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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.26 by dl, Thu Mar 31 15:24:29 2005 UTC vs.
Revision 1.133 by jsr166, Sun May 24 01:53:55 2015 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
5	<	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	<	* Pat Fisher, Mike Judd.
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5	>	* Other contributors include Andrew Wright, Jeffrey Hayes,
6	>	* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<	import java.security.*;
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
11	>
12	>	import java.io.ByteArrayInputStream;
13	>	import java.io.ByteArrayOutputStream;
14	>	import java.io.ObjectInputStream;
15	>	import java.io.ObjectOutputStream;
16	>	import java.lang.management.ManagementFactory;
17	>	import java.lang.management.ThreadInfo;
18	>	import java.lang.reflect.Method;
19	>	import java.security.CodeSource;
20	>	import java.security.Permission;
21	>	import java.security.PermissionCollection;
22	>	import java.security.Permissions;
23	>	import java.security.Policy;
24	>	import java.security.ProtectionDomain;
25	>	import java.security.SecurityPermission;
26	>	import java.util.ArrayList;
27	>	import java.util.Arrays;
28	>	import java.util.Date;
29	>	import java.util.Enumeration;
30	>	import java.util.Iterator;
31	>	import java.util.List;
32	>	import java.util.NoSuchElementException;
33	>	import java.util.PropertyPermission;
34	>	import java.util.concurrent.BlockingQueue;
35	>	import java.util.concurrent.Callable;
36	>	import java.util.concurrent.CountDownLatch;
37	>	import java.util.concurrent.CyclicBarrier;
38	>	import java.util.concurrent.ExecutorService;
39	>	import java.util.concurrent.Future;
40	>	import java.util.concurrent.RecursiveAction;
41	>	import java.util.concurrent.RecursiveTask;
42	>	import java.util.concurrent.RejectedExecutionHandler;
43	>	import java.util.concurrent.Semaphore;
44	>	import java.util.concurrent.ThreadFactory;
45	>	import java.util.concurrent.ThreadPoolExecutor;
46	>	import java.util.concurrent.TimeoutException;
47	>	import java.util.concurrent.atomic.AtomicReference;
48	>	import java.util.regex.Pattern;
49	>
50	>	import junit.framework.AssertionFailedError;
51	>	import junit.framework.Test;
52	>	import junit.framework.TestCase;
53	>	import junit.framework.TestResult;
54	>	import junit.framework.TestSuite;
55
56		/**
57		* Base class for JSR166 Junit TCK tests.  Defines some constants,
58		* utility methods and classes, as well as a simple framework for
59		* helping to make sure that assertions failing in generated threads
60		* cause the associated test that generated them to itself fail (which
61	<	* JUnit doe not otherwise arrange).  The rules for creating such
61	>	* JUnit does not otherwise arrange).  The rules for creating such
62		* tests are:
63		*
64		* <ol>
65		*
66		* <li> All assertions in code running in generated threads must use
67	<	* the forms {@link #threadFail} , {@link #threadAssertTrue} {@link
67	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
68		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
69	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
69	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
70		* particularly recommended) for other code to use these forms too.
71		* Only the most typically used JUnit assertion methods are defined
72		* this way, but enough to live with.</li>
73		*
74		* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
75	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
75	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
76		* them. These methods are used to clear and check for thread
77		* assertion failures.</li>
78		*
79	<	* <li>All delays and timeouts must use one of the constants <tt>
80	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
81	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
79	>	* <li>All delays and timeouts must use one of the constants {@code
80	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
81	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
82		* discriminable from zero time, and always allows enough time for the
83		* small amounts of computation (creating a thread, calling a few
84		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
85		* is always discriminable as larger than SHORT and smaller than
86		* MEDIUM.  And so on. These constants are set to conservative values,
87		* but even so, if there is ever any doubt, they can all be increased
88	<	* in one spot to rerun tests on slower platforms</li>
88	>	* in one spot to rerun tests on slower platforms.</li>
89		*
90		* <li> All threads generated must be joined inside each test case
91	<	* method (or <tt>fail</tt> to do so) before returning from the
92	<	* method. The <tt> joinPool</tt> method can be used to do this when
91	>	* method (or {@code fail} to do so) before returning from the
92	>	* method. The {@code joinPool} method can be used to do this when
93		* using Executors.</li>
94		*
95		* </ol>
96		*
97	<	* <p> <b>Other notes</b>
97	>	* <p><b>Other notes</b>
98		* <ul>
99		*
100		* <li> Usually, there is one testcase method per JSR166 method
#	Line 63 | Line 104 | import java.security.*;
104		* "normal" behaviors differ significantly. And sometimes testcases
105		* cover multiple methods when they cannot be tested in
106		* isolation.</li>
107	<	*
107	>	*
108		* <li> The documentation style for testcases is to provide as javadoc
109		* a simple sentence or two describing the property that the testcase
110		* method purports to test. The javadocs do not say anything about how
#	Line 80 | Line 121 | import java.security.*;
121		* any particular package to simplify things for people integrating
122		* them in TCK test suites.</li>
123		*
124	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
124	>	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
125		* runs all JSR166 unit tests.</li>
126		*
127		* </ul>
128		*/
129		public class JSR166TestCase extends TestCase {
130	+	private static final boolean useSecurityManager =
131	+	Boolean.getBoolean("jsr166.useSecurityManager");
132	+
133	+	protected static final boolean expensiveTests =
134	+	Boolean.getBoolean("jsr166.expensiveTests");
135	+
136	+	/**
137	+	* If true, also run tests that are not part of the official tck
138	+	* because they test unspecified implementation details.
