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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.65 by jsr166, Thu Oct 21 23:22:49 2010 UTC vs.
Revision 1.136 by jsr166, Fri Sep 4 18:16:28 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() {
285	+	// As of 2015-09, java9 still uses 52.0 class file version
286	+	return JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
287	+	}
288	+	// public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
289	+	public static boolean atLeastJava10() {
290	+	return JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
291	+	}
292	+
293		/**
294		* Collects all JSR166 unit tests as one suite.
295		*/
296		public static Test suite() {
297	<	return newTestSuite(
297	>	// Java7+ test classes
298	>	TestSuite suite = newTestSuite(
299		ForkJoinPoolTest.suite(),
300		ForkJoinTaskTest.suite(),
301		RecursiveActionTest.suite(),
#	Line 234 | Line 360 | public class JSR166TestCase extends Test
360		TreeSetTest.suite(),
361		TreeSubMapTest.suite(),
362		TreeSubSetTest.suite());
363	+
364	+	// Java8+ test classes
365	+	if (atLeastJava8()) {
366	+	String[] java8TestClassNames = {
367	+	"Atomic8Test",
368	+	"CompletableFutureTest",
369	+	"ConcurrentHashMap8Test",
370	+	"CountedCompleterTest",
371	+	"DoubleAccumulatorTest",
372	+	"DoubleAdderTest",
373	+	"ForkJoinPool8Test",
374	+	"ForkJoinTask8Test",
375	+	"LongAccumulatorTest",
376	+	"LongAdderTest",
377	+	"SplittableRandomTest",
378	+	"StampedLockTest",
379	+	"ThreadLocalRandom8Test",
380	+	};
381	+	addNamedTestClasses(suite, java8TestClassNames);
382	+	}
383	+
384	+	// Java9+ test classes
385	+	if (atLeastJava9()) {
386	+	String[] java9TestClassNames = {
387	+	"ThreadPoolExecutor9Test",
388	+	};
389	+	addNamedTestClasses(suite, java9TestClassNames);
390	+	}
391	+
392	+	return suite;
393	+	}
394	+
395	+	/** Returns list of junit-style test method names in given class. */
396	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
397	+	Method[] methods = testClass.getDeclaredMethods();
398	+	ArrayList<String> names = new ArrayList<String>(methods.length);
399	+	for (Method method : methods) {
400	+	if (method.getName().startsWith("test")
401	+	&& Modifier.isPublic(method.getModifiers())
402	+	// method.getParameterCount() requires jdk8+
403	+	&& method.getParameterTypes().length == 0) {
404	+	names.add(method.getName());
405	+	}
406	+	}
407	+	return names;
408	+	}
409	+
410	+	/**
411	+	* Returns junit-style testSuite for the given test class, but
412	+	* parameterized by passing extra data to each test.
413	+	*/
414	+	public static <ExtraData> Test parameterizedTestSuite
415	+	(Class<? extends JSR166TestCase> testClass,
416	+	Class<ExtraData> dataClass,
417	+	ExtraData data) {
418	+	try {
419	+	TestSuite suite = new TestSuite();
420	+	Constructor c =
421	+	testClass.getDeclaredConstructor(dataClass, String.class);
422	+	for (String methodName : testMethodNames(testClass))
423	+	suite.addTest((Test) c.newInstance(data, methodName));
424	+	return suite;
425	+	} catch (Exception e) {
426	+	throw new Error(e);
427	+	}
428	+	}
429	+
430	+	/**
431	+	* Returns junit-style testSuite for the jdk8 extension of the
432	+	* given test class, but parameterized by passing extra data to
433	+	* each test.  Uses reflection to allow compilation in jdk7.
434	+	*/
435	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
436	+	(Class<? extends JSR166TestCase> testClass,
437	+	Class<ExtraData> dataClass,
438	+	ExtraData data) {
439	+	if (atLeastJava8()) {
440	+	String name = testClass.getName();
441	+	String name8 = name.replaceAll("Test$", "8Test");
442	+	if (name.equals(name8)) throw new Error(name);
443	+	try {
444	+	return (Test)
445	+	Class.forName(name8)
446	+	.getMethod("testSuite", new Class[] { dataClass })
447	+	.invoke(null, data);
448	+	} catch (Exception e) {
449	+	throw new Error(e);
450	+	}
451	+	} else {
452	+	return new TestSuite();
453	+	}
454	+
455		}
456
457	+	// Delays for timing-dependent tests, in milliseconds.
