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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.34 by jsr166, Fri Jul 31 23:53:23 2009 UTC vs.
Revision 1.121 by jsr166, Wed Jul 9 16:51:40 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(ForkJoinPoolTest.class));
218	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
219	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
220	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
221	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
222	<	suite.addTest(new TestSuite(PhaserTest.class));
223	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
224	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
225	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
226	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
227	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
228	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
229	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
230	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
231	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
232	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
233	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
234	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
235	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
236	<	suite.addTest(new TestSuite(AtomicLongTest.class));
237	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
238	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
239	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
240	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
241	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
242	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
243	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
244	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
245	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
246	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
247	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
248	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
249	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
250	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
251	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
252	<	suite.addTest(new TestSuite(DelayQueueTest.class));
253	<	suite.addTest(new TestSuite(EntryTest.class));
254	<	suite.addTest(new TestSuite(ExchangerTest.class));
255	<	suite.addTest(new TestSuite(ExecutorsTest.class));
256	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
257	<	suite.addTest(new TestSuite(FutureTaskTest.class));
258	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
259	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
260	<	suite.addTest(new TestSuite(LinkedListTest.class));
261	<	suite.addTest(new TestSuite(LockSupportTest.class));
262	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
263	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
264	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
265	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
266	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
267	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
268	<	suite.addTest(new TestSuite(SemaphoreTest.class));
269	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
270	<	suite.addTest(new TestSuite(SystemTest.class));
271	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
272	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
273	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
274	<	suite.addTest(new TestSuite(ThreadTest.class));
275	<	suite.addTest(new TestSuite(TimeUnitTest.class));
276	<	suite.addTest(new TestSuite(TreeMapTest.class));
277	<	suite.addTest(new TestSuite(TreeSetTest.class));
278	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
279	<	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
184	–
365		/**
366		* Returns the shortest timed delay. This could
367		* be reimplemented to use for example a Property.
#	Line 190 | Line 370 | public class JSR166TestCase extends Test
370		return 50;
371		}
372
193	–
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	>	* Returns a new Date instance representing a time delayMillis
393	>	* milliseconds in the future.
394	>	*/
395	>	Date delayedDate(long delayMillis) {
396	>	return new Date(System.currentTimeMillis() + delayMillis);
397		}
398
399		/**
400	<	* Flag set true if any threadAssert methods fail
400	>	* The first exception encountered if any threadAssertXXX method fails.
401		*/
402	<	volatile boolean threadFailed;
402	>	private final AtomicReference<Throwable> threadFailure
403	>	= new AtomicReference<Throwable>(null);
404
405		/**
406	<	* Initializes test to indicate that no thread assertions have failed
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();
214	–	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) {
238	<	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) {
249	<	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) {
260	<	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) {
271	<	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))) {
282	<	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 threadShouldThrow() {
563	>	public void threadAssertSame(Object x, Object y) {
564		try {
565	<	threadFailed = true;
566	<	fail("should throw exception");
567	<	} catch (AssertionFailedError e) {
568	<	e.printStackTrace();
296	<	throw e;
565	>	assertSame(x, y);
566	>	} catch (AssertionFailedError t) {
567	>	threadRecordFailure(t);
568	>	throw t;
569		}
570		}
571
572		/**
573	<	* threadFail with message "Unexpected exception"
573	>	* Calls threadFail with message "should throw exception".
574		*/
575	<	public void threadUnexpectedException() {
576	<	threadFailed = true;
577	<	fail("Unexpected exception");
575	>	public void threadShouldThrow() {
576	>	threadFail("should throw exception");
577	>	}
578	>
579	>	/**
580	>	* Calls threadFail with message "should throw" + exceptionName.
581	>	*/
582	>	public void threadShouldThrow(String exceptionName) {
583	>	threadFail("should throw " + exceptionName);
584	>	}
585	>
586	>	/**
587	>	* Records the given exception using {@link #threadRecordFailure},
588	>	* then rethrows the exception, wrapping it in an
589	>	* AssertionFailedError if necessary.
590	>	*/
591	>	public void threadUnexpectedException(Throwable t) {
592	>	threadRecordFailure(t);
593	>	t.printStackTrace();
594	>	if (t instanceof RuntimeException)
595	>	throw (RuntimeException) t;
596	>	else if (t instanceof Error)
597	>	throw (Error) t;
598	>	else {
599	>	AssertionFailedError afe =
600	>	new AssertionFailedError("unexpected exception: " + t);
601	>	afe.initCause(t);
602	>	throw afe;
603	>	}
604		}
605
606		/**
607	<	* threadFail with message "Unexpected exception", with argument
607	>	* Delays, via Thread.sleep, for the given millisecond delay, but
608	>	* if the sleep is shorter than specified, may re-sleep or yield
609	>	* until time elapses.
