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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.40 by jsr166, Fri Nov 20 00:58:01 2009 UTC vs.
Revision 1.111 by dl, Sun Jul 21 22:24:18 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.util.concurrent.atomic.AtomicBoolean;
26	+	import java.util.concurrent.atomic.AtomicReference;
27		import static java.util.concurrent.TimeUnit.MILLISECONDS;
28	<	import java.io.*;
29	<	import java.security.*;
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 26 | 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 48 | 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 81 | 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
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	<	int iters = 1;
165	<	if (args.length > 0)
166	<	iters = Integer.parseInt(args[0]);
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(ForkJoinPoolTest.class));
194	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
195	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
196	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
197	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
198	<	suite.addTest(new TestSuite(PhaserTest.class));
199	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
200	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
201	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
202	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
203	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
204	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
205	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
206	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
207	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
208	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
209	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
210	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
211	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
212	<	suite.addTest(new TestSuite(AtomicLongTest.class));
213	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
214	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
215	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
216	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
217	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
218	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
219	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
220	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
221	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
222	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
223	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
224	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
225	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
226	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
227	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
228	<	suite.addTest(new TestSuite(DelayQueueTest.class));
229	<	suite.addTest(new TestSuite(EntryTest.class));
230	<	suite.addTest(new TestSuite(ExchangerTest.class));
231	<	suite.addTest(new TestSuite(ExecutorsTest.class));
232	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
233	<	suite.addTest(new TestSuite(FutureTaskTest.class));
234	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
235	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
236	<	suite.addTest(new TestSuite(LinkedListTest.class));
237	<	suite.addTest(new TestSuite(LockSupportTest.class));
238	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
239	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
240	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
241	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
242	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
243	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
244	<	suite.addTest(new TestSuite(SemaphoreTest.class));
245	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
246	<	suite.addTest(new TestSuite(SystemTest.class));
247	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
248	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
249	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
250	<	suite.addTest(new TestSuite(ThreadTest.class));
251	<	suite.addTest(new TestSuite(TimeUnitTest.class));
252	<	suite.addTest(new TestSuite(TreeMapTest.class));
253	<	suite.addTest(new TestSuite(TreeSetTest.class));
254	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
255	<	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	>	"CompletableFutureTest",
298	>	"ConcurrentHashMap8Test",
299	>	"CountedCompleterTest",
300	>	"DoubleAccumulatorTest",
301	>	"DoubleAdderTest",
302	>	"ForkJoinPool8Test",
303	>	"ForkJoinTask8Test",
304	>	"LongAccumulatorTest",
305	>	"LongAdderTest",
306	>	"SplittableRandomTest",
307	>	"StampedLockTest",
308	>	};
309	>	addNamedTestClasses(suite, java8TestClassNames);
310	>	}
311
312		return suite;
313		}
314
315	+	// Delays for timing-dependent tests, in milliseconds.
316
317		public static long SHORT_DELAY_MS;
318		public static long SMALL_DELAY_MS;
319		public static long MEDIUM_DELAY_MS;
320		public static long LONG_DELAY_MS;
321
185	–
322		/**
323		* Returns the shortest timed delay. This could
324		* be reimplemented to use for example a Property.
#	Line 191 | Line 327 | public class JSR166TestCase extends Test
327		return 50;
328		}
329
194	–
330		/**
331		* Sets delays as multiples of SHORT_DELAY.
332		*/
333	<	protected  void setDelays() {
333	>	protected void setDelays() {
334		SHORT_DELAY_MS = getShortDelay();
335	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
335	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
336		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
337	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
337	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
338		}
339
340		/**
341	<	* Flag set true if any threadAssert methods fail
341	>	* Returns a timeout in milliseconds to be used in tests that
342	>	* verify that operations block or time out.
343		*/
344	<	volatile boolean threadFailed;
344	>	long timeoutMillis() {
345	>	return SHORT_DELAY_MS / 4;
346	>	}
347
348		/**
349	<	* Initializes test to indicate that no thread assertions have failed
349	>	* Returns a new Date instance representing a time delayMillis
350	>	* milliseconds in the future.
351		*/
352	+	Date delayedDate(long delayMillis) {
353	+	return new Date(System.currentTimeMillis() + delayMillis);
354	+	}
355	+
356	+	/**
357	+	* The first exception encountered if any threadAssertXXX method fails.
358	+	*/
359	+	private final AtomicReference<Throwable> threadFailure
360	+	= new AtomicReference<Throwable>(null);
361	+
362	+	/**
363	+	* Records an exception so that it can be rethrown later in the test
364	+	* harness thread, triggering a test case failure.  Only the first
365	+	* failure is recorded; subsequent calls to this method from within
366	+	* the same test have no effect.
367	+	*/
368	+	public void threadRecordFailure(Throwable t) {
369	+	threadFailure.compareAndSet(null, t);
370	+	}
371	+
372		public void setUp() {
373		setDelays();
215	–	threadFailed = false;
374		}
375
376		/**
377	<	* Triggers test case failure if any thread assertions have failed
377	>	* Extra checks that get done for all test cases.
378	>	*
379	>	* Triggers test case failure if any thread assertions have failed,
380	>	* by rethrowing, in the test harness thread, any exception recorded
381	>	* earlier by threadRecordFailure.
382	>	*
383	>	* Triggers test case failure if interrupt status is set in the main thread.
