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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.202 by jsr166, Thu Sep 15 00:32:45 2016 UTC vs.
Revision 1.249 by jsr166, Sat Nov 24 21:41:20 2018 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
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
#	Line 8 | Line 9
9
10		/*
11		* @test
12	<	* @summary JSR-166 tck tests
13	<	* @modules java.management
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15		* @build *
16	<	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
17	<	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
18	<	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41		*/
42
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
#	Line 30 | Line 54 | import java.lang.management.ThreadMXBean
54		import java.lang.reflect.Constructor;
55		import java.lang.reflect.Method;
56		import java.lang.reflect.Modifier;
33	–	import java.nio.file.Files;
34	–	import java.nio.file.Paths;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 41 | Line 63 | import java.security.ProtectionDomain;
63		import java.security.SecurityPermission;
64		import java.util.ArrayList;
65		import java.util.Arrays;
66	+	import java.util.Collection;
67		import java.util.Collections;
68		import java.util.Date;
69	+	import java.util.Deque;
70		import java.util.Enumeration;
71	+	import java.util.HashSet;
72		import java.util.Iterator;
73		import java.util.List;
74		import java.util.NoSuchElementException;
75		import java.util.PropertyPermission;
76	+	import java.util.Set;
77		import java.util.concurrent.BlockingQueue;
78		import java.util.concurrent.Callable;
79		import java.util.concurrent.CountDownLatch;
80		import java.util.concurrent.CyclicBarrier;
81		import java.util.concurrent.ExecutionException;
82	+	import java.util.concurrent.Executor;
83		import java.util.concurrent.Executors;
84		import java.util.concurrent.ExecutorService;
85		import java.util.concurrent.ForkJoinPool;
86		import java.util.concurrent.Future;
87	+	import java.util.concurrent.FutureTask;
88		import java.util.concurrent.RecursiveAction;
89		import java.util.concurrent.RecursiveTask;
90	+	import java.util.concurrent.RejectedExecutionException;
91		import java.util.concurrent.RejectedExecutionHandler;
92		import java.util.concurrent.Semaphore;
93	+	import java.util.concurrent.ScheduledExecutorService;
94	+	import java.util.concurrent.ScheduledFuture;
95		import java.util.concurrent.SynchronousQueue;
96		import java.util.concurrent.ThreadFactory;
97		import java.util.concurrent.ThreadLocalRandom;
98		import java.util.concurrent.ThreadPoolExecutor;
99	+	import java.util.concurrent.TimeUnit;
100		import java.util.concurrent.TimeoutException;
101		import java.util.concurrent.atomic.AtomicBoolean;
102		import java.util.concurrent.atomic.AtomicReference;
71	–	import java.util.regex.Matcher;
103		import java.util.regex.Pattern;
104
74	–	import junit.framework.AssertionFailedError;
105		import junit.framework.Test;
106		import junit.framework.TestCase;
107		import junit.framework.TestResult;
#	Line 87 | Line 117 | import junit.framework.TestSuite;
117		*
118		* <ol>
119		*
120	<	* <li>All assertions in code running in generated threads must use
121	<	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
122	<	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
123	<	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
124	<	* particularly recommended) for other code to use these forms too.
125	<	* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.
120	>	* <li>All code not running in the main test thread (manually spawned threads
121	>	* or the common fork join pool) must be checked for failure (and completion!).
122	>	* Mechanisms that can be used to ensure this are:
123	>	*   <ol>
124	>	*   <li>Signalling via a synchronizer like AtomicInteger or CountDownLatch
125	>	*    that the task completed normally, which is checked before returning from
126	>	*    the test method in the main thread.
127	>	*   <li>Using the forms {@link #threadFail}, {@link #threadAssertTrue},
128	>	*    or {@link #threadAssertNull}, (not {@code fail}, {@code assertTrue}, etc.)
129	>	*    Only the most typically used JUnit assertion methods are defined
130	>	*    this way, but enough to live with.
131	>	*   <li>Recording failure explicitly using {@link #threadUnexpectedException}
132	>	*    or {@link #threadRecordFailure}.
133	>	*   <li>Using a wrapper like CheckedRunnable that uses one the mechanisms above.
134	>	*   </ol>
135		*
136		* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
137		* to invoke {@code super.setUp} and {@code super.tearDown} within
#	Line 278 | Line 316 | public class JSR166TestCase extends Test
316
317		//     public static String cpuModel() {
318		//         try {
319	<	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
319	>	//             java.util.regex.Matcher matcher
320	>	//               = Pattern.compile("model name\\s*: (.*)")
321		//                 .matcher(new String(
322	<	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
322	>	//                     java.nio.file.Files.readAllBytes(
323	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
324		//             matcher.find();
325		//             return matcher.group(1);
326		//         } catch (Exception ex) { return null; }
#	Line 389 | Line 429 | public class JSR166TestCase extends Test
429		for (String testClassName : testClassNames) {
430		try {
431		Class<?> testClass = Class.forName(testClassName);
432	<	Method m = testClass.getDeclaredMethod("suite",
393	<	new Class<?>[0]);
432	>	Method m = testClass.getDeclaredMethod("suite");
433		suite.addTest(newTestSuite((Test)m.invoke(null)));
434	<	} catch (Exception e) {
435	<	throw new Error("Missing test class", e);
434	>	} catch (ReflectiveOperationException e) {
435	>	throw new AssertionError("Missing test class", e);
436		}
437		}
438		}
#	Line 415 | Line 454 | public class JSR166TestCase extends Test
454		}
455		}
456
457	<	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
458	<	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
459	<	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
460	<	public static boolean atLeastJava9() {
461	<	return JAVA_CLASS_VERSION >= 53.0
462	<	// As of 2015-09, java9 still uses 52.0 class file version
424	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
425	<	}
426	<	public static boolean atLeastJava10() {
427	<	return JAVA_CLASS_VERSION >= 54.0
428	<	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
429	<	}
457	>	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
458	>	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
459	>	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
460	>	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
461	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
462	>	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
463
464		/**
465		* Collects all JSR166 unit tests as one suite.
