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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.1 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.166 by jsr166, Mon Oct 5 21:39:39 2015 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
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/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.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<
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;
26	>	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 and
65	<	* utility methods, as well as a simple framework for helping to make
66	<	* sure that assertions failing in generated threads cause the
67	<	* associated test that generated them to itself fail (which JUnit doe
68	<	* not otherwise arrange).  The rules for creating such tests are:
64	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
65	>	* utility methods and classes, as well as a simple framework for
66	>	* helping to make sure that assertions failing in generated threads
67	>	* cause the associated test that generated them to itself fail (which
68	>	* JUnit does not otherwise arrange).  The rules for creating such
69	>	* tests are:
70		*
71		* <ol>
72		*
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	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
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
82	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
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 {@link
87	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
88	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
89	<	* discriminatable from zero time, and always allows enough time for
90	<	* the small amounts of computation (creating a thread, calling a few
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},
88	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
89	>	* discriminable from zero time, and always allows enough time for the
90	>	* small amounts of computation (creating a thread, calling a few
91		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
92		* is always discriminable as larger than SHORT and smaller than
93		* MEDIUM.  And so on. These constants are set to conservative values,
94	<	* (100, 500, 1000, 5000 MS) but even so, if there is ever any doubt,
95	<	* they can all be increased in one spot to rerun tests on slower
96	<	* platforms</li>
97	<	*
98	<	* <li> All threads generated must be joined inside each test case
99	<	* method (or <tt>fail</tt> to do so) before returning from the
100	<	* method. The {@link joinPool} method can be used to do this when
51	<	* using Executors.</li>
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.
96	>	*
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.
101		*
102		* </ol>
103	+	*
104	+	* <p><b>Other notes</b>
105	+	* <ul>
106	+	*
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.
114	+	*
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.
119	+	*
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.
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.
130	+	*
131	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
132	+	* runs all JSR166 unit tests.
133	+	*
134	+	* </ul>
135		*/
136		public class JSR166TestCase extends TestCase {
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	+	dumpTestThreads();
204	+	// one stack dump is probably enough; more would be spam
205	+	break;
206	+	}
207	+	lastTestCase = currentTestCase;
208	+	}}};
209	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
210	+	thread.setDaemon(true);
211	+	thread.start();
212	+	}
213	+
214	+	public void runBare() throws Throwable {
215	+	currentTestCase = this;
216	+	if (methodFilter == null
217	+	|| methodFilter.matcher(toString()).find())
218	+	super.runBare();
219	+	}
220	+
221	+	protected void runTest() throws Throwable {
222	+	for (int i = 0; i < runsPerTest; i++) {
223	+	if (profileTests)
224	+	runTestProfiled();
225	+	else
226	+	super.runTest();
227	+	}
228	+	}
229	+
230	+	protected void runTestProfiled() throws Throwable {
231	+	for (int i = 0; i < 2; i++) {
232	+	long startTime = System.nanoTime();
233	+	super.runTest();
234	+	long elapsedMillis = millisElapsedSince(startTime);
235	+	if (elapsedMillis < profileThreshold)
236	+	break;
237	+	// Never report first run of any test; treat it as a
238	+	// warmup run, notably to trigger all needed classloading,
239	+	if (i > 0)
240	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
241	+	}
242	+	}
243
244		/**
245	<	* Flag set true if any threadAssert methods fail
245	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
246		*/
247	<	protected volatile boolean threadFailed;
247	>	public static void main(String[] args) {
248	>	main(suite(), args);
249	>	}
250
251		/**
252	<	* Initialize test to indicat that no thread assertions have failed
252	>	* Runs all unit tests in the given test suite.
253	>	* Actual behavior influenced by jsr166.* system properties.
254		*/
255	<	public void setUp() {
256	<	threadFailed = false;
255	>	static void main(Test suite, String[] args) {
256	>	if (useSecurityManager) {
257	>	System.err.println("Setting a permissive security manager");
258	>	Policy.setPolicy(permissivePolicy());
259	>	System.setSecurityManager(new SecurityManager());
260	>	}
261	>	for (int i = 0; i < suiteRuns; i++) {
262	>	TestResult result = junit.textui.TestRunner.run(suite);
263	>	if (!result.wasSuccessful())
264	>	System.exit(1);
265	>	System.gc();
266	>	System.runFinalization();
267	>	}
268	>	}
269	>
270	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
271	>	TestSuite suite = new TestSuite();
272	>	for (Object suiteOrClass : suiteOrClasses) {
273	>	if (suiteOrClass instanceof TestSuite)
274	>	suite.addTest((TestSuite) suiteOrClass);
275	>	else if (suiteOrClass instanceof Class)
276	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
277	>	else
278	>	throw new ClassCastException("not a test suite or class");
279	>	}
280	>	return suite;
281	>	}
282	>
283	>	public static void addNamedTestClasses(TestSuite suite,
284	>	String... testClassNames) {
285	>	for (String testClassName : testClassNames) {
286	>	try {
287	>	Class<?> testClass = Class.forName(testClassName);
288	>	Method m = testClass.getDeclaredMethod("suite",
289	>	new Class<?>[0]);
290	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
291	>	} catch (Exception e) {
292	>	throw new Error("Missing test class", e);
293	>	}
294	>	}
295	>	}
296	>
297	>	public static final double JAVA_CLASS_VERSION;
298	>	public static final String JAVA_SPECIFICATION_VERSION;
299	>	static {
300	>	try {
301	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
302	>	new java.security.PrivilegedAction<Double>() {
303	>	public Double run() {
304	>	return Double.valueOf(System.getProperty("java.class.version"));}});
305	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
306	>	new java.security.PrivilegedAction<String>() {
307	>	public String run() {
308	>	return System.getProperty("java.specification.version");}});
309	>	} catch (Throwable t) {
310	>	throw new Error(t);
311	>	}
312	>	}
313	>
314	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
315	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
316	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
317	>	public static boolean atLeastJava9() {
318	>	return JAVA_CLASS_VERSION >= 53.0
319	>	// As of 2015-09, java9 still uses 52.0 class file version
320	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
321	>	}
322	>	public static boolean atLeastJava10() {
323	>	return JAVA_CLASS_VERSION >= 54.0
324	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
325	>	}
326	>
327	>	/**
328	>	* Collects all JSR166 unit tests as one suite.
