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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.1 by dl, Sun Sep 14 20:42:40 2003 UTC vs.
Revision 1.119 by jsr166, Mon Jun 16 20:13:54 2014 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.io.ByteArrayInputStream;
11	>	import java.io.ByteArrayOutputStream;
12	>	import java.io.ObjectInputStream;
13	>	import java.io.ObjectOutputStream;
14	>	import java.lang.management.ManagementFactory;
15	>	import java.lang.management.ThreadInfo;
16	>	import java.lang.reflect.Method;
17	>	import java.util.ArrayList;
18	>	import java.util.Arrays;
19	>	import java.util.Date;
20	>	import java.util.Enumeration;
21	>	import java.util.List;
22	>	import java.util.NoSuchElementException;
23	>	import java.util.PropertyPermission;
24		import java.util.concurrent.*;
25	<	import java.io.*;
26	<
25	>	import java.util.concurrent.atomic.AtomicBoolean;
26	>	import java.util.concurrent.atomic.AtomicReference;
27	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
28	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
29	>	import java.util.regex.Pattern;
30	>	import java.security.CodeSource;
31	>	import java.security.Permission;
32	>	import java.security.PermissionCollection;
33	>	import java.security.Permissions;
34	>	import java.security.Policy;
35	>	import java.security.ProtectionDomain;
36	>	import java.security.SecurityPermission;
37
38		/**
39	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
40	<	* utility methods, as well as a simple framework for helping to make
41	<	* sure that assertions failing in generated threads cause the
42	<	* associated test that generated them to itself fail (which JUnit doe
43	<	* not otherwise arrange).  The rules for creating such tests are:
39	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
40	>	* utility methods and classes, as well as a simple framework for
41	>	* helping to make sure that assertions failing in generated threads
42	>	* cause the associated test that generated them to itself fail (which
43	>	* JUnit does not otherwise arrange).  The rules for creating such
44	>	* tests are:
45		*
46		* <ol>
47		*
48		* <li> All assertions in code running in generated threads must use
49	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
50	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
51	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
49	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
50	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
51	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
52		* particularly recommended) for other code to use these forms too.
53		* Only the most typically used JUnit assertion methods are defined
54		* this way, but enough to live with.</li>
55		*
56	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
57	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
56	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
57	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
58		* them. These methods are used to clear and check for thread
59		* assertion failures.</li>
60		*
61	<	* <li>All delays and timeouts must use one of the constants {@link
62	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
63	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
64	<	* discriminatable from zero time, and always allows enough time for
65	<	* the small amounts of computation (creating a thread, calling a few
61	>	* <li>All delays and timeouts must use one of the constants {@code
62	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
63	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
64	>	* discriminable from zero time, and always allows enough time for the
65	>	* small amounts of computation (creating a thread, calling a few
66		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
67		* is always discriminable as larger than SHORT and smaller than
68		* MEDIUM.  And so on. These constants are set to conservative values,
69	<	* (100, 500, 1000, 5000 MS) but even so, if there is ever any doubt,
70	<	* they can all be increased in one spot to rerun tests on slower
46	<	* platforms</li>
69	>	* but even so, if there is ever any doubt, they can all be increased
70	>	* in one spot to rerun tests on slower platforms.</li>
71		*
72		* <li> All threads generated must be joined inside each test case
73	<	* method (or <tt>fail</tt> to do so) before returning from the
74	<	* method. The {@link joinPool} method can be used to do this when
73	>	* method (or {@code fail} to do so) before returning from the
74	>	* method. The {@code joinPool} method can be used to do this when
75		* using Executors.</li>
76		*
77		* </ol>
78	+	*
79	+	* <p><b>Other notes</b>
80	+	* <ul>
81	+	*
82	+	* <li> Usually, there is one testcase method per JSR166 method
83	+	* covering "normal" operation, and then as many exception-testing
84	+	* methods as there are exceptions the method can throw. Sometimes
85	+	* there are multiple tests per JSR166 method when the different
86	+	* "normal" behaviors differ significantly. And sometimes testcases
87	+	* cover multiple methods when they cannot be tested in
88	+	* isolation.</li>
89	+	*
90	+	* <li> The documentation style for testcases is to provide as javadoc
91	+	* a simple sentence or two describing the property that the testcase
92	+	* method purports to test. The javadocs do not say anything about how
93	+	* the property is tested. To find out, read the code.</li>
94	+	*
95	+	* <li> These tests are "conformance tests", and do not attempt to
96	+	* test throughput, latency, scalability or other performance factors
97	+	* (see the separate "jtreg" tests for a set intended to check these
98	+	* for the most central aspects of functionality.) So, most tests use
99	+	* the smallest sensible numbers of threads, collection sizes, etc
100	+	* needed to check basic conformance.</li>
101	+	*
102	+	* <li>The test classes currently do not declare inclusion in
103	+	* any particular package to simplify things for people integrating
104	+	* them in TCK test suites.</li>
105	+	*
106	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
107	+	* runs all JSR166 unit tests.</li>
108	+	*
109	+	* </ul>
110		*/
111		public class JSR166TestCase extends TestCase {
112	+	private static final boolean useSecurityManager =
113	+	Boolean.getBoolean("jsr166.useSecurityManager");
114	+
115	+	protected static final boolean expensiveTests =
116	+	Boolean.getBoolean("jsr166.expensiveTests");
117	+
118	+	/**
119	+	* If true, also run tests that are not part of the official tck
120	+	* because they test unspecified implementation details.
121	+	*/
122	+	protected static final boolean testImplementationDetails =
123	+	Boolean.getBoolean("jsr166.testImplementationDetails");
124	+
125	+	/**
126	+	* If true, report on stdout all "slow" tests, that is, ones that
127	+	* take more than profileThreshold milliseconds to execute.
128	+	*/
129	+	private static final boolean profileTests =
130	+	Boolean.getBoolean("jsr166.profileTests");
131
132		/**
133	<	* Flag set true if any threadAssert methods fail
133	>	* The number of milliseconds that tests are permitted for
134	>	* execution without being reported, when profileTests is set.
135		*/
136	<	protected volatile boolean threadFailed;
136	>	private static final long profileThreshold =
137	>	Long.getLong("jsr166.profileThreshold", 100);
138
139		/**
140	<	* Initialize test to indicat that no thread assertions have failed
140	>	* The number of repetitions per test (for tickling rare bugs).
141		*/
142	<	public void setUp() {
143	<	threadFailed = false;
142	>	private static final int runsPerTest =
143	>	Integer.getInteger("jsr166.runsPerTest", 1);
144	>
145	>	/**
146	>	* A filter for tests to run, matching strings of the form
147	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
148	>	* Usefully combined with jsr166.runsPerTest.
