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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.31 by dl, Sun Apr 13 14:16:25 2008 UTC vs.
Revision 1.103 by dl, Wed Mar 20 20:29:02 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	>	protected void runTest() throws Throwable {
132	>	if (profileTests)
133	>	runTestProfiled();
134	>	else
135	>	super.runTest();
136	>	}
137	>
138	>	protected void runTestProfiled() throws Throwable {
139	>	long t0 = System.nanoTime();
140	>	try {
141	>	super.runTest();
142	>	} finally {
143	>	long elapsedMillis =
144	>	(System.nanoTime() - t0) / (1000L * 1000L);
145	>	if (elapsedMillis >= profileThreshold)
146	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
147	>	}
148	>	}
149	>
150	>	/**
151	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
152	>	* Optional command line arg provides the number of iterations to
153	>	* repeat running the tests.
154	>	*/
155	>	public static void main(String[] args) {
156	>	if (useSecurityManager) {
157	>	System.err.println("Setting a permissive security manager");
158	>	Policy.setPolicy(permissivePolicy());
159	>	System.setSecurityManager(new SecurityManager());
160	>	}
161	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
162	>
163		Test s = suite();
164		for (int i = 0; i < iters; ++i) {
165	<	junit.textui.TestRunner.run (s);
165	>	junit.textui.TestRunner.run(s);
166		System.gc();
167		System.runFinalization();
168		}
169		System.exit(0);
170		}
171
172	<	/**
173	<	* Collects all JSR166 unit tests as one suite
174	<	*/
175	<	public static Test suite ( ) {
176	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
172	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
173	>	TestSuite suite = new TestSuite();
174	>	for (Object suiteOrClass : suiteOrClasses) {
175	>	if (suiteOrClass instanceof TestSuite)
176	>	suite.addTest((TestSuite) suiteOrClass);
177	>	else if (suiteOrClass instanceof Class)
178	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
179	>	else
180	>	throw new ClassCastException("not a test suite or class");
181	>	}
182	>	return suite;
183	>	}
184
185	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
186	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
187	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
188	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
189	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
190	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
191	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
192	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
193	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
194	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
195	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
196	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
197	<	suite.addTest(new TestSuite(AtomicLongTest.class));
198	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
199	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
200	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
201	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
202	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
203	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
204	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
205	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
206	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
207	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
208	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
209	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
210	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
211	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
212	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
213	<	suite.addTest(new TestSuite(DelayQueueTest.class));
214	<	suite.addTest(new TestSuite(EntryTest.class));
215	<	suite.addTest(new TestSuite(ExchangerTest.class));
216	<	suite.addTest(new TestSuite(ExecutorsTest.class));
217	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
218	<	suite.addTest(new TestSuite(FutureTaskTest.class));
219	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
220	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
221	<	suite.addTest(new TestSuite(LinkedListTest.class));
222	<	suite.addTest(new TestSuite(LockSupportTest.class));
223	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
224	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
225	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
226	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
227	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
228	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
229	<	suite.addTest(new TestSuite(SemaphoreTest.class));
230	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
231	<	suite.addTest(new TestSuite(SystemTest.class));
232	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
233	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
234	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
235	<	suite.addTest(new TestSuite(ThreadTest.class));
236	<	suite.addTest(new TestSuite(TimeUnitTest.class));
237	<	suite.addTest(new TestSuite(TreeMapTest.class));
238	<	suite.addTest(new TestSuite(TreeSetTest.class));
239	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
240	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
185	>	public static void addNamedTestClasses(TestSuite suite,
186	>	String... testClassNames) {
187	>	for (String testClassName : testClassNames) {
188	>	try {
189	>	Class<?> testClass = Class.forName(testClassName);
190	>	Method m = testClass.getDeclaredMethod("suite",
191	>	new Class<?>[0]);
192	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
193	>	} catch (Exception e) {
194	>	throw new Error("Missing test class", e);
195	>	}
196	>	}
197	>	}
198	>
199	>	public static final double JAVA_CLASS_VERSION;
200	>	static {
201	>	try {
202	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
203	>	new java.security.PrivilegedAction<Double>() {
204	>	public Double run() {
205	>	return Double.valueOf(System.getProperty("java.class.version"));}});
206	>	} catch (Throwable t) {
207	>	throw new Error(t);
208	>	}
209	>	}
210	>
211	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
212	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
213	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
214	>
215	>	/**
216	>	* Collects all JSR166 unit tests as one suite.
