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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.56 by jsr166, Sun Oct 3 23:59:05 2010 UTC vs.
Revision 1.169 by jsr166, Thu Oct 8 21:50:26 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	–	import junit.framework.*;
10	–	import java.util.PropertyPermission;
11	–	import java.util.concurrent.*;
12	–	import java.util.concurrent.atomic.AtomicReference;
9		import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	+	import static java.util.concurrent.TimeUnit.MINUTES;
11	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	+
13	+	import java.io.ByteArrayInputStream;
14	+	import java.io.ByteArrayOutputStream;
15	+	import java.io.ObjectInputStream;
16	+	import java.io.ObjectOutputStream;
17	+	import java.lang.management.ManagementFactory;
18	+	import java.lang.management.ThreadInfo;
19	+	import java.lang.management.ThreadMXBean;
20	+	import java.lang.reflect.Constructor;
21	+	import java.lang.reflect.Method;
22	+	import java.lang.reflect.Modifier;
23		import java.security.CodeSource;
24		import java.security.Permission;
25		import java.security.PermissionCollection;
#	Line 18 | Line 27 | import java.security.Permissions;
27		import java.security.Policy;
28		import java.security.ProtectionDomain;
29		import java.security.SecurityPermission;
30	+	import java.util.ArrayList;
31	+	import java.util.Arrays;
32	+	import java.util.Date;
33	+	import java.util.Enumeration;
34	+	import java.util.Iterator;
35	+	import java.util.List;
36	+	import java.util.NoSuchElementException;
37	+	import java.util.PropertyPermission;
38	+	import java.util.concurrent.BlockingQueue;
39	+	import java.util.concurrent.Callable;
40	+	import java.util.concurrent.CountDownLatch;
41	+	import java.util.concurrent.CyclicBarrier;
42	+	import java.util.concurrent.ExecutionException;
43	+	import java.util.concurrent.Executors;
44	+	import java.util.concurrent.ExecutorService;
45	+	import java.util.concurrent.ForkJoinPool;
46	+	import java.util.concurrent.Future;
47	+	import java.util.concurrent.RecursiveAction;
48	+	import java.util.concurrent.RecursiveTask;
49	+	import java.util.concurrent.RejectedExecutionHandler;
50	+	import java.util.concurrent.Semaphore;
51	+	import java.util.concurrent.ThreadFactory;
52	+	import java.util.concurrent.ThreadPoolExecutor;
53	+	import java.util.concurrent.TimeoutException;
54	+	import java.util.concurrent.atomic.AtomicReference;
55	+	import java.util.regex.Pattern;
56	+
57	+	import junit.framework.AssertionFailedError;
58	+	import junit.framework.Test;
59	+	import junit.framework.TestCase;
60	+	import junit.framework.TestResult;
61	+	import junit.framework.TestSuite;
62
63		/**
64		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 29 | Line 70 | import java.security.SecurityPermission;
70		*
71		* <ol>
72		*
73	<	* <li> All assertions in code running in generated threads must use
73	>	* <li>All assertions in code running in generated threads must use
74		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
75		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
76		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
77		* particularly recommended) for other code to use these forms too.
78		* Only the most typically used JUnit assertion methods are defined
79	<	* this way, but enough to live with.</li>
79	>	* this way, but enough to live with.
80		*
81	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
81	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
82		* to invoke {@code super.setUp} and {@code super.tearDown} within
83		* them. These methods are used to clear and check for thread
84	<	* assertion failures.</li>
84	>	* assertion failures.
85		*
86		* <li>All delays and timeouts must use one of the constants {@code
87		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 51 | Line 92 | import java.security.SecurityPermission;
92		* is always discriminable as larger than SHORT and smaller than
93		* MEDIUM.  And so on. These constants are set to conservative values,
94		* but even so, if there is ever any doubt, they can all be increased
95	<	* in one spot to rerun tests on slower platforms.</li>
95	>	* in one spot to rerun tests on slower platforms.
96		*
97	<	* <li> All threads generated must be joined inside each test case
97	>	* <li>All threads generated must be joined inside each test case
98		* method (or {@code fail} to do so) before returning from the
99		* method. The {@code joinPool} method can be used to do this when
100	<	* using Executors.</li>
100	>	* using Executors.
101		*
102		* </ol>
103		*
104	<	* <p> <b>Other notes</b>
104	>	* <p><b>Other notes</b>
105		* <ul>
106		*
107	<	* <li> Usually, there is one testcase method per JSR166 method
107	>	* <li>Usually, there is one testcase method per JSR166 method
108		* covering "normal" operation, and then as many exception-testing
109		* methods as there are exceptions the method can throw. Sometimes
110		* there are multiple tests per JSR166 method when the different
111		* "normal" behaviors differ significantly. And sometimes testcases
112		* cover multiple methods when they cannot be tested in
113	<	* isolation.</li>
113	>	* isolation.
114		*
115	<	* <li> The documentation style for testcases is to provide as javadoc
115	>	* <li>The documentation style for testcases is to provide as javadoc
116		* a simple sentence or two describing the property that the testcase
117		* method purports to test. The javadocs do not say anything about how
118	<	* the property is tested. To find out, read the code.</li>
118	>	* the property is tested. To find out, read the code.
119		*
120	<	* <li> These tests are "conformance tests", and do not attempt to
120	>	* <li>These tests are "conformance tests", and do not attempt to
121		* test throughput, latency, scalability or other performance factors
122		* (see the separate "jtreg" tests for a set intended to check these
123		* for the most central aspects of functionality.) So, most tests use
124		* the smallest sensible numbers of threads, collection sizes, etc
125	<	* needed to check basic conformance.</li>
125	>	* needed to check basic conformance.
126		*
127		* <li>The test classes currently do not declare inclusion in
128		* any particular package to simplify things for people integrating
129	<	* them in TCK test suites.</li>
129	>	* them in TCK test suites.
130		*
131	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
132	<	* runs all JSR166 unit tests.</li>
131	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
132	>	* runs all JSR166 unit tests.
133		*
134		* </ul>
135		*/
#	Line 96 | Line 137 | public class JSR166TestCase extends Test
137		private static final boolean useSecurityManager =
138		Boolean.getBoolean("jsr166.useSecurityManager");
139
140	+	protected static final boolean expensiveTests =
141	+	Boolean.getBoolean("jsr166.expensiveTests");
142	+
143	+	/**
144	+	* If true, also run tests that are not part of the official tck
145	+	* because they test unspecified implementation details.
146	+	*/
147	+	protected static final boolean testImplementationDetails =
148	+	Boolean.getBoolean("jsr166.testImplementationDetails");
149	+
150	+	/**
151	+	* If true, report on stdout all "slow" tests, that is, ones that
152	+	* take more than profileThreshold milliseconds to execute.
153	+	*/
154	+	private static final boolean profileTests =
155	+	Boolean.getBoolean("jsr166.profileTests");
156	+
157	+	/**
158	+	* The number of milliseconds that tests are permitted for
159	+	* execution without being reported, when profileTests is set.
160	+	*/
161	+	private static final long profileThreshold =
162	+	Long.getLong("jsr166.profileThreshold", 100);
163	+
164	+	/**
165	+	* The number of repetitions per test (for tickling rare bugs).
166	+	*/
167	+	private static final int runsPerTest =
168	+	Integer.getInteger("jsr166.runsPerTest", 1);
169	+
170	+	/**
171	+	* The number of repetitions of the test suite (for finding leaks?).
172	+	*/
173	+	private static final int suiteRuns =
174	+	Integer.getInteger("jsr166.suiteRuns", 1);
175	+
176	+	public JSR166TestCase() { super(); }
177	+	public JSR166TestCase(String name) { super(name); }
178	+
179	+	/**
180	+	* A filter for tests to run, matching strings of the form
181	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
182	+	* Usefully combined with jsr166.runsPerTest.