149	>	*/
150	>	private static final Pattern methodFilter = methodFilter();
151	>
152	>	private static Pattern methodFilter() {
153	>	String regex = System.getProperty("jsr166.methodFilter");
154	>	return (regex == null) ? null : Pattern.compile(regex);
155	>	}
156	>
157	>	protected void runTest() throws Throwable {
158	>	if (methodFilter == null
159	>	|| methodFilter.matcher(toString()).find()) {
160	>	for (int i = 0; i < runsPerTest; i++) {
161	>	if (profileTests)
162	>	runTestProfiled();
163	>	else
164	>	super.runTest();
165	>	}
166	>	}
167	>	}
168	>
169	>	protected void runTestProfiled() throws Throwable {
170	>	// Warmup run, notably to trigger all needed classloading.
171	>	super.runTest();
172	>	long t0 = System.nanoTime();
173	>	try {
174	>	super.runTest();
175	>	} finally {
176	>	long elapsedMillis = millisElapsedSince(t0);
177	>	if (elapsedMillis >= profileThreshold)
178	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
179	>	}
180		}
181
182		/**
183	<	* Trigger test case failure if any thread assertions have failed
183	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
184	>	* Optional command line arg provides the number of iterations to
185	>	* repeat running the tests.
186		*/
187	<	public void tearDown() {
188	<	assertFalse(threadFailed);
187	>	public static void main(String[] args) {
188	>	if (useSecurityManager) {
189	>	System.err.println("Setting a permissive security manager");
190	>	Policy.setPolicy(permissivePolicy());
191	>	System.setSecurityManager(new SecurityManager());
192	>	}
193	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
194	>
195	>	Test s = suite();
196	>	for (int i = 0; i < iters; ++i) {
197	>	junit.textui.TestRunner.run(s);
198	>	System.gc();
199	>	System.runFinalization();
200	>	}
201	>	System.exit(0);
202	>	}
203	>
204	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
205	>	TestSuite suite = new TestSuite();
206	>	for (Object suiteOrClass : suiteOrClasses) {
207	>	if (suiteOrClass instanceof TestSuite)
208	>	suite.addTest((TestSuite) suiteOrClass);
209	>	else if (suiteOrClass instanceof Class)
210	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
211	>	else
212	>	throw new ClassCastException("not a test suite or class");
213	>	}
214	>	return suite;
215		}
216
217	+	public static void addNamedTestClasses(TestSuite suite,
218	+	String... testClassNames) {
219	+	for (String testClassName : testClassNames) {
220	+	try {
221	+	Class<?> testClass = Class.forName(testClassName);
222	+	Method m = testClass.getDeclaredMethod("suite",
223	+	new Class<?>[0]);
224	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
225	+	} catch (Exception e) {
226	+	throw new Error("Missing test class", e);
227	+	}
228	+	}
229	+	}
230	+
231	+	public static final double JAVA_CLASS_VERSION;
232	+	public static final String JAVA_SPECIFICATION_VERSION;
233	+	static {
234	+	try {
235	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
236	+	new java.security.PrivilegedAction<Double>() {
237	+	public Double run() {
238	+	return Double.valueOf(System.getProperty("java.class.version"));}});
239	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
240	+	new java.security.PrivilegedAction<String>() {
241	+	public String run() {
242	+	return System.getProperty("java.specification.version");}});
243	+	} catch (Throwable t) {
244	+	throw new Error(t);
245	+	}
246	+	}
247	+
248	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
249	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
250	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
251	+	public static boolean atLeastJava9() {
252	+	// As of 2014-05, java9 still uses 52.0 class file version
253	+	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
254	+	}
255	+
256	+	/**
257	+	* Collects all JSR166 unit tests as one suite.
258	+	*/
259	+	public static Test suite() {
260	+	// Java7+ test classes
261	+	TestSuite suite = newTestSuite(
262	+	ForkJoinPoolTest.suite(),
263	+	ForkJoinTaskTest.suite(),
264	+	RecursiveActionTest.suite(),
265	+	RecursiveTaskTest.suite(),
266	+	LinkedTransferQueueTest.suite(),
267	+	PhaserTest.suite(),
268	+	ThreadLocalRandomTest.suite(),
269	+	AbstractExecutorServiceTest.suite(),
270	+	AbstractQueueTest.suite(),
271	+	AbstractQueuedSynchronizerTest.suite(),
272	+	AbstractQueuedLongSynchronizerTest.suite(),
273	+	ArrayBlockingQueueTest.suite(),
274	+	ArrayDequeTest.suite(),
275	+	AtomicBooleanTest.suite(),
276	+	AtomicIntegerArrayTest.suite(),
277	+	AtomicIntegerFieldUpdaterTest.suite(),
278	+	AtomicIntegerTest.suite(),
279	+	AtomicLongArrayTest.suite(),
280	+	AtomicLongFieldUpdaterTest.suite(),
281	+	AtomicLongTest.suite(),
282	+	AtomicMarkableReferenceTest.suite(),
283	+	AtomicReferenceArrayTest.suite(),
284	+	AtomicReferenceFieldUpdaterTest.suite(),
285	+	AtomicReferenceTest.suite(),
286	+	AtomicStampedReferenceTest.suite(),
287	+	ConcurrentHashMapTest.suite(),
288	+	ConcurrentLinkedDequeTest.suite(),
289	+	ConcurrentLinkedQueueTest.suite(),
290	+	ConcurrentSkipListMapTest.suite(),
291	+	ConcurrentSkipListSubMapTest.suite(),
292	+	ConcurrentSkipListSetTest.suite(),
293	+	ConcurrentSkipListSubSetTest.suite(),
294	+	CopyOnWriteArrayListTest.suite(),
295	+	CopyOnWriteArraySetTest.suite(),
296	+	CountDownLatchTest.suite(),
297	+	CyclicBarrierTest.suite(),
298	+	DelayQueueTest.suite(),
299	+	EntryTest.suite(),
300	+	ExchangerTest.suite(),
301	+	ExecutorsTest.suite(),
302	+	ExecutorCompletionServiceTest.suite(),
303	+	FutureTaskTest.suite(),
304	+	LinkedBlockingDequeTest.suite(),
305	+	LinkedBlockingQueueTest.suite(),
306	+	LinkedListTest.suite(),
307	+	LockSupportTest.suite(),
308	+	PriorityBlockingQueueTest.suite(),
309	+	PriorityQueueTest.suite(),
310	+	ReentrantLockTest.suite(),
311	+	ReentrantReadWriteLockTest.suite(),
312	+	ScheduledExecutorTest.suite(),
313	+	ScheduledExecutorSubclassTest.suite(),
314	+	SemaphoreTest.suite(),
315	+	SynchronousQueueTest.suite(),
316	+	SystemTest.suite(),
317	+	ThreadLocalTest.suite(),
318	+	ThreadPoolExecutorTest.suite(),
319	+	ThreadPoolExecutorSubclassTest.suite(),
320	+	ThreadTest.suite(),
321	+	TimeUnitTest.suite(),
322	+	TreeMapTest.suite(),
323	+	TreeSetTest.suite(),
324	+	TreeSubMapTest.suite(),
325	+	TreeSubSetTest.suite());
326	+
327	+	// Java8+ test classes
328	+	if (atLeastJava8()) {
329	+	String[] java8TestClassNames = {
330	+	"Atomic8Test",
331	+	"CompletableFutureTest",
332	+	"ConcurrentHashMap8Test",
333	+	"CountedCompleterTest",
334	+	"DoubleAccumulatorTest",
335	+	"DoubleAdderTest",
336	+	"ForkJoinPool8Test",
337	+	"ForkJoinTask8Test",
338	+	"LongAccumulatorTest",
339	+	"LongAdderTest",
340	+	"SplittableRandomTest",
341	+	"StampedLockTest",
342	+	"ThreadLocalRandom8Test",
343	+	};
344	+	addNamedTestClasses(suite, java8TestClassNames);
345	+	}
346	+
347	+	// Java9+ test classes
348	+	if (atLeastJava9()) {
349	+	String[] java9TestClassNames = {
350	+	"ThreadPoolExecutor9Test",
351	+	};
352	+	addNamedTestClasses(suite, java9TestClassNames);
353	+	}
354	+
355	+	return suite;
356	+	}
357	+
358	+	// Delays for timing-dependent tests, in milliseconds.
