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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 1.134 by jsr166, Sun Jun 14 20:58:14 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.NANOSECONDS;
11	+
12	+	import java.io.ByteArrayInputStream;
13	+	import java.io.ByteArrayOutputStream;
14	+	import java.io.ObjectInputStream;
15	+	import java.io.ObjectOutputStream;
16	+	import java.lang.management.ManagementFactory;
17	+	import java.lang.management.ThreadInfo;
18	+	import java.lang.reflect.Constructor;
19	+	import java.lang.reflect.Method;
20	+	import java.lang.reflect.Modifier;
21		import java.security.CodeSource;
22		import java.security.Permission;
23		import java.security.PermissionCollection;
#	Line 18 | Line 25 | import java.security.Permissions;
25		import java.security.Policy;
26		import java.security.ProtectionDomain;
27		import java.security.SecurityPermission;
28	+	import java.util.ArrayList;
29	+	import java.util.Arrays;
30	+	import java.util.Date;
31	+	import java.util.Enumeration;
32	+	import java.util.Iterator;
33	+	import java.util.List;
34	+	import java.util.NoSuchElementException;
35	+	import java.util.PropertyPermission;
36	+	import java.util.concurrent.BlockingQueue;
37	+	import java.util.concurrent.Callable;
38	+	import java.util.concurrent.CountDownLatch;
39	+	import java.util.concurrent.CyclicBarrier;
40	+	import java.util.concurrent.ExecutorService;
41	+	import java.util.concurrent.Future;
42	+	import java.util.concurrent.RecursiveAction;
43	+	import java.util.concurrent.RecursiveTask;
44	+	import java.util.concurrent.RejectedExecutionHandler;
45	+	import java.util.concurrent.Semaphore;
46	+	import java.util.concurrent.ThreadFactory;
47	+	import java.util.concurrent.ThreadPoolExecutor;
48	+	import java.util.concurrent.TimeoutException;
49	+	import java.util.concurrent.atomic.AtomicReference;
50	+	import java.util.regex.Pattern;
51	+
52	+	import junit.framework.AssertionFailedError;
53	+	import junit.framework.Test;
54	+	import junit.framework.TestCase;
55	+	import junit.framework.TestResult;
56	+	import junit.framework.TestSuite;
57
58		/**
59		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 60 | Line 96 | import java.security.SecurityPermission;
96		*
97		* </ol>
98		*
99	<	* <p> <b>Other notes</b>
99	>	* <p><b>Other notes</b>
100		* <ul>
101		*
102		* <li> Usually, there is one testcase method per JSR166 method
#	Line 100 | Line 136 | public class JSR166TestCase extends Test
136		Boolean.getBoolean("jsr166.expensiveTests");
137
138		/**
139	+	* If true, also run tests that are not part of the official tck
140	+	* because they test unspecified implementation details.
141	+	*/
142	+	protected static final boolean testImplementationDetails =
143	+	Boolean.getBoolean("jsr166.testImplementationDetails");
144	+
145	+	/**
146		* If true, report on stdout all "slow" tests, that is, ones that
147		* take more than profileThreshold milliseconds to execute.
148		*/
#	Line 113 | Line 156 | public class JSR166TestCase extends Test
156		private static final long profileThreshold =
157		Long.getLong("jsr166.profileThreshold", 100);
158
159	+	/**
160	+	* The number of repetitions per test (for tickling rare bugs).
161	+	*/
162	+	private static final int runsPerTest =
163	+	Integer.getInteger("jsr166.runsPerTest", 1);
164	+
165	+	/**
166	+	* The number of repetitions of the test suite (for finding leaks?).
167	+	*/
168	+	private static final int suiteRuns =
169	+	Integer.getInteger("jsr166.suiteRuns", 1);
170	+
171	+	public JSR166TestCase() { super(); }
172	+	public JSR166TestCase(String name) { super(name); }
173	+
174	+	/**
175	+	* A filter for tests to run, matching strings of the form
176	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
177	+	* Usefully combined with jsr166.runsPerTest.
178	+	*/
179	+	private static final Pattern methodFilter = methodFilter();
180	+
181	+	private static Pattern methodFilter() {
182	+	String regex = System.getProperty("jsr166.methodFilter");
183	+	return (regex == null) ? null : Pattern.compile(regex);
184	+	}
185	+
186		protected void runTest() throws Throwable {
187	<	if (profileTests)
188	<	runTestProfiled();
189	<	else
190	<	super.runTest();
187	>	if (methodFilter == null
188	>	|| methodFilter.matcher(toString()).find()) {
189	>	for (int i = 0; i < runsPerTest; i++) {
190	>	if (profileTests)
191	>	runTestProfiled();
192	>	else
193	>	super.runTest();
194	>	}
195	>	}
196		}
197
198		protected void runTestProfiled() throws Throwable {
199	+	// Warmup run, notably to trigger all needed classloading.