183	+	*/
184	+	private static final Pattern methodFilter = methodFilter();
185	+
186	+	private static Pattern methodFilter() {
187	+	String regex = System.getProperty("jsr166.methodFilter");
188	+	return (regex == null) ? null : Pattern.compile(regex);
189	+	}
190	+
191	+	static volatile TestCase currentTestCase;
192	+	static {
193	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
194	+	// avoid spurious reports with enormous runsPerTest
195	+	final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
196	+	for (TestCase lastTestCase = currentTestCase;;) {
197	+	try { MINUTES.sleep(timeoutMinutes); }
198	+	catch (InterruptedException unexpected) { break; }
199	+	if (lastTestCase == currentTestCase) {
200	+	System.err.println
201	+	("Looks like we're stuck running test: "
202	+	+ lastTestCase);
203	+	System.err.println("availableProcessors=" +
204	+	Runtime.getRuntime().availableProcessors());
205	+	dumpTestThreads();
206	+	// one stack dump is probably enough; more would be spam
207	+	break;
208	+	}
209	+	lastTestCase = currentTestCase;
210	+	}}};
211	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
212	+	thread.setDaemon(true);
213	+	thread.start();
214	+	}
215	+
216	+	public void runBare() throws Throwable {
217	+	currentTestCase = this;
218	+	if (methodFilter == null
219	+	|| methodFilter.matcher(toString()).find())
220	+	super.runBare();
221	+	}
222	+
223	+	protected void runTest() throws Throwable {
224	+	for (int i = 0; i < runsPerTest; i++) {
225	+	if (profileTests)
226	+	runTestProfiled();
227	+	else
228	+	super.runTest();
229	+	}
230	+	}
231	+
232	+	protected void runTestProfiled() throws Throwable {
233	+	for (int i = 0; i < 2; i++) {
234	+	long startTime = System.nanoTime();
235	+	super.runTest();
236	+	long elapsedMillis = millisElapsedSince(startTime);
237	+	if (elapsedMillis < profileThreshold)
238	+	break;
239	+	// Never report first run of any test; treat it as a
240	+	// warmup run, notably to trigger all needed classloading,
241	+	if (i > 0)
242	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
243	+	}
244	+	}
245	+
246		/**
247	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
247	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
248		*/
249		public static void main(String[] args) {
250	+	main(suite(), args);
251	+	}
252	+
253	+	/**
254	+	* Runs all unit tests in the given test suite.
255	+	* Actual behavior influenced by jsr166.* system properties.
256	+	*/
257	+	static void main(Test suite, String[] args) {
258		if (useSecurityManager) {
259		System.err.println("Setting a permissive security manager");
260		Policy.setPolicy(permissivePolicy());
261		System.setSecurityManager(new SecurityManager());
262		}
263	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
264	<
265	<	Test s = suite();
266	<	for (int i = 0; i < iters; ++i) {
112	<	junit.textui.TestRunner.run(s);
263	>	for (int i = 0; i < suiteRuns; i++) {
264	>	TestResult result = junit.textui.TestRunner.run(suite);
265	>	if (!result.wasSuccessful())
266	>	System.exit(1);
267		System.gc();
268		System.runFinalization();
269		}
270	<	System.exit(0);
270	>	}
271	>
272	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
273	>	TestSuite suite = new TestSuite();
274	>	for (Object suiteOrClass : suiteOrClasses) {
275	>	if (suiteOrClass instanceof TestSuite)
276	>	suite.addTest((TestSuite) suiteOrClass);
277	>	else if (suiteOrClass instanceof Class)
278	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
279	>	else
280	>	throw new ClassCastException("not a test suite or class");
281	>	}
282	>	return suite;
283	>	}
284	>
285	>	public static void addNamedTestClasses(TestSuite suite,
286	>	String... testClassNames) {
287	>	for (String testClassName : testClassNames) {
288	>	try {
289	>	Class<?> testClass = Class.forName(testClassName);
290	>	Method m = testClass.getDeclaredMethod("suite",
291	>	new Class<?>[0]);
292	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
293	>	} catch (Exception e) {
294	>	throw new Error("Missing test class", e);
295	>	}
296	>	}
297	>	}
298	>
299	>	public static final double JAVA_CLASS_VERSION;
300	>	public static final String JAVA_SPECIFICATION_VERSION;
301	>	static {
302	>	try {
303	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
304	>	new java.security.PrivilegedAction<Double>() {
305	>	public Double run() {
306	>	return Double.valueOf(System.getProperty("java.class.version"));}});
307	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
308	>	new java.security.PrivilegedAction<String>() {
309	>	public String run() {
310	>	return System.getProperty("java.specification.version");}});
311	>	} catch (Throwable t) {
312	>	throw new Error(t);
313	>	}
314	>	}
315	>
316	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
317	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
318	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
319	>	public static boolean atLeastJava9() {
320	>	return JAVA_CLASS_VERSION >= 53.0
321	>	// As of 2015-09, java9 still uses 52.0 class file version
322	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
323	>	}
324	>	public static boolean atLeastJava10() {
325	>	return JAVA_CLASS_VERSION >= 54.0
326	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
327		}
328
329		/**
330	<	* Collects all JSR166 unit tests as one suite
330	>	* Collects all JSR166 unit tests as one suite.
331		*/
332		public static Test suite() {
333	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
334	<
335	<	suite.addTest(ForkJoinPoolTest.suite());
336	<	suite.addTest(ForkJoinTaskTest.suite());
337	<	suite.addTest(RecursiveActionTest.suite());
338	<	suite.addTest(RecursiveTaskTest.suite());
339	<	suite.addTest(LinkedTransferQueueTest.suite());
340	<	suite.addTest(PhaserTest.suite());
341	<	suite.addTest(ThreadLocalRandomTest.suite());
342	<	suite.addTest(AbstractExecutorServiceTest.suite());
343	<	suite.addTest(AbstractQueueTest.suite());
344	<	suite.addTest(AbstractQueuedSynchronizerTest.suite());
345	<	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
346	<	suite.addTest(ArrayBlockingQueueTest.suite());
347	<	suite.addTest(ArrayDequeTest.suite());
348	<	suite.addTest(AtomicBooleanTest.suite());
349	<	suite.addTest(AtomicIntegerArrayTest.suite());
350	<	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
351	<	suite.addTest(AtomicIntegerTest.suite());
352	<	suite.addTest(AtomicLongArrayTest.suite());
353	<	suite.addTest(AtomicLongFieldUpdaterTest.suite());
354	<	suite.addTest(AtomicLongTest.suite());
355	<	suite.addTest(AtomicMarkableReferenceTest.suite());
356	<	suite.addTest(AtomicReferenceArrayTest.suite());
357	<	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
358	<	suite.addTest(AtomicReferenceTest.suite());
