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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.9 by dl, Thu Dec 4 20:54:46 2003 UTC vs.
Revision 1.112 by jsr166, Fri Aug 16 07:07:01 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	<	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.security.CodeSource;
30	>	import java.security.Permission;
31	>	import java.security.PermissionCollection;
32	>	import java.security.Permissions;
33	>	import java.security.Policy;
34	>	import java.security.ProtectionDomain;
35	>	import java.security.SecurityPermission;
36
37		/**
38		* Base class for JSR166 Junit TCK tests.  Defines some constants,
39		* utility methods and classes, as well as a simple framework for
40		* helping to make sure that assertions failing in generated threads
41		* cause the associated test that generated them to itself fail (which
42	<	* JUnit doe not otherwise arrange).  The rules for creating such
42	>	* JUnit does not otherwise arrange).  The rules for creating such
43		* tests are:
44		*
45		* <ol>
46		*
47		* <li> All assertions in code running in generated threads must use
48	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
49	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
50	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
48	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
49	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
50	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
51		* particularly recommended) for other code to use these forms too.
52		* Only the most typically used JUnit assertion methods are defined
53		* this way, but enough to live with.</li>
54		*
55	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
56	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
55	>	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
56	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
57		* them. These methods are used to clear and check for thread
58		* assertion failures.</li>
59		*
60	<	* <li>All delays and timeouts must use one of the constants <tt>
61	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
62	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
60	>	* <li>All delays and timeouts must use one of the constants {@code
61	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
62	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
63		* discriminable from zero time, and always allows enough time for the
64		* small amounts of computation (creating a thread, calling a few
65		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
66		* is always discriminable as larger than SHORT and smaller than
67		* MEDIUM.  And so on. These constants are set to conservative values,
68		* but even so, if there is ever any doubt, they can all be increased
69	<	* in one spot to rerun tests on slower platforms</li>
69	>	* in one spot to rerun tests on slower platforms.</li>
70		*
71		* <li> All threads generated must be joined inside each test case
72	<	* method (or <tt>fail</tt> to do so) before returning from the
73	<	* method. The <tt> joinPool</tt> method can be used to do this when
72	>	* method (or {@code fail} to do so) before returning from the
73	>	* method. The {@code joinPool} method can be used to do this when
74		* using Executors.</li>
75		*
76		* </ol>
77		*
78	<	* <p> <b>Other notes</b>
78	>	* <p><b>Other notes</b>
79		* <ul>
80		*
81		* <li> Usually, there is one testcase method per JSR166 method
#	Line 62 | Line 85 | import java.security.*;
85		* "normal" behaviors differ significantly. And sometimes testcases
86		* cover multiple methods when they cannot be tested in
87		* isolation.</li>
88	<	*
88	>	*
89		* <li> The documentation style for testcases is to provide as javadoc
90		* a simple sentence or two describing the property that the testcase
91		* method purports to test. The javadocs do not say anything about how
#	Line 79 | Line 102 | import java.security.*;
102		* any particular package to simplify things for people integrating
103		* them in TCK test suites.</li>
104		*
105	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
105	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
106		* runs all JSR166 unit tests.</li>
107		*
108		* </ul>
109		*/
110		public class JSR166TestCase extends TestCase {
111	+	private static final boolean useSecurityManager =
112	+	Boolean.getBoolean("jsr166.useSecurityManager");
113	+
114	+	protected static final boolean expensiveTests =
115	+	Boolean.getBoolean("jsr166.expensiveTests");
116	+
117	+	/**
118	+	* If true, report on stdout all "slow" tests, that is, ones that
119	+	* take more than profileThreshold milliseconds to execute.
120	+	*/
121	+	private static final boolean profileTests =
122	+	Boolean.getBoolean("jsr166.profileTests");
123	+
124		/**
125	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
126	<	*/
127	<	public static void main (String[] args) {
128	<	junit.textui.TestRunner.run (suite());
125	>	* The number of milliseconds that tests are permitted for
126	>	* execution without being reported, when profileTests is set.
127	>	*/
128	>	private static final long profileThreshold =
129	>	Long.getLong("jsr166.profileThreshold", 100);
130	>
131	>	/**
132	>	* The number of repetitions per test (for tickling rare bugs).
133	>	*/
134	>	private static final int runsPerTest =
135	>	Integer.getInteger("jsr166.runsPerTest", 1);
136	>
137	>	protected void runTest() throws Throwable {
138	>	for (int i = 0; i < runsPerTest; i++) {
139	>	if (profileTests)
140	>	runTestProfiled();
141	>	else
142	>	super.runTest();
143	>	}
144	>	}
145	>
146	>	protected void runTestProfiled() throws Throwable {
147	>	long t0 = System.nanoTime();
148	>	try {
149	>	super.runTest();
150	>	} finally {
151	>	long elapsedMillis =
152	>	(System.nanoTime() - t0) / (1000L * 1000L);
153	>	if (elapsedMillis >= profileThreshold)
154	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
155	>	}
156		}
157
158		/**
159	<	* Collects all JSR166 unit tests as one suite
160	<	*/
161	<	public static Test suite ( ) {
162	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
163	<
164	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
165	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
166	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
167	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
168	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
169	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
170	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
171	<	suite.addTest(new TestSuite(AtomicLongTest.class));
172	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
173	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
174	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
175	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
176	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
177	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
178	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
179	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
180	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
181	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
182	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
183	<	suite.addTest(new TestSuite(DelayQueueTest.class));
184	<	suite.addTest(new TestSuite(ExchangerTest.class));
185	<	suite.addTest(new TestSuite(ExecutorsTest.class));
186	<	suite.addTest(new TestSuite(FutureTaskTest.class));
187	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
188	<	suite.addTest(new TestSuite(LinkedListTest.class));
189	<	suite.addTest(new TestSuite(LockSupportTest.class));
190	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
191	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
192	<	suite.addTest(new TestSuite(PrivilegedFutureTaskTest.class));
193	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
194	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
195	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
196	<	suite.addTest(new TestSuite(SemaphoreTest.class));
197	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
198	<	suite.addTest(new TestSuite(SystemTest.class));
199	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
200	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
201	<	suite.addTest(new TestSuite(ThreadTest.class));
202	<	suite.addTest(new TestSuite(TimeUnitTest.class));
203	<
159	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
160	>	* Optional command line arg provides the number of iterations to
161	>	* repeat running the tests.
