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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.20 by dl, Sun Jan 11 23:20:21 2004 UTC vs.
Revision 1.114 by jsr166, Tue Sep 17 06:38:36 2013 UTC

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

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