384	>	*/
385	>	public void tearDown() throws Exception {
386	>	Throwable t = threadFailure.getAndSet(null);
387	>	if (t != null) {
388	>	if (t instanceof Error)
389	>	throw (Error) t;
390	>	else if (t instanceof RuntimeException)
391	>	throw (RuntimeException) t;
392	>	else if (t instanceof Exception)
393	>	throw (Exception) t;
394	>	else {
395	>	AssertionFailedError afe =
396	>	new AssertionFailedError(t.toString());
397	>	afe.initCause(t);
398	>	throw afe;
399	>	}
400	>	}
401	>
402	>	if (Thread.interrupted())
403	>	throw new AssertionFailedError("interrupt status set in main thread");
404	>
405	>	checkForkJoinPoolThreadLeaks();
406	>	}
407	>
408	>	/**
409	>	* Find missing try { ... } finally { joinPool(e); }
410		*/
411	<	public void tearDown() {
412	<	assertFalse(threadFailed);
411	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
412	>	Thread[] survivors = new Thread[5];
413	>	int count = Thread.enumerate(survivors);
414	>	for (int i = 0; i < count; i++) {
415	>	Thread thread = survivors[i];
416	>	String name = thread.getName();
417	>	if (name.startsWith("ForkJoinPool-")) {
418	>	// give thread some time to terminate
419	>	thread.join(LONG_DELAY_MS);
420	>	if (!thread.isAlive()) continue;
421	>	thread.stop();
422	>	throw new AssertionFailedError
423	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
424	>	toString(), name));
425	>	}
426	>	}
427		}
428
429		/**
430	<	* Fail, also setting status to indicate current testcase should fail
430	>	* Just like fail(reason), but additionally recording (using
431	>	* threadRecordFailure) any AssertionFailedError thrown, so that
432	>	* the current testcase will fail.
433		*/
434		public void threadFail(String reason) {
435	<	threadFailed = true;
436	<	fail(reason);
435	>	try {
436	>	fail(reason);
437	>	} catch (AssertionFailedError t) {
438	>	threadRecordFailure(t);
439	>	fail(reason);
440	>	}
441		}
442
443		/**
444	<	* If expression not true, set status to indicate current testcase
445	<	* should fail
444	>	* Just like assertTrue(b), but additionally recording (using
445	>	* threadRecordFailure) any AssertionFailedError thrown, so that
446	>	* the current testcase will fail.
447		*/
448		public void threadAssertTrue(boolean b) {
449	<	if (!b) {
239	<	threadFailed = true;
449	>	try {
450		assertTrue(b);
451	+	} catch (AssertionFailedError t) {
452	+	threadRecordFailure(t);
453	+	throw t;
454		}
455		}
456
457		/**
458	<	* If expression not false, set status to indicate current testcase
459	<	* should fail
458	>	* Just like assertFalse(b), but additionally recording (using
459	>	* threadRecordFailure) any AssertionFailedError thrown, so that
460	>	* the current testcase will fail.
461		*/
462		public void threadAssertFalse(boolean b) {
463	<	if (b) {
250	<	threadFailed = true;
463	>	try {
464		assertFalse(b);
465	+	} catch (AssertionFailedError t) {
466	+	threadRecordFailure(t);
467	+	throw t;
468		}
469		}
470
471		/**
472	<	* If argument not null, set status to indicate current testcase
473	<	* should fail
472	>	* Just like assertNull(x), but additionally recording (using
473	>	* threadRecordFailure) any AssertionFailedError thrown, so that
474	>	* the current testcase will fail.
475		*/
476		public void threadAssertNull(Object x) {
477	<	if (x != null) {
261	<	threadFailed = true;
477	>	try {
478		assertNull(x);
479	+	} catch (AssertionFailedError t) {
480	+	threadRecordFailure(t);
481	+	throw t;
482		}
483		}
484
485		/**
486	<	* If arguments not equal, set status to indicate current testcase
487	<	* should fail
486	>	* Just like assertEquals(x, y), but additionally recording (using
487	>	* threadRecordFailure) any AssertionFailedError thrown, so that
488	>	* the current testcase will fail.
489		*/
490		public void threadAssertEquals(long x, long y) {
491	<	if (x != y) {
272	<	threadFailed = true;
491	>	try {
492		assertEquals(x, y);
493	+	} catch (AssertionFailedError t) {
494	+	threadRecordFailure(t);
495	+	throw t;
496		}
497		}
498
499		/**
500	<	* If arguments not equal, set status to indicate current testcase
501	<	* should fail
500	>	* Just like assertEquals(x, y), but additionally recording (using
501	>	* threadRecordFailure) any AssertionFailedError thrown, so that
502	>	* the current testcase will fail.
503		*/
504		public void threadAssertEquals(Object x, Object y) {
505	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
505	>	try {
506		assertEquals(x, y);
507	+	} catch (AssertionFailedError t) {
508	+	threadRecordFailure(t);
509	+	throw t;
510	+	} catch (Throwable t) {
511	+	threadUnexpectedException(t);
512	+	}
513	+	}
514	+
515	+	/**
516	+	* Just like assertSame(x, y), but additionally recording (using
517	+	* threadRecordFailure) any AssertionFailedError thrown, so that
518	+	* the current testcase will fail.
519	+	*/
520	+	public void threadAssertSame(Object x, Object y) {
521	+	try {
522	+	assertSame(x, y);
523	+	} catch (AssertionFailedError t) {
524	+	threadRecordFailure(t);
525	+	throw t;
526		}
527		}
528
529		/**
530	<	* threadFail with message "should throw exception"
530	>	* Calls threadFail with message "should throw exception".
531		*/
532		public void threadShouldThrow() {
533	<	threadFailed = true;
293	<	fail("should throw exception");
533	>	threadFail("should throw exception");
534		}
535
536		/**
537	<	* threadFail with message "should throw" + exceptionName
537	>	* Calls threadFail with message "should throw" + exceptionName.
