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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.63 by jsr166, Mon Oct 11 08:30:01 2010 UTC vs.
Revision 1.156 by jsr166, Sat Oct 3 21:09:42 2015 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.PropertyPermission;
11	–	import java.util.concurrent.*;
12	–	import java.util.concurrent.atomic.AtomicReference;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.MINUTES;
11	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	+
13	+	import java.io.ByteArrayInputStream;
14	+	import java.io.ByteArrayOutputStream;
15	+	import java.io.ObjectInputStream;
16	+	import java.io.ObjectOutputStream;
17	+	import java.lang.management.ManagementFactory;
18	+	import java.lang.management.ThreadInfo;
19	+	import java.lang.management.ThreadMXBean;
20	+	import java.lang.reflect.Constructor;
21	+	import java.lang.reflect.Method;
22	+	import java.lang.reflect.Modifier;
23		import java.security.CodeSource;
24		import java.security.Permission;
25		import java.security.PermissionCollection;
#	Line 18 | Line 27 | import java.security.Permissions;
27		import java.security.Policy;
28		import java.security.ProtectionDomain;
29		import java.security.SecurityPermission;
30	+	import java.util.ArrayList;
31	+	import java.util.Arrays;
32	+	import java.util.Date;
33	+	import java.util.Enumeration;
34	+	import java.util.Iterator;
35	+	import java.util.List;
36	+	import java.util.NoSuchElementException;
37	+	import java.util.PropertyPermission;
38	+	import java.util.concurrent.BlockingQueue;
39	+	import java.util.concurrent.Callable;
40	+	import java.util.concurrent.CountDownLatch;
41	+	import java.util.concurrent.CyclicBarrier;
42	+	import java.util.concurrent.ExecutionException;
43	+	import java.util.concurrent.Executors;
44	+	import java.util.concurrent.ExecutorService;
45	+	import java.util.concurrent.ForkJoinPool;
46	+	import java.util.concurrent.Future;
47	+	import java.util.concurrent.RecursiveAction;
48	+	import java.util.concurrent.RecursiveTask;
49	+	import java.util.concurrent.RejectedExecutionHandler;
50	+	import java.util.concurrent.Semaphore;
51	+	import java.util.concurrent.ThreadFactory;
52	+	import java.util.concurrent.ThreadPoolExecutor;
53	+	import java.util.concurrent.TimeoutException;
54	+	import java.util.concurrent.atomic.AtomicReference;
55	+	import java.util.regex.Pattern;
56	+
57	+	import junit.framework.AssertionFailedError;
58	+	import junit.framework.Test;
59	+	import junit.framework.TestCase;
60	+	import junit.framework.TestResult;
61	+	import junit.framework.TestSuite;
62
63		/**
64		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 29 | Line 70 | import java.security.SecurityPermission;
70		*
71		* <ol>
72		*
73	<	* <li> All assertions in code running in generated threads must use
73	>	* <li>All assertions in code running in generated threads must use
74		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
75		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
76		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
77		* particularly recommended) for other code to use these forms too.
78		* Only the most typically used JUnit assertion methods are defined
79	<	* this way, but enough to live with.</li>
79	>	* this way, but enough to live with.
80		*
81	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
81	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
82		* to invoke {@code super.setUp} and {@code super.tearDown} within
83		* them. These methods are used to clear and check for thread
84	<	* assertion failures.</li>
84	>	* assertion failures.
85		*
86		* <li>All delays and timeouts must use one of the constants {@code
87		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 51 | Line 92 | import java.security.SecurityPermission;
92		* is always discriminable as larger than SHORT and smaller than
93		* MEDIUM.  And so on. These constants are set to conservative values,
94		* but even so, if there is ever any doubt, they can all be increased
95	<	* in one spot to rerun tests on slower platforms.</li>
95	>	* in one spot to rerun tests on slower platforms.
96		*
97	<	* <li> All threads generated must be joined inside each test case
97	>	* <li>All threads generated must be joined inside each test case
98		* method (or {@code fail} to do so) before returning from the
99		* method. The {@code joinPool} method can be used to do this when
100	<	* using Executors.</li>
100	>	* using Executors.
101		*
102		* </ol>
103		*
104	<	* <p> <b>Other notes</b>
104	>	* <p><b>Other notes</b>
105		* <ul>
106		*
107	<	* <li> Usually, there is one testcase method per JSR166 method
107	>	* <li>Usually, there is one testcase method per JSR166 method
108		* covering "normal" operation, and then as many exception-testing
109		* methods as there are exceptions the method can throw. Sometimes
110		* there are multiple tests per JSR166 method when the different
111		* "normal" behaviors differ significantly. And sometimes testcases
112		* cover multiple methods when they cannot be tested in
113	<	* isolation.</li>
113	>	* isolation.
114		*
115	<	* <li> The documentation style for testcases is to provide as javadoc
115	>	* <li>The documentation style for testcases is to provide as javadoc
116		* a simple sentence or two describing the property that the testcase
117		* method purports to test. The javadocs do not say anything about how
118	<	* the property is tested. To find out, read the code.</li>
118	>	* the property is tested. To find out, read the code.
119		*
120	<	* <li> These tests are "conformance tests", and do not attempt to
120	>	* <li>These tests are "conformance tests", and do not attempt to
121		* test throughput, latency, scalability or other performance factors
122		* (see the separate "jtreg" tests for a set intended to check these
123		* for the most central aspects of functionality.) So, most tests use
124		* the smallest sensible numbers of threads, collection sizes, etc
125	<	* needed to check basic conformance.</li>
125	>	* needed to check basic conformance.
126		*
127		* <li>The test classes currently do not declare inclusion in
128		* any particular package to simplify things for people integrating
129	<	* them in TCK test suites.</li>
129	>	* them in TCK test suites.
130		*
131	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
132	<	* runs all JSR166 unit tests.</li>
131	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
132	>	* runs all JSR166 unit tests.