458
459		public static long SHORT_DELAY_MS;
460		public static long SMALL_DELAY_MS;
461		public static long MEDIUM_DELAY_MS;
462		public static long LONG_DELAY_MS;
463
245	–
464		/**
465		* Returns the shortest timed delay. This could
466		* be reimplemented to use for example a Property.
#	Line 251 | Line 469 | public class JSR166TestCase extends Test
469		return 50;
470		}
471
254	–
472		/**
473		* Sets delays as multiples of SHORT_DELAY.
474		*/
#	Line 259 | Line 476 | public class JSR166TestCase extends Test
476		SHORT_DELAY_MS = getShortDelay();
477		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
478		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
479	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
479	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
480	>	}
481	>
482	>	/**
483	>	* Returns a timeout in milliseconds to be used in tests that
484	>	* verify that operations block or time out.
485	>	*/
486	>	long timeoutMillis() {
487	>	return SHORT_DELAY_MS / 4;
488	>	}
489	>
490	>	/**
491	>	* Returns a new Date instance representing a time at least
492	>	* delayMillis milliseconds in the future.
493	>	*/
494	>	Date delayedDate(long delayMillis) {
495	>	// Add 1 because currentTimeMillis is known to round into the past.
496	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
497		}
498
499		/**
#	Line 283 | Line 517 | public class JSR166TestCase extends Test
517		}
518
519		/**
520	+	* Extra checks that get done for all test cases.
521	+	*
522		* Triggers test case failure if any thread assertions have failed,
523		* by rethrowing, in the test harness thread, any exception recorded
524		* earlier by threadRecordFailure.
525	+	*
526	+	* Triggers test case failure if interrupt status is set in the main thread.
527		*/
528		public void tearDown() throws Exception {
529	<	Throwable t = threadFailure.get();
529	>	Throwable t = threadFailure.getAndSet(null);
530		if (t != null) {
531		if (t instanceof Error)
532		throw (Error) t;
#	Line 303 | Line 541 | public class JSR166TestCase extends Test
541		throw afe;
542		}
543		}
544	+
545	+	if (Thread.interrupted())
546	+	throw new AssertionFailedError("interrupt status set in main thread");
547	+
548	+	checkForkJoinPoolThreadLeaks();
549	+	}
550	+
551	+	/**
552	+	* Finds missing try { ... } finally { joinPool(e); }
553	+	*/
554	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
555	+	Thread[] survivors = new Thread[5];
556	+	int count = Thread.enumerate(survivors);
557	+	for (int i = 0; i < count; i++) {
558	+	Thread thread = survivors[i];
559	+	String name = thread.getName();
560	+	if (name.startsWith("ForkJoinPool-")) {
561	+	// give thread some time to terminate
562	+	thread.join(LONG_DELAY_MS);
563	+	if (!thread.isAlive()) continue;
564	+	throw new AssertionFailedError
565	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
566	+	toString(), name));
567	+	}
568	+	}
569		}
570
571		/**
#	Line 383 | Line 646 | public class JSR166TestCase extends Test
646		public void threadAssertEquals(Object x, Object y) {
647		try {
648		assertEquals(x, y);
649	<	} catch (AssertionFailedError t) {
650	<	threadRecordFailure(t);
651	<	throw t;
652	<	} catch (Throwable t) {
653	<	threadUnexpectedException(t);
649	>	} catch (AssertionFailedError fail) {
650	>	threadRecordFailure(fail);
651	>	throw fail;
652	>	} catch (Throwable fail) {
653	>	threadUnexpectedException(fail);
654		}
655		}
656
#	Line 399 | Line 662 | public class JSR166TestCase extends Test
662		public void threadAssertSame(Object x, Object y) {
663		try {
664		assertSame(x, y);
665	<	} catch (AssertionFailedError t) {
666	<	threadRecordFailure(t);
667	<	throw t;
665	>	} catch (AssertionFailedError fail) {
666	>	threadRecordFailure(fail);
667	>	throw fail;
668		}
669		}
670
#	Line 434 | Line 697 | public class JSR166TestCase extends Test
697		else {
698		AssertionFailedError afe =
699		new AssertionFailedError("unexpected exception: " + t);
700	<	t.initCause(t);
700	>	afe.initCause(t);
701		throw afe;
702		}
703		}
704
705		/**
706	+	* Delays, via Thread.sleep, for the given millisecond delay, but
707	+	* if the sleep is shorter than specified, may re-sleep or yield
708	+	* until time elapses.