610		*/
611	<	public void threadUnexpectedException(Throwable ex) {
612	<	threadFailed = true;
613	<	ex.printStackTrace();
614	<	fail("Unexpected exception: " + ex);
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));
633	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
634	>	fail("ExecutorService " + exec +
635	>	" did not terminate in a timely manner");
636		} catch (SecurityException ok) {
637		// Allowed in case test doesn't have privs
638		} catch (InterruptedException ie) {
639	<	fail("Unexpected exception");
639	>	fail("Unexpected InterruptedException");
640		}
641		}
642
643	+	/**
644	+	* A debugging tool to print all stack traces, as jstack does.
645	+	*/
646	+	static void printAllStackTraces() {
647	+	for (ThreadInfo info :
648	+	ManagementFactory.getThreadMXBean()
649	+	.dumpAllThreads(true, true))
650	+	System.err.print(info);
651	+	}
652
653		/**
654	<	* fail with message "should throw exception"
654	>	* Checks that thread does not terminate within the default
655	>	* millisecond delay of {@code timeoutMillis()}.
656	>	*/
657	>	void assertThreadStaysAlive(Thread thread) {
658	>	assertThreadStaysAlive(thread, timeoutMillis());
659	>	}
660	>
661	>	/**
662	>	* Checks that thread does not terminate within the given millisecond delay.
663	>	*/
664	>	void assertThreadStaysAlive(Thread thread, long millis) {
665	>	try {
666	>	// No need to optimize the failing case via Thread.join.
667	>	delay(millis);
668	>	assertTrue(thread.isAlive());
669	>	} catch (InterruptedException ie) {
670	>	fail("Unexpected InterruptedException");
671	>	}
672	>	}
673	>
674	>	/**
675	>	* Checks that the threads do not terminate within the default
676	>	* millisecond delay of {@code timeoutMillis()}.
677	>	*/
678	>	void assertThreadsStayAlive(Thread... threads) {
679	>	assertThreadsStayAlive(timeoutMillis(), threads);
680	>	}
681	>
682	>	/**
683	>	* Checks that the threads do not terminate within the given millisecond delay.
684	>	*/
685	>	void assertThreadsStayAlive(long millis, Thread... threads) {
686	>	try {
687	>	// No need to optimize the failing case via Thread.join.
688	>	delay(millis);
689	>	for (Thread thread : threads)
690	>	assertTrue(thread.isAlive());
691	>	} catch (InterruptedException ie) {
692	>	fail("Unexpected InterruptedException");
693	>	}
694	>	}
695	>
696	>	/**
697	>	* Checks that future.get times out, with the default timeout of
698	>	* {@code timeoutMillis()}.
699	>	*/
700	>	void assertFutureTimesOut(Future future) {
701	>	assertFutureTimesOut(future, timeoutMillis());
702	>	}
703	>
704	>	/**
705	>	* Checks that future.get times out, with the given millisecond timeout.
706	>	*/
707	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
708	>	long startTime = System.nanoTime();
709	>	try {
710	>	future.get(timeoutMillis, MILLISECONDS);
711	>	shouldThrow();
712	>	} catch (TimeoutException success) {
713	>	} catch (Exception e) {
714	>	threadUnexpectedException(e);
715	>	} finally { future.cancel(true); }
716	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
717	>	}
718	>
719	>	/**
720	>	* Fails with message "should throw exception".
721		*/
722		public void shouldThrow() {
723		fail("Should throw exception");
724		}
725
726		/**
727	<	* fail with message "Unexpected exception"
727	>	* Fails with message "should throw " + exceptionName.
728		*/
729	<	public void unexpectedException() {
730	<	fail("Unexpected exception");
729	>	public void shouldThrow(String exceptionName) {
730	>	fail("Should throw " + exceptionName);
731		}
732
346	–
733		/**
734		* The number of elements to place in collections, arrays, etc.