538		*/
539		public void threadShouldThrow(String exceptionName) {
540	<	threadFailed = true;
301	<	fail("should throw " + exceptionName);
540	>	threadFail("should throw " + exceptionName);
541		}
542
543		/**
544	<	* threadFail with message "Unexpected exception"
544	>	* Records the given exception using {@link #threadRecordFailure},
545	>	* then rethrows the exception, wrapping it in an
546	>	* AssertionFailedError if necessary.
547		*/
548	<	public void threadUnexpectedException() {
549	<	threadFailed = true;
550	<	fail("Unexpected exception");
548	>	public void threadUnexpectedException(Throwable t) {
549	>	threadRecordFailure(t);
550	>	t.printStackTrace();
551	>	if (t instanceof RuntimeException)
552	>	throw (RuntimeException) t;
553	>	else if (t instanceof Error)
554	>	throw (Error) t;
555	>	else {
556	>	AssertionFailedError afe =
557	>	new AssertionFailedError("unexpected exception: " + t);
558	>	afe.initCause(t);
559	>	throw afe;
560	>	}
561		}
562
563		/**
564	<	* threadFail with message "Unexpected exception", with argument
564	>	* Delays, via Thread.sleep, for the given millisecond delay, but
565	>	* if the sleep is shorter than specified, may re-sleep or yield
566	>	* until time elapses.
567		*/
568	<	public void threadUnexpectedException(Throwable ex) {
569	<	threadFailed = true;
570	<	ex.printStackTrace();
571	<	fail("Unexpected exception: " + ex);
568	>	static void delay(long millis) throws InterruptedException {
569	>	long startTime = System.nanoTime();
570	>	long ns = millis * 1000 * 1000;
571	>	for (;;) {
572	>	if (millis > 0L)
573	>	Thread.sleep(millis);
574	>	else // too short to sleep
575	>	Thread.yield();
576	>	long d = ns - (System.nanoTime() - startTime);
577	>	if (d > 0L)
578	>	millis = d / (1000 * 1000);
579	>	else
580	>	break;
581	>	}
582		}
583
584		/**
585	<	* Wait out termination of a thread pool or fail doing so
585	>	* Waits out termination of a thread pool or fails doing so.
586		*/
587	<	public void joinPool(ExecutorService exec) {
587	>	void joinPool(ExecutorService exec) {
588		try {
589		exec.shutdown();
590	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
590	>	assertTrue("ExecutorService did not terminate in a timely manner",
591	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
592		} catch (SecurityException ok) {
593		// Allowed in case test doesn't have privs
594		} catch (InterruptedException ie) {
595	<	fail("Unexpected exception");
595	>	fail("Unexpected InterruptedException");
596		}
597		}
598
599	+	/**
600	+	* A debugging tool to print all stack traces, as jstack does.
601	+	*/
602	+	static void printAllStackTraces() {
603	+	for (ThreadInfo info :
604	+	ManagementFactory.getThreadMXBean()
605	+	.dumpAllThreads(true, true))
606	+	System.err.print(info);
607	+	}
608
609		/**
610	<	* fail with message "should throw exception"
610	>	* Checks that thread does not terminate within the default
611	>	* millisecond delay of {@code timeoutMillis()}.
612		*/
613	<	public void shouldThrow() {
614	<	fail("Should throw exception");
613	>	void assertThreadStaysAlive(Thread thread) {
614	>	assertThreadStaysAlive(thread, timeoutMillis());
615		}
616
617		/**
618	<	* fail with message "should throw " + exceptionName
618	>	* Checks that thread does not terminate within the given millisecond delay.
619		*/
620	<	public void shouldThrow(String exceptionName) {
621	<	fail("Should throw " + exceptionName);
620	>	void assertThreadStaysAlive(Thread thread, long millis) {
621	>	try {
622	>	// No need to optimize the failing case via Thread.join.
623	>	delay(millis);
624	>	assertTrue(thread.isAlive());
625	>	} catch (InterruptedException ie) {
626	>	fail("Unexpected InterruptedException");
627	>	}
628		}
629
630		/**
631	<	* fail with message "Unexpected exception"
631	>	* Checks that the threads do not terminate within the default
632	>	* millisecond delay of {@code timeoutMillis()}.
633		*/
634	<	public void unexpectedException() {
635	<	fail("Unexpected exception");
634	>	void assertThreadsStayAlive(Thread... threads) {
635	>	assertThreadsStayAlive(timeoutMillis(), threads);
636		}
637
638		/**
639	<	* fail with message "Unexpected exception", with argument
639	>	* Checks that the threads do not terminate within the given millisecond delay.
640		*/
641	<	public void unexpectedException(Throwable ex) {
642	<	ex.printStackTrace();
643	<	fail("Unexpected exception: " + ex);
641	>	void assertThreadsStayAlive(long millis, Thread... threads) {
642	>	try {
643	>	// No need to optimize the failing case via Thread.join.
644	>	delay(millis);
645	>	for (Thread thread : threads)
646	>	assertTrue(thread.isAlive());
647	>	} catch (InterruptedException ie) {
648	>	fail("Unexpected InterruptedException");
649	>	}
650		}
651
652	+	/**
653	+	* Checks that future.get times out, with the default timeout of
654	+	* {@code timeoutMillis()}.
655	+	*/
656	+	void assertFutureTimesOut(Future future) {
657	+	assertFutureTimesOut(future, timeoutMillis());
658	+	}
659	+
660	+	/**
661	+	* Checks that future.get times out, with the given millisecond timeout.
662	+	*/
663	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
664	+	long startTime = System.nanoTime();
665	+	try {
666	+	future.get(timeoutMillis, MILLISECONDS);
667	+	shouldThrow();
668	+	} catch (TimeoutException success) {
669	+	} catch (Exception e) {
670	+	threadUnexpectedException(e);
671	+	} finally { future.cancel(true); }
672	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
673	+	}
674	+
675	+	/**
676	+	* Fails with message "should throw exception".