359	+
360	+	public static long SHORT_DELAY_MS;
361	+	public static long SMALL_DELAY_MS;
362	+	public static long MEDIUM_DELAY_MS;
363	+	public static long LONG_DELAY_MS;
364	+
365	+	/**
366	+	* Returns the shortest timed delay. This could
367	+	* be reimplemented to use for example a Property.
368	+	*/
369	+	protected long getShortDelay() {
370	+	return 50;
371	+	}
372	+
373	+	/**
374	+	* Sets delays as multiples of SHORT_DELAY.
375	+	*/
376	+	protected void setDelays() {
377	+	SHORT_DELAY_MS = getShortDelay();
378	+	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
379	+	MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
380	+	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
381	+	}
382	+
383	+	/**
384	+	* Returns a timeout in milliseconds to be used in tests that
385	+	* verify that operations block or time out.
386	+	*/
387	+	long timeoutMillis() {
388	+	return SHORT_DELAY_MS / 4;
389	+	}
390	+
391	+	/**
392	+	* Returns a new Date instance representing a time delayMillis
393	+	* milliseconds in the future.
394	+	*/
395	+	Date delayedDate(long delayMillis) {
396	+	return new Date(System.currentTimeMillis() + delayMillis);
397	+	}
398	+
399	+	/**
400	+	* The first exception encountered if any threadAssertXXX method fails.
401	+	*/
402	+	private final AtomicReference<Throwable> threadFailure
403	+	= new AtomicReference<Throwable>(null);
404	+
405	+	/**
406	+	* Records an exception so that it can be rethrown later in the test
407	+	* harness thread, triggering a test case failure.  Only the first
408	+	* failure is recorded; subsequent calls to this method from within
409	+	* the same test have no effect.
410	+	*/
411	+	public void threadRecordFailure(Throwable t) {
412	+	threadFailure.compareAndSet(null, t);
413	+	}
414	+
415	+	public void setUp() {
416	+	setDelays();
417	+	}
418	+
419	+	/**
420	+	* Extra checks that get done for all test cases.
421	+	*
422	+	* Triggers test case failure if any thread assertions have failed,
423	+	* by rethrowing, in the test harness thread, any exception recorded
424	+	* earlier by threadRecordFailure.
425	+	*
426	+	* Triggers test case failure if interrupt status is set in the main thread.
427	+	*/
428	+	public void tearDown() throws Exception {
429	+	Throwable t = threadFailure.getAndSet(null);
430	+	if (t != null) {
431	+	if (t instanceof Error)
432	+	throw (Error) t;
433	+	else if (t instanceof RuntimeException)
434	+	throw (RuntimeException) t;
435	+	else if (t instanceof Exception)
436	+	throw (Exception) t;
437	+	else {
438	+	AssertionFailedError afe =
439	+	new AssertionFailedError(t.toString());
440	+	afe.initCause(t);
441	+	throw afe;
442	+	}
443	+	}
444	+
445	+	if (Thread.interrupted())
446	+	throw new AssertionFailedError("interrupt status set in main thread");
447	+
448	+	checkForkJoinPoolThreadLeaks();
449	+	}
450	+
451	+	/**
452	+	* Find missing try { ... } finally { joinPool(e); }
453	+	*/
454	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
455	+	Thread[] survivors = new Thread[5];
456	+	int count = Thread.enumerate(survivors);
457	+	for (int i = 0; i < count; i++) {
458	+	Thread thread = survivors[i];
459	+	String name = thread.getName();
460	+	if (name.startsWith("ForkJoinPool-")) {
461	+	// give thread some time to terminate
462	+	thread.join(LONG_DELAY_MS);
463	+	if (!thread.isAlive()) continue;
464	+	thread.stop();
465	+	throw new AssertionFailedError
466	+	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
467	+	toString(), name));
468	+	}
469	+	}
470	+	}
471	+
472	+	/**
473	+	* Just like fail(reason), but additionally recording (using
474	+	* threadRecordFailure) any AssertionFailedError thrown, so that
475	+	* the current testcase will fail.
476	+	*/
477		public void threadFail(String reason) {
478	<	threadFailed = true;
479	<	fail(reason);
478	>	try {
479	>	fail(reason);
480	>	} catch (AssertionFailedError t) {
481	>	threadRecordFailure(t);
482	>	fail(reason);
483	>	}
484		}
485
486	+	/**
487	+	* Just like assertTrue(b), but additionally recording (using
488	+	* threadRecordFailure) any AssertionFailedError thrown, so that
489	+	* the current testcase will fail.
490	+	*/
491		public void threadAssertTrue(boolean b) {
492	<	if (!b) {
83	<	threadFailed = true;
492	>	try {
493		assertTrue(b);
494	+	} catch (AssertionFailedError t) {
495	+	threadRecordFailure(t);
496	+	throw t;
497		}
498		}
499	+
500	+	/**
501	+	* Just like assertFalse(b), but additionally recording (using
502	+	* threadRecordFailure) any AssertionFailedError thrown, so that
503	+	* the current testcase will fail.