#	Line 447 | Line 480 | public class JSR166TestCase extends Test
480		AbstractQueuedLongSynchronizerTest.suite(),
481		ArrayBlockingQueueTest.suite(),
482		ArrayDequeTest.suite(),
483	+	ArrayListTest.suite(),
484		AtomicBooleanTest.suite(),
485		AtomicIntegerArrayTest.suite(),
486		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 469 | Line 503 | public class JSR166TestCase extends Test
503		CopyOnWriteArrayListTest.suite(),
504		CopyOnWriteArraySetTest.suite(),
505		CountDownLatchTest.suite(),
506	+	CountedCompleterTest.suite(),
507		CyclicBarrierTest.suite(),
508		DelayQueueTest.suite(),
509		EntryTest.suite(),
#	Line 497 | Line 532 | public class JSR166TestCase extends Test
532		TreeMapTest.suite(),
533		TreeSetTest.suite(),
534		TreeSubMapTest.suite(),
535	<	TreeSubSetTest.suite());
535	>	TreeSubSetTest.suite(),
536	>	VectorTest.suite());
537
538		// Java8+ test classes
539		if (atLeastJava8()) {
540		String[] java8TestClassNames = {
541	+	"ArrayDeque8Test",
542		"Atomic8Test",
543		"CompletableFutureTest",
544		"ConcurrentHashMap8Test",
545	<	"CountedCompleterTest",
545	>	"CountedCompleter8Test",
546		"DoubleAccumulatorTest",
547		"DoubleAdderTest",
548		"ForkJoinPool8Test",
549		"ForkJoinTask8Test",
550	+	"HashMapTest",
551	+	"LinkedBlockingDeque8Test",
552	+	"LinkedBlockingQueue8Test",
553		"LongAccumulatorTest",
554		"LongAdderTest",
555		"SplittableRandomTest",
#	Line 532 | Line 572 | public class JSR166TestCase extends Test
572		"AtomicReference9Test",
573		"AtomicReferenceArray9Test",
574		"ExecutorCompletionService9Test",
575	+	"ForkJoinPool9Test",
576		};
577		addNamedTestClasses(suite, java9TestClassNames);
578		}
#	Line 542 | Line 583 | public class JSR166TestCase extends Test
583		/** Returns list of junit-style test method names in given class. */
584		public static ArrayList<String> testMethodNames(Class<?> testClass) {
585		Method[] methods = testClass.getDeclaredMethods();
586	<	ArrayList<String> names = new ArrayList<String>(methods.length);
586	>	ArrayList<String> names = new ArrayList<>(methods.length);
587		for (Method method : methods) {
588		if (method.getName().startsWith("test")
589		&& Modifier.isPublic(method.getModifiers())
#	Line 569 | Line 610 | public class JSR166TestCase extends Test
610		for (String methodName : testMethodNames(testClass))
611		suite.addTest((Test) c.newInstance(data, methodName));
612		return suite;
613	<	} catch (Exception e) {
614	<	throw new Error(e);
613	>	} catch (ReflectiveOperationException e) {
614	>	throw new AssertionError(e);
615		}
616		}
617
#	Line 586 | Line 627 | public class JSR166TestCase extends Test
627		if (atLeastJava8()) {
628		String name = testClass.getName();
629		String name8 = name.replaceAll("Test$", "8Test");
630	<	if (name.equals(name8)) throw new Error(name);
630	>	if (name.equals(name8)) throw new AssertionError(name);
631		try {
632		return (Test)
633		Class.forName(name8)
634	<	.getMethod("testSuite", new Class[] { dataClass })
634	>	.getMethod("testSuite", dataClass)
635		.invoke(null, data);
636	<	} catch (Exception e) {
637	<	throw new Error(e);
636	>	} catch (ReflectiveOperationException e) {
637	>	throw new AssertionError(e);
638		}
639		} else {
640		return new TestSuite();
#	Line 607 | Line 648 | public class JSR166TestCase extends Test
648		public static long MEDIUM_DELAY_MS;
649		public static long LONG_DELAY_MS;
650
651	+	private static final long RANDOM_TIMEOUT;
652	+	private static final long RANDOM_EXPIRED_TIMEOUT;
653	+	private static final TimeUnit RANDOM_TIMEUNIT;
654	+	static {
655	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
656	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
657	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
658	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
659	+	TimeUnit[] timeUnits = TimeUnit.values();
660	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
661	+	}
662	+
663	+	/**
664	+	* Returns a timeout for use when any value at all will do.
665	+	*/
666	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
667	+
668	+	/**
669	+	* Returns a timeout that means "no waiting", i.e. not positive.
670	+	*/
671	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
672	+
673	+	/**
674	+	* Returns a random non-null TimeUnit.
675	+	*/
676	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
677	+
678		/**
679		* Returns the shortest timed delay. This can be scaled up for
680		* slow machines using the jsr166.delay.factor system property,
#	Line 627 | Line 695 | public class JSR166TestCase extends Test
695		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
696		}
697
698	+	private static final long TIMEOUT_DELAY_MS
699	+	= (long) (12.0 * Math.cbrt(delayFactor));
700	+
701		/**
702	<	* Returns a timeout in milliseconds to be used in tests that
703	<	* verify that operations block or time out.
702	>	* Returns a timeout in milliseconds to be used in tests that verify
703	>	* that operations block or time out.  We want this to be longer
704	>	* than the OS scheduling quantum, but not too long, so don't scale
705	>	* linearly with delayFactor; we use "crazy" cube root instead.
706		*/
707	<	long timeoutMillis() {
708	<	return SHORT_DELAY_MS / 4;
707	>	static long timeoutMillis() {
708	>	return TIMEOUT_DELAY_MS;
709		}
710
711		/**
#	Line 648 | Line 721 | public class JSR166TestCase extends Test
721		* The first exception encountered if any threadAssertXXX method fails.