217	>	*/
218	>	public static Test suite() {
219	>	// Java7+ test classes
220	>	TestSuite suite = newTestSuite(
221	>	ForkJoinPoolTest.suite(),
222	>	ForkJoinTaskTest.suite(),
223	>	RecursiveActionTest.suite(),
224	>	RecursiveTaskTest.suite(),
225	>	LinkedTransferQueueTest.suite(),
226	>	PhaserTest.suite(),
227	>	ThreadLocalRandomTest.suite(),
228	>	AbstractExecutorServiceTest.suite(),
229	>	AbstractQueueTest.suite(),
230	>	AbstractQueuedSynchronizerTest.suite(),
231	>	AbstractQueuedLongSynchronizerTest.suite(),
232	>	ArrayBlockingQueueTest.suite(),
233	>	ArrayDequeTest.suite(),
234	>	AtomicBooleanTest.suite(),
235	>	AtomicIntegerArrayTest.suite(),
236	>	AtomicIntegerFieldUpdaterTest.suite(),
237	>	AtomicIntegerTest.suite(),
238	>	AtomicLongArrayTest.suite(),
239	>	AtomicLongFieldUpdaterTest.suite(),
240	>	AtomicLongTest.suite(),
241	>	AtomicMarkableReferenceTest.suite(),
242	>	AtomicReferenceArrayTest.suite(),
243	>	AtomicReferenceFieldUpdaterTest.suite(),
244	>	AtomicReferenceTest.suite(),
245	>	AtomicStampedReferenceTest.suite(),
246	>	ConcurrentHashMapTest.suite(),
247	>	ConcurrentLinkedDequeTest.suite(),
248	>	ConcurrentLinkedQueueTest.suite(),
249	>	ConcurrentSkipListMapTest.suite(),
250	>	ConcurrentSkipListSubMapTest.suite(),
251	>	ConcurrentSkipListSetTest.suite(),
252	>	ConcurrentSkipListSubSetTest.suite(),
253	>	CopyOnWriteArrayListTest.suite(),
254	>	CopyOnWriteArraySetTest.suite(),
255	>	CountDownLatchTest.suite(),
256	>	CyclicBarrierTest.suite(),
257	>	DelayQueueTest.suite(),
258	>	EntryTest.suite(),
259	>	ExchangerTest.suite(),
260	>	ExecutorsTest.suite(),
261	>	ExecutorCompletionServiceTest.suite(),
262	>	FutureTaskTest.suite(),
263	>	LinkedBlockingDequeTest.suite(),
264	>	LinkedBlockingQueueTest.suite(),
265	>	LinkedListTest.suite(),
266	>	LockSupportTest.suite(),
267	>	PriorityBlockingQueueTest.suite(),
268	>	PriorityQueueTest.suite(),
269	>	ReentrantLockTest.suite(),
270	>	ReentrantReadWriteLockTest.suite(),
271	>	ScheduledExecutorTest.suite(),
272	>	ScheduledExecutorSubclassTest.suite(),
273	>	SemaphoreTest.suite(),
274	>	SynchronousQueueTest.suite(),
275	>	SystemTest.suite(),
276	>	ThreadLocalTest.suite(),
277	>	ThreadPoolExecutorTest.suite(),
278	>	ThreadPoolExecutorSubclassTest.suite(),
279	>	ThreadTest.suite(),
280	>	TimeUnitTest.suite(),
281	>	TreeMapTest.suite(),
282	>	TreeSetTest.suite(),
283	>	TreeSubMapTest.suite(),
284	>	TreeSubSetTest.suite());
285	>
286	>	// Java8+ test classes
287	>	if (atLeastJava8()) {
288	>	String[] java8TestClassNames = {
289	>	"LongAdderTest",
290	>	"LongAccumulatorTest",
291	>	"DoubleAdderTest",
292	>	"DoubleAccumulatorTest",
293	>	"CompletableFutureTest",
294	>	"ForkJoinPool8Test",
295	>	"StampedLockTest",
296	>	};
297	>	addNamedTestClasses(suite, java8TestClassNames);
298	>	}
299
300		return suite;
301		}
#	Line 183 | Line 315 | public class JSR166TestCase extends Test
315		return 50;
316		}
317
186	–
318		/**
319		* Sets delays as multiples of SHORT_DELAY.
320		*/
321	<	protected  void setDelays() {
321	>	protected void setDelays() {
322		SHORT_DELAY_MS = getShortDelay();
323	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
323	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
324		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
325	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
325	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
326	>	}
327	>
328	>	/**
329	>	* Returns a timeout in milliseconds to be used in tests that
330	>	* verify that operations block or time out.
331	>	*/
332	>	long timeoutMillis() {
333	>	return SHORT_DELAY_MS / 4;
334	>	}
335	>
336	>	/**
337	>	* Returns a new Date instance representing a time delayMillis
338	>	* milliseconds in the future.
339	>	*/
340	>	Date delayedDate(long delayMillis) {
341	>	return new Date(System.currentTimeMillis() + delayMillis);
342		}
343
344		/**
345	<	* Flag set true if any threadAssert methods fail
345	>	* The first exception encountered if any threadAssertXXX method fails.
346		*/
347	<	volatile boolean threadFailed;
347	>	private final AtomicReference<Throwable> threadFailure
348	>	= new AtomicReference<Throwable>(null);
349
350		/**
351	<	* Initializes test to indicate that no thread assertions have failed
351	>	* Records an exception so that it can be rethrown later in the test
352	>	* harness thread, triggering a test case failure.  Only the first
353	>	* failure is recorded; subsequent calls to this method from within
354	>	* the same test have no effect.
355		*/
356	+	public void threadRecordFailure(Throwable t) {
357	+	threadFailure.compareAndSet(null, t);
358	+	}
359	+
360		public void setUp() {
361		setDelays();
207	–	threadFailed = false;
362		}
363
364		/**
365	<	* Triggers test case failure if any thread assertions have failed
366	<	*/
367	<	public void tearDown() {
368	<	assertFalse(threadFailed);
365	>	* Extra checks that get done for all test cases.
366	>	*
367	>	* Triggers test case failure if any thread assertions have failed,
368	>	* by rethrowing, in the test harness thread, any exception recorded
369	>	* earlier by threadRecordFailure.
370	>	*
371	>	* Triggers test case failure if interrupt status is set in the main thread.
372	>	*/
373	>	public void tearDown() throws Exception {
374	>	Throwable t = threadFailure.getAndSet(null);
375	>	if (t != null) {
376	>	if (t instanceof Error)
377	>	throw (Error) t;
378	>	else if (t instanceof RuntimeException)
379	>	throw (RuntimeException) t;
380	>	else if (t instanceof Exception)
381	>	throw (Exception) t;
382	>	else {
383	>	AssertionFailedError afe =
384	>	new AssertionFailedError(t.toString());
385	>	afe.initCause(t);
386	>	throw afe;
387	>	}
388	>	}
389	>
390	>	if (Thread.interrupted())
391	>	throw new AssertionFailedError("interrupt status set in main thread");
392	>
393	>	checkForkJoinPoolThreadLeaks();
394	>	}
395	>
396	>	/**
397	>	* Find missing try { ... } finally { joinPool(e); }
398	>	*/
399	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
400	>	Thread[] survivors = new Thread[5];
401	>	int count = Thread.enumerate(survivors);
402	>	for (int i = 0; i < count; i++) {
403	>	Thread thread = survivors[i];
404	>	String name = thread.getName();
405	>	if (name.startsWith("ForkJoinPool-")) {
406	>	// give thread some time to terminate
407	>	thread.join(LONG_DELAY_MS);
408	>	if (!thread.isAlive()) continue;
409	>	thread.stop();
410	>	throw new AssertionFailedError
411	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
412	>	toString(), name));
413	>	}
414	>	}
415		}
416
417		/**
418	<	* Fail, also setting status to indicate current testcase should fail
418	>	* Just like fail(reason), but additionally recording (using
419	>	* threadRecordFailure) any AssertionFailedError thrown, so that
420	>	* the current testcase will fail.