133		*
134		* </ul>
135		*/
#	Line 100 | Line 141 | public class JSR166TestCase extends Test
141		Boolean.getBoolean("jsr166.expensiveTests");
142
143		/**
144	+	* If true, also run tests that are not part of the official tck
145	+	* because they test unspecified implementation details.
146	+	*/
147	+	protected static final boolean testImplementationDetails =
148	+	Boolean.getBoolean("jsr166.testImplementationDetails");
149	+
150	+	/**
151		* If true, report on stdout all "slow" tests, that is, ones that
152		* take more than profileThreshold milliseconds to execute.
153		*/
#	Line 113 | Line 161 | public class JSR166TestCase extends Test
161		private static final long profileThreshold =
162		Long.getLong("jsr166.profileThreshold", 100);
163
164	+	/**
165	+	* The number of repetitions per test (for tickling rare bugs).
166	+	*/
167	+	private static final int runsPerTest =
168	+	Integer.getInteger("jsr166.runsPerTest", 1);
169	+
170	+	/**
171	+	* The number of repetitions of the test suite (for finding leaks?).
172	+	*/
173	+	private static final int suiteRuns =
174	+	Integer.getInteger("jsr166.suiteRuns", 1);
175	+
176	+	public JSR166TestCase() { super(); }
177	+	public JSR166TestCase(String name) { super(name); }
178	+
179	+	/**
180	+	* A filter for tests to run, matching strings of the form
181	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
182	+	* Usefully combined with jsr166.runsPerTest.
183	+	*/
184	+	private static final Pattern methodFilter = methodFilter();
185	+
186	+	private static Pattern methodFilter() {
187	+	String regex = System.getProperty("jsr166.methodFilter");
188	+	return (regex == null) ? null : Pattern.compile(regex);
189	+	}
190	+
191	+	static volatile TestCase currentTestCase;
192	+	static {
193	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
194	+	for (TestCase lastTestCase = currentTestCase;;) {
195	+	try { MINUTES.sleep(10); }
196	+	catch (InterruptedException unexpected) { break; }
197	+	if (lastTestCase == currentTestCase) {
198	+	System.err.println
199	+	("Looks like we're stuck running test: "
200	+	+ lastTestCase);
201	+	dumpTestThreads();
202	+	}
203	+	lastTestCase = currentTestCase;
204	+	}}};
205	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
206	+	thread.setDaemon(true);
207	+	thread.start();
208	+	}
209	+
210	+	public void runBare() throws Throwable {
211	+	currentTestCase = this;
212	+	if (methodFilter == null
213	+	|| methodFilter.matcher(toString()).find())
214	+	super.runBare();
215	+	}
216	+
217		protected void runTest() throws Throwable {
218	<	if (profileTests)
219	<	runTestProfiled();
220	<	else
221	<	super.runTest();
218	>	for (int i = 0; i < runsPerTest; i++) {
219	>	if (profileTests)
220	>	runTestProfiled();
221	>	else
222	>	super.runTest();
223	>	}
224		}
225
226		protected void runTestProfiled() throws Throwable {
227	<	long t0 = System.nanoTime();
228	<	try {
227	>	for (int i = 0; i < 2; i++) {
228	>	long startTime = System.nanoTime();
229		super.runTest();
230	<	} finally {
231	<	long elapsedMillis =
232	<	(System.nanoTime() - t0) / (1000L * 1000L);
233	<	if (elapsedMillis >= profileThreshold)
230	>	long elapsedMillis = millisElapsedSince(startTime);
231	>	if (elapsedMillis < profileThreshold)
232	>	break;
233	>	// Never report first run of any test; treat it as a
234	>	// warmup run, notably to trigger all needed classloading,
235	>	if (i > 0)
236		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
237		}
238		}
239
240		/**
241	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
241	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
242		*/
243		public static void main(String[] args) {
244	+	main(suite(), args);
245	+	}
246	+
247	+	/**
248	+	* Runs all unit tests in the given test suite.
249	+	* Actual behavior influenced by jsr166.* system properties.
250	+	*/
251	+	static void main(Test suite, String[] args) {
252		if (useSecurityManager) {
253		System.err.println("Setting a permissive security manager");
254		Policy.setPolicy(permissivePolicy());
255		System.setSecurityManager(new SecurityManager());
256		}
257	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
258	<
259	<	Test s = suite();
260	<	for (int i = 0; i < iters; ++i) {
148	<	junit.textui.TestRunner.run(s);
257	>	for (int i = 0; i < suiteRuns; i++) {
258	>	TestResult result = junit.textui.TestRunner.run(suite);
259	>	if (!result.wasSuccessful())
260	>	System.exit(1);
261		System.gc();
262		System.runFinalization();
263		}
152	–	System.exit(0);
264		}
265
266		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 165 | Line 276 | public class JSR166TestCase extends Test
276		return suite;
277		}
278
279	+	public static void addNamedTestClasses(TestSuite suite,
280	+	String... testClassNames) {
281	+	for (String testClassName : testClassNames) {
282	+	try {
283	+	Class<?> testClass = Class.forName(testClassName);
284	+	Method m = testClass.getDeclaredMethod("suite",
285	+	new Class<?>[0]);
286	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
287	+	} catch (Exception e) {
288	+	throw new Error("Missing test class", e);
289	+	}
290	+	}
291	+	}
292	+
293	+	public static final double JAVA_CLASS_VERSION;
294	+	public static final String JAVA_SPECIFICATION_VERSION;
295	+	static {
296	+	try {
297	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
298	+	new java.security.PrivilegedAction<Double>() {
299	+	public Double run() {
300	+	return Double.valueOf(System.getProperty("java.class.version"));}});
301	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
302	+	new java.security.PrivilegedAction<String>() {
303	+	public String run() {
304	+	return System.getProperty("java.specification.version");}});
305	+	} catch (Throwable t) {
306	+	throw new Error(t);
307	+	}
308	+	}
309	+
310	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
311	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
312	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
313	+	public static boolean atLeastJava9() {
314	+	return JAVA_CLASS_VERSION >= 53.0
315	+	// As of 2015-09, java9 still uses 52.0 class file version
316	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
317	+	}
318	+	public static boolean atLeastJava10() {
319	+	return JAVA_CLASS_VERSION >= 54.0
320	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
321	+	}
322	+
323		/**
324		* Collects all JSR166 unit tests as one suite.
