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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.165 by jsr166, Mon Oct 5 01:10:09 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		* but even so, if there is ever any doubt, they can all be increased
95	<	* in one spot to rerun tests on slower platforms</li>
95	>	* in one spot to rerun tests on slower platforms.
96		*
97	<	* <li> All threads generated must be joined inside each test case
98	<	* method (or <tt>fail</tt> to do so) before returning from the
99	<	* method. The {@link joinPool} method can be used to do this when
100	<	* using Executors.</li>
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	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
246	+	*/
247	+	public static void main(String[] args) {
248	+	main(suite(), args);
249	+	}
250	+
251	+	/**
252	+	* Runs all unit tests in the given test suite.
253	+	* Actual behavior influenced by jsr166.* system properties.
254	+	*/
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
61	–
498		/**
499	<	* Return the shortest timed delay. This could
500	<	* be reimplmented to use for example a Property.
501	<	*/
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
70	–
506		/**
507	<	* Set delays as multiples fo SHORT_DELAY.
507	>	* Sets delays as multiples of SHORT_DELAY.
508		*/
509	<	protected  void setDelays() {
509	>	protected void setDelays() {
510		SHORT_DELAY_MS = getShortDelay();
511	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
511	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
512		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
513	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
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	<	* Flag set true if any threadAssert methods fail
534	>	* The first exception encountered if any threadAssertXXX method fails.
535		*/
536	<	protected volatile boolean threadFailed;
536	>	private final AtomicReference<Throwable> threadFailure
537	>	= new AtomicReference<Throwable>(null);
538
539		/**
540	<	* Initialize test to indicat that no thread assertions have failed
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 setUp() {
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	<	threadFailed = false;
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	<	* Trigger test case failure if any thread assertions have failed
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() {
572	<	assertFalse(threadFailed);
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	+	* Finds missing PoolCleaners
596	+	*/
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) {
108	<	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) {
114	<	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) {
120	<	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) {
126	<	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))) {
132	<	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	+	* 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 threadAssertSame(Object x, Object y) {
709	+	try {
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	<	threadFailed = true;
139	<	fail("should throw exception");
721	>	threadFail("should throw exception");
722		}
723
724	<	public void threadUnexpectedException() {
725	<	threadFailed = true;
726	<	fail("Unexpected exception");
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		/**
752	<	* Wait out termination of a thread pool or fail doing so
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	<	public void joinPool(ExecutorService exec) {
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	>	PoolCleaner cleaner(ExecutorService pool) {
780	>	return new PoolCleaner(pool);
781	>	}
782	>
783	>	/**
784	>	* Waits out termination of a thread pool or fails doing so.
785	>	*/
786	>	void joinPool(ExecutorService pool) {
787		try {
788	<	exec.shutdown();
789	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
790	<	} catch(InterruptedException ie) {
791	<	fail("Unexpected exception");
788	>	pool.shutdown();
789	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
790	>	try {
791	>	threadFail("ExecutorService " + pool +
792	>	" did not terminate in a timely manner");
793	>	} finally {
794	>	// last resort, for the benefit of subsequent tests
795	>	pool.shutdownNow();
796	>	pool.awaitTermination(SMALL_DELAY_MS, MILLISECONDS);
797	>	}
798	>	}
799	>	} catch (SecurityException ok) {
800	>	// Allowed in case test doesn't have privs
801	>	} catch (InterruptedException fail) {
802	>	threadFail("Unexpected InterruptedException");
803		}
804		}
805
806	<
806	>	/** Like Runnable, but with the freedom to throw anything */
807	>	interface Action { public void run() throws Throwable; }
808	>
809	>	/**
810	>	* Runs all the given actions in parallel, failing if any fail.
811	>	* Useful for running multiple variants of tests that are
812	>	* necessarily individually slow because they must block.
813	>	*/
814	>	void testInParallel(Action ... actions) {
815	>	ExecutorService pool = Executors.newCachedThreadPool();
816	>	try (PoolCleaner cleaner = cleaner(pool)) {
817	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
818	>	for (final Action action : actions)
819	>	futures.add(pool.submit(new CheckedRunnable() {
820	>	public void realRun() throws Throwable { action.run();}}));
821	>	for (Future<?> future : futures)
822	>	try {
823	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
824	>	} catch (ExecutionException ex) {
825	>	threadUnexpectedException(ex.getCause());
826	>	} catch (Exception ex) {
827	>	threadUnexpectedException(ex);
828	>	}
829	>	}
830	>	}
831	>
832	>	/**
833	>	* A debugging tool to print stack traces of most threads, as jstack does.
