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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 1.169 by jsr166, Thu Oct 8 21:50:26 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	+	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	<	* Flag set true if any threadAssert methods fail
247	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
248		*/
249	<	protected volatile boolean threadFailed;
249	>	public static void main(String[] args) {
250	>	main(suite(), args);
251	>	}
252
253		/**
254	<	* Initialize test to indicat that no thread assertions have failed
254	>	* Runs all unit tests in the given test suite.
255	>	* Actual behavior influenced by jsr166.* system properties.
256		*/
257	<	public void setUp() {
258	<	threadFailed = false;
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	>	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	>	}
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.
331	>	*/
332	>	public static Test 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	>
500	>	/**
501	>	* Returns the shortest timed delay. This could
502	>	* be reimplemented to use for example a Property.
503	>	*/
504	>	protected long getShortDelay() {
505	>	return 50;
506	>	}
507	>
508	>	/**
509	>	* Sets delays as multiples of SHORT_DELAY.
510	>	*/
511	>	protected void setDelays() {
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 * 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	>	/**
536	>	* The first exception encountered if any threadAssertXXX method fails.
537	>	*/
538	>	private final AtomicReference<Throwable> threadFailure
539	>	= new AtomicReference<Throwable>(null);
540	>
541	>	/**
542	>	* Records an exception so that it can be rethrown later in the test
543	>	* harness thread, triggering a test case failure.  Only the first
544	>	* failure is recorded; subsequent calls to this method from within
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	>
553	>	public void setUp() {
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.getAndSet(null);
575	>	if (t != null) {
576	>	if (t instanceof Error)
577	>	throw (Error) t;
578	>	else if (t instanceof RuntimeException)
579	>	throw (RuntimeException) t;
580	>	else if (t instanceof Exception)
581	>	throw (Exception) 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	<	* Trigger test case failure if any thread assertions have failed
597	>	* Finds missing PoolCleaners
598		*/
599	<	public void tearDown() {
600	<	assertFalse(threadFailed);
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 AssertionFailedError thrown, so that
622	+	* the current testcase will fail.
623	+	*/
624		public void threadFail(String reason) {
625	<	threadFailed = true;
626	<	fail(reason);
625	>	try {
626	>	fail(reason);
627	>	} catch (AssertionFailedError t) {
628	>	threadRecordFailure(t);
629	>	throw t;
630	>	}
631		}
632
633	+	/**
634	+	* Just like assertTrue(b), but additionally recording (using
635	+	* threadRecordFailure) any AssertionFailedError thrown, so that
636	+	* the current testcase will fail.
637	+	*/
638		public void threadAssertTrue(boolean b) {
639	<	if (!b) {
83	<	threadFailed = true;
639	>	try {
640		assertTrue(b);
641	+	} catch (AssertionFailedError t) {
642	+	threadRecordFailure(t);
643	+	throw t;
644		}
645		}
646	+
647	+	/**
648	+	* Just like assertFalse(b), but additionally recording (using
649	+	* threadRecordFailure) any AssertionFailedError thrown, so that
650	+	* the current testcase will fail.
651	+	*/
652		public void threadAssertFalse(boolean b) {
653	<	if (b) {
89	<	threadFailed = true;
653	>	try {
654		assertFalse(b);
655	+	} catch (AssertionFailedError t) {
656	+	threadRecordFailure(t);
657	+	throw t;
658		}
659		}
660	+
661	+	/**
662	+	* Just like assertNull(x), but additionally recording (using
663	+	* threadRecordFailure) any AssertionFailedError thrown, so that
664	+	* the current testcase will fail.
665	+	*/
666		public void threadAssertNull(Object x) {
667	<	if (x != null) {
95	<	threadFailed = true;
667	>	try {
668		assertNull(x);
669	+	} catch (AssertionFailedError t) {
670	+	threadRecordFailure(t);
671	+	throw t;
672		}
673		}
674	+
675	+	/**
676	+	* Just like assertEquals(x, y), but additionally recording (using
677	+	* threadRecordFailure) any AssertionFailedError thrown, so that
678	+	* the current testcase will fail.