421		*/
422		public void threadFail(String reason) {
423	<	threadFailed = true;
424	<	fail(reason);
423	>	try {
424	>	fail(reason);
425	>	} catch (AssertionFailedError t) {
426	>	threadRecordFailure(t);
427	>	fail(reason);
428	>	}
429		}
430
431		/**
432	<	* If expression not true, set status to indicate current testcase
433	<	* should fail
432	>	* Just like assertTrue(b), but additionally recording (using
433	>	* threadRecordFailure) any AssertionFailedError thrown, so that
434	>	* the current testcase will fail.
435		*/
436		public void threadAssertTrue(boolean b) {
437	<	if (!b) {
231	<	threadFailed = true;
437	>	try {
438		assertTrue(b);
439	+	} catch (AssertionFailedError t) {
440	+	threadRecordFailure(t);
441	+	throw t;
442		}
443		}
444
445		/**
446	<	* If expression not false, set status to indicate current testcase
447	<	* should fail
446	>	* Just like assertFalse(b), but additionally recording (using
447	>	* threadRecordFailure) any AssertionFailedError thrown, so that
448	>	* the current testcase will fail.
449		*/
450		public void threadAssertFalse(boolean b) {
451	<	if (b) {
242	<	threadFailed = true;
451	>	try {
452		assertFalse(b);
453	+	} catch (AssertionFailedError t) {
454	+	threadRecordFailure(t);
455	+	throw t;
456		}
457		}
458
459		/**
460	<	* If argument not null, set status to indicate current testcase
461	<	* should fail
460	>	* Just like assertNull(x), but additionally recording (using
461	>	* threadRecordFailure) any AssertionFailedError thrown, so that
462	>	* the current testcase will fail.
463		*/
464		public void threadAssertNull(Object x) {
465	<	if (x != null) {
253	<	threadFailed = true;
465	>	try {
466		assertNull(x);
467	+	} catch (AssertionFailedError t) {
468	+	threadRecordFailure(t);
469	+	throw t;
470		}
471		}
472
473		/**
474	<	* If arguments not equal, set status to indicate current testcase
475	<	* should fail
474	>	* Just like assertEquals(x, y), but additionally recording (using
475	>	* threadRecordFailure) any AssertionFailedError thrown, so that
476	>	* the current testcase will fail.
477		*/
478		public void threadAssertEquals(long x, long y) {
479	<	if (x != y) {
264	<	threadFailed = true;
479	>	try {
480		assertEquals(x, y);
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(Object x, Object y) {
493	<	if (x != y && (x == null || !x.equals(y))) {
275	<	threadFailed = true;
493	>	try {
494		assertEquals(x, y);
495	+	} catch (AssertionFailedError t) {
496	+	threadRecordFailure(t);
497	+	throw t;
498	+	} catch (Throwable t) {
499	+	threadUnexpectedException(t);
500		}
501		}
502
503		/**
504	<	* threadFail with message "should throw exception"
505	<	*/
504	>	* Just like assertSame(x, y), but additionally recording (using
505	>	* threadRecordFailure) any AssertionFailedError thrown, so that
506	>	* the current testcase will fail.
507	>	*/
508	>	public void threadAssertSame(Object x, Object y) {
509	>	try {
510	>	assertSame(x, y);
511	>	} catch (AssertionFailedError t) {
512	>	threadRecordFailure(t);
513	>	throw t;
514	>	}
515	>	}
516	>
517	>	/**
518	>	* Calls threadFail with message "should throw exception".
519	>	*/
520		public void threadShouldThrow() {
521	<	try {
522	<	threadFailed = true;
523	<	fail("should throw exception");
524	<	} catch (AssertionFailedError e) {
525	<	e.printStackTrace();
526	<	throw e;
527	<	}
521	>	threadFail("should throw exception");
522	>	}
523	>
524	>	/**
525	>	* Calls threadFail with message "should throw" + exceptionName.
526	>	*/
527	>	public void threadShouldThrow(String exceptionName) {
528	>	threadFail("should throw " + exceptionName);
529		}
530
531		/**
532	<	* threadFail with message "Unexpected exception"
532	>	* Records the given exception using {@link #threadRecordFailure},
533	>	* then rethrows the exception, wrapping it in an
534	>	* AssertionFailedError if necessary.
535		*/
536	<	public void threadUnexpectedException() {
537	<	threadFailed = true;
538	<	fail("Unexpected exception");
536	>	public void threadUnexpectedException(Throwable t) {
537	>	threadRecordFailure(t);
538	>	t.printStackTrace();
539	>	if (t instanceof RuntimeException)
540	>	throw (RuntimeException) t;
541	>	else if (t instanceof Error)
542	>	throw (Error) t;
543	>	else {
544	>	AssertionFailedError afe =
545	>	new AssertionFailedError("unexpected exception: " + t);
546	>	afe.initCause(t);
547	>	throw afe;
548	>	}
549		}
550
551		/**
552	<	* threadFail with message "Unexpected exception", with argument
552	>	* Delays, via Thread.sleep, for the given millisecond delay, but
553	>	* if the sleep is shorter than specified, may re-sleep or yield
554	>	* until time elapses.
555		*/
556	<	public void threadUnexpectedException(Throwable ex) {
557	<	threadFailed = true;
558	<	ex.printStackTrace();
559	<	fail("Unexpected exception: " + ex);
556	>	static void delay(long millis) throws InterruptedException {
557	>	long startTime = System.nanoTime();
558	>	long ns = millis * 1000 * 1000;
559	>	for (;;) {
560	>	if (millis > 0L)
561	>	Thread.sleep(millis);
562	>	else // too short to sleep
563	>	Thread.yield();
564	>	long d = ns - (System.nanoTime() - startTime);
565	>	if (d > 0L)
566	>	millis = d / (1000 * 1000);
567	>	else
568	>	break;
569	>	}
570		}
571
572		/**
573	<	* Wait out termination of a thread pool or fail doing so
573	>	* Waits out termination of a thread pool or fails doing so.