834	>	* Uninteresting threads are filtered out.
835	>	*/
836	>	static void dumpTestThreads() {
837	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
838	>	System.err.println("------ stacktrace dump start ------");
839	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
840	>	String name = info.getThreadName();
841	>	if ("Signal Dispatcher".equals(name))
842	>	continue;
843	>	if ("Reference Handler".equals(name)
844	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
845	>	continue;
846	>	if ("Finalizer".equals(name)
847	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
848	>	continue;
849	>	if ("checkForWedgedTest".equals(name))
850	>	continue;
851	>	System.err.print(info);
852	>	}
853	>	System.err.println("------ stacktrace dump end ------");
854	>	}
855	>
856	>	/**
857	>	* Checks that thread does not terminate within the default
858	>	* millisecond delay of {@code timeoutMillis()}.
859	>	*/
860	>	void assertThreadStaysAlive(Thread thread) {
861	>	assertThreadStaysAlive(thread, timeoutMillis());
862	>	}
863	>
864	>	/**
865	>	* Checks that thread does not terminate within the given millisecond delay.
866	>	*/
867	>	void assertThreadStaysAlive(Thread thread, long millis) {
868	>	try {
869	>	// No need to optimize the failing case via Thread.join.
870	>	delay(millis);
871	>	assertTrue(thread.isAlive());
872	>	} catch (InterruptedException fail) {
873	>	threadFail("Unexpected InterruptedException");
874	>	}
875	>	}
876	>
877	>	/**
878	>	* Checks that the threads do not terminate within the default
879	>	* millisecond delay of {@code timeoutMillis()}.
880	>	*/
881	>	void assertThreadsStayAlive(Thread... threads) {
882	>	assertThreadsStayAlive(timeoutMillis(), threads);
883	>	}
884	>
885	>	/**
886	>	* Checks that the threads do not terminate within the given millisecond delay.
887	>	*/
888	>	void assertThreadsStayAlive(long millis, Thread... threads) {
889	>	try {
890	>	// No need to optimize the failing case via Thread.join.
891	>	delay(millis);
892	>	for (Thread thread : threads)
893	>	assertTrue(thread.isAlive());
894	>	} catch (InterruptedException fail) {
895	>	threadFail("Unexpected InterruptedException");
896	>	}
897	>	}
898	>
899	>	/**
900	>	* Checks that future.get times out, with the default timeout of
901	>	* {@code timeoutMillis()}.
902	>	*/
903	>	void assertFutureTimesOut(Future future) {
904	>	assertFutureTimesOut(future, timeoutMillis());
905	>	}
906	>
907	>	/**
908	>	* Checks that future.get times out, with the given millisecond timeout.
909	>	*/
910	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
911	>	long startTime = System.nanoTime();
912	>	try {
913	>	future.get(timeoutMillis, MILLISECONDS);
914	>	shouldThrow();
915	>	} catch (TimeoutException success) {
916	>	} catch (Exception fail) {
917	>	threadUnexpectedException(fail);
918	>	} finally { future.cancel(true); }
919	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
920	>	}
921	>
922	>	/**
923	>	* Fails with message "should throw exception".
924	>	*/
925		public void shouldThrow() {
926		fail("Should throw exception");
927		}
928
929	<	public void unexpectedException() {
930	<	fail("Unexpected exception");
929	>	/**
930	>	* Fails with message "should throw " + exceptionName.
931	>	*/
932	>	public void shouldThrow(String exceptionName) {
933	>	fail("Should throw " + exceptionName);
934		}
935
169	–
936		/**
937		* The number of elements to place in collections, arrays, etc.
