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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.3 by dl, Sat Sep 20 18:20:08 2003 UTC vs.
Revision 1.114 by jsr166, Tue Sep 17 06:38:36 2013 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by members of JCP JSR-166 Expert Group and released to the
3	<	* public domain. Use, modify, and redistribute this code in any way
4	<	* without acknowledgement. Other contributors include Andrew Wright,
5	<	* Jeffrey Hayes, Pat Fischer, Mike Judd.
2	>	* Written by Doug Lea with assistance from members of JCP JSR-166
3	>	* Expert Group and released to the public domain, as explained at
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9		import junit.framework.*;
10	<	import java.util.*;
10	>	import java.io.ByteArrayInputStream;
11	>	import java.io.ByteArrayOutputStream;
12	>	import java.io.ObjectInputStream;
13	>	import java.io.ObjectOutputStream;
14	>	import java.lang.management.ManagementFactory;
15	>	import java.lang.management.ThreadInfo;
16	>	import java.lang.reflect.Method;
17	>	import java.util.ArrayList;
18	>	import java.util.Arrays;
19	>	import java.util.Date;
20	>	import java.util.Enumeration;
21	>	import java.util.List;
22	>	import java.util.NoSuchElementException;
23	>	import java.util.PropertyPermission;
24		import java.util.concurrent.*;
25	<	import java.io.*;
26	<
25	>	import java.util.concurrent.atomic.AtomicBoolean;
26	>	import java.util.concurrent.atomic.AtomicReference;
27	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
28	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
29	>	import java.util.regex.Pattern;
30	>	import java.security.CodeSource;
31	>	import java.security.Permission;
32	>	import java.security.PermissionCollection;
33	>	import java.security.Permissions;
34	>	import java.security.Policy;
35	>	import java.security.ProtectionDomain;
36	>	import java.security.SecurityPermission;
37
38		/**
39	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
40	<	* utility methods, as well as a simple framework for helping to make
41	<	* sure that assertions failing in generated threads cause the
42	<	* associated test that generated them to itself fail (which JUnit doe
43	<	* not otherwise arrange).  The rules for creating such tests are:
39	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
40	>	* utility methods and classes, as well as a simple framework for
41	>	* helping to make sure that assertions failing in generated threads
42	>	* cause the associated test that generated them to itself fail (which
43	>	* JUnit does not otherwise arrange).  The rules for creating such
44	>	* tests are:
45		*
46		* <ol>
47		*
48		* <li> All assertions in code running in generated threads must use
49	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
50	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
51	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
49	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
50	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
51	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
52		* particularly recommended) for other code to use these forms too.
53		* Only the most typically used JUnit assertion methods are defined
54		* this way, but enough to live with.</li>
55		*
56	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
57	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
56	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
57	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
58		* them. These methods are used to clear and check for thread
59		* assertion failures.</li>
60		*
61	<	* <li>All delays and timeouts must use one of the constants {@link
62	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
63	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
64	<	* discriminatable from zero time, and always allows enough time for
65	<	* the small amounts of computation (creating a thread, calling a few
61	>	* <li>All delays and timeouts must use one of the constants {@code
62	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
63	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
64	>	* discriminable from zero time, and always allows enough time for the
65	>	* small amounts of computation (creating a thread, calling a few
66		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
67		* is always discriminable as larger than SHORT and smaller than
68		* MEDIUM.  And so on. These constants are set to conservative values,
69		* 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 {@link joinPool} method can be used to do this when
73	>	* method (or {@code fail} to do so) before returning from the
74	>	* method. The {@code joinPool} method can be used to do this when
75		* using Executors.</li>
76		*
77		* </ol>
78	+	*
79	+	* <p><b>Other notes</b>
80	+	* <ul>
81	+	*
82	+	* <li> Usually, there is one testcase method per JSR166 method