574		*/
575	<	public void joinPool(ExecutorService exec) {
575	>	void joinPool(ExecutorService exec) {
576		try {
577		exec.shutdown();
578	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
579	<	} catch(SecurityException ok) {
578	>	assertTrue("ExecutorService did not terminate in a timely manner",
579	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
580	>	} catch (SecurityException ok) {
581		// Allowed in case test doesn't have privs
582	<	} catch(InterruptedException ie) {
583	<	fail("Unexpected exception");
582	>	} catch (InterruptedException ie) {
583	>	fail("Unexpected InterruptedException");
584	>	}
585	>	}
586	>
587	>	/**
588	>	* A debugging tool to print all stack traces, as jstack does.
589	>	*/
590	>	static void printAllStackTraces() {
591	>	for (ThreadInfo info :
592	>	ManagementFactory.getThreadMXBean()
593	>	.dumpAllThreads(true, true))
594	>	System.err.print(info);
595	>	}
596	>
597	>	/**
598	>	* Checks that thread does not terminate within the default
599	>	* millisecond delay of {@code timeoutMillis()}.
600	>	*/
601	>	void assertThreadStaysAlive(Thread thread) {
602	>	assertThreadStaysAlive(thread, timeoutMillis());
603	>	}
604	>
605	>	/**
606	>	* Checks that thread does not terminate within the given millisecond delay.
607	>	*/
608	>	void assertThreadStaysAlive(Thread thread, long millis) {
609	>	try {
610	>	// No need to optimize the failing case via Thread.join.
611	>	delay(millis);
612	>	assertTrue(thread.isAlive());
613	>	} catch (InterruptedException ie) {
614	>	fail("Unexpected InterruptedException");
615		}
616		}
617
618	+	/**
619	+	* Checks that the threads do not terminate within the default
620	+	* millisecond delay of {@code timeoutMillis()}.
621	+	*/
622	+	void assertThreadsStayAlive(Thread... threads) {
623	+	assertThreadsStayAlive(timeoutMillis(), threads);
624	+	}
625
626		/**
627	<	* fail with message "should throw exception"
627	>	* Checks that the threads do not terminate within the given millisecond delay.
628	>	*/
629	>	void assertThreadsStayAlive(long millis, Thread... threads) {
630	>	try {
631	>	// No need to optimize the failing case via Thread.join.
632	>	delay(millis);
633	>	for (Thread thread : threads)
634	>	assertTrue(thread.isAlive());
635	>	} catch (InterruptedException ie) {
636	>	fail("Unexpected InterruptedException");
637	>	}
638	>	}
639	>
640	>	/**
641	>	* Checks that future.get times out, with the default timeout of
642	>	* {@code timeoutMillis()}.
643	>	*/
644	>	void assertFutureTimesOut(Future future) {
645	>	assertFutureTimesOut(future, timeoutMillis());
646	>	}
647	>
648	>	/**
649	>	* Checks that future.get times out, with the given millisecond timeout.
650	>	*/
651	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
652	>	long startTime = System.nanoTime();
653	>	try {
654	>	future.get(timeoutMillis, MILLISECONDS);
655	>	shouldThrow();
656	>	} catch (TimeoutException success) {
657	>	} catch (Exception e) {
658	>	threadUnexpectedException(e);
659	>	} finally { future.cancel(true); }
660	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
661	>	}
662	>
663	>	/**
664	>	* Fails with message "should throw exception".
665		*/
666		public void shouldThrow() {
667		fail("Should throw exception");
668		}
669
670		/**
671	<	* fail with message "Unexpected exception"
671	>	* Fails with message "should throw " + exceptionName.
672		*/
673	<	public void unexpectedException() {
674	<	fail("Unexpected exception");
673	>	public void shouldThrow(String exceptionName) {
674	>	fail("Should throw " + exceptionName);
675		}
676
339	–
677		/**
678		* The number of elements to place in collections, arrays, etc.
679		*/
680	<	static final int SIZE = 20;
680	>	public static final int SIZE = 20;
681
682		// Some convenient Integer constants
683
684	<	static final Integer zero = new Integer(0);
685	<	static final Integer one = new Integer(1);
686	<	static final Integer two = new Integer(2);
687	<	static final Integer three  = new Integer(3);
688	<	static final Integer four  = new Integer(4);
689	<	static final Integer five  = new Integer(5);
690	<	static final Integer six = new Integer(6);
691	<	static final Integer seven = new Integer(7);
692	<	static final Integer eight = new Integer(8);
693	<	static final Integer nine = new Integer(9);
694	<	static final Integer m1  = new Integer(-1);
695	<	static final Integer m2  = new Integer(-2);
696	<	static final Integer m3  = new Integer(-3);
697	<	static final Integer m4 = new Integer(-4);
698	<	static final Integer m5 = new Integer(-5);
699	<	static final Integer m6 = new Integer(-6);
700	<	static final Integer m10 = new Integer(-10);
684	>	public static final Integer zero  = new Integer(0);
685	>	public static final Integer one   = new Integer(1);
686	>	public static final Integer two   = new Integer(2);
687	>	public static final Integer three = new Integer(3);
688	>	public static final Integer four  = new Integer(4);
689	>	public static final Integer five  = new Integer(5);
690	>	public static final Integer six   = new Integer(6);
691	>	public static final Integer seven = new Integer(7);
692	>	public static final Integer eight = new Integer(8);
693	>	public static final Integer nine  = new Integer(9);
694	>	public static final Integer m1  = new Integer(-1);
695	>	public static final Integer m2  = new Integer(-2);
696	>	public static final Integer m3  = new Integer(-3);
697	>	public static final Integer m4  = new Integer(-4);
698	>	public static final Integer m5  = new Integer(-5);
699	>	public static final Integer m6  = new Integer(-6);
700	>	public static final Integer m10 = new Integer(-10);
701
702
703		/**
704	+	* Runs Runnable r with a security policy that permits precisely
705	+	* the specified permissions.  If there is no current security
706	+	* manager, the runnable is run twice, both with and without a
707	+	* security manager.  We require that any security manager permit
708	+	* getPolicy/setPolicy.