938		*/
#	Line 174 | Line 940 | public class JSR166TestCase extends Test
940
941		// Some convenient Integer constants
942
943	<	public static final Integer zero = new Integer(0);
944	<	public static final Integer one = new Integer(1);
945	<	public static final Integer two = new Integer(2);
946	<	public static final Integer three  = new Integer(3);
943	>	public static final Integer zero  = new Integer(0);
944	>	public static final Integer one   = new Integer(1);
945	>	public static final Integer two   = new Integer(2);
946	>	public static final Integer three = new Integer(3);
947		public static final Integer four  = new Integer(4);
948		public static final Integer five  = new Integer(5);
949	<	public static final Integer six = new Integer(6);
949	>	public static final Integer six   = new Integer(6);
950		public static final Integer seven = new Integer(7);
951		public static final Integer eight = new Integer(8);
952	<	public static final Integer nine = new Integer(9);
952	>	public static final Integer nine  = new Integer(9);
953		public static final Integer m1  = new Integer(-1);
954		public static final Integer m2  = new Integer(-2);
955		public static final Integer m3  = new Integer(-3);
956	<	public static final Integer m4 = new Integer(-4);
957	<	public static final Integer m5 = new Integer(-5);
956	>	public static final Integer m4  = new Integer(-4);
957	>	public static final Integer m5  = new Integer(-5);
958	>	public static final Integer m6  = new Integer(-6);
959		public static final Integer m10 = new Integer(-10);
960
961	+	/**
962	+	* Runs Runnable r with a security policy that permits precisely
963	+	* the specified permissions.  If there is no current security
964	+	* manager, the runnable is run twice, both with and without a
965	+	* security manager.  We require that any security manager permit
966	+	* getPolicy/setPolicy.
967	+	*/
968	+	public void runWithPermissions(Runnable r, Permission... permissions) {
969	+	SecurityManager sm = System.getSecurityManager();
970	+	if (sm == null) {
971	+	r.run();
972	+	}
973	+	runWithSecurityManagerWithPermissions(r, permissions);
974	+	}
975
976	<	// Some convenient Runnable classes
976	>	/**
977	>	* Runs Runnable r with a security policy that permits precisely
978	>	* the specified permissions.  If there is no current security
979	>	* manager, a temporary one is set for the duration of the
980	>	* Runnable.  We require that any security manager permit
981	>	* getPolicy/setPolicy.
982	>	*/
983	>	public void runWithSecurityManagerWithPermissions(Runnable r,
984	>	Permission... permissions) {
985	>	SecurityManager sm = System.getSecurityManager();
986	>	if (sm == null) {
987	>	Policy savedPolicy = Policy.getPolicy();
988	>	try {
989	>	Policy.setPolicy(permissivePolicy());
990	>	System.setSecurityManager(new SecurityManager());
991	>	runWithSecurityManagerWithPermissions(r, permissions);
992	>	} finally {
993	>	System.setSecurityManager(null);
994	>	Policy.setPolicy(savedPolicy);
995	>	}
996	>	} else {
997	>	Policy savedPolicy = Policy.getPolicy();
998	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
999	>	Policy.setPolicy(policy);
1000
1001	<	public static class NoOpRunnable implements Runnable {
1002	<	public void run() {}
1001	>	try {
1002	>	r.run();
1003	>	} finally {
1004	>	policy.addPermission(new SecurityPermission("setPolicy"));
1005	>	Policy.setPolicy(savedPolicy);
1006	>	}
1007	>	}
1008		}
1009
1010	<	public static class NoOpCallable implements Callable {
1011	<	public Object call() { return Boolean.TRUE; }
1010	>	/**
1011	>	* Runs a runnable without any permissions.
1012	>	*/
1013	>	public void runWithoutPermissions(Runnable r) {
1014	>	runWithPermissions(r);
1015		}
1016
1017	<	public class ShortRunnable implements Runnable {
1018	<	public void run() {
1019	<	try {
1020	<	Thread.sleep(SHORT_DELAY_MS);
1017	>	/**
1018	>	* A security policy where new permissions can be dynamically added
1019	>	* or all cleared.
1020	>	*/
1021	>	public static class AdjustablePolicy extends java.security.Policy {
1022	>	Permissions perms = new Permissions();
1023	>	AdjustablePolicy(Permission... permissions) {
1024	>	for (Permission permission : permissions)
1025	>	perms.add(permission);
1026	>	}
1027	>	void addPermission(Permission perm) { perms.add(perm); }
1028	>	void clearPermissions() { perms = new Permissions(); }
1029	>	public PermissionCollection getPermissions(CodeSource cs) {
1030	>	return perms;
1031	>	}
1032	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1033	>	return perms;
1034	>	}
1035	>	public boolean implies(ProtectionDomain pd, Permission p) {
1036	>	return perms.implies(p);
1037	>	}
1038	>	public void refresh() {}
1039	>	public String toString() {
1040	>	List<Permission> ps = new ArrayList<Permission>();
1041	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1042	>	ps.add(e.nextElement());
1043	>	return "AdjustablePolicy with permissions " + ps;
1044	>	}
1045	>	}
1046	>
1047	>	/**
1048	>	* Returns a policy containing all the permissions we ever need.