359	<	suite.addTest(AtomicStampedReferenceTest.suite());
360	<	suite.addTest(ConcurrentHashMapTest.suite());
361	<	suite.addTest(ConcurrentLinkedDequeTest.suite());
362	<	suite.addTest(ConcurrentLinkedQueueTest.suite());
363	<	suite.addTest(ConcurrentSkipListMapTest.suite());
364	<	suite.addTest(ConcurrentSkipListSubMapTest.suite());
365	<	suite.addTest(ConcurrentSkipListSetTest.suite());
366	<	suite.addTest(ConcurrentSkipListSubSetTest.suite());
367	<	suite.addTest(CopyOnWriteArrayListTest.suite());
368	<	suite.addTest(CopyOnWriteArraySetTest.suite());
369	<	suite.addTest(CountDownLatchTest.suite());
370	<	suite.addTest(CyclicBarrierTest.suite());
371	<	suite.addTest(DelayQueueTest.suite());
372	<	suite.addTest(EntryTest.suite());
373	<	suite.addTest(ExchangerTest.suite());
374	<	suite.addTest(ExecutorsTest.suite());
375	<	suite.addTest(ExecutorCompletionServiceTest.suite());
376	<	suite.addTest(FutureTaskTest.suite());
377	<	suite.addTest(LinkedBlockingDequeTest.suite());
378	<	suite.addTest(LinkedBlockingQueueTest.suite());
379	<	suite.addTest(LinkedListTest.suite());
380	<	suite.addTest(LockSupportTest.suite());
381	<	suite.addTest(PriorityBlockingQueueTest.suite());
382	<	suite.addTest(PriorityQueueTest.suite());
383	<	suite.addTest(ReentrantLockTest.suite());
384	<	suite.addTest(ReentrantReadWriteLockTest.suite());
385	<	suite.addTest(ScheduledExecutorTest.suite());
386	<	suite.addTest(ScheduledExecutorSubclassTest.suite());
387	<	suite.addTest(SemaphoreTest.suite());
388	<	suite.addTest(SynchronousQueueTest.suite());
389	<	suite.addTest(SystemTest.suite());
390	<	suite.addTest(ThreadLocalTest.suite());
391	<	suite.addTest(ThreadPoolExecutorTest.suite());
392	<	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
393	<	suite.addTest(ThreadTest.suite());
394	<	suite.addTest(TimeUnitTest.suite());
395	<	suite.addTest(TreeMapTest.suite());
396	<	suite.addTest(TreeSetTest.suite());
397	<	suite.addTest(TreeSubMapTest.suite());
398	<	suite.addTest(TreeSubSetTest.suite());
333	>	// Java7+ test classes
334	>	TestSuite suite = newTestSuite(
335	>	ForkJoinPoolTest.suite(),
336	>	ForkJoinTaskTest.suite(),
337	>	RecursiveActionTest.suite(),
338	>	RecursiveTaskTest.suite(),
339	>	LinkedTransferQueueTest.suite(),
340	>	PhaserTest.suite(),
341	>	ThreadLocalRandomTest.suite(),
342	>	AbstractExecutorServiceTest.suite(),
343	>	AbstractQueueTest.suite(),
344	>	AbstractQueuedSynchronizerTest.suite(),
345	>	AbstractQueuedLongSynchronizerTest.suite(),
346	>	ArrayBlockingQueueTest.suite(),
347	>	ArrayDequeTest.suite(),
348	>	AtomicBooleanTest.suite(),
349	>	AtomicIntegerArrayTest.suite(),
350	>	AtomicIntegerFieldUpdaterTest.suite(),
351	>	AtomicIntegerTest.suite(),
352	>	AtomicLongArrayTest.suite(),
353	>	AtomicLongFieldUpdaterTest.suite(),
354	>	AtomicLongTest.suite(),
355	>	AtomicMarkableReferenceTest.suite(),
356	>	AtomicReferenceArrayTest.suite(),
357	>	AtomicReferenceFieldUpdaterTest.suite(),
358	>	AtomicReferenceTest.suite(),
359	>	AtomicStampedReferenceTest.suite(),
360	>	ConcurrentHashMapTest.suite(),
361	>	ConcurrentLinkedDequeTest.suite(),
362	>	ConcurrentLinkedQueueTest.suite(),
363	>	ConcurrentSkipListMapTest.suite(),
364	>	ConcurrentSkipListSubMapTest.suite(),
365	>	ConcurrentSkipListSetTest.suite(),
366	>	ConcurrentSkipListSubSetTest.suite(),
367	>	CopyOnWriteArrayListTest.suite(),
368	>	CopyOnWriteArraySetTest.suite(),
369	>	CountDownLatchTest.suite(),
370	>	CyclicBarrierTest.suite(),
371	>	DelayQueueTest.suite(),
372	>	EntryTest.suite(),
373	>	ExchangerTest.suite(),
374	>	ExecutorsTest.suite(),
375	>	ExecutorCompletionServiceTest.suite(),
376	>	FutureTaskTest.suite(),
377	>	LinkedBlockingDequeTest.suite(),
378	>	LinkedBlockingQueueTest.suite(),
379	>	LinkedListTest.suite(),
380	>	LockSupportTest.suite(),
381	>	PriorityBlockingQueueTest.suite(),
382	>	PriorityQueueTest.suite(),
383	>	ReentrantLockTest.suite(),
384	>	ReentrantReadWriteLockTest.suite(),
385	>	ScheduledExecutorTest.suite(),
386	>	ScheduledExecutorSubclassTest.suite(),
387	>	SemaphoreTest.suite(),
388	>	SynchronousQueueTest.suite(),
389	>	SystemTest.suite(),
390	>	ThreadLocalTest.suite(),
391	>	ThreadPoolExecutorTest.suite(),
392	>	ThreadPoolExecutorSubclassTest.suite(),
393	>	ThreadTest.suite(),
394	>	TimeUnitTest.suite(),
395	>	TreeMapTest.suite(),
396	>	TreeSetTest.suite(),
397	>	TreeSubMapTest.suite(),
398	>	TreeSubSetTest.suite());
399	>
400	>	// Java8+ test classes
401	>	if (atLeastJava8()) {
402	>	String[] java8TestClassNames = {
403	>	"Atomic8Test",
404	>	"CompletableFutureTest",
405	>	"ConcurrentHashMap8Test",
406	>	"CountedCompleterTest",
407	>	"DoubleAccumulatorTest",
408	>	"DoubleAdderTest",
409	>	"ForkJoinPool8Test",
410	>	"ForkJoinTask8Test",
411	>	"LongAccumulatorTest",
412	>	"LongAdderTest",
413	>	"SplittableRandomTest",
414	>	"StampedLockTest",
415	>	"SubmissionPublisherTest",
416	>	"ThreadLocalRandom8Test",
417	>	};
418	>	addNamedTestClasses(suite, java8TestClassNames);
419	>	}
420	>
421	>	// Java9+ test classes
422	>	if (atLeastJava9()) {
423	>	String[] java9TestClassNames = {
424	>	// Currently empty, but expecting varhandle tests
425	>	};
426	>	addNamedTestClasses(suite, java9TestClassNames);
427	>	}
428
429		return suite;
430		}
431
432	+	/** Returns list of junit-style test method names in given class. */
433	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
434	+	Method[] methods = testClass.getDeclaredMethods();
435	+	ArrayList<String> names = new ArrayList<String>(methods.length);
436	+	for (Method method : methods) {
437	+	if (method.getName().startsWith("test")
438	+	&& Modifier.isPublic(method.getModifiers())
439	+	// method.getParameterCount() requires jdk8+
440	+	&& method.getParameterTypes().length == 0) {
441	+	names.add(method.getName());
442	+	}
443	+	}
444	+	return names;
445	+	}
446	+
447	+	/**
448	+	* Returns junit-style testSuite for the given test class, but
449	+	* parameterized by passing extra data to each test.
450	+	*/
451	+	public static <ExtraData> Test parameterizedTestSuite
452	+	(Class<? extends JSR166TestCase> testClass,
453	+	Class<ExtraData> dataClass,
454	+	ExtraData data) {
455	+	try {
456	+	TestSuite suite = new TestSuite();
457	+	Constructor c =
458	+	testClass.getDeclaredConstructor(dataClass, String.class);
459	+	for (String methodName : testMethodNames(testClass))
460	+	suite.addTest((Test) c.newInstance(data, methodName));
461	+	return suite;
462	+	} catch (Exception e) {
463	+	throw new Error(e);
464	+	}
465	+	}
466	+
467	+	/**
468	+	* Returns junit-style testSuite for the jdk8 extension of the
469	+	* given test class, but parameterized by passing extra data to
470	+	* each test.  Uses reflection to allow compilation in jdk7.