709	+	*/
710	+	public void runWithPermissions(Runnable r, Permission... permissions) {
711	+	SecurityManager sm = System.getSecurityManager();
712	+	if (sm == null) {
713	+	r.run();
714	+	}
715	+	runWithSecurityManagerWithPermissions(r, permissions);
716	+	}
717	+
718	+	/**
719	+	* Runs Runnable r with a security policy that permits precisely
720	+	* the specified permissions.  If there is no current security
721	+	* manager, a temporary one is set for the duration of the
722	+	* Runnable.  We require that any security manager permit
723	+	* getPolicy/setPolicy.
724	+	*/
725	+	public void runWithSecurityManagerWithPermissions(Runnable r,
726	+	Permission... permissions) {
727	+	SecurityManager sm = System.getSecurityManager();
728	+	if (sm == null) {
729	+	Policy savedPolicy = Policy.getPolicy();
730	+	try {
731	+	Policy.setPolicy(permissivePolicy());
732	+	System.setSecurityManager(new SecurityManager());
733	+	runWithSecurityManagerWithPermissions(r, permissions);
734	+	} finally {
735	+	System.setSecurityManager(null);
736	+	Policy.setPolicy(savedPolicy);
737	+	}
738	+	} else {
739	+	Policy savedPolicy = Policy.getPolicy();
740	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
741	+	Policy.setPolicy(policy);
742	+
743	+	try {
744	+	r.run();
745	+	} finally {
746	+	policy.addPermission(new SecurityPermission("setPolicy"));
747	+	Policy.setPolicy(savedPolicy);
748	+	}
749	+	}
750	+	}
751	+
752	+	/**
753	+	* Runs a runnable without any permissions.
754	+	*/
755	+	public void runWithoutPermissions(Runnable r) {
756	+	runWithPermissions(r);
757	+	}
758	+
759	+	/**
760		* A security policy where new permissions can be dynamically added
761		* or all cleared.
762		*/
763	<	static class AdjustablePolicy extends java.security.Policy {
763	>	public static class AdjustablePolicy extends java.security.Policy {
764		Permissions perms = new Permissions();
765	<	AdjustablePolicy() { }
765	>	AdjustablePolicy(Permission... permissions) {
766	>	for (Permission permission : permissions)
767	>	perms.add(permission);
768	>	}
769		void addPermission(Permission perm) { perms.add(perm); }
770		void clearPermissions() { perms = new Permissions(); }
771	<	public PermissionCollection getPermissions(CodeSource cs) {
772	<	return perms;
773	<	}
774	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
775	<	return perms;
776	<	}
777	<	public boolean implies(ProtectionDomain pd, Permission p) {
778	<	return perms.implies(p);
779	<	}
780	<	public void refresh() {}
771	>	public PermissionCollection getPermissions(CodeSource cs) {
772	>	return perms;
773	>	}
774	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
775	>	return perms;
776	>	}
777	>	public boolean implies(ProtectionDomain pd, Permission p) {
778	>	return perms.implies(p);
779	>	}
780	>	public void refresh() {}
781	>	public String toString() {
782	>	List<Permission> ps = new ArrayList<Permission>();
783	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
784	>	ps.add(e.nextElement());
785	>	return "AdjustablePolicy with permissions " + ps;
786	>	}
787		}
788
789	+	/**
790	+	* Returns a policy containing all the permissions we ever need.
791	+	*/
792	+	public static Policy permissivePolicy() {
793	+	return new AdjustablePolicy
794	+	// Permissions j.u.c. needs directly
795	+	(new RuntimePermission("modifyThread"),
796	+	new RuntimePermission("getClassLoader"),
797	+	new RuntimePermission("setContextClassLoader"),
798	+	// Permissions needed to change permissions!
799	+	new SecurityPermission("getPolicy"),
800	+	new SecurityPermission("setPolicy"),
801	+	new RuntimePermission("setSecurityManager"),
802	+	// Permissions needed by the junit test harness
803	+	new RuntimePermission("accessDeclaredMembers"),
804	+	new PropertyPermission("*", "read"),
805	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
806	+	}
807
808	<	// Some convenient Runnable classes
808	>	/**
809	>	* Sleeps until the given time has elapsed.
810	>	* Throws AssertionFailedError if interrupted.
811	>	*/
812	>	void sleep(long millis) {
813	>	try {
814	>	delay(millis);
815	>	} catch (InterruptedException ie) {
816	>	AssertionFailedError afe =
817	>	new AssertionFailedError("Unexpected InterruptedException");
818	>	afe.initCause(ie);
819	>	throw afe;
820	>	}
821	>	}
822
823	<	static class NoOpRunnable implements Runnable {
824	<	public void run() {}
823	>	/**
824	>	* Spin-waits up to the specified number of milliseconds for the given
825	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
826	>	*/
827	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
828	>	long startTime = System.nanoTime();
829	>	for (;;) {
830	>	Thread.State s = thread.getState();
831	>	if (s == Thread.State.BLOCKED ||
832	>	s == Thread.State.WAITING ||
833	>	s == Thread.State.TIMED_WAITING)
834	>	return;
835	>	else if (s == Thread.State.TERMINATED)
836	>	fail("Unexpected thread termination");
837	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
838	>	threadAssertTrue(thread.isAlive());
839	>	return;
840	>	}
841	>	Thread.yield();
842	>	}
843		}
844
845	<	static class NoOpCallable implements Callable {
846	<	public Object call() { return Boolean.TRUE; }
845	>	/**
846	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
847	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
848	>	*/
849	>	void waitForThreadToEnterWaitState(Thread thread) {
850	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
851		}
852
853	<	static final String TEST_STRING = "a test string";
853	>	/**
854	>	* Returns the number of milliseconds since time given by
855	>	* startNanoTime, which must have been previously returned from a
856	>	* call to {@link System.nanoTime()}.
857	>	*/
858	>	long millisElapsedSince(long startNanoTime) {
859	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
860	>	}
861
862	<	static class StringTask implements Callable<String> {
863	<	public String call() { return TEST_STRING; }
862	>	/**
863	>	* Returns a new started daemon Thread running the given runnable.