162	>	*/
163	>	public static void main(String[] args) {
164	>	if (useSecurityManager) {
165	>	System.err.println("Setting a permissive security manager");
166	>	Policy.setPolicy(permissivePolicy());
167	>	System.setSecurityManager(new SecurityManager());
168	>	}
169	>	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
170	>
171	>	Test s = suite();
172	>	for (int i = 0; i < iters; ++i) {
173	>	junit.textui.TestRunner.run(s);
174	>	System.gc();
175	>	System.runFinalization();
176	>	}
177	>	System.exit(0);
178	>	}
179	>
180	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
181	>	TestSuite suite = new TestSuite();
182	>	for (Object suiteOrClass : suiteOrClasses) {
183	>	if (suiteOrClass instanceof TestSuite)
184	>	suite.addTest((TestSuite) suiteOrClass);
185	>	else if (suiteOrClass instanceof Class)
186	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
187	>	else
188	>	throw new ClassCastException("not a test suite or class");
189	>	}
190	>	return suite;
191	>	}
192	>
193	>	public static void addNamedTestClasses(TestSuite suite,
194	>	String... testClassNames) {
195	>	for (String testClassName : testClassNames) {
196	>	try {
197	>	Class<?> testClass = Class.forName(testClassName);
198	>	Method m = testClass.getDeclaredMethod("suite",
199	>	new Class<?>[0]);
200	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
201	>	} catch (Exception e) {
202	>	throw new Error("Missing test class", e);
203	>	}
204	>	}
205	>	}
206	>
207	>	public static final double JAVA_CLASS_VERSION;
208	>	static {
209	>	try {
210	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
211	>	new java.security.PrivilegedAction<Double>() {
212	>	public Double run() {
213	>	return Double.valueOf(System.getProperty("java.class.version"));}});
214	>	} catch (Throwable t) {
215	>	throw new Error(t);
216	>	}
217	>	}
218	>
219	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
220	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
221	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
222	>
223	>	/**
224	>	* Collects all JSR166 unit tests as one suite.
225	>	*/
226	>	public static Test suite() {
227	>	// Java7+ test classes
228	>	TestSuite suite = newTestSuite(
229	>	ForkJoinPoolTest.suite(),
230	>	ForkJoinTaskTest.suite(),
231	>	RecursiveActionTest.suite(),
232	>	RecursiveTaskTest.suite(),
233	>	LinkedTransferQueueTest.suite(),
234	>	PhaserTest.suite(),
235	>	ThreadLocalRandomTest.suite(),
236	>	AbstractExecutorServiceTest.suite(),
237	>	AbstractQueueTest.suite(),
238	>	AbstractQueuedSynchronizerTest.suite(),
239	>	AbstractQueuedLongSynchronizerTest.suite(),
240	>	ArrayBlockingQueueTest.suite(),
241	>	ArrayDequeTest.suite(),
242	>	AtomicBooleanTest.suite(),
243	>	AtomicIntegerArrayTest.suite(),
244	>	AtomicIntegerFieldUpdaterTest.suite(),
245	>	AtomicIntegerTest.suite(),
246	>	AtomicLongArrayTest.suite(),
247	>	AtomicLongFieldUpdaterTest.suite(),
248	>	AtomicLongTest.suite(),
249	>	AtomicMarkableReferenceTest.suite(),
250	>	AtomicReferenceArrayTest.suite(),
251	>	AtomicReferenceFieldUpdaterTest.suite(),
252	>	AtomicReferenceTest.suite(),
253	>	AtomicStampedReferenceTest.suite(),
254	>	ConcurrentHashMapTest.suite(),
255	>	ConcurrentLinkedDequeTest.suite(),
256	>	ConcurrentLinkedQueueTest.suite(),
257	>	ConcurrentSkipListMapTest.suite(),
258	>	ConcurrentSkipListSubMapTest.suite(),
259	>	ConcurrentSkipListSetTest.suite(),
260	>	ConcurrentSkipListSubSetTest.suite(),
261	>	CopyOnWriteArrayListTest.suite(),
262	>	CopyOnWriteArraySetTest.suite(),
263	>	CountDownLatchTest.suite(),
264	>	CyclicBarrierTest.suite(),
265	>	DelayQueueTest.suite(),
266	>	EntryTest.suite(),
267	>	ExchangerTest.suite(),
268	>	ExecutorsTest.suite(),
269	>	ExecutorCompletionServiceTest.suite(),
270	>	FutureTaskTest.suite(),
271	>	LinkedBlockingDequeTest.suite(),
272	>	LinkedBlockingQueueTest.suite(),
273	>	LinkedListTest.suite(),
274	>	LockSupportTest.suite(),
275	>	PriorityBlockingQueueTest.suite(),
276	>	PriorityQueueTest.suite(),
277	>	ReentrantLockTest.suite(),
278	>	ReentrantReadWriteLockTest.suite(),
279	>	ScheduledExecutorTest.suite(),
280	>	ScheduledExecutorSubclassTest.suite(),
281	>	SemaphoreTest.suite(),
282	>	SynchronousQueueTest.suite(),
283	>	SystemTest.suite(),
284	>	ThreadLocalTest.suite(),
285	>	ThreadPoolExecutorTest.suite(),
286	>	ThreadPoolExecutorSubclassTest.suite(),
287	>	ThreadTest.suite(),
288	>	TimeUnitTest.suite(),
289	>	TreeMapTest.suite(),
290	>	TreeSetTest.suite(),
291	>	TreeSubMapTest.suite(),
292	>	TreeSubSetTest.suite());
293	>
294	>	// Java8+ test classes
295	>	if (atLeastJava8()) {
296	>	String[] java8TestClassNames = {
297	>	"CompletableFutureTest",
298	>	"ConcurrentHashMap8Test",
299	>	"CountedCompleterTest",
300	>	"DoubleAccumulatorTest",
301	>	"DoubleAdderTest",
302	>	"ForkJoinPool8Test",
303	>	"ForkJoinTask8Test",
304	>	"LongAccumulatorTest",
305	>	"LongAdderTest",
306	>	"SplittableRandomTest",
307	>	"StampedLockTest",
308	>	"ThreadLocalRandom8Test",
309	>	};
310	>	addNamedTestClasses(suite, java8TestClassNames);
311	>	}
312	>
313		return suite;
314		}
315
316	+	// Delays for timing-dependent tests, in milliseconds.
317
318		public static long SHORT_DELAY_MS;
319		public static long SMALL_DELAY_MS;
320		public static long MEDIUM_DELAY_MS;
321		public static long LONG_DELAY_MS;
322
150	–
323		/**
324	<	* Return the shortest timed delay. This could
325	<	* be reimplmented to use for example a Property.
326	<	*/
324	>	* Returns the shortest timed delay. This could
325	>	* be reimplemented to use for example a Property.
326	>	*/
327		protected long getShortDelay() {
328	<	return 100;
328	>	return 50;
329		}
330
159	–
331		/**
332	<	* Set delays as multiples of SHORT_DELAY.
332	>	* Sets delays as multiples of SHORT_DELAY.
333		*/
334	<	protected  void setDelays() {
334	>	protected void setDelays() {
335		SHORT_DELAY_MS = getShortDelay();
336	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
336	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
337		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
338	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
338	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
339	>	}
340	>
341	>	/**
342	>	* Returns a timeout in milliseconds to be used in tests that
343	>	* verify that operations block or time out.