83	+	* covering "normal" operation, and then as many exception-testing
84	+	* methods as there are exceptions the method can throw. Sometimes
85	+	* there are multiple tests per JSR166 method when the different
86	+	* "normal" behaviors differ significantly. And sometimes testcases
87	+	* cover multiple methods when they cannot be tested in
88	+	* isolation.</li>
89	+	*
90	+	* <li> The documentation style for testcases is to provide as javadoc
91	+	* a simple sentence or two describing the property that the testcase
92	+	* method purports to test. The javadocs do not say anything about how
93	+	* the property is tested. To find out, read the code.</li>
94	+	*
95	+	* <li> These tests are "conformance tests", and do not attempt to
96	+	* test throughput, latency, scalability or other performance factors
97	+	* (see the separate "jtreg" tests for a set intended to check these
98	+	* for the most central aspects of functionality.) So, most tests use
99	+	* the smallest sensible numbers of threads, collection sizes, etc
100	+	* needed to check basic conformance.</li>
101	+	*
102	+	* <li>The test classes currently do not declare inclusion in
103	+	* any particular package to simplify things for people integrating
104	+	* them in TCK test suites.</li>
105	+	*
106	+	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
107	+	* runs all JSR166 unit tests.</li>
108	+	*
109	+	* </ul>
110		*/
111		public class JSR166TestCase extends TestCase {
112	+	private static final boolean useSecurityManager =
113	+	Boolean.getBoolean("jsr166.useSecurityManager");
114	+
115	+	protected static final boolean expensiveTests =
116	+	Boolean.getBoolean("jsr166.expensiveTests");
117	+
118	+	/**
119	+	* If true, 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	+	* 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);
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	+	// 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
61	–
340		/**
341	<	* Return the shortest timed delay. This could
342	<	* be reimplmented to use for example a Property.
343	<	*/
341	>	* Returns the shortest timed delay. This could
342	>	* be reimplemented to use for example a Property.
343	>	*/
344		protected long getShortDelay() {
345		return 50;
346		}
347
70	–
348		/**
349	<	* Set delays as multiples fo 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	>	* Returns a timeout in milliseconds to be used in tests that
360	>	* verify that operations block or time out.
361	>	*/
362	>	long timeoutMillis() {
363	>	return SHORT_DELAY_MS / 4;
364	>	}
365	>
366	>	/**
367	>	* Returns a new Date instance representing a time delayMillis
368	>	* milliseconds in the future.
369	>	*/
370	>	Date delayedDate(long delayMillis) {
371	>	return new Date(System.currentTimeMillis() + delayMillis);
372		}
373
374		/**
375	<	* Flag set true if any threadAssert methods fail
375	>	* The first exception encountered if any threadAssertXXX method fails.
376		*/
377	<	protected volatile boolean threadFailed;
377	>	private final AtomicReference<Throwable> threadFailure
378	>	= new AtomicReference<Throwable>(null);
379
380		/**
381	<	* Initialize test to indicat that no thread assertions have failed
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 setUp() {
386	>	public void threadRecordFailure(Throwable t) {
387	>	threadFailure.compareAndSet(null, t);
388	>	}
389	>
390	>	public void setUp() {
391		setDelays();
91	–	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	>	* 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	+	* 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) {
108	<	threadFailed = true;
467	>	try {
468		assertTrue(b);
469	+	} catch (AssertionFailedError t) {
470	+	threadRecordFailure(t);
471	+	throw t;
472		}
473		}
474	+
475	+	/**
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) {
114	<	threadFailed = true;
481	>	try {
482		assertFalse(b);
483	+	} catch (AssertionFailedError t) {
484	+	threadRecordFailure(t);
485	+	throw t;
486		}
487		}
488	+
489	+	/**
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) {
120	<	threadFailed = true;
495	>	try {
496		assertNull(x);
497	+	} catch (AssertionFailedError t) {
498	+	threadRecordFailure(t);
499	+	throw t;
500		}
501		}
502	+
503	+	/**
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) {
126	<	threadFailed = true;
509	>	try {
510		assertEquals(x, y);
511	+	} catch (AssertionFailedError t) {
512	+	threadRecordFailure(t);
513	+	throw t;
514		}
515		}
516	+
517	+	/**
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))) {
132	<	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	+	* 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;
552	<	fail("should throw exception");
551	>	threadFail("should throw exception");
552	>	}
553	>
554	>	/**
555	>	* Calls threadFail with message "should throw" + exceptionName.