1049	>	*/
1050	>	public static Policy permissivePolicy() {
1051	>	return new AdjustablePolicy
1052	>	// Permissions j.u.c. needs directly
1053	>	(new RuntimePermission("modifyThread"),
1054	>	new RuntimePermission("getClassLoader"),
1055	>	new RuntimePermission("setContextClassLoader"),
1056	>	// Permissions needed to change permissions!
1057	>	new SecurityPermission("getPolicy"),
1058	>	new SecurityPermission("setPolicy"),
1059	>	new RuntimePermission("setSecurityManager"),
1060	>	// Permissions needed by the junit test harness
1061	>	new RuntimePermission("accessDeclaredMembers"),
1062	>	new PropertyPermission("*", "read"),
1063	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1064	>	}
1065	>
1066	>	/**
1067	>	* Sleeps until the given time has elapsed.
1068	>	* Throws AssertionFailedError if interrupted.
1069	>	*/
1070	>	void sleep(long millis) {
1071	>	try {
1072	>	delay(millis);
1073	>	} catch (InterruptedException fail) {
1074	>	AssertionFailedError afe =
1075	>	new AssertionFailedError("Unexpected InterruptedException");
1076	>	afe.initCause(fail);
1077	>	throw afe;
1078	>	}
1079	>	}
1080	>
1081	>	/**
1082	>	* Spin-waits up to the specified number of milliseconds for the given
1083	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1084	>	*/
1085	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1086	>	long startTime = System.nanoTime();
1087	>	for (;;) {
1088	>	Thread.State s = thread.getState();
1089	>	if (s == Thread.State.BLOCKED ||
1090	>	s == Thread.State.WAITING ||
1091	>	s == Thread.State.TIMED_WAITING)
1092	>	return;
1093	>	else if (s == Thread.State.TERMINATED)
1094	>	fail("Unexpected thread termination");
1095	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1096	>	threadAssertTrue(thread.isAlive());
1097	>	return;
1098		}
1099	<	catch(Exception e) {
1100	<	threadUnexpectedException();
1099	>	Thread.yield();
1100	>	}
1101	>	}
1102	>
1103	>	/**
1104	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1105	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1106	>	*/
1107	>	void waitForThreadToEnterWaitState(Thread thread) {
1108	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1109	>	}
1110	>
1111	>	/**
1112	>	* Returns the number of milliseconds since time given by
1113	>	* startNanoTime, which must have been previously returned from a
1114	>	* call to {@link System#nanoTime()}.
1115	>	*/
1116	>	static long millisElapsedSince(long startNanoTime) {
1117	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1118	>	}
1119	>
1120	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1121	>	//         long startTime = System.nanoTime();
1122	>	//         try {
1123	>	//             r.run();
1124	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1125	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1126	>	//             throw new AssertionFailedError("did not return promptly");
1127	>	//     }
1128	>
1129	>	//     void assertTerminatesPromptly(Runnable r) {
1130	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1131	>	//     }
1132	>
1133	>	/**
1134	>	* Checks that timed f.get() returns the expected value, and does not
1135	>	* wait for the timeout to elapse before returning.
1136	>	*/
1137	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1138	>	long startTime = System.nanoTime();
1139	>	try {
1140	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1141	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1142	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1143	>	throw new AssertionFailedError("timed get did not return promptly");
1144	>	}
1145	>
1146	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1147	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1148	>	}
1149	>
1150	>	/**
1151	>	* Returns a new started daemon Thread running the given runnable.
1152	>	*/
1153	>	Thread newStartedThread(Runnable runnable) {
1154	>	Thread t = new Thread(runnable);
1155	>	t.setDaemon(true);
1156	>	t.start();
1157	>	return t;
1158	>	}
1159	>
1160	>	/**
1161	>	* Waits for the specified time (in milliseconds) for the thread
1162	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1163	>	* the thread (in the hope that it may terminate later) and fails.
1164	>	*/
1165	>	void awaitTermination(Thread t, long timeoutMillis) {
1166	>	try {
1167	>	t.join(timeoutMillis);
1168	>	} catch (InterruptedException fail) {
1169	>	threadUnexpectedException(fail);
1170	>	} finally {
1171	>	if (t.getState() != Thread.State.TERMINATED) {
1172	>	t.interrupt();
1173	>	fail("Test timed out");
1174		}
1175		}
1176		}
1177
1178	<	public class ShortInterruptedRunnable implements Runnable {
1179	<	public void run() {
1178	>	/**
1179	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1180	>	* terminate (using {@link Thread#join(long)}), else interrupts
1181	>	* the thread (in the hope that it may terminate later) and fails.