344	>	*/
345	>	long timeoutMillis() {
346	>	return SHORT_DELAY_MS / 4;
347	>	}
348	>
349	>	/**
350	>	* Returns a new Date instance representing a time delayMillis
351	>	* milliseconds in the future.
352	>	*/
353	>	Date delayedDate(long delayMillis) {
354	>	return new Date(System.currentTimeMillis() + delayMillis);
355		}
356
357		/**
358	<	* Flag set true if any threadAssert methods fail
358	>	* The first exception encountered if any threadAssertXXX method fails.
359		*/
360	<	volatile boolean threadFailed;
360	>	private final AtomicReference<Throwable> threadFailure
361	>	= new AtomicReference<Throwable>(null);
362
363		/**
364	<	* Initialize test to indicate that no thread assertions have failed
364	>	* Records an exception so that it can be rethrown later in the test
365	>	* harness thread, triggering a test case failure.  Only the first
366	>	* failure is recorded; subsequent calls to this method from within
367	>	* the same test have no effect.
368		*/
369	<	public void setUp() {
369	>	public void threadRecordFailure(Throwable t) {
370	>	threadFailure.compareAndSet(null, t);
371	>	}
372	>
373	>	public void setUp() {
374		setDelays();
180	–	threadFailed = false;
375		}
376
377		/**
378	<	* Trigger test case failure if any thread assertions have failed
378	>	* Extra checks that get done for all test cases.
379	>	*
380	>	* Triggers test case failure if any thread assertions have failed,
381	>	* by rethrowing, in the test harness thread, any exception recorded
382	>	* earlier by threadRecordFailure.
383	>	*
384	>	* Triggers test case failure if interrupt status is set in the main thread.
385	>	*/
386	>	public void tearDown() throws Exception {
387	>	Throwable t = threadFailure.getAndSet(null);
388	>	if (t != null) {
389	>	if (t instanceof Error)
390	>	throw (Error) t;
391	>	else if (t instanceof RuntimeException)
392	>	throw (RuntimeException) t;
393	>	else if (t instanceof Exception)
394	>	throw (Exception) t;
395	>	else {
396	>	AssertionFailedError afe =
397	>	new AssertionFailedError(t.toString());
398	>	afe.initCause(t);
399	>	throw afe;
400	>	}
401	>	}
402	>
403	>	if (Thread.interrupted())
404	>	throw new AssertionFailedError("interrupt status set in main thread");
405	>
406	>	checkForkJoinPoolThreadLeaks();
407	>	}
408	>
409	>	/**
410	>	* Find missing try { ... } finally { joinPool(e); }
411		*/
412	<	public void tearDown() {
413	<	assertFalse(threadFailed);
412	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
413	>	Thread[] survivors = new Thread[5];
414	>	int count = Thread.enumerate(survivors);
415	>	for (int i = 0; i < count; i++) {
416	>	Thread thread = survivors[i];
417	>	String name = thread.getName();
418	>	if (name.startsWith("ForkJoinPool-")) {
419	>	// give thread some time to terminate
420	>	thread.join(LONG_DELAY_MS);
421	>	if (!thread.isAlive()) continue;
422	>	thread.stop();
423	>	throw new AssertionFailedError
424	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
425	>	toString(), name));
426	>	}
427	>	}
428		}
429
430		/**
431	<	* Fail, also setting status to indicate current testcase should fail
432	<	*/
431	>	* Just like fail(reason), but additionally recording (using
432	>	* threadRecordFailure) any AssertionFailedError thrown, so that
433	>	* the current testcase will fail.
434	>	*/
435		public void threadFail(String reason) {
436	<	threadFailed = true;
437	<	fail(reason);
436	>	try {
437	>	fail(reason);
438	>	} catch (AssertionFailedError t) {
439	>	threadRecordFailure(t);
440	>	fail(reason);
441	>	}
442		}
443
444		/**
445	<	* If expression not true, set status to indicate current testcase
446	<	* should fail
447	<	*/
445	>	* Just like assertTrue(b), but additionally recording (using
446	>	* threadRecordFailure) any AssertionFailedError thrown, so that
447	>	* the current testcase will fail.
448	>	*/
449		public void threadAssertTrue(boolean b) {
450	<	if (!b) {
204	<	threadFailed = true;
450	>	try {
451		assertTrue(b);
452	+	} catch (AssertionFailedError t) {
453	+	threadRecordFailure(t);
454	+	throw t;
455		}
456		}
457
458		/**
459	<	* If expression not false, set status to indicate current testcase
460	<	* should fail
461	<	*/
459	>	* Just like assertFalse(b), but additionally recording (using
460	>	* threadRecordFailure) any AssertionFailedError thrown, so that
461	>	* the current testcase will fail.
462	>	*/
463		public void threadAssertFalse(boolean b) {
464	<	if (b) {
215	<	threadFailed = true;
464	>	try {
465		assertFalse(b);
466	+	} catch (AssertionFailedError t) {
467	+	threadRecordFailure(t);
468	+	throw t;
469		}
470		}
471
472		/**
473	<	* If argument not null, set status to indicate current testcase
474	<	* should fail
475	<	*/
473	>	* Just like assertNull(x), but additionally recording (using
474	>	* threadRecordFailure) any AssertionFailedError thrown, so that
475	>	* the current testcase will fail.
476	>	*/
477		public void threadAssertNull(Object x) {
478	<	if (x != null) {
226	<	threadFailed = true;
478	>	try {
479		assertNull(x);
480	+	} catch (AssertionFailedError t) {
481	+	threadRecordFailure(t);
482	+	throw t;
483		}
484		}
485
486		/**
487	<	* If arguments not equal, set status to indicate current testcase
488	<	* should fail
489	<	*/
487	>	* Just like assertEquals(x, y), but additionally recording (using
488	>	* threadRecordFailure) any AssertionFailedError thrown, so that
489	>	* the current testcase will fail.
490	>	*/
491		public void threadAssertEquals(long x, long y) {
492	<	if (x != y) {
237	<	threadFailed = true;
492	>	try {
493		assertEquals(x, y);
494	+	} catch (AssertionFailedError t) {
495	+	threadRecordFailure(t);
496	+	throw t;
497		}
498		}
499
500		/**
501	<	* If arguments not equal, set status to indicate current testcase
502	<	* should fail
503	<	*/
501	>	* Just like assertEquals(x, y), but additionally recording (using
502	>	* threadRecordFailure) any AssertionFailedError thrown, so that
503	>	* the current testcase will fail.
