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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.27 by jsr166, Thu May 12 03:20:56 2005 UTC vs.
Revision 1.119 by jsr166, Mon Jun 16 20:13:54 2014 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
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,
#	Line 25 | Line 48 | import java.security.*;
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
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
#	Line 47 | Line 70 | import java.security.*;
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 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, 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	+	* The number of milliseconds that tests are permitted for
134	+	* execution without being reported, when profileTests is set.
135	+	*/
136	+	private static final long profileThreshold =
137	+	Long.getLong("jsr166.profileThreshold", 100);
138	+
139		/**
140	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
140	>	* The number of repetitions per test (for tickling rare bugs).
141		*/
142	<	public static void main (String[] args) {
143	<	int iters = 1;
144	<	if (args.length > 0)
145	<	iters = Integer.parseInt(args[0]);
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	>	* 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 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);
197	>	junit.textui.TestRunner.run(s);
198		System.gc();
199		System.runFinalization();
200		}
201		System.exit(0);
202		}
203
204	<	/**
205	<	* Collects all JSR166 unit tests as one suite
206	<	*/
207	<	public static Test suite ( ) {
208	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
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	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
218	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
219	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
220	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
221	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
222	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
223	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
224	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
225	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
226	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
227	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
228	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
229	<	suite.addTest(new TestSuite(AtomicLongTest.class));
230	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
231	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
232	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
233	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
234	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
235	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
236	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
237	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
238	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
239	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
240	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
241	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
242	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
243	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
244	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
245	<	suite.addTest(new TestSuite(DelayQueueTest.class));
246	<	suite.addTest(new TestSuite(ExchangerTest.class));
247	<	suite.addTest(new TestSuite(ExecutorsTest.class));
248	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
249	<	suite.addTest(new TestSuite(FutureTaskTest.class));
250	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
251	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
252	<	suite.addTest(new TestSuite(LinkedListTest.class));
253	<	suite.addTest(new TestSuite(LockSupportTest.class));
254	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
255	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
256	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
257	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
258	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
259	<	suite.addTest(new TestSuite(SemaphoreTest.class));
260	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
261	<	suite.addTest(new TestSuite(SystemTest.class));
262	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
263	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
264	<	suite.addTest(new TestSuite(ThreadTest.class));
265	<	suite.addTest(new TestSuite(TimeUnitTest.class));
266	<	suite.addTest(new TestSuite(TreeMapTest.class));
267	<	suite.addTest(new TestSuite(TreeSetTest.class));
268	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
269	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
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
174	–
365		/**
366		* Returns the shortest timed delay. This could
367		* be reimplemented to use for example a Property.
#	Line 180 | Line 370 | public class JSR166TestCase extends Test
370		return 50;
371		}
372
183	–
373		/**
374		* Sets delays as multiples of SHORT_DELAY.
375		*/
376	<	protected  void setDelays() {
376	>	protected void setDelays() {
377		SHORT_DELAY_MS = getShortDelay();
378	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
378	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
379		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
380	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
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	<	* Flag set true if any threadAssert methods fail
392	>	* Returns a new Date instance representing a time delayMillis
393	>	* milliseconds in the future.
394		*/
395	<	volatile boolean threadFailed;
395	>	Date delayedDate(long delayMillis) {
396	>	return new Date(System.currentTimeMillis() + delayMillis);
397	>	}
398
399		/**
400	<	* Initializes test to indicate that no thread assertions have failed
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();
204	–	threadFailed = false;
417		}
418
419		/**
420	<	* Triggers test case failure if any thread assertions have failed
421	<	*/
422	<	public void tearDown() {
423	<	assertFalse(threadFailed);
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	<	* Fail, also setting status to indicate current testcase should fail
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	<	* If expression not true, set status to indicate current testcase
488	<	* should fail
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) {
228	<	threadFailed = true;
492	>	try {
493		assertTrue(b);
494	+	} catch (AssertionFailedError t) {
495	+	threadRecordFailure(t);
496	+	throw t;
497		}
498		}
499
500		/**
501	<	* If expression not false, set status to indicate current testcase
502	<	* should fail
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) {
239	<	threadFailed = true;
506	>	try {
507		assertFalse(b);
508	+	} catch (AssertionFailedError t) {
509	+	threadRecordFailure(t);
510	+	throw t;
511		}
512		}
513
514		/**
515	<	* If argument not null, set status to indicate current testcase
516	<	* should fail
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) {
250	<	threadFailed = true;
520	>	try {
521		assertNull(x);
522	+	} catch (AssertionFailedError t) {
523	+	threadRecordFailure(t);
524	+	throw t;
525		}
526		}
527
528		/**
529	<	* If arguments not equal, set status to indicate current testcase
530	<	* should fail
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) {
261	<	threadFailed = true;
534	>	try {
535		assertEquals(x, y);
536	+	} catch (AssertionFailedError t) {
537	+	threadRecordFailure(t);
538	+	throw t;
539		}
540		}
541
542		/**
543	<	* If arguments not equal, set status to indicate current testcase
544	<	* should fail
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))) {
272	<	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	<	* threadFail with message "should throw exception"
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	<	threadFailed = true;
577	<	fail("should throw exception");
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	<	* threadFail with message "Unexpected exception"
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() {
592	<	threadFailed = true;
593	<	fail("Unexpected exception");
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	+	* 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	+	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	<	* Wait out termination of a thread pool or fail doing so
628	>	* Waits out termination of a thread pool or fails doing so.