1182	>	*/
1183	>	void awaitTermination(Thread t) {
1184	>	awaitTermination(t, LONG_DELAY_MS);
1185	>	}
1186	>
1187	>	// Some convenient Runnable classes
1188	>
1189	>	public abstract class CheckedRunnable implements Runnable {
1190	>	protected abstract void realRun() throws Throwable;
1191	>
1192	>	public final void run() {
1193		try {
1194	<	Thread.sleep(SHORT_DELAY_MS);
1195	<	threadShouldThrow();
1194	>	realRun();
1195	>	} catch (Throwable fail) {
1196	>	threadUnexpectedException(fail);
1197		}
1198	<	catch(InterruptedException success) {
1198	>	}
1199	>	}
1200	>
1201	>	public abstract class RunnableShouldThrow implements Runnable {
1202	>	protected abstract void realRun() throws Throwable;
1203	>
1204	>	final Class<?> exceptionClass;
1205	>
1206	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1207	>	this.exceptionClass = exceptionClass;
1208	>	}
1209	>
1210	>	public final void run() {
1211	>	try {
1212	>	realRun();
1213	>	threadShouldThrow(exceptionClass.getSimpleName());
1214	>	} catch (Throwable t) {
1215	>	if (! exceptionClass.isInstance(t))
1216	>	threadUnexpectedException(t);
1217		}
1218		}
1219		}
1220
1221	<	public class SmallRunnable implements Runnable {
1222	<	public void run() {
1221	>	public abstract class ThreadShouldThrow extends Thread {
1222	>	protected abstract void realRun() throws Throwable;
1223	>
1224	>	final Class<?> exceptionClass;
1225	>
1226	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1227	>	this.exceptionClass = exceptionClass;
1228	>	}
1229	>
1230	>	public final void run() {
1231		try {
1232	<	Thread.sleep(SMALL_DELAY_MS);
1232	>	realRun();
1233	>	threadShouldThrow(exceptionClass.getSimpleName());
1234	>	} catch (Throwable t) {
1235	>	if (! exceptionClass.isInstance(t))
1236	>	threadUnexpectedException(t);
1237		}
1238	<	catch(Exception e) {
1239	<	threadUnexpectedException();
1238	>	}
1239	>	}
1240	>
1241	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1242	>	protected abstract void realRun() throws Throwable;
1243	>
1244	>	public final void run() {
1245	>	try {
1246	>	realRun();
1247	>	threadShouldThrow("InterruptedException");
1248	>	} catch (InterruptedException success) {
1249	>	threadAssertFalse(Thread.interrupted());
1250	>	} catch (Throwable fail) {
1251	>	threadUnexpectedException(fail);
1252		}
1253		}
1254		}
1255
1256	<	public class SmallCallable implements Callable {
1257	<	public Object call() {
1256	>	public abstract class CheckedCallable<T> implements Callable<T> {
1257	>	protected abstract T realCall() throws Throwable;
1258	>
1259	>	public final T call() {
1260		try {
1261	<	Thread.sleep(SMALL_DELAY_MS);
1261	>	return realCall();
1262	>	} catch (Throwable fail) {
1263	>	threadUnexpectedException(fail);
1264	>	return null;
1265		}
1266	<	catch(Exception e) {
1267	<	threadUnexpectedException();
1266	>	}
1267	>	}
1268	>
1269	>	public abstract class CheckedInterruptedCallable<T>
1270	>	implements Callable<T> {
1271	>	protected abstract T realCall() throws Throwable;
1272	>
1273	>	public final T call() {
1274	>	try {
1275	>	T result = realCall();
1276	>	threadShouldThrow("InterruptedException");
1277	>	return result;
1278	>	} catch (InterruptedException success) {
1279	>	threadAssertFalse(Thread.interrupted());
1280	>	} catch (Throwable fail) {
1281	>	threadUnexpectedException(fail);
1282		}
1283	+	return null;
1284	+	}
1285	+	}
1286	+
1287	+	public static class NoOpRunnable implements Runnable {
1288	+	public void run() {}
1289	+	}
1290	+
1291	+	public static class NoOpCallable implements Callable {
1292	+	public Object call() { return Boolean.TRUE; }
1293	+	}
1294	+
1295	+	public static final String TEST_STRING = "a test string";
1296	+
1297	+	public static class StringTask implements Callable<String> {
1298	+	final String value;
1299	+	public StringTask() { this(TEST_STRING); }
1300	+	public StringTask(String value) { this.value = value; }
1301	+	public String call() { return value; }
1302	+	}
1303	+
1304	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1305	+	return new CheckedCallable<String>() {
1306	+	protected String realCall() {
1307	+	try {
1308	+	latch.await();