200	+	super.runTest();
201		long t0 = System.nanoTime();
202		try {
203		super.runTest();
204		} finally {
205	<	long elapsedMillis =
129	<	(System.nanoTime() - t0) / (1000L * 1000L);
205	>	long elapsedMillis = millisElapsedSince(t0);
206		if (elapsedMillis >= profileThreshold)
207		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
208		}
209		}
210
211		/**
212	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
212	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
213		*/
214		public static void main(String[] args) {
215	+	main(suite(), args);
216	+	}
217	+
218	+	/**
219	+	* Runs all unit tests in the given test suite.
220	+	* Actual behavior influenced by jsr166.* system properties.
221	+	*/
222	+	static void main(Test suite, String[] args) {
223		if (useSecurityManager) {
224		System.err.println("Setting a permissive security manager");
225		Policy.setPolicy(permissivePolicy());
226		System.setSecurityManager(new SecurityManager());
227		}
228	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
229	<
230	<	Test s = suite();
231	<	for (int i = 0; i < iters; ++i) {
148	<	junit.textui.TestRunner.run(s);
228	>	for (int i = 0; i < suiteRuns; i++) {
229	>	TestResult result = junit.textui.TestRunner.run(suite);
230	>	if (!result.wasSuccessful())
231	>	System.exit(1);
232		System.gc();
233		System.runFinalization();
234		}
152	–	System.exit(0);
235		}
236
237		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 165 | Line 247 | public class JSR166TestCase extends Test
247		return suite;
248		}
249
250	+	public static void addNamedTestClasses(TestSuite suite,
251	+	String... testClassNames) {
252	+	for (String testClassName : testClassNames) {
253	+	try {
254	+	Class<?> testClass = Class.forName(testClassName);
255	+	Method m = testClass.getDeclaredMethod("suite",
256	+	new Class<?>[0]);
257	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
258	+	} catch (Exception e) {
259	+	throw new Error("Missing test class", e);
260	+	}
261	+	}
262	+	}
263	+
264	+	public static final double JAVA_CLASS_VERSION;
265	+	public static final String JAVA_SPECIFICATION_VERSION;
266	+	static {
267	+	try {
268	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
269	+	new java.security.PrivilegedAction<Double>() {
270	+	public Double run() {
271	+	return Double.valueOf(System.getProperty("java.class.version"));}});
272	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
273	+	new java.security.PrivilegedAction<String>() {
274	+	public String run() {
275	+	return System.getProperty("java.specification.version");}});
276	+	} catch (Throwable t) {
277	+	throw new Error(t);
278	+	}
279	+	}
280	+
281	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
282	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
283	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
284	+	public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
285	+
286		/**
287		* Collects all JSR166 unit tests as one suite.
288		*/
289		public static Test suite() {
290	<	return newTestSuite(
290	>	// Java7+ test classes
291	>	TestSuite suite = newTestSuite(
292		ForkJoinPoolTest.suite(),
293		ForkJoinTaskTest.suite(),
294		RecursiveActionTest.suite(),
#	Line 234 | Line 353 | public class JSR166TestCase extends Test
353		TreeSetTest.suite(),
354		TreeSubMapTest.suite(),
355		TreeSubSetTest.suite());
356	+
357	+	// Java8+ test classes
358	+	if (atLeastJava8()) {
359	+	String[] java8TestClassNames = {
360	+	"Atomic8Test",
361	+	"CompletableFutureTest",
362	+	"ConcurrentHashMap8Test",
363	+	"CountedCompleterTest",
364	+	"DoubleAccumulatorTest",
365	+	"DoubleAdderTest",
366	+	"ForkJoinPool8Test",
367	+	"ForkJoinTask8Test",
368	+	"LongAccumulatorTest",
369	+	"LongAdderTest",
370	+	"SplittableRandomTest",
371	+	"StampedLockTest",
372	+	"ThreadLocalRandom8Test",
373	+	};
374	+	addNamedTestClasses(suite, java8TestClassNames);
375	+	}
376	+
377	+	// Java9+ test classes
378	+	if (atLeastJava9()) {
379	+	String[] java9TestClassNames = {
380	+	"ThreadPoolExecutor9Test",
381	+	};
382	+	addNamedTestClasses(suite, java9TestClassNames);
383	+	}
384	+
385	+	return suite;
386		}
387
388	+	/** Returns list of junit-style test method names in given class. */
389	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
390	+	Method[] methods = testClass.getDeclaredMethods();
391	+	ArrayList<String> names = new ArrayList<String>(methods.length);
392	+	for (Method method : methods) {
393	+	if (method.getName().startsWith("test")
394	+	&& Modifier.isPublic(method.getModifiers())
395	+	// method.getParameterCount() requires jdk8+
396	+	&& method.getParameterTypes().length == 0) {
397	+	names.add(method.getName());
398	+	}
399	+	}
400	+	return names;
401	+	}
402	+
403	+	/**
404	+	* Returns junit-style testSuite for the given test class, but
405	+	* parameterized by passing extra data to each test.