139	+	*/
140	+	protected static final boolean testImplementationDetails =
141	+	Boolean.getBoolean("jsr166.testImplementationDetails");
142	+
143	+	/**
144	+	* If true, report on stdout all "slow" tests, that is, ones that
145	+	* take more than profileThreshold milliseconds to execute.
146	+	*/
147	+	private static final boolean profileTests =
148	+	Boolean.getBoolean("jsr166.profileTests");
149	+
150	+	/**
151	+	* The number of milliseconds that tests are permitted for
152	+	* execution without being reported, when profileTests is set.
153	+	*/
154	+	private static final long profileThreshold =
155	+	Long.getLong("jsr166.profileThreshold", 100);
156	+
157	+	/**
158	+	* The number of repetitions per test (for tickling rare bugs).
159	+	*/
160	+	private static final int runsPerTest =
161	+	Integer.getInteger("jsr166.runsPerTest", 1);
162	+
163	+	/**
164	+	* The number of repetitions of the test suite (for finding leaks?).
165	+	*/
166	+	private static final int suiteRuns =
167	+	Integer.getInteger("jsr166.suiteRuns", 1);
168	+
169	+	/**
170	+	* A filter for tests to run, matching strings of the form
171	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
172	+	* Usefully combined with jsr166.runsPerTest.
173	+	*/
174	+	private static final Pattern methodFilter = methodFilter();
175	+
176	+	private static Pattern methodFilter() {
177	+	String regex = System.getProperty("jsr166.methodFilter");
178	+	return (regex == null) ? null : Pattern.compile(regex);
179	+	}
180	+
181	+	protected void runTest() throws Throwable {
182	+	if (methodFilter == null
183	+	|| methodFilter.matcher(toString()).find()) {
184	+	for (int i = 0; i < runsPerTest; i++) {
185	+	if (profileTests)
186	+	runTestProfiled();
187	+	else
188	+	super.runTest();
189	+	}
190	+	}
191	+	}
192	+
193	+	protected void runTestProfiled() throws Throwable {
194	+	// Warmup run, notably to trigger all needed classloading.
195	+	super.runTest();
196	+	long t0 = System.nanoTime();
197	+	try {
198	+	super.runTest();
199	+	} finally {
200	+	long elapsedMillis = millisElapsedSince(t0);
201	+	if (elapsedMillis >= profileThreshold)
202	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
203	+	}
204	+	}
205	+
206	+	/**
207	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
208	+	*/
209	+	public static void main(String[] args) {
210	+	main(suite(), args);
211	+	}
212	+
213		/**
214	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
215	<	*/
216	<	public static void main (String[] args) {
217	<	int iters = 1;
218	<	if (args.length > 0)
219	<	iters = Integer.parseInt(args[0]);
220	<	Test s = suite();
221	<	for (int i = 0; i < iters; ++i) {
222	<	junit.textui.TestRunner.run (s);
214	>	* Runs all unit tests in the given test suite.
215	>	* Actual behavior influenced by jsr166.* system properties.
216	>	*/
217	>	static void main(Test suite, String[] args) {
218	>	if (useSecurityManager) {
219	>	System.err.println("Setting a permissive security manager");
220	>	Policy.setPolicy(permissivePolicy());
221	>	System.setSecurityManager(new SecurityManager());
222	>	}
223	>	for (int i = 0; i < suiteRuns; i++) {
224	>	TestResult result = junit.textui.TestRunner.run(suite);
225	>	if (!result.wasSuccessful())
226	>	System.exit(1);
227		System.gc();
228		System.runFinalization();
229		}
102	–	System.exit(0);
230		}
231
232	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
233	+	TestSuite suite = new TestSuite();
234	+	for (Object suiteOrClass : suiteOrClasses) {
235	+	if (suiteOrClass instanceof TestSuite)
236	+	suite.addTest((TestSuite) suiteOrClass);
237	+	else if (suiteOrClass instanceof Class)
238	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
239	+	else
240	+	throw new ClassCastException("not a test suite or class");
241	+	}
242	+	return suite;
243	+	}
244	+
245	+	public static void addNamedTestClasses(TestSuite suite,
246	+	String... testClassNames) {
247	+	for (String testClassName : testClassNames) {
248	+	try {
249	+	Class<?> testClass = Class.forName(testClassName);
250	+	Method m = testClass.getDeclaredMethod("suite",
251	+	new Class<?>[0]);
252	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
253	+	} catch (Exception e) {
254	+	throw new Error("Missing test class", e);
255	+	}
256	+	}
257	+	}
258	+
259	+	public static final double JAVA_CLASS_VERSION;
260	+	public static final String JAVA_SPECIFICATION_VERSION;
261	+	static {
262	+	try {
263	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
264	+	new java.security.PrivilegedAction<Double>() {
265	+	public Double run() {
266	+	return Double.valueOf(System.getProperty("java.class.version"));}});
267	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
268	+	new java.security.PrivilegedAction<String>() {
269	+	public String run() {
270	+	return System.getProperty("java.specification.version");}});
271	+	} catch (Throwable t) {
272	+	throw new Error(t);
273	+	}
274	+	}
275	+
276	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
277	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
278	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
279	+	public static boolean atLeastJava9() { return JAVA_CLASS_VERSION >= 53.0; }
280	+
281		/**
282	<	* Collects all JSR166 unit tests as one suite
283	<	*/
284	<	public static Test suite ( ) {
285	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
286	<
287	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
288	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
289	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
290	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
291	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
292	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
293	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
294	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
295	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