1309	+	} catch (InterruptedException quittingTime) {}
1310	+	return TEST_STRING;
1311	+	}};
1312	+	}
1313	+
1314	+	public Runnable countDowner(final CountDownLatch latch) {
1315	+	return new CheckedRunnable() {
1316	+	public void realRun() throws InterruptedException {
1317	+	latch.countDown();
1318	+	}};
1319	+	}
1320	+
1321	+	class LatchAwaiter extends CheckedRunnable {
1322	+	static final int NEW = 0;
1323	+	static final int RUNNING = 1;
1324	+	static final int DONE = 2;
1325	+	final CountDownLatch latch;
1326	+	int state = NEW;
1327	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1328	+	public void realRun() throws InterruptedException {
1329	+	state = 1;
1330	+	await(latch);
1331	+	state = 2;
1332	+	}
1333	+	}
1334	+
1335	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1336	+	return new LatchAwaiter(latch);
1337	+	}
1338	+
1339	+	public void await(CountDownLatch latch) {
1340	+	try {
1341	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1342	+	} catch (Throwable fail) {
1343	+	threadUnexpectedException(fail);
1344	+	}
1345	+	}
1346	+
1347	+	public void await(Semaphore semaphore) {
1348	+	try {
1349	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1350	+	} catch (Throwable fail) {
1351	+	threadUnexpectedException(fail);
1352	+	}
1353	+	}
1354	+
1355	+	//     /**
1356	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1357	+	//      */
1358	+	//     public void await(AtomicBoolean flag) {
1359	+	//         await(flag, LONG_DELAY_MS);
1360	+	//     }
1361	+
1362	+	//     /**
1363	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1364	+	//      */
1365	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1366	+	//         long startTime = System.nanoTime();
1367	+	//         while (!flag.get()) {
1368	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1369	+	//                 throw new AssertionFailedError("timed out");
1370	+	//             Thread.yield();
1371	+	//         }
1372	+	//     }
1373	+
1374	+	public static class NPETask implements Callable<String> {
1375	+	public String call() { throw new NullPointerException(); }
1376	+	}
1377	+
1378	+	public static class CallableOne implements Callable<Integer> {
1379	+	public Integer call() { return one; }
1380	+	}
1381	+
1382	+	public class ShortRunnable extends CheckedRunnable {
1383	+	protected void realRun() throws Throwable {
1384	+	delay(SHORT_DELAY_MS);
1385	+	}
1386	+	}
1387	+
1388	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1389	+	protected void realRun() throws InterruptedException {
1390	+	delay(SHORT_DELAY_MS);
1391	+	}
1392	+	}
1393	+
1394	+	public class SmallRunnable extends CheckedRunnable {
1395	+	protected void realRun() throws Throwable {
1396	+	delay(SMALL_DELAY_MS);
1397	+	}
1398	+	}
1399	+
1400	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1401	+	protected void realRun() {
1402	+	try {
1403	+	delay(SMALL_DELAY_MS);
1404	+	} catch (InterruptedException ok) {}
1405	+	}
1406	+	}
1407	+
1408	+	public class SmallCallable extends CheckedCallable {
1409	+	protected Object realCall() throws InterruptedException {
1410	+	delay(SMALL_DELAY_MS);
1411		return Boolean.TRUE;
1412		}
1413		}
1414
1415	<	public class SmallInterruptedRunnable implements Runnable {
1415	>	public class MediumRunnable extends CheckedRunnable {
1416	>	protected void realRun() throws Throwable {
1417	>	delay(MEDIUM_DELAY_MS);
1418	>	}
1419	>	}
1420	>
1421	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1422	>	protected void realRun() throws InterruptedException {
1423	>	delay(MEDIUM_DELAY_MS);
1424	>	}
1425	>	}
1426	>
1427	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1428	>	return new CheckedRunnable() {
1429	>	protected void realRun() {
1430	>	try {
1431	>	delay(timeoutMillis);
1432	>	} catch (InterruptedException ok) {}
1433	>	}};
1434	>	}
1435	>
1436	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1437	>	protected void realRun() {
1438	>	try {
1439	>	delay(MEDIUM_DELAY_MS);
1440	>	} catch (InterruptedException ok) {}
1441	>	}
1442	>	}
1443	>
1444	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1445	>	protected void realRun() {
1446	>	try {