504	+	*/
505		public void threadAssertFalse(boolean b) {
506	<	if (b) {
89	<	threadFailed = true;
506	>	try {
507		assertFalse(b);
508	+	} catch (AssertionFailedError t) {
509	+	threadRecordFailure(t);
510	+	throw t;
511		}
512		}
513	+
514	+	/**
515	+	* Just like assertNull(x), but additionally recording (using
516	+	* threadRecordFailure) any AssertionFailedError thrown, so that
517	+	* the current testcase will fail.
518	+	*/
519		public void threadAssertNull(Object x) {
520	<	if (x != null) {
95	<	threadFailed = true;
520	>	try {
521		assertNull(x);
522	+	} catch (AssertionFailedError t) {
523	+	threadRecordFailure(t);
524	+	throw t;
525		}
526		}
527	+
528	+	/**
529	+	* Just like assertEquals(x, y), but additionally recording (using
530	+	* threadRecordFailure) any AssertionFailedError thrown, so that
531	+	* the current testcase will fail.
532	+	*/
533		public void threadAssertEquals(long x, long y) {
534	<	if (x != y) {
101	<	threadFailed = true;
534	>	try {
535		assertEquals(x, y);
536	+	} catch (AssertionFailedError t) {
537	+	threadRecordFailure(t);
538	+	throw t;
539		}
540		}
541	+
542	+	/**
543	+	* Just like assertEquals(x, y), but additionally recording (using
544	+	* threadRecordFailure) any AssertionFailedError thrown, so that
545	+	* the current testcase will fail.
546	+	*/
547		public void threadAssertEquals(Object x, Object y) {
548	<	if (x != y && (x == null || !x.equals(y))) {
107	<	threadFailed = true;
548	>	try {
549		assertEquals(x, y);
550	+	} catch (AssertionFailedError t) {
551	+	threadRecordFailure(t);
552	+	throw t;
553	+	} catch (Throwable t) {
554	+	threadUnexpectedException(t);
555	+	}
556	+	}
557	+
558	+	/**
559	+	* Just like assertSame(x, y), but additionally recording (using
560	+	* threadRecordFailure) any AssertionFailedError thrown, so that
561	+	* the current testcase will fail.
562	+	*/
563	+	public void threadAssertSame(Object x, Object y) {
564	+	try {
565	+	assertSame(x, y);
566	+	} catch (AssertionFailedError t) {
567	+	threadRecordFailure(t);
568	+	throw t;
569	+	}
570	+	}
571	+
572	+	/**
573	+	* Calls threadFail with message "should throw exception".
574	+	*/
575	+	public void threadShouldThrow() {
576	+	threadFail("should throw exception");
577	+	}
578	+
579	+	/**
580	+	* Calls threadFail with message "should throw" + exceptionName.
581	+	*/
582	+	public void threadShouldThrow(String exceptionName) {
583	+	threadFail("should throw " + exceptionName);
584	+	}
585	+
586	+	/**
587	+	* Records the given exception using {@link #threadRecordFailure},
588	+	* then rethrows the exception, wrapping it in an
589	+	* AssertionFailedError if necessary.
590	+	*/
591	+	public void threadUnexpectedException(Throwable t) {
592	+	threadRecordFailure(t);
593	+	t.printStackTrace();
594	+	if (t instanceof RuntimeException)
595	+	throw (RuntimeException) t;
596	+	else if (t instanceof Error)
597	+	throw (Error) t;
598	+	else {
599	+	AssertionFailedError afe =
600	+	new AssertionFailedError("unexpected exception: " + t);
601	+	afe.initCause(t);
602	+	throw afe;
603		}
604		}
605
606		/**
607	<	* Wait out termination of a thread pool or fail doing so
607	>	* Delays, via Thread.sleep, for the given millisecond delay, but
608	>	* if the sleep is shorter than specified, may re-sleep or yield
609	>	* until time elapses.
610		*/
611	<	public void joinPool(ExecutorService exec) {
611	>	static void delay(long millis) throws InterruptedException {
612	>	long startTime = System.nanoTime();
613	>	long ns = millis * 1000 * 1000;
614	>	for (;;) {
615	>	if (millis > 0L)
616	>	Thread.sleep(millis);
617	>	else // too short to sleep
618	>	Thread.yield();
619	>	long d = ns - (System.nanoTime() - startTime);
620	>	if (d > 0L)
621	>	millis = d / (1000 * 1000);
622	>	else
623	>	break;
624	>	}
625	>	}
626	>
627	>	/**
628	>	* Waits out termination of a thread pool or fails doing so.
629	>	*/
630	>	void joinPool(ExecutorService exec) {
631		try {
632		exec.shutdown();
633	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
634	<	} catch(InterruptedException ie) {
635	<	fail("unexpected exception");
633	>	assertTrue("ExecutorService did not terminate in a timely manner",
634	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
635	>	} catch (SecurityException ok) {
636	>	// Allowed in case test doesn't have privs
637	>	} catch (InterruptedException ie) {
638	>	fail("Unexpected InterruptedException");
639	>	}
640	>	}
641	>
642	>	/**
643	>	* A debugging tool to print all stack traces, as jstack does.
644	>	*/
645	>	static void printAllStackTraces() {
646	>	for (ThreadInfo info :
647	>	ManagementFactory.getThreadMXBean()
648	>	.dumpAllThreads(true, true))
649	>	System.err.print(info);
650	>	}
651	>
652	>	/**
653	>	* Checks that thread does not terminate within the default
654	>	* millisecond delay of {@code timeoutMillis()}.
655	>	*/
656	>	void assertThreadStaysAlive(Thread thread) {
657	>	assertThreadStaysAlive(thread, timeoutMillis());
658	>	}
659	>
660	>	/**
661	>	* Checks that thread does not terminate within the given millisecond delay.
662	>	*/
663	>	void assertThreadStaysAlive(Thread thread, long millis) {
664	>	try {
665	>	// No need to optimize the failing case via Thread.join.
666	>	delay(millis);
667	>	assertTrue(thread.isAlive());
668	>	} catch (InterruptedException ie) {
669	>	fail("Unexpected InterruptedException");
670	>	}
671	>	}
672	>
673	>	/**
674	>	* Checks that the threads do not terminate within the default
675	>	* millisecond delay of {@code timeoutMillis()}.
676	>	*/
677	>	void assertThreadsStayAlive(Thread... threads) {
678	>	assertThreadsStayAlive(timeoutMillis(), threads);
679	>	}
680	>
681	>	/**
682	>	* Checks that the threads do not terminate within the given millisecond delay.
683	>	*/
684	>	void assertThreadsStayAlive(long millis, Thread... threads) {
685	>	try {
686	>	// No need to optimize the failing case via Thread.join.