709	+	*/
710	+	static void delay(long millis) throws InterruptedException {
711	+	long startTime = System.nanoTime();
712	+	long ns = millis * 1000 * 1000;
713	+	for (;;) {
714	+	if (millis > 0L)
715	+	Thread.sleep(millis);
716	+	else // too short to sleep
717	+	Thread.yield();
718	+	long d = ns - (System.nanoTime() - startTime);
719	+	if (d > 0L)
720	+	millis = d / (1000 * 1000);
721	+	else
722	+	break;
723	+	}
724	+	}
725	+
726	+	/**
727		* Waits out termination of a thread pool or fails doing so.
728		*/
729	<	public void joinPool(ExecutorService exec) {
729	>	void joinPool(ExecutorService exec) {
730		try {
731		exec.shutdown();
732	<	assertTrue("ExecutorService did not terminate in a timely manner",
733	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
732	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
733	>	fail("ExecutorService " + exec +
734	>	" did not terminate in a timely manner");
735		} catch (SecurityException ok) {
736		// Allowed in case test doesn't have privs
737	<	} catch (InterruptedException ie) {
737	>	} catch (InterruptedException fail) {
738		fail("Unexpected InterruptedException");
739		}
740		}
741
742	+	/**
743	+	* A debugging tool to print all stack traces, as jstack does.
744	+	*/
745	+	static void printAllStackTraces() {
746	+	for (ThreadInfo info :
747	+	ManagementFactory.getThreadMXBean()
748	+	.dumpAllThreads(true, true))
749	+	System.err.print(info);
750	+	}
751	+
752	+	/**
753	+	* Checks that thread does not terminate within the default
754	+	* millisecond delay of {@code timeoutMillis()}.
755	+	*/
756	+	void assertThreadStaysAlive(Thread thread) {
757	+	assertThreadStaysAlive(thread, timeoutMillis());
758	+	}
759	+
760	+	/**
761	+	* Checks that thread does not terminate within the given millisecond delay.
762	+	*/
763	+	void assertThreadStaysAlive(Thread thread, long millis) {
764	+	try {
765	+	// No need to optimize the failing case via Thread.join.
766	+	delay(millis);
767	+	assertTrue(thread.isAlive());
768	+	} catch (InterruptedException fail) {
769	+	fail("Unexpected InterruptedException");
770	+	}
771	+	}
772	+
773	+	/**
774	+	* Checks that the threads do not terminate within the default
775	+	* millisecond delay of {@code timeoutMillis()}.
776	+	*/
777	+	void assertThreadsStayAlive(Thread... threads) {
778	+	assertThreadsStayAlive(timeoutMillis(), threads);
779	+	}
780	+
781	+	/**
782	+	* Checks that the threads do not terminate within the given millisecond delay.
783	+	*/
784	+	void assertThreadsStayAlive(long millis, Thread... threads) {
785	+	try {
786	+	// No need to optimize the failing case via Thread.join.
787	+	delay(millis);
788	+	for (Thread thread : threads)
789	+	assertTrue(thread.isAlive());
790	+	} catch (InterruptedException fail) {
791	+	fail("Unexpected InterruptedException");
792	+	}
793	+	}
794	+
795	+	/**
796	+	* Checks that future.get times out, with the default timeout of
797	+	* {@code timeoutMillis()}.