679	+	*/
680		public void threadAssertEquals(long x, long y) {
681	<	if (x != y) {
101	<	threadFailed = true;
681	>	try {
682		assertEquals(x, y);
683	+	} catch (AssertionFailedError t) {
684	+	threadRecordFailure(t);
685	+	throw t;
686		}
687		}
688	+
689	+	/**
690	+	* Just like assertEquals(x, y), but additionally recording (using
691	+	* threadRecordFailure) any AssertionFailedError thrown, so that
692	+	* the current testcase will fail.
693	+	*/
694		public void threadAssertEquals(Object x, Object y) {
695	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
695	>	try {
696		assertEquals(x, y);
697	+	} catch (AssertionFailedError fail) {
698	+	threadRecordFailure(fail);
699	+	throw fail;
700	+	} catch (Throwable fail) {
701	+	threadUnexpectedException(fail);
702		}
703		}
704
705		/**
706	<	* Wait out termination of a thread pool or fail doing so
706	>	* Just like assertSame(x, y), but additionally recording (using
707	>	* threadRecordFailure) any AssertionFailedError thrown, so that
708	>	* the current testcase will fail.
709		*/
710	<	public void joinPool(ExecutorService exec) {
710	>	public void threadAssertSame(Object x, Object y) {
711		try {
712	<	exec.shutdown();
713	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
714	<	} catch(InterruptedException ie) {
715	<	fail("unexpected exception");
712	>	assertSame(x, y);
713	>	} catch (AssertionFailedError fail) {
714	>	threadRecordFailure(fail);
715	>	throw fail;
716	>	}
717	>	}
718	>
719	>	/**
720	>	* Calls threadFail with message "should throw exception".
721	>	*/
722	>	public void threadShouldThrow() {
723	>	threadFail("should throw exception");
724	>	}
725	>
726	>	/**
727	>	* Calls threadFail with message "should throw" + exceptionName.
728	>	*/
729	>	public void threadShouldThrow(String exceptionName) {
730	>	threadFail("should throw " + exceptionName);
731	>	}
732	>
733	>	/**
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();
741	>	if (t instanceof RuntimeException)
742	>	throw (RuntimeException) t;
743	>	else if (t instanceof Error)
744	>	throw (Error) t;
745	>	else {
746	>	AssertionFailedError afe =
747	>	new AssertionFailedError("unexpected exception: " + t);
748	>	afe.initCause(t);
749	>	throw afe;
750		}
751		}
752
753	<	public static final long SHORT_DELAY_MS =   100;
754	<	public static final long SMALL_DELAY_MS =   500;
755	<	public static final long MEDIUM_DELAY_MS = 1000;
756	<	public static final long LONG_DELAY_MS =   5000;
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	+	void joinPool(ExecutorService pool) {
822	+	try {
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 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".
959	+	*/
960	+	public void shouldThrow() {
961	+	fail("Should throw exception");
962	+	}
963	+
964	+	/**
965	+	* Fails with message "should throw " + exceptionName.
966	+	*/
967	+	public void shouldThrow(String exceptionName) {
968	+	fail("Should throw " + exceptionName);
969	+	}
970
971		/**
972		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 975 | public class JSR166TestCase extends Test
975
976		// Some convenient Integer constants
977
978	<	public static final Integer zero = new Integer(0);
979	<	public static final Integer one = new Integer(1);
980	<	public static final Integer two = new Integer(2);
981	<	public static final Integer three  = new Integer(3);
978	>	public static final Integer zero  = new Integer(0);
979	>	public static final Integer one   = new Integer(1);
980	>	public static final Integer two   = new Integer(2);
981	>	public static final Integer three = new Integer(3);
982		public static final Integer four  = new Integer(4);
983		public static final Integer five  = new Integer(5);
984	<	public static final Integer six = new Integer(6);
984	>	public static final Integer six   = new Integer(6);
985		public static final Integer seven = new Integer(7);
986		public static final Integer eight = new Integer(8);
987	<	public static final Integer nine = new Integer(9);
987	>	public static final Integer nine  = new Integer(9);
988		public static final Integer m1  = new Integer(-1);
989		public static final Integer m2  = new Integer(-2);
990		public static final Integer m3  = new Integer(-3);
991	<	public static final Integer m4 = new Integer(-4);
992	<	public static final Integer m5 = new Integer(-5);
991	>	public static final Integer m4  = new Integer(-4);
992	>	public static final Integer m5  = new Integer(-5);
993	>	public static final Integer m6  = new Integer(-6);
994		public static final Integer m10 = new Integer(-10);
995
996	+	/**
997	+	* Runs Runnable r with a security policy that permits precisely
998	+	* the specified permissions.  If there is no current security
999	+	* manager, the runnable is run twice, both with and without a
1000	+	* security manager.  We require that any security manager permit
1001	+	* getPolicy/setPolicy.