329	>	*/
330	>	public static Test suite() {
331	>	// Java7+ test classes
332	>	TestSuite suite = newTestSuite(
333	>	ForkJoinPoolTest.suite(),
334	>	ForkJoinTaskTest.suite(),
335	>	RecursiveActionTest.suite(),
336	>	RecursiveTaskTest.suite(),
337	>	LinkedTransferQueueTest.suite(),
338	>	PhaserTest.suite(),
339	>	ThreadLocalRandomTest.suite(),
340	>	AbstractExecutorServiceTest.suite(),
341	>	AbstractQueueTest.suite(),
342	>	AbstractQueuedSynchronizerTest.suite(),
343	>	AbstractQueuedLongSynchronizerTest.suite(),
344	>	ArrayBlockingQueueTest.suite(),
345	>	ArrayDequeTest.suite(),
346	>	AtomicBooleanTest.suite(),
347	>	AtomicIntegerArrayTest.suite(),
348	>	AtomicIntegerFieldUpdaterTest.suite(),
349	>	AtomicIntegerTest.suite(),
350	>	AtomicLongArrayTest.suite(),
351	>	AtomicLongFieldUpdaterTest.suite(),
352	>	AtomicLongTest.suite(),
353	>	AtomicMarkableReferenceTest.suite(),
354	>	AtomicReferenceArrayTest.suite(),
355	>	AtomicReferenceFieldUpdaterTest.suite(),
356	>	AtomicReferenceTest.suite(),
357	>	AtomicStampedReferenceTest.suite(),
358	>	ConcurrentHashMapTest.suite(),
359	>	ConcurrentLinkedDequeTest.suite(),
360	>	ConcurrentLinkedQueueTest.suite(),
361	>	ConcurrentSkipListMapTest.suite(),
362	>	ConcurrentSkipListSubMapTest.suite(),
363	>	ConcurrentSkipListSetTest.suite(),
364	>	ConcurrentSkipListSubSetTest.suite(),
365	>	CopyOnWriteArrayListTest.suite(),
366	>	CopyOnWriteArraySetTest.suite(),
367	>	CountDownLatchTest.suite(),
368	>	CyclicBarrierTest.suite(),
369	>	DelayQueueTest.suite(),
370	>	EntryTest.suite(),
371	>	ExchangerTest.suite(),
372	>	ExecutorsTest.suite(),
373	>	ExecutorCompletionServiceTest.suite(),
374	>	FutureTaskTest.suite(),
375	>	LinkedBlockingDequeTest.suite(),
376	>	LinkedBlockingQueueTest.suite(),
377	>	LinkedListTest.suite(),
378	>	LockSupportTest.suite(),
379	>	PriorityBlockingQueueTest.suite(),
380	>	PriorityQueueTest.suite(),
381	>	ReentrantLockTest.suite(),
382	>	ReentrantReadWriteLockTest.suite(),
383	>	ScheduledExecutorTest.suite(),
384	>	ScheduledExecutorSubclassTest.suite(),
385	>	SemaphoreTest.suite(),
386	>	SynchronousQueueTest.suite(),
387	>	SystemTest.suite(),
388	>	ThreadLocalTest.suite(),
389	>	ThreadPoolExecutorTest.suite(),
390	>	ThreadPoolExecutorSubclassTest.suite(),
391	>	ThreadTest.suite(),
392	>	TimeUnitTest.suite(),
393	>	TreeMapTest.suite(),
394	>	TreeSetTest.suite(),
395	>	TreeSubMapTest.suite(),
396	>	TreeSubSetTest.suite());
397	>
398	>	// Java8+ test classes
399	>	if (atLeastJava8()) {
400	>	String[] java8TestClassNames = {
401	>	"Atomic8Test",
402	>	"CompletableFutureTest",
403	>	"ConcurrentHashMap8Test",
404	>	"CountedCompleterTest",
405	>	"DoubleAccumulatorTest",
406	>	"DoubleAdderTest",
407	>	"ForkJoinPool8Test",
408	>	"ForkJoinTask8Test",
409	>	"LongAccumulatorTest",
410	>	"LongAdderTest",
411	>	"SplittableRandomTest",
412	>	"StampedLockTest",
413	>	"SubmissionPublisherTest",
414	>	"ThreadLocalRandom8Test",
415	>	};
416	>	addNamedTestClasses(suite, java8TestClassNames);
417	>	}
418	>
419	>	// Java9+ test classes
420	>	if (atLeastJava9()) {
421	>	String[] java9TestClassNames = {
422	>	// Currently empty, but expecting varhandle tests
423	>	};
424	>	addNamedTestClasses(suite, java9TestClassNames);
425	>	}
426	>
427	>	return suite;
428	>	}
429	>
430	>	/** Returns list of junit-style test method names in given class. */
431	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
432	>	Method[] methods = testClass.getDeclaredMethods();
433	>	ArrayList<String> names = new ArrayList<String>(methods.length);
434	>	for (Method method : methods) {
435	>	if (method.getName().startsWith("test")
436	>	&& Modifier.isPublic(method.getModifiers())
437	>	// method.getParameterCount() requires jdk8+
438	>	&& method.getParameterTypes().length == 0) {
439	>	names.add(method.getName());
440	>	}
441	>	}
442	>	return names;
443	>	}
444	>
445	>	/**
446	>	* Returns junit-style testSuite for the given test class, but
447	>	* parameterized by passing extra data to each test.
448	>	*/
449	>	public static <ExtraData> Test parameterizedTestSuite
450	>	(Class<? extends JSR166TestCase> testClass,
451	>	Class<ExtraData> dataClass,
452	>	ExtraData data) {
453	>	try {
454	>	TestSuite suite = new TestSuite();
455	>	Constructor c =
456	>	testClass.getDeclaredConstructor(dataClass, String.class);
457	>	for (String methodName : testMethodNames(testClass))
458	>	suite.addTest((Test) c.newInstance(data, methodName));
459	>	return suite;
460	>	} catch (Exception e) {
461	>	throw new Error(e);
462	>	}
463	>	}
464	>
465	>	/**
466	>	* Returns junit-style testSuite for the jdk8 extension of the
467	>	* given test class, but parameterized by passing extra data to
468	>	* each test.  Uses reflection to allow compilation in jdk7.
469	>	*/
470	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
471	>	(Class<? extends JSR166TestCase> testClass,
472	>	Class<ExtraData> dataClass,
473	>	ExtraData data) {
474	>	if (atLeastJava8()) {
475	>	String name = testClass.getName();
476	>	String name8 = name.replaceAll("Test$", "8Test");
477	>	if (name.equals(name8)) throw new Error(name);
478	>	try {
479	>	return (Test)
480	>	Class.forName(name8)
481	>	.getMethod("testSuite", new Class[] { dataClass })
482	>	.invoke(null, data);
483	>	} catch (Exception e) {
484	>	throw new Error(e);
485	>	}
486	>	} else {
487	>	return new TestSuite();
488	>	}
489	>	}
490	>
491	>	// Delays for timing-dependent tests, in milliseconds.
492	>
493	>	public static long SHORT_DELAY_MS;
494	>	public static long SMALL_DELAY_MS;
495	>	public static long MEDIUM_DELAY_MS;
496	>	public static long LONG_DELAY_MS;
497	>
498	>	/**
499	>	* Returns the shortest timed delay. This could
500	>	* be reimplemented to use for example a Property.
501	>	*/
502	>	protected long getShortDelay() {
503	>	return 50;
504	>	}
505	>
506	>	/**
507	>	* Sets delays as multiples of SHORT_DELAY.
508	>	*/
509	>	protected void setDelays() {
510	>	SHORT_DELAY_MS = getShortDelay();
511	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
512	>	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
513	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
514	>	}
515	>
516	>	/**
517	>	* Returns a timeout in milliseconds to be used in tests that
518	>	* verify that operations block or time out.
519	>	*/
520	>	long timeoutMillis() {
521	>	return SHORT_DELAY_MS / 4;
522	>	}
523	>
524	>	/**
525	>	* Returns a new Date instance representing a time at least
526	>	* delayMillis milliseconds in the future.
