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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.1 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.146 by jsr166, Fri Sep 25 23:32:15 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.*;
10	<	import java.util.concurrent.*;
11	<	import java.io.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11
12	+	import java.io.ByteArrayInputStream;
13	+	import java.io.ByteArrayOutputStream;
14	+	import java.io.ObjectInputStream;
15	+	import java.io.ObjectOutputStream;
16	+	import java.lang.management.ManagementFactory;
17	+	import java.lang.management.ThreadInfo;
18	+	import java.lang.reflect.Constructor;
19	+	import java.lang.reflect.Method;
20	+	import java.lang.reflect.Modifier;
21	+	import java.security.CodeSource;
22	+	import java.security.Permission;
23	+	import java.security.PermissionCollection;
24	+	import java.security.Permissions;
25	+	import java.security.Policy;
26	+	import java.security.ProtectionDomain;
27	+	import java.security.SecurityPermission;
28	+	import java.util.ArrayList;
29	+	import java.util.Arrays;
30	+	import java.util.Date;
31	+	import java.util.Enumeration;
32	+	import java.util.Iterator;
33	+	import java.util.List;
34	+	import java.util.NoSuchElementException;
35	+	import java.util.PropertyPermission;
36	+	import java.util.concurrent.BlockingQueue;
37	+	import java.util.concurrent.Callable;
38	+	import java.util.concurrent.CountDownLatch;
39	+	import java.util.concurrent.CyclicBarrier;
40	+	import java.util.concurrent.ExecutionException;
41	+	import java.util.concurrent.Executors;
42	+	import java.util.concurrent.ExecutorService;
43	+	import java.util.concurrent.ForkJoinPool;
44	+	import java.util.concurrent.Future;
45	+	import java.util.concurrent.RecursiveAction;
46	+	import java.util.concurrent.RecursiveTask;
47	+	import java.util.concurrent.RejectedExecutionHandler;
48	+	import java.util.concurrent.Semaphore;
49	+	import java.util.concurrent.ThreadFactory;
50	+	import java.util.concurrent.ThreadPoolExecutor;
51	+	import java.util.concurrent.TimeoutException;
52	+	import java.util.concurrent.atomic.AtomicReference;
53	+	import java.util.regex.Pattern;
54	+
55	+	import junit.framework.AssertionFailedError;
56	+	import junit.framework.Test;
57	+	import junit.framework.TestCase;
58	+	import junit.framework.TestResult;
59	+	import junit.framework.TestSuite;
60
61		/**
62	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
63	<	* utility methods, as well as a simple framework for helping to make
64	<	* sure that assertions failing in generated threads cause the
65	<	* associated test that generated them to itself fail (which JUnit doe
66	<	* not otherwise arrange).  The rules for creating such tests are:
62	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
63	>	* utility methods and classes, as well as a simple framework for
64	>	* helping to make sure that assertions failing in generated threads
65	>	* cause the associated test that generated them to itself fail (which
66	>	* JUnit does not otherwise arrange).  The rules for creating such
67	>	* tests are:
68		*
69		* <ol>
70		*
71	<	* <li> All assertions in code running in generated threads must use
72	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
73	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
74	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
71	>	* <li>All assertions in code running in generated threads must use
72	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
73	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
74	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
75		* particularly recommended) for other code to use these forms too.
76		* Only the most typically used JUnit assertion methods are defined
77	<	* this way, but enough to live with.</li>
77	>	* this way, but enough to live with.
78		*
79	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
80	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
79	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
80	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
81		* them. These methods are used to clear and check for thread
82	<	* assertion failures.</li>
82	>	* assertion failures.
83		*
84	<	* <li>All delays and timeouts must use one of the constants {@link
85	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
86	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
87	<	* discriminatable from zero time, and always allows enough time for
88	<	* the small amounts of computation (creating a thread, calling a few
84	>	* <li>All delays and timeouts must use one of the constants {@code
85	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
86	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
87	>	* discriminable from zero time, and always allows enough time for the
88	>	* small amounts of computation (creating a thread, calling a few
89		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
90		* is always discriminable as larger than SHORT and smaller than
91		* MEDIUM.  And so on. These constants are set to conservative values,
92	<	* (100, 500, 1000, 5000 MS) but even so, if there is ever any doubt,
93	<	* they can all be increased in one spot to rerun tests on slower
94	<	* platforms</li>
95	<	*
96	<	* <li> All threads generated must be joined inside each test case
97	<	* method (or <tt>fail</tt> to do so) before returning from the
98	<	* method. The {@link joinPool} method can be used to do this when
51	<	* using Executors.</li>
92	>	* but even so, if there is ever any doubt, they can all be increased
93	>	* in one spot to rerun tests on slower platforms.
94	>	*
95	>	* <li>All threads generated must be joined inside each test case
96	>	* method (or {@code fail} to do so) before returning from the
97	>	* method. The {@code joinPool} method can be used to do this when
98	>	* using Executors.
99		*
100		* </ol>
101	+	*
102	+	* <p><b>Other notes</b>
103	+	* <ul>
104	+	*
105	+	* <li>Usually, there is one testcase method per JSR166 method
106	+	* covering "normal" operation, and then as many exception-testing
107	+	* methods as there are exceptions the method can throw. Sometimes
108	+	* there are multiple tests per JSR166 method when the different
109	+	* "normal" behaviors differ significantly. And sometimes testcases
110	+	* cover multiple methods when they cannot be tested in
111	+	* isolation.
112	+	*
113	+	* <li>The documentation style for testcases is to provide as javadoc
114	+	* a simple sentence or two describing the property that the testcase
115	+	* method purports to test. The javadocs do not say anything about how
116	+	* the property is tested. To find out, read the code.
117	+	*
118	+	* <li>These tests are "conformance tests", and do not attempt to
119	+	* test throughput, latency, scalability or other performance factors
120	+	* (see the separate "jtreg" tests for a set intended to check these
121	+	* for the most central aspects of functionality.) So, most tests use
122	+	* the smallest sensible numbers of threads, collection sizes, etc
123	+	* needed to check basic conformance.
124	+	*
125	+	* <li>The test classes currently do not declare inclusion in
126	+	* any particular package to simplify things for people integrating
127	+	* them in TCK test suites.
128	+	*
129	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
130	+	* runs all JSR166 unit tests.
131	+	*
132	+	* </ul>
133		*/
134		public class JSR166TestCase extends TestCase {
135	+	private static final boolean useSecurityManager =
136	+	Boolean.getBoolean("jsr166.useSecurityManager");
137	+
138	+	protected static final boolean expensiveTests =
139	+	Boolean.getBoolean("jsr166.expensiveTests");
140	+
141	+	/**
142	+	* If true, also run tests that are not part of the official tck
143	+	* because they test unspecified implementation details.
144	+	*/
145	+	protected static final boolean testImplementationDetails =
146	+	Boolean.getBoolean("jsr166.testImplementationDetails");
147	+
148	+	/**
149	+	* If true, report on stdout all "slow" tests, that is, ones that
150	+	* take more than profileThreshold milliseconds to execute.
151	+	*/
152	+	private static final boolean profileTests =
153	+	Boolean.getBoolean("jsr166.profileTests");
154	+
155	+	/**
156	+	* The number of milliseconds that tests are permitted for
157	+	* execution without being reported, when profileTests is set.
158	+	*/
159	+	private static final long profileThreshold =
160	+	Long.getLong("jsr166.profileThreshold", 100);
161	+
162	+	/**
163	+	* The number of repetitions per test (for tickling rare bugs).