677	+	*/
678	+	public void shouldThrow() {
679	+	fail("Should throw exception");
680	+	}
681	+
682	+	/**
683	+	* Fails with message "should throw " + exceptionName.
684	+	*/
685	+	public void shouldThrow(String exceptionName) {
686	+	fail("Should throw " + exceptionName);
687	+	}
688
689		/**
690		* The number of elements to place in collections, arrays, etc.
691		*/
692	<	static final int SIZE = 20;
692	>	public static final int SIZE = 20;
693
694		// Some convenient Integer constants
695
696	<	static final Integer zero = new Integer(0);
697	<	static final Integer one = new Integer(1);
698	<	static final Integer two = new Integer(2);
699	<	static final Integer three  = new Integer(3);
700	<	static final Integer four  = new Integer(4);
701	<	static final Integer five  = new Integer(5);
702	<	static final Integer six = new Integer(6);
703	<	static final Integer seven = new Integer(7);
704	<	static final Integer eight = new Integer(8);
705	<	static final Integer nine = new Integer(9);
706	<	static final Integer m1  = new Integer(-1);
707	<	static final Integer m2  = new Integer(-2);
708	<	static final Integer m3  = new Integer(-3);
709	<	static final Integer m4 = new Integer(-4);
710	<	static final Integer m5 = new Integer(-5);
711	<	static final Integer m6 = new Integer(-6);
712	<	static final Integer m10 = new Integer(-10);
696	>	public static final Integer zero  = new Integer(0);
697	>	public static final Integer one   = new Integer(1);
698	>	public static final Integer two   = new Integer(2);
699	>	public static final Integer three = new Integer(3);
700	>	public static final Integer four  = new Integer(4);
701	>	public static final Integer five  = new Integer(5);
702	>	public static final Integer six   = new Integer(6);
703	>	public static final Integer seven = new Integer(7);
704	>	public static final Integer eight = new Integer(8);
705	>	public static final Integer nine  = new Integer(9);
706	>	public static final Integer m1  = new Integer(-1);
707	>	public static final Integer m2  = new Integer(-2);
708	>	public static final Integer m3  = new Integer(-3);
709	>	public static final Integer m4  = new Integer(-4);
710	>	public static final Integer m5  = new Integer(-5);
711	>	public static final Integer m6  = new Integer(-6);
712	>	public static final Integer m10 = new Integer(-10);
713	>
714	>	/**
715	>	* Runs Runnable r with a security policy that permits precisely
716	>	* the specified permissions.  If there is no current security
717	>	* manager, the runnable is run twice, both with and without a
718	>	* security manager.  We require that any security manager permit
719	>	* getPolicy/setPolicy.
720	>	*/
721	>	public void runWithPermissions(Runnable r, Permission... permissions) {
722	>	SecurityManager sm = System.getSecurityManager();
723	>	if (sm == null) {
724	>	r.run();
725	>	}
726	>	runWithSecurityManagerWithPermissions(r, permissions);
727	>	}
728
729	+	/**
730	+	* Runs Runnable r with a security policy that permits precisely
731	+	* the specified permissions.  If there is no current security
732	+	* manager, a temporary one is set for the duration of the
733	+	* Runnable.  We require that any security manager permit
734	+	* getPolicy/setPolicy.
735	+	*/
736	+	public void runWithSecurityManagerWithPermissions(Runnable r,
737	+	Permission... permissions) {
738	+	SecurityManager sm = System.getSecurityManager();
739	+	if (sm == null) {
740	+	Policy savedPolicy = Policy.getPolicy();
741	+	try {
742	+	Policy.setPolicy(permissivePolicy());
743	+	System.setSecurityManager(new SecurityManager());
744	+	runWithSecurityManagerWithPermissions(r, permissions);
745	+	} finally {
746	+	System.setSecurityManager(null);
747	+	Policy.setPolicy(savedPolicy);
748	+	}
749	+	} else {
750	+	Policy savedPolicy = Policy.getPolicy();
751	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
752	+	Policy.setPolicy(policy);
753	+
754	+	try {
755	+	r.run();
756	+	} finally {
757	+	policy.addPermission(new SecurityPermission("setPolicy"));
758	+	Policy.setPolicy(savedPolicy);
759	+	}
760	+	}
761	+	}
762	+
763	+	/**
764	+	* Runs a runnable without any permissions.
765	+	*/
766	+	public void runWithoutPermissions(Runnable r) {
767	+	runWithPermissions(r);
768	+	}
769
770		/**
771		* A security policy where new permissions can be dynamically added
772		* or all cleared.
773		*/
774	<	static class AdjustablePolicy extends java.security.Policy {
774	>	public static class AdjustablePolicy extends java.security.Policy {
775		Permissions perms = new Permissions();
776	<	AdjustablePolicy() { }
776	>	AdjustablePolicy(Permission... permissions) {
777	>	for (Permission permission : permissions)
778	>	perms.add(permission);
779	>	}
780		void addPermission(Permission perm) { perms.add(perm); }
781		void clearPermissions() { perms = new Permissions(); }
782	<	public PermissionCollection getPermissions(CodeSource cs) {
783	<	return perms;
784	<	}
785	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
786	<	return perms;
787	<	}
788	<	public boolean implies(ProtectionDomain pd, Permission p) {
789	<	return perms.implies(p);
790	<	}
791	<	public void refresh() {}
782	>	public PermissionCollection getPermissions(CodeSource cs) {
783	>	return perms;
784	>	}
785	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
786	>	return perms;
787	>	}
788	>	public boolean implies(ProtectionDomain pd, Permission p) {
789	>	return perms.implies(p);
790	>	}
791	>	public void refresh() {}
792	>	public String toString() {
793	>	List<Permission> ps = new ArrayList<Permission>();
794	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
795	>	ps.add(e.nextElement());
796	>	return "AdjustablePolicy with permissions " + ps;
797	>	}
798	>	}
799	>
800	>	/**
801	>	* Returns a policy containing all the permissions we ever need.