471	+	*/
472	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
473	+	(Class<? extends JSR166TestCase> testClass,
474	+	Class<ExtraData> dataClass,
475	+	ExtraData data) {
476	+	if (atLeastJava8()) {
477	+	String name = testClass.getName();
478	+	String name8 = name.replaceAll("Test$", "8Test");
479	+	if (name.equals(name8)) throw new Error(name);
480	+	try {
481	+	return (Test)
482	+	Class.forName(name8)
483	+	.getMethod("testSuite", new Class[] { dataClass })
484	+	.invoke(null, data);
485	+	} catch (Exception e) {
486	+	throw new Error(e);
487	+	}
488	+	} else {
489	+	return new TestSuite();
490	+	}
491	+	}
492	+
493	+	// Delays for timing-dependent tests, in milliseconds.
494
495		public static long SHORT_DELAY_MS;
496		public static long SMALL_DELAY_MS;
497		public static long MEDIUM_DELAY_MS;
498		public static long LONG_DELAY_MS;
499
199	–
500		/**
501		* Returns the shortest timed delay. This could
502		* be reimplemented to use for example a Property.
#	Line 205 | Line 505 | public class JSR166TestCase extends Test
505		return 50;
506		}
507
208	–
508		/**
509		* Sets delays as multiples of SHORT_DELAY.
510		*/
#	Line 213 | Line 512 | public class JSR166TestCase extends Test
512		SHORT_DELAY_MS = getShortDelay();
513		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
514		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
515	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
515	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
516	>	}
517	>
518	>	/**
519	>	* Returns a timeout in milliseconds to be used in tests that
520	>	* verify that operations block or time out.
521	>	*/
522	>	long timeoutMillis() {
523	>	return SHORT_DELAY_MS / 4;
524	>	}
525	>
526	>	/**
527	>	* Returns a new Date instance representing a time at least
528	>	* delayMillis milliseconds in the future.
529	>	*/
530	>	Date delayedDate(long delayMillis) {
531	>	// Add 1 because currentTimeMillis is known to round into the past.
532	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
533		}
534
535		/**
#	Line 229 | Line 545 | public class JSR166TestCase extends Test
545		* the same test have no effect.
546		*/
547		public void threadRecordFailure(Throwable t) {
548	+	System.err.println(t);
549	+	dumpTestThreads();
550		threadFailure.compareAndSet(null, t);
551		}
552
#	Line 236 | Line 554 | public class JSR166TestCase extends Test
554		setDelays();
555		}
556
557	+	void tearDownFail(String format, Object... args) {
558	+	String msg = toString() + ": " + String.format(format, args);
559	+	System.err.println(msg);
560	+	dumpTestThreads();
561	+	throw new AssertionFailedError(msg);
562	+	}
563	+
564		/**
565	+	* Extra checks that get done for all test cases.
566	+	*
567		* Triggers test case failure if any thread assertions have failed,
568		* by rethrowing, in the test harness thread, any exception recorded
569		* earlier by threadRecordFailure.
570	+	*
571	+	* Triggers test case failure if interrupt status is set in the main thread.
572		*/
573		public void tearDown() throws Exception {
574	<	Throwable t = threadFailure.get();
574	>	Throwable t = threadFailure.getAndSet(null);
575		if (t != null) {
576		if (t instanceof Error)
577		throw (Error) t;
#	Line 250 | Line 579 | public class JSR166TestCase extends Test
579		throw (RuntimeException) t;
580		else if (t instanceof Exception)
581		throw (Exception) t;
582	<	else
583	<	throw new AssertionError(t);
582	>	else {
583	>	AssertionFailedError afe =
584	>	new AssertionFailedError(t.toString());
585	>	afe.initCause(t);
586	>	throw afe;
587	>	}
588	>	}
589	>
590	>	if (Thread.interrupted())
591	>	tearDownFail("interrupt status set in main thread");
592	>
593	>	checkForkJoinPoolThreadLeaks();
594	>	}
595	>
596	>	/**
597	>	* Finds missing PoolCleaners
598	>	*/
599	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
600	>	Thread[] survivors = new Thread[7];
601	>	int count = Thread.enumerate(survivors);
602	>	for (int i = 0; i < count; i++) {
603	>	Thread thread = survivors[i];
604	>	String name = thread.getName();
605	>	if (name.startsWith("ForkJoinPool-")) {
606	>	// give thread some time to terminate
607	>	thread.join(LONG_DELAY_MS);
608	>	if (thread.isAlive())
609	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
610	>	thread);
611	>	}
612		}
613	+
614	+	if (!ForkJoinPool.commonPool()
615	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
616	+	tearDownFail("ForkJoin common pool thread stuck");
617		}
618
619		/**
620		* Just like fail(reason), but additionally recording (using
621	<	* threadRecordFailure) any AssertionError thrown, so that the current
622	<	* testcase will fail.
621	>	* threadRecordFailure) any AssertionFailedError thrown, so that
622	>	* the current testcase will fail.
623		*/
624		public void threadFail(String reason) {
625		try {
626		fail(reason);
627	<	} catch (Throwable t) {
627	>	} catch (AssertionFailedError t) {
628		threadRecordFailure(t);
629	<	fail(reason);
629	>	throw t;
630		}
631		}
632
633		/**
634		* Just like assertTrue(b), but additionally recording (using
635	<	* threadRecordFailure) any AssertionError thrown, so that the current
636	<	* testcase will fail.
635	>	* threadRecordFailure) any AssertionFailedError thrown, so that
636	>	* the current testcase will fail.
637		*/
638		public void threadAssertTrue(boolean b) {
639		try {
640		assertTrue(b);
641	<	} catch (AssertionError t) {
641	>	} catch (AssertionFailedError t) {
642		threadRecordFailure(t);
643		throw t;
644		}
#	Line 285 | Line 646 | public class JSR166TestCase extends Test
646
647		/**
648		* Just like assertFalse(b), but additionally recording (using
649	<	* threadRecordFailure) any AssertionError thrown, so that the
650	<	* current testcase will fail.
649	>	* threadRecordFailure) any AssertionFailedError thrown, so that
650	>	* the current testcase will fail.
651		*/
652		public void threadAssertFalse(boolean b) {
653		try {
654		assertFalse(b);
655	<	} catch (AssertionError t) {
655	>	} catch (AssertionFailedError t) {
656		threadRecordFailure(t);
657		throw t;
658		}
#	Line 299 | Line 660 | public class JSR166TestCase extends Test
660
661		/**
662		* Just like assertNull(x), but additionally recording (using
663	<	* threadRecordFailure) any AssertionError thrown, so that the
664	<	* current testcase will fail.
663	>	* threadRecordFailure) any AssertionFailedError thrown, so that
664	>	* the current testcase will fail.
665		*/
666		public void threadAssertNull(Object x) {
667		try {
668		assertNull(x);
669	<	} catch (AssertionError t) {
669	>	} catch (AssertionFailedError t) {
670		threadRecordFailure(t);
671		throw t;
672		}
#	Line 313 | Line 674 | public class JSR166TestCase extends Test
674
675		/**
676		* Just like assertEquals(x, y), but additionally recording (using
677	<	* threadRecordFailure) any AssertionError thrown, so that the
678	<	* current testcase will fail.
677	>	* threadRecordFailure) any AssertionFailedError thrown, so that
678	>	* the current testcase will fail.