164	+	*/
165	+	private static final int runsPerTest =
166	+	Integer.getInteger("jsr166.runsPerTest", 1);
167	+
168	+	/**
169	+	* The number of repetitions of the test suite (for finding leaks?).
170	+	*/
171	+	private static final int suiteRuns =
172	+	Integer.getInteger("jsr166.suiteRuns", 1);
173	+
174	+	public JSR166TestCase() { super(); }
175	+	public JSR166TestCase(String name) { super(name); }
176	+
177	+	/**
178	+	* A filter for tests to run, matching strings of the form
179	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
180	+	* Usefully combined with jsr166.runsPerTest.
181	+	*/
182	+	private static final Pattern methodFilter = methodFilter();
183	+
184	+	private static Pattern methodFilter() {
185	+	String regex = System.getProperty("jsr166.methodFilter");
186	+	return (regex == null) ? null : Pattern.compile(regex);
187	+	}
188	+
189	+	protected void runTest() throws Throwable {
190	+	if (methodFilter == null
191	+	|| methodFilter.matcher(toString()).find()) {
192	+	for (int i = 0; i < runsPerTest; i++) {
193	+	if (profileTests)
194	+	runTestProfiled();
195	+	else
196	+	super.runTest();
197	+	}
198	+	}
199	+	}
200	+
201	+	protected void runTestProfiled() throws Throwable {
202	+	for (int i = 0; i < 2; i++) {
203	+	long startTime = System.nanoTime();
204	+	super.runTest();
205	+	long elapsedMillis = millisElapsedSince(startTime);
206	+	if (elapsedMillis < profileThreshold)
207	+	break;
208	+	// Never report first run of any test; treat it as a
209	+	// warmup run, notably to trigger all needed classloading,
210	+	if (i > 0)
211	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
212	+	}
213	+	}
214	+
215	+	/**
216	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
217	+	*/
218	+	public static void main(String[] args) {
219	+	main(suite(), args);
220	+	}
221	+
222	+	/**
223	+	* Runs all unit tests in the given test suite.
224	+	* Actual behavior influenced by jsr166.* system properties.
225	+	*/
226	+	static void main(Test suite, String[] args) {
227	+	if (useSecurityManager) {
228	+	System.err.println("Setting a permissive security manager");
229	+	Policy.setPolicy(permissivePolicy());
230	+	System.setSecurityManager(new SecurityManager());
231	+	}
232	+	for (int i = 0; i < suiteRuns; i++) {
233	+	TestResult result = junit.textui.TestRunner.run(suite);
234	+	if (!result.wasSuccessful())
235	+	System.exit(1);
236	+	System.gc();
237	+	System.runFinalization();
238	+	}
239	+	}
240	+
241	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
242	+	TestSuite suite = new TestSuite();
243	+	for (Object suiteOrClass : suiteOrClasses) {
244	+	if (suiteOrClass instanceof TestSuite)
245	+	suite.addTest((TestSuite) suiteOrClass);
246	+	else if (suiteOrClass instanceof Class)
247	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
248	+	else
249	+	throw new ClassCastException("not a test suite or class");
250	+	}
251	+	return suite;
252	+	}
253	+
254	+	public static void addNamedTestClasses(TestSuite suite,
255	+	String... testClassNames) {
256	+	for (String testClassName : testClassNames) {
257	+	try {
258	+	Class<?> testClass = Class.forName(testClassName);
259	+	Method m = testClass.getDeclaredMethod("suite",
260	+	new Class<?>[0]);
261	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
262	+	} catch (Exception e) {
263	+	throw new Error("Missing test class", e);
264	+	}
265	+	}
266	+	}
267	+
268	+	public static final double JAVA_CLASS_VERSION;
269	+	public static final String JAVA_SPECIFICATION_VERSION;
270	+	static {
271	+	try {
272	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
273	+	new java.security.PrivilegedAction<Double>() {
274	+	public Double run() {
275	+	return Double.valueOf(System.getProperty("java.class.version"));}});
276	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
277	+	new java.security.PrivilegedAction<String>() {
278	+	public String run() {
279	+	return System.getProperty("java.specification.version");}});
280	+	} catch (Throwable t) {
281	+	throw new Error(t);
282	+	}
283	+	}
284	+
285	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
286	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
287	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
288	+	public static boolean atLeastJava9() {
289	+	return JAVA_CLASS_VERSION >= 53.0
290	+	// As of 2015-09, java9 still uses 52.0 class file version
291	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
292	+	}
293	+	public static boolean atLeastJava10() {
294	+	return JAVA_CLASS_VERSION >= 54.0
295	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
296	+	}
297	+
298	+	/**
299	+	* Collects all JSR166 unit tests as one suite.
300	+	*/
301	+	public static Test suite() {
302	+	// Java7+ test classes
303	+	TestSuite suite = newTestSuite(
304	+	ForkJoinPoolTest.suite(),
305	+	ForkJoinTaskTest.suite(),
306	+	RecursiveActionTest.suite(),
307	+	RecursiveTaskTest.suite(),
308	+	LinkedTransferQueueTest.suite(),
309	+	PhaserTest.suite(),
310	+	ThreadLocalRandomTest.suite(),
311	+	AbstractExecutorServiceTest.suite(),
312	+	AbstractQueueTest.suite(),
313	+	AbstractQueuedSynchronizerTest.suite(),
314	+	AbstractQueuedLongSynchronizerTest.suite(),
315	+	ArrayBlockingQueueTest.suite(),
316	+	ArrayDequeTest.suite(),
317	+	AtomicBooleanTest.suite(),
318	+	AtomicIntegerArrayTest.suite(),
319	+	AtomicIntegerFieldUpdaterTest.suite(),
320	+	AtomicIntegerTest.suite(),
321	+	AtomicLongArrayTest.suite(),
322	+	AtomicLongFieldUpdaterTest.suite(),
323	+	AtomicLongTest.suite(),
324	+	AtomicMarkableReferenceTest.suite(),
325	+	AtomicReferenceArrayTest.suite(),
326	+	AtomicReferenceFieldUpdaterTest.suite(),
327	+	AtomicReferenceTest.suite(),
328	+	AtomicStampedReferenceTest.suite(),
329	+	ConcurrentHashMapTest.suite(),
330	+	ConcurrentLinkedDequeTest.suite(),
331	+	ConcurrentLinkedQueueTest.suite(),
332	+	ConcurrentSkipListMapTest.suite(),
333	+	ConcurrentSkipListSubMapTest.suite(),
334	+	ConcurrentSkipListSetTest.suite(),
335	+	ConcurrentSkipListSubSetTest.suite(),
336	+	CopyOnWriteArrayListTest.suite(),
337	+	CopyOnWriteArraySetTest.suite(),
338	+	CountDownLatchTest.suite(),
339	+	CyclicBarrierTest.suite(),
340	+	DelayQueueTest.suite(),
341	+	EntryTest.suite(),
342	+	ExchangerTest.suite(),
343	+	ExecutorsTest.suite(),
344	+	ExecutorCompletionServiceTest.suite(),
345	+	FutureTaskTest.suite(),
346	+	LinkedBlockingDequeTest.suite(),