527	>	*/
528	>	Date delayedDate(long delayMillis) {
529	>	// Add 1 because currentTimeMillis is known to round into the past.
530	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
531	>	}
532	>
533	>	/**
534	>	* The first exception encountered if any threadAssertXXX method fails.
535	>	*/
536	>	private final AtomicReference<Throwable> threadFailure
537	>	= new AtomicReference<Throwable>(null);
538	>
539	>	/**
540	>	* Records an exception so that it can be rethrown later in the test
541	>	* harness thread, triggering a test case failure.  Only the first
542	>	* failure is recorded; subsequent calls to this method from within
543	>	* the same test have no effect.
544	>	*/
545	>	public void threadRecordFailure(Throwable t) {
546	>	System.err.println(t);
547	>	dumpTestThreads();
548	>	threadFailure.compareAndSet(null, t);
549	>	}
550	>
551	>	public void setUp() {
552	>	setDelays();
553	>	}
554	>
555	>	void tearDownFail(String format, Object... args) {
556	>	String msg = toString() + ": " + String.format(format, args);
557	>	System.err.println(msg);
558	>	dumpTestThreads();
559	>	throw new AssertionFailedError(msg);
560	>	}
561	>
562	>	/**
563	>	* Extra checks that get done for all test cases.
564	>	*
565	>	* Triggers test case failure if any thread assertions have failed,
566	>	* by rethrowing, in the test harness thread, any exception recorded
567	>	* earlier by threadRecordFailure.
568	>	*
569	>	* Triggers test case failure if interrupt status is set in the main thread.
570	>	*/
571	>	public void tearDown() throws Exception {
572	>	Throwable t = threadFailure.getAndSet(null);
573	>	if (t != null) {
574	>	if (t instanceof Error)
575	>	throw (Error) t;
576	>	else if (t instanceof RuntimeException)
577	>	throw (RuntimeException) t;
578	>	else if (t instanceof Exception)
579	>	throw (Exception) t;
580	>	else {
581	>	AssertionFailedError afe =
582	>	new AssertionFailedError(t.toString());
583	>	afe.initCause(t);
584	>	throw afe;
585	>	}
586	>	}
587	>
588	>	if (Thread.interrupted())
589	>	tearDownFail("interrupt status set in main thread");
590	>
591	>	checkForkJoinPoolThreadLeaks();
592		}
593
594		/**
595	<	* Trigger test case failure if any thread assertions have failed
595	>	* Finds missing PoolCleaners
596		*/
597	<	public void tearDown() {
598	<	assertFalse(threadFailed);
597	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
598	>	Thread[] survivors = new Thread[7];
599	>	int count = Thread.enumerate(survivors);
600	>	for (int i = 0; i < count; i++) {
601	>	Thread thread = survivors[i];
602	>	String name = thread.getName();
603	>	if (name.startsWith("ForkJoinPool-")) {
604	>	// give thread some time to terminate
605	>	thread.join(LONG_DELAY_MS);
606	>	if (thread.isAlive())
607	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
608	>	thread);
609	>	}
610	>	}
611	>
612	>	if (!ForkJoinPool.commonPool()
613	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
614	>	tearDownFail("ForkJoin common pool thread stuck");
615		}
616
617	+	/**
618	+	* Just like fail(reason), but additionally recording (using
619	+	* threadRecordFailure) any AssertionFailedError thrown, so that
620	+	* the current testcase will fail.
621	+	*/
622		public void threadFail(String reason) {
623	<	threadFailed = true;
624	<	fail(reason);
623	>	try {
624	>	fail(reason);
625	>	} catch (AssertionFailedError t) {
626	>	threadRecordFailure(t);
627	>	throw t;
628	>	}
629		}
630
631	+	/**
632	+	* Just like assertTrue(b), but additionally recording (using
633	+	* threadRecordFailure) any AssertionFailedError thrown, so that
634	+	* the current testcase will fail.
635	+	*/
636		public void threadAssertTrue(boolean b) {
637	<	if (!b) {
83	<	threadFailed = true;
637	>	try {
638		assertTrue(b);
639	+	} catch (AssertionFailedError t) {
640	+	threadRecordFailure(t);
641	+	throw t;
642		}
643		}
644	+
645	+	/**
646	+	* Just like assertFalse(b), but additionally recording (using
647	+	* threadRecordFailure) any AssertionFailedError thrown, so that
648	+	* the current testcase will fail.
649	+	*/
650		public void threadAssertFalse(boolean b) {
651	<	if (b) {
89	<	threadFailed = true;
651	>	try {
652		assertFalse(b);
653	+	} catch (AssertionFailedError t) {
654	+	threadRecordFailure(t);
655	+	throw t;
656		}
657		}
658	+
659	+	/**
660	+	* Just like assertNull(x), but additionally recording (using
661	+	* threadRecordFailure) any AssertionFailedError thrown, so that
662	+	* the current testcase will fail.
663	+	*/
664		public void threadAssertNull(Object x) {
665	<	if (x != null) {
95	<	threadFailed = true;
665	>	try {
666		assertNull(x);
667	+	} catch (AssertionFailedError t) {
668	+	threadRecordFailure(t);
669	+	throw t;
670		}
671		}
672	+
673	+	/**
674	+	* Just like assertEquals(x, y), but additionally recording (using
675	+	* threadRecordFailure) any AssertionFailedError thrown, so that
676	+	* the current testcase will fail.
677	+	*/
678		public void threadAssertEquals(long x, long y) {
679	<	if (x != y) {
101	<	threadFailed = true;
679	>	try {
680		assertEquals(x, y);
681	+	} catch (AssertionFailedError t) {
682	+	threadRecordFailure(t);
683	+	throw t;
684		}
685		}
686	+
687	+	/**
688	+	* Just like assertEquals(x, y), but additionally recording (using
689	+	* threadRecordFailure) any AssertionFailedError thrown, so that
690	+	* the current testcase will fail.
691	+	*/
692		public void threadAssertEquals(Object x, Object y) {
693	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
693	>	try {
694		assertEquals(x, y);
695	+	} catch (AssertionFailedError fail) {
696	+	threadRecordFailure(fail);
697	+	throw fail;
698	+	} catch (Throwable fail) {
699	+	threadUnexpectedException(fail);
700		}
701		}
702
703		/**
704	<	* Wait out termination of a thread pool or fail doing so
704	>	* Just like assertSame(x, y), but additionally recording (using
705	>	* threadRecordFailure) any AssertionFailedError thrown, so that
706	>	* the current testcase will fail.
707		*/
708	<	public void joinPool(ExecutorService exec) {
708	>	public void threadAssertSame(Object x, Object y) {
709		try {
710	<	exec.shutdown();
711	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
712	<	} catch(InterruptedException ie) {
713	<	fail("unexpected exception");
710	>	assertSame(x, y);
711	>	} catch (AssertionFailedError fail) {
712	>	threadRecordFailure(fail);
713	>	throw fail;
714	>	}
715	>	}
716	>
717	>	/**
718	>	* Calls threadFail with message "should throw exception".