722		*/
723		private final AtomicReference<Throwable> threadFailure
724	<	= new AtomicReference<Throwable>(null);
724	>	= new AtomicReference<>(null);
725
726		/**
727		* Records an exception so that it can be rethrown later in the test
#	Line 670 | Line 743 | public class JSR166TestCase extends Test
743		String msg = toString() + ": " + String.format(format, args);
744		System.err.println(msg);
745		dumpTestThreads();
746	<	throw new AssertionFailedError(msg);
746	>	throw new AssertionError(msg);
747		}
748
749		/**
#	Line 691 | Line 764 | public class JSR166TestCase extends Test
764		throw (RuntimeException) t;
765		else if (t instanceof Exception)
766		throw (Exception) t;
767	<	else {
768	<	AssertionFailedError afe =
696	<	new AssertionFailedError(t.toString());
697	<	afe.initCause(t);
698	<	throw afe;
699	<	}
767	>	else
768	>	throw new AssertionError(t.toString(), t);
769		}
770
771		if (Thread.interrupted())
#	Line 730 | Line 799 | public class JSR166TestCase extends Test
799
800		/**
801		* Just like fail(reason), but additionally recording (using
802	<	* threadRecordFailure) any AssertionFailedError thrown, so that
803	<	* the current testcase will fail.
802	>	* threadRecordFailure) any AssertionError thrown, so that the
803	>	* current testcase will fail.
804		*/
805		public void threadFail(String reason) {
806		try {
807		fail(reason);
808	<	} catch (AssertionFailedError t) {
809	<	threadRecordFailure(t);
810	<	throw t;
808	>	} catch (AssertionError fail) {
809	>	threadRecordFailure(fail);
810	>	throw fail;
811		}
812		}
813
814		/**
815		* Just like assertTrue(b), but additionally recording (using
816	<	* threadRecordFailure) any AssertionFailedError thrown, so that
817	<	* the current testcase will fail.
816	>	* threadRecordFailure) any AssertionError thrown, so that the
817	>	* current testcase will fail.
818		*/
819		public void threadAssertTrue(boolean b) {
820		try {
821		assertTrue(b);
822	<	} catch (AssertionFailedError t) {
823	<	threadRecordFailure(t);
824	<	throw t;
822	>	} catch (AssertionError fail) {
823	>	threadRecordFailure(fail);
824	>	throw fail;
825		}
826		}
827
828		/**
829		* Just like assertFalse(b), but additionally recording (using
830	<	* threadRecordFailure) any AssertionFailedError thrown, so that
831	<	* the current testcase will fail.
830	>	* threadRecordFailure) any AssertionError thrown, so that the
831	>	* current testcase will fail.
832		*/
833		public void threadAssertFalse(boolean b) {
834		try {
835		assertFalse(b);
836	<	} catch (AssertionFailedError t) {
837	<	threadRecordFailure(t);
838	<	throw t;
836	>	} catch (AssertionError fail) {
837	>	threadRecordFailure(fail);
838	>	throw fail;
839		}
840		}
841
842		/**
843		* Just like assertNull(x), but additionally recording (using
844	<	* threadRecordFailure) any AssertionFailedError thrown, so that
845	<	* the current testcase will fail.
844	>	* threadRecordFailure) any AssertionError thrown, so that the
845	>	* current testcase will fail.
846		*/
847		public void threadAssertNull(Object x) {
848		try {
849		assertNull(x);
850	<	} catch (AssertionFailedError t) {
851	<	threadRecordFailure(t);
852	<	throw t;
850	>	} catch (AssertionError fail) {
851	>	threadRecordFailure(fail);
852	>	throw fail;
853		}
854		}
855
856		/**
857		* Just like assertEquals(x, y), but additionally recording (using
858	<	* threadRecordFailure) any AssertionFailedError thrown, so that
859	<	* the current testcase will fail.
858	>	* threadRecordFailure) any AssertionError thrown, so that the
859	>	* current testcase will fail.
860		*/
861		public void threadAssertEquals(long x, long y) {
862		try {
863		assertEquals(x, y);
864	<	} catch (AssertionFailedError t) {
865	<	threadRecordFailure(t);
866	<	throw t;
864	>	} catch (AssertionError fail) {
865	>	threadRecordFailure(fail);
866	>	throw fail;
867		}
868		}
869
870		/**
871		* Just like assertEquals(x, y), but additionally recording (using
872	<	* threadRecordFailure) any AssertionFailedError thrown, so that
873	<	* the current testcase will fail.
872	>	* threadRecordFailure) any AssertionError thrown, so that the
873	>	* current testcase will fail.
874		*/
875		public void threadAssertEquals(Object x, Object y) {
876		try {
877		assertEquals(x, y);
878	<	} catch (AssertionFailedError fail) {
878	>	} catch (AssertionError fail) {
879		threadRecordFailure(fail);
880		throw fail;
881		} catch (Throwable fail) {
#	Line 816 | Line 885 | public class JSR166TestCase extends Test
885
886		/**
887		* Just like assertSame(x, y), but additionally recording (using
888	<	* threadRecordFailure) any AssertionFailedError thrown, so that
889	<	* the current testcase will fail.
888	>	* threadRecordFailure) any AssertionError thrown, so that the
889	>	* current testcase will fail.
890		*/
891		public void threadAssertSame(Object x, Object y) {
892		try {
893		assertSame(x, y);
894	<	} catch (AssertionFailedError fail) {
894	>	} catch (AssertionError fail) {
895		threadRecordFailure(fail);
896		throw fail;
897		}
#	Line 844 | Line 913 | public class JSR166TestCase extends Test
913
914		/**
915		* Records the given exception using {@link #threadRecordFailure},
916	<	* then rethrows the exception, wrapping it in an
917	<	* AssertionFailedError if necessary.
916	>	* then rethrows the exception, wrapping it in an AssertionError
917	>	* if necessary.