347	+	LinkedBlockingQueueTest.suite(),
348	+	LinkedListTest.suite(),
349	+	LockSupportTest.suite(),
350	+	PriorityBlockingQueueTest.suite(),
351	+	PriorityQueueTest.suite(),
352	+	ReentrantLockTest.suite(),
353	+	ReentrantReadWriteLockTest.suite(),
354	+	ScheduledExecutorTest.suite(),
355	+	ScheduledExecutorSubclassTest.suite(),
356	+	SemaphoreTest.suite(),
357	+	SynchronousQueueTest.suite(),
358	+	SystemTest.suite(),
359	+	ThreadLocalTest.suite(),
360	+	ThreadPoolExecutorTest.suite(),
361	+	ThreadPoolExecutorSubclassTest.suite(),
362	+	ThreadTest.suite(),
363	+	TimeUnitTest.suite(),
364	+	TreeMapTest.suite(),
365	+	TreeSetTest.suite(),
366	+	TreeSubMapTest.suite(),
367	+	TreeSubSetTest.suite());
368	+
369	+	// Java8+ test classes
370	+	if (atLeastJava8()) {
371	+	String[] java8TestClassNames = {
372	+	"Atomic8Test",
373	+	"CompletableFutureTest",
374	+	"ConcurrentHashMap8Test",
375	+	"CountedCompleterTest",
376	+	"DoubleAccumulatorTest",
377	+	"DoubleAdderTest",
378	+	"ForkJoinPool8Test",
379	+	"ForkJoinTask8Test",
380	+	"LongAccumulatorTest",
381	+	"LongAdderTest",
382	+	"SplittableRandomTest",
383	+	"StampedLockTest",
384	+	"SubmissionPublisherTest",
385	+	"ThreadLocalRandom8Test",
386	+	};
387	+	addNamedTestClasses(suite, java8TestClassNames);
388	+	}
389	+
390	+	// Java9+ test classes
391	+	if (atLeastJava9()) {
392	+	String[] java9TestClassNames = {
393	+	// Currently empty, but expecting varhandle tests
394	+	};
395	+	addNamedTestClasses(suite, java9TestClassNames);
396	+	}
397	+
398	+	return suite;
399	+	}
400	+
401	+	/** Returns list of junit-style test method names in given class. */
402	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
403	+	Method[] methods = testClass.getDeclaredMethods();
404	+	ArrayList<String> names = new ArrayList<String>(methods.length);
405	+	for (Method method : methods) {
406	+	if (method.getName().startsWith("test")
407	+	&& Modifier.isPublic(method.getModifiers())
408	+	// method.getParameterCount() requires jdk8+
409	+	&& method.getParameterTypes().length == 0) {
410	+	names.add(method.getName());
411	+	}
412	+	}
413	+	return names;
414	+	}
415	+
416	+	/**
417	+	* Returns junit-style testSuite for the given test class, but
418	+	* parameterized by passing extra data to each test.
419	+	*/
420	+	public static <ExtraData> Test parameterizedTestSuite
421	+	(Class<? extends JSR166TestCase> testClass,
422	+	Class<ExtraData> dataClass,
423	+	ExtraData data) {
424	+	try {
425	+	TestSuite suite = new TestSuite();
426	+	Constructor c =
427	+	testClass.getDeclaredConstructor(dataClass, String.class);
428	+	for (String methodName : testMethodNames(testClass))
429	+	suite.addTest((Test) c.newInstance(data, methodName));
430	+	return suite;
431	+	} catch (Exception e) {
432	+	throw new Error(e);
433	+	}
434	+	}
435	+
436	+	/**
437	+	* Returns junit-style testSuite for the jdk8 extension of the
438	+	* given test class, but parameterized by passing extra data to
439	+	* each test.  Uses reflection to allow compilation in jdk7.
440	+	*/
441	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
442	+	(Class<? extends JSR166TestCase> testClass,
443	+	Class<ExtraData> dataClass,
444	+	ExtraData data) {
445	+	if (atLeastJava8()) {
446	+	String name = testClass.getName();
447	+	String name8 = name.replaceAll("Test$", "8Test");
448	+	if (name.equals(name8)) throw new Error(name);
449	+	try {
450	+	return (Test)
451	+	Class.forName(name8)
452	+	.getMethod("testSuite", new Class[] { dataClass })
453	+	.invoke(null, data);
454	+	} catch (Exception e) {
455	+	throw new Error(e);
456	+	}
457	+	} else {
458	+	return new TestSuite();
459	+	}
460	+
461	+	}
462	+
463	+	// Delays for timing-dependent tests, in milliseconds.
464	+
465	+	public static long SHORT_DELAY_MS;
466	+	public static long SMALL_DELAY_MS;
467	+	public static long MEDIUM_DELAY_MS;
468	+	public static long LONG_DELAY_MS;
469	+
470	+	/**
471	+	* Returns the shortest timed delay. This could
472	+	* be reimplemented to use for example a Property.
473	+	*/
474	+	protected long getShortDelay() {
475	+	return 50;
476	+	}
477	+
478	+	/**
479	+	* Sets delays as multiples of SHORT_DELAY.
480	+	*/
481	+	protected void setDelays() {
482	+	SHORT_DELAY_MS = getShortDelay();
483	+	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
484	+	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
485	+	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
486	+	}
487
488		/**
489	<	* Flag set true if any threadAssert methods fail
489	>	* Returns a timeout in milliseconds to be used in tests that
490	>	* verify that operations block or time out.
491		*/
492	<	protected volatile boolean threadFailed;
492	>	long timeoutMillis() {
493	>	return SHORT_DELAY_MS / 4;
494	>	}
495	>
496	>	/**
497	>	* Returns a new Date instance representing a time at least
498	>	* delayMillis milliseconds in the future.
499	>	*/
500	>	Date delayedDate(long delayMillis) {
501	>	// Add 1 because currentTimeMillis is known to round into the past.
502	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
503	>	}
504	>
505	>	/**
506	>	* The first exception encountered if any threadAssertXXX method fails.
507	>	*/
508	>	private final AtomicReference<Throwable> threadFailure
509	>	= new AtomicReference<Throwable>(null);
510	>
511	>	/**
512	>	* Records an exception so that it can be rethrown later in the test
513	>	* harness thread, triggering a test case failure.  Only the first
514	>	* failure is recorded; subsequent calls to this method from within
515	>	* the same test have no effect.
516	>	*/
517	>	public void threadRecordFailure(Throwable t) {
518	>	threadFailure.compareAndSet(null, t);
519	>	}
520	>
521	>	public void setUp() {
522	>	setDelays();
523	>	}
524	>
525	>	void tearDownFail(String format, Object... args) {
526	>	String msg = toString() + ": " + String.format(format, args);
527	>	System.err.println(msg);
528	>	printAllStackTraces();
529	>	throw new AssertionFailedError(msg);
530	>	}
531
532		/**
533	<	* Initialize test to indicat that no thread assertions have failed
533	>	* Extra checks that get done for all test cases.
534	>	*
535	>	* Triggers test case failure if any thread assertions have failed,
536	>	* by rethrowing, in the test harness thread, any exception recorded
537	>	* earlier by threadRecordFailure.
538	>	*
539	>	* Triggers test case failure if interrupt status is set in the main thread.
