG_DELAY_MS);
910		}
911
912	<	class ShortRunnable implements Runnable {
913	<	public void run() {
912	>	// Some convenient Runnable classes
913	>
914	>	public abstract class CheckedRunnable implements Runnable {
915	>	protected abstract void realRun() throws Throwable;
916	>
917	>	public final void run() {
918		try {
919	<	Thread.sleep(SHORT_DELAY_MS);
920	<	}
921	<	catch(Exception e) {
401	<	threadUnexpectedException();
919	>	realRun();
920	>	} catch (Throwable t) {
921	>	threadUnexpectedException(t);
922		}
923		}
924		}
925
926	<	class ShortInterruptedRunnable implements Runnable {
927	<	public void run() {
926	>	public abstract class RunnableShouldThrow implements Runnable {
927	>	protected abstract void realRun() throws Throwable;
928	>
929	>	final Class<?> exceptionClass;
930	>
931	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
932	>	this.exceptionClass = exceptionClass;
933	>	}
934	>
935	>	public final void run() {
936		try {
937	<	Thread.sleep(SHORT_DELAY_MS);
938	<	threadShouldThrow();
939	<	}
940	<	catch(InterruptedException success) {
937	>	realRun();
938	>	threadShouldThrow(exceptionClass.getSimpleName());
939	>	} catch (Throwable t) {
940	>	if (! exceptionClass.isInstance(t))
941	>	threadUnexpectedException(t);
942		}
943		}
944		}
945
946	<	class SmallRunnable implements Runnable {
947	<	public void run() {
946	>	public abstract class ThreadShouldThrow extends Thread {
947	>	protected abstract void realRun() throws Throwable;
948	>
949	>	final Class<?> exceptionClass;
950	>
951	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
952	>	this.exceptionClass = exceptionClass;
953	>	}
954	>
955	>	public final void run() {
956		try {
957	<	Thread.sleep(SMALL_DELAY_MS);
958	<	}
959	<	catch(Exception e) {
960	<	threadUnexpectedException();
957	>	realRun();
958	>	threadShouldThrow(exceptionClass.getSimpleName());
959	>	} catch (Throwable t) {
960	>	if (! exceptionClass.isInstance(t))
961	>	threadUnexpectedException(t);
962		}
963		}
964		}
965
966	<	class SmallPossiblyInterruptedRunnable implements Runnable {
967	<	public void run() {
966	>	public abstract class CheckedInterruptedRunnable implements Runnable {
967	>	protected abstract void realRun() throws Throwable;
968	>
969	>	public final void run() {
970		try {
971	<	Thread.sleep(SMALL_DELAY_MS);
972	<	}
973	<	catch(Exception e) {
971	>	realRun();
972	>	threadShouldThrow("InterruptedException");
973	>	} catch (InterruptedException success) {
974	>	threadAssertFalse(Thread.interrupted());
975	>	} catch (Throwable t) {
976	>	threadUnexpectedException(t);
977		}
978		}
979		}
980
981	<	class SmallCallable implements Callable {
982	<	public Object call() {
981	>	public abstract class CheckedCallable<T> implements Callable<T> {
982	>	protected abstract T realCall() throws Throwable;
983	>
984	>	public final T call() {
985		try {
986	<	Thread.sleep(SMALL_DELAY_MS);
986	>	return realCall();
987	>	} catch (Throwable t) {
988	>	threadUnexpectedException(t);
989	>	return null;
990		}
443	–	catch(Exception e) {
444	–	threadUnexpectedException();
445	–	}
446	–	return Boolean.TRUE;
991		}
992		}
993
994	<	class SmallInterruptedRunnable implements Runnable {
995	<	public void run() {
994	>	public abstract class CheckedInterruptedCallable<T>
995	>	implements Callable<T> {
996	>	protected abstract T realCall() throws Throwable;
997	>
998	>	public final T call() {
999		try {
1000	<	Thread.sleep(SMALL_DELAY_MS);
1001	<	threadShouldThrow();
1002	<	}
1003	<	catch(InterruptedException success) {
1000	>	T result = realCall();
1001	>	threadShouldThrow("InterruptedException");
1002	>	return result;
1003	>	} catch (InterruptedException success) {
1004	>	threadAssertFalse(Thread.interrupted());
1005	>	} catch (Throwable t) {
1006	>	threadUnexpectedException(t);
1007		}
1008	+	return null;
1009		}
1010		}
1011
1012	+	public static class NoOpRunnable implements Runnable {
1013	+	public void run() {}
1014	+	}
1015
1016	<	class MediumRunnable implements Runnable {
1017	<	public void run() {
1018	<	try {
1019	<	Thread.sleep(MEDIUM_DELAY_MS);
1020	<	}
1021	<	catch(Exception e) {
1022	<	threadUnexpectedException();
1023	<	}
1016	>	public static class NoOpCallable implements Callable {
1017	>	public Object call() { return Boolean.TRUE; }
1018	>	}
1019	>
1020	>	public static final String TEST_STRING = "a test string";
1021	>
1022	>	public static class StringTask implements Callable<String> {