798	+	*/
799	+	void assertFutureTimesOut(Future future) {
800	+	assertFutureTimesOut(future, timeoutMillis());
801	+	}
802	+
803	+	/**
804	+	* Checks that future.get times out, with the given millisecond timeout.
805	+	*/
806	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
807	+	long startTime = System.nanoTime();
808	+	try {
809	+	future.get(timeoutMillis, MILLISECONDS);
810	+	shouldThrow();
811	+	} catch (TimeoutException success) {
812	+	} catch (Exception fail) {
813	+	threadUnexpectedException(fail);
814	+	} finally { future.cancel(true); }
815	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
816	+	}
817
818		/**
819		* Fails with message "should throw exception".
#	Line 494 | Line 854 | public class JSR166TestCase extends Test
854		public static final Integer m6  = new Integer(-6);
855		public static final Integer m10 = new Integer(-10);
856
497	–
857		/**
858		* Runs Runnable r with a security policy that permits precisely
859		* the specified permissions.  If there is no current security
#	Line 506 | Line 865 | public class JSR166TestCase extends Test
865		SecurityManager sm = System.getSecurityManager();
866		if (sm == null) {
867		r.run();
868	+	}
869	+	runWithSecurityManagerWithPermissions(r, permissions);
870	+	}
871	+
872	+	/**
873	+	* Runs Runnable r with a security policy that permits precisely
874	+	* the specified permissions.  If there is no current security
875	+	* manager, a temporary one is set for the duration of the
876	+	* Runnable.  We require that any security manager permit
877	+	* getPolicy/setPolicy.
878	+	*/
879	+	public void runWithSecurityManagerWithPermissions(Runnable r,
880	+	Permission... permissions) {
881	+	SecurityManager sm = System.getSecurityManager();
882	+	if (sm == null) {
883		Policy savedPolicy = Policy.getPolicy();
884		try {
885		Policy.setPolicy(permissivePolicy());
886		System.setSecurityManager(new SecurityManager());
887	<	runWithPermissions(r, permissions);
887	>	runWithSecurityManagerWithPermissions(r, permissions);
888		} finally {
889		System.setSecurityManager(null);
890		Policy.setPolicy(savedPolicy);
#	Line 558 | Line 932 | public class JSR166TestCase extends Test
932		return perms.implies(p);
933		}
934		public void refresh() {}
935	+	public String toString() {
936	+	List<Permission> ps = new ArrayList<Permission>();
937	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
938	+	ps.add(e.nextElement());
939	+	return "AdjustablePolicy with permissions " + ps;
940	+	}
941		}
942
943		/**
#	Line 585 | Line 965 | public class JSR166TestCase extends Test
965		*/
966		void sleep(long millis) {
967		try {
968	<	Thread.sleep(millis);
969	<	} catch (InterruptedException ie) {
968	>	delay(millis);
969	>	} catch (InterruptedException fail) {
970		AssertionFailedError afe =
971		new AssertionFailedError("Unexpected InterruptedException");
972	<	afe.initCause(ie);
972	>	afe.initCause(fail);
973		throw afe;
974		}
975		}
976
977		/**
978	<	* Sleeps until the timeout has elapsed, or interrupted.
599	<	* Does <em>NOT</em> throw InterruptedException.
600	<	*/
601	<	void sleepTillInterrupted(long timeoutMillis) {
602	<	try {
603	<	Thread.sleep(timeoutMillis);
604	<	} catch (InterruptedException wakeup) {}
605	<	}
606	<
607	<	/**
608	<	* Waits up to the specified number of milliseconds for the given
978	>	* Spin-waits up to the specified number of milliseconds for the given
979		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
980		*/
981		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
982	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
613	<	long t0 = System.nanoTime();
982	>	long startTime = System.nanoTime();
983		for (;;) {
984		Thread.State s = thread.getState();
985		if (s == Thread.State.BLOCKED ||
986		s == Thread.State.WAITING ||
987	<	s == Thread.State.TIMED_WAITING ||
988	<	System.nanoTime() - t0 > timeoutNanos)
987	>	s == Thread.State.TIMED_WAITING)
988	>	return;
989	>	else if (s == Thread.State.TERMINATED)
990	>	fail("Unexpected thread termination");
991	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
992	>	threadAssertTrue(thread.isAlive());
993		return;
994	+	}
995		Thread.yield();
996		}
997		}
998
999		/**
1000	+	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1001	+	* state: BLOCKED, WAITING, or TIMED_WAITING.