540		*/
541	<	public void setUp() {
542	<	threadFailed = false;
541	>	public void tearDown() throws Exception {
542	>	Throwable t = threadFailure.getAndSet(null);
543	>	if (t != null) {
544	>	if (t instanceof Error)
545	>	throw (Error) t;
546	>	else if (t instanceof RuntimeException)
547	>	throw (RuntimeException) t;
548	>	else if (t instanceof Exception)
549	>	throw (Exception) t;
550	>	else {
551	>	AssertionFailedError afe =
552	>	new AssertionFailedError(t.toString());
553	>	afe.initCause(t);
554	>	throw afe;
555	>	}
556	>	}
557	>
558	>	if (Thread.interrupted())
559	>	tearDownFail("interrupt status set in main thread");
560	>
561	>	checkForkJoinPoolThreadLeaks();
562		}
563
564		/**
565	<	* Trigger test case failure if any thread assertions have failed
565	>	* Finds missing try { ... } finally { joinPool(e); }
566		*/
567	<	public void tearDown() {
568	<	assertFalse(threadFailed);
567	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
568	>	Thread[] survivors = new Thread[7];
569	>	int count = Thread.enumerate(survivors);
570	>	for (int i = 0; i < count; i++) {
571	>	Thread thread = survivors[i];
572	>	String name = thread.getName();
573	>	if (name.startsWith("ForkJoinPool-")) {
574	>	// give thread some time to terminate
575	>	thread.join(LONG_DELAY_MS);
576	>	if (thread.isAlive())
577	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
578	>	thread);
579	>	}
580	>	}
581	>
582	>	if (!ForkJoinPool.commonPool()
583	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
584	>	tearDownFail("ForkJoin common pool thread stuck");
585		}
586
587	+	/**
588	+	* Just like fail(reason), but additionally recording (using
589	+	* threadRecordFailure) any AssertionFailedError thrown, so that
590	+	* the current testcase will fail.
591	+	*/
592		public void threadFail(String reason) {
593	<	threadFailed = true;
594	<	fail(reason);
593	>	try {
594	>	fail(reason);
595	>	} catch (AssertionFailedError t) {
596	>	threadRecordFailure(t);
597	>	fail(reason);
598	>	}
599		}
600
601	+	/**
602	+	* Just like assertTrue(b), but additionally recording (using
603	+	* threadRecordFailure) any AssertionFailedError thrown, so that
604	+	* the current testcase will fail.
605	+	*/
606		public void threadAssertTrue(boolean b) {
607	<	if (!b) {
83	<	threadFailed = true;
607	>	try {
608		assertTrue(b);
609	+	} catch (AssertionFailedError t) {
610	+	threadRecordFailure(t);
611	+	throw t;
612		}
613		}
614	+
615	+	/**
616	+	* Just like assertFalse(b), but additionally recording (using
617	+	* threadRecordFailure) any AssertionFailedError thrown, so that
618	+	* the current testcase will fail.
619	+	*/
620		public void threadAssertFalse(boolean b) {
621	<	if (b) {
89	<	threadFailed = true;
621	>	try {
622		assertFalse(b);
623	+	} catch (AssertionFailedError t) {
624	+	threadRecordFailure(t);
625	+	throw t;
626		}
627		}
628	+
629	+	/**
630	+	* Just like assertNull(x), but additionally recording (using
631	+	* threadRecordFailure) any AssertionFailedError thrown, so that
632	+	* the current testcase will fail.
633	+	*/
634		public void threadAssertNull(Object x) {
635	<	if (x != null) {
95	<	threadFailed = true;
635	>	try {
636		assertNull(x);
637	+	} catch (AssertionFailedError t) {
638	+	threadRecordFailure(t);
639	+	throw t;
640		}
641		}
642	+
643	+	/**
644	+	* Just like assertEquals(x, y), but additionally recording (using
645	+	* threadRecordFailure) any AssertionFailedError thrown, so that
646	+	* the current testcase will fail.
647	+	*/
648		public void threadAssertEquals(long x, long y) {
649	<	if (x != y) {
101	<	threadFailed = true;
649	>	try {
650		assertEquals(x, y);
651	+	} catch (AssertionFailedError t) {
652	+	threadRecordFailure(t);
653	+	throw t;
654		}
655		}
656	+
657	+	/**
658	+	* Just like assertEquals(x, y), but additionally recording (using
659	+	* threadRecordFailure) any AssertionFailedError thrown, so that
660	+	* the current testcase will fail.
661	+	*/
662		public void threadAssertEquals(Object x, Object y) {
663	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
663	>	try {
664		assertEquals(x, y);
665	+	} catch (AssertionFailedError fail) {
666	+	threadRecordFailure(fail);
667	+	throw fail;
668	+	} catch (Throwable fail) {
669	+	threadUnexpectedException(fail);
670	+	}
671	+	}
672	+
673	+	/**
674	+	* Just like assertSame(x, y), but additionally recording (using
675	+	* threadRecordFailure) any AssertionFailedError thrown, so that
676	+	* the current testcase will fail.
677	+	*/
678	+	public void threadAssertSame(Object x, Object y) {
679	+	try {
680	+	assertSame(x, y);
681	+	} catch (AssertionFailedError fail) {
682	+	threadRecordFailure(fail);
683	+	throw fail;
684	+	}
685	+	}
686	+
687	+	/**
688	+	* Calls threadFail with message "should throw exception".
689	+	*/
690	+	public void threadShouldThrow() {
691	+	threadFail("should throw exception");
692	+	}
693	+
694	+	/**
695	+	* Calls threadFail with message "should throw" + exceptionName.
696	+	*/
697	+	public void threadShouldThrow(String exceptionName) {
698	+	threadFail("should throw " + exceptionName);
699	+	}
700	+
701	+	/**
702	+	* Records the given exception using {@link #threadRecordFailure},
703	+	* then rethrows the exception, wrapping it in an
704	+	* AssertionFailedError if necessary.
705	+	*/
706	+	public void threadUnexpectedException(Throwable t) {
707	+	threadRecordFailure(t);
708	+	t.printStackTrace();
709	+	if (t instanceof RuntimeException)
710	+	throw (RuntimeException) t;
711	+	else if (t instanceof Error)
712	+	throw (Error) t;
713	+	else {
714	+	AssertionFailedError afe =
715	+	new AssertionFailedError("unexpected exception: " + t);
716	+	afe.initCause(t);
717	+	throw afe;
718	+	}
719	+	}
720	+
721	+	/**
722	+	* Delays, via Thread.sleep, for the given millisecond delay, but
723	+	* if the sleep is shorter than specified, may re-sleep or yield
724	+	* until time elapses.
725	+	*/
726	+	static void delay(long millis) throws InterruptedException {
727	+	long startTime = System.nanoTime();
728	+	long ns = millis * 1000 * 1000;
729	+	for (;;) {
730	+	if (millis > 0L)
731	+	Thread.sleep(millis);
732	+	else // too short to sleep
733	+	Thread.yield();
734	+	long d = ns - (System.nanoTime() - startTime);
735	+	if (d > 0L)
736	+	millis = d / (1000 * 1000);
737	+	else
738	+	break;
739		}
740		}
741
742		/**
743	<	* Wait out termination of a thread pool or fail doing so
743	>	* Waits out termination of a thread pool or fails doing so.
744		*/
745	<	public void joinPool(ExecutorService exec) {
745	>	void joinPool(ExecutorService pool) {
746		try {
747	<	exec.shutdown();
748	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
749	<	} catch(InterruptedException ie) {
750	<	fail("unexpected exception");
747	>	pool.shutdown();
748	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
749	>	fail("ExecutorService " + pool +
750	>	" did not terminate in a timely manner");
751	>	} catch (SecurityException ok) {
752	>	// Allowed in case test doesn't have privs
753	>	} catch (InterruptedException fail) {
754	>	fail("Unexpected InterruptedException");
755		}
756		}
757
758	<	public static final long SHORT_DELAY_MS =   100;
759	<	public static final long SMALL_DELAY_MS =   500;
126	<	public static final long MEDIUM_DELAY_MS = 1000;
127	<	public static final long LONG_DELAY_MS =   5000;
758	>	/** Like Runnable, but with the freedom to throw anything */
759	>	interface Action { public void run() throws Throwable; }
760
761	+	/**
762	+	* Runs all the given actions in parallel, failing if any fail.
763	+	* Useful for running multiple variants of tests that are
764	+	* necessarily individually slow because they must block.