918		*/
919		public void threadUnexpectedException(Throwable t) {
920		threadRecordFailure(t);
#	Line 854 | Line 923 | public class JSR166TestCase extends Test
923		throw (RuntimeException) t;
924		else if (t instanceof Error)
925		throw (Error) t;
926	<	else {
927	<	AssertionFailedError afe =
859	<	new AssertionFailedError("unexpected exception: " + t);
860	<	afe.initCause(t);
861	<	throw afe;
862	<	}
926	>	else
927	>	throw new AssertionError("unexpected exception: " + t, t);
928		}
929
930		/**
#	Line 1005 | Line 1070 | public class JSR166TestCase extends Test
1070		ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1071		System.err.println("------ stacktrace dump start ------");
1072		for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1073	<	String name = info.getThreadName();
1073	>	final String name = info.getThreadName();
1074	>	String lockName;
1075		if ("Signal Dispatcher".equals(name))
1076		continue;
1077		if ("Reference Handler".equals(name)
1078	<	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
1078	>	&& (lockName = info.getLockName()) != null
1079	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1080		continue;
1081		if ("Finalizer".equals(name)
1082	<	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
1082	>	&& (lockName = info.getLockName()) != null
1083	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1084		continue;
1085		if ("checkForWedgedTest".equals(name))
1086		continue;
#	Line 1024 | Line 1092 | public class JSR166TestCase extends Test
1092		}
1093
1094		/**
1095	<	* Checks that thread does not terminate within the default
1028	<	* millisecond delay of {@code timeoutMillis()}.
1095	>	* Checks that thread eventually enters the expected blocked thread state.
1096		*/
1097	<	void assertThreadStaysAlive(Thread thread) {
1098	<	assertThreadStaysAlive(thread, timeoutMillis());
1099	<	}
1100	<
1101	<	/**
1102	<	* Checks that thread does not terminate within the given millisecond delay.
1103	<	*/
1104	<	void assertThreadStaysAlive(Thread thread, long millis) {
1105	<	try {
1106	<	// No need to optimize the failing case via Thread.join.
1107	<	delay(millis);
1108	<	assertTrue(thread.isAlive());
1109	<	} catch (InterruptedException fail) {
1043	<	threadFail("Unexpected InterruptedException");
1044	<	}
1045	<	}
1046	<
1047	<	/**
1048	<	* Checks that the threads do not terminate within the default
1049	<	* millisecond delay of {@code timeoutMillis()}.
1050	<	*/
1051	<	void assertThreadsStayAlive(Thread... threads) {
1052	<	assertThreadsStayAlive(timeoutMillis(), threads);
1053	<	}
1054	<
1055	<	/**
1056	<	* Checks that the threads do not terminate within the given millisecond delay.
1057	<	*/
1058	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1059	<	try {
1060	<	// No need to optimize the failing case via Thread.join.
1061	<	delay(millis);
1062	<	for (Thread thread : threads)
1063	<	assertTrue(thread.isAlive());
1064	<	} catch (InterruptedException fail) {
1065	<	threadFail("Unexpected InterruptedException");
1097	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1098	>	// always sleep at least 1 ms, with high probability avoiding
1099	>	// transitory states
1100	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1101	>	try { delay(1); }
1102	>	catch (InterruptedException fail) {
1103	>	throw new AssertionError("Unexpected InterruptedException", fail);
1104	>	}
1105	>	Thread.State s = thread.getState();
1106	>	if (s == expected)
1107	>	return;
1108	>	else if (s == Thread.State.TERMINATED)
1109	>	fail("Unexpected thread termination");
1110		}
1111	+	fail("timed out waiting for thread to enter thread state " + expected);
1112		}
1113
1114		/**
#	Line 1104 | Line 1149 | public class JSR166TestCase extends Test
1149		}
1150
1151		/**
1152	+	* The maximum number of consecutive spurious wakeups we should
1153	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1154	+	*/
1155	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1156	+
1157	+	/**
1158		* The number of elements to place in collections, arrays, etc.
1159		*/
1160		public static final int SIZE = 20;
#	Line 1207 | Line 1258 | public class JSR166TestCase extends Test
1258		}
1259		public void refresh() {}
1260		public String toString() {
1261	<	List<Permission> ps = new ArrayList<Permission>();
1261	>	List<Permission> ps = new ArrayList<>();
1262		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1263		ps.add(e.nextElement());
1264		return "AdjustablePolicy with permissions " + ps;
#	Line 1235 | Line 1286 | public class JSR166TestCase extends Test
1286
1287		/**
1288		* Sleeps until the given time has elapsed.
1289	<	* Throws AssertionFailedError if interrupted.
1289	>	* Throws AssertionError if interrupted.
1290		*/
1291		static void sleep(long millis) {
1292		try {
1293		delay(millis);
1294		} catch (InterruptedException fail) {
1295	<	AssertionFailedError afe =
1245	<	new AssertionFailedError("Unexpected InterruptedException");
1246	<	afe.initCause(fail);
1247	<	throw afe;
1295	>	throw new AssertionError("Unexpected InterruptedException", fail);
1296		}
1297		}
1298
1299		/**
1300		* Spin-waits up to the specified number of milliseconds for the given
1301		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1302	+	* @param waitingForGodot if non-null, an additional condition to satisfy
1303		*/
1304	<	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1305	<	long startTime = 0L;
1306	<	for (;;) {
1307	<	Thread.State s = thread.getState();
1308	<	if (s == Thread.State.BLOCKED ||
1309	<	s == Thread.State.WAITING ||
1310	<	s == Thread.State.TIMED_WAITING)
1311	<	return;
1312	<	else if (s == Thread.State.TERMINATED)
1304	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis,
1305	>	Callable<Boolean> waitingForGodot) {
1306	>	for (long startTime = 0L;;) {
1307	>	switch (thread.getState()) {
1308	>	case BLOCKED: case WAITING: case TIMED_WAITING:
1309	>	try {
1310	>	if (waitingForGodot == null || waitingForGodot.call())
1311	>	return;
1312	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1313	>	break;
1314	>	case TERMINATED:
1315		fail("Unexpected thread termination");
1316	<	else if (startTime == 0L)
1316	>	}
1317	>
1318	>	if (startTime == 0L)
1319		startTime = System.nanoTime();
1320		else if (millisElapsedSince(startTime) > timeoutMillis) {
1321	<	threadAssertTrue(thread.isAlive());
1322	<	return;
1321	>	assertTrue(thread.isAlive());
1322	>	if (waitingForGodot == null
1323	>	|| thread.getState() == Thread.State.RUNNABLE)
1324	>	fail("timed out waiting for thread to enter wait state");
1325	>	else
1326	>	fail("timed out waiting for condition, thread state="
1327	>	+ thread.getState());
1328		}
1329		Thread.yield();
1330		}
1331		}
1332
1333		/**
1334	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1335	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1334	>	* Spin-waits up to the specified number of milliseconds for the given
1335	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1336	>	*/
1337	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1338	>	waitForThreadToEnterWaitState(thread, timeoutMillis, null);
1339	>	}
1340	>
1341	>	/**
1342	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1343	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1344		*/
1345		void waitForThreadToEnterWaitState(Thread thread) {
1346	<	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1346	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, null);
1347	>	}
1348	>
1349	>	/**
1350	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1351	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1352	>	* and additionally satisfy the given condition.