406	+	*/
407	+	public static <ExtraData> Test parameterizedTestSuite
408	+	(Class<? extends JSR166TestCase> testClass,
409	+	Class<ExtraData> dataClass,
410	+	ExtraData data) {
411	+	try {
412	+	TestSuite suite = new TestSuite();
413	+	Constructor c =
414	+	testClass.getDeclaredConstructor(dataClass, String.class);
415	+	for (String methodName : testMethodNames(testClass))
416	+	suite.addTest((Test) c.newInstance(data, methodName));
417	+	return suite;
418	+	} catch (Exception e) {
419	+	throw new Error(e);
420	+	}
421	+	}
422	+
423	+	/**
424	+	* Returns junit-style testSuite for the jdk8 extension of the
425	+	* given test class, but parameterized by passing extra data to
426	+	* each test.  Uses reflection to allow compilation in jdk7.
427	+	*/
428	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
429	+	(Class<? extends JSR166TestCase> testClass,
430	+	Class<ExtraData> dataClass,
431	+	ExtraData data) {
432	+	if (atLeastJava8()) {
433	+	String name = testClass.getName();
434	+	String name8 = name.replaceAll("Test$", "8Test");
435	+	if (name.equals(name8)) throw new Error(name);
436	+	try {
437	+	return (Test)
438	+	Class.forName(name8)
439	+	.getMethod("testSuite", new Class[] { dataClass })
440	+	.invoke(null, data);
441	+	} catch (Exception e) {
442	+	throw new Error(e);
443	+	}
444	+	} else {
445	+	return new TestSuite();
446	+	}
447	+
448	+	}
449	+
450	+	// Delays for timing-dependent tests, in milliseconds.
451
452		public static long SHORT_DELAY_MS;
453		public static long SMALL_DELAY_MS;
454		public static long MEDIUM_DELAY_MS;
455		public static long LONG_DELAY_MS;
456
245	–
457		/**
458		* Returns the shortest timed delay. This could
459		* be reimplemented to use for example a Property.
#	Line 251 | Line 462 | public class JSR166TestCase extends Test
462		return 50;
463		}
464
254	–
465		/**
466		* Sets delays as multiples of SHORT_DELAY.
467		*/
#	Line 259 | Line 469 | public class JSR166TestCase extends Test
469		SHORT_DELAY_MS = getShortDelay();
470		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
471		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
472	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
472	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
473	>	}
474	>
475	>	/**
476	>	* Returns a timeout in milliseconds to be used in tests that
477	>	* verify that operations block or time out.
478	>	*/
479	>	long timeoutMillis() {
480	>	return SHORT_DELAY_MS / 4;
481	>	}
482	>
483	>	/**
484	>	* Returns a new Date instance representing a time delayMillis
485	>	* milliseconds in the future.
486	>	*/
487	>	Date delayedDate(long delayMillis) {
488	>	return new Date(System.currentTimeMillis() + delayMillis);
489		}
490
491		/**
#	Line 283 | Line 509 | public class JSR166TestCase extends Test
509		}
510
511		/**
512	+	* Extra checks that get done for all test cases.
513	+	*
514		* Triggers test case failure if any thread assertions have failed,
515		* by rethrowing, in the test harness thread, any exception recorded
516		* earlier by threadRecordFailure.
517	+	*
518	+	* Triggers test case failure if interrupt status is set in the main thread.
519		*/
520		public void tearDown() throws Exception {
521	<	Throwable t = threadFailure.get();
521	>	Throwable t = threadFailure.getAndSet(null);
522		if (t != null) {
523		if (t instanceof Error)
524		throw (Error) t;
#	Line 303 | Line 533 | public class JSR166TestCase extends Test
533		throw afe;
534		}
535		}
536	+
537	+	if (Thread.interrupted())
538	+	throw new AssertionFailedError("interrupt status set in main thread");
539	+
540	+	checkForkJoinPoolThreadLeaks();
541	+	}
542	+
543	+	/**
544	+	* Finds missing try { ... } finally { joinPool(e); }
545	+	*/
546	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
547	+	Thread[] survivors = new Thread[5];
548	+	int count = Thread.enumerate(survivors);
549	+	for (int i = 0; i < count; i++) {
550	+	Thread thread = survivors[i];
551	+	String name = thread.getName();
552	+	if (name.startsWith("ForkJoinPool-")) {
553	+	// give thread some time to terminate
554	+	thread.join(LONG_DELAY_MS);
555	+	if (!thread.isAlive()) continue;
556	+	throw new AssertionFailedError
557	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
558	+	toString(), name));
559	+	}
560	+	}
561		}
562
563		/**
#	Line 383 | Line 638 | public class JSR166TestCase extends Test
638		public void threadAssertEquals(Object x, Object y) {
639		try {
640		assertEquals(x, y);
641	<	} catch (AssertionFailedError t) {
642	<	threadRecordFailure(t);
643	<	throw t;
644	<	} catch (Throwable t) {
645	<	threadUnexpectedException(t);
641	>	} catch (AssertionFailedError fail) {
642	>	threadRecordFailure(fail);
643	>	throw fail;
644	>	} catch (Throwable fail) {
645	>	threadUnexpectedException(fail);
646		}
647		}
648
#	Line 399 | Line 654 | public class JSR166TestCase extends Test
654		public void threadAssertSame(Object x, Object y) {
655		try {
656		assertSame(x, y);
657	<	} catch (AssertionFailedError t) {
658	<	threadRecordFailure(t);
659	<	throw t;
657	>	} catch (AssertionFailedError fail) {
658	>	threadRecordFailure(fail);
659	>	throw fail;
660		}
661		}
662
#	Line 434 | Line 689 | public class JSR166TestCase extends Test
689		else {
690		AssertionFailedError afe =
691		new AssertionFailedError("unexpected exception: " + t);
692	<	t.initCause(t);
692	>	afe.initCause(t);
693		throw afe;
694		}
695		}
696
697		/**
698	+	* Delays, via Thread.sleep, for the given millisecond delay, but
699	+	* if the sleep is shorter than specified, may re-sleep or yield
700	+	* until time elapses.