765	+	*/
766	+	void testInParallel(Action ... actions) {
767	+	ExecutorService pool = Executors.newCachedThreadPool();
768	+	try {
769	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
770	+	for (final Action action : actions)
771	+	futures.add(pool.submit(new CheckedRunnable() {
772	+	public void realRun() throws Throwable { action.run();}}));
773	+	for (Future<?> future : futures)
774	+	try {
775	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
776	+	} catch (ExecutionException ex) {
777	+	threadUnexpectedException(ex.getCause());
778	+	} catch (Exception ex) {
779	+	threadUnexpectedException(ex);
780	+	}
781	+	} finally {
782	+	joinPool(pool);
783	+	}
784	+	}
785	+
786	+	/**
787	+	* A debugging tool to print all stack traces, as jstack does.
788	+	*/
789	+	static void printAllStackTraces() {
790	+	for (ThreadInfo info :
791	+	ManagementFactory.getThreadMXBean()
792	+	.dumpAllThreads(true, true))
793	+	System.err.print(info);
794	+	}
795	+
796	+	/**
797	+	* Checks that thread does not terminate within the default
798	+	* millisecond delay of {@code timeoutMillis()}.
799	+	*/
800	+	void assertThreadStaysAlive(Thread thread) {
801	+	assertThreadStaysAlive(thread, timeoutMillis());
802	+	}
803	+
804	+	/**
805	+	* Checks that thread does not terminate within the given millisecond delay.
806	+	*/
807	+	void assertThreadStaysAlive(Thread thread, long millis) {
808	+	try {
809	+	// No need to optimize the failing case via Thread.join.
810	+	delay(millis);
811	+	assertTrue(thread.isAlive());
812	+	} catch (InterruptedException fail) {
813	+	fail("Unexpected InterruptedException");
814	+	}
815	+	}
816	+
817	+	/**
818	+	* Checks that the threads do not terminate within the default
819	+	* millisecond delay of {@code timeoutMillis()}.
820	+	*/
821	+	void assertThreadsStayAlive(Thread... threads) {
822	+	assertThreadsStayAlive(timeoutMillis(), threads);
823	+	}
824	+
825	+	/**
826	+	* Checks that the threads do not terminate within the given millisecond delay.
827	+	*/
828	+	void assertThreadsStayAlive(long millis, Thread... threads) {
829	+	try {
830	+	// No need to optimize the failing case via Thread.join.
831	+	delay(millis);
832	+	for (Thread thread : threads)
833	+	assertTrue(thread.isAlive());
834	+	} catch (InterruptedException fail) {
835	+	fail("Unexpected InterruptedException");
836	+	}
837	+	}
838	+
839	+	/**
840	+	* Checks that future.get times out, with the default timeout of
841	+	* {@code timeoutMillis()}.
842	+	*/
843	+	void assertFutureTimesOut(Future future) {
844	+	assertFutureTimesOut(future, timeoutMillis());
845	+	}
846	+
847	+	/**
848	+	* Checks that future.get times out, with the given millisecond timeout.
849	+	*/
850	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
851	+	long startTime = System.nanoTime();
852	+	try {
853	+	future.get(timeoutMillis, MILLISECONDS);
854	+	shouldThrow();
855	+	} catch (TimeoutException success) {
856	+	} catch (Exception fail) {
857	+	threadUnexpectedException(fail);
858	+	} finally { future.cancel(true); }
859	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
860	+	}
861	+
862	+	/**
863	+	* Fails with message "should throw exception".
864	+	*/
865	+	public void shouldThrow() {
866	+	fail("Should throw exception");
867	+	}
868	+
869	+	/**
870	+	* Fails with message "should throw " + exceptionName.
871	+	*/
872	+	public void shouldThrow(String exceptionName) {
873	+	fail("Should throw " + exceptionName);
874	+	}
875
876		/**
877		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 880 | public class JSR166TestCase extends Test
880
881		// Some convenient Integer constants
882
883	<	public static final Integer zero = new Integer(0);
884	<	public static final Integer one = new Integer(1);
885	<	public static final Integer two = new Integer(2);
886	<	public static final Integer three  = new Integer(3);
883	>	public static final Integer zero  = new Integer(0);
884	>	public static final Integer one   = new Integer(1);
885	>	public static final Integer two   = new Integer(2);
886	>	public static final Integer three = new Integer(3);
887		public static final Integer four  = new Integer(4);
888		public static final Integer five  = new Integer(5);
889	<	public static final Integer six = new Integer(6);
889	>	public static final Integer six   = new Integer(6);
890		public static final Integer seven = new Integer(7);
891		public static final Integer eight = new Integer(8);
892	<	public static final Integer nine = new Integer(9);
892	>	public static final Integer nine  = new Integer(9);
893		public static final Integer m1  = new Integer(-1);
894		public static final Integer m2  = new Integer(-2);
895		public static final Integer m3  = new Integer(-3);
896	<	public static final Integer m4 = new Integer(-4);
897	<	public static final Integer m5 = new Integer(-5);
896	>	public static final Integer m4  = new Integer(-4);
897	>	public static final Integer m5  = new Integer(-5);
898	>	public static final Integer m6  = new Integer(-6);
899		public static final Integer m10 = new Integer(-10);
900
901	+	/**
902	+	* Runs Runnable r with a security policy that permits precisely
903	+	* the specified permissions.  If there is no current security
904	+	* manager, the runnable is run twice, both with and without a
905	+	* security manager.  We require that any security manager permit
906	+	* getPolicy/setPolicy.
907	+	*/
908	+	public void runWithPermissions(Runnable r, Permission... permissions) {
909	+	SecurityManager sm = System.getSecurityManager();
910	+	if (sm == null) {
911	+	r.run();
912	+	}
913	+	runWithSecurityManagerWithPermissions(r, permissions);
914	+	}
915
916	<	// Some convenient Runnable classes
916	>	/**
917	>	* Runs Runnable r with a security policy that permits precisely
918	>	* the specified permissions.  If there is no current security
919	>	* manager, a temporary one is set for the duration of the
920	>	* Runnable.  We require that any security manager permit
921	>	* getPolicy/setPolicy.
922	>	*/
923	>	public void runWithSecurityManagerWithPermissions(Runnable r,
924	>	Permission... permissions) {
925	>	SecurityManager sm = System.getSecurityManager();
926	>	if (sm == null) {
927	>	Policy savedPolicy = Policy.getPolicy();
928	>	try {
929	>	Policy.setPolicy(permissivePolicy());
930	>	System.setSecurityManager(new SecurityManager());
931	>	runWithSecurityManagerWithPermissions(r, permissions);
932	>	} finally {
933	>	System.setSecurityManager(null);
934	>	Policy.setPolicy(savedPolicy);
935	>	}
936	>	} else {
937	>	Policy savedPolicy = Policy.getPolicy();
938	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
939	>	Policy.setPolicy(policy);
940
941	<	public static class NoOpRunnable implements Runnable {
942	<	public void run() {}
941	>	try {
942	>	r.run();
943	>	} finally {
944	>	policy.addPermission(new SecurityPermission("setPolicy"));
945	>	Policy.setPolicy(savedPolicy);
946	>	}
947	>	}
948		}
949
950	<	public static class NoOpCallable implements Callable {
951	<	public Object call() { return Boolean.TRUE; }
950	>	/**
951	>	* Runs a runnable without any permissions.