325		*/
326		public static Test suite() {
327	<	return newTestSuite(
327	>	// Java7+ test classes
328	>	TestSuite suite = newTestSuite(
329		ForkJoinPoolTest.suite(),
330		ForkJoinTaskTest.suite(),
331		RecursiveActionTest.suite(),
#	Line 234 | Line 390 | public class JSR166TestCase extends Test
390		TreeSetTest.suite(),
391		TreeSubMapTest.suite(),
392		TreeSubSetTest.suite());
393	+
394	+	// Java8+ test classes
395	+	if (atLeastJava8()) {
396	+	String[] java8TestClassNames = {
397	+	"Atomic8Test",
398	+	"CompletableFutureTest",
399	+	"ConcurrentHashMap8Test",
400	+	"CountedCompleterTest",
401	+	"DoubleAccumulatorTest",
402	+	"DoubleAdderTest",
403	+	"ForkJoinPool8Test",
404	+	"ForkJoinTask8Test",
405	+	"LongAccumulatorTest",
406	+	"LongAdderTest",
407	+	"SplittableRandomTest",
408	+	"StampedLockTest",
409	+	"SubmissionPublisherTest",
410	+	"ThreadLocalRandom8Test",
411	+	};
412	+	addNamedTestClasses(suite, java8TestClassNames);
413	+	}
414	+
415	+	// Java9+ test classes
416	+	if (atLeastJava9()) {
417	+	String[] java9TestClassNames = {
418	+	// Currently empty, but expecting varhandle tests
419	+	};
420	+	addNamedTestClasses(suite, java9TestClassNames);
421	+	}
422	+
423	+	return suite;
424		}
425
426	+	/** Returns list of junit-style test method names in given class. */
427	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
428	+	Method[] methods = testClass.getDeclaredMethods();
429	+	ArrayList<String> names = new ArrayList<String>(methods.length);
430	+	for (Method method : methods) {
431	+	if (method.getName().startsWith("test")
432	+	&& Modifier.isPublic(method.getModifiers())
433	+	// method.getParameterCount() requires jdk8+
434	+	&& method.getParameterTypes().length == 0) {
435	+	names.add(method.getName());
436	+	}
437	+	}
438	+	return names;
439	+	}
440	+
441	+	/**
442	+	* Returns junit-style testSuite for the given test class, but
443	+	* parameterized by passing extra data to each test.
444	+	*/
445	+	public static <ExtraData> Test parameterizedTestSuite
446	+	(Class<? extends JSR166TestCase> testClass,
447	+	Class<ExtraData> dataClass,
448	+	ExtraData data) {
449	+	try {
450	+	TestSuite suite = new TestSuite();
451	+	Constructor c =
452	+	testClass.getDeclaredConstructor(dataClass, String.class);
453	+	for (String methodName : testMethodNames(testClass))
454	+	suite.addTest((Test) c.newInstance(data, methodName));
455	+	return suite;
456	+	} catch (Exception e) {
457	+	throw new Error(e);
458	+	}
459	+	}
460	+
461	+	/**
462	+	* Returns junit-style testSuite for the jdk8 extension of the
463	+	* given test class, but parameterized by passing extra data to
464	+	* each test.  Uses reflection to allow compilation in jdk7.
465	+	*/
466	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
467	+	(Class<? extends JSR166TestCase> testClass,
468	+	Class<ExtraData> dataClass,
469	+	ExtraData data) {
470	+	if (atLeastJava8()) {
471	+	String name = testClass.getName();
472	+	String name8 = name.replaceAll("Test$", "8Test");
473	+	if (name.equals(name8)) throw new Error(name);
474	+	try {
475	+	return (Test)
476	+	Class.forName(name8)
477	+	.getMethod("testSuite", new Class[] { dataClass })
478	+	.invoke(null, data);
479	+	} catch (Exception e) {
480	+	throw new Error(e);
481	+	}
482	+	} else {
483	+	return new TestSuite();
484	+	}
485	+	}
486	+
487	+	// Delays for timing-dependent tests, in milliseconds.
488
489		public static long SHORT_DELAY_MS;
490		public static long SMALL_DELAY_MS;
491		public static long MEDIUM_DELAY_MS;
492		public static long LONG_DELAY_MS;
493
245	–
494		/**
495		* Returns the shortest timed delay. This could
496		* be reimplemented to use for example a Property.
#	Line 251 | Line 499 | public class JSR166TestCase extends Test
499		return 50;
500		}
501
254	–
502		/**
503		* Sets delays as multiples of SHORT_DELAY.
504		*/
#	Line 259 | Line 506 | public class JSR166TestCase extends Test
506		SHORT_DELAY_MS = getShortDelay();
507		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
508		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
509	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
509	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
510	>	}
511	>
512	>	/**
513	>	* Returns a timeout in milliseconds to be used in tests that
514	>	* verify that operations block or time out.
515	>	*/
516	>	long timeoutMillis() {
517	>	return SHORT_DELAY_MS / 4;
518	>	}
519	>
520	>	/**
521	>	* Returns a new Date instance representing a time at least
522	>	* delayMillis milliseconds in the future.
523	>	*/
524	>	Date delayedDate(long delayMillis) {
525	>	// Add 1 because currentTimeMillis is known to round into the past.
526	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
527		}
528
529		/**
#	Line 275 | Line 539 | public class JSR166TestCase extends Test
539		* the same test have no effect.