701	+	*/
702	+	static void delay(long millis) throws InterruptedException {
703	+	long startTime = System.nanoTime();
704	+	long ns = millis * 1000 * 1000;
705	+	for (;;) {
706	+	if (millis > 0L)
707	+	Thread.sleep(millis);
708	+	else // too short to sleep
709	+	Thread.yield();
710	+	long d = ns - (System.nanoTime() - startTime);
711	+	if (d > 0L)
712	+	millis = d / (1000 * 1000);
713	+	else
714	+	break;
715	+	}
716	+	}
717	+
718	+	/**
719		* Waits out termination of a thread pool or fails doing so.
720		*/
721	<	public void joinPool(ExecutorService exec) {
721	>	void joinPool(ExecutorService exec) {
722		try {
723		exec.shutdown();
724	<	assertTrue("ExecutorService did not terminate in a timely manner",
725	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
724	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
725	>	fail("ExecutorService " + exec +
726	>	" did not terminate in a timely manner");
727		} catch (SecurityException ok) {
728		// Allowed in case test doesn't have privs
729	<	} catch (InterruptedException ie) {
729	>	} catch (InterruptedException fail) {
730		fail("Unexpected InterruptedException");
731		}
732		}
733
734	+	/**
735	+	* A debugging tool to print all stack traces, as jstack does.
736	+	*/
737	+	static void printAllStackTraces() {
738	+	for (ThreadInfo info :
739	+	ManagementFactory.getThreadMXBean()
740	+	.dumpAllThreads(true, true))
741	+	System.err.print(info);
742	+	}
743	+
744	+	/**
745	+	* Checks that thread does not terminate within the default
746	+	* millisecond delay of {@code timeoutMillis()}.
747	+	*/
748	+	void assertThreadStaysAlive(Thread thread) {
749	+	assertThreadStaysAlive(thread, timeoutMillis());
750	+	}
751	+
752	+	/**
753	+	* Checks that thread does not terminate within the given millisecond delay.
754	+	*/
755	+	void assertThreadStaysAlive(Thread thread, long millis) {
756	+	try {
757	+	// No need to optimize the failing case via Thread.join.
758	+	delay(millis);
759	+	assertTrue(thread.isAlive());
760	+	} catch (InterruptedException fail) {
761	+	fail("Unexpected InterruptedException");
762	+	}
763	+	}
764	+
765	+	/**
766	+	* Checks that the threads do not terminate within the default
767	+	* millisecond delay of {@code timeoutMillis()}.
768	+	*/
769	+	void assertThreadsStayAlive(Thread... threads) {
770	+	assertThreadsStayAlive(timeoutMillis(), threads);
771	+	}
772	+
773	+	/**
774	+	* Checks that the threads do not terminate within the given millisecond delay.
775	+	*/
776	+	void assertThreadsStayAlive(long millis, Thread... threads) {
777	+	try {
778	+	// No need to optimize the failing case via Thread.join.
779	+	delay(millis);
780	+	for (Thread thread : threads)
781	+	assertTrue(thread.isAlive());
782	+	} catch (InterruptedException fail) {
783	+	fail("Unexpected InterruptedException");
784	+	}
785	+	}
786	+
787	+	/**
788	+	* Checks that future.get times out, with the default timeout of
789	+	* {@code timeoutMillis()}.
790	+	*/
791	+	void assertFutureTimesOut(Future future) {
792	+	assertFutureTimesOut(future, timeoutMillis());
793	+	}
794	+
795	+	/**
796	+	* Checks that future.get times out, with the given millisecond timeout.