952	>	*/
953	>	public void runWithoutPermissions(Runnable r) {
954	>	runWithPermissions(r);
955		}
956
957	<	public class ShortRunnable implements Runnable {
958	<	public void run() {
959	<	try {
960	<	Thread.sleep(SHORT_DELAY_MS);
957	>	/**
958	>	* A security policy where new permissions can be dynamically added
959	>	* or all cleared.
960	>	*/
961	>	public static class AdjustablePolicy extends java.security.Policy {
962	>	Permissions perms = new Permissions();
963	>	AdjustablePolicy(Permission... permissions) {
964	>	for (Permission permission : permissions)
965	>	perms.add(permission);
966	>	}
967	>	void addPermission(Permission perm) { perms.add(perm); }
968	>	void clearPermissions() { perms = new Permissions(); }
969	>	public PermissionCollection getPermissions(CodeSource cs) {
970	>	return perms;
971	>	}
972	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
973	>	return perms;
974	>	}
975	>	public boolean implies(ProtectionDomain pd, Permission p) {
976	>	return perms.implies(p);
977	>	}
978	>	public void refresh() {}
979	>	public String toString() {
980	>	List<Permission> ps = new ArrayList<Permission>();
981	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
982	>	ps.add(e.nextElement());
983	>	return "AdjustablePolicy with permissions " + ps;
984	>	}
985	>	}
986	>
987	>	/**
988	>	* Returns a policy containing all the permissions we ever need.
989	>	*/
990	>	public static Policy permissivePolicy() {
991	>	return new AdjustablePolicy
992	>	// Permissions j.u.c. needs directly
993	>	(new RuntimePermission("modifyThread"),
994	>	new RuntimePermission("getClassLoader"),
995	>	new RuntimePermission("setContextClassLoader"),
996	>	// Permissions needed to change permissions!
997	>	new SecurityPermission("getPolicy"),
998	>	new SecurityPermission("setPolicy"),
999	>	new RuntimePermission("setSecurityManager"),
1000	>	// Permissions needed by the junit test harness
1001	>	new RuntimePermission("accessDeclaredMembers"),
1002	>	new PropertyPermission("*", "read"),
1003	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1004	>	}
1005	>
1006	>	/**
1007	>	* Sleeps until the given time has elapsed.
1008	>	* Throws AssertionFailedError if interrupted.
1009	>	*/
1010	>	void sleep(long millis) {
1011	>	try {
1012	>	delay(millis);
1013	>	} catch (InterruptedException fail) {
1014	>	AssertionFailedError afe =
1015	>	new AssertionFailedError("Unexpected InterruptedException");
1016	>	afe.initCause(fail);
1017	>	throw afe;
1018	>	}
1019	>	}
1020	>
1021	>	/**
1022	>	* Spin-waits up to the specified number of milliseconds for the given
1023	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1024	>	*/
1025	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1026	>	long startTime = System.nanoTime();
1027	>	for (;;) {
1028	>	Thread.State s = thread.getState();
1029	>	if (s == Thread.State.BLOCKED ||
1030	>	s == Thread.State.WAITING ||
1031	>	s == Thread.State.TIMED_WAITING)
1032	>	return;
1033	>	else if (s == Thread.State.TERMINATED)
1034	>	fail("Unexpected thread termination");
1035	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1036	>	threadAssertTrue(thread.isAlive());
1037	>	return;
1038		}
1039	<	catch(Exception e) {
1040	<	threadFail("unexpectedException");
1039	>	Thread.yield();
1040	>	}
1041	>	}
1042	>
1043	>	/**
1044	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1045	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1046	>	*/
1047	>	void waitForThreadToEnterWaitState(Thread thread) {
1048	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1049	>	}
1050	>
1051	>	/**
1052	>	* Returns the number of milliseconds since time given by
1053	>	* startNanoTime, which must have been previously returned from a
1054	>	* call to {@link System#nanoTime()}.
1055	>	*/
1056	>	static long millisElapsedSince(long startNanoTime) {
1057	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1058	>	}
1059	>
1060	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1061	>	//         long startTime = System.nanoTime();
1062	>	//         try {
1063	>	//             r.run();
1064	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1065	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1066	>	//             throw new AssertionFailedError("did not return promptly");
1067	>	//     }
1068	>
1069	>	//     void assertTerminatesPromptly(Runnable r) {
1070	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1071	>	//     }
1072	>
1073	>	/**
1074	>	* Checks that timed f.get() returns the expected value, and does not
1075	>	* wait for the timeout to elapse before returning.
1076	>	*/
1077	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1078	>	long startTime = System.nanoTime();
1079	>	try {
1080	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1081	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1082	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1083	>	throw new AssertionFailedError("timed get did not return promptly");
1084	>	}
1085	>
1086	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1087	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1088	>	}
1089	>
1090	>	/**
1091	>	* Returns a new started daemon Thread running the given runnable.
1092	>	*/
1093	>	Thread newStartedThread(Runnable runnable) {
1094	>	Thread t = new Thread(runnable);
1095	>	t.setDaemon(true);
1096	>	t.start();
1097	>	return t;
1098	>	}
1099	>
1100	>	/**
1101	>	* Waits for the specified time (in milliseconds) for the thread
1102	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1103	>	* the thread (in the hope that it may terminate later) and fails.
1104	>	*/
1105	>	void awaitTermination(Thread t, long timeoutMillis) {
1106	>	try {
1107	>	t.join(timeoutMillis);
1108	>	} catch (InterruptedException fail) {
1109	>	threadUnexpectedException(fail);
1110	>	} finally {
1111	>	if (t.getState() != Thread.State.TERMINATED) {
1112	>	t.interrupt();
1113	>	fail("Test timed out");
1114		}
1115		}
1116		}
1117
1118	<	public class ShortInterruptedRunnable implements Runnable {
1119	<	public void run() {
1118	>	/**
1119	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1120	>	* terminate (using {@link Thread#join(long)}), else interrupts
1121	>	* the thread (in the hope that it may terminate later) and fails.