540		*/
541		public void threadRecordFailure(Throwable t) {
542	+	dumpTestThreads();
543		threadFailure.compareAndSet(null, t);
544		}
545
#	Line 282 | Line 547 | public class JSR166TestCase extends Test
547		setDelays();
548		}
549
550	+	void tearDownFail(String format, Object... args) {
551	+	String msg = toString() + ": " + String.format(format, args);
552	+	System.err.println(msg);
553	+	dumpTestThreads();
554	+	throw new AssertionFailedError(msg);
555	+	}
556	+
557		/**
558	+	* Extra checks that get done for all test cases.
559	+	*
560		* Triggers test case failure if any thread assertions have failed,
561		* by rethrowing, in the test harness thread, any exception recorded
562		* earlier by threadRecordFailure.
563	+	*
564	+	* Triggers test case failure if interrupt status is set in the main thread.
565		*/
566		public void tearDown() throws Exception {
567	<	Throwable t = threadFailure.get();
567	>	Throwable t = threadFailure.getAndSet(null);
568		if (t != null) {
569		if (t instanceof Error)
570		throw (Error) t;
#	Line 303 | Line 579 | public class JSR166TestCase extends Test
579		throw afe;
580		}
581		}
582	+
583	+	if (Thread.interrupted())
584	+	tearDownFail("interrupt status set in main thread");
585	+
586	+	checkForkJoinPoolThreadLeaks();
587	+	}
588	+
589	+	/**
590	+	* Finds missing try { ... } finally { joinPool(e); }
591	+	*/
592	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
593	+	Thread[] survivors = new Thread[7];
594	+	int count = Thread.enumerate(survivors);
595	+	for (int i = 0; i < count; i++) {
596	+	Thread thread = survivors[i];
597	+	String name = thread.getName();
598	+	if (name.startsWith("ForkJoinPool-")) {
599	+	// give thread some time to terminate
600	+	thread.join(LONG_DELAY_MS);
601	+	if (thread.isAlive())
602	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
603	+	thread);
604	+	}
605	+	}
606	+
607	+	if (!ForkJoinPool.commonPool()
608	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
609	+	tearDownFail("ForkJoin common pool thread stuck");
610		}
611
612		/**
#	Line 315 | Line 619 | public class JSR166TestCase extends Test
619		fail(reason);
620		} catch (AssertionFailedError t) {
621		threadRecordFailure(t);
622	<	fail(reason);
622	>	throw t;
623		}
624		}
625
#	Line 383 | Line 687 | public class JSR166TestCase extends Test
687		public void threadAssertEquals(Object x, Object y) {
688		try {
689		assertEquals(x, y);
690	<	} catch (AssertionFailedError t) {
691	<	threadRecordFailure(t);
692	<	throw t;
693	<	} catch (Throwable t) {
694	<	threadUnexpectedException(t);
690	>	} catch (AssertionFailedError fail) {
691	>	threadRecordFailure(fail);
692	>	throw fail;
693	>	} catch (Throwable fail) {
694	>	threadUnexpectedException(fail);
695		}
696		}
697
#	Line 399 | Line 703 | public class JSR166TestCase extends Test
703		public void threadAssertSame(Object x, Object y) {
704		try {
705		assertSame(x, y);
706	<	} catch (AssertionFailedError t) {
707	<	threadRecordFailure(t);
708	<	throw t;
706	>	} catch (AssertionFailedError fail) {
707	>	threadRecordFailure(fail);
708	>	throw fail;
709		}
710		}
711
#	Line 434 | Line 738 | public class JSR166TestCase extends Test
738		else {
739		AssertionFailedError afe =
740		new AssertionFailedError("unexpected exception: " + t);
741	<	t.initCause(t);
741	>	afe.initCause(t);
742		throw afe;
743		}
744		}
745
746		/**
747	+	* Delays, via Thread.sleep, for the given millisecond delay, but
748	+	* if the sleep is shorter than specified, may re-sleep or yield
749	+	* until time elapses.
750	+	*/
751	+	static void delay(long millis) throws InterruptedException {
752	+	long startTime = System.nanoTime();
753	+	long ns = millis * 1000 * 1000;
754	+	for (;;) {
755	+	if (millis > 0L)
756	+	Thread.sleep(millis);
757	+	else // too short to sleep
758	+	Thread.yield();
759	+	long d = ns - (System.nanoTime() - startTime);
760	+	if (d > 0L)
761	+	millis = d / (1000 * 1000);
762	+	else
763	+	break;
764	+	}
765	+	}
766	+
767	+	/**
768	+	* Allows use of try-with-resources with per-test thread pools.
769	+	*/
770	+	static class PoolCloser<T extends ExecutorService>
771	+	implements AutoCloseable {
772	+	public final T pool;
773	+	public PoolCloser(T pool) { this.pool = pool; }
774	+	public void close() { joinPool(pool); }
775	+	}
776	+
777	+	/**
778		* Waits out termination of a thread pool or fails doing so.
779		*/
780	<	public void joinPool(ExecutorService exec) {
780	>	static void joinPool(ExecutorService pool) {
781		try {
782	<	exec.shutdown();
783	<	assertTrue("ExecutorService did not terminate in a timely manner",
784	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
782	>	pool.shutdown();
783	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
784	>	fail("ExecutorService " + pool +
785	>	" did not terminate in a timely manner");
786		} catch (SecurityException ok) {
787		// Allowed in case test doesn't have privs
788	<	} catch (InterruptedException ie) {
788	>	} catch (InterruptedException fail) {
789	>	fail("Unexpected InterruptedException");
790	>	}
791	>	}
792	>
793	>	/** Like Runnable, but with the freedom to throw anything */
794	>	interface Action { public void run() throws Throwable; }
795	>
796	>	/**
797	>	* Runs all the given actions in parallel, failing if any fail.
798	>	* Useful for running multiple variants of tests that are
799	>	* necessarily individually slow because they must block.