687	>	delay(millis);
688	>	for (Thread thread : threads)
689	>	assertTrue(thread.isAlive());
690	>	} catch (InterruptedException ie) {
691	>	fail("Unexpected InterruptedException");
692		}
693		}
694
695	<	public static final long SHORT_DELAY_MS =   100;
696	<	public static final long SMALL_DELAY_MS =   500;
697	<	public static final long MEDIUM_DELAY_MS = 1000;
698	<	public static final long LONG_DELAY_MS =   5000;
695	>	/**
696	>	* Checks that future.get times out, with the default timeout of
697	>	* {@code timeoutMillis()}.
698	>	*/
699	>	void assertFutureTimesOut(Future future) {
700	>	assertFutureTimesOut(future, timeoutMillis());
701	>	}
702	>
703	>	/**
704	>	* Checks that future.get times out, with the given millisecond timeout.
705	>	*/
706	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
707	>	long startTime = System.nanoTime();
708	>	try {
709	>	future.get(timeoutMillis, MILLISECONDS);
710	>	shouldThrow();
711	>	} catch (TimeoutException success) {
712	>	} catch (Exception e) {
713	>	threadUnexpectedException(e);
714	>	} finally { future.cancel(true); }
715	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
716	>	}
717	>
718	>	/**
719	>	* Fails with message "should throw exception".
720	>	*/
721	>	public void shouldThrow() {
722	>	fail("Should throw exception");
723	>	}
724
725	+	/**
726	+	* Fails with message "should throw " + exceptionName.
727	+	*/
728	+	public void shouldThrow(String exceptionName) {
729	+	fail("Should throw " + exceptionName);
730	+	}
731
732		/**
733		* The number of elements to place in collections, arrays, etc.
#	Line 134 | Line 736 | public class JSR166TestCase extends Test
736
737		// Some convenient Integer constants
738
739	<	public static final Integer zero = new Integer(0);
740	<	public static final Integer one = new Integer(1);
741	<	public static final Integer two = new Integer(2);
742	<	public static final Integer three  = new Integer(3);
739	>	public static final Integer zero  = new Integer(0);
740	>	public static final Integer one   = new Integer(1);
741	>	public static final Integer two   = new Integer(2);
742	>	public static final Integer three = new Integer(3);
743		public static final Integer four  = new Integer(4);
744		public static final Integer five  = new Integer(5);
745	<	public static final Integer six = new Integer(6);
745	>	public static final Integer six   = new Integer(6);
746		public static final Integer seven = new Integer(7);
747		public static final Integer eight = new Integer(8);
748	<	public static final Integer nine = new Integer(9);
748	>	public static final Integer nine  = new Integer(9);
749		public static final Integer m1  = new Integer(-1);
750		public static final Integer m2  = new Integer(-2);
751		public static final Integer m3  = new Integer(-3);
752	<	public static final Integer m4 = new Integer(-4);
753	<	public static final Integer m5 = new Integer(-5);
752	>	public static final Integer m4  = new Integer(-4);
753	>	public static final Integer m5  = new Integer(-5);
754	>	public static final Integer m6  = new Integer(-6);
755		public static final Integer m10 = new Integer(-10);
756
757	+	/**
758	+	* Runs Runnable r with a security policy that permits precisely
759	+	* the specified permissions.  If there is no current security
760	+	* manager, the runnable is run twice, both with and without a
761	+	* security manager.  We require that any security manager permit
762	+	* getPolicy/setPolicy.
763	+	*/
764	+	public void runWithPermissions(Runnable r, Permission... permissions) {
765	+	SecurityManager sm = System.getSecurityManager();
766	+	if (sm == null) {
767	+	r.run();
768	+	}
769	+	runWithSecurityManagerWithPermissions(r, permissions);
770	+	}
771
772	<	// Some convenient Runnable classes
772	>	/**
773	>	* Runs Runnable r with a security policy that permits precisely
774	>	* the specified permissions.  If there is no current security
775	>	* manager, a temporary one is set for the duration of the
776	>	* Runnable.  We require that any security manager permit
777	>	* getPolicy/setPolicy.
778	>	*/
779	>	public void runWithSecurityManagerWithPermissions(Runnable r,
780	>	Permission... permissions) {
781	>	SecurityManager sm = System.getSecurityManager();
782	>	if (sm == null) {
783	>	Policy savedPolicy = Policy.getPolicy();
784	>	try {
785	>	Policy.setPolicy(permissivePolicy());
786	>	System.setSecurityManager(new SecurityManager());
787	>	runWithSecurityManagerWithPermissions(r, permissions);
788	>	} finally {
789	>	System.setSecurityManager(null);
790	>	Policy.setPolicy(savedPolicy);
791	>	}
792	>	} else {
793	>	Policy savedPolicy = Policy.getPolicy();
794	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
795	>	Policy.setPolicy(policy);
796
797	<	public static class NoOpRunnable implements Runnable {
798	<	public void run() {}
797	>	try {
798	>	r.run();
799	>	} finally {
800	>	policy.addPermission(new SecurityPermission("setPolicy"));
801	>	Policy.setPolicy(savedPolicy);
802	>	}
803	>	}
804		}
805
806	<	public static class NoOpCallable implements Callable {
807	<	public Object call() { return Boolean.TRUE; }
806	>	/**
807	>	* Runs a runnable without any permissions.
808	>	*/
809	>	public void runWithoutPermissions(Runnable r) {
810	>	runWithPermissions(r);
811		}
812
813	<	public class ShortRunnable implements Runnable {
814	<	public void run() {
815	<	try {
816	<	Thread.sleep(SHORT_DELAY_MS);
813	>	/**
814	>	* A security policy where new permissions can be dynamically added
815	>	* or all cleared.
816	>	*/
817	>	public static class AdjustablePolicy extends java.security.Policy {
818	>	Permissions perms = new Permissions();
819	>	AdjustablePolicy(Permission... permissions) {
820	>	for (Permission permission : permissions)
821	>	perms.add(permission);
822	>	}
823	>	void addPermission(Permission perm) { perms.add(perm); }
824	>	void clearPermissions() { perms = new Permissions(); }
825	>	public PermissionCollection getPermissions(CodeSource cs) {
826	>	return perms;
827	>	}
828	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
829	>	return perms;
830	>	}
831	>	public boolean implies(ProtectionDomain pd, Permission p) {
832	>	return perms.implies(p);
833	>	}
834	>	public void refresh() {}
835	>	public String toString() {
836	>	List<Permission> ps = new ArrayList<Permission>();
837	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
838	>	ps.add(e.nextElement());
839	>	return "AdjustablePolicy with permissions " + ps;
840	>	}
841	>	}
842	>
843	>	/**
844	>	* Returns a policy containing all the permissions we ever need.