1002	+	*/
1003	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1004	+	SecurityManager sm = System.getSecurityManager();
1005	+	if (sm == null) {
1006	+	r.run();
1007	+	}
1008	+	runWithSecurityManagerWithPermissions(r, permissions);
1009	+	}
1010
1011	<	// Some convenient Runnable classes
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	>	runWithSecurityManagerWithPermissions(r, permissions);
1027	>	} finally {
1028	>	System.setSecurityManager(null);
1029	>	Policy.setPolicy(savedPolicy);
1030	>	}
1031	>	} else {
1032	>	Policy savedPolicy = Policy.getPolicy();
1033	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1034	>	Policy.setPolicy(policy);
1035
1036	<	public static class NoOpRunnable implements Runnable {
1037	<	public void run() {}
1036	>	try {
1037	>	r.run();
1038	>	} finally {
1039	>	policy.addPermission(new SecurityPermission("setPolicy"));
1040	>	Policy.setPolicy(savedPolicy);
1041	>	}
1042	>	}
1043		}
1044
1045	<	public static class NoOpCallable implements Callable {
1046	<	public Object call() { return Boolean.TRUE; }
1045	>	/**
1046	>	* Runs a runnable without any permissions.
1047	>	*/
1048	>	public void runWithoutPermissions(Runnable r) {
1049	>	runWithPermissions(r);
1050		}
1051
1052	<	public class ShortRunnable implements Runnable {
1053	<	public void run() {
1054	<	try {
1055	<	Thread.sleep(SHORT_DELAY_MS);
1052	>	/**
1053	>	* A security policy where new permissions can be dynamically added
1054	>	* or all cleared.
1055	>	*/
1056	>	public static class AdjustablePolicy extends java.security.Policy {
1057	>	Permissions perms = new Permissions();
1058	>	AdjustablePolicy(Permission... permissions) {
1059	>	for (Permission permission : permissions)
1060	>	perms.add(permission);
1061	>	}
1062	>	void addPermission(Permission perm) { perms.add(perm); }
1063	>	void clearPermissions() { perms = new Permissions(); }
1064	>	public PermissionCollection getPermissions(CodeSource cs) {
1065	>	return perms;
1066	>	}
1067	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1068	>	return perms;
1069	>	}
1070	>	public boolean implies(ProtectionDomain pd, Permission p) {
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	>	/**
1083	>	* Returns a policy containing all the permissions we ever need.
1084	>	*/
1085	>	public static Policy permissivePolicy() {
1086	>	return new AdjustablePolicy
1087	>	// Permissions j.u.c. needs directly
1088	>	(new RuntimePermission("modifyThread"),
1089	>	new RuntimePermission("getClassLoader"),
1090	>	new RuntimePermission("setContextClassLoader"),
1091	>	// Permissions needed to change permissions!