504	>	*/
505		public void threadAssertEquals(Object x, Object y) {
506	<	if (x != y && (x == null || !x.equals(y))) {
248	<	threadFailed = true;
506	>	try {
507		assertEquals(x, y);
508	+	} catch (AssertionFailedError t) {
509	+	threadRecordFailure(t);
510	+	throw t;
511	+	} catch (Throwable t) {
512	+	threadUnexpectedException(t);
513		}
514		}
515
516		/**
517	<	* threadFail with message "should throw exception"
518	<	*/
517	>	* Just like assertSame(x, y), but additionally recording (using
518	>	* threadRecordFailure) any AssertionFailedError thrown, so that
519	>	* the current testcase will fail.
520	>	*/
521	>	public void threadAssertSame(Object x, Object y) {
522	>	try {
523	>	assertSame(x, y);
524	>	} catch (AssertionFailedError t) {
525	>	threadRecordFailure(t);
526	>	throw t;
527	>	}
528	>	}
529	>
530	>	/**
531	>	* Calls threadFail with message "should throw exception".
532	>	*/
533		public void threadShouldThrow() {
534	<	threadFailed = true;
535	<	fail("should throw exception");
534	>	threadFail("should throw exception");
535	>	}
536	>
537	>	/**
538	>	* Calls threadFail with message "should throw" + exceptionName.
539	>	*/
540	>	public void threadShouldThrow(String exceptionName) {
541	>	threadFail("should throw " + exceptionName);
542		}
543
544		/**
545	<	* threadFail with message "Unexpected exception"
545	>	* Records the given exception using {@link #threadRecordFailure},
546	>	* then rethrows the exception, wrapping it in an
547	>	* AssertionFailedError if necessary.
548		*/
549	<	public void threadUnexpectedException() {
550	<	threadFailed = true;
551	<	fail("Unexpected exception");
549	>	public void threadUnexpectedException(Throwable t) {
550	>	threadRecordFailure(t);
551	>	t.printStackTrace();
552	>	if (t instanceof RuntimeException)
553	>	throw (RuntimeException) t;
554	>	else if (t instanceof Error)
555	>	throw (Error) t;
556	>	else {
557	>	AssertionFailedError afe =
558	>	new AssertionFailedError("unexpected exception: " + t);
559	>	afe.initCause(t);
560	>	throw afe;
561	>	}
562		}
563
564	+	/**
565	+	* Delays, via Thread.sleep, for the given millisecond delay, but
566	+	* if the sleep is shorter than specified, may re-sleep or yield
567	+	* until time elapses.
568	+	*/
569	+	static void delay(long millis) throws InterruptedException {
570	+	long startTime = System.nanoTime();
571	+	long ns = millis * 1000 * 1000;
572	+	for (;;) {
573	+	if (millis > 0L)
574	+	Thread.sleep(millis);
575	+	else // too short to sleep
576	+	Thread.yield();
577	+	long d = ns - (System.nanoTime() - startTime);
578	+	if (d > 0L)
579	+	millis = d / (1000 * 1000);
580	+	else
581	+	break;
582	+	}
583	+	}
584
585		/**
586	<	* Wait out termination of a thread pool or fail doing so
586	>	* Waits out termination of a thread pool or fails doing so.
587		*/
588	<	public void joinPool(ExecutorService exec) {
588	>	void joinPool(ExecutorService exec) {
589		try {
590		exec.shutdown();
591	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
592	<	} catch(InterruptedException ie) {
593	<	fail("Unexpected exception");
591	>	assertTrue("ExecutorService did not terminate in a timely manner",
592	>	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
593	>	} catch (SecurityException ok) {
594	>	// Allowed in case test doesn't have privs
595	>	} catch (InterruptedException ie) {
596	>	fail("Unexpected InterruptedException");
597	>	}
598	>	}
599	>
600	>	/**
601	>	* A debugging tool to print all stack traces, as jstack does.
602	>	*/
603	>	static void printAllStackTraces() {
604	>	for (ThreadInfo info :
605	>	ManagementFactory.getThreadMXBean()
606	>	.dumpAllThreads(true, true))
607	>	System.err.print(info);
608	>	}
609	>
610	>	/**
611	>	* Checks that thread does not terminate within the default
612	>	* millisecond delay of {@code timeoutMillis()}.
613	>	*/
614	>	void assertThreadStaysAlive(Thread thread) {
615	>	assertThreadStaysAlive(thread, timeoutMillis());
616	>	}
617	>
618	>	/**
619	>	* Checks that thread does not terminate within the given millisecond delay.
620	>	*/
621	>	void assertThreadStaysAlive(Thread thread, long millis) {
622	>	try {
623	>	// No need to optimize the failing case via Thread.join.
624	>	delay(millis);
625	>	assertTrue(thread.isAlive());
626	>	} catch (InterruptedException ie) {
627	>	fail("Unexpected InterruptedException");
628	>	}
629	>	}
630	>
631	>	/**
632	>	* Checks that the threads do not terminate within the default
633	>	* millisecond delay of {@code timeoutMillis()}.
634	>	*/
635	>	void assertThreadsStayAlive(Thread... threads) {
636	>	assertThreadsStayAlive(timeoutMillis(), threads);
637	>	}
638	>
639	>	/**
640	>	* Checks that the threads do not terminate within the given millisecond delay.
641	>	*/
642	>	void assertThreadsStayAlive(long millis, Thread... threads) {
643	>	try {
644	>	// No need to optimize the failing case via Thread.join.
645	>	delay(millis);
646	>	for (Thread thread : threads)
647	>	assertTrue(thread.isAlive());
648	>	} catch (InterruptedException ie) {
649	>	fail("Unexpected InterruptedException");
650		}
651		}
652
653	+	/**
654	+	* Checks that future.get times out, with the default timeout of
655	+	* {@code timeoutMillis()}.
656	+	*/
657	+	void assertFutureTimesOut(Future future) {
658	+	assertFutureTimesOut(future, timeoutMillis());
659	+	}
660	+
661	+	/**
662	+	* Checks that future.get times out, with the given millisecond timeout.
663	+	*/
664	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
665	+	long startTime = System.nanoTime();
666	+	try {
667	+	future.get(timeoutMillis, MILLISECONDS);
668	+	shouldThrow();
669	+	} catch (TimeoutException success) {
670	+	} catch (Exception e) {
671	+	threadUnexpectedException(e);
672	+	} finally { future.cancel(true); }
673	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
674	+	}
675
676		/**
677	<	* fail with message "should throw exception"
678	<	*/
677	>	* Fails with message "should throw exception".
678	>	*/
679		public void shouldThrow() {
680		fail("Should throw exception");
681		}
682
683		/**
684	<	* fail with message "Unexpected exception"
684	>	* Fails with message "should throw " + exceptionName.
685		*/
686	<	public void unexpectedException() {
687	<	fail("Unexpected exception");
686	>	public void shouldThrow(String exceptionName) {
687	>	fail("Should throw " + exceptionName);
688		}
689
297	–
690		/**
691		* The number of elements to place in collections, arrays, etc.