1353	>	*/
1354	>	void waitForThreadToEnterWaitState(Thread thread,
1355	>	Callable<Boolean> waitingForGodot) {
1356	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1357		}
1358
1359		/**
#	Line 1295 | Line 1371 | public class JSR166TestCase extends Test
1371		//             r.run();
1372		//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1373		//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1374	<	//             throw new AssertionFailedError("did not return promptly");
1374	>	//             throw new AssertionError("did not return promptly");
1375		//     }
1376
1377		//     void assertTerminatesPromptly(Runnable r) {
#	Line 1308 | Line 1384 | public class JSR166TestCase extends Test
1384		*/
1385		<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1386		long startTime = System.nanoTime();
1387	+	T actual = null;
1388		try {
1389	<	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1389	>	actual = f.get(timeoutMillis, MILLISECONDS);
1390		} catch (Throwable fail) { threadUnexpectedException(fail); }
1391	+	assertEquals(expectedValue, actual);
1392		if (millisElapsedSince(startTime) > timeoutMillis/2)
1393	<	throw new AssertionFailedError("timed get did not return promptly");
1393	>	throw new AssertionError("timed get did not return promptly");
1394		}
1395
1396		<T> void checkTimedGet(Future<T> f, T expectedValue) {
#	Line 1370 | Line 1448 | public class JSR166TestCase extends Test
1448		}
1449		}
1450
1373	–	public abstract class RunnableShouldThrow implements Runnable {
1374	–	protected abstract void realRun() throws Throwable;
1375	–
1376	–	final Class<?> exceptionClass;
1377	–
1378	–	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1379	–	this.exceptionClass = exceptionClass;
1380	–	}
1381	–
1382	–	public final void run() {
1383	–	try {
1384	–	realRun();
1385	–	threadShouldThrow(exceptionClass.getSimpleName());
1386	–	} catch (Throwable t) {
1387	–	if (! exceptionClass.isInstance(t))
1388	–	threadUnexpectedException(t);
1389	–	}
1390	–	}
1391	–	}
1392	–
1451		public abstract class ThreadShouldThrow extends Thread {
1452		protected abstract void realRun() throws Throwable;
1453
#	Line 1402 | Line 1460 | public class JSR166TestCase extends Test
1460		public final void run() {
1461		try {
1462		realRun();
1405	–	threadShouldThrow(exceptionClass.getSimpleName());
1463		} catch (Throwable t) {
1464		if (! exceptionClass.isInstance(t))
1465		threadUnexpectedException(t);
1466	+	return;
1467		}
1468	+	threadShouldThrow(exceptionClass.getSimpleName());
1469		}
1470		}
1471
#	Line 1416 | Line 1475 | public class JSR166TestCase extends Test
1475		public final void run() {
1476		try {
1477		realRun();
1419	–	threadShouldThrow("InterruptedException");
1478		} catch (InterruptedException success) {
1479		threadAssertFalse(Thread.interrupted());
1480	+	return;
1481		} catch (Throwable fail) {
1482		threadUnexpectedException(fail);
1483		}
1484	+	threadShouldThrow("InterruptedException");
1485		}
1486		}
1487
#	Line 1433 | Line 1493 | public class JSR166TestCase extends Test
1493		return realCall();
1494		} catch (Throwable fail) {
1495		threadUnexpectedException(fail);
1436	–	return null;
1496		}
1497	<	}
1439	<	}
1440	<
1441	<	public abstract class CheckedInterruptedCallable<T>
1442	<	implements Callable<T> {
1443	<	protected abstract T realCall() throws Throwable;
1444	<
1445	<	public final T call() {
1446	<	try {
1447	<	T result = realCall();
1448	<	threadShouldThrow("InterruptedException");
1449	<	return result;
1450	<	} catch (InterruptedException success) {
1451	<	threadAssertFalse(Thread.interrupted());
1452	<	} catch (Throwable fail) {
1453	<	threadUnexpectedException(fail);
1454	<	}
1455	<	return null;
1497	>	throw new AssertionError("unreached");
1498		}
1499		}
1500
#	Line 1509 | Line 1551 | public class JSR166TestCase extends Test
1551		}
1552
1553		public void await(CountDownLatch latch, long timeoutMillis) {
1554	+	boolean timedOut = false;
1555		try {
1556	<	if (!latch.await(timeoutMillis, MILLISECONDS))
1514	<	fail("timed out waiting for CountDownLatch for "
1515	<	+ (timeoutMillis/1000) + " sec");
1556	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1557		} catch (Throwable fail) {
1558		threadUnexpectedException(fail);
1559		}
1560	+	if (timedOut)
1561	+	fail("timed out waiting for CountDownLatch for "
1562	+	+ (timeoutMillis/1000) + " sec");
1563		}
1564
1565		public void await(CountDownLatch latch) {
#	Line 1523 | Line 1567 | public class JSR166TestCase extends Test
1567		}
1568
1569		public void await(Semaphore semaphore) {
1570	+	boolean timedOut = false;
1571	+	try {
1572	+	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1573	+	} catch (Throwable fail) {
1574	+	threadUnexpectedException(fail);
1575	+	}
1576	+	if (timedOut)
1577	+	fail("timed out waiting for Semaphore for "
1578	+	+ (LONG_DELAY_MS/1000) + " sec");
1579	+	}
1580	+
1581	+	public void await(CyclicBarrier barrier) {
1582		try {
1583	<	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1528	<	fail("timed out waiting for Semaphore for "
1529	<	+ (LONG_DELAY_MS/1000) + " sec");
1583	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1584		} catch (Throwable fail) {
1585		threadUnexpectedException(fail);
1586		}
#	Line 1546 | Line 1600 | public class JSR166TestCase extends Test
1600		//         long startTime = System.nanoTime();