800	>	*/
801	>	void testInParallel(Action ... actions) {
802	>	try (PoolCloser<ExecutorService> poolCloser
803	>	= new PoolCloser<>(Executors.newCachedThreadPool())) {
804	>	ExecutorService pool = poolCloser.pool;
805	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
806	>	for (final Action action : actions)
807	>	futures.add(pool.submit(new CheckedRunnable() {
808	>	public void realRun() throws Throwable { action.run();}}));
809	>	for (Future<?> future : futures)
810	>	try {
811	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
812	>	} catch (ExecutionException ex) {
813	>	threadUnexpectedException(ex.getCause());
814	>	} catch (Exception ex) {
815	>	threadUnexpectedException(ex);
816	>	}
817	>	}
818	>	}
819	>
820	>	/**
821	>	* A debugging tool to print stack traces of most threads, as jstack does.
822	>	* Uninteresting threads are filtered out.
823	>	*/
824	>	static void dumpTestThreads() {
825	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
826	>	System.err.println("------ stacktrace dump start ------");
827	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
828	>	String name = info.getThreadName();
829	>	if ("Signal Dispatcher".equals(name))
830	>	continue;
831	>	if ("Reference Handler".equals(name)
832	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
833	>	continue;
834	>	if ("Finalizer".equals(name)
835	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
836	>	continue;
837	>	if ("checkForWedgedTest".equals(name))
838	>	continue;
839	>	System.err.print(info);
840	>	}
841	>	System.err.println("------ stacktrace dump end ------");
842	>	}
843	>
844	>	/**
845	>	* Checks that thread does not terminate within the default
846	>	* millisecond delay of {@code timeoutMillis()}.
847	>	*/
848	>	void assertThreadStaysAlive(Thread thread) {
849	>	assertThreadStaysAlive(thread, timeoutMillis());
850	>	}
851	>
852	>	/**
853	>	* Checks that thread does not terminate within the given millisecond delay.
854	>	*/
855	>	void assertThreadStaysAlive(Thread thread, long millis) {
856	>	try {
857	>	// No need to optimize the failing case via Thread.join.
858	>	delay(millis);
859	>	assertTrue(thread.isAlive());
860	>	} catch (InterruptedException fail) {
861		fail("Unexpected InterruptedException");
862		}
863		}
864
865	+	/**
866	+	* Checks that the threads do not terminate within the default
867	+	* millisecond delay of {@code timeoutMillis()}.
868	+	*/
869	+	void assertThreadsStayAlive(Thread... threads) {
870	+	assertThreadsStayAlive(timeoutMillis(), threads);
871	+	}
872	+
873	+	/**
874	+	* Checks that the threads do not terminate within the given millisecond delay.
875	+	*/
876	+	void assertThreadsStayAlive(long millis, Thread... threads) {
877	+	try {
878	+	// No need to optimize the failing case via Thread.join.
879	+	delay(millis);
880	+	for (Thread thread : threads)
881	+	assertTrue(thread.isAlive());
882	+	} catch (InterruptedException fail) {
883	+	fail("Unexpected InterruptedException");
884	+	}
885	+	}
886	+
887	+	/**
888	+	* Checks that future.get times out, with the default timeout of
889	+	* {@code timeoutMillis()}.
890	+	*/
891	+	void assertFutureTimesOut(Future future) {
892	+	assertFutureTimesOut(future, timeoutMillis());
893	+	}
894	+
895	+	/**
896	+	* Checks that future.get times out, with the given millisecond timeout.
897	+	*/
898	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
899	+	long startTime = System.nanoTime();
900	+	try {
901	+	future.get(timeoutMillis, MILLISECONDS);
902	+	shouldThrow();
903	+	} catch (TimeoutException success) {
904	+	} catch (Exception fail) {
905	+	threadUnexpectedException(fail);
906	+	} finally { future.cancel(true); }
907	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
908	+	}
909
910		/**
911		* Fails with message "should throw exception".
#	Line 494 | Line 946 | public class JSR166TestCase extends Test
946		public static final Integer m6  = new Integer(-6);
947		public static final Integer m10 = new Integer(-10);
948
497	–
949		/**
950		* Runs Runnable r with a security policy that permits precisely
951		* the specified permissions.  If there is no current security
#	Line 506 | Line 957 | public class JSR166TestCase extends Test
957		SecurityManager sm = System.getSecurityManager();
958		if (sm == null) {
959		r.run();
960	+	}
961	+	runWithSecurityManagerWithPermissions(r, permissions);
962	+	}
963	+
964	+	/**
965	+	* Runs Runnable r with a security policy that permits precisely
966	+	* the specified permissions.  If there is no current security
967	+	* manager, a temporary one is set for the duration of the
968	+	* Runnable.  We require that any security manager permit
969	+	* getPolicy/setPolicy.
970	+	*/
971	+	public void runWithSecurityManagerWithPermissions(Runnable r,
972	+	Permission... permissions) {
973	+	SecurityManager sm = System.getSecurityManager();
974	+	if (sm == null) {
975		Policy savedPolicy = Policy.getPolicy();
976		try {
977		Policy.setPolicy(permissivePolicy());
978		System.setSecurityManager(new SecurityManager());
979	<	runWithPermissions(r, permissions);
979	>	runWithSecurityManagerWithPermissions(r, permissions);
980		} finally {
981		System.setSecurityManager(null);
982		Policy.setPolicy(savedPolicy);
#	Line 558 | Line 1024 | public class JSR166TestCase extends Test
1024		return perms.implies(p);
1025		}
1026		public void refresh() {}
1027	+	public String toString() {
1028	+	List<Permission> ps = new ArrayList<Permission>();
1029	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1030	+	ps.add(e.nextElement());
1031	+	return "AdjustablePolicy with permissions " + ps;
1032	+	}
1033		}
1034
1035		/**
#	Line 585 | Line 1057 | public class JSR166TestCase extends Test
1057		*/
1058		void sleep(long millis) {
1059		try {
1060	<	Thread.sleep(millis);
1061	<	} catch (InterruptedException ie) {
1060	>	delay(millis);
1061	>	} catch (InterruptedException fail) {
1062		AssertionFailedError afe =
1063		new AssertionFailedError("Unexpected InterruptedException");
1064	<	afe.initCause(ie);
1064	>	afe.initCause(fail);
1065		throw afe;
1066		}
1067		}
1068
1069		/**
1070	<	* Sleeps until the timeout has elapsed, or interrupted.