679		*/
680		public void threadAssertEquals(long x, long y) {
681		try {
682		assertEquals(x, y);
683	<	} catch (AssertionError t) {
683	>	} catch (AssertionFailedError t) {
684		threadRecordFailure(t);
685		throw t;
686		}
#	Line 327 | Line 688 | public class JSR166TestCase extends Test
688
689		/**
690		* Just like assertEquals(x, y), but additionally recording (using
691	<	* threadRecordFailure) any AssertionError thrown, so that the
692	<	* current testcase will fail.
691	>	* threadRecordFailure) any AssertionFailedError thrown, so that
692	>	* the current testcase will fail.
693		*/
694		public void threadAssertEquals(Object x, Object y) {
695		try {
696		assertEquals(x, y);
697	<	} catch (AssertionError t) {
698	<	threadRecordFailure(t);
699	<	throw t;
697	>	} catch (AssertionFailedError fail) {
698	>	threadRecordFailure(fail);
699	>	throw fail;
700	>	} catch (Throwable fail) {
701	>	threadUnexpectedException(fail);
702		}
703		}
704
705		/**
706		* Just like assertSame(x, y), but additionally recording (using
707	<	* threadRecordFailure) any AssertionError thrown, so that the
708	<	* current testcase will fail.
707	>	* threadRecordFailure) any AssertionFailedError thrown, so that
708	>	* the current testcase will fail.
709		*/
710		public void threadAssertSame(Object x, Object y) {
711		try {
712		assertSame(x, y);
713	<	} catch (AssertionError t) {
714	<	threadRecordFailure(t);
715	<	throw t;
713	>	} catch (AssertionFailedError fail) {
714	>	threadRecordFailure(fail);
715	>	throw fail;
716		}
717		}
718
#	Line 368 | Line 731 | public class JSR166TestCase extends Test
731		}
732
733		/**
734	<	* Calls threadFail with message "Unexpected exception" + ex.
734	>	* Records the given exception using {@link #threadRecordFailure},
735	>	* then rethrows the exception, wrapping it in an
736	>	* AssertionFailedError if necessary.
737		*/
738		public void threadUnexpectedException(Throwable t) {
739		threadRecordFailure(t);
740		t.printStackTrace();
376	–	// Rethrow, wrapping in an AssertionError if necessary
741		if (t instanceof RuntimeException)
742		throw (RuntimeException) t;
743		else if (t instanceof Error)
744		throw (Error) t;
745		else {
746	<	AssertionError ae = new AssertionError("unexpected exception: " + t);
747	<	t.initCause(t);
748	<	throw ae;
746	>	AssertionFailedError afe =
747	>	new AssertionFailedError("unexpected exception: " + t);
748	>	afe.initCause(t);
749	>	throw afe;
750	>	}
751	>	}
752	>
753	>	/**
754	>	* Delays, via Thread.sleep, for the given millisecond delay, but
755	>	* if the sleep is shorter than specified, may re-sleep or yield
756	>	* until time elapses.  Ensures that the given time, as measured
757	>	* by System.nanoTime(), has elapsed.
758	>	*/
759	>	static void delay(long millis) throws InterruptedException {
760	>	long nanos = millis * (1000 * 1000);
761	>	final long wakeupTime = System.nanoTime() + nanos;
762	>	do {
763	>	if (millis > 0L)
764	>	Thread.sleep(millis);
765	>	else // too short to sleep
766	>	Thread.yield();
767	>	nanos = wakeupTime - System.nanoTime();
768	>	millis = nanos / (1000 * 1000);
769	>	} while (nanos >= 0L);
770	>	}
771	>
772	>	/**
773	>	* Allows use of try-with-resources with per-test thread pools.
774	>	*/
775	>	class PoolCleaner implements AutoCloseable {
776	>	private final ExecutorService pool;
777	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
778	>	public void close() { joinPool(pool); }
779	>	}
780	>
781	>	/**
782	>	* An extension of PoolCleaner that has an action to release the pool.
783	>	*/
784	>	class PoolCleanerWithReleaser extends PoolCleaner {
785	>	private final Runnable releaser;
786	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
787	>	super(pool);
788	>	this.releaser = releaser;
789		}
790	+	public void close() {
791	+	try {
792	+	releaser.run();
793	+	} finally {
794	+	super.close();
795	+	}
796	+	}
797	+	}
798	+
799	+	PoolCleaner cleaner(ExecutorService pool) {
800	+	return new PoolCleaner(pool);
801	+	}
802	+
803	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
804	+	return new PoolCleanerWithReleaser(pool, releaser);
805	+	}
806	+
807	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
808	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
809	+	}
810	+
811	+	Runnable releaser(final CountDownLatch latch) {
812	+	return new Runnable() { public void run() {
813	+	do { latch.countDown(); }
814	+	while (latch.getCount() > 0);
815	+	}};
816		}
817
818		/**
819		* Waits out termination of a thread pool or fails doing so.
820		*/
821	<	public void joinPool(ExecutorService exec) {
821	>	void joinPool(ExecutorService pool) {
822		try {
823	<	exec.shutdown();
824	<	assertTrue("ExecutorService did not terminate in a timely manner",
825	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
823	>	pool.shutdown();
824	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
825	>	try {
826	>	threadFail("ExecutorService " + pool +
827	>	" did not terminate in a timely manner");
828	>	} finally {
829	>	// last resort, for the benefit of subsequent tests
830	>	pool.shutdownNow();
831	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
832	>	}
833	>	}
834		} catch (SecurityException ok) {
835		// Allowed in case test doesn't have privs
836	<	} catch (InterruptedException ie) {
837	<	fail("Unexpected InterruptedException");
836	>	} catch (InterruptedException fail) {
837	>	threadFail("Unexpected InterruptedException");
838		}
839		}
840
841	+	/** Like Runnable, but with the freedom to throw anything */
842	+	interface Action { public void run() throws Throwable; }
843	+
844	+	/**
845	+	* Runs all the given actions in parallel, failing if any fail.
846	+	* Useful for running multiple variants of tests that are
847	+	* necessarily individually slow because they must block.
848	+	*/
849	+	void testInParallel(Action ... actions) {
850	+	ExecutorService pool = Executors.newCachedThreadPool();
851	+	try (PoolCleaner cleaner = cleaner(pool)) {
852	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
853	+	for (final Action action : actions)
854	+	futures.add(pool.submit(new CheckedRunnable() {
855	+	public void realRun() throws Throwable { action.run();}}));
856	+	for (Future<?> future : futures)
857	+	try {
858	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
859	+	} catch (ExecutionException ex) {
860	+	threadUnexpectedException(ex.getCause());
861	+	} catch (Exception ex) {
862	+	threadUnexpectedException(ex);
863	+	}
864	+	}
865	+	}
866	+
867	+	/**
868	+	* A debugging tool to print stack traces of most threads, as jstack does.
869	+	* Uninteresting threads are filtered out.
870	+	*/
871	+	static void dumpTestThreads() {
872	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
873	+	System.err.println("------ stacktrace dump start ------");
874	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
875	+	String name = info.getThreadName();
876	+	if ("Signal Dispatcher".equals(name))
877	+	continue;
878	+	if ("Reference Handler".equals(name)
879	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
880	+	continue;
881	+	if ("Finalizer".equals(name)
882	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
883	+	continue;
884	+	if ("checkForWedgedTest".equals(name))
885	+	continue;
886	+	System.err.print(info);
887	+	}
888	+	System.err.println("------ stacktrace dump end ------");
889	+	}
890	+
891	+	/**
892	+	* Checks that thread does not terminate within the default
893	+	* millisecond delay of {@code timeoutMillis()}.
894	+	*/
895	+	void assertThreadStaysAlive(Thread thread) {
896	+	assertThreadStaysAlive(thread, timeoutMillis());
897	+	}
898	+
899	+	/**
900	+	* Checks that thread does not terminate within the given millisecond delay.
901	+	*/
902	+	void assertThreadStaysAlive(Thread thread, long millis) {
903	+	try {
904	+	// No need to optimize the failing case via Thread.join.