692		*/
693	<	static final int SIZE = 20;
693	>	public static final int SIZE = 20;
694
695		// Some convenient Integer constants
696
697	<	static final Integer zero = new Integer(0);
698	<	static final Integer one = new Integer(1);
699	<	static final Integer two = new Integer(2);
700	<	static final Integer three  = new Integer(3);
701	<	static final Integer four  = new Integer(4);
702	<	static final Integer five  = new Integer(5);
703	<	static final Integer six = new Integer(6);
704	<	static final Integer seven = new Integer(7);
705	<	static final Integer eight = new Integer(8);
706	<	static final Integer nine = new Integer(9);
707	<	static final Integer m1  = new Integer(-1);
708	<	static final Integer m2  = new Integer(-2);
709	<	static final Integer m3  = new Integer(-3);
710	<	static final Integer m4 = new Integer(-4);
711	<	static final Integer m5 = new Integer(-5);
712	<	static final Integer m10 = new Integer(-10);
697	>	public static final Integer zero  = new Integer(0);
698	>	public static final Integer one   = new Integer(1);
699	>	public static final Integer two   = new Integer(2);
700	>	public static final Integer three = new Integer(3);
701	>	public static final Integer four  = new Integer(4);
702	>	public static final Integer five  = new Integer(5);
703	>	public static final Integer six   = new Integer(6);
704	>	public static final Integer seven = new Integer(7);
705	>	public static final Integer eight = new Integer(8);
706	>	public static final Integer nine  = new Integer(9);
707	>	public static final Integer m1  = new Integer(-1);
708	>	public static final Integer m2  = new Integer(-2);
709	>	public static final Integer m3  = new Integer(-3);
710	>	public static final Integer m4  = new Integer(-4);
711	>	public static final Integer m5  = new Integer(-5);
712	>	public static final Integer m6  = new Integer(-6);
713	>	public static final Integer m10 = new Integer(-10);
714	>
715	>	/**
716	>	* Runs Runnable r with a security policy that permits precisely
717	>	* the specified permissions.  If there is no current security
718	>	* manager, the runnable is run twice, both with and without a
719	>	* security manager.  We require that any security manager permit
720	>	* getPolicy/setPolicy.
721	>	*/
722	>	public void runWithPermissions(Runnable r, Permission... permissions) {
723	>	SecurityManager sm = System.getSecurityManager();
724	>	if (sm == null) {
725	>	r.run();
726	>	}
727	>	runWithSecurityManagerWithPermissions(r, permissions);
728	>	}
729	>
730	>	/**
731	>	* Runs Runnable r with a security policy that permits precisely
732	>	* the specified permissions.  If there is no current security
733	>	* manager, a temporary one is set for the duration of the
734	>	* Runnable.  We require that any security manager permit
735	>	* getPolicy/setPolicy.
736	>	*/
737	>	public void runWithSecurityManagerWithPermissions(Runnable r,
738	>	Permission... permissions) {
739	>	SecurityManager sm = System.getSecurityManager();
740	>	if (sm == null) {
741	>	Policy savedPolicy = Policy.getPolicy();
742	>	try {
743	>	Policy.setPolicy(permissivePolicy());
744	>	System.setSecurityManager(new SecurityManager());
745	>	runWithSecurityManagerWithPermissions(r, permissions);
746	>	} finally {
747	>	System.setSecurityManager(null);
748	>	Policy.setPolicy(savedPolicy);
749	>	}
750	>	} else {
751	>	Policy savedPolicy = Policy.getPolicy();
752	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
753	>	Policy.setPolicy(policy);
754	>
755	>	try {
756	>	r.run();
757	>	} finally {
758	>	policy.addPermission(new SecurityPermission("setPolicy"));
759	>	Policy.setPolicy(savedPolicy);
760	>	}
761	>	}
762	>	}
763
764	+	/**
765	+	* Runs a runnable without any permissions.
766	+	*/
767	+	public void runWithoutPermissions(Runnable r) {
768	+	runWithPermissions(r);
769	+	}
770
771		/**
772		* A security policy where new permissions can be dynamically added
773		* or all cleared.
774		*/
775	<	static class AdjustablePolicy extends java.security.Policy {
775	>	public static class AdjustablePolicy extends java.security.Policy {
776		Permissions perms = new Permissions();
777	<	AdjustablePolicy() { }
777	>	AdjustablePolicy(Permission... permissions) {
778	>	for (Permission permission : permissions)
779	>	perms.add(permission);
780	>	}
781		void addPermission(Permission perm) { perms.add(perm); }
782		void clearPermissions() { perms = new Permissions(); }
783	<	public PermissionCollection getPermissions(CodeSource cs) {
784	<	return perms;
785	<	}
786	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
787	<	return perms;
788	<	}
789	<	public boolean implies(ProtectionDomain pd, Permission p) {
790	<	return perms.implies(p);
791	<	}
792	<	public void refresh() {}
783	>	public PermissionCollection getPermissions(CodeSource cs) {
784	>	return perms;
785	>	}
786	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
787	>	return perms;
788	>	}
789	>	public boolean implies(ProtectionDomain pd, Permission p) {
790	>	return perms.implies(p);
791	>	}
792	>	public void refresh() {}
793	>	public String toString() {
794	>	List<Permission> ps = new ArrayList<Permission>();
795	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
796	>	ps.add(e.nextElement());
797	>	return "AdjustablePolicy with permissions " + ps;
798	>	}
799		}
800
801	+	/**
802	+	* Returns a policy containing all the permissions we ever need.
803	+	*/
804	+	public static Policy permissivePolicy() {
805	+	return new AdjustablePolicy
806	+	// Permissions j.u.c. needs directly
807	+	(new RuntimePermission("modifyThread"),
808	+	new RuntimePermission("getClassLoader"),
809	+	new RuntimePermission("setContextClassLoader"),
810	+	// Permissions needed to change permissions!
811	+	new SecurityPermission("getPolicy"),
812	+	new SecurityPermission("setPolicy"),
813	+	new RuntimePermission("setSecurityManager"),
814	+	// Permissions needed by the junit test harness
815	+	new RuntimePermission("accessDeclaredMembers"),
816	+	new PropertyPermission("*", "read"),
817	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
818	+	}
819
820	<	// Some convenient Runnable classes
820	>	/**
821	>	* Sleeps until the given time has elapsed.
822	>	* Throws AssertionFailedError if interrupted.