802	>	*/
803	>	public static Policy permissivePolicy() {
804	>	return new AdjustablePolicy
805	>	// Permissions j.u.c. needs directly
806	>	(new RuntimePermission("modifyThread"),
807	>	new RuntimePermission("getClassLoader"),
808	>	new RuntimePermission("setContextClassLoader"),
809	>	// Permissions needed to change permissions!
810	>	new SecurityPermission("getPolicy"),
811	>	new SecurityPermission("setPolicy"),
812	>	new RuntimePermission("setSecurityManager"),
813	>	// Permissions needed by the junit test harness
814	>	new RuntimePermission("accessDeclaredMembers"),
815	>	new PropertyPermission("*", "read"),
816	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
817		}
818
819		/**
820	<	* Sleep until the timeout has elapsed, or interrupted.
821	<	* Does <em>NOT</em> throw InterruptedException.
820	>	* Sleeps until the given time has elapsed.
821	>	* Throws AssertionFailedError if interrupted.
822		*/
823	<	void sleepTillInterrupted(long timeoutMillis) {
823	>	void sleep(long millis) {
824		try {
825	<	Thread.sleep(timeoutMillis);
826	<	} catch (InterruptedException wakeup) {
825	>	delay(millis);
826	>	} catch (InterruptedException ie) {
827	>	AssertionFailedError afe =
828	>	new AssertionFailedError("Unexpected InterruptedException");
829	>	afe.initCause(ie);
830	>	throw afe;
831		}
832		}
833
834		/**
835	<	* Returns a new started Thread running the given runnable.
835	>	* Spin-waits up to the specified number of milliseconds for the given
836	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
837	>	*/
838	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
839	>	long startTime = System.nanoTime();
840	>	for (;;) {
841	>	Thread.State s = thread.getState();
842	>	if (s == Thread.State.BLOCKED ||
843	>	s == Thread.State.WAITING ||
844	>	s == Thread.State.TIMED_WAITING)
845	>	return;
846	>	else if (s == Thread.State.TERMINATED)
847	>	fail("Unexpected thread termination");
848	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
849	>	threadAssertTrue(thread.isAlive());
850	>	return;
851	>	}
852	>	Thread.yield();
853	>	}
854	>	}
855	>
856	>	/**
857	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
858	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
859	>	*/
860	>	void waitForThreadToEnterWaitState(Thread thread) {
861	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
862	>	}
863	>
864	>	/**
865	>	* Returns the number of milliseconds since time given by
866	>	* startNanoTime, which must have been previously returned from a
867	>	* call to {@link System.nanoTime()}.
868	>	*/
869	>	long millisElapsedSince(long startNanoTime) {
870	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
871	>	}
872	>
873	>	/**
874	>	* Returns a new started daemon Thread running the given runnable.
875		*/
876		Thread newStartedThread(Runnable runnable) {
877		Thread t = new Thread(runnable);
878	+	t.setDaemon(true);
879		t.start();
880		return t;
881		}
882
883	+	/**
884	+	* Waits for the specified time (in milliseconds) for the thread
885	+	* to terminate (using {@link Thread#join(long)}), else interrupts
886	+	* the thread (in the hope that it may terminate later) and fails.
887	+	*/
888	+	void awaitTermination(Thread t, long timeoutMillis) {
889	+	try {
890	+	t.join(timeoutMillis);
891	+	} catch (InterruptedException ie) {
892	+	threadUnexpectedException(ie);
893	+	} finally {
894	+	if (t.getState() != Thread.State.TERMINATED) {
895	+	t.interrupt();
896	+	fail("Test timed out");
897	+	}
898	+	}
899	+	}
900	+
901	+	/**
902	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
903	+	* terminate (using {@link Thread#join(long)}), else interrupts
904	+	* the thread (in the hope that it may terminate later) and fails.