845	>	*/
846	>	public static Policy permissivePolicy() {
847	>	return new AdjustablePolicy
848	>	// Permissions j.u.c. needs directly
849	>	(new RuntimePermission("modifyThread"),
850	>	new RuntimePermission("getClassLoader"),
851	>	new RuntimePermission("setContextClassLoader"),
852	>	// Permissions needed to change permissions!
853	>	new SecurityPermission("getPolicy"),
854	>	new SecurityPermission("setPolicy"),
855	>	new RuntimePermission("setSecurityManager"),
856	>	// Permissions needed by the junit test harness
857	>	new RuntimePermission("accessDeclaredMembers"),
858	>	new PropertyPermission("*", "read"),
859	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
860	>	}
861	>
862	>	/**
863	>	* Sleeps until the given time has elapsed.
864	>	* Throws AssertionFailedError if interrupted.
865	>	*/
866	>	void sleep(long millis) {
867	>	try {
868	>	delay(millis);
869	>	} catch (InterruptedException ie) {
870	>	AssertionFailedError afe =
871	>	new AssertionFailedError("Unexpected InterruptedException");
872	>	afe.initCause(ie);
873	>	throw afe;
874	>	}
875	>	}
876	>
877	>	/**
878	>	* Spin-waits up to the specified number of milliseconds for the given
879	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
880	>	*/
881	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
882	>	long startTime = System.nanoTime();
883	>	for (;;) {
884	>	Thread.State s = thread.getState();
885	>	if (s == Thread.State.BLOCKED ||
886	>	s == Thread.State.WAITING ||
887	>	s == Thread.State.TIMED_WAITING)
888	>	return;
889	>	else if (s == Thread.State.TERMINATED)
890	>	fail("Unexpected thread termination");
891	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
892	>	threadAssertTrue(thread.isAlive());
893	>	return;
894		}
895	<	catch(Exception e) {
896	<	threadFail("unexpectedException");
895	>	Thread.yield();
896	>	}
897	>	}
898	>
899	>	/**
900	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
901	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
902	>	*/
903	>	void waitForThreadToEnterWaitState(Thread thread) {
904	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
905	>	}
906	>
907	>	/**
908	>	* Returns the number of milliseconds since time given by
909	>	* startNanoTime, which must have been previously returned from a
910	>	* call to {@link System.nanoTime()}.
911	>	*/
912	>	static long millisElapsedSince(long startNanoTime) {
913	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
914	>	}
915	>
916	>	/**
917	>	* Returns a new started daemon Thread running the given runnable.
918	>	*/
919	>	Thread newStartedThread(Runnable runnable) {
920	>	Thread t = new Thread(runnable);
921	>	t.setDaemon(true);
922	>	t.start();
923	>	return t;
924	>	}
925	>
926	>	/**
927	>	* Waits for the specified time (in milliseconds) for the thread
928	>	* to terminate (using {@link Thread#join(long)}), else interrupts
929	>	* the thread (in the hope that it may terminate later) and fails.
930	>	*/
931	>	void awaitTermination(Thread t, long timeoutMillis) {
932	>	try {
933	>	t.join(timeoutMillis);
934	>	} catch (InterruptedException ie) {
935	>	threadUnexpectedException(ie);
936	>	} finally {
937	>	if (t.getState() != Thread.State.TERMINATED) {
938	>	t.interrupt();
939	>	fail("Test timed out");
940		}
941		}
942		}
943
944	<	public class ShortInterruptedRunnable implements Runnable {
945	<	public void run() {
944	>	/**
945	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
946	>	* terminate (using {@link Thread#join(long)}), else interrupts
947	>	* the thread (in the hope that it may terminate later) and fails.
948	>	*/
949	>	void awaitTermination(Thread t) {
950	>	awaitTermination(t, LONG_DELAY_MS);
951	>	}
952	>
953	>	// Some convenient Runnable classes
954	>
955	>	public abstract class CheckedRunnable implements Runnable {
956	>	protected abstract void realRun() throws Throwable;
957	>
958	>	public final void run() {
959		try {
960	<	Thread.sleep(SHORT_DELAY_MS);
961	<	threadFail("should throw IE");
960	>	realRun();
961	>	} catch (Throwable t) {
962	>	threadUnexpectedException(t);
963		}
964	<	catch(InterruptedException success) {
964	>	}
965	>	}
966	>
967	>	public abstract class RunnableShouldThrow implements Runnable {
968	>	protected abstract void realRun() throws Throwable;
969	>
970	>	final Class<?> exceptionClass;
971	>
972	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
973	>	this.exceptionClass = exceptionClass;
974	>	}
975	>
976	>	public final void run() {
977	>	try {
978	>	realRun();
979	>	threadShouldThrow(exceptionClass.getSimpleName());
980	>	} catch (Throwable t) {
981	>	if (! exceptionClass.isInstance(t))
982	>	threadUnexpectedException(t);
983		}
984		}
985		}
986
987	<	public class SmallRunnable implements Runnable {
988	<	public void run() {
987	>	public abstract class ThreadShouldThrow extends Thread {
988	>	protected abstract void realRun() throws Throwable;
989	>
990	>	final Class<?> exceptionClass;
991	>
992	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
993	>	this.exceptionClass = exceptionClass;
994	>	}
995	>
996	>	public final void run() {
997		try {
998	<	Thread.sleep(SMALL_DELAY_MS);
998	>	realRun();
999	>	threadShouldThrow(exceptionClass.getSimpleName());
1000	>	} catch (Throwable t) {
1001	>	if (! exceptionClass.isInstance(t))
1002	>	threadUnexpectedException(t);
1003		}
1004	<	catch(Exception e) {
1005	<	threadFail("unexpectedException");
1004	>	}
1005	>	}
1006	>
1007	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1008	>	protected abstract void realRun() throws Throwable;
1009	>
1010	>	public final void run() {
1011	>	try {
1012	>	realRun();
1013	>	threadShouldThrow("InterruptedException");
1014	>	} catch (InterruptedException success) {
1015	>	threadAssertFalse(Thread.interrupted());
1016	>	} catch (Throwable t) {
1017	>	threadUnexpectedException(t);
1018		}
1019		}
1020		}
1021
1022	<	public class SmallCallable implements Callable {
1023	<	public Object call() {
1022	>	public abstract class CheckedCallable<T> implements Callable<T> {
1023	>	protected abstract T realCall() throws Throwable;
1024	>
1025	>	public final T call() {
1026		try {
1027	<	Thread.sleep(SMALL_DELAY_MS);