797	+	*/
798	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
799	+	long startTime = System.nanoTime();
800	+	try {
801	+	future.get(timeoutMillis, MILLISECONDS);
802	+	shouldThrow();
803	+	} catch (TimeoutException success) {
804	+	} catch (Exception fail) {
805	+	threadUnexpectedException(fail);
806	+	} finally { future.cancel(true); }
807	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
808	+	}
809
810		/**
811		* Fails with message "should throw exception".
#	Line 494 | Line 846 | public class JSR166TestCase extends Test
846		public static final Integer m6  = new Integer(-6);
847		public static final Integer m10 = new Integer(-10);
848
497	–
849		/**
850		* Runs Runnable r with a security policy that permits precisely
851		* the specified permissions.  If there is no current security
#	Line 506 | Line 857 | public class JSR166TestCase extends Test
857		SecurityManager sm = System.getSecurityManager();
858		if (sm == null) {
859		r.run();
860	+	}
861	+	runWithSecurityManagerWithPermissions(r, permissions);
862	+	}
863	+
864	+	/**
865	+	* Runs Runnable r with a security policy that permits precisely
866	+	* the specified permissions.  If there is no current security
867	+	* manager, a temporary one is set for the duration of the
868	+	* Runnable.  We require that any security manager permit
869	+	* getPolicy/setPolicy.
870	+	*/
871	+	public void runWithSecurityManagerWithPermissions(Runnable r,
872	+	Permission... permissions) {
873	+	SecurityManager sm = System.getSecurityManager();
874	+	if (sm == null) {
875		Policy savedPolicy = Policy.getPolicy();
876		try {
877		Policy.setPolicy(permissivePolicy());
878		System.setSecurityManager(new SecurityManager());
879	<	runWithPermissions(r, permissions);
879	>	runWithSecurityManagerWithPermissions(r, permissions);
880		} finally {
881		System.setSecurityManager(null);
882		Policy.setPolicy(savedPolicy);
#	Line 558 | Line 924 | public class JSR166TestCase extends Test
924		return perms.implies(p);
925		}
926		public void refresh() {}
927	+	public String toString() {
928	+	List<Permission> ps = new ArrayList<Permission>();
929	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
930	+	ps.add(e.nextElement());
931	+	return "AdjustablePolicy with permissions " + ps;
932	+	}
933		}
934
935		/**
#	Line 585 | Line 957 | public class JSR166TestCase extends Test
957		*/
958		void sleep(long millis) {
959		try {
960	<	Thread.sleep(millis);
961	<	} catch (InterruptedException ie) {
960	>	delay(millis);
961	>	} catch (InterruptedException fail) {
962		AssertionFailedError afe =
963		new AssertionFailedError("Unexpected InterruptedException");
964	<	afe.initCause(ie);
964	>	afe.initCause(fail);
965		throw afe;
966		}
967		}
968
969		/**
970	<	* Sleeps until the timeout has elapsed, or interrupted.
971	<	* Does <em>NOT</em> throw InterruptedException.
970	>	* Spin-waits up to the specified number of milliseconds for the given
971	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
972	>	*/
973	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
974	>	long startTime = System.nanoTime();
975	>	for (;;) {
976	>	Thread.State s = thread.getState();
977	>	if (s == Thread.State.BLOCKED ||
978	>	s == Thread.State.WAITING ||
979	>	s == Thread.State.TIMED_WAITING)
980	>	return;
981	>	else if (s == Thread.State.TERMINATED)
982	>	fail("Unexpected thread termination");
983	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
984	>	threadAssertTrue(thread.isAlive());
985	>	return;
986	>	}
987	>	Thread.yield();
988	>	}
989	>	}
990	>
991	>	/**
992	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
993	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
994	>	*/
995	>	void waitForThreadToEnterWaitState(Thread thread) {
996	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
997	>	}
998	>
999	>	/**
1000	>	* Returns the number of milliseconds since time given by
1001	>	* startNanoTime, which must have been previously returned from a
1002	>	* call to {@link System#nanoTime()}.
1003	>	*/
1004	>	static long millisElapsedSince(long startNanoTime) {
1005	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1006	>	}
1007	>
1008	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1009	>	//         long startTime = System.nanoTime();
1010	>	//         try {
1011	>	//             r.run();
1012	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1013	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1014	>	//             throw new AssertionFailedError("did not return promptly");
1015	>	//     }
1016	>
1017	>	//     void assertTerminatesPromptly(Runnable r) {
1018	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1019	>	//     }
1020	>
1021	>	/**
1022	>	* Checks that timed f.get() returns the expected value, and does not
1023	>	* wait for the timeout to elapse before returning.