735		*/
736	<	static final int SIZE = 20;
736	>	public static final int SIZE = 20;
737
738		// Some convenient Integer constants
739
740	<	static final Integer zero = new Integer(0);
741	<	static final Integer one = new Integer(1);
742	<	static final Integer two = new Integer(2);
743	<	static final Integer three  = new Integer(3);
744	<	static final Integer four  = new Integer(4);
745	<	static final Integer five  = new Integer(5);
746	<	static final Integer six = new Integer(6);
747	<	static final Integer seven = new Integer(7);
748	<	static final Integer eight = new Integer(8);
749	<	static final Integer nine = new Integer(9);
750	<	static final Integer m1  = new Integer(-1);
751	<	static final Integer m2  = new Integer(-2);
752	<	static final Integer m3  = new Integer(-3);
753	<	static final Integer m4 = new Integer(-4);
754	<	static final Integer m5 = new Integer(-5);
755	<	static final Integer m6 = new Integer(-6);
756	<	static final Integer m10 = new Integer(-10);
740	>	public static final Integer zero  = new Integer(0);
741	>	public static final Integer one   = new Integer(1);
742	>	public static final Integer two   = new Integer(2);
743	>	public static final Integer three = new Integer(3);
744	>	public static final Integer four  = new Integer(4);
745	>	public static final Integer five  = new Integer(5);
746	>	public static final Integer six   = new Integer(6);
747	>	public static final Integer seven = new Integer(7);
748	>	public static final Integer eight = new Integer(8);
749	>	public static final Integer nine  = new Integer(9);
750	>	public static final Integer m1  = new Integer(-1);
751	>	public static final Integer m2  = new Integer(-2);
752	>	public static final Integer m3  = new Integer(-3);
753	>	public static final Integer m4  = new Integer(-4);
754	>	public static final Integer m5  = new Integer(-5);
755	>	public static final Integer m6  = new Integer(-6);
756	>	public static final Integer m10 = new Integer(-10);
757	>
758	>	/**
759	>	* Runs Runnable r with a security policy that permits precisely
760	>	* the specified permissions.  If there is no current security
761	>	* manager, the runnable is run twice, both with and without a
762	>	* security manager.  We require that any security manager permit
763	>	* getPolicy/setPolicy.
764	>	*/
765	>	public void runWithPermissions(Runnable r, Permission... permissions) {
766	>	SecurityManager sm = System.getSecurityManager();
767	>	if (sm == null) {
768	>	r.run();
769	>	}
770	>	runWithSecurityManagerWithPermissions(r, permissions);
771	>	}
772
773	+	/**
774	+	* Runs Runnable r with a security policy that permits precisely
775	+	* the specified permissions.  If there is no current security
776	+	* manager, a temporary one is set for the duration of the
777	+	* Runnable.  We require that any security manager permit
778	+	* getPolicy/setPolicy.
779	+	*/
780	+	public void runWithSecurityManagerWithPermissions(Runnable r,
781	+	Permission... permissions) {
782	+	SecurityManager sm = System.getSecurityManager();
783	+	if (sm == null) {
784	+	Policy savedPolicy = Policy.getPolicy();
785	+	try {
786	+	Policy.setPolicy(permissivePolicy());
787	+	System.setSecurityManager(new SecurityManager());
788	+	runWithSecurityManagerWithPermissions(r, permissions);
789	+	} finally {
790	+	System.setSecurityManager(null);
791	+	Policy.setPolicy(savedPolicy);
792	+	}
793	+	} else {
794	+	Policy savedPolicy = Policy.getPolicy();
795	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
796	+	Policy.setPolicy(policy);
797	+
798	+	try {
799	+	r.run();
800	+	} finally {
801	+	policy.addPermission(new SecurityPermission("setPolicy"));
802	+	Policy.setPolicy(savedPolicy);
803	+	}
804	+	}
805	+	}
806	+
807	+	/**
808	+	* Runs a runnable without any permissions.
809	+	*/
810	+	public void runWithoutPermissions(Runnable r) {
811	+	runWithPermissions(r);
812	+	}
813
814		/**
815		* A security policy where new permissions can be dynamically added
816		* or all cleared.
817		*/
818	<	static class AdjustablePolicy extends java.security.Policy {
818	>	public static class AdjustablePolicy extends java.security.Policy {
819		Permissions perms = new Permissions();
820	<	AdjustablePolicy() { }
820	>	AdjustablePolicy(Permission... permissions) {
821	>	for (Permission permission : permissions)
822	>	perms.add(permission);
823	>	}
824		void addPermission(Permission perm) { perms.add(perm); }
825		void clearPermissions() { perms = new Permissions(); }
826	<	public PermissionCollection getPermissions(CodeSource cs) {
827	<	return perms;
828	<	}
829	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
830	<	return perms;
831	<	}
832	<	public boolean implies(ProtectionDomain pd, Permission p) {
833	<	return perms.implies(p);
834	<	}
835	<	public void refresh() {}
826	>	public PermissionCollection getPermissions(CodeSource cs) {
827	>	return perms;
828	>	}
829	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
830	>	return perms;
831	>	}
832	>	public boolean implies(ProtectionDomain pd, Permission p) {
833	>	return perms.implies(p);
834	>	}
835	>	public void refresh() {}
836	>	public String toString() {
837	>	List<Permission> ps = new ArrayList<Permission>();
838	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
839	>	ps.add(e.nextElement());
840	>	return "AdjustablePolicy with permissions " + ps;
841	>	}
842		}
843
844	+	/**
845	+	* Returns a policy containing all the permissions we ever need.