864	>	*/
865	>	Thread newStartedThread(Runnable runnable) {
866	>	Thread t = new Thread(runnable);
867	>	t.setDaemon(true);
868	>	t.start();
869	>	return t;
870		}
871
872	<	static class NPETask implements Callable<String> {
873	<	public String call() { throw new NullPointerException(); }
872	>	/**
873	>	* Waits for the specified time (in milliseconds) for the thread
874	>	* to terminate (using {@link Thread#join(long)}), else interrupts
875	>	* the thread (in the hope that it may terminate later) and fails.
876	>	*/
877	>	void awaitTermination(Thread t, long timeoutMillis) {
878	>	try {
879	>	t.join(timeoutMillis);
880	>	} catch (InterruptedException ie) {
881	>	threadUnexpectedException(ie);
882	>	} finally {
883	>	if (t.getState() != Thread.State.TERMINATED) {
884	>	t.interrupt();
885	>	fail("Test timed out");
886	>	}
887	>	}
888		}
889
890	<	static class CallableOne implements Callable<Integer> {
891	<	public Integer call() { return one; }
890	>	/**
891	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
892	>	* terminate (using {@link Thread#join(long)}), else interrupts
893	>	* the thread (in the hope that it may terminate later) and fails.
894	>	*/
895	>	void awaitTermination(Thread t) {
896	>	awaitTermination(t, LONG_DELAY_MS);
897		}
898
899	<	class ShortRunnable implements Runnable {
900	<	public void run() {
899	>	// Some convenient Runnable classes
900	>
901	>	public abstract class CheckedRunnable implements Runnable {
902	>	protected abstract void realRun() throws Throwable;
903	>
904	>	public final void run() {
905		try {
906	<	Thread.sleep(SHORT_DELAY_MS);
907	<	}
908	<	catch(Exception e) {
418	<	threadUnexpectedException(e);
906	>	realRun();
907	>	} catch (Throwable t) {
908	>	threadUnexpectedException(t);
909		}
910		}
911		}
912
913	<	class ShortInterruptedRunnable implements Runnable {
914	<	public void run() {
913	>	public abstract class RunnableShouldThrow implements Runnable {
914	>	protected abstract void realRun() throws Throwable;
915	>
916	>	final Class<?> exceptionClass;
917	>
918	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
919	>	this.exceptionClass = exceptionClass;
920	>	}
921	>
922	>	public final void run() {
923		try {
924	<	Thread.sleep(SHORT_DELAY_MS);
925	<	threadShouldThrow();
926	<	}
927	<	catch(InterruptedException success) {
924	>	realRun();
925	>	threadShouldThrow(exceptionClass.getSimpleName());
926	>	} catch (Throwable t) {
927	>	if (! exceptionClass.isInstance(t))
928	>	threadUnexpectedException(t);
929		}
930		}
931		}
932
933	<	class SmallRunnable implements Runnable {
934	<	public void run() {
933	>	public abstract class ThreadShouldThrow extends Thread {
934	>	protected abstract void realRun() throws Throwable;
935	>
936	>	final Class<?> exceptionClass;
937	>
938	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
939	>	this.exceptionClass = exceptionClass;
940	>	}
941	>
942	>	public final void run() {
943		try {
944	<	Thread.sleep(SMALL_DELAY_MS);
945	<	}
946	<	catch(Exception e) {
947	<	threadUnexpectedException(e);
944	>	realRun();
945	>	threadShouldThrow(exceptionClass.getSimpleName());
946	>	} catch (Throwable t) {
947	>	if (! exceptionClass.isInstance(t))
948	>	threadUnexpectedException(t);
949		}
950		}
951		}
952
953	<	class SmallPossiblyInterruptedRunnable implements Runnable {
954	<	public void run() {
953	>	public abstract class CheckedInterruptedRunnable implements Runnable {
954	>	protected abstract void realRun() throws Throwable;
955	>
956	>	public final void run() {
957		try {
958	<	Thread.sleep(SMALL_DELAY_MS);
959	<	}
960	<	catch(Exception e) {
958	>	realRun();
959	>	threadShouldThrow("InterruptedException");
960	>	} catch (InterruptedException success) {
961	>	threadAssertFalse(Thread.interrupted());
962	>	} catch (Throwable t) {
963	>	threadUnexpectedException(t);
964		}
965		}
966		}
967
968	<	class SmallCallable implements Callable {
969	<	public Object call() {
968	>	public abstract class CheckedCallable<T> implements Callable<T> {
969	>	protected abstract T realCall() throws Throwable;
970	>
971	>	public final T call() {
972		try {
973	<	Thread.sleep(SMALL_DELAY_MS);
974	<	}
975	<	catch(Exception e) {
976	<	threadUnexpectedException(e);
973	>	return realCall();
974	>	} catch (Throwable t) {
975	>	threadUnexpectedException(t);
976	>	return null;
977		}
463	–	return Boolean.TRUE;
978		}
979		}
980
981	<	class SmallInterruptedRunnable implements Runnable {
982	<	public void run() {
981	>	public abstract class CheckedInterruptedCallable<T>
982	>	implements Callable<T> {
983	>	protected abstract T realCall() throws Throwable;
984	>
985	>	public final T call() {
986		try {
987	<	Thread.sleep(SMALL_DELAY_MS);
988	<	threadShouldThrow();
989	<	}
990	<	catch(InterruptedException success) {
987	>	T result = realCall();
988	>	threadShouldThrow("InterruptedException");
989	>	return result;
990	>	} catch (InterruptedException success) {
991	>	threadAssertFalse(Thread.interrupted());
992	>	} catch (Throwable t) {
993	>	threadUnexpectedException(t);
994		}
995	+	return null;
996		}
997		}
998
999	+	public static class NoOpRunnable implements Runnable {
1000	+	public void run() {}
1001	+	}
1002
1003	<	class MediumRunnable implements Runnable {
1004	<	public void run() {
1005	<	try {
1006	<	Thread.sleep(MEDIUM_DELAY_MS);
1007	<	}
1008	<	catch(Exception e) {
1009	<	threadUnexpectedException(e);
1010	<	}
1003	>	public static class NoOpCallable implements Callable {
1004	>	public Object call() { return Boolean.TRUE; }
1005	>	}
1006	>
1007	>	public static final String TEST_STRING = "a test string";
1008	>
1009	>	public static class StringTask implements Callable<String> {