1447	>	delay(LONG_DELAY_MS);
1448	>	} catch (InterruptedException ok) {}
1449	>	}
1450	>	}
1451	>
1452	>	/**
1453	>	* For use as ThreadFactory in constructors
1454	>	*/
1455	>	public static class SimpleThreadFactory implements ThreadFactory {
1456	>	public Thread newThread(Runnable r) {
1457	>	return new Thread(r);
1458	>	}
1459	>	}
1460	>
1461	>	public interface TrackedRunnable extends Runnable {
1462	>	boolean isDone();
1463	>	}
1464	>
1465	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1466	>	return new TrackedRunnable() {
1467	>	private volatile boolean done = false;
1468	>	public boolean isDone() { return done; }
1469	>	public void run() {
1470	>	try {
1471	>	delay(timeoutMillis);
1472	>	done = true;
1473	>	} catch (InterruptedException ok) {}
1474	>	}
1475	>	};
1476	>	}
1477	>
1478	>	public static class TrackedShortRunnable implements Runnable {
1479	>	public volatile boolean done = false;
1480		public void run() {
1481		try {
1482	<	Thread.sleep(SMALL_DELAY_MS);
1483	<	threadShouldThrow();
1484	<	}
256	<	catch(InterruptedException success) {
257	<	}
1482	>	delay(SHORT_DELAY_MS);
1483	>	done = true;
1484	>	} catch (InterruptedException ok) {}
1485		}
1486		}
1487
1488	+	public static class TrackedSmallRunnable implements Runnable {
1489	+	public volatile boolean done = false;
1490	+	public void run() {
1491	+	try {
1492	+	delay(SMALL_DELAY_MS);
1493	+	done = true;
1494	+	} catch (InterruptedException ok) {}
1495	+	}
1496	+	}
1497
1498	<	public class MediumRunnable implements Runnable {
1498	>	public static class TrackedMediumRunnable implements Runnable {
1499	>	public volatile boolean done = false;
1500		public void run() {
1501		try {
1502	<	Thread.sleep(MEDIUM_DELAY_MS);
1503	<	}
1504	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
1502	>	delay(MEDIUM_DELAY_MS);
1503	>	done = true;
1504	>	} catch (InterruptedException ok) {}
1505		}
1506		}
1507
1508	<	public class MediumInterruptedRunnable implements Runnable {
1508	>	public static class TrackedLongRunnable implements Runnable {
1509	>	public volatile boolean done = false;
1510		public void run() {
1511		try {
1512	<	Thread.sleep(MEDIUM_DELAY_MS);
1513	<	threadShouldThrow();
1512	>	delay(LONG_DELAY_MS);
1513	>	done = true;
1514	>	} catch (InterruptedException ok) {}
1515	>	}
1516	>	}
1517	>
1518	>	public static class TrackedNoOpRunnable implements Runnable {
1519	>	public volatile boolean done = false;
1520	>	public void run() {
1521	>	done = true;
1522	>	}
1523	>	}
1524	>
1525	>	public static class TrackedCallable implements Callable {
1526	>	public volatile boolean done = false;
1527	>	public Object call() {
1528	>	try {
1529	>	delay(SMALL_DELAY_MS);
1530	>	done = true;
1531	>	} catch (InterruptedException ok) {}
1532	>	return Boolean.TRUE;
1533	>	}
1534	>	}
1535	>
1536	>	/**
1537	>	* Analog of CheckedRunnable for RecursiveAction
1538	>	*/
1539	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1540	>	protected abstract void realCompute() throws Throwable;
1541	>
1542	>	@Override protected final void compute() {
1543	>	try {
1544	>	realCompute();
1545	>	} catch (Throwable fail) {
1546	>	threadUnexpectedException(fail);
1547		}
1548	<	catch(InterruptedException success) {
1548	>	}
1549	>	}
1550	>
1551	>	/**
1552	>	* Analog of CheckedCallable for RecursiveTask
1553	>	*/
1554	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1555	>	protected abstract T realCompute() throws Throwable;
1556	>
1557	>	@Override protected final T compute() {
1558	>	try {
1559	>	return realCompute();
1560	>	} catch (Throwable fail) {
1561	>	threadUnexpectedException(fail);
1562	>	return null;
1563		}
1564		}
1565		}
1566
1567	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1568	<	public void run() {
1567	>	/**
1568	>	* For use as RejectedExecutionHandler in constructors
1569	>	*/
1570	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1571	>	public void rejectedExecution(Runnable r,
1572	>	ThreadPoolExecutor executor) {}
1573	>	}
1574	>
1575	>	/**
1576	>	* A CyclicBarrier that uses timed await and fails with
1577	>	* AssertionFailedErrors instead of throwing checked exceptions.