556	>	*/
557	>	public void threadShouldThrow(String exceptionName) {
558	>	threadFail("should throw " + exceptionName);
559		}
560
561	<	public void threadUnexpectedException() {
562	<	threadFailed = true;
563	<	fail("Unexpected exception");
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	+	* 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	+	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	<	* Wait out termination of a thread pool or fail doing so
603	>	* Waits out termination of a thread pool or fails doing so.
604		*/
605	<	public void joinPool(ExecutorService exec) {
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	>	* 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	<
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	<	public void unexpectedException() {
701	<	fail("Unexpected exception");
700	>	/**
701	>	* Fails with message "should throw " + exceptionName.
702	>	*/
703	>	public void shouldThrow(String exceptionName) {
704	>	fail("Should throw " + exceptionName);
705		}
706
169	–
707		/**
708		* The number of elements to place in collections, arrays, etc.
709		*/
#	Line 174 | Line 711 | public class JSR166TestCase extends Test
711
712		// Some convenient Integer constants
713
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);
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);
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);
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);
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	<	// Some convenient Runnable classes
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	<	public static class NoOpRunnable implements Runnable {
773	<	public void run() {}
772	>	try {
773	>	r.run();
774	>	} finally {
775	>	policy.addPermission(new SecurityPermission("setPolicy"));
776	>	Policy.setPolicy(savedPolicy);
777	>	}
778	>	}
779		}
780
781	<	public static class NoOpCallable implements Callable {
782	<	public Object call() { return Boolean.TRUE; }
781	>	/**
782	>	* Runs a runnable without any permissions.
783	>	*/
784	>	public void runWithoutPermissions(Runnable r) {
785	>	runWithPermissions(r);
786		}
787
788	<	public class ShortRunnable implements Runnable {
789	<	public void run() {
790	<	try {
791	<	Thread.sleep(SHORT_DELAY_MS);
788	>	/**
789	>	* A security policy where new permissions can be dynamically added
790	>	* or all cleared.
791	>	*/
792	>	public static class AdjustablePolicy extends java.security.Policy {
793	>	Permissions perms = new Permissions();
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() {}
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	>	/**
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	>	/**
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	<	catch(Exception e) {
871	<	threadUnexpectedException();
870	>	Thread.yield();
871	>	}
872	>	}
873	>
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	>	/**
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	>	/**
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	>	/**
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	<	public class ShortInterruptedRunnable implements Runnable {
920	<	public void run() {
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	>	// 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	<	threadShouldThrow();
935	>	realRun();
936	>	} catch (Throwable t) {
937	>	threadUnexpectedException(t);
938		}
939	<	catch(InterruptedException success) {
939	>	}
940	>	}
941	>
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	>	realRun();
954	>	threadShouldThrow(exceptionClass.getSimpleName());
955	>	} catch (Throwable t) {
956	>	if (! exceptionClass.isInstance(t))
957	>	threadUnexpectedException(t);
958		}
959		}
960		}
961
962	<	public 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);
973	>	realRun();
974	>	threadShouldThrow(exceptionClass.getSimpleName());
975	>	} catch (Throwable t) {
976	>	if (! exceptionClass.isInstance(t))
977	>	threadUnexpectedException(t);
978		}
979	<	catch(Exception e) {