1024		*/
1025	<	void sleepTillInterrupted(long timeoutMillis) {
1025	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1026	>	long startTime = System.nanoTime();
1027		try {
1028	<	Thread.sleep(timeoutMillis);
1029	<	} catch (InterruptedException wakeup) {}
1028	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1029	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1030	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1031	>	throw new AssertionFailedError("timed get did not return promptly");
1032	>	}
1033	>
1034	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1035	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1036		}
1037
1038		/**
#	Line 622 | Line 1053 | public class JSR166TestCase extends Test
1053		void awaitTermination(Thread t, long timeoutMillis) {
1054		try {
1055		t.join(timeoutMillis);
1056	<	} catch (InterruptedException ie) {
1057	<	threadUnexpectedException(ie);
1056	>	} catch (InterruptedException fail) {
1057	>	threadUnexpectedException(fail);
1058		} finally {
1059	<	if (t.isAlive()) {
1059	>	if (t.getState() != Thread.State.TERMINATED) {
1060		t.interrupt();
1061		fail("Test timed out");
1062		}
1063		}
1064		}
1065
1066	+	/**
1067	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1068	+	* terminate (using {@link Thread#join(long)}), else interrupts
1069	+	* the thread (in the hope that it may terminate later) and fails.
1070	+	*/
1071	+	void awaitTermination(Thread t) {
1072	+	awaitTermination(t, LONG_DELAY_MS);
1073	+	}
1074	+
1075		// Some convenient Runnable classes
1076
1077		public abstract class CheckedRunnable implements Runnable {
#	Line 640 | Line 1080 | public class JSR166TestCase extends Test
1080		public final void run() {
1081		try {
1082		realRun();
1083	<	} catch (Throwable t) {
1084	<	threadUnexpectedException(t);
1083	>	} catch (Throwable fail) {
1084	>	threadUnexpectedException(fail);
1085		}
1086		}
1087		}
#	Line 694 | Line 1134 | public class JSR166TestCase extends Test
1134		realRun();
1135		threadShouldThrow("InterruptedException");
1136		} catch (InterruptedException success) {
1137	<	} catch (Throwable t) {
1138	<	threadUnexpectedException(t);
1137	>	threadAssertFalse(Thread.interrupted());
1138	>	} catch (Throwable fail) {
1139	>	threadUnexpectedException(fail);
1140		}
1141		}
1142		}
#	Line 706 | Line 1147 | public class JSR166TestCase extends Test
1147		public final T call() {
1148		try {
1149		return realCall();
1150	<	} catch (Throwable t) {
1151	<	threadUnexpectedException(t);
1150	>	} catch (Throwable fail) {
1151	>	threadUnexpectedException(fail);
1152		return null;
1153		}
1154		}
#	Line 723 | Line 1164 | public class JSR166TestCase extends Test
1164		threadShouldThrow("InterruptedException");
1165		return result;
1166		} catch (InterruptedException success) {
1167	<	} catch (Throwable t) {
1168	<	threadUnexpectedException(t);
1167	>	threadAssertFalse(Thread.interrupted());
1168	>	} catch (Throwable fail) {
1169	>	threadUnexpectedException(fail);
1170		}
1171		return null;
1172		}
#	Line 746 | Line 1188 | public class JSR166TestCase extends Test
1188
1189		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1190		return new CheckedCallable<String>() {
1191	<	public String realCall() {
1191	>	protected String realCall() {
1192		try {
1193		latch.await();
1194		} catch (InterruptedException quittingTime) {}
#	Line 754 | Line 1196 | public class JSR166TestCase extends Test
1196		}};
1197		}
1198
1199	+	public Runnable awaiter(final CountDownLatch latch) {
1200	+	return new CheckedRunnable() {
1201	+	public void realRun() throws InterruptedException {
1202	+	await(latch);
1203	+	}};
1204	+	}
1205	+
1206	+	public void await(CountDownLatch latch) {
1207	+	try {
1208	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1209	+	} catch (Throwable fail) {
1210	+	threadUnexpectedException(fail);
1211	+	}
1212	+	}
1213	+
1214	+	public void await(Semaphore semaphore) {
1215	+	try {
1216	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1217	+	} catch (Throwable fail) {
1218	+	threadUnexpectedException(fail);
1219	+	}
1220	+	}
1221	+
1222	+	//     /**
1223	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1224	+	//      */
1225	+	//     public void await(AtomicBoolean flag) {
1226	+	//         await(flag, LONG_DELAY_MS);
1227	+	//     }
1228	+
1229	+	//     /**
1230	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1231	+	//      */
1232	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1233	+	//         long startTime = System.nanoTime();
1234	+	//         while (!flag.get()) {
1235	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1236	+	//                 throw new AssertionFailedError("timed out");
1237	+	//             Thread.yield();
1238	+	//         }
1239	+	//     }
1240	+
1241		public static class NPETask implements Callable<String> {
1242		public String call() { throw new NullPointerException(); }
1243		}
#	Line 764 | Line 1248 | public class JSR166TestCase extends Test
1248
1249		public class ShortRunnable extends CheckedRunnable {
1250		protected void realRun() throws Throwable {
1251	<	Thread.sleep(SHORT_DELAY_MS);