1578	>	*/
1579	>	public class CheckedBarrier extends CyclicBarrier {
1580	>	public CheckedBarrier(int parties) { super(parties); }
1581	>
1582	>	public int await() {
1583		try {
1584	<	Thread.sleep(MEDIUM_DELAY_MS);
1584	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1585	>	} catch (TimeoutException timedOut) {
1586	>	throw new AssertionFailedError("timed out");
1587	>	} catch (Exception fail) {
1588	>	AssertionFailedError afe =
1589	>	new AssertionFailedError("Unexpected exception: " + fail);
1590	>	afe.initCause(fail);
1591	>	throw afe;
1592		}
1593	<	catch(InterruptedException success) {
1593	>	}
1594	>	}
1595	>
1596	>	void checkEmpty(BlockingQueue q) {
1597	>	try {
1598	>	assertTrue(q.isEmpty());
1599	>	assertEquals(0, q.size());
1600	>	assertNull(q.peek());
1601	>	assertNull(q.poll());
1602	>	assertNull(q.poll(0, MILLISECONDS));
1603	>	assertEquals(q.toString(), "[]");
1604	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1605	>	assertFalse(q.iterator().hasNext());
1606	>	try {
1607	>	q.element();
1608	>	shouldThrow();
1609	>	} catch (NoSuchElementException success) {}
1610	>	try {
1611	>	q.iterator().next();
1612	>	shouldThrow();
1613	>	} catch (NoSuchElementException success) {}
1614	>	try {
1615	>	q.remove();
1616	>	shouldThrow();
1617	>	} catch (NoSuchElementException success) {}
1618	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1619	>	}
1620	>
1621	>	void assertSerialEquals(Object x, Object y) {
1622	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1623	>	}
1624	>
1625	>	void assertNotSerialEquals(Object x, Object y) {
1626	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1627	>	}
1628	>
1629	>	byte[] serialBytes(Object o) {
1630	>	try {
1631	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1632	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1633	>	oos.writeObject(o);
1634	>	oos.flush();
1635	>	oos.close();
1636	>	return bos.toByteArray();
1637	>	} catch (Throwable fail) {
1638	>	threadUnexpectedException(fail);
1639	>	return new byte[0];
1640	>	}
1641	>	}
1642	>
1643	>	@SuppressWarnings("unchecked")
1644	>	<T> T serialClone(T o) {
1645	>	try {
1646	>	ObjectInputStream ois = new ObjectInputStream
1647	>	(new ByteArrayInputStream(serialBytes(o)));
1648	>	T clone = (T) ois.readObject();
1649	>	assertSame(o.getClass(), clone.getClass());
1650	>	return clone;
1651	>	} catch (Throwable fail) {
1652	>	threadUnexpectedException(fail);
1653	>	return null;
1654	>	}
1655	>	}
1656	>
1657	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1658	>	Runnable... throwingActions) {
1659	>	for (Runnable throwingAction : throwingActions) {
1660	>	boolean threw = false;
1661	>	try { throwingAction.run(); }
1662	>	catch (Throwable t) {
1663	>	threw = true;
1664	>	if (!expectedExceptionClass.isInstance(t)) {
1665	>	AssertionFailedError afe =
1666	>	new AssertionFailedError
1667	>	("Expected " + expectedExceptionClass.getName() +
1668	>	", got " + t.getClass().getName());
1669	>	afe.initCause(t);
1670	>	threadUnexpectedException(afe);
1671	>	}
1672		}
1673	+	if (!threw)
1674	+	shouldThrow(expectedExceptionClass.getName());
1675		}
1676		}
1677	<
1677	>
1678	>	public void assertIteratorExhausted(Iterator<?> it) {
1679	>	try {
1680	>	it.next();
1681	>	shouldThrow();
1682	>	} catch (NoSuchElementException success) {}
1683	>	assertFalse(it.hasNext());
1684	>	}
1685		}

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