905	+	*/
906	+	void awaitTermination(Thread t) {
907	+	awaitTermination(t, LONG_DELAY_MS);
908	+	}
909	+
910		// Some convenient Runnable classes
911
912	<	abstract class CheckedRunnable implements Runnable {
913	<	abstract void realRun() throws Throwable;
912	>	public abstract class CheckedRunnable implements Runnable {
913	>	protected abstract void realRun() throws Throwable;
914
915		public final void run() {
916		try {
#	Line 444 | Line 921 | public class JSR166TestCase extends Test
921		}
922		}
923
924	<	abstract class RunnableShouldThrow implements Runnable {
925	<	abstract void realRun() throws Throwable;
924	>	public abstract class RunnableShouldThrow implements Runnable {
925	>	protected abstract void realRun() throws Throwable;
926
927		final Class<?> exceptionClass;
928
#	Line 457 | Line 934 | public class JSR166TestCase extends Test
934		try {
935		realRun();
936		threadShouldThrow(exceptionClass.getSimpleName());
460	–	} catch (InterruptedException success) {
937		} catch (Throwable t) {
938		if (! exceptionClass.isInstance(t))
939		threadUnexpectedException(t);
#	Line 465 | Line 941 | public class JSR166TestCase extends Test
941		}
942		}
943
944	<	abstract class ThreadShouldThrow extends Thread {
945	<	abstract void realRun() throws Throwable;
944	>	public abstract class ThreadShouldThrow extends Thread {
945	>	protected abstract void realRun() throws Throwable;
946
947		final Class<?> exceptionClass;
948
#	Line 478 | Line 954 | public class JSR166TestCase extends Test
954		try {
955		realRun();
956		threadShouldThrow(exceptionClass.getSimpleName());
481	–	} catch (InterruptedException success) {
957		} catch (Throwable t) {
958		if (! exceptionClass.isInstance(t))
959		threadUnexpectedException(t);
#	Line 486 | Line 961 | public class JSR166TestCase extends Test
961		}
962		}
963
964	<	abstract class CheckedInterruptedRunnable implements Runnable {
965	<	abstract void realRun() throws Throwable;
964	>	public abstract class CheckedInterruptedRunnable implements Runnable {
965	>	protected abstract void realRun() throws Throwable;
966
967		public final void run() {
968		try {
969		realRun();
970		threadShouldThrow("InterruptedException");
971		} catch (InterruptedException success) {
972	+	threadAssertFalse(Thread.interrupted());
973		} catch (Throwable t) {
974		threadUnexpectedException(t);
975		}
976		}
977		}
978
979	<	abstract class CheckedCallable<T> implements Callable<T> {
980	<	abstract T realCall() throws Throwable;
979	>	public abstract class CheckedCallable<T> implements Callable<T> {
980	>	protected abstract T realCall() throws Throwable;
981
982		public final T call() {
983		try {
984		return realCall();
985		} catch (Throwable t) {
986		threadUnexpectedException(t);
987	+	return null;
988		}
512	–	return null;
989		}
990		}
991
992	<	abstract class CheckedInterruptedCallable<T> implements Callable<T> {
993	<	abstract T realCall() throws Throwable;
992	>	public abstract class CheckedInterruptedCallable<T>
993	>	implements Callable<T> {
994	>	protected abstract T realCall() throws Throwable;
995
996		public final T call() {
997		try {
#	Line 522 | Line 999 | public class JSR166TestCase extends Test
999		threadShouldThrow("InterruptedException");
1000		return result;
1001		} catch (InterruptedException success) {
1002	+	threadAssertFalse(Thread.interrupted());
1003		} catch (Throwable t) {
1004		threadUnexpectedException(t);
1005		}
#	Line 529 | Line 1007 | public class JSR166TestCase extends Test
1007		}
1008		}
1009
1010	<	static class NoOpRunnable implements Runnable {
1010	>	public static class NoOpRunnable implements Runnable {
1011		public void run() {}
1012		}
1013
1014	<	static class NoOpCallable implements Callable {
1014	>	public static class NoOpCallable implements Callable {
1015		public Object call() { return Boolean.TRUE; }
1016		}
1017
1018	<	static final String TEST_STRING = "a test string";
1018	>	public static final String TEST_STRING = "a test string";
1019
1020	<	static class StringTask implements Callable<String> {
1020	>	public static class StringTask implements Callable<String> {
1021		public String call() { return TEST_STRING; }
1022		}
1023
1024	<	static class NPETask implements Callable<String> {
1024	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1025	>	return new CheckedCallable<String>() {
1026	>	protected String realCall() {
1027	>	try {
1028	>	latch.await();
1029	>	} catch (InterruptedException quittingTime) {}
1030	>	return TEST_STRING;
1031	>	}};
1032	>	}
1033	>
1034	>	public Runnable awaiter(final CountDownLatch latch) {
1035	>	return new CheckedRunnable() {
1036	>	public void realRun() throws InterruptedException {
1037	>	await(latch);
1038	>	}};
1039	>	}
1040	>
1041	>	public void await(CountDownLatch latch) {
1042	>	try {
1043	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1044	>	} catch (Throwable t) {
1045	>	threadUnexpectedException(t);
1046	>	}
1047	>	}
1048	>
1049	>	public void await(Semaphore semaphore) {
1050	>	try {
1051	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1052	>	} catch (Throwable t) {
1053	>	threadUnexpectedException(t);
1054	>	}
1055	>	}
1056	>
1057	>	//     /**
1058	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1059	>	//      */
1060	>	//     public void await(AtomicBoolean flag) {
1061	>	//         await(flag, LONG_DELAY_MS);
1062	>	//     }
1063	>
1064	>	//     /**
1065	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1066	>	//      */
1067	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1068	>	//         long startTime = System.nanoTime();
1069	>	//         while (!flag.get()) {
1070	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1071	>	//                 throw new AssertionFailedError("timed out");