629		*/
630	<	public void joinPool(ExecutorService exec) {
630	>	void joinPool(ExecutorService exec) {
631		try {
632		exec.shutdown();
633	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
634	<	} catch(SecurityException ok) {
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 exception");
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	+	/**
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	<	* fail with message "should throw exception"
719	>	* Fails with message "should throw exception".
720		*/
721		public void shouldThrow() {
722		fail("Should throw exception");
723		}
724
725		/**
726	<	* fail with message "Unexpected exception"
726	>	* Fails with message "should throw " + exceptionName.
727		*/
728	<	public void unexpectedException() {
729	<	fail("Unexpected exception");
728	>	public void shouldThrow(String exceptionName) {
729	>	fail("Should throw " + exceptionName);
730		}
731
323	–
732		/**
733		* The number of elements to place in collections, arrays, etc.
734		*/
735	<	static final int SIZE = 20;
735	>	public static final int SIZE = 20;
736
737		// Some convenient Integer constants
738
739	<	static final Integer zero = new Integer(0);
740	<	static final Integer one = new Integer(1);
741	<	static final Integer two = new Integer(2);
742	<	static final Integer three  = new Integer(3);
743	<	static final Integer four  = new Integer(4);
744	<	static final Integer five  = new Integer(5);
745	<	static final Integer six = new Integer(6);
746	<	static final Integer seven = new Integer(7);
747	<	static final Integer eight = new Integer(8);
748	<	static final Integer nine = new Integer(9);
749	<	static final Integer m1  = new Integer(-1);
750	<	static final Integer m2  = new Integer(-2);
751	<	static final Integer m3  = new Integer(-3);
752	<	static final Integer m4 = new Integer(-4);
753	<	static final Integer m5 = new Integer(-5);
754	<	static final Integer m10 = new Integer(-10);
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);
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);
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);
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	>	/**
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	+	try {
798	+	r.run();
799	+	} finally {
800	+	policy.addPermission(new SecurityPermission("setPolicy"));
801	+	Policy.setPolicy(savedPolicy);
802	+	}
803	+	}
804	+	}
805	+
806	+	/**
807	+	* Runs a runnable without any permissions.
808	+	*/
809	+	public void runWithoutPermissions(Runnable r) {
810	+	runWithPermissions(r);
811	+	}
812
813		/**
814		* A security policy where new permissions can be dynamically added
815		* or all cleared.
816		*/
817	<	static class AdjustablePolicy extends java.security.Policy {
817	>	public static class AdjustablePolicy extends java.security.Policy {
818		Permissions perms = new Permissions();
819	<	AdjustablePolicy() { }
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() {}
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	<	// Some convenient Runnable classes
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	<	static class NoOpRunnable implements Runnable {
878	<	public void run() {}
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	>	Thread.yield();
896	>	}
897		}
898
899	<	static class NoOpCallable implements Callable {
900	<	public Object call() { return Boolean.TRUE; }
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	<	static final String TEST_STRING = "a test string";
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	<	static class StringTask implements Callable<String> {
917	<	public String call() { return TEST_STRING; }
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	<	static class NPETask implements Callable<String> {
927	<	public String call() { throw new NullPointerException(); }
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	<	static class CallableOne implements Callable<Integer> {
945	<	public Integer call() { return one; }
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	<	class ShortRunnable implements Runnable {
954	<	public void run() {
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	<	}
962	<	catch(Exception e) {
401	<	threadUnexpectedException();
960	>	realRun();
961	>	} catch (Throwable t) {
962	>	threadUnexpectedException(t);
963		}
964		}
965		}
966
967	<	class ShortInterruptedRunnable implements Runnable {
968	<	public void run() {
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	<	Thread.sleep(SHORT_DELAY_MS);
979	<	threadShouldThrow();
980	<	}
981	<	catch(InterruptedException success) {
978	>	realRun();
979	>	threadShouldThrow(exceptionClass.getSimpleName());
980	>	} catch (Throwable t) {
981	>	if (! exceptionClass.isInstance(t))
982	>	threadUnexpectedException(t);
983		}
984		}
985		}
986
987	<	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);
999	<	}
1000	<	catch(Exception e) {
1001	<	threadUnexpectedException();
998	>	realRun();
999	>	threadShouldThrow(exceptionClass.getSimpleName());
1000	>	} catch (Throwable t) {
1001	>	if (! exceptionClass.isInstance(t))
1002	>	threadUnexpectedException(t);
1003		}
1004		}
1005		}
1006
1007	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1008	<	public void run() {