846	+	*/
847	+	public static Policy permissivePolicy() {
848	+	return new AdjustablePolicy
849	+	// Permissions j.u.c. needs directly
850	+	(new RuntimePermission("modifyThread"),
851	+	new RuntimePermission("getClassLoader"),
852	+	new RuntimePermission("setContextClassLoader"),
853	+	// Permissions needed to change permissions!
854	+	new SecurityPermission("getPolicy"),
855	+	new SecurityPermission("setPolicy"),
856	+	new RuntimePermission("setSecurityManager"),
857	+	// Permissions needed by the junit test harness
858	+	new RuntimePermission("accessDeclaredMembers"),
859	+	new PropertyPermission("*", "read"),
860	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
861	+	}
862
863	<	// Some convenient Runnable classes
863	>	/**
864	>	* Sleeps until the given time has elapsed.
865	>	* Throws AssertionFailedError if interrupted.
866	>	*/
867	>	void sleep(long millis) {
868	>	try {
869	>	delay(millis);
870	>	} catch (InterruptedException ie) {
871	>	AssertionFailedError afe =
872	>	new AssertionFailedError("Unexpected InterruptedException");
873	>	afe.initCause(ie);
874	>	throw afe;
875	>	}
876	>	}
877
878	<	static class NoOpRunnable implements Runnable {
879	<	public void run() {}
878	>	/**
879	>	* Spin-waits up to the specified number of milliseconds for the given
880	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
881	>	*/
882	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
883	>	long startTime = System.nanoTime();
884	>	for (;;) {
885	>	Thread.State s = thread.getState();
886	>	if (s == Thread.State.BLOCKED ||
887	>	s == Thread.State.WAITING ||
888	>	s == Thread.State.TIMED_WAITING)
889	>	return;
890	>	else if (s == Thread.State.TERMINATED)
891	>	fail("Unexpected thread termination");
892	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
893	>	threadAssertTrue(thread.isAlive());
894	>	return;
895	>	}
896	>	Thread.yield();
897	>	}
898		}
899
900	<	static class NoOpCallable implements Callable {
901	<	public Object call() { return Boolean.TRUE; }
900	>	/**
901	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
902	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
903	>	*/
904	>	void waitForThreadToEnterWaitState(Thread thread) {
905	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
906		}
907
908	<	static final String TEST_STRING = "a test string";
908	>	/**
909	>	* Returns the number of milliseconds since time given by
910	>	* startNanoTime, which must have been previously returned from a
911	>	* call to {@link System.nanoTime()}.
912	>	*/
913	>	static long millisElapsedSince(long startNanoTime) {
914	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
915	>	}
916
917	<	static class StringTask implements Callable<String> {
918	<	public String call() { return TEST_STRING; }
917	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
918	>	//         long startTime = System.nanoTime();
919	>	//         try {
920	>	//             r.run();
921	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
922	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
923	>	//             throw new AssertionFailedError("did not return promptly");
924	>	//     }
925	>
926	>	//     void assertTerminatesPromptly(Runnable r) {
927	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
928	>	//     }
929	>
930	>	/**
931	>	* Checks that timed f.get() returns the expected value, and does not
932	>	* wait for the timeout to elapse before returning.
933	>	*/
934	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
935	>	long startTime = System.nanoTime();
936	>	try {
937	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
938	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
939	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
940	>	throw new AssertionFailedError("timed get did not return promptly");
941		}
942
943	<	static class NPETask implements Callable<String> {
944	<	public String call() { throw new NullPointerException(); }
943	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
944	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
945		}
946
947	<	static class CallableOne implements Callable<Integer> {
948	<	public Integer call() { return one; }
947	>	/**
948	>	* Returns a new started daemon Thread running the given runnable.
949	>	*/
950	>	Thread newStartedThread(Runnable runnable) {
951	>	Thread t = new Thread(runnable);
952	>	t.setDaemon(true);
953	>	t.start();
954	>	return t;
955		}
956
957	<	class ShortRunnable implements Runnable {
958	<	public void run() {
959	<	try {
960	<	Thread.sleep(SHORT_DELAY_MS);
961	<	}
962	<	catch (Exception e) {
963	<	threadUnexpectedException(e);
957	>	/**
958	>	* Waits for the specified time (in milliseconds) for the thread
959	>	* to terminate (using {@link Thread#join(long)}), else interrupts
960	>	* the thread (in the hope that it may terminate later) and fails.