823	>	*/
824	>	void sleep(long millis) {
825	>	try {
826	>	delay(millis);
827	>	} catch (InterruptedException ie) {
828	>	AssertionFailedError afe =
829	>	new AssertionFailedError("Unexpected InterruptedException");
830	>	afe.initCause(ie);
831	>	throw afe;
832	>	}
833	>	}
834
835	<	static class NoOpRunnable implements Runnable {
836	<	public void run() {}
835	>	/**
836	>	* Spin-waits up to the specified number of milliseconds for the given
837	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
838	>	*/
839	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
840	>	long startTime = System.nanoTime();
841	>	for (;;) {
842	>	Thread.State s = thread.getState();
843	>	if (s == Thread.State.BLOCKED ||
844	>	s == Thread.State.WAITING ||
845	>	s == Thread.State.TIMED_WAITING)
846	>	return;
847	>	else if (s == Thread.State.TERMINATED)
848	>	fail("Unexpected thread termination");
849	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
850	>	threadAssertTrue(thread.isAlive());
851	>	return;
852	>	}
853	>	Thread.yield();
854	>	}
855		}
856
857	<	static class NoOpCallable implements Callable {
858	<	public Object call() { return Boolean.TRUE; }
857	>	/**
858	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
859	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
860	>	*/
861	>	void waitForThreadToEnterWaitState(Thread thread) {
862	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
863		}
864
865	<	class ShortRunnable implements Runnable {
866	<	public void run() {
867	<	try {
868	<	Thread.sleep(SHORT_DELAY_MS);
869	<	}
870	<	catch(Exception e) {
871	<	threadUnexpectedException();
865	>	/**
866	>	* Returns the number of milliseconds since time given by
867	>	* startNanoTime, which must have been previously returned from a
868	>	* call to {@link System.nanoTime()}.
869	>	*/
870	>	long millisElapsedSince(long startNanoTime) {
871	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
872	>	}
873	>
874	>	/**
875	>	* Returns a new started daemon Thread running the given runnable.
876	>	*/
877	>	Thread newStartedThread(Runnable runnable) {
878	>	Thread t = new Thread(runnable);
879	>	t.setDaemon(true);
880	>	t.start();
881	>	return t;
882	>	}
883	>
884	>	/**
885	>	* Waits for the specified time (in milliseconds) for the thread
886	>	* to terminate (using {@link Thread#join(long)}), else interrupts
887	>	* the thread (in the hope that it may terminate later) and fails.
888	>	*/
889	>	void awaitTermination(Thread t, long timeoutMillis) {
890	>	try {
891	>	t.join(timeoutMillis);
892	>	} catch (InterruptedException ie) {
893	>	threadUnexpectedException(ie);
894	>	} finally {
895	>	if (t.getState() != Thread.State.TERMINATED) {
896	>	t.interrupt();
897	>	fail("Test timed out");
898		}
899		}
900		}
901
902	<	class ShortInterruptedRunnable implements Runnable {
903	<	public void run() {
902	>	/**
903	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
904	>	* terminate (using {@link Thread#join(long)}), else interrupts
905	>	* the thread (in the hope that it may terminate later) and fails.
906	>	*/
907	>	void awaitTermination(Thread t) {
908	>	awaitTermination(t, LONG_DELAY_MS);
909	>	}
910	>
911	>	// Some convenient Runnable classes
912	>
913	>	public abstract class CheckedRunnable implements Runnable {
914	>	protected abstract void realRun() throws Throwable;
915	>
916	>	public final void run() {
917		try {
918	<	Thread.sleep(SHORT_DELAY_MS);
919	<	threadShouldThrow();
920	<	}
372	<	catch(InterruptedException success) {
918	>	realRun();
919	>	} catch (Throwable t) {
920	>	threadUnexpectedException(t);
921		}
922		}
923		}
924
925	<	class SmallRunnable implements Runnable {
926	<	public void run() {
925	>	public abstract class RunnableShouldThrow implements Runnable {
926	>	protected abstract void realRun() throws Throwable;
927	>
928	>	final Class<?> exceptionClass;
929	>
930	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
931	>	this.exceptionClass = exceptionClass;
932	>	}
933	>
934	>	public final void run() {
935		try {
936	<	Thread.sleep(SMALL_DELAY_MS);
937	<	}
938	<	catch(Exception e) {
939	<	threadUnexpectedException();
936	>	realRun();
937	>	threadShouldThrow(exceptionClass.getSimpleName());
938	>	} catch (Throwable t) {
939	>	if (! exceptionClass.isInstance(t))
940	>	threadUnexpectedException(t);
941		}
942		}
943		}
944
945	<	class SmallPossiblyInterruptedRunnable implements Runnable {
946	<	public void run() {
945	>	public abstract class ThreadShouldThrow extends Thread {
946	>	protected abstract void realRun() throws Throwable;
947	>
948	>	final Class<?> exceptionClass;
949	>
950	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
951	>	this.exceptionClass = exceptionClass;
952	>	}
953	>
954	>	public final void run() {
955		try {
956	<	Thread.sleep(SMALL_DELAY_MS);
957	<	}
958	<	catch(Exception e) {
956	>	realRun();
957	>	threadShouldThrow(exceptionClass.getSimpleName());
958	>	} catch (Throwable t) {
959	>	if (! exceptionClass.isInstance(t))
960	>	threadUnexpectedException(t);
961		}
962		}
963		}
964
965	<	class SmallCallable implements Callable {
966	<	public Object call() {
965	>	public abstract class CheckedInterruptedRunnable implements Runnable {
966	>	protected abstract void realRun() throws Throwable;
967	>
968	>	public final void run() {
969		try {
970	<	Thread.sleep(SMALL_DELAY_MS);
971	<	}
972	<	catch(Exception e) {
973	<	threadUnexpectedException();
970	>	realRun();
971	>	threadShouldThrow("InterruptedException");
972	>	} catch (InterruptedException success) {
973	>	threadAssertFalse(Thread.interrupted());
974	>	} catch (Throwable t) {
975	>	threadUnexpectedException(t);
976		}
406	–	return Boolean.TRUE;
977		}
978		}
979
980	<	class SmallInterruptedRunnable implements Runnable {
981	<	public void run() {
980	>	public abstract class CheckedCallable<T> implements Callable<T> {
981	>	protected abstract T realCall() throws Throwable;
982	>
983	>	public final T call() {
984		try {
985	<	Thread.sleep(SMALL_DELAY_MS);
986	<	threadShouldThrow();
987	<	}
988	<	catch(InterruptedException success) {
985	>	return realCall();
986	>	} catch (Throwable t) {
987	>	threadUnexpectedException(t);
988	>	return null;
989		}
990		}
991		}
992
993	+	public abstract class CheckedInterruptedCallable<T>
994	+	implements Callable<T> {
995	+	protected abstract T realCall() throws Throwable;
996
997	<	class MediumRunnable implements Runnable {