1007	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1008	>	protected abstract void realRun() throws Throwable;
1009	>
1010	>	public final void run() {
1011		try {
1012	<	Thread.sleep(SMALL_DELAY_MS);
1013	<	}
1014	<	catch(Exception e) {
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	<	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);
1028	<	}
1029	<	catch(Exception e) {
1030	<	threadUnexpectedException();
1027	>	return realCall();
1028	>	} catch (Throwable t) {
1029	>	threadUnexpectedException(t);
1030	>	return null;
1031		}
446	–	return Boolean.TRUE;
1032		}
1033		}
1034
1035	<	class SmallInterruptedRunnable implements Runnable {
1036	<	public void run() {
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	<	Thread.sleep(SMALL_DELAY_MS);
1042	<	threadShouldThrow();
1043	<	}
1044	<	catch(InterruptedException success) {
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	<	class MediumRunnable implements Runnable {
1058	<	public void run() {
1059	<	try {
1060	<	Thread.sleep(MEDIUM_DELAY_MS);
1061	<	}
1062	<	catch(Exception e) {
1063	<	threadUnexpectedException();
1064	<	}
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	<	class MediumInterruptedRunnable implements Runnable {
1093	<	public void run() {
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	<	Thread.sleep(MEDIUM_DELAY_MS);
1149	<	threadShouldThrow();
478	<	}
479	<	catch(InterruptedException success) {
480	<	}
1148	>	delay(SMALL_DELAY_MS);
1149	>	} catch (InterruptedException ok) {}
1150		}
1151		}
1152
1153	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1154	<	public void run() {
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 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	<	Thread.sleep(MEDIUM_DELAY_MS);
1185	<	}
489	<	catch(InterruptedException success) {
490	<	}
1184	>	delay(MEDIUM_DELAY_MS);
1185	>	} catch (InterruptedException ok) {}
1186		}
1187		}
1188
1189	<	class LongPossiblyInterruptedRunnable implements Runnable {
1190	<	public void run() {
1189	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1190	>	protected void realRun() {
1191		try {
1192	<	Thread.sleep(LONG_DELAY_MS);
1193	<	}
499	<	catch(InterruptedException success) {
500	<	}
1192	>	delay(LONG_DELAY_MS);
1193	>	} catch (InterruptedException ok) {}
1194		}
1195		}
1196
1197		/**
1198		* For use as ThreadFactory in constructors
1199		*/
1200	<	static class SimpleThreadFactory implements ThreadFactory{
1201	<	public Thread newThread(Runnable r){
1200	>	public static class SimpleThreadFactory implements ThreadFactory {
1201	>	public Thread newThread(Runnable r) {
1202		return new Thread(r);
1203		}
1204		}
1205
1206	<	static class TrackedShortRunnable implements Runnable {
1207	<	volatile boolean done = false;
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);
1227	>	delay(SHORT_DELAY_MS);
1228		done = true;
1229	<	} catch(Exception e){
520	<	}
1229	>	} catch (InterruptedException ok) {}
1230		}
1231		}
1232
1233	<	static class TrackedMediumRunnable implements Runnable {
1234	<	volatile boolean done = false;
1233	>	public static class TrackedSmallRunnable implements Runnable {
1234	>	public volatile boolean done = false;
1235		public void run() {
1236		try {
1237	<	Thread.sleep(MEDIUM_DELAY_MS);
1237	>	delay(SMALL_DELAY_MS);
1238		done = true;
1239	<	} catch(Exception e){
531	<	}
1239	>	} catch (InterruptedException ok) {}
1240		}
1241		}
1242
1243	<	static class TrackedLongRunnable implements Runnable {
1244	<	volatile boolean done = false;
1243	>	public static class TrackedMediumRunnable implements Runnable {
1244	>	public volatile boolean done = false;
1245		public void run() {
1246		try {
1247	<	Thread.sleep(LONG_DELAY_MS);
1247	>	delay(MEDIUM_DELAY_MS);
1248		done = true;
1249	<	} catch(Exception e){
542	<	}
1249	>	} catch (InterruptedException ok) {}
1250		}
1251		}
1252
1253	<	static class TrackedNoOpRunnable implements Runnable {
1254	<	volatile boolean done = false;
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 static class TrackedNoOpRunnable implements Runnable {
1264	>	public volatile boolean done = false;
1265		public void run() {
1266		done = true;
1267		}
1268		}
1269
1270	<	static class TrackedCallable implements Callable {
1271	<	volatile boolean done = false;
1270	>	public static class TrackedCallable implements Callable {
1271	>	public volatile boolean done = false;
1272		public Object call() {
1273		try {
1274	<	Thread.sleep(SMALL_DELAY_MS);
1274	>	delay(SMALL_DELAY_MS);
1275		done = true;
1276	<	} catch(Exception e){
560	<	}
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	+	realCompute();
1290	+	} catch (Throwable t) {
1291	+	threadUnexpectedException(t);
1292	+	}
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		/**
1313		* For use as RejectedExecutionHandler in constructors
1314		*/
1315	<	static class NoOpREHandler implements RejectedExecutionHandler{
1316	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
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	>	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	>	}
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	+	}
1424		}

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