961	>	*/
962	>	void awaitTermination(Thread t, long timeoutMillis) {
963	>	try {
964	>	t.join(timeoutMillis);
965	>	} catch (InterruptedException ie) {
966	>	threadUnexpectedException(ie);
967	>	} finally {
968	>	if (t.getState() != Thread.State.TERMINATED) {
969	>	t.interrupt();
970	>	fail("Test timed out");
971		}
972		}
973		}
974
975	<	class ShortInterruptedRunnable implements Runnable {
976	<	public void run() {
975	>	/**
976	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
977	>	* terminate (using {@link Thread#join(long)}), else interrupts
978	>	* the thread (in the hope that it may terminate later) and fails.
979	>	*/
980	>	void awaitTermination(Thread t) {
981	>	awaitTermination(t, LONG_DELAY_MS);
982	>	}
983	>
984	>	// Some convenient Runnable classes
985	>
986	>	public abstract class CheckedRunnable implements Runnable {
987	>	protected abstract void realRun() throws Throwable;
988	>
989	>	public final void run() {
990		try {
991	<	Thread.sleep(SHORT_DELAY_MS);
992	<	threadShouldThrow();
993	<	}
436	<	catch (InterruptedException success) {
991	>	realRun();
992	>	} catch (Throwable t) {
993	>	threadUnexpectedException(t);
994		}
995		}
996		}
997
998	<	class SmallRunnable implements Runnable {
999	<	public void run() {
998	>	public abstract class RunnableShouldThrow implements Runnable {
999	>	protected abstract void realRun() throws Throwable;
1000	>
1001	>	final Class<?> exceptionClass;
1002	>
1003	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1004	>	this.exceptionClass = exceptionClass;
1005	>	}
1006	>
1007	>	public final void run() {
1008		try {
1009	<	Thread.sleep(SMALL_DELAY_MS);
1010	<	}
1011	<	catch (Exception e) {
1012	<	threadUnexpectedException(e);
1009	>	realRun();
1010	>	threadShouldThrow(exceptionClass.getSimpleName());
1011	>	} catch (Throwable t) {
1012	>	if (! exceptionClass.isInstance(t))
1013	>	threadUnexpectedException(t);
1014		}
1015		}
1016		}
1017
1018	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1019	<	public void run() {
1018	>	public abstract class ThreadShouldThrow extends Thread {
1019	>	protected abstract void realRun() throws Throwable;
1020	>
1021	>	final Class<?> exceptionClass;
1022	>
1023	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1024	>	this.exceptionClass = exceptionClass;
1025	>	}
1026	>
1027	>	public final void run() {
1028		try {
1029	<	Thread.sleep(SMALL_DELAY_MS);
1030	<	}
1031	<	catch (Exception e) {
1029	>	realRun();
1030	>	threadShouldThrow(exceptionClass.getSimpleName());
1031	>	} catch (Throwable t) {
1032	>	if (! exceptionClass.isInstance(t))
1033	>	threadUnexpectedException(t);
1034		}
1035		}
1036		}
1037
1038	<	class SmallCallable implements Callable {
1039	<	public Object call() {
1038	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1039	>	protected abstract void realRun() throws Throwable;
1040	>
1041	>	public final void run() {
1042		try {
1043	<	Thread.sleep(SMALL_DELAY_MS);
1044	<	}
1045	<	catch (Exception e) {
1046	<	threadUnexpectedException(e);
1043	>	realRun();
1044	>	threadShouldThrow("InterruptedException");
1045	>	} catch (InterruptedException success) {
1046	>	threadAssertFalse(Thread.interrupted());
1047	>	} catch (Throwable t) {
1048	>	threadUnexpectedException(t);
1049		}
470	–	return Boolean.TRUE;
1050		}
1051		}
1052
1053	<	class SmallInterruptedRunnable implements Runnable {
1054	<	public void run() {
1053	>	public abstract class CheckedCallable<T> implements Callable<T> {
1054	>	protected abstract T realCall() throws Throwable;
1055	>
1056	>	public final T call() {
1057		try {
1058	<	Thread.sleep(SMALL_DELAY_MS);
1059	<	threadShouldThrow();
1060	<	}
1061	<	catch (InterruptedException success) {
1058	>	return realCall();
1059	>	} catch (Throwable t) {
1060	>	threadUnexpectedException(t);
1061	>	return null;
1062		}
1063		}
1064		}
1065
1066	+	public abstract class CheckedInterruptedCallable<T>
1067	+	implements Callable<T> {
1068	+	protected abstract T realCall() throws Throwable;
1069
1070	<	class MediumRunnable implements Runnable {
487	<	public void run() {
1070	>	public final T call() {
1071		try {
1072	<	Thread.sleep(MEDIUM_DELAY_MS);
1073	<	}
1074	<	catch (Exception e) {
1075	<	threadUnexpectedException(e);
1072	>	T result = realCall();
1073	>	threadShouldThrow("InterruptedException");
1074	>	return result;
1075	>	} catch (InterruptedException success) {
1076	>	threadAssertFalse(Thread.interrupted());
1077	>	} catch (Throwable t) {
1078	>	threadUnexpectedException(t);
1079		}
1080	+	return null;
1081		}
1082		}
1083
1084	<	class MediumInterruptedRunnable implements Runnable {