296	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
297	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
298	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
299	<	suite.addTest(new TestSuite(AtomicLongTest.class));
300	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
301	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
302	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
303	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
304	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
305	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
306	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
307	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
308	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
309	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
310	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
311	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
312	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
313	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
314	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
315	<	suite.addTest(new TestSuite(DelayQueueTest.class));
316	<	suite.addTest(new TestSuite(ExchangerTest.class));
317	<	suite.addTest(new TestSuite(ExecutorsTest.class));
318	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
319	<	suite.addTest(new TestSuite(FutureTaskTest.class));
320	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
321	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
322	<	suite.addTest(new TestSuite(LinkedListTest.class));
323	<	suite.addTest(new TestSuite(LockSupportTest.class));
324	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
325	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
326	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
327	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
328	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
329	<	suite.addTest(new TestSuite(SemaphoreTest.class));
330	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
331	<	suite.addTest(new TestSuite(SystemTest.class));
332	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
333	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
334	<	suite.addTest(new TestSuite(ThreadTest.class));
335	<	suite.addTest(new TestSuite(TimeUnitTest.class));
336	<	suite.addTest(new TestSuite(TreeMapTest.class));
337	<	suite.addTest(new TestSuite(TreeSetTest.class));
338	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
339	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
340	<
282	>	* Collects all JSR166 unit tests as one suite.
283	>	*/
284	>	public static Test suite() {
285	>	// Java7+ test classes
286	>	TestSuite suite = newTestSuite(
287	>	ForkJoinPoolTest.suite(),
288	>	ForkJoinTaskTest.suite(),
289	>	RecursiveActionTest.suite(),
290	>	RecursiveTaskTest.suite(),
291	>	LinkedTransferQueueTest.suite(),
292	>	PhaserTest.suite(),
293	>	ThreadLocalRandomTest.suite(),
294	>	AbstractExecutorServiceTest.suite(),
295	>	AbstractQueueTest.suite(),
296	>	AbstractQueuedSynchronizerTest.suite(),
297	>	AbstractQueuedLongSynchronizerTest.suite(),
298	>	ArrayBlockingQueueTest.suite(),
299	>	ArrayDequeTest.suite(),
300	>	AtomicBooleanTest.suite(),
301	>	AtomicIntegerArrayTest.suite(),
302	>	AtomicIntegerFieldUpdaterTest.suite(),
303	>	AtomicIntegerTest.suite(),
304	>	AtomicLongArrayTest.suite(),
305	>	AtomicLongFieldUpdaterTest.suite(),
306	>	AtomicLongTest.suite(),
307	>	AtomicMarkableReferenceTest.suite(),
308	>	AtomicReferenceArrayTest.suite(),
309	>	AtomicReferenceFieldUpdaterTest.suite(),
310	>	AtomicReferenceTest.suite(),
311	>	AtomicStampedReferenceTest.suite(),
312	>	ConcurrentHashMapTest.suite(),
313	>	ConcurrentLinkedDequeTest.suite(),
314	>	ConcurrentLinkedQueueTest.suite(),
315	>	ConcurrentSkipListMapTest.suite(),
316	>	ConcurrentSkipListSubMapTest.suite(),
317	>	ConcurrentSkipListSetTest.suite(),
318	>	ConcurrentSkipListSubSetTest.suite(),
319	>	CopyOnWriteArrayListTest.suite(),
320	>	CopyOnWriteArraySetTest.suite(),
321	>	CountDownLatchTest.suite(),
322	>	CyclicBarrierTest.suite(),
323	>	DelayQueueTest.suite(),
324	>	EntryTest.suite(),
325	>	ExchangerTest.suite(),
326	>	ExecutorsTest.suite(),
327	>	ExecutorCompletionServiceTest.suite(),
328	>	FutureTaskTest.suite(),
329	>	LinkedBlockingDequeTest.suite(),
330	>	LinkedBlockingQueueTest.suite(),
331	>	LinkedListTest.suite(),
332	>	LockSupportTest.suite(),
333	>	PriorityBlockingQueueTest.suite(),
334	>	PriorityQueueTest.suite(),
335	>	ReentrantLockTest.suite(),
336	>	ReentrantReadWriteLockTest.suite(),
337	>	ScheduledExecutorTest.suite(),
338	>	ScheduledExecutorSubclassTest.suite(),
339	>	SemaphoreTest.suite(),
340	>	SynchronousQueueTest.suite(),
341	>	SystemTest.suite(),
342	>	ThreadLocalTest.suite(),
343	>	ThreadPoolExecutorTest.suite(),
344	>	ThreadPoolExecutorSubclassTest.suite(),
345	>	ThreadTest.suite(),
346	>	TimeUnitTest.suite(),
347	>	TreeMapTest.suite(),
348	>	TreeSetTest.suite(),
349	>	TreeSubMapTest.suite(),
350	>	TreeSubSetTest.suite());
351	>
352	>	// Java8+ test classes
353	>	if (atLeastJava8()) {
354	>	String[] java8TestClassNames = {
355	>	"Atomic8Test",
356	>	"CompletableFutureTest",
357	>	"ConcurrentHashMap8Test",
358	>	"CountedCompleterTest",
359	>	"DoubleAccumulatorTest",
360	>	"DoubleAdderTest",
361	>	"ForkJoinPool8Test",
362	>	"ForkJoinTask8Test",
363	>	"LongAccumulatorTest",
364	>	"LongAdderTest",
365	>	"SplittableRandomTest",
366	>	"StampedLockTest",
367	>	"ThreadLocalRandom8Test",
368	>	};
369	>	addNamedTestClasses(suite, java8TestClassNames);
370	>	}
371	>
372	>	// Java9+ test classes
373	>	if (atLeastJava9()) {
374	>	String[] java9TestClassNames = {
375	>	"ThreadPoolExecutor9Test",
376	>	};
377	>	addNamedTestClasses(suite, java9TestClassNames);
378	>	}
379	>
380		return suite;
381		}
382
383	+	// Delays for timing-dependent tests, in milliseconds.