1251	>	delay(SHORT_DELAY_MS);
1252		}
1253		}
1254
1255		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1256		protected void realRun() throws InterruptedException {
1257	<	Thread.sleep(SHORT_DELAY_MS);
1257	>	delay(SHORT_DELAY_MS);
1258		}
1259		}
1260
1261		public class SmallRunnable extends CheckedRunnable {
1262		protected void realRun() throws Throwable {
1263	<	Thread.sleep(SMALL_DELAY_MS);
1263	>	delay(SMALL_DELAY_MS);
1264		}
1265		}
1266
1267		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1268		protected void realRun() {
1269		try {
1270	<	Thread.sleep(SMALL_DELAY_MS);
1270	>	delay(SMALL_DELAY_MS);
1271		} catch (InterruptedException ok) {}
1272		}
1273		}
1274
1275		public class SmallCallable extends CheckedCallable {
1276		protected Object realCall() throws InterruptedException {
1277	<	Thread.sleep(SMALL_DELAY_MS);
1277	>	delay(SMALL_DELAY_MS);
1278		return Boolean.TRUE;
1279		}
1280		}
1281
1282		public class MediumRunnable extends CheckedRunnable {
1283		protected void realRun() throws Throwable {
1284	<	Thread.sleep(MEDIUM_DELAY_MS);
1284	>	delay(MEDIUM_DELAY_MS);
1285		}
1286		}
1287
1288		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1289		protected void realRun() throws InterruptedException {
1290	<	Thread.sleep(MEDIUM_DELAY_MS);
1290	>	delay(MEDIUM_DELAY_MS);
1291		}
1292		}
1293
#	Line 811 | Line 1295 | public class JSR166TestCase extends Test
1295		return new CheckedRunnable() {
1296		protected void realRun() {
1297		try {
1298	<	Thread.sleep(timeoutMillis);
1298	>	delay(timeoutMillis);
1299		} catch (InterruptedException ok) {}
1300		}};
1301		}
#	Line 819 | Line 1303 | public class JSR166TestCase extends Test
1303		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1304		protected void realRun() {
1305		try {
1306	<	Thread.sleep(MEDIUM_DELAY_MS);
1306	>	delay(MEDIUM_DELAY_MS);
1307		} catch (InterruptedException ok) {}
1308		}
1309		}
#	Line 827 | Line 1311 | public class JSR166TestCase extends Test
1311		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1312		protected void realRun() {
1313		try {
1314	<	Thread.sleep(LONG_DELAY_MS);
1314	>	delay(LONG_DELAY_MS);
1315		} catch (InterruptedException ok) {}
1316		}
1317		}
#	Line 851 | Line 1335 | public class JSR166TestCase extends Test
1335		public boolean isDone() { return done; }
1336		public void run() {
1337		try {
1338	<	Thread.sleep(timeoutMillis);
1338	>	delay(timeoutMillis);
1339		done = true;
1340		} catch (InterruptedException ok) {}
1341		}
#	Line 862 | Line 1346 | public class JSR166TestCase extends Test
1346		public volatile boolean done = false;
1347		public void run() {
1348		try {
1349	<	Thread.sleep(SHORT_DELAY_MS);
1349	>	delay(SHORT_DELAY_MS);
1350		done = true;
1351		} catch (InterruptedException ok) {}
1352		}
#	Line 872 | Line 1356 | public class JSR166TestCase extends Test
1356		public volatile boolean done = false;
1357		public void run() {
1358		try {
1359	<	Thread.sleep(SMALL_DELAY_MS);
1359	>	delay(SMALL_DELAY_MS);
1360		done = true;
1361		} catch (InterruptedException ok) {}
1362		}
#	Line 882 | Line 1366 | public class JSR166TestCase extends Test
1366		public volatile boolean done = false;
1367		public void run() {
1368		try {
1369	<	Thread.sleep(MEDIUM_DELAY_MS);
1369	>	delay(MEDIUM_DELAY_MS);
1370		done = true;
1371		} catch (InterruptedException ok) {}
1372		}
#	Line 892 | Line 1376 | public class JSR166TestCase extends Test
1376		public volatile boolean done = false;
1377		public void run() {
1378		try {
1379	<	Thread.sleep(LONG_DELAY_MS);
1379	>	delay(LONG_DELAY_MS);
1380		done = true;
1381		} catch (InterruptedException ok) {}
1382		}
#	Line 909 | Line 1393 | public class JSR166TestCase extends Test
1393		public volatile boolean done = false;
1394		public Object call() {
1395		try {
1396	<	Thread.sleep(SMALL_DELAY_MS);
1396	>	delay(SMALL_DELAY_MS);
1397		done = true;
1398		} catch (InterruptedException ok) {}
1399		return Boolean.TRUE;
#	Line 922 | Line 1406 | public class JSR166TestCase extends Test
1406		public abstract class CheckedRecursiveAction extends RecursiveAction {
1407		protected abstract void realCompute() throws Throwable;
1408
1409	<	public final void compute() {
1409	>	@Override protected final void compute() {
1410		try {
1411		realCompute();
1412	<	} catch (Throwable t) {
1413	<	threadUnexpectedException(t);
1412	>	} catch (Throwable fail) {
1413	>	threadUnexpectedException(fail);
1414		}
1415		}
1416		}
#	Line 937 | Line 1421 | public class JSR166TestCase extends Test
1421		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1422		protected abstract T realCompute() throws Throwable;
1423
1424	<	public final T compute() {
1424	>	@Override protected final T compute() {
1425		try {
1426		return realCompute();
1427	<	} catch (Throwable t) {
1428	<	threadUnexpectedException(t);
1427	>	} catch (Throwable fail) {
1428	>	threadUnexpectedException(fail);
1429		return null;
1430		}
1431		}
#	Line 956 | Line 1440 | public class JSR166TestCase extends Test
1440		}
1441
1442		/**
1443	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1444	<	* of throwing checked exceptions.