1085	<	public void run() {
1084	>	public static class NoOpRunnable implements Runnable {
1085	>	public void run() {}
1086	>	}
1087	>
1088	>	public static class NoOpCallable implements Callable {
1089	>	public Object call() { return Boolean.TRUE; }
1090	>	}
1091	>
1092	>	public static final String TEST_STRING = "a test string";
1093	>
1094	>	public static class StringTask implements Callable<String> {
1095	>	public String call() { return TEST_STRING; }
1096	>	}
1097	>
1098	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1099	>	return new CheckedCallable<String>() {
1100	>	protected String realCall() {
1101	>	try {
1102	>	latch.await();
1103	>	} catch (InterruptedException quittingTime) {}
1104	>	return TEST_STRING;
1105	>	}};
1106	>	}
1107	>
1108	>	public Runnable awaiter(final CountDownLatch latch) {
1109	>	return new CheckedRunnable() {
1110	>	public void realRun() throws InterruptedException {
1111	>	await(latch);
1112	>	}};
1113	>	}
1114	>
1115	>	public void await(CountDownLatch latch) {
1116	>	try {
1117	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1118	>	} catch (Throwable t) {
1119	>	threadUnexpectedException(t);
1120	>	}
1121	>	}
1122	>
1123	>	public void await(Semaphore semaphore) {
1124	>	try {
1125	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1126	>	} catch (Throwable t) {
1127	>	threadUnexpectedException(t);
1128	>	}
1129	>	}
1130	>
1131	>	//     /**
1132	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1133	>	//      */
1134	>	//     public void await(AtomicBoolean flag) {
1135	>	//         await(flag, LONG_DELAY_MS);
1136	>	//     }
1137	>
1138	>	//     /**
1139	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1140	>	//      */
1141	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1142	>	//         long startTime = System.nanoTime();
1143	>	//         while (!flag.get()) {
1144	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1145	>	//                 throw new AssertionFailedError("timed out");
1146	>	//             Thread.yield();
1147	>	//         }
1148	>	//     }
1149	>
1150	>	public static class NPETask implements Callable<String> {
1151	>	public String call() { throw new NullPointerException(); }
1152	>	}
1153	>
1154	>	public static class CallableOne implements Callable<Integer> {
1155	>	public Integer call() { return one; }
1156	>	}
1157	>
1158	>	public class ShortRunnable extends CheckedRunnable {
1159	>	protected void realRun() throws Throwable {
1160	>	delay(SHORT_DELAY_MS);
1161	>	}
1162	>	}
1163	>
1164	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1165	>	protected void realRun() throws InterruptedException {
1166	>	delay(SHORT_DELAY_MS);
1167	>	}
1168	>	}
1169	>
1170	>	public class SmallRunnable extends CheckedRunnable {
1171	>	protected void realRun() throws Throwable {
1172	>	delay(SMALL_DELAY_MS);
1173	>	}
1174	>	}
1175	>
1176	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1177	>	protected void realRun() {
1178		try {
1179	<	Thread.sleep(MEDIUM_DELAY_MS);
1180	<	threadShouldThrow();
502	<	}
503	<	catch (InterruptedException success) {
504	<	}
1179	>	delay(SMALL_DELAY_MS);
1180	>	} catch (InterruptedException ok) {}
1181		}
1182		}
1183
1184	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1185	<	public void run() {
1184	>	public class SmallCallable extends CheckedCallable {
1185	>	protected Object realCall() throws InterruptedException {
1186	>	delay(SMALL_DELAY_MS);
1187	>	return Boolean.TRUE;
1188	>	}
1189	>	}
1190	>
1191	>	public class MediumRunnable extends CheckedRunnable {
1192	>	protected void realRun() throws Throwable {
1193	>	delay(MEDIUM_DELAY_MS);
1194	>	}
1195	>	}
1196	>
1197	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1198	>	protected void realRun() throws InterruptedException {
1199	>	delay(MEDIUM_DELAY_MS);
1200	>	}
1201	>	}
1202	>
1203	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1204	>	return new CheckedRunnable() {
1205	>	protected void realRun() {
1206	>	try {
1207	>	delay(timeoutMillis);
1208	>	} catch (InterruptedException ok) {}
1209	>	}};
1210	>	}
1211	>
1212	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1213	>	protected void realRun() {
1214		try {
1215	<	Thread.sleep(MEDIUM_DELAY_MS);
1216	<	}
513	<	catch (InterruptedException success) {
514	<	}
1215	>	delay(MEDIUM_DELAY_MS);
1216	>	} catch (InterruptedException ok) {}
1217		}
1218		}
1219
1220	<	class LongPossiblyInterruptedRunnable implements Runnable {
1221	<	public void run() {
1220	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1221	>	protected void realRun() {
1222		try {
1223	<	Thread.sleep(LONG_DELAY_MS);