1002	+	*/
1003	+	void waitForThreadToEnterWaitState(Thread thread) {
1004	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1005	+	}
1006	+
1007	+	/**
1008	+	* Returns the number of milliseconds since time given by
1009	+	* startNanoTime, which must have been previously returned from a
1010	+	* call to {@link System#nanoTime()}.
1011	+	*/
1012	+	static long millisElapsedSince(long startNanoTime) {
1013	+	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1014	+	}
1015	+
1016	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1017	+	//         long startTime = System.nanoTime();
1018	+	//         try {
1019	+	//             r.run();
1020	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1021	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1022	+	//             throw new AssertionFailedError("did not return promptly");
1023	+	//     }
1024	+
1025	+	//     void assertTerminatesPromptly(Runnable r) {
1026	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1027	+	//     }
1028	+
1029	+	/**
1030	+	* Checks that timed f.get() returns the expected value, and does not
1031	+	* wait for the timeout to elapse before returning.
1032	+	*/
1033	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1034	+	long startTime = System.nanoTime();
1035	+	try {
1036	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1037	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1038	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1039	+	throw new AssertionFailedError("timed get did not return promptly");
1040	+	}
1041	+
1042	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1043	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1044	+	}
1045	+
1046	+	/**
1047		* Returns a new started daemon Thread running the given runnable.
1048		*/
1049		Thread newStartedThread(Runnable runnable) {
#	Line 640 | Line 1061 | public class JSR166TestCase extends Test
1061		void awaitTermination(Thread t, long timeoutMillis) {
1062		try {
1063		t.join(timeoutMillis);
1064	<	} catch (InterruptedException ie) {
1065	<	threadUnexpectedException(ie);
1064	>	} catch (InterruptedException fail) {
1065	>	threadUnexpectedException(fail);
1066		} finally {
1067	<	if (t.isAlive()) {
1067	>	if (t.getState() != Thread.State.TERMINATED) {
1068		t.interrupt();
1069		fail("Test timed out");
1070		}
1071		}
1072		}
1073
1074	+	/**
1075	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1076	+	* terminate (using {@link Thread#join(long)}), else interrupts
1077	+	* the thread (in the hope that it may terminate later) and fails.
1078	+	*/
1079	+	void awaitTermination(Thread t) {
1080	+	awaitTermination(t, LONG_DELAY_MS);
1081	+	}
1082	+
1083		// Some convenient Runnable classes
1084
1085		public abstract class CheckedRunnable implements Runnable {
#	Line 658 | Line 1088 | public class JSR166TestCase extends Test
1088		public final void run() {
1089		try {
1090		realRun();
1091	<	} catch (Throwable t) {
1092	<	threadUnexpectedException(t);
1091	>	} catch (Throwable fail) {
1092	>	threadUnexpectedException(fail);
1093		}
1094		}
1095		}
#	Line 712 | Line 1142 | public class JSR166TestCase extends Test
1142		realRun();
1143		threadShouldThrow("InterruptedException");
1144		} catch (InterruptedException success) {
1145	<	} catch (Throwable t) {
1146	<	threadUnexpectedException(t);
1145	>	threadAssertFalse(Thread.interrupted());
1146	>	} catch (Throwable fail) {
1147	>	threadUnexpectedException(fail);
1148		}
1149		}
1150		}
#	Line 724 | Line 1155 | public class JSR166TestCase extends Test
1155		public final T call() {
1156		try {
1157		return realCall();
1158	<	} catch (Throwable t) {
1159	<	threadUnexpectedException(t);
1158	>	} catch (Throwable fail) {