719	>	*/
720	>	public void threadShouldThrow() {
721	>	threadFail("should throw exception");
722	>	}
723	>
724	>	/**
725	>	* Calls threadFail with message "should throw" + exceptionName.
726	>	*/
727	>	public void threadShouldThrow(String exceptionName) {
728	>	threadFail("should throw " + exceptionName);
729	>	}
730	>
731	>	/**
732	>	* Records the given exception using {@link #threadRecordFailure},
733	>	* then rethrows the exception, wrapping it in an
734	>	* AssertionFailedError if necessary.
735	>	*/
736	>	public void threadUnexpectedException(Throwable t) {
737	>	threadRecordFailure(t);
738	>	t.printStackTrace();
739	>	if (t instanceof RuntimeException)
740	>	throw (RuntimeException) t;
741	>	else if (t instanceof Error)
742	>	throw (Error) t;
743	>	else {
744	>	AssertionFailedError afe =
745	>	new AssertionFailedError("unexpected exception: " + t);
746	>	afe.initCause(t);
747	>	throw afe;
748		}
749		}
750
751	<	public static final long SHORT_DELAY_MS =   100;
752	<	public static final long SMALL_DELAY_MS =   500;
753	<	public static final long MEDIUM_DELAY_MS = 1000;
754	<	public static final long LONG_DELAY_MS =   5000;
751	>	/**
752	>	* Delays, via Thread.sleep, for the given millisecond delay, but
753	>	* if the sleep is shorter than specified, may re-sleep or yield
754	>	* until time elapses.  Ensures that the given time, as measured
755	>	* by System.nanoTime(), has elapsed.
756	>	*/
757	>	static void delay(long millis) throws InterruptedException {
758	>	long nanos = millis * (1000 * 1000);
759	>	final long wakeupTime = System.nanoTime() + nanos;
760	>	do {
761	>	if (millis > 0L)
762	>	Thread.sleep(millis);
763	>	else // too short to sleep
764	>	Thread.yield();
765	>	nanos = wakeupTime - System.nanoTime();
766	>	millis = nanos / (1000 * 1000);
767	>	} while (nanos >= 0L);
768	>	}
769
770	+	/**
771	+	* Allows use of try-with-resources with per-test thread pools.
772	+	*/
773	+	class PoolCleaner implements AutoCloseable {
774	+	private final ExecutorService pool;
775	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
776	+	public void close() { joinPool(pool); }
777	+	}
778	+
779	+	/**
780	+	* An extension of PoolCleaner that has an action to release the pool.
781	+	*/
782	+	class PoolCleanerWithReleaser extends PoolCleaner {
783	+	private final Runnable releaser;
784	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
785	+	super(pool);
786	+	this.releaser = releaser;
787	+	}
788	+	public void close() {
789	+	try {
790	+	releaser.run();
791	+	} finally {
792	+	super.close();
793	+	}
794	+	}
795	+	}
796	+
797	+	PoolCleaner cleaner(ExecutorService pool) {
798	+	return new PoolCleaner(pool);
799	+	}
800	+
801	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
802	+	return new PoolCleanerWithReleaser(pool, releaser);
803	+	}
804	+
805	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
806	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
807	+	}
808	+
809	+	Runnable releaser(final CountDownLatch latch) {
810	+	return new Runnable() { public void run() {
811	+	do { latch.countDown(); }
812	+	while (latch.getCount() > 0);
813	+	}};
814	+	}
815	+
816	+	/**
817	+	* Waits out termination of a thread pool or fails doing so.
818	+	*/
819	+	void joinPool(ExecutorService pool) {
820	+	try {
821	+	pool.shutdown();
822	+	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
823	+	try {
824	+	threadFail("ExecutorService " + pool +
825	+	" did not terminate in a timely manner");
826	+	} finally {
827	+	// last resort, for the benefit of subsequent tests
828	+	pool.shutdownNow();
829	+	pool.awaitTermination(SMALL_DELAY_MS, MILLISECONDS);
830	+	}
831	+	}
832	+	} catch (SecurityException ok) {
833	+	// Allowed in case test doesn't have privs
834	+	} catch (InterruptedException fail) {
835	+	threadFail("Unexpected InterruptedException");
836	+	}
837	+	}
838	+
839	+	/** Like Runnable, but with the freedom to throw anything */
840	+	interface Action { public void run() throws Throwable; }
841	+
842	+	/**
843	+	* Runs all the given actions in parallel, failing if any fail.
844	+	* Useful for running multiple variants of tests that are
845	+	* necessarily individually slow because they must block.
846	+	*/
847	+	void testInParallel(Action ... actions) {
848	+	ExecutorService pool = Executors.newCachedThreadPool();
849	+	try (PoolCleaner cleaner = cleaner(pool)) {
850	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
851	+	for (final Action action : actions)
852	+	futures.add(pool.submit(new CheckedRunnable() {
853	+	public void realRun() throws Throwable { action.run();}}));
854	+	for (Future<?> future : futures)
855	+	try {
856	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
857	+	} catch (ExecutionException ex) {
858	+	threadUnexpectedException(ex.getCause());
859	+	} catch (Exception ex) {
860	+	threadUnexpectedException(ex);
861	+	}
862	+	}
863	+	}
864	+
865	+	/**
866	+	* A debugging tool to print stack traces of most threads, as jstack does.
867	+	* Uninteresting threads are filtered out.
868	+	*/
869	+	static void dumpTestThreads() {
870	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
871	+	System.err.println("------ stacktrace dump start ------");
872	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
873	+	String name = info.getThreadName();
874	+	if ("Signal Dispatcher".equals(name))
875	+	continue;
876	+	if ("Reference Handler".equals(name)
877	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
878	+	continue;
879	+	if ("Finalizer".equals(name)
880	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
881	+	continue;
882	+	if ("checkForWedgedTest".equals(name))
883	+	continue;
884	+	System.err.print(info);
885	+	}
886	+	System.err.println("------ stacktrace dump end ------");
887	+	}
888	+
889	+	/**
890	+	* Checks that thread does not terminate within the default
891	+	* millisecond delay of {@code timeoutMillis()}.
892	+	*/
893	+	void assertThreadStaysAlive(Thread thread) {
894	+	assertThreadStaysAlive(thread, timeoutMillis());
895	+	}
896	+
897	+	/**
898	+	* Checks that thread does not terminate within the given millisecond delay.
899	+	*/
900	+	void assertThreadStaysAlive(Thread thread, long millis) {
901	+	try {
902	+	// No need to optimize the failing case via Thread.join.
903	+	delay(millis);
904	+	assertTrue(thread.isAlive());
905	+	} catch (InterruptedException fail) {
906	+	threadFail("Unexpected InterruptedException");
907	+	}
908	+	}
909	+
910	+	/**
911	+	* Checks that the threads do not terminate within the default
912	+	* millisecond delay of {@code timeoutMillis()}.
913	+	*/
914	+	void assertThreadsStayAlive(Thread... threads) {
915	+	assertThreadsStayAlive(timeoutMillis(), threads);
916	+	}
917	+
918	+	/**
919	+	* Checks that the threads do not terminate within the given millisecond delay.
920	+	*/
921	+	void assertThreadsStayAlive(long millis, Thread... threads) {
922	+	try {
923	+	// No need to optimize the failing case via Thread.join.