1092	>	new SecurityPermission("getPolicy"),
1093	>	new SecurityPermission("setPolicy"),
1094	>	new RuntimePermission("setSecurityManager"),
1095	>	// Permissions needed by the junit test harness
1096	>	new RuntimePermission("accessDeclaredMembers"),
1097	>	new PropertyPermission("*", "read"),
1098	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1099	>	}
1100	>
1101	>	/**
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	<	catch(Exception e) {
1135	<	threadFail("unexpectedException");
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	>	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	>	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 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	<	public class ShortInterruptedRunnable implements Runnable {
1214	<	public void run() {
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 {
1225	>	protected abstract void realRun() throws Throwable;
1226	>
1227	>	public final void run() {
1228		try {
1229	<	Thread.sleep(SHORT_DELAY_MS);
1230	<	threadFail("should throw IE");
1229	>	realRun();
1230	>	} catch (Throwable fail) {
1231	>	threadUnexpectedException(fail);
1232		}
1233	<	catch(InterruptedException success) {
1233	>	}
1234	>	}
1235	>
1236	>	public abstract class RunnableShouldThrow implements Runnable {
1237	>	protected abstract void realRun() throws Throwable;
1238	>
1239	>	final Class<?> exceptionClass;
1240	>
1241	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1242	>	this.exceptionClass = exceptionClass;
1243	>	}
1244	>
1245	>	public final void run() {
1246	>	try {
1247	>	realRun();
1248	>	threadShouldThrow(exceptionClass.getSimpleName());
1249	>	} catch (Throwable t) {
1250	>	if (! exceptionClass.isInstance(t))
1251	>	threadUnexpectedException(t);
1252		}
1253		}
1254		}
1255
1256	<	public class SmallRunnable implements Runnable {
1257	<	public void run() {
1256	>	public abstract class ThreadShouldThrow extends Thread {
1257	>	protected abstract void realRun() throws Throwable;
1258	>
1259	>	final Class<?> exceptionClass;
1260	>
1261	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1262	>	this.exceptionClass = exceptionClass;
1263	>	}
1264	>
1265	>	public final void run() {
1266		try {
1267	<	Thread.sleep(SMALL_DELAY_MS);
1267	>	realRun();
1268	>	threadShouldThrow(exceptionClass.getSimpleName());
1269	>	} catch (Throwable t) {
1270	>	if (! exceptionClass.isInstance(t))
1271	>	threadUnexpectedException(t);
1272		}
1273	<	catch(Exception e) {
1274	<	threadFail("unexpectedException");
1273	>	}
1274	>	}
1275	>
1276	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1277	>	protected abstract void realRun() throws Throwable;
1278	>
1279	>	public final void run() {
1280	>	try {
1281	>	realRun();
1282	>	threadShouldThrow("InterruptedException");
1283	>	} catch (InterruptedException success) {
1284	>	threadAssertFalse(Thread.interrupted());
1285	>	} catch (Throwable fail) {
1286	>	threadUnexpectedException(fail);
1287		}
1288		}
1289		}
1290
1291	<	public class SmallCallable implements Callable {
1292	<	public Object call() {
1291	>	public abstract class CheckedCallable<T> implements Callable<T> {
1292	>	protected abstract T realCall() throws Throwable;
1293	>
1294	>	public final T call() {
1295		try {
1296	<	Thread.sleep(SMALL_DELAY_MS);
1296	>	return realCall();
1297	>	} catch (Throwable fail) {
1298	>	threadUnexpectedException(fail);
1299	>	return null;
1300		}
1301	<	catch(Exception e) {
1302	<	threadFail("unexpectedException");
1301	>	}
1302	>	}
1303	>
1304	>	public abstract class CheckedInterruptedCallable<T>
1305	>	implements Callable<T> {
1306	>	protected abstract T realCall() throws Throwable;
1307	>
1308	>	public final T call() {
1309	>	try {
1310	>	T result = realCall();
1311	>	threadShouldThrow("InterruptedException");
1312	>	return result;
1313	>	} catch (InterruptedException success) {
1314	>	threadAssertFalse(Thread.interrupted());
1315	>	} catch (Throwable fail) {
1316	>	threadUnexpectedException(fail);
1317		}
1318	+	return null;
1319	+	}
1320	+	}
1321	+
1322	+	public static class NoOpRunnable implements Runnable {
1323	+	public void run() {}
1324	+	}
1325	+
1326	+	public static class NoOpCallable implements Callable {
1327	+	public Object call() { return Boolean.TRUE; }
1328	+	}
1329	+
1330	+	public static final String TEST_STRING = "a test string";
1331	+
1332	+	public static class StringTask implements Callable<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	+	protected String realCall() {
1342	+	try {
1343	+	latch.await();
1344	+	} catch (InterruptedException quittingTime) {}
1345	+	return TEST_STRING;
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	+	}
1412	+
1413	+	public static class CallableOne implements Callable<Integer> {
1414	+	public Integer call() { return one; }