1010	>	public String call() { return TEST_STRING; }
1011	>	}
1012	>
1013	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1014	>	return new CheckedCallable<String>() {
1015	>	protected String realCall() {
1016	>	try {
1017	>	latch.await();
1018	>	} catch (InterruptedException quittingTime) {}
1019	>	return TEST_STRING;
1020	>	}};
1021	>	}
1022	>
1023	>	public Runnable awaiter(final CountDownLatch latch) {
1024	>	return new CheckedRunnable() {
1025	>	public void realRun() throws InterruptedException {
1026	>	await(latch);
1027	>	}};
1028	>	}
1029	>
1030	>	public void await(CountDownLatch latch) {
1031	>	try {
1032	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1033	>	} catch (Throwable t) {
1034	>	threadUnexpectedException(t);
1035		}
1036		}
1037
1038	<	class MediumInterruptedRunnable implements Runnable {
1039	<	public void run() {
1038	>	public void await(Semaphore semaphore) {
1039	>	try {
1040	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1041	>	} catch (Throwable t) {
1042	>	threadUnexpectedException(t);
1043	>	}
1044	>	}
1045	>
1046	>	//     /**
1047	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1048	>	//      */
1049	>	//     public void await(AtomicBoolean flag) {
1050	>	//         await(flag, LONG_DELAY_MS);
1051	>	//     }
1052	>
1053	>	//     /**
1054	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1055	>	//      */
1056	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1057	>	//         long startTime = System.nanoTime();
1058	>	//         while (!flag.get()) {
1059	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1060	>	//                 throw new AssertionFailedError("timed out");
1061	>	//             Thread.yield();
1062	>	//         }
1063	>	//     }
1064	>
1065	>	public static class NPETask implements Callable<String> {
1066	>	public String call() { throw new NullPointerException(); }
1067	>	}
1068	>
1069	>	public static class CallableOne implements Callable<Integer> {
1070	>	public Integer call() { return one; }
1071	>	}
1072	>
1073	>	public class ShortRunnable extends CheckedRunnable {
1074	>	protected void realRun() throws Throwable {
1075	>	delay(SHORT_DELAY_MS);
1076	>	}
1077	>	}
1078	>
1079	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1080	>	protected void realRun() throws InterruptedException {
1081	>	delay(SHORT_DELAY_MS);
1082	>	}
1083	>	}
1084	>
1085	>	public class SmallRunnable extends CheckedRunnable {
1086	>	protected void realRun() throws Throwable {
1087	>	delay(SMALL_DELAY_MS);
1088	>	}
1089	>	}
1090	>
1091	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1092	>	protected void realRun() {
1093		try {
1094	<	Thread.sleep(MEDIUM_DELAY_MS);
1095	<	threadShouldThrow();
495	<	}
496	<	catch(InterruptedException success) {
497	<	}
1094	>	delay(SMALL_DELAY_MS);
1095	>	} catch (InterruptedException ok) {}
1096		}
1097		}
1098
1099	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1100	<	public void run() {
1099	>	public class SmallCallable extends CheckedCallable {
1100	>	protected Object realCall() throws InterruptedException {
1101	>	delay(SMALL_DELAY_MS);
1102	>	return Boolean.TRUE;
1103	>	}
1104	>	}
1105	>
1106	>	public class MediumRunnable extends CheckedRunnable {
1107	>	protected void realRun() throws Throwable {
1108	>	delay(MEDIUM_DELAY_MS);
1109	>	}
1110	>	}
1111	>
1112	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1113	>	protected void realRun() throws InterruptedException {
1114	>	delay(MEDIUM_DELAY_MS);
1115	>	}
1116	>	}
1117	>
1118	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1119	>	return new CheckedRunnable() {
1120	>	protected void realRun() {
1121	>	try {
1122	>	delay(timeoutMillis);
1123	>	} catch (InterruptedException ok) {}
1124	>	}};
1125	>	}
1126	>
1127	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1128	>	protected void realRun() {
1129		try {
1130	<	Thread.sleep(MEDIUM_DELAY_MS);
1131	<	}
506	<	catch(InterruptedException success) {
507	<	}
1130	>	delay(MEDIUM_DELAY_MS);
1131	>	} catch (InterruptedException ok) {}
1132		}
1133		}
1134
1135	<	class LongPossiblyInterruptedRunnable implements Runnable {
1136	<	public void run() {
1135	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1136	>	protected void realRun() {
1137		try {
1138	<	Thread.sleep(LONG_DELAY_MS);
1139	<	}
516	<	catch(InterruptedException success) {
517	<	}
1138	>	delay(LONG_DELAY_MS);
1139	>	} catch (InterruptedException ok) {}
1140		}
1141		}
1142
1143		/**
1144		* For use as ThreadFactory in constructors
1145		*/
1146	<	static class SimpleThreadFactory implements ThreadFactory{
1147	<	public Thread newThread(Runnable r){
1146	>	public static class SimpleThreadFactory implements ThreadFactory {
1147	>	public Thread newThread(Runnable r) {
1148		return new Thread(r);
1149		}
1150		}
1151
1152	<	static class TrackedShortRunnable implements Runnable {
1153	<	volatile boolean done = false;
1152	>	public interface TrackedRunnable extends Runnable {
1153	>	boolean isDone();
1154	>	}
1155	>
1156	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1157	>	return new TrackedRunnable() {
1158	>	private volatile boolean done = false;
1159	>	public boolean isDone() { return done; }
1160	>	public void run() {
1161	>	try {
1162	>	delay(timeoutMillis);
1163	>	done = true;
1164	>	} catch (InterruptedException ok) {}
1165	>	}
1166	>	};
1167	>	}
1168	>
1169	>	public static class TrackedShortRunnable implements Runnable {
1170	>	public volatile boolean done = false;
1171		public void run() {
1172		try {
1173	<	Thread.sleep(SMALL_DELAY_MS);
1173	>	delay(SHORT_DELAY_MS);
1174		done = true;
1175	<	} catch(Exception e){
537	<	}
1175	>	} catch (InterruptedException ok) {}