1071	<	* Does <em>NOT</em> throw InterruptedException.
1070	>	* Spin-waits up to the specified number of milliseconds for the given
1071	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1072	>	*/
1073	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1074	>	long startTime = System.nanoTime();
1075	>	for (;;) {
1076	>	Thread.State s = thread.getState();
1077	>	if (s == Thread.State.BLOCKED ||
1078	>	s == Thread.State.WAITING ||
1079	>	s == Thread.State.TIMED_WAITING)
1080	>	return;
1081	>	else if (s == Thread.State.TERMINATED)
1082	>	fail("Unexpected thread termination");
1083	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1084	>	threadAssertTrue(thread.isAlive());
1085	>	return;
1086	>	}
1087	>	Thread.yield();
1088	>	}
1089	>	}
1090	>
1091	>	/**
1092	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1093	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1094		*/
1095	<	void sleepTillInterrupted(long timeoutMillis) {
1095	>	void waitForThreadToEnterWaitState(Thread thread) {
1096	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1097	>	}
1098	>
1099	>	/**
1100	>	* Returns the number of milliseconds since time given by
1101	>	* startNanoTime, which must have been previously returned from a
1102	>	* call to {@link System#nanoTime()}.
1103	>	*/
1104	>	static long millisElapsedSince(long startNanoTime) {
1105	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1106	>	}
1107	>
1108	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1109	>	//         long startTime = System.nanoTime();
1110	>	//         try {
1111	>	//             r.run();
1112	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1113	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1114	>	//             throw new AssertionFailedError("did not return promptly");
1115	>	//     }
1116	>
1117	>	//     void assertTerminatesPromptly(Runnable r) {
1118	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1119	>	//     }
1120	>
1121	>	/**
1122	>	* Checks that timed f.get() returns the expected value, and does not
1123	>	* wait for the timeout to elapse before returning.
1124	>	*/
1125	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1126	>	long startTime = System.nanoTime();
1127		try {
1128	<	Thread.sleep(timeoutMillis);
1129	<	} catch (InterruptedException wakeup) {}
1128	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1129	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1130	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1131	>	throw new AssertionFailedError("timed get did not return promptly");
1132	>	}
1133	>
1134	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1135	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1136		}
1137
1138		/**
#	Line 622 | Line 1153 | public class JSR166TestCase extends Test
1153		void awaitTermination(Thread t, long timeoutMillis) {
1154		try {
1155		t.join(timeoutMillis);
1156	<	} catch (InterruptedException ie) {
1157	<	threadUnexpectedException(ie);
1156	>	} catch (InterruptedException fail) {
1157	>	threadUnexpectedException(fail);
1158		} finally {
1159	<	if (t.isAlive()) {
1159	>	if (t.getState() != Thread.State.TERMINATED) {
1160		t.interrupt();
1161		fail("Test timed out");
1162		}
1163		}
1164		}
1165
1166	+	/**
1167	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1168	+	* terminate (using {@link Thread#join(long)}), else interrupts
1169	+	* the thread (in the hope that it may terminate later) and fails.
1170	+	*/
1171	+	void awaitTermination(Thread t) {
1172	+	awaitTermination(t, LONG_DELAY_MS);
1173	+	}
1174	+
1175		// Some convenient Runnable classes
1176
1177		public abstract class CheckedRunnable implements Runnable {
#	Line 640 | Line 1180 | public class JSR166TestCase extends Test
1180		public final void run() {
1181		try {
1182		realRun();
1183	<	} catch (Throwable t) {
1184	<	threadUnexpectedException(t);
1183	>	} catch (Throwable fail) {
1184	>	threadUnexpectedException(fail);
1185		}
1186		}
1187		}
#	Line 694 | Line 1234 | public class JSR166TestCase extends Test
1234		realRun();
1235		threadShouldThrow("InterruptedException");
1236		} catch (InterruptedException success) {
1237	<	} catch (Throwable t) {
1238	<	threadUnexpectedException(t);
1237	>	threadAssertFalse(Thread.interrupted());
1238	>	} catch (Throwable fail) {
1239	>	threadUnexpectedException(fail);
1240		}
1241		}
1242		}
#	Line 706 | Line 1247 | public class JSR166TestCase extends Test
1247		public final T call() {
1248		try {
1249		return realCall();
1250	<	} catch (Throwable t) {
1251	<	threadUnexpectedException(t);
1250	>	} catch (Throwable fail) {
1251	>	threadUnexpectedException(fail);
1252		return null;
1253		}
1254		}
#	Line 723 | Line 1264 | public class JSR166TestCase extends Test
1264		threadShouldThrow("InterruptedException");
1265		return result;
1266		} catch (InterruptedException success) {
1267	<	} catch (Throwable t) {
1268	<	threadUnexpectedException(t);
1267	>	threadAssertFalse(Thread.interrupted());
1268	>	} catch (Throwable fail) {
1269	>	threadUnexpectedException(fail);
1270		}
1271		return null;
1272		}
#	Line 741 | Line 1283 | public class JSR166TestCase extends Test
1283		public static final String TEST_STRING = "a test string";
1284
1285		public static class StringTask implements Callable<String> {
1286	<	public String call() { return TEST_STRING; }
1286	>	final String value;
1287	>	public StringTask() { this(TEST_STRING); }
1288	>	public StringTask(String value) { this.value = value; }
1289	>	public String call() { return value; }