1027	>	return realCall();
1028	>	} catch (Throwable t) {
1029	>	threadUnexpectedException(t);
1030	>	return null;
1031		}
1032	<	catch(Exception e) {
1033	<	threadFail("unexpectedException");
1032	>	}
1033	>	}
1034	>
1035	>	public abstract class CheckedInterruptedCallable<T>
1036	>	implements Callable<T> {
1037	>	protected abstract T realCall() throws Throwable;
1038	>
1039	>	public final T call() {
1040	>	try {
1041	>	T result = realCall();
1042	>	threadShouldThrow("InterruptedException");
1043	>	return result;
1044	>	} catch (InterruptedException success) {
1045	>	threadAssertFalse(Thread.interrupted());
1046	>	} catch (Throwable t) {
1047	>	threadUnexpectedException(t);
1048		}
1049	+	return null;
1050	+	}
1051	+	}
1052	+
1053	+	public static class NoOpRunnable implements Runnable {
1054	+	public void run() {}
1055	+	}
1056	+
1057	+	public static class NoOpCallable implements Callable {
1058	+	public Object call() { return Boolean.TRUE; }
1059	+	}
1060	+
1061	+	public static final String TEST_STRING = "a test string";
1062	+
1063	+	public static class StringTask implements Callable<String> {
1064	+	public String call() { return TEST_STRING; }
1065	+	}
1066	+
1067	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1068	+	return new CheckedCallable<String>() {
1069	+	protected String realCall() {
1070	+	try {
1071	+	latch.await();
1072	+	} catch (InterruptedException quittingTime) {}
1073	+	return TEST_STRING;
1074	+	}};
1075	+	}
1076	+
1077	+	public Runnable awaiter(final CountDownLatch latch) {
1078	+	return new CheckedRunnable() {
1079	+	public void realRun() throws InterruptedException {
1080	+	await(latch);
1081	+	}};
1082	+	}
1083	+
1084	+	public void await(CountDownLatch latch) {
1085	+	try {
1086	+	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1087	+	} catch (Throwable t) {
1088	+	threadUnexpectedException(t);
1089	+	}
1090	+	}
1091	+
1092	+	public void await(Semaphore semaphore) {
1093	+	try {
1094	+	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1095	+	} catch (Throwable t) {
1096	+	threadUnexpectedException(t);
1097	+	}
1098	+	}
1099	+
1100	+	//     /**
1101	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1102	+	//      */
1103	+	//     public void await(AtomicBoolean flag) {
1104	+	//         await(flag, LONG_DELAY_MS);
1105	+	//     }
1106	+
1107	+	//     /**
1108	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1109	+	//      */
1110	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1111	+	//         long startTime = System.nanoTime();
1112	+	//         while (!flag.get()) {
1113	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1114	+	//                 throw new AssertionFailedError("timed out");
1115	+	//             Thread.yield();
1116	+	//         }
1117	+	//     }
1118	+
1119	+	public static class NPETask implements Callable<String> {
1120	+	public String call() { throw new NullPointerException(); }
1121	+	}
1122	+
1123	+	public static class CallableOne implements Callable<Integer> {
1124	+	public Integer call() { return one; }
1125	+	}
1126	+
1127	+	public class ShortRunnable extends CheckedRunnable {
1128	+	protected void realRun() throws Throwable {
1129	+	delay(SHORT_DELAY_MS);
1130	+	}
1131	+	}
1132	+
1133	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1134	+	protected void realRun() throws InterruptedException {
1135	+	delay(SHORT_DELAY_MS);
1136	+	}
1137	+	}
1138	+
1139	+	public class SmallRunnable extends CheckedRunnable {
1140	+	protected void realRun() throws Throwable {
1141	+	delay(SMALL_DELAY_MS);
1142	+	}
1143	+	}
1144	+
1145	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1146	+	protected void realRun() {
1147	+	try {
1148	+	delay(SMALL_DELAY_MS);
1149	+	} catch (InterruptedException ok) {}
1150	+	}
1151	+	}
1152	+
1153	+	public class SmallCallable extends CheckedCallable {
1154	+	protected Object realCall() throws InterruptedException {
1155	+	delay(SMALL_DELAY_MS);
1156		return Boolean.TRUE;
1157		}
1158		}
1159
1160	<	public class SmallInterruptedRunnable implements Runnable {
1160	>	public class MediumRunnable extends CheckedRunnable {
1161	>	protected void realRun() throws Throwable {
1162	>	delay(MEDIUM_DELAY_MS);
1163	>	}
1164	>	}
1165	>
1166	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1167	>	protected void realRun() throws InterruptedException {
1168	>	delay(MEDIUM_DELAY_MS);
1169	>	}
1170	>	}
1171	>
1172	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1173	>	return new CheckedRunnable() {
1174	>	protected void realRun() {
1175	>	try {
1176	>	delay(timeoutMillis);
1177	>	} catch (InterruptedException ok) {}
1178	>	}};
1179	>	}
1180	>
1181	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1182	>	protected void realRun() {
1183	>	try {
1184	>	delay(MEDIUM_DELAY_MS);
1185	>	} catch (InterruptedException ok) {}
1186	>	}
1187	>	}
1188	>
1189	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1190	>	protected void realRun() {
1191	>	try {
1192	>	delay(LONG_DELAY_MS);
1193	>	} catch (InterruptedException ok) {}
1194	>	}
1195	>	}
1196	>
1197	>	/**
1198	>	* For use as ThreadFactory in constructors
1199	>	*/
1200	>	public static class SimpleThreadFactory implements ThreadFactory {
1201	>	public Thread newThread(Runnable r) {
1202	>	return new Thread(r);
1203	>	}
1204	>	}
1205	>
1206	>	public interface TrackedRunnable extends Runnable {
1207	>	boolean isDone();
1208	>	}
1209	>
1210	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1211	>	return new TrackedRunnable() {
1212	>	private volatile boolean done = false;
1213	>	public boolean isDone() { return done; }
1214	>	public void run() {
1215	>	try {
1216	>	delay(timeoutMillis);
1217	>	done = true;
1218	>	} catch (InterruptedException ok) {}
1219	>	}
1220	>	};
1221	>	}
1222	>
1223	>	public static class TrackedShortRunnable implements Runnable {
1224	>	public volatile boolean done = false;
1225		public void run() {
1226		try {
1227	<	Thread.sleep(SMALL_DELAY_MS);
1228	<	threadFail("should throw IE");
1229	<	}
216	<	catch(InterruptedException success) {
217	<	}
1227	>	delay(SHORT_DELAY_MS);
1228	>	done = true;
1229	>	} catch (InterruptedException ok) {}
1230		}
1231		}
1232