1023	>	public String call() { return TEST_STRING; }
1024	>	}
1025	>
1026	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1027	>	return new CheckedCallable<String>() {
1028	>	protected String realCall() {
1029	>	try {
1030	>	latch.await();
1031	>	} catch (InterruptedException quittingTime) {}
1032	>	return TEST_STRING;
1033	>	}};
1034	>	}
1035	>
1036	>	public Runnable awaiter(final CountDownLatch latch) {
1037	>	return new CheckedRunnable() {
1038	>	public void realRun() throws InterruptedException {
1039	>	await(latch);
1040	>	}};
1041	>	}
1042	>
1043	>	public void await(CountDownLatch latch) {
1044	>	try {
1045	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1046	>	} catch (Throwable t) {
1047	>	threadUnexpectedException(t);
1048		}
1049		}
1050
1051	<	class MediumInterruptedRunnable implements Runnable {
1052	<	public void run() {
1051	>	public void await(Semaphore semaphore) {
1052	>	try {
1053	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1054	>	} catch (Throwable t) {
1055	>	threadUnexpectedException(t);
1056	>	}
1057	>	}
1058	>
1059	>	//     /**
1060	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1061	>	//      */
1062	>	//     public void await(AtomicBoolean flag) {
1063	>	//         await(flag, LONG_DELAY_MS);
1064	>	//     }
1065	>
1066	>	//     /**
1067	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1068	>	//      */
1069	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1070	>	//         long startTime = System.nanoTime();
1071	>	//         while (!flag.get()) {
1072	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1073	>	//                 throw new AssertionFailedError("timed out");
1074	>	//             Thread.yield();
1075	>	//         }
1076	>	//     }
1077	>
1078	>	public static class NPETask implements Callable<String> {
1079	>	public String call() { throw new NullPointerException(); }
1080	>	}
1081	>
1082	>	public static class CallableOne implements Callable<Integer> {
1083	>	public Integer call() { return one; }
1084	>	}
1085	>
1086	>	public class ShortRunnable extends CheckedRunnable {
1087	>	protected void realRun() throws Throwable {
1088	>	delay(SHORT_DELAY_MS);
1089	>	}
1090	>	}
1091	>
1092	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1093	>	protected void realRun() throws InterruptedException {
1094	>	delay(SHORT_DELAY_MS);
1095	>	}
1096	>	}
1097	>
1098	>	public class SmallRunnable extends CheckedRunnable {
1099	>	protected void realRun() throws Throwable {
1100	>	delay(SMALL_DELAY_MS);
1101	>	}
1102	>	}
1103	>
1104	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1105	>	protected void realRun() {
1106		try {
1107	<	Thread.sleep(MEDIUM_DELAY_MS);
1108	<	threadShouldThrow();
478	<	}
479	<	catch(InterruptedException success) {
480	<	}
1107	>	delay(SMALL_DELAY_MS);
1108	>	} catch (InterruptedException ok) {}
1109		}
1110		}
1111
1112	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1113	<	public void run() {
1112	>	public class SmallCallable extends CheckedCallable {
1113	>	protected Object realCall() throws InterruptedException {
1114	>	delay(SMALL_DELAY_MS);
1115	>	return Boolean.TRUE;
1116	>	}
1117	>	}
1118	>
1119	>	public class MediumRunnable extends CheckedRunnable {
1120	>	protected void realRun() throws Throwable {
1121	>	delay(MEDIUM_DELAY_MS);
1122	>	}
1123	>	}
1124	>
1125	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1126	>	protected void realRun() throws InterruptedException {
1127	>	delay(MEDIUM_DELAY_MS);
1128	>	}
1129	>	}
1130	>
1131	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1132	>	return new CheckedRunnable() {
1133	>	protected void realRun() {
1134	>	try {
1135	>	delay(timeoutMillis);
1136	>	} catch (InterruptedException ok) {}
1137	>	}};
1138	>	}
1139	>
1140	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1141	>	protected void realRun() {
1142		try {
1143	<	Thread.sleep(MEDIUM_DELAY_MS);
1144	<	}
489	<	catch(InterruptedException success) {
490	<	}
1143	>	delay(MEDIUM_DELAY_MS);
1144	>	} catch (InterruptedException ok) {}
1145		}
1146		}
1147
1148	<	class LongPossiblyInterruptedRunnable implements Runnable {
1149	<	public void run() {
1148	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1149	>	protected void realRun() {
1150		try {
1151	<	Thread.sleep(LONG_DELAY_MS);
1152	<	}
499	<	catch(InterruptedException success) {
500	<	}
1151	>	delay(LONG_DELAY_MS);
1152	>	} catch (InterruptedException ok) {}
1153		}
1154		}
1155
1156		/**