1601		//         while (!flag.get()) {
1602		//             if (millisElapsedSince(startTime) > timeoutMillis)
1603	<	//                 throw new AssertionFailedError("timed out");
1603	>	//                 throw new AssertionError("timed out");
1604		//             Thread.yield();
1605		//         }
1606		//     }
#	Line 1555 | Line 1609 | public class JSR166TestCase extends Test
1609		public String call() { throw new NullPointerException(); }
1610		}
1611
1558	–	public static class CallableOne implements Callable<Integer> {
1559	–	public Integer call() { return one; }
1560	–	}
1561	–
1562	–	public class ShortRunnable extends CheckedRunnable {
1563	–	protected void realRun() throws Throwable {
1564	–	delay(SHORT_DELAY_MS);
1565	–	}
1566	–	}
1567	–
1568	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1569	–	protected void realRun() throws InterruptedException {
1570	–	delay(SHORT_DELAY_MS);
1571	–	}
1572	–	}
1573	–
1574	–	public class SmallRunnable extends CheckedRunnable {
1575	–	protected void realRun() throws Throwable {
1576	–	delay(SMALL_DELAY_MS);
1577	–	}
1578	–	}
1579	–
1580	–	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1581	–	protected void realRun() {
1582	–	try {
1583	–	delay(SMALL_DELAY_MS);
1584	–	} catch (InterruptedException ok) {}
1585	–	}
1586	–	}
1587	–
1588	–	public class SmallCallable extends CheckedCallable {
1589	–	protected Object realCall() throws InterruptedException {
1590	–	delay(SMALL_DELAY_MS);
1591	–	return Boolean.TRUE;
1592	–	}
1593	–	}
1594	–
1595	–	public class MediumRunnable extends CheckedRunnable {
1596	–	protected void realRun() throws Throwable {
1597	–	delay(MEDIUM_DELAY_MS);
1598	–	}
1599	–	}
1600	–
1601	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1602	–	protected void realRun() throws InterruptedException {
1603	–	delay(MEDIUM_DELAY_MS);
1604	–	}
1605	–	}
1606	–
1612		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1613		return new CheckedRunnable() {
1614		protected void realRun() {
#	Line 1613 | Line 1618 | public class JSR166TestCase extends Test
1618		}};
1619		}
1620
1616	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1617	–	protected void realRun() {
1618	–	try {
1619	–	delay(MEDIUM_DELAY_MS);
1620	–	} catch (InterruptedException ok) {}
1621	–	}
1622	–	}
1623	–
1624	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1625	–	protected void realRun() {
1626	–	try {
1627	–	delay(LONG_DELAY_MS);
1628	–	} catch (InterruptedException ok) {}
1629	–	}
1630	–	}
1631	–
1621		/**
1622		* For use as ThreadFactory in constructors
1623		*/
#	Line 1642 | Line 1631 | public class JSR166TestCase extends Test
1631		boolean isDone();
1632		}
1633
1645	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1646	–	return new TrackedRunnable() {
1647	–	private volatile boolean done = false;
1648	–	public boolean isDone() { return done; }
1649	–	public void run() {
1650	–	try {
1651	–	delay(timeoutMillis);
1652	–	done = true;
1653	–	} catch (InterruptedException ok) {}
1654	–	}
1655	–	};
1656	–	}
1657	–
1658	–	public static class TrackedShortRunnable implements Runnable {
1659	–	public volatile boolean done = false;
1660	–	public void run() {
1661	–	try {
1662	–	delay(SHORT_DELAY_MS);
1663	–	done = true;
1664	–	} catch (InterruptedException ok) {}
1665	–	}
1666	–	}
1667	–
1668	–	public static class TrackedSmallRunnable implements Runnable {
1669	–	public volatile boolean done = false;
1670	–	public void run() {
1671	–	try {
1672	–	delay(SMALL_DELAY_MS);
1673	–	done = true;
1674	–	} catch (InterruptedException ok) {}
1675	–	}
1676	–	}
1677	–
1678	–	public static class TrackedMediumRunnable implements Runnable {
1679	–	public volatile boolean done = false;
1680	–	public void run() {
1681	–	try {
1682	–	delay(MEDIUM_DELAY_MS);
1683	–	done = true;
1684	–	} catch (InterruptedException ok) {}
1685	–	}
1686	–	}
1687	–
1688	–	public static class TrackedLongRunnable implements Runnable {
1689	–	public volatile boolean done = false;
1690	–	public void run() {
1691	–	try {
1692	–	delay(LONG_DELAY_MS);
1693	–	done = true;
1694	–	} catch (InterruptedException ok) {}
1695	–	}
1696	–	}
1697	–
1634		public static class TrackedNoOpRunnable implements Runnable {
1635		public volatile boolean done = false;
1636		public void run() {
#	Line 1702 | Line 1638 | public class JSR166TestCase extends Test
1638		}
1639		}
1640
1705	–	public static class TrackedCallable implements Callable {
1706	–	public volatile boolean done = false;
1707	–	public Object call() {
1708	–	try {
1709	–	delay(SMALL_DELAY_MS);
1710	–	done = true;
1711	–	} catch (InterruptedException ok) {}
1712	–	return Boolean.TRUE;
1713	–	}
1714	–	}
1715	–
1641		/**
1642		* Analog of CheckedRunnable for RecursiveAction
1643		*/
#	Line 1739 | Line 1664 | public class JSR166TestCase extends Test
1664		return realCompute();
1665		} catch (Throwable fail) {
1666		threadUnexpectedException(fail);
1742	–	return null;
1667		}
1668	+	throw new AssertionError("unreached");
1669		}
1670		}
1671
#	Line 1754 | Line 1679 | public class JSR166TestCase extends Test
1679
1680		/**
1681		* A CyclicBarrier that uses timed await and fails with
1682	<	* AssertionFailedErrors instead of throwing checked exceptions.
1682	>	* AssertionErrors instead of throwing checked exceptions.