1224	<	}
523	<	catch (InterruptedException success) {
524	<	}
1223	>	delay(LONG_DELAY_MS);
1224	>	} catch (InterruptedException ok) {}
1225		}
1226		}
1227
1228		/**
1229		* For use as ThreadFactory in constructors
1230		*/
1231	<	static class SimpleThreadFactory implements ThreadFactory {
1231	>	public static class SimpleThreadFactory implements ThreadFactory {
1232		public Thread newThread(Runnable r) {
1233		return new Thread(r);
1234		}
1235		}
1236
1237	<	static class TrackedShortRunnable implements Runnable {
1238	<	volatile boolean done = false;
1237	>	public interface TrackedRunnable extends Runnable {
1238	>	boolean isDone();
1239	>	}
1240	>
1241	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1242	>	return new TrackedRunnable() {
1243	>	private volatile boolean done = false;
1244	>	public boolean isDone() { return done; }
1245	>	public void run() {
1246	>	try {
1247	>	delay(timeoutMillis);
1248	>	done = true;
1249	>	} catch (InterruptedException ok) {}
1250	>	}
1251	>	};
1252	>	}
1253	>
1254	>	public static class TrackedShortRunnable implements Runnable {
1255	>	public volatile boolean done = false;
1256	>	public void run() {
1257	>	try {
1258	>	delay(SHORT_DELAY_MS);
1259	>	done = true;
1260	>	} catch (InterruptedException ok) {}
1261	>	}
1262	>	}
1263	>
1264	>	public static class TrackedSmallRunnable implements Runnable {
1265	>	public volatile boolean done = false;
1266		public void run() {
1267		try {
1268	<	Thread.sleep(SMALL_DELAY_MS);
1268	>	delay(SMALL_DELAY_MS);
1269		done = true;
1270	<	} catch (Exception e) {
544	<	}
1270	>	} catch (InterruptedException ok) {}
1271		}
1272		}
1273
1274	<	static class TrackedMediumRunnable implements Runnable {
1275	<	volatile boolean done = false;
1274	>	public static class TrackedMediumRunnable implements Runnable {
1275	>	public volatile boolean done = false;
1276		public void run() {
1277		try {
1278	<	Thread.sleep(MEDIUM_DELAY_MS);
1278	>	delay(MEDIUM_DELAY_MS);
1279		done = true;
1280	<	} catch (Exception e) {
555	<	}
1280	>	} catch (InterruptedException ok) {}
1281		}
1282		}
1283
1284	<	static class TrackedLongRunnable implements Runnable {
1285	<	volatile boolean done = false;
1284	>	public static class TrackedLongRunnable implements Runnable {
1285	>	public volatile boolean done = false;
1286		public void run() {
1287		try {
1288	<	Thread.sleep(LONG_DELAY_MS);
1288	>	delay(LONG_DELAY_MS);
1289		done = true;
1290	<	} catch (Exception e) {
566	<	}
1290	>	} catch (InterruptedException ok) {}
1291		}
1292		}
1293
1294	<	static class TrackedNoOpRunnable implements Runnable {
1295	<	volatile boolean done = false;
1294	>	public static class TrackedNoOpRunnable implements Runnable {
1295	>	public volatile boolean done = false;
1296		public void run() {
1297		done = true;
1298		}
1299		}
1300
1301	<	static class TrackedCallable implements Callable {
1302	<	volatile boolean done = false;
1301	>	public static class TrackedCallable implements Callable {
1302	>	public volatile boolean done = false;
1303		public Object call() {
1304		try {
1305	<	Thread.sleep(SMALL_DELAY_MS);
1305	>	delay(SMALL_DELAY_MS);
1306		done = true;
1307	<	} catch (Exception e) {
584	<	}
1307	>	} catch (InterruptedException ok) {}
1308		return Boolean.TRUE;
1309		}
1310		}
1311
1312	+	/**
1313	+	* Analog of CheckedRunnable for RecursiveAction
1314	+	*/
1315	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1316	+	protected abstract void realCompute() throws Throwable;
1317	+
1318	+	@Override protected final void compute() {
1319	+	try {
1320	+	realCompute();
1321	+	} catch (Throwable t) {
1322	+	threadUnexpectedException(t);
1323	+	}
1324	+	}
1325	+	}
1326	+
1327	+	/**
1328	+	* Analog of CheckedCallable for RecursiveTask
1329	+	*/
1330	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1331	+	protected abstract T realCompute() throws Throwable;
1332	+
1333	+	@Override protected final T compute() {
1334	+	try {
1335	+	return realCompute();
1336	+	} catch (Throwable t) {
1337	+	threadUnexpectedException(t);
1338	+	return null;
1339	+	}
1340	+	}
1341	+	}
1342
1343		/**
1344		* For use as RejectedExecutionHandler in constructors
1345		*/
1346	<	static class NoOpREHandler implements RejectedExecutionHandler {
1347	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1346	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1347	>	public void rejectedExecution(Runnable r,
1348	>	ThreadPoolExecutor executor) {}
1349	>	}
1350	>
1351	>	/**
1352	>	* A CyclicBarrier that uses timed await and fails with
1353	>	* AssertionFailedErrors instead of throwing checked exceptions.