1157		* For use as ThreadFactory in constructors
1158		*/
1159	<	static class SimpleThreadFactory implements ThreadFactory{
1160	<	public Thread newThread(Runnable r){
1159	>	public static class SimpleThreadFactory implements ThreadFactory {
1160	>	public Thread newThread(Runnable r) {
1161		return new Thread(r);
1162		}
1163		}
1164
1165	<	static class TrackedShortRunnable implements Runnable {
1166	<	volatile boolean done = false;
1165	>	public interface TrackedRunnable extends Runnable {
1166	>	boolean isDone();
1167	>	}
1168	>
1169	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1170	>	return new TrackedRunnable() {
1171	>	private volatile boolean done = false;
1172	>	public boolean isDone() { return done; }
1173	>	public void run() {
1174	>	try {
1175	>	delay(timeoutMillis);
1176	>	done = true;
1177	>	} catch (InterruptedException ok) {}
1178	>	}
1179	>	};
1180	>	}
1181	>
1182	>	public static class TrackedShortRunnable implements Runnable {
1183	>	public volatile boolean done = false;
1184		public void run() {
1185		try {
1186	<	Thread.sleep(SMALL_DELAY_MS);
1186	>	delay(SHORT_DELAY_MS);
1187		done = true;
1188	<	} catch(Exception e){
520	<	}
1188	>	} catch (InterruptedException ok) {}
1189		}
1190		}
1191
1192	<	static class TrackedMediumRunnable implements Runnable {
1193	<	volatile boolean done = false;
1192	>	public static class TrackedSmallRunnable implements Runnable {
1193	>	public volatile boolean done = false;
1194		public void run() {
1195		try {
1196	<	Thread.sleep(MEDIUM_DELAY_MS);
1196	>	delay(SMALL_DELAY_MS);
1197		done = true;
1198	<	} catch(Exception e){
531	<	}
1198	>	} catch (InterruptedException ok) {}
1199		}
1200		}
1201
1202	<	static class TrackedLongRunnable implements Runnable {
1203	<	volatile boolean done = false;
1202	>	public static class TrackedMediumRunnable implements Runnable {
1203	>	public volatile boolean done = false;
1204		public void run() {
1205		try {
1206	<	Thread.sleep(LONG_DELAY_MS);
1206	>	delay(MEDIUM_DELAY_MS);
1207		done = true;
1208	<	} catch(Exception e){
1209	<	}
1208	>	} catch (InterruptedException ok) {}
1209	>	}
1210	>	}
1211	>
1212	>	public static class TrackedLongRunnable implements Runnable {
1213	>	public volatile boolean done = false;
1214	>	public void run() {
1215	>	try {
1216	>	delay(LONG_DELAY_MS);
1217	>	done = true;
1218	>	} catch (InterruptedException ok) {}
1219		}
1220		}
1221
1222	<	static class TrackedNoOpRunnable implements Runnable {
1223	<	volatile boolean done = false;
1222	>	public static class TrackedNoOpRunnable implements Runnable {
1223	>	public volatile boolean done = false;
1224		public void run() {
1225		done = true;
1226		}
1227		}
1228
1229	<	static class TrackedCallable implements Callable {
1230	<	volatile boolean done = false;
1229	>	public static class TrackedCallable implements Callable {
1230	>	public volatile boolean done = false;
1231		public Object call() {
1232		try {
1233	<	Thread.sleep(SMALL_DELAY_MS);
1233	>	delay(SMALL_DELAY_MS);
1234		done = true;
1235	<	} catch(Exception e){
560	<	}
1235	>	} catch (InterruptedException ok) {}
1236		return Boolean.TRUE;
1237		}
1238		}
1239
1240	+	/**
1241	+	* Analog of CheckedRunnable for RecursiveAction
1242	+	*/
1243	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1244	+	protected abstract void realCompute() throws Throwable;
1245	+
1246	+	@Override protected final void compute() {
1247	+	try {
1248	+	realCompute();
1249	+	} catch (Throwable t) {
1250	+	threadUnexpectedException(t);
1251	+	}
1252	+	}
1253	+	}
1254	+
1255	+	/**
1256	+	* Analog of CheckedCallable for RecursiveTask
1257	+	*/
1258	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1259	+	protected abstract T realCompute() throws Throwable;
1260	+
1261	+	@Override protected final T compute() {
1262	+	try {
1263	+	return realCompute();
1264	+	} catch (Throwable t) {
1265	+	threadUnexpectedException(t);
1266	+	return null;
1267	+	}
1268	+	}
1269	+	}
1270
1271		/**
1272		* For use as RejectedExecutionHandler in constructors
1273		*/
1274	<	static class NoOpREHandler implements RejectedExecutionHandler{
1275	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1274	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1275	>	public void rejectedExecution(Runnable r,
1276	>	ThreadPoolExecutor executor) {}
1277		}
1278
1279	+	/**
1280	+	* A CyclicBarrier that uses timed await and fails with
1281	+	* AssertionFailedErrors instead of throwing checked exceptions.