905	+	delay(millis);
906	+	assertTrue(thread.isAlive());
907	+	} catch (InterruptedException fail) {
908	+	threadFail("Unexpected InterruptedException");
909	+	}
910	+	}
911	+
912	+	/**
913	+	* Checks that the threads do not terminate within the default
914	+	* millisecond delay of {@code timeoutMillis()}.
915	+	*/
916	+	void assertThreadsStayAlive(Thread... threads) {
917	+	assertThreadsStayAlive(timeoutMillis(), threads);
918	+	}
919	+
920	+	/**
921	+	* Checks that the threads do not terminate within the given millisecond delay.
922	+	*/
923	+	void assertThreadsStayAlive(long millis, Thread... threads) {
924	+	try {
925	+	// No need to optimize the failing case via Thread.join.
926	+	delay(millis);
927	+	for (Thread thread : threads)
928	+	assertTrue(thread.isAlive());
929	+	} catch (InterruptedException fail) {
930	+	threadFail("Unexpected InterruptedException");
931	+	}
932	+	}
933	+
934	+	/**
935	+	* Checks that future.get times out, with the default timeout of
936	+	* {@code timeoutMillis()}.
937	+	*/
938	+	void assertFutureTimesOut(Future future) {
939	+	assertFutureTimesOut(future, timeoutMillis());
940	+	}
941	+
942	+	/**
943	+	* Checks that future.get times out, with the given millisecond timeout.
944	+	*/
945	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
946	+	long startTime = System.nanoTime();
947	+	try {
948	+	future.get(timeoutMillis, MILLISECONDS);
949	+	shouldThrow();
950	+	} catch (TimeoutException success) {
951	+	} catch (Exception fail) {
952	+	threadUnexpectedException(fail);
953	+	} finally { future.cancel(true); }
954	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
955	+	}
956
957		/**
958		* Fails with message "should throw exception".
#	Line 416 | Line 969 | public class JSR166TestCase extends Test
969		}
970
971		/**
419	–	* Fails with message "Unexpected exception: " + ex.
420	–	*/
421	–	public void unexpectedException(Throwable ex) {
422	–	ex.printStackTrace();
423	–	fail("Unexpected exception: " + ex);
424	–	}
425	–
426	–
427	–	/**
972		* The number of elements to place in collections, arrays, etc.
973		*/
974		public static final int SIZE = 20;
#	Line 449 | Line 993 | public class JSR166TestCase extends Test
993		public static final Integer m6  = new Integer(-6);
994		public static final Integer m10 = new Integer(-10);
995
452	–
996		/**
997		* Runs Runnable r with a security policy that permits precisely
998		* the specified permissions.  If there is no current security
#	Line 461 | Line 1004 | public class JSR166TestCase extends Test
1004		SecurityManager sm = System.getSecurityManager();
1005		if (sm == null) {
1006		r.run();
1007	+	}
1008	+	runWithSecurityManagerWithPermissions(r, permissions);
1009	+	}
1010	+
1011	+	/**
1012	+	* Runs Runnable r with a security policy that permits precisely
1013	+	* the specified permissions.  If there is no current security
1014	+	* manager, a temporary one is set for the duration of the
1015	+	* Runnable.  We require that any security manager permit
1016	+	* getPolicy/setPolicy.
1017	+	*/
1018	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1019	+	Permission... permissions) {
1020	+	SecurityManager sm = System.getSecurityManager();
1021	+	if (sm == null) {
1022		Policy savedPolicy = Policy.getPolicy();
1023		try {
1024		Policy.setPolicy(permissivePolicy());
1025		System.setSecurityManager(new SecurityManager());
1026	<	runWithPermissions(r, permissions);
1026	>	runWithSecurityManagerWithPermissions(r, permissions);
1027		} finally {
1028		System.setSecurityManager(null);
1029		Policy.setPolicy(savedPolicy);
#	Line 513 | Line 1071 | public class JSR166TestCase extends Test
1071		return perms.implies(p);
1072		}
1073		public void refresh() {}
1074	+	public String toString() {
1075	+	List<Permission> ps = new ArrayList<Permission>();
1076	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1077	+	ps.add(e.nextElement());
1078	+	return "AdjustablePolicy with permissions " + ps;
1079	+	}
1080		}
1081
1082		/**
#	Line 535 | Line 1099 | public class JSR166TestCase extends Test
1099		}
1100
1101		/**
1102	<	* Sleep until the timeout has elapsed, or interrupted.
1103	<	* Does <em>NOT</em> throw InterruptedException.
1102	>	* Sleeps until the given time has elapsed.
1103	>	* Throws AssertionFailedError if interrupted.
1104	>	*/
1105	>	void sleep(long millis) {
1106	>	try {
1107	>	delay(millis);
1108	>	} catch (InterruptedException fail) {
1109	>	AssertionFailedError afe =
1110	>	new AssertionFailedError("Unexpected InterruptedException");
1111	>	afe.initCause(fail);
1112	>	throw afe;
1113	>	}
1114	>	}
1115	>
1116	>	/**
1117	>	* Spin-waits up to the specified number of milliseconds for the given
1118	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1119	>	*/
1120	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1121	>	long startTime = System.nanoTime();
1122	>	for (;;) {
1123	>	Thread.State s = thread.getState();
1124	>	if (s == Thread.State.BLOCKED ||
1125	>	s == Thread.State.WAITING ||
1126	>	s == Thread.State.TIMED_WAITING)
1127	>	return;
1128	>	else if (s == Thread.State.TERMINATED)
1129	>	fail("Unexpected thread termination");
1130	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1131	>	threadAssertTrue(thread.isAlive());
1132	>	return;
1133	>	}
1134	>	Thread.yield();
1135	>	}
1136	>	}
1137	>
1138	>	/**
1139	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1140	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1141	>	*/
1142	>	void waitForThreadToEnterWaitState(Thread thread) {
1143	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1144	>	}
1145	>
1146	>	/**
1147	>	* Returns the number of milliseconds since time given by
1148	>	* startNanoTime, which must have been previously returned from a
1149	>	* call to {@link System#nanoTime()}.
1150		*/
1151	<	void sleepTillInterrupted(long timeoutMillis) {
1151	>	static long millisElapsedSince(long startNanoTime) {
1152	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1153	>	}
1154	>
1155	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1156	>	//         long startTime = System.nanoTime();
1157	>	//         try {
1158	>	//             r.run();
1159	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1160	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1161	>	//             throw new AssertionFailedError("did not return promptly");
1162	>	//     }
1163	>
1164	>	//     void assertTerminatesPromptly(Runnable r) {
1165	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1166	>	//     }
1167	>
1168	>	/**
1169	>	* Checks that timed f.get() returns the expected value, and does not
1170	>	* wait for the timeout to elapse before returning.
1171	>	*/
1172	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1173	>	long startTime = System.nanoTime();
1174		try {
1175	<	Thread.sleep(timeoutMillis);
1176	<	} catch (InterruptedException wakeup) {}
1175	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1176	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1177	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1178	>	throw new AssertionFailedError("timed get did not return promptly");
1179	>	}
1180	>
1181	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1182	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1183		}
1184
1185		/**
1186	<	* Returns a new started Thread running the given runnable.
1186	>	* Returns a new started daemon Thread running the given runnable.
1187		*/
1188		Thread newStartedThread(Runnable runnable) {
1189		Thread t = new Thread(runnable);
1190	+	t.setDaemon(true);
1191		t.start();
1192		return t;
1193		}
1194
1195	+	/**
1196	+	* Waits for the specified time (in milliseconds) for the thread
1197	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1198	+	* the thread (in the hope that it may terminate later) and fails.