384
385		public static long SHORT_DELAY_MS;
386		public static long SMALL_DELAY_MS;
387		public static long MEDIUM_DELAY_MS;
388		public static long LONG_DELAY_MS;
389
174	–
390		/**
391	<	* Return the shortest timed delay. This could
391	>	* Returns the shortest timed delay. This could
392		* be reimplemented to use for example a Property.
393	<	*/
393	>	*/
394		protected long getShortDelay() {
395		return 50;
396		}
397
183	–
398		/**
399	<	* Set delays as multiples of SHORT_DELAY.
399	>	* Sets delays as multiples of SHORT_DELAY.
400		*/
401	<	protected  void setDelays() {
401	>	protected void setDelays() {
402		SHORT_DELAY_MS = getShortDelay();
403	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
403	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
404		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
405	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
405	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
406		}
407
408		/**
409	<	* Flag set true if any threadAssert methods fail
409	>	* Returns a timeout in milliseconds to be used in tests that
410	>	* verify that operations block or time out.
411		*/
412	<	volatile boolean threadFailed;
412	>	long timeoutMillis() {
413	>	return SHORT_DELAY_MS / 4;
414	>	}
415
416		/**
417	<	* Initialize test to indicate that no thread assertions have failed
417	>	* Returns a new Date instance representing a time delayMillis
418	>	* milliseconds in the future.
419		*/
420	<	public void setUp() {
420	>	Date delayedDate(long delayMillis) {
421	>	return new Date(System.currentTimeMillis() + delayMillis);
422	>	}
423	>
424	>	/**
425	>	* The first exception encountered if any threadAssertXXX method fails.
426	>	*/
427	>	private final AtomicReference<Throwable> threadFailure
428	>	= new AtomicReference<Throwable>(null);
429	>
430	>	/**
431	>	* Records an exception so that it can be rethrown later in the test
432	>	* harness thread, triggering a test case failure.  Only the first
433	>	* failure is recorded; subsequent calls to this method from within
434	>	* the same test have no effect.
435	>	*/
436	>	public void threadRecordFailure(Throwable t) {
437	>	threadFailure.compareAndSet(null, t);
438	>	}
439	>
440	>	public void setUp() {
441		setDelays();
204	–	threadFailed = false;
442		}
443
444		/**
445	<	* Trigger test case failure if any thread assertions have failed
445	>	* Extra checks that get done for all test cases.
446	>	*
447	>	* Triggers test case failure if any thread assertions have failed,
448	>	* by rethrowing, in the test harness thread, any exception recorded
449	>	* earlier by threadRecordFailure.
450	>	*
451	>	* Triggers test case failure if interrupt status is set in the main thread.
452		*/
453	<	public void tearDown() {
454	<	assertFalse(threadFailed);
453	>	public void tearDown() throws Exception {
454	>	Throwable t = threadFailure.getAndSet(null);
455	>	if (t != null) {
456	>	if (t instanceof Error)
457	>	throw (Error) t;
458	>	else if (t instanceof RuntimeException)
459	>	throw (RuntimeException) t;
460	>	else if (t instanceof Exception)
461	>	throw (Exception) t;
462	>	else {
463	>	AssertionFailedError afe =
464	>	new AssertionFailedError(t.toString());
465	>	afe.initCause(t);
466	>	throw afe;
467	>	}
468	>	}
469	>
470	>	if (Thread.interrupted())
471	>	throw new AssertionFailedError("interrupt status set in main thread");
472	>
473	>	checkForkJoinPoolThreadLeaks();
474	>	}
475	>
476	>	/**
477	>	* Finds missing try { ... } finally { joinPool(e); }
478	>	*/
479	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
480	>	Thread[] survivors = new Thread[5];
481	>	int count = Thread.enumerate(survivors);
482	>	for (int i = 0; i < count; i++) {
483	>	Thread thread = survivors[i];
484	>	String name = thread.getName();
485	>	if (name.startsWith("ForkJoinPool-")) {
486	>	// give thread some time to terminate
487	>	thread.join(LONG_DELAY_MS);
488	>	if (!thread.isAlive()) continue;
489	>	throw new AssertionFailedError
490	>	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
491	>	toString(), name));
492	>	}
493	>	}
494		}
495
496		/**
497	<	* Fail, also setting status to indicate current testcase should fail
498	<	*/
497	>	* Just like fail(reason), but additionally recording (using
498	>	* threadRecordFailure) any AssertionFailedError thrown, so that
499	>	* the current testcase will fail.