924	+	delay(millis);
925	+	for (Thread thread : threads)
926	+	assertTrue(thread.isAlive());
927	+	} catch (InterruptedException fail) {
928	+	threadFail("Unexpected InterruptedException");
929	+	}
930	+	}
931	+
932	+	/**
933	+	* Checks that future.get times out, with the default timeout of
934	+	* {@code timeoutMillis()}.
935	+	*/
936	+	void assertFutureTimesOut(Future future) {
937	+	assertFutureTimesOut(future, timeoutMillis());
938	+	}
939	+
940	+	/**
941	+	* Checks that future.get times out, with the given millisecond timeout.
942	+	*/
943	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
944	+	long startTime = System.nanoTime();
945	+	try {
946	+	future.get(timeoutMillis, MILLISECONDS);
947	+	shouldThrow();
948	+	} catch (TimeoutException success) {
949	+	} catch (Exception fail) {
950	+	threadUnexpectedException(fail);
951	+	} finally { future.cancel(true); }
952	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
953	+	}
954	+
955	+	/**
956	+	* Fails with message "should throw exception".
957	+	*/
958	+	public void shouldThrow() {
959	+	fail("Should throw exception");
960	+	}
961	+
962	+	/**
963	+	* Fails with message "should throw " + exceptionName.
964	+	*/
965	+	public void shouldThrow(String exceptionName) {
966	+	fail("Should throw " + exceptionName);
967	+	}
968
969		/**
970		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 973 | public class JSR166TestCase extends Test
973
974		// Some convenient Integer constants
975
976	<	public static final Integer zero = new Integer(0);
977	<	public static final Integer one = new Integer(1);
978	<	public static final Integer two = new Integer(2);
979	<	public static final Integer three  = new Integer(3);
976	>	public static final Integer zero  = new Integer(0);
977	>	public static final Integer one   = new Integer(1);
978	>	public static final Integer two   = new Integer(2);
979	>	public static final Integer three = new Integer(3);
980		public static final Integer four  = new Integer(4);
981		public static final Integer five  = new Integer(5);
982	<	public static final Integer six = new Integer(6);
982	>	public static final Integer six   = new Integer(6);
983		public static final Integer seven = new Integer(7);
984		public static final Integer eight = new Integer(8);
985	<	public static final Integer nine = new Integer(9);
985	>	public static final Integer nine  = new Integer(9);
986		public static final Integer m1  = new Integer(-1);
987		public static final Integer m2  = new Integer(-2);
988		public static final Integer m3  = new Integer(-3);
989	<	public static final Integer m4 = new Integer(-4);
990	<	public static final Integer m5 = new Integer(-5);
989	>	public static final Integer m4  = new Integer(-4);
990	>	public static final Integer m5  = new Integer(-5);
991	>	public static final Integer m6  = new Integer(-6);
992		public static final Integer m10 = new Integer(-10);
993
994	+	/**
995	+	* Runs Runnable r with a security policy that permits precisely
996	+	* the specified permissions.  If there is no current security
997	+	* manager, the runnable is run twice, both with and without a
998	+	* security manager.  We require that any security manager permit
999	+	* getPolicy/setPolicy.
1000	+	*/
1001	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1002	+	SecurityManager sm = System.getSecurityManager();
1003	+	if (sm == null) {
1004	+	r.run();
1005	+	}
1006	+	runWithSecurityManagerWithPermissions(r, permissions);
1007	+	}
1008
1009	<	// Some convenient Runnable classes
1009	>	/**
1010	>	* Runs Runnable r with a security policy that permits precisely
1011	>	* the specified permissions.  If there is no current security
1012	>	* manager, a temporary one is set for the duration of the
1013	>	* Runnable.  We require that any security manager permit
1014	>	* getPolicy/setPolicy.
1015	>	*/
1016	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1017	>	Permission... permissions) {
1018	>	SecurityManager sm = System.getSecurityManager();
1019	>	if (sm == null) {
1020	>	Policy savedPolicy = Policy.getPolicy();
1021	>	try {
1022	>	Policy.setPolicy(permissivePolicy());
1023	>	System.setSecurityManager(new SecurityManager());
1024	>	runWithSecurityManagerWithPermissions(r, permissions);
1025	>	} finally {
1026	>	System.setSecurityManager(null);
1027	>	Policy.setPolicy(savedPolicy);
1028	>	}
1029	>	} else {
1030	>	Policy savedPolicy = Policy.getPolicy();
1031	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1032	>	Policy.setPolicy(policy);
1033
1034	<	public static class NoOpRunnable implements Runnable {
1035	<	public void run() {}
1034	>	try {
1035	>	r.run();
1036	>	} finally {
1037	>	policy.addPermission(new SecurityPermission("setPolicy"));
1038	>	Policy.setPolicy(savedPolicy);
1039	>	}
1040	>	}
1041		}
1042
1043	<	public static class NoOpCallable implements Callable {
1044	<	public Object call() { return Boolean.TRUE; }
1043	>	/**
1044	>	* Runs a runnable without any permissions.
1045	>	*/
1046	>	public void runWithoutPermissions(Runnable r) {
1047	>	runWithPermissions(r);
1048		}
1049
1050	<	public class ShortRunnable implements Runnable {
1051	<	public void run() {
1052	<	try {
1053	<	Thread.sleep(SHORT_DELAY_MS);
1050	>	/**
1051	>	* A security policy where new permissions can be dynamically added
1052	>	* or all cleared.
1053	>	*/
1054	>	public static class AdjustablePolicy extends java.security.Policy {
1055	>	Permissions perms = new Permissions();
1056	>	AdjustablePolicy(Permission... permissions) {
1057	>	for (Permission permission : permissions)
1058	>	perms.add(permission);
1059	>	}
1060	>	void addPermission(Permission perm) { perms.add(perm); }
1061	>	void clearPermissions() { perms = new Permissions(); }
1062	>	public PermissionCollection getPermissions(CodeSource cs) {
1063	>	return perms;
1064	>	}
1065	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1066	>	return perms;
1067	>	}
1068	>	public boolean implies(ProtectionDomain pd, Permission p) {
1069	>	return perms.implies(p);
1070	>	}
1071	>	public void refresh() {}
1072	>	public String toString() {
1073	>	List<Permission> ps = new ArrayList<Permission>();
1074	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1075	>	ps.add(e.nextElement());
1076	>	return "AdjustablePolicy with permissions " + ps;
1077	>	}
1078	>	}
1079	>
1080	>	/**
1081	>	* Returns a policy containing all the permissions we ever need.
1082	>	*/
1083	>	public static Policy permissivePolicy() {
1084	>	return new AdjustablePolicy
1085	>	// Permissions j.u.c. needs directly
1086	>	(new RuntimePermission("modifyThread"),
1087	>	new RuntimePermission("getClassLoader"),
1088	>	new RuntimePermission("setContextClassLoader"),
1089	>	// Permissions needed to change permissions!