1199	+	*/
1200	+	void awaitTermination(Thread t, long timeoutMillis) {
1201	+	try {
1202	+	t.join(timeoutMillis);
1203	+	} catch (InterruptedException fail) {
1204	+	threadUnexpectedException(fail);
1205	+	} finally {
1206	+	if (t.getState() != Thread.State.TERMINATED) {
1207	+	t.interrupt();
1208	+	threadFail("Test timed out");
1209	+	}
1210	+	}
1211	+	}
1212	+
1213	+	/**
1214	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1215	+	* terminate (using {@link Thread#join(long)}), else interrupts
1216	+	* the thread (in the hope that it may terminate later) and fails.
1217	+	*/
1218	+	void awaitTermination(Thread t) {
1219	+	awaitTermination(t, LONG_DELAY_MS);
1220	+	}
1221	+
1222		// Some convenient Runnable classes
1223
1224		public abstract class CheckedRunnable implements Runnable {
#	Line 561 | Line 1227 | public class JSR166TestCase extends Test
1227		public final void run() {
1228		try {
1229		realRun();
1230	<	} catch (Throwable t) {
1231	<	threadUnexpectedException(t);
1230	>	} catch (Throwable fail) {
1231	>	threadUnexpectedException(fail);
1232		}
1233		}
1234		}
#	Line 615 | Line 1281 | public class JSR166TestCase extends Test
1281		realRun();
1282		threadShouldThrow("InterruptedException");
1283		} catch (InterruptedException success) {
1284	<	} catch (Throwable t) {
1285	<	threadUnexpectedException(t);
1284	>	threadAssertFalse(Thread.interrupted());
1285	>	} catch (Throwable fail) {
1286	>	threadUnexpectedException(fail);
1287		}
1288		}
1289		}
#	Line 627 | Line 1294 | public class JSR166TestCase extends Test
1294		public final T call() {
1295		try {
1296		return realCall();
1297	<	} catch (Throwable t) {
1298	<	threadUnexpectedException(t);
1297	>	} catch (Throwable fail) {
1298	>	threadUnexpectedException(fail);
1299		return null;
1300		}
1301		}
#	Line 644 | Line 1311 | public class JSR166TestCase extends Test
1311		threadShouldThrow("InterruptedException");
1312		return result;
1313		} catch (InterruptedException success) {
1314	<	} catch (Throwable t) {
1315	<	threadUnexpectedException(t);
1314	>	threadAssertFalse(Thread.interrupted());
1315	>	} catch (Throwable fail) {
1316	>	threadUnexpectedException(fail);
1317		}
1318		return null;
1319		}
#	Line 662 | Line 1330 | public class JSR166TestCase extends Test
1330		public static final String TEST_STRING = "a test string";
1331
1332		public static class StringTask implements Callable<String> {
1333	<	public String call() { return TEST_STRING; }
1333	>	final String value;
1334	>	public StringTask() { this(TEST_STRING); }
1335	>	public StringTask(String value) { this.value = value; }
1336	>	public String call() { return value; }
1337		}
1338
1339		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1340		return new CheckedCallable<String>() {
1341	<	public String realCall() {
1341	>	protected String realCall() {
1342		try {
1343		latch.await();
1344		} catch (InterruptedException quittingTime) {}
#	Line 675 | Line 1346 | public class JSR166TestCase extends Test
1346		}};
1347		}
1348
1349	+	public Runnable countDowner(final CountDownLatch latch) {
1350	+	return new CheckedRunnable() {
1351	+	public void realRun() throws InterruptedException {
1352	+	latch.countDown();
1353	+	}};
1354	+	}
1355	+
1356	+	class LatchAwaiter extends CheckedRunnable {
1357	+	static final int NEW = 0;
1358	+	static final int RUNNING = 1;
1359	+	static final int DONE = 2;
1360	+	final CountDownLatch latch;
1361	+	int state = NEW;
1362	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1363	+	public void realRun() throws InterruptedException {
1364	+	state = 1;
1365	+	await(latch);
1366	+	state = 2;
1367	+	}
1368	+	}
1369	+
1370	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1371	+	return new LatchAwaiter(latch);
1372	+	}
1373	+
1374	+	public void await(CountDownLatch latch) {
1375	+	try {
1376	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1377	+	} catch (Throwable fail) {
1378	+	threadUnexpectedException(fail);
1379	+	}
1380	+	}
1381	+
1382	+	public void await(Semaphore semaphore) {
1383	+	try {
1384	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1385	+	} catch (Throwable fail) {
1386	+	threadUnexpectedException(fail);
1387	+	}
1388	+	}
1389	+
1390	+	//     /**
1391	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1392	+	//      */
1393	+	//     public void await(AtomicBoolean flag) {
1394	+	//         await(flag, LONG_DELAY_MS);
1395	+	//     }
1396	+
1397	+	//     /**
1398	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1399	+	//      */
1400	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1401	+	//         long startTime = System.nanoTime();
1402	+	//         while (!flag.get()) {
1403	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1404	+	//                 throw new AssertionFailedError("timed out");
1405	+	//             Thread.yield();
1406	+	//         }
1407	+	//     }
1408	+
1409		public static class NPETask implements Callable<String> {
1410		public String call() { throw new NullPointerException(); }
1411		}
#	Line 685 | Line 1416 | public class JSR166TestCase extends Test
1416
1417		public class ShortRunnable extends CheckedRunnable {
1418		protected void realRun() throws Throwable {
1419	<	Thread.sleep(SHORT_DELAY_MS);
1419	>	delay(SHORT_DELAY_MS);
1420		}
1421		}
1422
1423		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1424		protected void realRun() throws InterruptedException {
1425	<	Thread.sleep(SHORT_DELAY_MS);
1425	>	delay(SHORT_DELAY_MS);
1426		}
1427		}
1428
1429		public class SmallRunnable extends CheckedRunnable {
1430		protected void realRun() throws Throwable {
1431	<	Thread.sleep(SMALL_DELAY_MS);
1431	>	delay(SMALL_DELAY_MS);
1432		}
1433		}
1434
1435		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1436		protected void realRun() {
1437		try {
1438	<	Thread.sleep(SMALL_DELAY_MS);
1438	>	delay(SMALL_DELAY_MS);
1439		} catch (InterruptedException ok) {}
1440		}
1441		}
1442
1443		public class SmallCallable extends CheckedCallable {
1444		protected Object realCall() throws InterruptedException {
1445	<	Thread.sleep(SMALL_DELAY_MS);
1445	>	delay(SMALL_DELAY_MS);
1446		return Boolean.TRUE;
1447		}
1448		}
1449
719	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
720	–	protected void realRun() throws InterruptedException {
721	–	Thread.sleep(SMALL_DELAY_MS);
722	–	}
723	–	}
724	–
1450		public class MediumRunnable extends CheckedRunnable {
1451		protected void realRun() throws Throwable {
1452	<	Thread.sleep(MEDIUM_DELAY_MS);
1452	>	delay(MEDIUM_DELAY_MS);
1453		}
1454		}
1455
1456		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1457		protected void realRun() throws InterruptedException {
1458	<	Thread.sleep(MEDIUM_DELAY_MS);
1458	>	delay(MEDIUM_DELAY_MS);
1459		}
1460		}
1461
1462	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1463	+	return new CheckedRunnable() {
1464	+	protected void realRun() {
1465	+	try {
1466	+	delay(timeoutMillis);
1467	+	} catch (InterruptedException ok) {}
1468	+	}};
1469	+	}
1470	+
1471		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1472		protected void realRun() {