500	>	*/
501		public void threadFail(String reason) {
502	<	threadFailed = true;
503	<	fail(reason);
502	>	try {
503	>	fail(reason);
504	>	} catch (AssertionFailedError t) {
505	>	threadRecordFailure(t);
506	>	fail(reason);
507	>	}
508		}
509
510		/**
511	<	* If expression not true, set status to indicate current testcase
512	<	* should fail
513	<	*/
511	>	* Just like assertTrue(b), but additionally recording (using
512	>	* threadRecordFailure) any AssertionFailedError thrown, so that
513	>	* the current testcase will fail.
514	>	*/
515		public void threadAssertTrue(boolean b) {
516	<	if (!b) {
228	<	threadFailed = true;
516	>	try {
517		assertTrue(b);
518	+	} catch (AssertionFailedError t) {
519	+	threadRecordFailure(t);
520	+	throw t;
521		}
522		}
523
524		/**
525	<	* If expression not false, set status to indicate current testcase
526	<	* should fail
527	<	*/
525	>	* Just like assertFalse(b), but additionally recording (using
526	>	* threadRecordFailure) any AssertionFailedError thrown, so that
527	>	* the current testcase will fail.
528	>	*/
529		public void threadAssertFalse(boolean b) {
530	<	if (b) {
239	<	threadFailed = true;
530	>	try {
531		assertFalse(b);
532	+	} catch (AssertionFailedError t) {
533	+	threadRecordFailure(t);
534	+	throw t;
535		}
536		}
537
538		/**
539	<	* If argument not null, set status to indicate current testcase
540	<	* should fail
541	<	*/
539	>	* Just like assertNull(x), but additionally recording (using
540	>	* threadRecordFailure) any AssertionFailedError thrown, so that
541	>	* the current testcase will fail.
542	>	*/
543		public void threadAssertNull(Object x) {
544	<	if (x != null) {
250	<	threadFailed = true;
544	>	try {
545		assertNull(x);
546	+	} catch (AssertionFailedError t) {
547	+	threadRecordFailure(t);
548	+	throw t;
549		}
550		}
551
552		/**
553	<	* If arguments not equal, set status to indicate current testcase
554	<	* should fail
555	<	*/
553	>	* Just like assertEquals(x, y), but additionally recording (using
554	>	* threadRecordFailure) any AssertionFailedError thrown, so that
555	>	* the current testcase will fail.
556	>	*/
557		public void threadAssertEquals(long x, long y) {
558	<	if (x != y) {
261	<	threadFailed = true;
558	>	try {
559		assertEquals(x, y);
560	+	} catch (AssertionFailedError t) {
561	+	threadRecordFailure(t);
562	+	throw t;
563		}
564		}
565
566		/**
567	<	* If arguments not equal, set status to indicate current testcase
568	<	* should fail
569	<	*/
567	>	* Just like assertEquals(x, y), but additionally recording (using
568	>	* threadRecordFailure) any AssertionFailedError thrown, so that
569	>	* the current testcase will fail.
570	>	*/
571		public void threadAssertEquals(Object x, Object y) {
572	<	if (x != y && (x == null || !x.equals(y))) {
272	<	threadFailed = true;
572	>	try {
573		assertEquals(x, y);
574	+	} catch (AssertionFailedError fail) {
575	+	threadRecordFailure(fail);
576	+	throw fail;
577	+	} catch (Throwable fail) {
578	+	threadUnexpectedException(fail);
579		}
580		}
581
582		/**
583	<	* threadFail with message "should throw exception"
584	<	*/
583	>	* Just like assertSame(x, y), but additionally recording (using
584	>	* threadRecordFailure) any AssertionFailedError thrown, so that
585	>	* the current testcase will fail.
586	>	*/
587	>	public void threadAssertSame(Object x, Object y) {
588	>	try {
589	>	assertSame(x, y);
590	>	} catch (AssertionFailedError fail) {
591	>	threadRecordFailure(fail);
592	>	throw fail;
593	>	}
594	>	}
595	>
596	>	/**
597	>	* Calls threadFail with message "should throw exception".
598	>	*/
599		public void threadShouldThrow() {
600	<	threadFailed = true;
601	<	fail("should throw exception");
600	>	threadFail("should throw exception");
601	>	}
602	>
603	>	/**
604	>	* Calls threadFail with message "should throw" + exceptionName.