1090	>	new SecurityPermission("getPolicy"),
1091	>	new SecurityPermission("setPolicy"),
1092	>	new RuntimePermission("setSecurityManager"),
1093	>	// Permissions needed by the junit test harness
1094	>	new RuntimePermission("accessDeclaredMembers"),
1095	>	new PropertyPermission("*", "read"),
1096	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1097	>	}
1098	>
1099	>	/**
1100	>	* Sleeps until the given time has elapsed.
1101	>	* Throws AssertionFailedError if interrupted.
1102	>	*/
1103	>	void sleep(long millis) {
1104	>	try {
1105	>	delay(millis);
1106	>	} catch (InterruptedException fail) {
1107	>	AssertionFailedError afe =
1108	>	new AssertionFailedError("Unexpected InterruptedException");
1109	>	afe.initCause(fail);
1110	>	throw afe;
1111	>	}
1112	>	}
1113	>
1114	>	/**
1115	>	* Spin-waits up to the specified number of milliseconds for the given
1116	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1117	>	*/
1118	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1119	>	long startTime = System.nanoTime();
1120	>	for (;;) {
1121	>	Thread.State s = thread.getState();
1122	>	if (s == Thread.State.BLOCKED ||
1123	>	s == Thread.State.WAITING ||
1124	>	s == Thread.State.TIMED_WAITING)
1125	>	return;
1126	>	else if (s == Thread.State.TERMINATED)
1127	>	fail("Unexpected thread termination");
1128	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1129	>	threadAssertTrue(thread.isAlive());
1130	>	return;
1131		}
1132	<	catch(Exception e) {
1133	<	threadFail("unexpectedException");
1132	>	Thread.yield();
1133	>	}
1134	>	}
1135	>
1136	>	/**
1137	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1138	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1139	>	*/
1140	>	void waitForThreadToEnterWaitState(Thread thread) {
1141	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1142	>	}
1143	>
1144	>	/**
1145	>	* Returns the number of milliseconds since time given by
1146	>	* startNanoTime, which must have been previously returned from a
1147	>	* call to {@link System#nanoTime()}.
1148	>	*/
1149	>	static long millisElapsedSince(long startNanoTime) {
1150	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1151	>	}
1152	>
1153	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1154	>	//         long startTime = System.nanoTime();
1155	>	//         try {
1156	>	//             r.run();
1157	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1158	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1159	>	//             throw new AssertionFailedError("did not return promptly");
1160	>	//     }
1161	>
1162	>	//     void assertTerminatesPromptly(Runnable r) {
1163	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1164	>	//     }
1165	>
1166	>	/**
1167	>	* Checks that timed f.get() returns the expected value, and does not
1168	>	* wait for the timeout to elapse before returning.
1169	>	*/
1170	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1171	>	long startTime = System.nanoTime();
1172	>	try {
1173	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1174	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1175	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1176	>	throw new AssertionFailedError("timed get did not return promptly");
1177	>	}
1178	>
1179	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1180	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1181	>	}
1182	>
1183	>	/**
1184	>	* Returns a new started daemon Thread running the given runnable.
1185	>	*/
1186	>	Thread newStartedThread(Runnable runnable) {
1187	>	Thread t = new Thread(runnable);
1188	>	t.setDaemon(true);
1189	>	t.start();
1190	>	return t;
1191	>	}
1192	>
1193	>	/**
1194	>	* Waits for the specified time (in milliseconds) for the thread
1195	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1196	>	* the thread (in the hope that it may terminate later) and fails.
1197	>	*/
1198	>	void awaitTermination(Thread t, long timeoutMillis) {
1199	>	try {
1200	>	t.join(timeoutMillis);
1201	>	} catch (InterruptedException fail) {
1202	>	threadUnexpectedException(fail);
1203	>	} finally {
1204	>	if (t.getState() != Thread.State.TERMINATED) {
1205	>	t.interrupt();
1206	>	fail("Test timed out");
1207		}
1208		}
1209		}
1210
1211	<	public class ShortInterruptedRunnable implements Runnable {
1212	<	public void run() {
1211	>	/**
1212	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1213	>	* terminate (using {@link Thread#join(long)}), else interrupts
1214	>	* the thread (in the hope that it may terminate later) and fails.
1215	>	*/
1216	>	void awaitTermination(Thread t) {
1217	>	awaitTermination(t, LONG_DELAY_MS);
1218	>	}
1219	>
1220	>	// Some convenient Runnable classes
1221	>
1222	>	public abstract class CheckedRunnable implements Runnable {
1223	>	protected abstract void realRun() throws Throwable;
1224	>
1225	>	public final void run() {
1226		try {
1227	<	Thread.sleep(SHORT_DELAY_MS);
1228	<	threadFail("should throw IE");
1227	>	realRun();
1228	>	} catch (Throwable fail) {
1229	>	threadUnexpectedException(fail);
1230		}
1231	<	catch(InterruptedException success) {
1231	>	}
1232	>	}
1233	>
1234	>	public abstract class RunnableShouldThrow implements Runnable {
1235	>	protected abstract void realRun() throws Throwable;
1236	>
1237	>	final Class<?> exceptionClass;
1238	>
1239	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1240	>	this.exceptionClass = exceptionClass;
1241	>	}
1242	>
1243	>	public final void run() {
1244	>	try {
1245	>	realRun();
1246	>	threadShouldThrow(exceptionClass.getSimpleName());
1247	>	} catch (Throwable t) {
1248	>	if (! exceptionClass.isInstance(t))
1249	>	threadUnexpectedException(t);
1250		}
1251		}
1252		}
1253
1254	<	public class SmallRunnable implements Runnable {
1255	<	public void run() {
1254	>	public abstract class ThreadShouldThrow extends Thread {
1255	>	protected abstract void realRun() throws Throwable;
1256	>
1257	>	final Class<?> exceptionClass;
1258	>
1259	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1260	>	this.exceptionClass = exceptionClass;
1261	>	}
1262	>
1263	>	public final void run() {
1264		try {
1265	<	Thread.sleep(SMALL_DELAY_MS);
1265	>	realRun();
1266	>	threadShouldThrow(exceptionClass.getSimpleName());
1267	>	} catch (Throwable t) {
1268	>	if (! exceptionClass.isInstance(t))
1269	>	threadUnexpectedException(t);
1270		}
1271	<	catch(Exception e) {
1272	<	threadFail("unexpectedException");
1271	>	}
1272	>	}
1273	>
1274	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1275	>	protected abstract void realRun() throws Throwable;
1276	>
1277	>	public final void run() {
1278	>	try {
1279	>	realRun();
1280	>	threadShouldThrow("InterruptedException");
1281	>	} catch (InterruptedException success) {
1282	>	threadAssertFalse(Thread.interrupted());
1283	>	} catch (Throwable fail) {