980	<	threadUnexpectedException();
979	>	}
980	>	}
981	>
982	>	public abstract class CheckedInterruptedRunnable implements Runnable {
983	>	protected abstract void realRun() throws Throwable;
984	>
985	>	public final void run() {
986	>	try {
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	<	public 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);
1002	>	return realCall();
1003	>	} catch (Throwable t) {
1004	>	threadUnexpectedException(t);
1005	>	return null;
1006		}
1007	<	catch(Exception e) {
1008	<	threadUnexpectedException();
1007	>	}
1008	>	}
1009	>
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	>	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	+	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	+	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	+	delay(SMALL_DELAY_MS);
1124	+	} catch (InterruptedException ok) {}
1125	+	}
1126	+	}
1127	+
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 SmallInterruptedRunnable implements Runnable {
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	>	delay(MEDIUM_DELAY_MS);
1160	>	} catch (InterruptedException ok) {}
1161	>	}
1162	>	}
1163	>
1164	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1165	>	protected void realRun() {
1166	>	try {
1167	>	delay(LONG_DELAY_MS);
1168	>	} catch (InterruptedException ok) {}
1169	>	}
1170	>	}
1171	>
1172	>	/**
1173	>	* For use as ThreadFactory in constructors
1174	>	*/
1175	>	public static class SimpleThreadFactory implements ThreadFactory {
1176	>	public Thread newThread(Runnable r) {
1177	>	return new Thread(r);
1178	>	}
1179	>	}
1180	>
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);
1203	<	threadShouldThrow();
1204	<	}
256	<	catch(InterruptedException success) {
257	<	}
1202	>	delay(SHORT_DELAY_MS);
1203	>	done = true;
1204	>	} catch (InterruptedException ok) {}
1205		}
1206		}
1207
1208	+	public static class TrackedSmallRunnable implements Runnable {
1209	+	public volatile boolean done = false;
1210	+	public void run() {
1211	+	try {
1212	+	delay(SMALL_DELAY_MS);
1213	+	done = true;
1214	+	} catch (InterruptedException ok) {}
1215	+	}
1216	+	}
1217
1218	<	public class MediumRunnable implements Runnable {
1218	>	public static class TrackedMediumRunnable implements Runnable {
1219	>	public volatile boolean done = false;
1220		public void run() {
1221		try {
1222	<	Thread.sleep(MEDIUM_DELAY_MS);
1223	<	}
1224	<	catch(Exception e) {
268	<	threadUnexpectedException();
269	<	}
1222	>	delay(MEDIUM_DELAY_MS);
1223	>	done = true;
1224	>	} catch (InterruptedException ok) {}
1225		}
1226		}
1227
1228	<	public class MediumInterruptedRunnable implements Runnable {
1228	>	public static class TrackedLongRunnable implements Runnable {
1229	>	public volatile boolean done = false;
1230		public void run() {
1231		try {
1232	<	Thread.sleep(MEDIUM_DELAY_MS);
1233	<	threadShouldThrow();
1232	>	delay(LONG_DELAY_MS);
1233	>	done = true;
1234	>	} catch (InterruptedException ok) {}
1235	>	}
1236	>	}
1237	>
1238	>	public static class TrackedNoOpRunnable implements Runnable {
1239	>	public volatile boolean done = false;
1240	>	public void run() {
1241	>	done = true;
1242	>	}
1243	>	}
1244	>
1245	>	public static class TrackedCallable implements Callable {
1246	>	public volatile boolean done = false;
1247	>	public Object call() {
1248	>	try {
1249	>	delay(SMALL_DELAY_MS);
1250	>	done = true;
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	<	catch(InterruptedException success) {
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	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1288	<	public void run() {
1287	>	/**
1288	>	* For use as RejectedExecutionHandler in constructors
1289	>	*/
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	<	Thread.sleep(MEDIUM_DELAY_MS);
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	<	catch(InterruptedException success) {
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		}
293	–
1399		}

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