1176		}
1177		}
1178
1179	<	static class TrackedMediumRunnable implements Runnable {
1180	<	volatile boolean done = false;
1179	>	public static class TrackedSmallRunnable implements Runnable {
1180	>	public volatile boolean done = false;
1181		public void run() {
1182		try {
1183	<	Thread.sleep(MEDIUM_DELAY_MS);
1183	>	delay(SMALL_DELAY_MS);
1184		done = true;
1185	<	} catch(Exception e){
548	<	}
1185	>	} catch (InterruptedException ok) {}
1186		}
1187		}
1188
1189	<	static class TrackedLongRunnable implements Runnable {
1190	<	volatile boolean done = false;
1189	>	public static class TrackedMediumRunnable implements Runnable {
1190	>	public volatile boolean done = false;
1191		public void run() {
1192		try {
1193	<	Thread.sleep(LONG_DELAY_MS);
1193	>	delay(MEDIUM_DELAY_MS);
1194		done = true;
1195	<	} catch(Exception e){
1196	<	}
1195	>	} catch (InterruptedException ok) {}
1196	>	}
1197	>	}
1198	>
1199	>	public static class TrackedLongRunnable implements Runnable {
1200	>	public volatile boolean done = false;
1201	>	public void run() {
1202	>	try {
1203	>	delay(LONG_DELAY_MS);
1204	>	done = true;
1205	>	} catch (InterruptedException ok) {}
1206		}
1207		}
1208
1209	<	static class TrackedNoOpRunnable implements Runnable {
1210	<	volatile boolean done = false;
1209	>	public static class TrackedNoOpRunnable implements Runnable {
1210	>	public volatile boolean done = false;
1211		public void run() {
1212		done = true;
1213		}
1214		}
1215
1216	<	static class TrackedCallable implements Callable {
1217	<	volatile boolean done = false;
1216	>	public static class TrackedCallable implements Callable {
1217	>	public volatile boolean done = false;
1218		public Object call() {
1219		try {
1220	<	Thread.sleep(SMALL_DELAY_MS);
1220	>	delay(SMALL_DELAY_MS);
1221		done = true;
1222	<	} catch(Exception e){
577	<	}
1222	>	} catch (InterruptedException ok) {}
1223		return Boolean.TRUE;
1224		}
1225		}
1226
1227	+	/**
1228	+	* Analog of CheckedRunnable for RecursiveAction
1229	+	*/
1230	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1231	+	protected abstract void realCompute() throws Throwable;
1232	+
1233	+	public final void compute() {
1234	+	try {
1235	+	realCompute();
1236	+	} catch (Throwable t) {
1237	+	threadUnexpectedException(t);
1238	+	}
1239	+	}
1240	+	}
1241	+
1242	+	/**
1243	+	* Analog of CheckedCallable for RecursiveTask
1244	+	*/
1245	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1246	+	protected abstract T realCompute() throws Throwable;
1247	+
1248	+	public final T compute() {
1249	+	try {
1250	+	return realCompute();
1251	+	} catch (Throwable t) {
1252	+	threadUnexpectedException(t);
1253	+	return null;
1254	+	}
1255	+	}
1256	+	}
1257
1258		/**
1259		* For use as RejectedExecutionHandler in constructors
1260		*/
1261	<	static class NoOpREHandler implements RejectedExecutionHandler{
1262	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1261	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1262	>	public void rejectedExecution(Runnable r,
1263	>	ThreadPoolExecutor executor) {}
1264	>	}
1265	>
1266	>	/**
1267	>	* A CyclicBarrier that uses timed await and fails with
1268	>	* AssertionFailedErrors instead of throwing checked exceptions.
1269	>	*/
1270	>	public class CheckedBarrier extends CyclicBarrier {
1271	>	public CheckedBarrier(int parties) { super(parties); }
1272	>
1273	>	public int await() {
1274	>	try {
1275	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1276	>	} catch (TimeoutException e) {
1277	>	throw new AssertionFailedError("timed out");
1278	>	} catch (Exception e) {
1279	>	AssertionFailedError afe =
1280	>	new AssertionFailedError("Unexpected exception: " + e);
1281	>	afe.initCause(e);
1282	>	throw afe;
1283	>	}
1284	>	}
1285	>	}
1286	>
1287	>	void checkEmpty(BlockingQueue q) {
1288	>	try {
1289	>	assertTrue(q.isEmpty());
1290	>	assertEquals(0, q.size());
1291	>	assertNull(q.peek());
1292	>	assertNull(q.poll());
1293	>	assertNull(q.poll(0, MILLISECONDS));
1294	>	assertEquals(q.toString(), "[]");
1295	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1296	>	assertFalse(q.iterator().hasNext());
1297	>	try {
1298	>	q.element();
1299	>	shouldThrow();
1300	>	} catch (NoSuchElementException success) {}
1301	>	try {
1302	>	q.iterator().next();
1303	>	shouldThrow();
1304	>	} catch (NoSuchElementException success) {}
1305	>	try {
1306	>	q.remove();
1307	>	shouldThrow();
1308	>	} catch (NoSuchElementException success) {}
1309	>	} catch (InterruptedException ie) {
1310	>	threadUnexpectedException(ie);
1311	>	}
1312	>	}
1313	>
1314	>	void assertSerialEquals(Object x, Object y) {
1315	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1316		}
1317
1318	+	void assertNotSerialEquals(Object x, Object y) {
1319	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1320	+	}
1321
1322	+	byte[] serialBytes(Object o) {
1323	+	try {
1324	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1325	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1326	+	oos.writeObject(o);
1327	+	oos.flush();
1328	+	oos.close();
1329	+	return bos.toByteArray();
1330	+	} catch (Throwable t) {
1331	+	threadUnexpectedException(t);
1332	+	return new byte[0];
1333	+	}
1334	+	}
1335	+
1336	+	@SuppressWarnings("unchecked")
1337	+	<T> T serialClone(T o) {
1338	+	try {
1339	+	ObjectInputStream ois = new ObjectInputStream
1340	+	(new ByteArrayInputStream(serialBytes(o)));
1341	+	T clone = (T) ois.readObject();
1342	+	assertSame(o.getClass(), clone.getClass());
1343	+	return clone;
1344	+	} catch (Throwable t) {
1345	+	threadUnexpectedException(t);
1346	+	return null;
1347	+	}
1348	+	}
1349		}

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