1290		}
1291
1292		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1293		return new CheckedCallable<String>() {
1294	<	public String realCall() {
1294	>	protected String realCall() {
1295		try {
1296		latch.await();
1297		} catch (InterruptedException quittingTime) {}
#	Line 754 | Line 1299 | public class JSR166TestCase extends Test
1299		}};
1300		}
1301
1302	+	public Runnable countDowner(final CountDownLatch latch) {
1303	+	return new CheckedRunnable() {
1304	+	public void realRun() throws InterruptedException {
1305	+	latch.countDown();
1306	+	}};
1307	+	}
1308	+
1309	+	public Runnable awaiter(final CountDownLatch latch) {
1310	+	return new CheckedRunnable() {
1311	+	public void realRun() throws InterruptedException {
1312	+	await(latch);
1313	+	}};
1314	+	}
1315	+
1316	+	public void await(CountDownLatch latch) {
1317	+	try {
1318	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1319	+	} catch (Throwable fail) {
1320	+	threadUnexpectedException(fail);
1321	+	}
1322	+	}
1323	+
1324	+	public void await(Semaphore semaphore) {
1325	+	try {
1326	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1327	+	} catch (Throwable fail) {
1328	+	threadUnexpectedException(fail);
1329	+	}
1330	+	}
1331	+
1332	+	//     /**
1333	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1334	+	//      */
1335	+	//     public void await(AtomicBoolean flag) {
1336	+	//         await(flag, LONG_DELAY_MS);
1337	+	//     }
1338	+
1339	+	//     /**
1340	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1341	+	//      */
1342	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1343	+	//         long startTime = System.nanoTime();
1344	+	//         while (!flag.get()) {
1345	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1346	+	//                 throw new AssertionFailedError("timed out");
1347	+	//             Thread.yield();
1348	+	//         }
1349	+	//     }
1350	+
1351		public static class NPETask implements Callable<String> {
1352		public String call() { throw new NullPointerException(); }
1353		}
#	Line 764 | Line 1358 | public class JSR166TestCase extends Test
1358
1359		public class ShortRunnable extends CheckedRunnable {
1360		protected void realRun() throws Throwable {
1361	<	Thread.sleep(SHORT_DELAY_MS);
1361	>	delay(SHORT_DELAY_MS);
1362		}
1363		}
1364
1365		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1366		protected void realRun() throws InterruptedException {
1367	<	Thread.sleep(SHORT_DELAY_MS);
1367	>	delay(SHORT_DELAY_MS);
1368		}
1369		}
1370
1371		public class SmallRunnable extends CheckedRunnable {
1372		protected void realRun() throws Throwable {
1373	<	Thread.sleep(SMALL_DELAY_MS);
1373	>	delay(SMALL_DELAY_MS);
1374		}
1375		}
1376
1377		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1378		protected void realRun() {
1379		try {
1380	<	Thread.sleep(SMALL_DELAY_MS);
1380	>	delay(SMALL_DELAY_MS);
1381		} catch (InterruptedException ok) {}
1382		}
1383		}
1384
1385		public class SmallCallable extends CheckedCallable {
1386		protected Object realCall() throws InterruptedException {
1387	<	Thread.sleep(SMALL_DELAY_MS);
1387	>	delay(SMALL_DELAY_MS);
1388		return Boolean.TRUE;
1389		}
1390		}
1391
1392		public class MediumRunnable extends CheckedRunnable {
1393		protected void realRun() throws Throwable {
1394	<	Thread.sleep(MEDIUM_DELAY_MS);
1394	>	delay(MEDIUM_DELAY_MS);
1395		}
1396		}
1397
1398		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1399		protected void realRun() throws InterruptedException {
1400	<	Thread.sleep(MEDIUM_DELAY_MS);
1400	>	delay(MEDIUM_DELAY_MS);
1401		}
1402		}
1403
#	Line 811 | Line 1405 | public class JSR166TestCase extends Test
1405		return new CheckedRunnable() {
1406		protected void realRun() {
1407		try {
1408	<	Thread.sleep(timeoutMillis);
1408	>	delay(timeoutMillis);
1409		} catch (InterruptedException ok) {}
1410		}};
1411		}
#	Line 819 | Line 1413 | public class JSR166TestCase extends Test
1413		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1414		protected void realRun() {
1415		try {
1416	<	Thread.sleep(MEDIUM_DELAY_MS);
1416	>	delay(MEDIUM_DELAY_MS);
1417		} catch (InterruptedException ok) {}
1418		}
1419		}
#	Line 827 | Line 1421 | public class JSR166TestCase extends Test
1421		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1422		protected void realRun() {
1423		try {
1424	<	Thread.sleep(LONG_DELAY_MS);
1424	>	delay(LONG_DELAY_MS);
1425		} catch (InterruptedException ok) {}
1426		}
1427		}
#	Line 851 | Line 1445 | public class JSR166TestCase extends Test
1445		public boolean isDone() { return done; }
1446		public void run() {
1447		try {
1448	<	Thread.sleep(timeoutMillis);
1448	>	delay(timeoutMillis);
1449		done = true;
1450		} catch (InterruptedException ok) {}
1451		}
#	Line 862 | Line 1456 | public class JSR166TestCase extends Test
1456		public volatile boolean done = false;
1457		public void run() {
1458		try {
1459	<	Thread.sleep(SHORT_DELAY_MS);
1459	>	delay(SHORT_DELAY_MS);
1460		done = true;
1461		} catch (InterruptedException ok) {}
1462		}
#	Line 872 | Line 1466 | public class JSR166TestCase extends Test
1466		public volatile boolean done = false;
1467		public void run() {
1468		try {
1469	<	Thread.sleep(SMALL_DELAY_MS);
1469	>	delay(SMALL_DELAY_MS);
1470		done = true;
1471		} catch (InterruptedException ok) {}
1472		}
#	Line 882 | Line 1476 | public class JSR166TestCase extends Test
1476		public volatile boolean done = false;
1477		public void run() {
1478		try {