1683		*/
1684		public static class CheckedBarrier extends CyclicBarrier {
1685		public CheckedBarrier(int parties) { super(parties); }
#	Line 1763 | Line 1688 | public class JSR166TestCase extends Test
1688		try {
1689		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1690		} catch (TimeoutException timedOut) {
1691	<	throw new AssertionFailedError("timed out");
1691	>	throw new AssertionError("timed out");
1692		} catch (Exception fail) {
1693	<	AssertionFailedError afe =
1769	<	new AssertionFailedError("Unexpected exception: " + fail);
1770	<	afe.initCause(fail);
1771	<	throw afe;
1693	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1694		}
1695		}
1696		}
#	Line 1779 | Line 1701 | public class JSR166TestCase extends Test
1701		assertEquals(0, q.size());
1702		assertNull(q.peek());
1703		assertNull(q.poll());
1704	<	assertNull(q.poll(0, MILLISECONDS));
1704	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1705		assertEquals(q.toString(), "[]");
1706		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1707		assertFalse(q.iterator().hasNext());
#	Line 1820 | Line 1742 | public class JSR166TestCase extends Test
1742		}
1743		}
1744
1745	+	void assertImmutable(final Object o) {
1746	+	if (o instanceof Collection) {
1747	+	assertThrows(
1748	+	UnsupportedOperationException.class,
1749	+	new Runnable() { public void run() {
1750	+	((Collection) o).add(null);}});
1751	+	}
1752	+	}
1753	+
1754		@SuppressWarnings("unchecked")
1755		<T> T serialClone(T o) {
1756	+	T clone = null;
1757		try {
1758		ObjectInputStream ois = new ObjectInputStream
1759		(new ByteArrayInputStream(serialBytes(o)));
1760	<	T clone = (T) ois.readObject();
1829	<	assertSame(o.getClass(), clone.getClass());
1830	<	return clone;
1760	>	clone = (T) ois.readObject();
1761		} catch (Throwable fail) {
1762		threadUnexpectedException(fail);
1763	+	}
1764	+	if (o == clone) assertImmutable(o);
1765	+	else assertSame(o.getClass(), clone.getClass());
1766	+	return clone;
1767	+	}
1768	+
1769	+	/**
1770	+	* A version of serialClone that leaves error handling (for
1771	+	* e.g. NotSerializableException) up to the caller.
1772	+	*/
1773	+	@SuppressWarnings("unchecked")
1774	+	<T> T serialClonePossiblyFailing(T o)
1775	+	throws ReflectiveOperationException, java.io.IOException {
1776	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1777	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1778	+	oos.writeObject(o);
1779	+	oos.flush();
1780	+	oos.close();
1781	+	ObjectInputStream ois = new ObjectInputStream
1782	+	(new ByteArrayInputStream(bos.toByteArray()));
1783	+	T clone = (T) ois.readObject();
1784	+	if (o == clone) assertImmutable(o);
1785	+	else assertSame(o.getClass(), clone.getClass());
1786	+	return clone;
1787	+	}
1788	+
1789	+	/**
1790	+	* If o implements Cloneable and has a public clone method,
1791	+	* returns a clone of o, else null.
1792	+	*/
1793	+	@SuppressWarnings("unchecked")
1794	+	<T> T cloneableClone(T o) {
1795	+	if (!(o instanceof Cloneable)) return null;
1796	+	final T clone;
1797	+	try {
1798	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1799	+	} catch (NoSuchMethodException ok) {
1800		return null;
1801	+	} catch (ReflectiveOperationException unexpected) {
1802	+	throw new Error(unexpected);
1803		}
1804	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1805	+	assertSame(o.getClass(), clone.getClass());
1806	+	return clone;
1807		}
1808
1809		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
#	Line 1841 | Line 1813 | public class JSR166TestCase extends Test
1813		try { throwingAction.run(); }
1814		catch (Throwable t) {
1815		threw = true;
1816	<	if (!expectedExceptionClass.isInstance(t)) {
1817	<	AssertionFailedError afe =
1818	<	new AssertionFailedError
1819	<	("Expected " + expectedExceptionClass.getName() +
1820	<	", got " + t.getClass().getName());
1849	<	afe.initCause(t);
1850	<	threadUnexpectedException(afe);
1851	<	}
1816	>	if (!expectedExceptionClass.isInstance(t))
1817	>	throw new AssertionError(
1818	>	"Expected " + expectedExceptionClass.getName() +
1819	>	", got " + t.getClass().getName(),
1820	>	t);
1821		}
1822		if (!threw)
1823		shouldThrow(expectedExceptionClass.getName());
#	Line 1880 | Line 1849 | public class JSR166TestCase extends Test
1849		static <T> void shuffle(T[] array) {
1850		Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1851		}
1852	+
1853	+	/**
1854	+	* Returns the same String as would be returned by {@link
1855	+	* Object#toString}, whether or not the given object's class
1856	+	* overrides toString().
1857	+	*
1858	+	* @see System#identityHashCode
1859	+	*/
1860	+	static String identityString(Object x) {
1861	+	return x.getClass().getName()
1862	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1863	+	}
1864	+
1865	+	// --- Shared assertions for Executor tests ---
1866	+
1867	+	/**
1868	+	* Returns maximum number of tasks that can be submitted to given
1869	+	* pool (with bounded queue) before saturation (when submission
1870	+	* throws RejectedExecutionException).