1473		try {
1474	<	Thread.sleep(MEDIUM_DELAY_MS);
1474	>	delay(MEDIUM_DELAY_MS);
1475		} catch (InterruptedException ok) {}
1476		}
1477		}
#	Line 745 | Line 1479 | public class JSR166TestCase extends Test
1479		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1480		protected void realRun() {
1481		try {
1482	<	Thread.sleep(LONG_DELAY_MS);
1482	>	delay(LONG_DELAY_MS);
1483		} catch (InterruptedException ok) {}
1484		}
1485		}
#	Line 759 | Line 1493 | public class JSR166TestCase extends Test
1493		}
1494		}
1495
1496	+	public interface TrackedRunnable extends Runnable {
1497	+	boolean isDone();
1498	+	}
1499	+
1500	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1501	+	return new TrackedRunnable() {
1502	+	private volatile boolean done = false;
1503	+	public boolean isDone() { return done; }
1504	+	public void run() {
1505	+	try {
1506	+	delay(timeoutMillis);
1507	+	done = true;
1508	+	} catch (InterruptedException ok) {}
1509	+	}
1510	+	};
1511	+	}
1512	+
1513		public static class TrackedShortRunnable implements Runnable {
1514		public volatile boolean done = false;
1515		public void run() {
1516		try {
1517	<	Thread.sleep(SMALL_DELAY_MS);
1517	>	delay(SHORT_DELAY_MS);
1518	>	done = true;
1519	>	} catch (InterruptedException ok) {}
1520	>	}
1521	>	}
1522	>
1523	>	public static class TrackedSmallRunnable implements Runnable {
1524	>	public volatile boolean done = false;
1525	>	public void run() {
1526	>	try {
1527	>	delay(SMALL_DELAY_MS);
1528		done = true;
1529		} catch (InterruptedException ok) {}
1530		}
#	Line 773 | Line 1534 | public class JSR166TestCase extends Test
1534		public volatile boolean done = false;
1535		public void run() {
1536		try {
1537	<	Thread.sleep(MEDIUM_DELAY_MS);
1537	>	delay(MEDIUM_DELAY_MS);
1538		done = true;
1539		} catch (InterruptedException ok) {}
1540		}
#	Line 783 | Line 1544 | public class JSR166TestCase extends Test
1544		public volatile boolean done = false;
1545		public void run() {
1546		try {
1547	<	Thread.sleep(LONG_DELAY_MS);
1547	>	delay(LONG_DELAY_MS);
1548		done = true;
1549		} catch (InterruptedException ok) {}
1550		}
#	Line 800 | Line 1561 | public class JSR166TestCase extends Test
1561		public volatile boolean done = false;
1562		public Object call() {
1563		try {
1564	<	Thread.sleep(SMALL_DELAY_MS);
1564	>	delay(SMALL_DELAY_MS);
1565		done = true;
1566		} catch (InterruptedException ok) {}
1567		return Boolean.TRUE;
#	Line 813 | Line 1574 | public class JSR166TestCase extends Test
1574		public abstract class CheckedRecursiveAction extends RecursiveAction {
1575		protected abstract void realCompute() throws Throwable;
1576
1577	<	public final void compute() {
1577	>	@Override protected final void compute() {
1578		try {
1579		realCompute();
1580	<	} catch (Throwable t) {
1581	<	threadUnexpectedException(t);
1580	>	} catch (Throwable fail) {
1581	>	threadUnexpectedException(fail);
1582		}
1583		}
1584		}
#	Line 828 | Line 1589 | public class JSR166TestCase extends Test
1589		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1590		protected abstract T realCompute() throws Throwable;
1591
1592	<	public final T compute() {
1592	>	@Override protected final T compute() {
1593		try {
1594		return realCompute();
1595	<	} catch (Throwable t) {
1596	<	threadUnexpectedException(t);
1595	>	} catch (Throwable fail) {
1596	>	threadUnexpectedException(fail);
1597		return null;
1598		}
1599		}
#	Line 846 | Line 1607 | public class JSR166TestCase extends Test
1607		ThreadPoolExecutor executor) {}
1608		}
1609
1610	+	/**
1611	+	* A CyclicBarrier that uses timed await and fails with
1612	+	* AssertionFailedErrors instead of throwing checked exceptions.
1613	+	*/
1614	+	public class CheckedBarrier extends CyclicBarrier {
1615	+	public CheckedBarrier(int parties) { super(parties); }
1616	+
1617	+	public int await() {
1618	+	try {
1619	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1620	+	} catch (TimeoutException timedOut) {
1621	+	throw new AssertionFailedError("timed out");
1622	+	} catch (Exception fail) {
1623	+	AssertionFailedError afe =
1624	+	new AssertionFailedError("Unexpected exception: " + fail);
1625	+	afe.initCause(fail);
1626	+	throw afe;
1627	+	}
1628	+	}
1629	+	}
1630	+
1631	+	void checkEmpty(BlockingQueue q) {
1632	+	try {
1633	+	assertTrue(q.isEmpty());
1634	+	assertEquals(0, q.size());
1635	+	assertNull(q.peek());
1636	+	assertNull(q.poll());
1637	+	assertNull(q.poll(0, MILLISECONDS));
1638	+	assertEquals(q.toString(), "[]");
1639	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1640	+	assertFalse(q.iterator().hasNext());
1641	+	try {
1642	+	q.element();
1643	+	shouldThrow();
1644	+	} catch (NoSuchElementException success) {}
1645	+	try {
1646	+	q.iterator().next();
1647	+	shouldThrow();
1648	+	} catch (NoSuchElementException success) {}
1649	+	try {
1650	+	q.remove();
1651	+	shouldThrow();
1652	+	} catch (NoSuchElementException success) {}
1653	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1654	+	}
1655	+
1656	+	void assertSerialEquals(Object x, Object y) {
1657	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1658	+	}
1659	+
1660	+	void assertNotSerialEquals(Object x, Object y) {
1661	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1662	+	}
1663	+
1664	+	byte[] serialBytes(Object o) {
1665	+	try {
1666	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1667	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1668	+	oos.writeObject(o);
1669	+	oos.flush();
1670	+	oos.close();
1671	+	return bos.toByteArray();
1672	+	} catch (Throwable fail) {
1673	+	threadUnexpectedException(fail);
1674	+	return new byte[0];
1675	+	}
1676	+	}
1677	+
1678	+	@SuppressWarnings("unchecked")
1679	+	<T> T serialClone(T o) {
1680	+	try {
1681	+	ObjectInputStream ois = new ObjectInputStream
1682	+	(new ByteArrayInputStream(serialBytes(o)));
1683	+	T clone = (T) ois.readObject();
1684	+	assertSame(o.getClass(), clone.getClass());
1685	+	return clone;
1686	+	} catch (Throwable fail) {
1687	+	threadUnexpectedException(fail);
1688	+	return null;
1689	+	}
1690	+	}
1691	+
1692	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1693	+	Runnable... throwingActions) {
1694	+	for (Runnable throwingAction : throwingActions) {
1695	+	boolean threw = false;
1696	+	try { throwingAction.run(); }
1697	+	catch (Throwable t) {
1698	+	threw = true;
1699	+	if (!expectedExceptionClass.isInstance(t)) {
1700	+	AssertionFailedError afe =
1701	+	new AssertionFailedError
1702	+	("Expected " + expectedExceptionClass.getName() +
1703	+	", got " + t.getClass().getName());
1704	+	afe.initCause(t);
1705	+	threadUnexpectedException(afe);
1706	+	}
1707	+	}
1708	+	if (!threw)
1709	+	shouldThrow(expectedExceptionClass.getName());
1710	+	}
1711	+	}
1712	+
1713	+	public void assertIteratorExhausted(Iterator<?> it) {
1714	+	try {
1715	+	it.next();
1716	+	shouldThrow();
1717	+	} catch (NoSuchElementException success) {}
1718	+	assertFalse(it.hasNext());
1719	+	}
1720		}

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