605	>	*/
606	>	public void threadShouldThrow(String exceptionName) {
607	>	threadFail("should throw " + exceptionName);
608		}
609
610		/**
611	<	* threadFail with message "Unexpected exception"
611	>	* Records the given exception using {@link #threadRecordFailure},
612	>	* then rethrows the exception, wrapping it in an
613	>	* AssertionFailedError if necessary.
614		*/
615	<	public void threadUnexpectedException() {
616	<	threadFailed = true;
617	<	fail("Unexpected exception");
615	>	public void threadUnexpectedException(Throwable t) {
616	>	threadRecordFailure(t);
617	>	t.printStackTrace();
618	>	if (t instanceof RuntimeException)
619	>	throw (RuntimeException) t;
620	>	else if (t instanceof Error)
621	>	throw (Error) t;
622	>	else {
623	>	AssertionFailedError afe =
624	>	new AssertionFailedError("unexpected exception: " + t);
625	>	afe.initCause(t);
626	>	throw afe;
627	>	}
628		}
629
630	+	/**
631	+	* Delays, via Thread.sleep, for the given millisecond delay, but
632	+	* if the sleep is shorter than specified, may re-sleep or yield
633	+	* until time elapses.
634	+	*/
635	+	static void delay(long millis) throws InterruptedException {
636	+	long startTime = System.nanoTime();
637	+	long ns = millis * 1000 * 1000;
638	+	for (;;) {
639	+	if (millis > 0L)
640	+	Thread.sleep(millis);
641	+	else // too short to sleep
642	+	Thread.yield();
643	+	long d = ns - (System.nanoTime() - startTime);
644	+	if (d > 0L)
645	+	millis = d / (1000 * 1000);
646	+	else
647	+	break;
648	+	}
649	+	}
650
651		/**
652	<	* Wait out termination of a thread pool or fail doing so
652	>	* Waits out termination of a thread pool or fails doing so.
653		*/
654	<	public void joinPool(ExecutorService exec) {
654	>	void joinPool(ExecutorService exec) {
655		try {
656		exec.shutdown();
657	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
658	<	} catch(SecurityException ok) {
657	>	if (!exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS))
658	>	fail("ExecutorService " + exec +
659	>	" did not terminate in a timely manner");
660	>	} catch (SecurityException ok) {
661		// Allowed in case test doesn't have privs
662	<	} catch(InterruptedException ie) {
663	<	fail("Unexpected exception");
662	>	} catch (InterruptedException fail) {
663	>	fail("Unexpected InterruptedException");
664	>	}
665	>	}
666	>
667	>	/**
668	>	* A debugging tool to print all stack traces, as jstack does.
669	>	*/
670	>	static void printAllStackTraces() {
671	>	for (ThreadInfo info :
672	>	ManagementFactory.getThreadMXBean()
673	>	.dumpAllThreads(true, true))
674	>	System.err.print(info);
675	>	}
676	>
677	>	/**
678	>	* Checks that thread does not terminate within the default
679	>	* millisecond delay of {@code timeoutMillis()}.
680	>	*/
681	>	void assertThreadStaysAlive(Thread thread) {
682	>	assertThreadStaysAlive(thread, timeoutMillis());
683	>	}
684	>
685	>	/**
686	>	* Checks that thread does not terminate within the given millisecond delay.
687	>	*/
688	>	void assertThreadStaysAlive(Thread thread, long millis) {
689	>	try {
690	>	// No need to optimize the failing case via Thread.join.
691	>	delay(millis);
692	>	assertTrue(thread.isAlive());
693	>	} catch (InterruptedException fail) {
694	>	fail("Unexpected InterruptedException");
695	>	}
696	>	}
697	>
698	>	/**
699	>	* Checks that the threads do not terminate within the default
700	>	* millisecond delay of {@code timeoutMillis()}.
701	>	*/
702	>	void assertThreadsStayAlive(Thread... threads) {
703	>	assertThreadsStayAlive(timeoutMillis(), threads);
704	>	}
705	>
706	>	/**
707	>	* Checks that the threads do not terminate within the given millisecond delay.
708	>	*/
709	>	void assertThreadsStayAlive(long millis, Thread... threads) {
710	>	try {
711	>	// No need to optimize the failing case via Thread.join.
712	>	delay(millis);
713	>	for (Thread thread : threads)
714	>	assertTrue(thread.isAlive());
715	>	} catch (InterruptedException fail) {
716	>	fail("Unexpected InterruptedException");
717		}
718		}
719
720	+	/**
721	+	* Checks that future.get times out, with the default timeout of
722	+	* {@code timeoutMillis()}.
723	+	*/
724	+	void assertFutureTimesOut(Future future) {
725	+	assertFutureTimesOut(future, timeoutMillis());
726	+	}
727
728		/**
729	<	* fail with message "should throw exception"
730	<	*/
729	>	* Checks that future.get times out, with the given millisecond timeout.
730	>	*/
731	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
732	>	long startTime = System.nanoTime();
733	>	try {
734	>	future.get(timeoutMillis, MILLISECONDS);
735	>	shouldThrow();
736	>	} catch (TimeoutException success) {
737	>	} catch (Exception fail) {
738	>	threadUnexpectedException(fail);
739	>	} finally { future.cancel(true); }
740	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
741	>	}
742	>
743	>	/**
744	>	* Fails with message "should throw exception".