423	<	public void run() {
997	>	public final T call() {
998		try {
999	<	Thread.sleep(MEDIUM_DELAY_MS);
1000	<	}
1001	<	catch(Exception e) {
1002	<	threadUnexpectedException();
999	>	T result = realCall();
1000	>	threadShouldThrow("InterruptedException");
1001	>	return result;
1002	>	} catch (InterruptedException success) {
1003	>	threadAssertFalse(Thread.interrupted());
1004	>	} catch (Throwable t) {
1005	>	threadUnexpectedException(t);
1006		}
1007	+	return null;
1008		}
1009		}
1010
1011	<	class MediumInterruptedRunnable implements Runnable {
1012	<	public void run() {
1011	>	public static class NoOpRunnable implements Runnable {
1012	>	public void run() {}
1013	>	}
1014	>
1015	>	public static class NoOpCallable implements Callable {
1016	>	public Object call() { return Boolean.TRUE; }
1017	>	}
1018	>
1019	>	public static final String TEST_STRING = "a test string";
1020	>
1021	>	public static class StringTask implements Callable<String> {
1022	>	public String call() { return TEST_STRING; }
1023	>	}
1024	>
1025	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1026	>	return new CheckedCallable<String>() {
1027	>	protected String realCall() {
1028	>	try {
1029	>	latch.await();
1030	>	} catch (InterruptedException quittingTime) {}
1031	>	return TEST_STRING;
1032	>	}};
1033	>	}
1034	>
1035	>	public Runnable awaiter(final CountDownLatch latch) {
1036	>	return new CheckedRunnable() {
1037	>	public void realRun() throws InterruptedException {
1038	>	await(latch);
1039	>	}};
1040	>	}
1041	>
1042	>	public void await(CountDownLatch latch) {
1043	>	try {
1044	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1045	>	} catch (Throwable t) {
1046	>	threadUnexpectedException(t);
1047	>	}
1048	>	}
1049	>
1050	>	public void await(Semaphore semaphore) {
1051	>	try {
1052	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1053	>	} catch (Throwable t) {
1054	>	threadUnexpectedException(t);
1055	>	}
1056	>	}
1057	>
1058	>	//     /**
1059	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1060	>	//      */
1061	>	//     public void await(AtomicBoolean flag) {
1062	>	//         await(flag, LONG_DELAY_MS);
1063	>	//     }
1064	>
1065	>	//     /**
1066	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1067	>	//      */
1068	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1069	>	//         long startTime = System.nanoTime();
1070	>	//         while (!flag.get()) {
1071	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1072	>	//                 throw new AssertionFailedError("timed out");
1073	>	//             Thread.yield();
1074	>	//         }
1075	>	//     }
1076	>
1077	>	public static class NPETask implements Callable<String> {
1078	>	public String call() { throw new NullPointerException(); }
1079	>	}
1080	>
1081	>	public static class CallableOne implements Callable<Integer> {
1082	>	public Integer call() { return one; }
1083	>	}
1084	>
1085	>	public class ShortRunnable extends CheckedRunnable {
1086	>	protected void realRun() throws Throwable {
1087	>	delay(SHORT_DELAY_MS);
1088	>	}
1089	>	}
1090	>
1091	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1092	>	protected void realRun() throws InterruptedException {
1093	>	delay(SHORT_DELAY_MS);
1094	>	}
1095	>	}
1096	>
1097	>	public class SmallRunnable extends CheckedRunnable {
1098	>	protected void realRun() throws Throwable {
1099	>	delay(SMALL_DELAY_MS);
1100	>	}
1101	>	}
1102	>
1103	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1104	>	protected void realRun() {
1105		try {
1106	<	Thread.sleep(MEDIUM_DELAY_MS);
1107	<	threadShouldThrow();
438	<	}
439	<	catch(InterruptedException success) {
440	<	}
1106	>	delay(SMALL_DELAY_MS);
1107	>	} catch (InterruptedException ok) {}
1108		}
1109		}
1110
1111	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1112	<	public void run() {
1111	>	public class SmallCallable extends CheckedCallable {
1112	>	protected Object realCall() throws InterruptedException {
1113	>	delay(SMALL_DELAY_MS);
1114	>	return Boolean.TRUE;
1115	>	}
1116	>	}
1117	>
1118	>	public class MediumRunnable extends CheckedRunnable {
1119	>	protected void realRun() throws Throwable {
1120	>	delay(MEDIUM_DELAY_MS);
1121	>	}
1122	>	}
1123	>
1124	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1125	>	protected void realRun() throws InterruptedException {
1126	>	delay(MEDIUM_DELAY_MS);
1127	>	}
1128	>	}
1129	>
1130	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1131	>	return new CheckedRunnable() {
1132	>	protected void realRun() {
1133	>	try {
1134	>	delay(timeoutMillis);
1135	>	} catch (InterruptedException ok) {}
1136	>	}};
1137	>	}
1138	>
1139	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1140	>	protected void realRun() {
1141		try {
1142	<	Thread.sleep(MEDIUM_DELAY_MS);
1143	<	}
1144	<	catch(InterruptedException success) {
1145	<	}
1142	>	delay(MEDIUM_DELAY_MS);
1143	>	} catch (InterruptedException ok) {}
1144	>	}
1145	>	}
1146	>
1147	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1148	>	protected void realRun() {
1149	>	try {
1150	>	delay(LONG_DELAY_MS);
1151	>	} catch (InterruptedException ok) {}
1152		}
1153		}
1154
1155		/**
1156		* For use as ThreadFactory in constructors
1157		*/
1158	<	static class SimpleThreadFactory implements ThreadFactory{
1159	<	public Thread newThread(Runnable r){
1158	>	public static class SimpleThreadFactory implements ThreadFactory {
1159	>	public Thread newThread(Runnable r) {
1160		return new Thread(r);
1161	<	}
1161	>	}
1162	>	}
1163	>
1164	>	public interface TrackedRunnable extends Runnable {
1165	>	boolean isDone();
1166	>	}
1167	>
1168	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1169	>	return new TrackedRunnable() {
1170	>	private volatile boolean done = false;
1171	>	public boolean isDone() { return done; }
1172	>	public void run() {
1173	>	try {
1174	>	delay(timeoutMillis);
1175	>	done = true;
1176	>	} catch (InterruptedException ok) {}
1177	>	}
1178	>	};
1179		}
1180
1181	<	static class TrackedShortRunnable implements Runnable {
1182	<	volatile boolean done = false;
1181	>	public static class TrackedShortRunnable implements Runnable {
1182	>	public volatile boolean done = false;
1183		public void run() {
1184		try {
1185	<	Thread.sleep(SMALL_DELAY_MS);
1185	>	delay(SHORT_DELAY_MS);
1186		done = true;
1187	<	} catch(Exception e){
470	<	}
1187	>	} catch (InterruptedException ok) {}