1159	>	threadUnexpectedException(fail);
1160		return null;
1161		}
1162		}
#	Line 741 | Line 1172 | public class JSR166TestCase extends Test
1172		threadShouldThrow("InterruptedException");
1173		return result;
1174		} catch (InterruptedException success) {
1175	<	} catch (Throwable t) {
1176	<	threadUnexpectedException(t);
1175	>	threadAssertFalse(Thread.interrupted());
1176	>	} catch (Throwable fail) {
1177	>	threadUnexpectedException(fail);
1178		}
1179		return null;
1180		}
#	Line 772 | Line 1204 | public class JSR166TestCase extends Test
1204		}};
1205		}
1206
1207	+	public Runnable awaiter(final CountDownLatch latch) {
1208	+	return new CheckedRunnable() {
1209	+	public void realRun() throws InterruptedException {
1210	+	await(latch);
1211	+	}};
1212	+	}
1213	+
1214	+	public void await(CountDownLatch latch) {
1215	+	try {
1216	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1217	+	} catch (Throwable fail) {
1218	+	threadUnexpectedException(fail);
1219	+	}
1220	+	}
1221	+
1222	+	public void await(Semaphore semaphore) {
1223	+	try {
1224	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1225	+	} catch (Throwable fail) {
1226	+	threadUnexpectedException(fail);
1227	+	}
1228	+	}
1229	+
1230	+	//     /**
1231	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1232	+	//      */
1233	+	//     public void await(AtomicBoolean flag) {
1234	+	//         await(flag, LONG_DELAY_MS);
1235	+	//     }
1236	+
1237	+	//     /**
1238	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1239	+	//      */
1240	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1241	+	//         long startTime = System.nanoTime();
1242	+	//         while (!flag.get()) {
1243	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1244	+	//                 throw new AssertionFailedError("timed out");
1245	+	//             Thread.yield();
1246	+	//         }
1247	+	//     }
1248	+
1249		public static class NPETask implements Callable<String> {
1250		public String call() { throw new NullPointerException(); }
1251		}
#	Line 782 | Line 1256 | public class JSR166TestCase extends Test
1256
1257		public class ShortRunnable extends CheckedRunnable {
1258		protected void realRun() throws Throwable {
1259	<	Thread.sleep(SHORT_DELAY_MS);
1259	>	delay(SHORT_DELAY_MS);
1260		}
1261		}
1262
1263		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1264		protected void realRun() throws InterruptedException {
1265	<	Thread.sleep(SHORT_DELAY_MS);
1265	>	delay(SHORT_DELAY_MS);
1266		}
1267		}
1268
1269		public class SmallRunnable extends CheckedRunnable {
1270		protected void realRun() throws Throwable {
1271	<	Thread.sleep(SMALL_DELAY_MS);
1271	>	delay(SMALL_DELAY_MS);
1272		}
1273		}
1274
1275		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1276		protected void realRun() {
1277		try {
1278	<	Thread.sleep(SMALL_DELAY_MS);
1278	>	delay(SMALL_DELAY_MS);
1279		} catch (InterruptedException ok) {}
1280		}
1281		}
1282
1283		public class SmallCallable extends CheckedCallable {
1284		protected Object realCall() throws InterruptedException {
1285	<	Thread.sleep(SMALL_DELAY_MS);
1285	>	delay(SMALL_DELAY_MS);
1286		return Boolean.TRUE;
1287		}
1288		}
1289
1290		public class MediumRunnable extends CheckedRunnable {
1291		protected void realRun() throws Throwable {
1292	<	Thread.sleep(MEDIUM_DELAY_MS);
1292	>	delay(MEDIUM_DELAY_MS);
1293		}
1294		}
1295
1296		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1297		protected void realRun() throws InterruptedException {
1298	<	Thread.sleep(MEDIUM_DELAY_MS);
1298	>	delay(MEDIUM_DELAY_MS);
1299		}
1300		}
1301
#	Line 829 | Line 1303 | public class JSR166TestCase extends Test
1303		return new CheckedRunnable() {