745	>	*/
746		public void shouldThrow() {
747		fail("Should throw exception");
748		}
749
750		/**
751	<	* fail with message "Unexpected exception"
751	>	* Fails with message "should throw " + exceptionName.
752		*/
753	<	public void unexpectedException() {
754	<	fail("Unexpected exception");
753	>	public void shouldThrow(String exceptionName) {
754	>	fail("Should throw " + exceptionName);
755		}
756
323	–
757		/**
758		* The number of elements to place in collections, arrays, etc.
759		*/
760	<	static final int SIZE = 20;
760	>	public static final int SIZE = 20;
761
762		// Some convenient Integer constants
763
764	<	static final Integer zero = new Integer(0);
765	<	static final Integer one = new Integer(1);
766	<	static final Integer two = new Integer(2);
767	<	static final Integer three  = new Integer(3);
768	<	static final Integer four  = new Integer(4);
769	<	static final Integer five  = new Integer(5);
770	<	static final Integer six = new Integer(6);
771	<	static final Integer seven = new Integer(7);
772	<	static final Integer eight = new Integer(8);
773	<	static final Integer nine = new Integer(9);
774	<	static final Integer m1  = new Integer(-1);
775	<	static final Integer m2  = new Integer(-2);
776	<	static final Integer m3  = new Integer(-3);
777	<	static final Integer m4 = new Integer(-4);
778	<	static final Integer m5 = new Integer(-5);
779	<	static final Integer m10 = new Integer(-10);
764	>	public static final Integer zero  = new Integer(0);
765	>	public static final Integer one   = new Integer(1);
766	>	public static final Integer two   = new Integer(2);
767	>	public static final Integer three = new Integer(3);
768	>	public static final Integer four  = new Integer(4);
769	>	public static final Integer five  = new Integer(5);
770	>	public static final Integer six   = new Integer(6);
771	>	public static final Integer seven = new Integer(7);
772	>	public static final Integer eight = new Integer(8);
773	>	public static final Integer nine  = new Integer(9);
774	>	public static final Integer m1  = new Integer(-1);
775	>	public static final Integer m2  = new Integer(-2);
776	>	public static final Integer m3  = new Integer(-3);
777	>	public static final Integer m4  = new Integer(-4);
778	>	public static final Integer m5  = new Integer(-5);
779	>	public static final Integer m6  = new Integer(-6);
780	>	public static final Integer m10 = new Integer(-10);
781	>
782	>	/**
783	>	* Runs Runnable r with a security policy that permits precisely
784	>	* the specified permissions.  If there is no current security
785	>	* manager, the runnable is run twice, both with and without a
786	>	* security manager.  We require that any security manager permit
787	>	* getPolicy/setPolicy.
788	>	*/
789	>	public void runWithPermissions(Runnable r, Permission... permissions) {
790	>	SecurityManager sm = System.getSecurityManager();
791	>	if (sm == null) {
792	>	r.run();
793	>	}
794	>	runWithSecurityManagerWithPermissions(r, permissions);
795	>	}
796	>
797	>	/**
798	>	* Runs Runnable r with a security policy that permits precisely
799	>	* the specified permissions.  If there is no current security
800	>	* manager, a temporary one is set for the duration of the
801	>	* Runnable.  We require that any security manager permit
802	>	* getPolicy/setPolicy.
803	>	*/
804	>	public void runWithSecurityManagerWithPermissions(Runnable r,
805	>	Permission... permissions) {
806	>	SecurityManager sm = System.getSecurityManager();
807	>	if (sm == null) {
808	>	Policy savedPolicy = Policy.getPolicy();
809	>	try {
810	>	Policy.setPolicy(permissivePolicy());
811	>	System.setSecurityManager(new SecurityManager());
812	>	runWithSecurityManagerWithPermissions(r, permissions);
813	>	} finally {
814	>	System.setSecurityManager(null);
815	>	Policy.setPolicy(savedPolicy);
816	>	}
817	>	} else {
818	>	Policy savedPolicy = Policy.getPolicy();
819	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
820	>	Policy.setPolicy(policy);
821
822	+	try {
823	+	r.run();
824	+	} finally {
825	+	policy.addPermission(new SecurityPermission("setPolicy"));
826	+	Policy.setPolicy(savedPolicy);
827	+	}
828	+	}
829	+	}
830	+
831	+	/**
832	+	* Runs a runnable without any permissions.
833	+	*/
834	+	public void runWithoutPermissions(Runnable r) {
835	+	runWithPermissions(r);
836	+	}
837
838		/**
839		* A security policy where new permissions can be dynamically added
840		* or all cleared.