1443	>	* A CyclicBarrier that uses timed await and fails with
1444	>	* AssertionFailedErrors instead of throwing checked exceptions.
1445		*/
1446		public class CheckedBarrier extends CyclicBarrier {
1447		public CheckedBarrier(int parties) { super(parties); }
1448
1449		public int await() {
1450		try {
1451	<	return super.await();
1452	<	} catch (Exception e) {
1451	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1452	>	} catch (TimeoutException timedOut) {
1453	>	throw new AssertionFailedError("timed out");
1454	>	} catch (Exception fail) {
1455		AssertionFailedError afe =
1456	<	new AssertionFailedError("Unexpected exception: " + e);
1457	<	afe.initCause(e);
1456	>	new AssertionFailedError("Unexpected exception: " + fail);
1457	>	afe.initCause(fail);
1458		throw afe;
1459		}
1460		}
1461		}
1462
1463	+	void checkEmpty(BlockingQueue q) {
1464	+	try {
1465	+	assertTrue(q.isEmpty());
1466	+	assertEquals(0, q.size());
1467	+	assertNull(q.peek());
1468	+	assertNull(q.poll());
1469	+	assertNull(q.poll(0, MILLISECONDS));
1470	+	assertEquals(q.toString(), "[]");
1471	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1472	+	assertFalse(q.iterator().hasNext());
1473	+	try {
1474	+	q.element();
1475	+	shouldThrow();
1476	+	} catch (NoSuchElementException success) {}
1477	+	try {
1478	+	q.iterator().next();
1479	+	shouldThrow();
1480	+	} catch (NoSuchElementException success) {}
1481	+	try {
1482	+	q.remove();
1483	+	shouldThrow();
1484	+	} catch (NoSuchElementException success) {}
1485	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1486	+	}
1487	+
1488	+	void assertSerialEquals(Object x, Object y) {
1489	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1490	+	}
1491	+
1492	+	void assertNotSerialEquals(Object x, Object y) {
1493	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1494	+	}
1495	+
1496	+	byte[] serialBytes(Object o) {
1497	+	try {
1498	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1499	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1500	+	oos.writeObject(o);
1501	+	oos.flush();
1502	+	oos.close();
1503	+	return bos.toByteArray();
1504	+	} catch (Throwable fail) {
1505	+	threadUnexpectedException(fail);
1506	+	return new byte[0];
1507	+	}
1508	+	}
1509	+
1510	+	@SuppressWarnings("unchecked")
1511	+	<T> T serialClone(T o) {
1512	+	try {
1513	+	ObjectInputStream ois = new ObjectInputStream
1514	+	(new ByteArrayInputStream(serialBytes(o)));
1515	+	T clone = (T) ois.readObject();
1516	+	assertSame(o.getClass(), clone.getClass());
1517	+	return clone;
1518	+	} catch (Throwable fail) {
1519	+	threadUnexpectedException(fail);
1520	+	return null;
1521	+	}
1522	+	}
1523	+
1524	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1525	+	Runnable... throwingActions) {
1526	+	for (Runnable throwingAction : throwingActions) {
1527	+	boolean threw = false;
1528	+	try { throwingAction.run(); }
1529	+	catch (Throwable t) {
1530	+	threw = true;
1531	+	if (!expectedExceptionClass.isInstance(t)) {
1532	+	AssertionFailedError afe =
1533	+	new AssertionFailedError
1534	+	("Expected " + expectedExceptionClass.getName() +
1535	+	", got " + t.getClass().getName());
1536	+	afe.initCause(t);
1537	+	threadUnexpectedException(afe);
1538	+	}
1539	+	}
1540	+	if (!threw)
1541	+	shouldThrow(expectedExceptionClass.getName());
1542	+	}
1543	+	}
1544	+
1545	+	public void assertIteratorExhausted(Iterator<?> it) {
1546	+	try {
1547	+	it.next();
1548	+	shouldThrow();
1549	+	} catch (NoSuchElementException success) {}
1550	+	assertFalse(it.hasNext());
1551	+	}
1552		}

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