1479	<	Thread.sleep(MEDIUM_DELAY_MS);
1479	>	delay(MEDIUM_DELAY_MS);
1480		done = true;
1481		} catch (InterruptedException ok) {}
1482		}
#	Line 892 | Line 1486 | public class JSR166TestCase extends Test
1486		public volatile boolean done = false;
1487		public void run() {
1488		try {
1489	<	Thread.sleep(LONG_DELAY_MS);
1489	>	delay(LONG_DELAY_MS);
1490		done = true;
1491		} catch (InterruptedException ok) {}
1492		}
#	Line 909 | Line 1503 | public class JSR166TestCase extends Test
1503		public volatile boolean done = false;
1504		public Object call() {
1505		try {
1506	<	Thread.sleep(SMALL_DELAY_MS);
1506	>	delay(SMALL_DELAY_MS);
1507		done = true;
1508		} catch (InterruptedException ok) {}
1509		return Boolean.TRUE;
#	Line 922 | Line 1516 | public class JSR166TestCase extends Test
1516		public abstract class CheckedRecursiveAction extends RecursiveAction {
1517		protected abstract void realCompute() throws Throwable;
1518
1519	<	public final void compute() {
1519	>	@Override protected final void compute() {
1520		try {
1521		realCompute();
1522	<	} catch (Throwable t) {
1523	<	threadUnexpectedException(t);
1522	>	} catch (Throwable fail) {
1523	>	threadUnexpectedException(fail);
1524		}
1525		}
1526		}
#	Line 937 | Line 1531 | public class JSR166TestCase extends Test
1531		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1532		protected abstract T realCompute() throws Throwable;
1533
1534	<	public final T compute() {
1534	>	@Override protected final T compute() {
1535		try {
1536		return realCompute();
1537	<	} catch (Throwable t) {
1538	<	threadUnexpectedException(t);
1537	>	} catch (Throwable fail) {
1538	>	threadUnexpectedException(fail);
1539		return null;
1540		}
1541		}
#	Line 956 | Line 1550 | public class JSR166TestCase extends Test
1550		}
1551
1552		/**
1553	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1554	<	* of throwing checked exceptions.
1553	>	* A CyclicBarrier that uses timed await and fails with
1554	>	* AssertionFailedErrors instead of throwing checked exceptions.
1555		*/
1556		public class CheckedBarrier extends CyclicBarrier {
1557		public CheckedBarrier(int parties) { super(parties); }
1558
1559		public int await() {
1560		try {
1561	<	return super.await();
1562	<	} catch (Exception e) {
1561	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1562	>	} catch (TimeoutException timedOut) {
1563	>	throw new AssertionFailedError("timed out");
1564	>	} catch (Exception fail) {
1565		AssertionFailedError afe =
1566	<	new AssertionFailedError("Unexpected exception: " + e);
1567	<	afe.initCause(e);
1566	>	new AssertionFailedError("Unexpected exception: " + fail);
1567	>	afe.initCause(fail);
1568		throw afe;
1569		}
1570		}
1571		}
1572
1573	+	void checkEmpty(BlockingQueue q) {
1574	+	try {
1575	+	assertTrue(q.isEmpty());
1576	+	assertEquals(0, q.size());
1577	+	assertNull(q.peek());
1578	+	assertNull(q.poll());
1579	+	assertNull(q.poll(0, MILLISECONDS));
1580	+	assertEquals(q.toString(), "[]");
1581	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1582	+	assertFalse(q.iterator().hasNext());
1583	+	try {
1584	+	q.element();
1585	+	shouldThrow();
1586	+	} catch (NoSuchElementException success) {}
1587	+	try {
1588	+	q.iterator().next();
1589	+	shouldThrow();
1590	+	} catch (NoSuchElementException success) {}
1591	+	try {
1592	+	q.remove();
1593	+	shouldThrow();
1594	+	} catch (NoSuchElementException success) {}
1595	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1596	+	}
1597	+
1598	+	void assertSerialEquals(Object x, Object y) {
1599	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1600	+	}
1601	+
1602	+	void assertNotSerialEquals(Object x, Object y) {
1603	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1604	+	}
1605	+
1606	+	byte[] serialBytes(Object o) {
1607	+	try {
1608	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1609	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1610	+	oos.writeObject(o);
1611	+	oos.flush();
1612	+	oos.close();
1613	+	return bos.toByteArray();
1614	+	} catch (Throwable fail) {
1615	+	threadUnexpectedException(fail);
1616	+	return new byte[0];
1617	+	}
1618	+	}
1619	+
1620	+	@SuppressWarnings("unchecked")
1621	+	<T> T serialClone(T o) {
1622	+	try {
1623	+	ObjectInputStream ois = new ObjectInputStream
1624	+	(new ByteArrayInputStream(serialBytes(o)));
1625	+	T clone = (T) ois.readObject();
1626	+	assertSame(o.getClass(), clone.getClass());
1627	+	return clone;
1628	+	} catch (Throwable fail) {
1629	+	threadUnexpectedException(fail);
1630	+	return null;
1631	+	}
1632	+	}
1633	+
1634	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1635	+	Runnable... throwingActions) {
1636	+	for (Runnable throwingAction : throwingActions) {
1637	+	boolean threw = false;
1638	+	try { throwingAction.run(); }
1639	+	catch (Throwable t) {
1640	+	threw = true;
1641	+	if (!expectedExceptionClass.isInstance(t)) {
1642	+	AssertionFailedError afe =
1643	+	new AssertionFailedError
1644	+	("Expected " + expectedExceptionClass.getName() +
1645	+	", got " + t.getClass().getName());
1646	+	afe.initCause(t);
1647	+	threadUnexpectedException(afe);
1648	+	}
1649	+	}
1650	+	if (!threw)
1651	+	shouldThrow(expectedExceptionClass.getName());
1652	+	}
1653	+	}
1654	+
1655	+	public void assertIteratorExhausted(Iterator<?> it) {
1656	+	try {
1657	+	it.next();
1658	+	shouldThrow();
1659	+	} catch (NoSuchElementException success) {}
1660	+	assertFalse(it.hasNext());
1661	+	}
1662		}

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