1188		}
1189		}
1190
1191	<	static class TrackedMediumRunnable implements Runnable {
1192	<	volatile boolean done = false;
1191	>	public static class TrackedSmallRunnable implements Runnable {
1192	>	public volatile boolean done = false;
1193		public void run() {
1194		try {
1195	<	Thread.sleep(MEDIUM_DELAY_MS);
1195	>	delay(SMALL_DELAY_MS);
1196		done = true;
1197	<	} catch(Exception e){
481	<	}
1197	>	} catch (InterruptedException ok) {}
1198		}
1199		}
1200
1201	<	static class TrackedLongRunnable implements Runnable {
1202	<	volatile boolean done = false;
1201	>	public static class TrackedMediumRunnable implements Runnable {
1202	>	public volatile boolean done = false;
1203		public void run() {
1204		try {
1205	<	Thread.sleep(LONG_DELAY_MS);
1205	>	delay(MEDIUM_DELAY_MS);
1206		done = true;
1207	<	} catch(Exception e){
1208	<	}
1207	>	} catch (InterruptedException ok) {}
1208	>	}
1209	>	}
1210	>
1211	>	public static class TrackedLongRunnable implements Runnable {
1212	>	public volatile boolean done = false;
1213	>	public void run() {
1214	>	try {
1215	>	delay(LONG_DELAY_MS);
1216	>	done = true;
1217	>	} catch (InterruptedException ok) {}
1218		}
1219		}
1220
1221	<	static class TrackedNoOpRunnable implements Runnable {
1222	<	volatile boolean done = false;
1221	>	public static class TrackedNoOpRunnable implements Runnable {
1222	>	public volatile boolean done = false;
1223		public void run() {
1224		done = true;
1225		}
1226		}
1227
1228	<	static class TrackedCallable implements Callable {
1229	<	volatile boolean done = false;
1228	>	public static class TrackedCallable implements Callable {
1229	>	public volatile boolean done = false;
1230		public Object call() {
1231		try {
1232	<	Thread.sleep(SMALL_DELAY_MS);
1232	>	delay(SMALL_DELAY_MS);
1233		done = true;
1234	<	} catch(Exception e){
510	<	}
1234	>	} catch (InterruptedException ok) {}
1235		return Boolean.TRUE;
1236		}
1237		}
1238
1239		/**
1240	+	* Analog of CheckedRunnable for RecursiveAction
1241	+	*/
1242	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1243	+	protected abstract void realCompute() throws Throwable;
1244	+
1245	+	@Override protected final void compute() {
1246	+	try {
1247	+	realCompute();
1248	+	} catch (Throwable t) {
1249	+	threadUnexpectedException(t);
1250	+	}
1251	+	}
1252	+	}
1253	+
1254	+	/**
1255	+	* Analog of CheckedCallable for RecursiveTask
1256	+	*/
1257	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1258	+	protected abstract T realCompute() throws Throwable;
1259	+
1260	+	@Override protected final T compute() {
1261	+	try {
1262	+	return realCompute();
1263	+	} catch (Throwable t) {
1264	+	threadUnexpectedException(t);
1265	+	return null;
1266	+	}
1267	+	}
1268	+	}
1269	+
1270	+	/**
1271		* For use as RejectedExecutionHandler in constructors
1272		*/
1273	<	static class NoOpREHandler implements RejectedExecutionHandler{
1274	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1273	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1274	>	public void rejectedExecution(Runnable r,
1275	>	ThreadPoolExecutor executor) {}
1276	>	}
1277	>
1278	>	/**
1279	>	* A CyclicBarrier that uses timed await and fails with
1280	>	* AssertionFailedErrors instead of throwing checked exceptions.
1281	>	*/
1282	>	public class CheckedBarrier extends CyclicBarrier {
1283	>	public CheckedBarrier(int parties) { super(parties); }
1284	>
1285	>	public int await() {
1286	>	try {
1287	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1288	>	} catch (TimeoutException e) {
1289	>	throw new AssertionFailedError("timed out");
1290	>	} catch (Exception e) {
1291	>	AssertionFailedError afe =
1292	>	new AssertionFailedError("Unexpected exception: " + e);
1293	>	afe.initCause(e);
1294	>	throw afe;
1295	>	}
1296	>	}
1297	>	}
1298	>
1299	>	void checkEmpty(BlockingQueue q) {
1300	>	try {
1301	>	assertTrue(q.isEmpty());
1302	>	assertEquals(0, q.size());
1303	>	assertNull(q.peek());
1304	>	assertNull(q.poll());
1305	>	assertNull(q.poll(0, MILLISECONDS));
1306	>	assertEquals(q.toString(), "[]");
1307	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1308	>	assertFalse(q.iterator().hasNext());
1309	>	try {
1310	>	q.element();
1311	>	shouldThrow();
1312	>	} catch (NoSuchElementException success) {}
1313	>	try {
1314	>	q.iterator().next();
1315	>	shouldThrow();
1316	>	} catch (NoSuchElementException success) {}
1317	>	try {
1318	>	q.remove();
1319	>	shouldThrow();
1320	>	} catch (NoSuchElementException success) {}
1321	>	} catch (InterruptedException ie) {
1322	>	threadUnexpectedException(ie);
1323	>	}
1324	>	}
1325	>
1326	>	void assertSerialEquals(Object x, Object y) {
1327	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1328	>	}
1329	>
1330	>	void assertNotSerialEquals(Object x, Object y) {
1331	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1332	>	}
1333	>
1334	>	byte[] serialBytes(Object o) {
1335	>	try {
1336	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1337	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1338	>	oos.writeObject(o);
1339	>	oos.flush();
1340	>	oos.close();
1341	>	return bos.toByteArray();
1342	>	} catch (Throwable t) {
1343	>	threadUnexpectedException(t);
1344	>	return new byte[0];
1345	>	}
1346	>	}
1347	>
1348	>	@SuppressWarnings("unchecked")
1349	>	<T> T serialClone(T o) {
1350	>	try {
1351	>	ObjectInputStream ois = new ObjectInputStream
1352	>	(new ByteArrayInputStream(serialBytes(o)));
1353	>	T clone = (T) ois.readObject();
1354	>	assertSame(o.getClass(), clone.getClass());
1355	>	return clone;
1356	>	} catch (Throwable t) {
1357	>	threadUnexpectedException(t);
1358	>	return null;
1359	>	}
1360	>	}
1361	>
1362	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1363	>	Runnable... throwingActions) {
1364	>	for (Runnable throwingAction : throwingActions) {
1365	>	boolean threw = false;
1366	>	try { throwingAction.run(); }
1367	>	catch (Throwable t) {
1368	>	threw = true;
1369	>	if (!expectedExceptionClass.isInstance(t)) {
1370	>	AssertionFailedError afe =
1371	>	new AssertionFailedError
1372	>	("Expected " + expectedExceptionClass.getName() +
1373	>	", got " + t.getClass().getName());
1374	>	afe.initCause(t);
1375	>	threadUnexpectedException(afe);
1376	>	}
1377	>	}
1378	>	if (!threw)
1379	>	shouldThrow(expectedExceptionClass.getName());
1380	>	}
1381		}
521	–
522	–
1382		}

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