1284	>	threadUnexpectedException(fail);
1285		}
1286		}
1287		}
1288
1289	<	public class SmallCallable implements Callable {
1290	<	public Object call() {
1289	>	public abstract class CheckedCallable<T> implements Callable<T> {
1290	>	protected abstract T realCall() throws Throwable;
1291	>
1292	>	public final T call() {
1293		try {
1294	<	Thread.sleep(SMALL_DELAY_MS);
1294	>	return realCall();
1295	>	} catch (Throwable fail) {
1296	>	threadUnexpectedException(fail);
1297	>	return null;
1298		}
1299	<	catch(Exception e) {
1300	<	threadFail("unexpectedException");
1299	>	}
1300	>	}
1301	>
1302	>	public abstract class CheckedInterruptedCallable<T>
1303	>	implements Callable<T> {
1304	>	protected abstract T realCall() throws Throwable;
1305	>
1306	>	public final T call() {
1307	>	try {
1308	>	T result = realCall();
1309	>	threadShouldThrow("InterruptedException");
1310	>	return result;
1311	>	} catch (InterruptedException success) {
1312	>	threadAssertFalse(Thread.interrupted());
1313	>	} catch (Throwable fail) {
1314	>	threadUnexpectedException(fail);
1315		}
1316	+	return null;
1317	+	}
1318	+	}
1319	+
1320	+	public static class NoOpRunnable implements Runnable {
1321	+	public void run() {}
1322	+	}
1323	+
1324	+	public static class NoOpCallable implements Callable {
1325	+	public Object call() { return Boolean.TRUE; }
1326	+	}
1327	+
1328	+	public static final String TEST_STRING = "a test string";
1329	+
1330	+	public static class StringTask implements Callable<String> {
1331	+	final String value;
1332	+	public StringTask() { this(TEST_STRING); }
1333	+	public StringTask(String value) { this.value = value; }
1334	+	public String call() { return value; }
1335	+	}
1336	+
1337	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1338	+	return new CheckedCallable<String>() {
1339	+	protected String realCall() {
1340	+	try {
1341	+	latch.await();
1342	+	} catch (InterruptedException quittingTime) {}
1343	+	return TEST_STRING;
1344	+	}};
1345	+	}
1346	+
1347	+	public Runnable countDowner(final CountDownLatch latch) {
1348	+	return new CheckedRunnable() {
1349	+	public void realRun() throws InterruptedException {
1350	+	latch.countDown();
1351	+	}};
1352	+	}
1353	+
1354	+	class LatchAwaiter extends CheckedRunnable {
1355	+	static final int NEW = 0;
1356	+	static final int RUNNING = 1;
1357	+	static final int DONE = 2;
1358	+	final CountDownLatch latch;
1359	+	int state = NEW;
1360	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1361	+	public void realRun() throws InterruptedException {
1362	+	state = 1;
1363	+	await(latch);
1364	+	state = 2;
1365	+	}
1366	+	}
1367	+
1368	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1369	+	return new LatchAwaiter(latch);
1370	+	}
1371	+
1372	+	public void await(CountDownLatch latch) {
1373	+	try {
1374	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1375	+	} catch (Throwable fail) {
1376	+	threadUnexpectedException(fail);
1377	+	}
1378	+	}
1379	+
1380	+	public void await(Semaphore semaphore) {
1381	+	try {
1382	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1383	+	} catch (Throwable fail) {
1384	+	threadUnexpectedException(fail);
1385	+	}
1386	+	}
1387	+
1388	+	//     /**
1389	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1390	+	//      */
1391	+	//     public void await(AtomicBoolean flag) {
1392	+	//         await(flag, LONG_DELAY_MS);
1393	+	//     }
1394	+
1395	+	//     /**
1396	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1397	+	//      */
1398	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1399	+	//         long startTime = System.nanoTime();
1400	+	//         while (!flag.get()) {
1401	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1402	+	//                 throw new AssertionFailedError("timed out");
1403	+	//             Thread.yield();
1404	+	//         }
1405	+	//     }
1406	+
1407	+	public static class NPETask implements Callable<String> {
1408	+	public String call() { throw new NullPointerException(); }
1409	+	}
1410	+
1411	+	public static class CallableOne implements Callable<Integer> {
1412	+	public Integer call() { return one; }
1413	+	}
1414	+
1415	+	public class ShortRunnable extends CheckedRunnable {
1416	+	protected void realRun() throws Throwable {
1417	+	delay(SHORT_DELAY_MS);
1418	+	}
1419	+	}
1420	+
1421	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1422	+	protected void realRun() throws InterruptedException {
1423	+	delay(SHORT_DELAY_MS);
1424	+	}
1425	+	}
1426	+
1427	+	public class SmallRunnable extends CheckedRunnable {
1428	+	protected void realRun() throws Throwable {
1429	+	delay(SMALL_DELAY_MS);
1430	+	}
1431	+	}
1432	+
1433	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1434	+	protected void realRun() {
1435	+	try {
1436	+	delay(SMALL_DELAY_MS);
1437	+	} catch (InterruptedException ok) {}
1438	+	}
1439	+	}
1440	+
1441	+	public class SmallCallable extends CheckedCallable {
1442	+	protected Object realCall() throws InterruptedException {
1443	+	delay(SMALL_DELAY_MS);
1444		return Boolean.TRUE;
1445		}
1446		}
1447
1448	<	public class SmallInterruptedRunnable implements Runnable {
1448	>	public class MediumRunnable extends CheckedRunnable {
1449	>	protected void realRun() throws Throwable {
1450	>	delay(MEDIUM_DELAY_MS);
1451	>	}
1452	>	}
1453	>
1454	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1455	>	protected void realRun() throws InterruptedException {
1456	>	delay(MEDIUM_DELAY_MS);
1457	>	}
1458	>	}
1459	>
1460	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1461	>	return new CheckedRunnable() {
1462	>	protected void realRun() {
1463	>	try {
1464	>	delay(timeoutMillis);
1465	>	} catch (InterruptedException ok) {}
1466	>	}};
1467	>	}
1468	>
1469	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1470	>	protected void realRun() {
1471	>	try {
1472	>	delay(MEDIUM_DELAY_MS);
1473	>	} catch (InterruptedException ok) {}
1474	>	}
1475	>	}
1476	>
1477	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1478	>	protected void realRun() {
1479	>	try {
1480	>	delay(LONG_DELAY_MS);
1481	>	} catch (InterruptedException ok) {}
1482	>	}
1483	>	}
1484	>
1485	>	/**
1486	>	* For use as ThreadFactory in constructors
1487	>	*/
1488	>	public static class SimpleThreadFactory implements ThreadFactory {
1489	>	public Thread newThread(Runnable r) {
1490	>	return new Thread(r);
1491	>	}
1492	>	}
1493	>
1494	>	public interface TrackedRunnable extends Runnable {
1495	>	boolean isDone();
1496	>	}
1497	>
1498	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1499	>	return new TrackedRunnable() {
1500	>	private volatile boolean done = false;
1501	>	public boolean isDone() { return done; }
1502	>	public void run() {
1503	>	try {
1504	>	delay(timeoutMillis);
1505	>	done = true;
1506	>	} catch (InterruptedException ok) {}
1507	>	}
1508	>	};
1509	>	}