1122	>	*/
1123	>	void awaitTermination(Thread t) {
1124	>	awaitTermination(t, LONG_DELAY_MS);
1125	>	}
1126	>
1127	>	// Some convenient Runnable classes
1128	>
1129	>	public abstract class CheckedRunnable implements Runnable {
1130	>	protected abstract void realRun() throws Throwable;
1131	>
1132	>	public final void run() {
1133		try {
1134	<	Thread.sleep(SHORT_DELAY_MS);
1135	<	threadFail("should throw IE");
1134	>	realRun();
1135	>	} catch (Throwable fail) {
1136	>	threadUnexpectedException(fail);
1137		}
1138	<	catch(InterruptedException success) {
1138	>	}
1139	>	}
1140	>
1141	>	public abstract class RunnableShouldThrow implements Runnable {
1142	>	protected abstract void realRun() throws Throwable;
1143	>
1144	>	final Class<?> exceptionClass;
1145	>
1146	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1147	>	this.exceptionClass = exceptionClass;
1148	>	}
1149	>
1150	>	public final void run() {
1151	>	try {
1152	>	realRun();
1153	>	threadShouldThrow(exceptionClass.getSimpleName());
1154	>	} catch (Throwable t) {
1155	>	if (! exceptionClass.isInstance(t))
1156	>	threadUnexpectedException(t);
1157		}
1158		}
1159		}
1160
1161	<	public class SmallRunnable implements Runnable {
1162	<	public void run() {
1161	>	public abstract class ThreadShouldThrow extends Thread {
1162	>	protected abstract void realRun() throws Throwable;
1163	>
1164	>	final Class<?> exceptionClass;
1165	>
1166	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1167	>	this.exceptionClass = exceptionClass;
1168	>	}
1169	>
1170	>	public final void run() {
1171		try {
1172	<	Thread.sleep(SMALL_DELAY_MS);
1172	>	realRun();
1173	>	threadShouldThrow(exceptionClass.getSimpleName());
1174	>	} catch (Throwable t) {
1175	>	if (! exceptionClass.isInstance(t))
1176	>	threadUnexpectedException(t);
1177		}
1178	<	catch(Exception e) {
1179	<	threadFail("unexpectedException");
1178	>	}
1179	>	}
1180	>
1181	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1182	>	protected abstract void realRun() throws Throwable;
1183	>
1184	>	public final void run() {
1185	>	try {
1186	>	realRun();
1187	>	threadShouldThrow("InterruptedException");
1188	>	} catch (InterruptedException success) {
1189	>	threadAssertFalse(Thread.interrupted());
1190	>	} catch (Throwable fail) {
1191	>	threadUnexpectedException(fail);
1192		}
1193		}
1194		}
1195
1196	<	public class SmallCallable implements Callable {
1197	<	public Object call() {
1196	>	public abstract class CheckedCallable<T> implements Callable<T> {
1197	>	protected abstract T realCall() throws Throwable;
1198	>
1199	>	public final T call() {
1200		try {
1201	<	Thread.sleep(SMALL_DELAY_MS);
1201	>	return realCall();
1202	>	} catch (Throwable fail) {
1203	>	threadUnexpectedException(fail);
1204	>	return null;
1205		}
1206	<	catch(Exception e) {
1207	<	threadFail("unexpectedException");
1206	>	}
1207	>	}
1208	>
1209	>	public abstract class CheckedInterruptedCallable<T>
1210	>	implements Callable<T> {
1211	>	protected abstract T realCall() throws Throwable;
1212	>
1213	>	public final T call() {
1214	>	try {
1215	>	T result = realCall();
1216	>	threadShouldThrow("InterruptedException");
1217	>	return result;
1218	>	} catch (InterruptedException success) {
1219	>	threadAssertFalse(Thread.interrupted());
1220	>	} catch (Throwable fail) {
1221	>	threadUnexpectedException(fail);
1222		}
1223	+	return null;
1224	+	}
1225	+	}
1226	+
1227	+	public static class NoOpRunnable implements Runnable {
1228	+	public void run() {}
1229	+	}
1230	+
1231	+	public static class NoOpCallable implements Callable {
1232	+	public Object call() { return Boolean.TRUE; }
1233	+	}
1234	+
1235	+	public static final String TEST_STRING = "a test string";
1236	+
1237	+	public static class StringTask implements Callable<String> {
1238	+	final String value;
1239	+	public StringTask() { this(TEST_STRING); }
1240	+	public StringTask(String value) { this.value = value; }
1241	+	public String call() { return value; }
1242	+	}
1243	+
1244	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1245	+	return new CheckedCallable<String>() {
1246	+	protected String realCall() {
1247	+	try {
1248	+	latch.await();
1249	+	} catch (InterruptedException quittingTime) {}
1250	+	return TEST_STRING;
1251	+	}};
1252	+	}
1253	+
1254	+	public Runnable awaiter(final CountDownLatch latch) {
1255	+	return new CheckedRunnable() {
1256	+	public void realRun() throws InterruptedException {
1257	+	await(latch);
1258	+	}};
1259	+	}
1260	+
1261	+	public void await(CountDownLatch latch) {
1262	+	try {
1263	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1264	+	} catch (Throwable fail) {
1265	+	threadUnexpectedException(fail);
1266	+	}
1267	+	}
1268	+
1269	+	public void await(Semaphore semaphore) {
1270	+	try {
1271	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1272	+	} catch (Throwable fail) {
1273	+	threadUnexpectedException(fail);
1274	+	}
1275	+	}
1276	+
1277	+	//     /**
1278	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1279	+	//      */
1280	+	//     public void await(AtomicBoolean flag) {
1281	+	//         await(flag, LONG_DELAY_MS);
1282	+	//     }
1283	+
1284	+	//     /**
1285	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1286	+	//      */
1287	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1288	+	//         long startTime = System.nanoTime();
1289	+	//         while (!flag.get()) {
1290	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1291	+	//                 throw new AssertionFailedError("timed out");
1292	+	//             Thread.yield();
1293	+	//         }
1294	+	//     }
1295	+
1296	+	public static class NPETask implements Callable<String> {
1297	+	public String call() { throw new NullPointerException(); }
1298	+	}
1299	+
1300	+	public static class CallableOne implements Callable<Integer> {
1301	+	public Integer call() { return one; }
1302	+	}
1303	+
1304	+	public class ShortRunnable extends CheckedRunnable {
1305	+	protected void realRun() throws Throwable {
1306	+	delay(SHORT_DELAY_MS);
1307	+	}
1308	+	}
1309	+
1310	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1311	+	protected void realRun() throws InterruptedException {
1312	+	delay(SHORT_DELAY_MS);
1313	+	}
1314	+	}
1315	+
1316	+	public class SmallRunnable extends CheckedRunnable {
1317	+	protected void realRun() throws Throwable {
1318	+	delay(SMALL_DELAY_MS);
1319	+	}
1320	+	}
1321	+
1322	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1323	+	protected void realRun() {
1324	+	try {
1325	+	delay(SMALL_DELAY_MS);
1326	+	} catch (InterruptedException ok) {}
1327	+	}
1328	+	}
1329	+
1330	+	public class SmallCallable extends CheckedCallable {
1331	+	protected Object realCall() throws InterruptedException {
1332	+	delay(SMALL_DELAY_MS);
1333		return Boolean.TRUE;
1334		}
1335		}
1336
1337	<	public class SmallInterruptedRunnable implements Runnable {
1337	>	public class MediumRunnable extends CheckedRunnable {
1338	>	protected void realRun() throws Throwable {
1339	>	delay(MEDIUM_DELAY_MS);
1340	>	}
1341	>	}
1342	>
1343	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1344	>	protected void realRun() throws InterruptedException {
1345	>	delay(MEDIUM_DELAY_MS);
1346	>	}
1347	>	}
1348	>
1349	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1350	>	return new CheckedRunnable() {
1351	>	protected void realRun() {
1352	>	try {
1353	>	delay(timeoutMillis);
1354	>	} catch (InterruptedException ok) {}
1355	>	}};
1356	>	}
1357	>
1358	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1359	>	protected void realRun() {
1360	>	try {
1361	>	delay(MEDIUM_DELAY_MS);
1362	>	} catch (InterruptedException ok) {}
1363	>	}
1364	>	}
1365	>