1072	>	//             Thread.yield();
1073	>	//         }
1074	>	//     }
1075	>
1076	>	public static class NPETask implements Callable<String> {
1077		public String call() { throw new NullPointerException(); }
1078		}
1079
1080	<	static class CallableOne implements Callable<Integer> {
1080	>	public static class CallableOne implements Callable<Integer> {
1081		public Integer call() { return one; }
1082		}
1083
1084	<	class ShortRunnable extends CheckedRunnable {
1085	<	void realRun() throws Throwable {
1086	<	Thread.sleep(SHORT_DELAY_MS);
1084	>	public class ShortRunnable extends CheckedRunnable {
1085	>	protected void realRun() throws Throwable {
1086	>	delay(SHORT_DELAY_MS);
1087		}
1088		}
1089
1090	<	class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1091	<	void realRun() throws InterruptedException {
1092	<	Thread.sleep(SHORT_DELAY_MS);
1090	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1091	>	protected void realRun() throws InterruptedException {
1092	>	delay(SHORT_DELAY_MS);
1093		}
1094		}
1095
1096	<	class SmallRunnable extends CheckedRunnable {
1097	<	void realRun() throws Throwable {
1098	<	Thread.sleep(SMALL_DELAY_MS);
1096	>	public class SmallRunnable extends CheckedRunnable {
1097	>	protected void realRun() throws Throwable {
1098	>	delay(SMALL_DELAY_MS);
1099		}
1100		}
1101
1102	<	class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1103	<	void realRun() {
1102	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1103	>	protected void realRun() {
1104		try {
1105	<	Thread.sleep(SMALL_DELAY_MS);
1106	<	}
577	<	catch (InterruptedException ok) {
578	<	}
1105	>	delay(SMALL_DELAY_MS);
1106	>	} catch (InterruptedException ok) {}
1107		}
1108		}
1109
1110	<	class SmallCallable extends CheckedCallable {
1111	<	Object realCall() throws Throwable {
1112	<	Thread.sleep(SMALL_DELAY_MS);
1110	>	public class SmallCallable extends CheckedCallable {
1111	>	protected Object realCall() throws InterruptedException {
1112	>	delay(SMALL_DELAY_MS);
1113		return Boolean.TRUE;
1114		}
1115		}
1116
1117	<	class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
1118	<	void realRun() throws InterruptedException {
1119	<	Thread.sleep(SMALL_DELAY_MS);
1117	>	public class MediumRunnable extends CheckedRunnable {
1118	>	protected void realRun() throws Throwable {
1119	>	delay(MEDIUM_DELAY_MS);
1120		}
1121		}
1122
1123	<	class MediumRunnable extends CheckedRunnable {
1124	<	void realRun() throws Throwable {
1125	<	Thread.sleep(MEDIUM_DELAY_MS);
1123	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1124	>	protected void realRun() throws InterruptedException {
1125	>	delay(MEDIUM_DELAY_MS);
1126		}
1127		}
1128
1129	<	class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1130	<	void realRun() throws InterruptedException {
1131	<	Thread.sleep(MEDIUM_DELAY_MS);
1132	<	}
1129	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1130	>	return new CheckedRunnable() {
1131	>	protected void realRun() {
1132	>	try {
1133	>	delay(timeoutMillis);
1134	>	} catch (InterruptedException ok) {}
1135	>	}};
1136		}
1137
1138	<	class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1139	<	void realRun() {
1138	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1139	>	protected void realRun() {
1140		try {
1141	<	Thread.sleep(MEDIUM_DELAY_MS);
1142	<	}
612	<	catch (InterruptedException ok) {
613	<	}
1141	>	delay(MEDIUM_DELAY_MS);
1142	>	} catch (InterruptedException ok) {}
1143		}
1144		}
1145
1146	<	class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1147	<	void realRun() {
1146	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1147	>	protected void realRun() {
1148		try {
1149	<	Thread.sleep(LONG_DELAY_MS);
1150	<	}
622	<	catch (InterruptedException ok) {
623	<	}
1149	>	delay(LONG_DELAY_MS);
1150	>	} catch (InterruptedException ok) {}
1151		}
1152		}
1153
1154		/**
1155		* For use as ThreadFactory in constructors
1156		*/
1157	<	static class SimpleThreadFactory implements ThreadFactory {
1157	>	public static class SimpleThreadFactory implements ThreadFactory {
1158		public Thread newThread(Runnable r) {
1159		return new Thread(r);
1160		}
1161		}
1162
1163	<	static class TrackedShortRunnable implements Runnable {
1164	<	volatile boolean done = false;
1163	>	public interface TrackedRunnable extends Runnable {
1164	>	boolean isDone();
1165	>	}
1166	>
1167	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1168	>	return new TrackedRunnable() {
1169	>	private volatile boolean done = false;
1170	>	public boolean isDone() { return done; }
1171	>	public void run() {
1172	>	try {
1173	>	delay(timeoutMillis);
1174	>	done = true;
1175	>	} catch (InterruptedException ok) {}
1176	>	}
1177	>	};
1178	>	}
1179	>
1180	>	public static class TrackedShortRunnable implements Runnable {
1181	>	public volatile boolean done = false;
1182		public void run() {
1183		try {
1184	<	Thread.sleep(SMALL_DELAY_MS);
1184	>	delay(SHORT_DELAY_MS);
1185		done = true;
1186	<	} catch (InterruptedException ok) {
643	<	}
1186	>	} catch (InterruptedException ok) {}
1187		}
1188		}
1189
1190	<	static class TrackedMediumRunnable implements Runnable {
1191	<	volatile boolean done = false;
1190	>	public static class TrackedSmallRunnable implements Runnable {
1191	>	public volatile boolean done = false;
1192		public void run() {
1193		try {
1194	<	Thread.sleep(MEDIUM_DELAY_MS);
1194	>	delay(SMALL_DELAY_MS);
1195		done = true;
1196	<	} catch (InterruptedException ok) {
654	<	}
1196	>	} catch (InterruptedException ok) {}
1197		}
1198		}
1199
1200	<	static class TrackedLongRunnable implements Runnable {
1201	<	volatile boolean done = false;
1200	>	public static class TrackedMediumRunnable implements Runnable {