1304		protected void realRun() {
1305		try {
1306	<	Thread.sleep(timeoutMillis);
1306	>	delay(timeoutMillis);
1307		} catch (InterruptedException ok) {}
1308		}};
1309		}
#	Line 837 | Line 1311 | public class JSR166TestCase extends Test
1311		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1312		protected void realRun() {
1313		try {
1314	<	Thread.sleep(MEDIUM_DELAY_MS);
1314	>	delay(MEDIUM_DELAY_MS);
1315		} catch (InterruptedException ok) {}
1316		}
1317		}
#	Line 845 | Line 1319 | public class JSR166TestCase extends Test
1319		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1320		protected void realRun() {
1321		try {
1322	<	Thread.sleep(LONG_DELAY_MS);
1322	>	delay(LONG_DELAY_MS);
1323		} catch (InterruptedException ok) {}
1324		}
1325		}
#	Line 869 | Line 1343 | public class JSR166TestCase extends Test
1343		public boolean isDone() { return done; }
1344		public void run() {
1345		try {
1346	<	Thread.sleep(timeoutMillis);
1346	>	delay(timeoutMillis);
1347		done = true;
1348		} catch (InterruptedException ok) {}
1349		}
#	Line 880 | Line 1354 | public class JSR166TestCase extends Test
1354		public volatile boolean done = false;
1355		public void run() {
1356		try {
1357	<	Thread.sleep(SHORT_DELAY_MS);
1357	>	delay(SHORT_DELAY_MS);
1358		done = true;
1359		} catch (InterruptedException ok) {}
1360		}
#	Line 890 | Line 1364 | public class JSR166TestCase extends Test
1364		public volatile boolean done = false;
1365		public void run() {
1366		try {
1367	<	Thread.sleep(SMALL_DELAY_MS);
1367	>	delay(SMALL_DELAY_MS);
1368		done = true;
1369		} catch (InterruptedException ok) {}
1370		}
#	Line 900 | Line 1374 | public class JSR166TestCase extends Test
1374		public volatile boolean done = false;
1375		public void run() {
1376		try {
1377	<	Thread.sleep(MEDIUM_DELAY_MS);
1377	>	delay(MEDIUM_DELAY_MS);
1378		done = true;
1379		} catch (InterruptedException ok) {}
1380		}
#	Line 910 | Line 1384 | public class JSR166TestCase extends Test
1384		public volatile boolean done = false;
1385		public void run() {
1386		try {
1387	<	Thread.sleep(LONG_DELAY_MS);
1387	>	delay(LONG_DELAY_MS);
1388		done = true;
1389		} catch (InterruptedException ok) {}
1390		}
#	Line 927 | Line 1401 | public class JSR166TestCase extends Test
1401		public volatile boolean done = false;
1402		public Object call() {
1403		try {
1404	<	Thread.sleep(SMALL_DELAY_MS);
1404	>	delay(SMALL_DELAY_MS);
1405		done = true;
1406		} catch (InterruptedException ok) {}
1407		return Boolean.TRUE;
#	Line 940 | Line 1414 | public class JSR166TestCase extends Test
1414		public abstract class CheckedRecursiveAction extends RecursiveAction {
1415		protected abstract void realCompute() throws Throwable;
1416
1417	<	public final void compute() {
1417	>	@Override protected final void compute() {
1418		try {
1419		realCompute();
1420	<	} catch (Throwable t) {
1421	<	threadUnexpectedException(t);
1420	>	} catch (Throwable fail) {
1421	>	threadUnexpectedException(fail);
1422		}
1423		}
1424		}
#	Line 955 | Line 1429 | public class JSR166TestCase extends Test
1429		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1430		protected abstract T realCompute() throws Throwable;
1431
1432	<	public final T compute() {
1432	>	@Override protected final T compute() {
1433		try {
1434		return realCompute();
1435	<	} catch (Throwable t) {
1436	<	threadUnexpectedException(t);
1435	>	} catch (Throwable fail) {
1436	>	threadUnexpectedException(fail);
1437		return null;
1438		}
1439		}
#	Line 974 | Line 1448 | public class JSR166TestCase extends Test
1448		}
1449
1450		/**
1451	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1452	<	* of throwing checked exceptions.