1871	+	*/
1872	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1873	+	BlockingQueue<Runnable> q = pool.getQueue();
1874	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1875	+	}
1876	+
1877	+	@SuppressWarnings("FutureReturnValueIgnored")
1878	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1879	+	try {
1880	+	e.execute((Runnable) null);
1881	+	shouldThrow();
1882	+	} catch (NullPointerException success) {}
1883	+
1884	+	if (! (e instanceof ExecutorService)) return;
1885	+	ExecutorService es = (ExecutorService) e;
1886	+	try {
1887	+	es.submit((Runnable) null);
1888	+	shouldThrow();
1889	+	} catch (NullPointerException success) {}
1890	+	try {
1891	+	es.submit((Runnable) null, Boolean.TRUE);
1892	+	shouldThrow();
1893	+	} catch (NullPointerException success) {}
1894	+	try {
1895	+	es.submit((Callable) null);
1896	+	shouldThrow();
1897	+	} catch (NullPointerException success) {}
1898	+
1899	+	if (! (e instanceof ScheduledExecutorService)) return;
1900	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1901	+	try {
1902	+	ses.schedule((Runnable) null,
1903	+	randomTimeout(), randomTimeUnit());
1904	+	shouldThrow();
1905	+	} catch (NullPointerException success) {}
1906	+	try {
1907	+	ses.schedule((Callable) null,
1908	+	randomTimeout(), randomTimeUnit());
1909	+	shouldThrow();
1910	+	} catch (NullPointerException success) {}
1911	+	try {
1912	+	ses.scheduleAtFixedRate((Runnable) null,
1913	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1914	+	shouldThrow();
1915	+	} catch (NullPointerException success) {}
1916	+	try {
1917	+	ses.scheduleWithFixedDelay((Runnable) null,
1918	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1919	+	shouldThrow();
1920	+	} catch (NullPointerException success) {}
1921	+	}
1922	+
1923	+	void setRejectedExecutionHandler(
1924	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1925	+	p.setRejectedExecutionHandler(handler);
1926	+	assertSame(handler, p.getRejectedExecutionHandler());
1927	+	}
1928	+
1929	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1930	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1931	+	final long savedTaskCount = p.getTaskCount();
1932	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1933	+	final int savedQueueSize = p.getQueue().size();
1934	+	final boolean stock = (p.getClass().getClassLoader() == null);
1935	+
1936	+	Runnable r = () -> {};
1937	+	Callable<Boolean> c = () -> Boolean.TRUE;
1938	+
1939	+	class Recorder implements RejectedExecutionHandler {
1940	+	public volatile Runnable r = null;
1941	+	public volatile ThreadPoolExecutor p = null;
1942	+	public void reset() { r = null; p = null; }
1943	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1944	+	assertNull(this.r);
1945	+	assertNull(this.p);
1946	+	this.r = r;
1947	+	this.p = p;
1948	+	}
1949	+	}
1950	+
1951	+	// check custom handler is invoked exactly once per task
1952	+	Recorder recorder = new Recorder();
1953	+	setRejectedExecutionHandler(p, recorder);
1954	+	for (int i = 2; i--> 0; ) {
1955	+	recorder.reset();
1956	+	p.execute(r);
1957	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1958	+	assertSame(r, recorder.r);
1959	+	assertSame(p, recorder.p);
1960	+
1961	+	recorder.reset();
1962	+	assertFalse(p.submit(r).isDone());
1963	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1964	+	assertSame(p, recorder.p);
1965	+
1966	+	recorder.reset();
1967	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1968	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1969	+	assertSame(p, recorder.p);
1970	+
1971	+	recorder.reset();
1972	+	assertFalse(p.submit(c).isDone());
1973	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1974	+	assertSame(p, recorder.p);
1975	+
1976	+	if (p instanceof ScheduledExecutorService) {
1977	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
1978	+	ScheduledFuture<?> future;
1979	+
1980	+	recorder.reset();
1981	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
1982	+	assertFalse(future.isDone());
1983	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1984	+	assertSame(p, recorder.p);
1985	+
1986	+	recorder.reset();
1987	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
1988	+	assertFalse(future.isDone());
1989	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1990	+	assertSame(p, recorder.p);
1991	+
1992	+	recorder.reset();
1993	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1994	+	assertFalse(future.isDone());
1995	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1996	+	assertSame(p, recorder.p);
1997	+
1998	+	recorder.reset();
1999	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2000	+	assertFalse(future.isDone());
2001	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2002	+	assertSame(p, recorder.p);
2003	+	}
2004	+	}
2005	+
2006	+	// Checking our custom handler above should be sufficient, but
2007	+	// we add some integration tests of standard handlers.
2008	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2009	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2010	+
2011	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2012	+	try {
2013	+	p.execute(setThread);
2014	+	shouldThrow();
2015	+	} catch (RejectedExecutionException success) {}
2016	+	assertNull(thread.get());
2017	+
2018	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2019	+	p.execute(setThread);
2020	+	assertNull(thread.get());
2021	+
2022	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2023	+	p.execute(setThread);
2024	+	if (p.isShutdown())
2025	+	assertNull(thread.get());
2026	+	else
2027	+	assertSame(Thread.currentThread(), thread.get());
2028	+
2029	+	setRejectedExecutionHandler(p, savedHandler);
2030	+
2031	+	// check that pool was not perturbed by handlers
2032	+	assertEquals(savedTaskCount, p.getTaskCount());
2033	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2034	+	assertEquals(savedQueueSize, p.getQueue().size());
2035	+	}
2036	+
2037	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2038	+	assertEquals(x, y);
2039	+	assertEquals(y, x);
2040	+	assertEquals(x.isEmpty(), y.isEmpty());
2041	+	assertEquals(x.size(), y.size());
2042	+	if (x instanceof List) {
2043	+	assertEquals(x.toString(), y.toString());
2044	+	}
2045	+	if (x instanceof List || x instanceof Set) {
2046	+	assertEquals(x.hashCode(), y.hashCode());
2047	+	}
2048	+	if (x instanceof List || x instanceof Deque) {
2049	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2050	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2051	+	y.toArray(new Object[0])));
2052	+	}
2053	+	}
2054	+
2055	+	/**
2056	+	* A weaker form of assertCollectionsEquals which does not insist
2057	+	* that the two collections satisfy Object#equals(Object), since
2058	+	* they may use identity semantics as Deques do.
2059	+	*/
2060	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2061	+	if (x instanceof List || x instanceof Set)
2062	+	assertCollectionsEquals(x, y);
2063	+	else {
2064	+	assertEquals(x.isEmpty(), y.isEmpty());
2065	+	assertEquals(x.size(), y.size());
2066	+	assertEquals(new HashSet(x), new HashSet(y));
2067	+	if (x instanceof Deque) {
2068	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2069	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2070	+	y.toArray(new Object[0])));
2071	+	}
2072	+	}
2073	+	}
2074		}

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