1282	+	*/
1283	+	public class CheckedBarrier extends CyclicBarrier {
1284	+	public CheckedBarrier(int parties) { super(parties); }
1285
1286	+	public int await() {
1287	+	try {
1288	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1289	+	} catch (TimeoutException e) {
1290	+	throw new AssertionFailedError("timed out");
1291	+	} catch (Exception e) {
1292	+	AssertionFailedError afe =
1293	+	new AssertionFailedError("Unexpected exception: " + e);
1294	+	afe.initCause(e);
1295	+	throw afe;
1296	+	}
1297	+	}
1298	+	}
1299	+
1300	+	void checkEmpty(BlockingQueue q) {
1301	+	try {
1302	+	assertTrue(q.isEmpty());
1303	+	assertEquals(0, q.size());
1304	+	assertNull(q.peek());
1305	+	assertNull(q.poll());
1306	+	assertNull(q.poll(0, MILLISECONDS));
1307	+	assertEquals(q.toString(), "[]");
1308	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1309	+	assertFalse(q.iterator().hasNext());
1310	+	try {
1311	+	q.element();
1312	+	shouldThrow();
1313	+	} catch (NoSuchElementException success) {}
1314	+	try {
1315	+	q.iterator().next();
1316	+	shouldThrow();
1317	+	} catch (NoSuchElementException success) {}
1318	+	try {
1319	+	q.remove();
1320	+	shouldThrow();
1321	+	} catch (NoSuchElementException success) {}
1322	+	} catch (InterruptedException ie) {
1323	+	threadUnexpectedException(ie);
1324	+	}
1325	+	}
1326	+
1327	+	void assertSerialEquals(Object x, Object y) {
1328	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1329	+	}
1330	+
1331	+	void assertNotSerialEquals(Object x, Object y) {
1332	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1333	+	}
1334	+
1335	+	byte[] serialBytes(Object o) {
1336	+	try {
1337	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1338	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1339	+	oos.writeObject(o);
1340	+	oos.flush();
1341	+	oos.close();
1342	+	return bos.toByteArray();
1343	+	} catch (Throwable t) {
1344	+	threadUnexpectedException(t);
1345	+	return new byte[0];
1346	+	}
1347	+	}
1348	+
1349	+	@SuppressWarnings("unchecked")
1350	+	<T> T serialClone(T o) {
1351	+	try {
1352	+	ObjectInputStream ois = new ObjectInputStream
1353	+	(new ByteArrayInputStream(serialBytes(o)));
1354	+	T clone = (T) ois.readObject();
1355	+	assertSame(o.getClass(), clone.getClass());
1356	+	return clone;
1357	+	} catch (Throwable t) {
1358	+	threadUnexpectedException(t);
1359	+	return null;
1360	+	}
1361	+	}
1362	+
1363	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1364	+	Runnable... throwingActions) {
1365	+	for (Runnable throwingAction : throwingActions) {
1366	+	boolean threw = false;
1367	+	try { throwingAction.run(); }
1368	+	catch (Throwable t) {
1369	+	threw = true;
1370	+	if (!expectedExceptionClass.isInstance(t)) {
1371	+	AssertionFailedError afe =
1372	+	new AssertionFailedError
1373	+	("Expected " + expectedExceptionClass.getName() +
1374	+	", got " + t.getClass().getName());
1375	+	afe.initCause(t);
1376	+	threadUnexpectedException(afe);
1377	+	}
1378	+	}
1379	+	if (!threw)
1380	+	shouldThrow(expectedExceptionClass.getName());
1381	+	}
1382	+	}
1383		}

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