1233	+	public static class TrackedSmallRunnable implements Runnable {
1234	+	public volatile boolean done = false;
1235	+	public void run() {
1236	+	try {
1237	+	delay(SMALL_DELAY_MS);
1238	+	done = true;
1239	+	} catch (InterruptedException ok) {}
1240	+	}
1241	+	}
1242
1243	<	public class MediumRunnable implements Runnable {
1243	>	public static class TrackedMediumRunnable implements Runnable {
1244	>	public volatile boolean done = false;
1245		public void run() {
1246		try {
1247	<	Thread.sleep(MEDIUM_DELAY_MS);
1248	<	}
1249	<	catch(Exception e) {
1250	<	threadFail("unexpectedException");
1251	<	}
1247	>	delay(MEDIUM_DELAY_MS);
1248	>	done = true;
1249	>	} catch (InterruptedException ok) {}
1250	>	}
1251	>	}
1252	>
1253	>	public static class TrackedLongRunnable implements Runnable {
1254	>	public volatile boolean done = false;
1255	>	public void run() {
1256	>	try {
1257	>	delay(LONG_DELAY_MS);
1258	>	done = true;
1259	>	} catch (InterruptedException ok) {}
1260		}
1261		}
1262
1263	<	public class MediumInterruptedRunnable implements Runnable {
1263	>	public static class TrackedNoOpRunnable implements Runnable {
1264	>	public volatile boolean done = false;
1265		public void run() {
1266	+	done = true;
1267	+	}
1268	+	}
1269	+
1270	+	public static class TrackedCallable implements Callable {
1271	+	public volatile boolean done = false;
1272	+	public Object call() {
1273	+	try {
1274	+	delay(SMALL_DELAY_MS);
1275	+	done = true;
1276	+	} catch (InterruptedException ok) {}
1277	+	return Boolean.TRUE;
1278	+	}
1279	+	}
1280	+
1281	+	/**
1282	+	* Analog of CheckedRunnable for RecursiveAction
1283	+	*/
1284	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1285	+	protected abstract void realCompute() throws Throwable;
1286	+
1287	+	@Override protected final void compute() {
1288		try {
1289	<	Thread.sleep(MEDIUM_DELAY_MS);
1290	<	threadFail("should throw IE");
1289	>	realCompute();
1290	>	} catch (Throwable t) {
1291	>	threadUnexpectedException(t);
1292		}
1293	<	catch(InterruptedException success) {
1293	>	}
1294	>	}
1295	>
1296	>	/**
1297	>	* Analog of CheckedCallable for RecursiveTask
1298	>	*/
1299	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1300	>	protected abstract T realCompute() throws Throwable;
1301	>
1302	>	@Override protected final T compute() {
1303	>	try {
1304	>	return realCompute();
1305	>	} catch (Throwable t) {
1306	>	threadUnexpectedException(t);
1307	>	return null;
1308		}
1309		}
1310		}
1311
1312	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1313	<	public void run() {
1312	>	/**
1313	>	* For use as RejectedExecutionHandler in constructors
1314	>	*/
1315	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1316	>	public void rejectedExecution(Runnable r,
1317	>	ThreadPoolExecutor executor) {}
1318	>	}
1319	>
1320	>	/**
1321	>	* A CyclicBarrier that uses timed await and fails with
1322	>	* AssertionFailedErrors instead of throwing checked exceptions.
1323	>	*/
1324	>	public class CheckedBarrier extends CyclicBarrier {
1325	>	public CheckedBarrier(int parties) { super(parties); }
1326	>
1327	>	public int await() {
1328		try {
1329	<	Thread.sleep(MEDIUM_DELAY_MS);
1329	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1330	>	} catch (TimeoutException e) {
1331	>	throw new AssertionFailedError("timed out");
1332	>	} catch (Exception e) {
1333	>	AssertionFailedError afe =
1334	>	new AssertionFailedError("Unexpected exception: " + e);
1335	>	afe.initCause(e);
1336	>	throw afe;
1337		}
1338	<	catch(InterruptedException success) {
1338	>	}
1339	>	}
1340	>
1341	>	void checkEmpty(BlockingQueue q) {
1342	>	try {
1343	>	assertTrue(q.isEmpty());
1344	>	assertEquals(0, q.size());
1345	>	assertNull(q.peek());
1346	>	assertNull(q.poll());
1347	>	assertNull(q.poll(0, MILLISECONDS));
1348	>	assertEquals(q.toString(), "[]");
1349	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1350	>	assertFalse(q.iterator().hasNext());
1351	>	try {
1352	>	q.element();
1353	>	shouldThrow();
1354	>	} catch (NoSuchElementException success) {}
1355	>	try {
1356	>	q.iterator().next();
1357	>	shouldThrow();
1358	>	} catch (NoSuchElementException success) {}
1359	>	try {
1360	>	q.remove();
1361	>	shouldThrow();
1362	>	} catch (NoSuchElementException success) {}
1363	>	} catch (InterruptedException ie) {
1364	>	threadUnexpectedException(ie);
1365	>	}
1366	>	}
1367	>
1368	>	void assertSerialEquals(Object x, Object y) {
1369	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1370	>	}
1371	>
1372	>	void assertNotSerialEquals(Object x, Object y) {
1373	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1374	>	}
1375	>
1376	>	byte[] serialBytes(Object o) {
1377	>	try {
1378	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1379	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1380	>	oos.writeObject(o);
1381	>	oos.flush();
1382	>	oos.close();
1383	>	return bos.toByteArray();
1384	>	} catch (Throwable t) {
1385	>	threadUnexpectedException(t);
1386	>	return new byte[0];
1387	>	}
1388	>	}
1389	>
1390	>	@SuppressWarnings("unchecked")
1391	>	<T> T serialClone(T o) {
1392	>	try {
1393	>	ObjectInputStream ois = new ObjectInputStream
1394	>	(new ByteArrayInputStream(serialBytes(o)));
1395	>	T clone = (T) ois.readObject();
1396	>	assertSame(o.getClass(), clone.getClass());
1397	>	return clone;
1398	>	} catch (Throwable t) {
1399	>	threadUnexpectedException(t);
1400	>	return null;
1401	>	}
1402	>	}
1403	>
1404	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1405	>	Runnable... throwingActions) {
1406	>	for (Runnable throwingAction : throwingActions) {
1407	>	boolean threw = false;
1408	>	try { throwingAction.run(); }
1409	>	catch (Throwable t) {
1410	>	threw = true;
1411	>	if (!expectedExceptionClass.isInstance(t)) {
1412	>	AssertionFailedError afe =
1413	>	new AssertionFailedError
1414	>	("Expected " + expectedExceptionClass.getName() +
1415	>	", got " + t.getClass().getName());
1416	>	afe.initCause(t);
1417	>	threadUnexpectedException(afe);
1418	>	}
1419		}
1420	+	if (!threw)
1421	+	shouldThrow(expectedExceptionClass.getName());
1422		}
1423		}
253	–
1424		}

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