1201	>	public volatile boolean done = false;
1202		public void run() {
1203		try {
1204	<	Thread.sleep(LONG_DELAY_MS);
1204	>	delay(MEDIUM_DELAY_MS);
1205		done = true;
1206	<	} catch (InterruptedException ok) {
665	<	}
1206	>	} catch (InterruptedException ok) {}
1207		}
1208		}
1209
1210	<	static class TrackedNoOpRunnable implements Runnable {
1211	<	volatile boolean done = false;
1210	>	public static class TrackedLongRunnable implements Runnable {
1211	>	public volatile boolean done = false;
1212	>	public void run() {
1213	>	try {
1214	>	delay(LONG_DELAY_MS);
1215	>	done = true;
1216	>	} catch (InterruptedException ok) {}
1217	>	}
1218	>	}
1219	>
1220	>	public static class TrackedNoOpRunnable implements Runnable {
1221	>	public volatile boolean done = false;
1222		public void run() {
1223		done = true;
1224		}
1225		}
1226
1227	<	static class TrackedCallable implements Callable {
1228	<	volatile boolean done = false;
1227	>	public static class TrackedCallable implements Callable {
1228	>	public volatile boolean done = false;
1229		public Object call() {
1230		try {
1231	<	Thread.sleep(SMALL_DELAY_MS);
1231	>	delay(SMALL_DELAY_MS);
1232		done = true;
1233	<	} catch (InterruptedException ok) {
683	<	}
1233	>	} catch (InterruptedException ok) {}
1234		return Boolean.TRUE;
1235		}
1236		}
1237
1238	+	/**
1239	+	* Analog of CheckedRunnable for RecursiveAction
1240	+	*/
1241	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1242	+	protected abstract void realCompute() throws Throwable;
1243	+
1244	+	@Override protected final void compute() {
1245	+	try {
1246	+	realCompute();
1247	+	} catch (Throwable t) {
1248	+	threadUnexpectedException(t);
1249	+	}
1250	+	}
1251	+	}
1252	+
1253	+	/**
1254	+	* Analog of CheckedCallable for RecursiveTask
1255	+	*/
1256	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1257	+	protected abstract T realCompute() throws Throwable;
1258	+
1259	+	@Override protected final T compute() {
1260	+	try {
1261	+	return realCompute();
1262	+	} catch (Throwable t) {
1263	+	threadUnexpectedException(t);
1264	+	return null;
1265	+	}
1266	+	}
1267	+	}
1268
1269		/**
1270		* For use as RejectedExecutionHandler in constructors
1271		*/
1272	<	static class NoOpREHandler implements RejectedExecutionHandler {
1272	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1273		public void rejectedExecution(Runnable r,
1274		ThreadPoolExecutor executor) {}
1275		}
1276
1277	+	/**
1278	+	* A CyclicBarrier that uses timed await and fails with
1279	+	* AssertionFailedErrors instead of throwing checked exceptions.
1280	+	*/
1281	+	public class CheckedBarrier extends CyclicBarrier {
1282	+	public CheckedBarrier(int parties) { super(parties); }
1283	+
1284	+	public int await() {
1285	+	try {
1286	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1287	+	} catch (TimeoutException e) {
1288	+	throw new AssertionFailedError("timed out");
1289	+	} catch (Exception e) {
1290	+	AssertionFailedError afe =
1291	+	new AssertionFailedError("Unexpected exception: " + e);
1292	+	afe.initCause(e);
1293	+	throw afe;
1294	+	}
1295	+	}
1296	+	}
1297	+
1298	+	void checkEmpty(BlockingQueue q) {
1299	+	try {
1300	+	assertTrue(q.isEmpty());
1301	+	assertEquals(0, q.size());
1302	+	assertNull(q.peek());
1303	+	assertNull(q.poll());
1304	+	assertNull(q.poll(0, MILLISECONDS));
1305	+	assertEquals(q.toString(), "[]");
1306	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1307	+	assertFalse(q.iterator().hasNext());
1308	+	try {
1309	+	q.element();
1310	+	shouldThrow();
1311	+	} catch (NoSuchElementException success) {}
1312	+	try {
1313	+	q.iterator().next();
1314	+	shouldThrow();
1315	+	} catch (NoSuchElementException success) {}
1316	+	try {
1317	+	q.remove();
1318	+	shouldThrow();
1319	+	} catch (NoSuchElementException success) {}
1320	+	} catch (InterruptedException ie) {
1321	+	threadUnexpectedException(ie);
1322	+	}
1323	+	}
1324	+
1325	+	void assertSerialEquals(Object x, Object y) {
1326	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1327	+	}
1328	+
1329	+	void assertNotSerialEquals(Object x, Object y) {
1330	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1331	+	}
1332	+
1333	+	byte[] serialBytes(Object o) {
1334	+	try {
1335	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1336	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1337	+	oos.writeObject(o);
1338	+	oos.flush();
1339	+	oos.close();
1340	+	return bos.toByteArray();
1341	+	} catch (Throwable t) {
1342	+	threadUnexpectedException(t);
1343	+	return new byte[0];
1344	+	}
1345	+	}
1346	+
1347	+	@SuppressWarnings("unchecked")
1348	+	<T> T serialClone(T o) {
1349	+	try {
1350	+	ObjectInputStream ois = new ObjectInputStream
1351	+	(new ByteArrayInputStream(serialBytes(o)));
1352	+	T clone = (T) ois.readObject();
1353	+	assertSame(o.getClass(), clone.getClass());
1354	+	return clone;
1355	+	} catch (Throwable t) {
1356	+	threadUnexpectedException(t);
1357	+	return null;
1358	+	}
1359	+	}
1360	+
1361	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1362	+	Runnable... throwingActions) {
1363	+	for (Runnable throwingAction : throwingActions) {
1364	+	boolean threw = false;
1365	+	try { throwingAction.run(); }
1366	+	catch (Throwable t) {
1367	+	threw = true;
1368	+	if (!expectedExceptionClass.isInstance(t)) {
1369	+	AssertionFailedError afe =
1370	+	new AssertionFailedError
1371	+	("Expected " + expectedExceptionClass.getName() +
1372	+	", got " + t.getClass().getName());
1373	+	afe.initCause(t);
1374	+	threadUnexpectedException(afe);
1375	+	}
1376	+	}
1377	+	if (!threw)
1378	+	shouldThrow(expectedExceptionClass.getName());
1379	+	}
1380	+	}
1381		}

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