1354	>	*/
1355	>	public class CheckedBarrier extends CyclicBarrier {
1356	>	public CheckedBarrier(int parties) { super(parties); }
1357	>
1358	>	public int await() {
1359	>	try {
1360	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1361	>	} catch (TimeoutException e) {
1362	>	throw new AssertionFailedError("timed out");
1363	>	} catch (Exception e) {
1364	>	AssertionFailedError afe =
1365	>	new AssertionFailedError("Unexpected exception: " + e);
1366	>	afe.initCause(e);
1367	>	throw afe;
1368	>	}
1369	>	}
1370	>	}
1371	>
1372	>	void checkEmpty(BlockingQueue q) {
1373	>	try {
1374	>	assertTrue(q.isEmpty());
1375	>	assertEquals(0, q.size());
1376	>	assertNull(q.peek());
1377	>	assertNull(q.poll());
1378	>	assertNull(q.poll(0, MILLISECONDS));
1379	>	assertEquals(q.toString(), "[]");
1380	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1381	>	assertFalse(q.iterator().hasNext());
1382	>	try {
1383	>	q.element();
1384	>	shouldThrow();
1385	>	} catch (NoSuchElementException success) {}
1386	>	try {
1387	>	q.iterator().next();
1388	>	shouldThrow();
1389	>	} catch (NoSuchElementException success) {}
1390	>	try {
1391	>	q.remove();
1392	>	shouldThrow();
1393	>	} catch (NoSuchElementException success) {}
1394	>	} catch (InterruptedException ie) {
1395	>	threadUnexpectedException(ie);
1396	>	}
1397	>	}
1398	>
1399	>	void assertSerialEquals(Object x, Object y) {
1400	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1401	>	}
1402	>
1403	>	void assertNotSerialEquals(Object x, Object y) {
1404	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1405		}
1406
1407	+	byte[] serialBytes(Object o) {
1408	+	try {
1409	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1410	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1411	+	oos.writeObject(o);
1412	+	oos.flush();
1413	+	oos.close();
1414	+	return bos.toByteArray();
1415	+	} catch (Throwable t) {
1416	+	threadUnexpectedException(t);
1417	+	return new byte[0];
1418	+	}
1419	+	}
1420	+
1421	+	@SuppressWarnings("unchecked")
1422	+	<T> T serialClone(T o) {
1423	+	try {
1424	+	ObjectInputStream ois = new ObjectInputStream
1425	+	(new ByteArrayInputStream(serialBytes(o)));
1426	+	T clone = (T) ois.readObject();
1427	+	assertSame(o.getClass(), clone.getClass());
1428	+	return clone;
1429	+	} catch (Throwable t) {
1430	+	threadUnexpectedException(t);
1431	+	return null;
1432	+	}
1433	+	}
1434
1435	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1436	+	Runnable... throwingActions) {
1437	+	for (Runnable throwingAction : throwingActions) {
1438	+	boolean threw = false;
1439	+	try { throwingAction.run(); }
1440	+	catch (Throwable t) {
1441	+	threw = true;
1442	+	if (!expectedExceptionClass.isInstance(t)) {
1443	+	AssertionFailedError afe =
1444	+	new AssertionFailedError
1445	+	("Expected " + expectedExceptionClass.getName() +
1446	+	", got " + t.getClass().getName());
1447	+	afe.initCause(t);
1448	+	threadUnexpectedException(afe);
1449	+	}
1450	+	}
1451	+	if (!threw)
1452	+	shouldThrow(expectedExceptionClass.getName());
1453	+	}
1454	+	}
1455		}

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