1415	+	}
1416	+
1417	+	public class ShortRunnable extends CheckedRunnable {
1418	+	protected void realRun() throws Throwable {
1419	+	delay(SHORT_DELAY_MS);
1420	+	}
1421	+	}
1422	+
1423	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1424	+	protected void realRun() throws InterruptedException {
1425	+	delay(SHORT_DELAY_MS);
1426	+	}
1427	+	}
1428	+
1429	+	public class SmallRunnable extends CheckedRunnable {
1430	+	protected void realRun() throws Throwable {
1431	+	delay(SMALL_DELAY_MS);
1432	+	}
1433	+	}
1434	+
1435	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1436	+	protected void realRun() {
1437	+	try {
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	+	delay(SMALL_DELAY_MS);
1446		return Boolean.TRUE;
1447		}
1448		}
1449
1450	<	public class SmallInterruptedRunnable implements Runnable {
1450	>	public class MediumRunnable extends CheckedRunnable {
1451	>	protected void realRun() throws Throwable {
1452	>	delay(MEDIUM_DELAY_MS);
1453	>	}
1454	>	}
1455	>
1456	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1457	>	protected void realRun() throws InterruptedException {
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	>	delay(MEDIUM_DELAY_MS);
1475	>	} catch (InterruptedException ok) {}
1476	>	}
1477	>	}
1478	>
1479	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1480	>	protected void realRun() {
1481	>	try {
1482	>	delay(LONG_DELAY_MS);
1483	>	} catch (InterruptedException ok) {}
1484	>	}
1485	>	}
1486	>
1487	>	/**
1488	>	* For use as ThreadFactory in constructors
1489	>	*/
1490	>	public static class SimpleThreadFactory implements ThreadFactory {
1491	>	public Thread newThread(Runnable r) {
1492	>	return new Thread(r);
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);
1518	<	threadFail("should throw IE");
1519	<	}
1520	<	catch(InterruptedException success) {
1521	<	}
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		}
1531		}
1532
1533	+	public static class TrackedMediumRunnable implements Runnable {
1534	+	public volatile boolean done = false;
1535	+	public void run() {
1536	+	try {
1537	+	delay(MEDIUM_DELAY_MS);
1538	+	done = true;
1539	+	} catch (InterruptedException ok) {}
1540	+	}
1541	+	}
1542
1543	<	public class MediumRunnable implements Runnable {
1543	>	public static class TrackedLongRunnable implements Runnable {
1544	>	public volatile boolean done = false;
1545		public void run() {
1546		try {
1547	<	Thread.sleep(MEDIUM_DELAY_MS);
1548	<	}
1549	<	catch(Exception e) {
228	<	threadFail("unexpectedException");
229	<	}
1547	>	delay(LONG_DELAY_MS);
1548	>	done = true;
1549	>	} catch (InterruptedException ok) {}
1550		}
1551		}
1552
1553	<	public class MediumInterruptedRunnable implements Runnable {
1553	>	public static class TrackedNoOpRunnable implements Runnable {
1554	>	public volatile boolean done = false;
1555		public void run() {
1556	+	done = true;
1557	+	}
1558	+	}
1559	+
1560	+	public static class TrackedCallable implements Callable {
1561	+	public volatile boolean done = false;
1562	+	public Object call() {
1563	+	try {
1564	+	delay(SMALL_DELAY_MS);
1565	+	done = true;
1566	+	} catch (InterruptedException ok) {}
1567	+	return Boolean.TRUE;
1568	+	}
1569	+	}
1570	+
1571	+	/**
1572	+	* Analog of CheckedRunnable for RecursiveAction
1573	+	*/
1574	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1575	+	protected abstract void realCompute() throws Throwable;
1576	+
1577	+	@Override protected final void compute() {
1578		try {
1579	<	Thread.sleep(MEDIUM_DELAY_MS);
1580	<	threadFail("should throw IE");
1579	>	realCompute();
1580	>	} catch (Throwable fail) {
1581	>	threadUnexpectedException(fail);
1582		}
1583	<	catch(InterruptedException success) {
1583	>	}
1584	>	}
1585	>
1586	>	/**
1587	>	* Analog of CheckedCallable for RecursiveTask
1588	>	*/
1589	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1590	>	protected abstract T realCompute() throws Throwable;
1591	>
1592	>	@Override protected final T compute() {
1593	>	try {
1594	>	return realCompute();
1595	>	} catch (Throwable fail) {
1596	>	threadUnexpectedException(fail);
1597	>	return null;
1598		}
1599		}
1600		}
1601
1602	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1603	<	public void run() {
1602	>	/**
1603	>	* For use as RejectedExecutionHandler in constructors
1604	>	*/
1605	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1606	>	public void rejectedExecution(Runnable r,
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	<	Thread.sleep(MEDIUM_DELAY_MS);
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	<	catch(InterruptedException success) {
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	<
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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