1451	>	* A CyclicBarrier that uses timed await and fails with
1452	>	* AssertionFailedErrors instead of throwing checked exceptions.
1453		*/
1454		public class CheckedBarrier extends CyclicBarrier {
1455		public CheckedBarrier(int parties) { super(parties); }
1456
1457		public int await() {
1458		try {
1459	<	return super.await();
1460	<	} catch (Exception e) {
1459	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1460	>	} catch (TimeoutException timedOut) {
1461	>	throw new AssertionFailedError("timed out");
1462	>	} catch (Exception fail) {
1463		AssertionFailedError afe =
1464	<	new AssertionFailedError("Unexpected exception: " + e);
1465	<	afe.initCause(e);
1464	>	new AssertionFailedError("Unexpected exception: " + fail);
1465	>	afe.initCause(fail);
1466		throw afe;
1467		}
1468		}
1469		}
1470
1471	+	void checkEmpty(BlockingQueue q) {
1472	+	try {
1473	+	assertTrue(q.isEmpty());
1474	+	assertEquals(0, q.size());
1475	+	assertNull(q.peek());
1476	+	assertNull(q.poll());
1477	+	assertNull(q.poll(0, MILLISECONDS));
1478	+	assertEquals(q.toString(), "[]");
1479	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1480	+	assertFalse(q.iterator().hasNext());
1481	+	try {
1482	+	q.element();
1483	+	shouldThrow();
1484	+	} catch (NoSuchElementException success) {}
1485	+	try {
1486	+	q.iterator().next();
1487	+	shouldThrow();
1488	+	} catch (NoSuchElementException success) {}
1489	+	try {
1490	+	q.remove();
1491	+	shouldThrow();
1492	+	} catch (NoSuchElementException success) {}
1493	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1494	+	}
1495	+
1496	+	void assertSerialEquals(Object x, Object y) {
1497	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1498	+	}
1499	+
1500	+	void assertNotSerialEquals(Object x, Object y) {
1501	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1502	+	}
1503	+
1504	+	byte[] serialBytes(Object o) {
1505	+	try {
1506	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1507	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1508	+	oos.writeObject(o);
1509	+	oos.flush();
1510	+	oos.close();
1511	+	return bos.toByteArray();
1512	+	} catch (Throwable fail) {
1513	+	threadUnexpectedException(fail);
1514	+	return new byte[0];
1515	+	}
1516	+	}
1517	+
1518	+	@SuppressWarnings("unchecked")
1519	+	<T> T serialClone(T o) {
1520	+	try {
1521	+	ObjectInputStream ois = new ObjectInputStream
1522	+	(new ByteArrayInputStream(serialBytes(o)));
1523	+	T clone = (T) ois.readObject();
1524	+	assertSame(o.getClass(), clone.getClass());
1525	+	return clone;
1526	+	} catch (Throwable fail) {
1527	+	threadUnexpectedException(fail);
1528	+	return null;
1529	+	}
1530	+	}
1531	+
1532	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1533	+	Runnable... throwingActions) {
1534	+	for (Runnable throwingAction : throwingActions) {
1535	+	boolean threw = false;
1536	+	try { throwingAction.run(); }
1537	+	catch (Throwable t) {
1538	+	threw = true;
1539	+	if (!expectedExceptionClass.isInstance(t)) {
1540	+	AssertionFailedError afe =
1541	+	new AssertionFailedError
1542	+	("Expected " + expectedExceptionClass.getName() +
1543	+	", got " + t.getClass().getName());
1544	+	afe.initCause(t);
1545	+	threadUnexpectedException(afe);
1546	+	}
1547	+	}
1548	+	if (!threw)
1549	+	shouldThrow(expectedExceptionClass.getName());
1550	+	}
1551	+	}
1552	+
1553	+	public void assertIteratorExhausted(Iterator<?> it) {
1554	+	try {
1555	+	it.next();
1556	+	shouldThrow();
1557	+	} catch (NoSuchElementException success) {}
1558	+	assertFalse(it.hasNext());
1559	+	}
1560		}

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