1510	>
1511	>	public static class TrackedShortRunnable implements Runnable {
1512	>	public volatile boolean done = false;
1513		public void run() {
1514		try {
1515	<	Thread.sleep(SMALL_DELAY_MS);
1516	<	threadFail("should throw IE");
1517	<	}
1518	<	catch(InterruptedException success) {
1519	<	}
1515	>	delay(SHORT_DELAY_MS);
1516	>	done = true;
1517	>	} catch (InterruptedException ok) {}
1518	>	}
1519	>	}
1520	>
1521	>	public static class TrackedSmallRunnable implements Runnable {
1522	>	public volatile boolean done = false;
1523	>	public void run() {
1524	>	try {
1525	>	delay(SMALL_DELAY_MS);
1526	>	done = true;
1527	>	} catch (InterruptedException ok) {}
1528		}
1529		}
1530
1531	+	public static class TrackedMediumRunnable implements Runnable {
1532	+	public volatile boolean done = false;
1533	+	public void run() {
1534	+	try {
1535	+	delay(MEDIUM_DELAY_MS);
1536	+	done = true;
1537	+	} catch (InterruptedException ok) {}
1538	+	}
1539	+	}
1540
1541	<	public class MediumRunnable implements Runnable {
1541	>	public static class TrackedLongRunnable implements Runnable {
1542	>	public volatile boolean done = false;
1543		public void run() {
1544		try {
1545	<	Thread.sleep(MEDIUM_DELAY_MS);
1546	<	}
1547	<	catch(Exception e) {
228	<	threadFail("unexpectedException");
229	<	}
1545	>	delay(LONG_DELAY_MS);
1546	>	done = true;
1547	>	} catch (InterruptedException ok) {}
1548		}
1549		}
1550
1551	<	public class MediumInterruptedRunnable implements Runnable {
1551	>	public static class TrackedNoOpRunnable implements Runnable {
1552	>	public volatile boolean done = false;
1553		public void run() {
1554	+	done = true;
1555	+	}
1556	+	}
1557	+
1558	+	public static class TrackedCallable implements Callable {
1559	+	public volatile boolean done = false;
1560	+	public Object call() {
1561	+	try {
1562	+	delay(SMALL_DELAY_MS);
1563	+	done = true;
1564	+	} catch (InterruptedException ok) {}
1565	+	return Boolean.TRUE;
1566	+	}
1567	+	}
1568	+
1569	+	/**
1570	+	* Analog of CheckedRunnable for RecursiveAction
1571	+	*/
1572	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1573	+	protected abstract void realCompute() throws Throwable;
1574	+
1575	+	@Override protected final void compute() {
1576		try {
1577	<	Thread.sleep(MEDIUM_DELAY_MS);
1578	<	threadFail("should throw IE");
1577	>	realCompute();
1578	>	} catch (Throwable fail) {
1579	>	threadUnexpectedException(fail);
1580		}
1581	<	catch(InterruptedException success) {
1581	>	}
1582	>	}
1583	>
1584	>	/**
1585	>	* Analog of CheckedCallable for RecursiveTask
1586	>	*/
1587	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1588	>	protected abstract T realCompute() throws Throwable;
1589	>
1590	>	@Override protected final T compute() {
1591	>	try {
1592	>	return realCompute();
1593	>	} catch (Throwable fail) {
1594	>	threadUnexpectedException(fail);
1595	>	return null;
1596		}
1597		}
1598		}
1599
1600	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1601	<	public void run() {
1600	>	/**
1601	>	* For use as RejectedExecutionHandler in constructors
1602	>	*/
1603	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1604	>	public void rejectedExecution(Runnable r,
1605	>	ThreadPoolExecutor executor) {}
1606	>	}
1607	>
1608	>	/**
1609	>	* A CyclicBarrier that uses timed await and fails with
1610	>	* AssertionFailedErrors instead of throwing checked exceptions.
1611	>	*/
1612	>	public class CheckedBarrier extends CyclicBarrier {
1613	>	public CheckedBarrier(int parties) { super(parties); }
1614	>
1615	>	public int await() {
1616		try {
1617	<	Thread.sleep(MEDIUM_DELAY_MS);
1617	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1618	>	} catch (TimeoutException timedOut) {
1619	>	throw new AssertionFailedError("timed out");
1620	>	} catch (Exception fail) {
1621	>	AssertionFailedError afe =
1622	>	new AssertionFailedError("Unexpected exception: " + fail);
1623	>	afe.initCause(fail);
1624	>	throw afe;
1625		}
1626	<	catch(InterruptedException success) {
1626	>	}
1627	>	}
1628	>
1629	>	void checkEmpty(BlockingQueue q) {
1630	>	try {
1631	>	assertTrue(q.isEmpty());
1632	>	assertEquals(0, q.size());
1633	>	assertNull(q.peek());
1634	>	assertNull(q.poll());
1635	>	assertNull(q.poll(0, MILLISECONDS));
1636	>	assertEquals(q.toString(), "[]");
1637	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1638	>	assertFalse(q.iterator().hasNext());
1639	>	try {
1640	>	q.element();
1641	>	shouldThrow();
1642	>	} catch (NoSuchElementException success) {}
1643	>	try {
1644	>	q.iterator().next();
1645	>	shouldThrow();
1646	>	} catch (NoSuchElementException success) {}
1647	>	try {
1648	>	q.remove();
1649	>	shouldThrow();
1650	>	} catch (NoSuchElementException success) {}
1651	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1652	>	}
1653	>
1654	>	void assertSerialEquals(Object x, Object y) {
1655	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1656	>	}
1657	>
1658	>	void assertNotSerialEquals(Object x, Object y) {
1659	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1660	>	}
1661	>
1662	>	byte[] serialBytes(Object o) {
1663	>	try {
1664	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1665	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1666	>	oos.writeObject(o);
1667	>	oos.flush();
1668	>	oos.close();
1669	>	return bos.toByteArray();
1670	>	} catch (Throwable fail) {
1671	>	threadUnexpectedException(fail);
1672	>	return new byte[0];
1673	>	}
1674	>	}
1675	>
1676	>	@SuppressWarnings("unchecked")
1677	>	<T> T serialClone(T o) {
1678	>	try {
1679	>	ObjectInputStream ois = new ObjectInputStream
1680	>	(new ByteArrayInputStream(serialBytes(o)));
1681	>	T clone = (T) ois.readObject();
1682	>	assertSame(o.getClass(), clone.getClass());
1683	>	return clone;
1684	>	} catch (Throwable fail) {
1685	>	threadUnexpectedException(fail);
1686	>	return null;
1687	>	}
1688	>	}
1689	>
1690	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1691	>	Runnable... throwingActions) {
1692	>	for (Runnable throwingAction : throwingActions) {
1693	>	boolean threw = false;
1694	>	try { throwingAction.run(); }
1695	>	catch (Throwable t) {
1696	>	threw = true;
1697	>	if (!expectedExceptionClass.isInstance(t)) {
1698	>	AssertionFailedError afe =
1699	>	new AssertionFailedError
1700	>	("Expected " + expectedExceptionClass.getName() +
1701	>	", got " + t.getClass().getName());
1702	>	afe.initCause(t);
1703	>	threadUnexpectedException(afe);
1704	>	}
1705		}
1706	+	if (!threw)
1707	+	shouldThrow(expectedExceptionClass.getName());
1708		}
1709		}
1710	<
1710	>
1711	>	public void assertIteratorExhausted(Iterator<?> it) {
1712	>	try {
1713	>	it.next();
1714	>	shouldThrow();
1715	>	} catch (NoSuchElementException success) {}
1716	>	assertFalse(it.hasNext());
1717	>	}
1718		}

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