1366	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1367	>	protected void realRun() {
1368	>	try {
1369	>	delay(LONG_DELAY_MS);
1370	>	} catch (InterruptedException ok) {}
1371	>	}
1372	>	}
1373	>
1374	>	/**
1375	>	* For use as ThreadFactory in constructors
1376	>	*/
1377	>	public static class SimpleThreadFactory implements ThreadFactory {
1378	>	public Thread newThread(Runnable r) {
1379	>	return new Thread(r);
1380	>	}
1381	>	}
1382	>
1383	>	public interface TrackedRunnable extends Runnable {
1384	>	boolean isDone();
1385	>	}
1386	>
1387	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1388	>	return new TrackedRunnable() {
1389	>	private volatile boolean done = false;
1390	>	public boolean isDone() { return done; }
1391	>	public void run() {
1392	>	try {
1393	>	delay(timeoutMillis);
1394	>	done = true;
1395	>	} catch (InterruptedException ok) {}
1396	>	}
1397	>	};
1398	>	}
1399	>
1400	>	public static class TrackedShortRunnable implements Runnable {
1401	>	public volatile boolean done = false;
1402		public void run() {
1403		try {
1404	<	Thread.sleep(SMALL_DELAY_MS);
1405	<	threadFail("should throw IE");
1406	<	}
216	<	catch(InterruptedException success) {
217	<	}
1404	>	delay(SHORT_DELAY_MS);
1405	>	done = true;
1406	>	} catch (InterruptedException ok) {}
1407		}
1408		}
1409
1410	+	public static class TrackedSmallRunnable implements Runnable {
1411	+	public volatile boolean done = false;
1412	+	public void run() {
1413	+	try {
1414	+	delay(SMALL_DELAY_MS);
1415	+	done = true;
1416	+	} catch (InterruptedException ok) {}
1417	+	}
1418	+	}
1419
1420	<	public class MediumRunnable implements Runnable {
1420	>	public static class TrackedMediumRunnable implements Runnable {
1421	>	public volatile boolean done = false;
1422		public void run() {
1423		try {
1424	<	Thread.sleep(MEDIUM_DELAY_MS);
1425	<	}
1426	<	catch(Exception e) {
228	<	threadFail("unexpectedException");
229	<	}
1424	>	delay(MEDIUM_DELAY_MS);
1425	>	done = true;
1426	>	} catch (InterruptedException ok) {}
1427		}
1428		}
1429
1430	<	public class MediumInterruptedRunnable implements Runnable {
1430	>	public static class TrackedLongRunnable implements Runnable {
1431	>	public volatile boolean done = false;
1432		public void run() {
1433		try {
1434	<	Thread.sleep(MEDIUM_DELAY_MS);
1435	<	threadFail("should throw IE");
1434	>	delay(LONG_DELAY_MS);
1435	>	done = true;
1436	>	} catch (InterruptedException ok) {}
1437	>	}
1438	>	}
1439	>
1440	>	public static class TrackedNoOpRunnable implements Runnable {
1441	>	public volatile boolean done = false;
1442	>	public void run() {
1443	>	done = true;
1444	>	}
1445	>	}
1446	>
1447	>	public static class TrackedCallable implements Callable {
1448	>	public volatile boolean done = false;
1449	>	public Object call() {
1450	>	try {
1451	>	delay(SMALL_DELAY_MS);
1452	>	done = true;
1453	>	} catch (InterruptedException ok) {}
1454	>	return Boolean.TRUE;
1455	>	}
1456	>	}
1457	>
1458	>	/**
1459	>	* Analog of CheckedRunnable for RecursiveAction
1460	>	*/
1461	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1462	>	protected abstract void realCompute() throws Throwable;
1463	>
1464	>	@Override protected final void compute() {
1465	>	try {
1466	>	realCompute();
1467	>	} catch (Throwable fail) {
1468	>	threadUnexpectedException(fail);
1469		}
1470	<	catch(InterruptedException success) {
1470	>	}
1471	>	}
1472	>
1473	>	/**
1474	>	* Analog of CheckedCallable for RecursiveTask
1475	>	*/
1476	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1477	>	protected abstract T realCompute() throws Throwable;
1478	>
1479	>	@Override protected final T compute() {
1480	>	try {
1481	>	return realCompute();
1482	>	} catch (Throwable fail) {
1483	>	threadUnexpectedException(fail);
1484	>	return null;
1485		}
1486		}
1487		}
1488
1489	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1490	<	public void run() {
1489	>	/**
1490	>	* For use as RejectedExecutionHandler in constructors
1491	>	*/
1492	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1493	>	public void rejectedExecution(Runnable r,
1494	>	ThreadPoolExecutor executor) {}
1495	>	}
1496	>
1497	>	/**
1498	>	* A CyclicBarrier that uses timed await and fails with
1499	>	* AssertionFailedErrors instead of throwing checked exceptions.
1500	>	*/
1501	>	public class CheckedBarrier extends CyclicBarrier {
1502	>	public CheckedBarrier(int parties) { super(parties); }
1503	>
1504	>	public int await() {
1505		try {
1506	<	Thread.sleep(MEDIUM_DELAY_MS);
1506	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1507	>	} catch (TimeoutException timedOut) {
1508	>	throw new AssertionFailedError("timed out");
1509	>	} catch (Exception fail) {
1510	>	AssertionFailedError afe =
1511	>	new AssertionFailedError("Unexpected exception: " + fail);
1512	>	afe.initCause(fail);
1513	>	throw afe;
1514		}
1515	<	catch(InterruptedException success) {
1515	>	}
1516	>	}
1517	>
1518	>	void checkEmpty(BlockingQueue q) {
1519	>	try {
1520	>	assertTrue(q.isEmpty());
1521	>	assertEquals(0, q.size());
1522	>	assertNull(q.peek());
1523	>	assertNull(q.poll());
1524	>	assertNull(q.poll(0, MILLISECONDS));
1525	>	assertEquals(q.toString(), "[]");
1526	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1527	>	assertFalse(q.iterator().hasNext());
1528	>	try {
1529	>	q.element();
1530	>	shouldThrow();
1531	>	} catch (NoSuchElementException success) {}
1532	>	try {
1533	>	q.iterator().next();
1534	>	shouldThrow();
1535	>	} catch (NoSuchElementException success) {}
1536	>	try {
1537	>	q.remove();
1538	>	shouldThrow();
1539	>	} catch (NoSuchElementException success) {}
1540	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1541	>	}
1542	>
1543	>	void assertSerialEquals(Object x, Object y) {
1544	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1545	>	}
1546	>
1547	>	void assertNotSerialEquals(Object x, Object y) {
1548	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1549	>	}
1550	>
1551	>	byte[] serialBytes(Object o) {
1552	>	try {
1553	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1554	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1555	>	oos.writeObject(o);
1556	>	oos.flush();
1557	>	oos.close();
1558	>	return bos.toByteArray();
1559	>	} catch (Throwable fail) {
1560	>	threadUnexpectedException(fail);
1561	>	return new byte[0];
1562	>	}
1563	>	}
1564	>
1565	>	@SuppressWarnings("unchecked")
1566	>	<T> T serialClone(T o) {
1567	>	try {
1568	>	ObjectInputStream ois = new ObjectInputStream
1569	>	(new ByteArrayInputStream(serialBytes(o)));
1570	>	T clone = (T) ois.readObject();
1571	>	assertSame(o.getClass(), clone.getClass());
1572	>	return clone;
1573	>	} catch (Throwable fail) {
1574	>	threadUnexpectedException(fail);
1575	>	return null;
1576	>	}
1577	>	}
1578	>
1579	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1580	>	Runnable... throwingActions) {
1581	>	for (Runnable throwingAction : throwingActions) {
1582	>	boolean threw = false;
1583	>	try { throwingAction.run(); }
1584	>	catch (Throwable t) {
1585	>	threw = true;
1586	>	if (!expectedExceptionClass.isInstance(t)) {
1587	>	AssertionFailedError afe =
1588	>	new AssertionFailedError
1589	>	("Expected " + expectedExceptionClass.getName() +
1590	>	", got " + t.getClass().getName());
1591	>	afe.initCause(t);
1592	>	threadUnexpectedException(afe);
1593	>	}
1594		}
1595	+	if (!threw)
1596	+	shouldThrow(expectedExceptionClass.getName());
1597		}
1598		}
1599	<
1599	>
1600	>	public void assertIteratorExhausted(Iterator<?> it) {
1601	>	try {
1602	>	it.next();
1603	>	shouldThrow();
1604	>	} catch (NoSuchElementException success) {}
1605	>	assertFalse(it.hasNext());
1606	>	}
1607		}

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