841		*/
842	<	static class AdjustablePolicy extends java.security.Policy {
842	>	public static class AdjustablePolicy extends java.security.Policy {
843		Permissions perms = new Permissions();
844	<	AdjustablePolicy() { }
844	>	AdjustablePolicy(Permission... permissions) {
845	>	for (Permission permission : permissions)
846	>	perms.add(permission);
847	>	}
848		void addPermission(Permission perm) { perms.add(perm); }
849		void clearPermissions() { perms = new Permissions(); }
850	<	public PermissionCollection getPermissions(CodeSource cs) {
851	<	return perms;
852	<	}
853	<	public PermissionCollection getPermissions(ProtectionDomain pd) {
854	<	return perms;
855	<	}
856	<	public boolean implies(ProtectionDomain pd, Permission p) {
857	<	return perms.implies(p);
858	<	}
859	<	public void refresh() {}
850	>	public PermissionCollection getPermissions(CodeSource cs) {
851	>	return perms;
852	>	}
853	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
854	>	return perms;
855	>	}
856	>	public boolean implies(ProtectionDomain pd, Permission p) {
857	>	return perms.implies(p);
858	>	}
859	>	public void refresh() {}
860	>	public String toString() {
861	>	List<Permission> ps = new ArrayList<Permission>();
862	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
863	>	ps.add(e.nextElement());
864	>	return "AdjustablePolicy with permissions " + ps;
865	>	}
866		}
867
868	+	/**
869	+	* Returns a policy containing all the permissions we ever need.
870	+	*/
871	+	public static Policy permissivePolicy() {
872	+	return new AdjustablePolicy
873	+	// Permissions j.u.c. needs directly
874	+	(new RuntimePermission("modifyThread"),
875	+	new RuntimePermission("getClassLoader"),
876	+	new RuntimePermission("setContextClassLoader"),
877	+	// Permissions needed to change permissions!
878	+	new SecurityPermission("getPolicy"),
879	+	new SecurityPermission("setPolicy"),
880	+	new RuntimePermission("setSecurityManager"),
881	+	// Permissions needed by the junit test harness
882	+	new RuntimePermission("accessDeclaredMembers"),
883	+	new PropertyPermission("*", "read"),
884	+	new java.io.FilePermission("<<ALL FILES>>", "read"));
885	+	}
886
887	<	// Some convenient Runnable classes
887	>	/**
888	>	* Sleeps until the given time has elapsed.
889	>	* Throws AssertionFailedError if interrupted.
890	>	*/
891	>	void sleep(long millis) {
892	>	try {
893	>	delay(millis);
894	>	} catch (InterruptedException fail) {
895	>	AssertionFailedError afe =
896	>	new AssertionFailedError("Unexpected InterruptedException");
897	>	afe.initCause(fail);
898	>	throw afe;
899	>	}
900	>	}
901
902	<	static class NoOpRunnable implements Runnable {
903	<	public void run() {}
902	>	/**
903	>	* Spin-waits up to the specified number of milliseconds for the given
904	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
905	>	*/
906	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
907	>	long startTime = System.nanoTime();
908	>	for (;;) {
909	>	Thread.State s = thread.getState();
910	>	if (s == Thread.State.BLOCKED ||
911	>	s == Thread.State.WAITING ||
912	>	s == Thread.State.TIMED_WAITING)
913	>	return;
914	>	else if (s == Thread.State.TERMINATED)
915	>	fail("Unexpected thread termination");
916	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
917	>	threadAssertTrue(thread.isAlive());
918	>	return;
919	>	}
920	>	Thread.yield();
921	>	}
922		}
923
924	<	static class NoOpCallable implements Callable {
925	<	public Object call() { return Boolean.TRUE; }
924	>	/**
925	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
926	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
927	>	*/
928	>	void waitForThreadToEnterWaitState(Thread thread) {
929	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
930		}
931
932	<	static final String TEST_STRING = "a test string";
932	>	/**
933	>	* Returns the number of milliseconds since time given by
934	>	* startNanoTime, which must have been previously returned from a
935	>	* call to {@link System#nanoTime()}.
936	>	*/
937	>	static long millisElapsedSince(long startNanoTime) {
938	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
939	>	}
940
941	<	static class StringTask implements Callable<String> {
942	<	public String call() { return TEST_STRING; }
941	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
942	>	//         long startTime = System.nanoTime();
943	>	//         try {
944	>	//             r.run();
945	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
946	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
947	>	//             throw new AssertionFailedError("did not return promptly");
948	>	//     }
949	>
950	>	//     void assertTerminatesPromptly(Runnable r) {
951	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
952	>	//     }
953	>
954	>	/**
955	>	* Checks that timed f.get() returns the expected value, and does not
956	>	* wait for the timeout to elapse before returning.
957	>	*/
958	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
959	>	long startTime = System.nanoTime();
960	>	try {
961	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
962	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
963	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
964	>	throw new AssertionFailedError("timed get did not return promptly");
965		}
966
967	<	static class NPETask implements Callable<String> {
968	<	public String call() { throw new NullPointerException(); }
967	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
968	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
969		}
970
971	<	static class CallableOne implements Callable<Integer> {
972	<	public Integer call() { return one; }
971	>	/**
972	>	* Returns a new started daemon Thread running the given runnable.
973	>	*/
974	>	Thread newStartedThread(Runnable runnable) {
975	>	Thread t = new Thread(runnable);
976	>	t.setDaemon(true);
977	>	t.start();
978	>	return t;
979		}
980
981	<	class ShortRunnable implements Runnable {
982	<	public void run() {
983	<	try {
984	<	Thread.sleep(SHORT_DELAY_MS);
985	<	}
986	<	catch(Exception e) {
987	<	threadUnexpectedException();
981	>	/**
982	>	* Waits for the specified time (in milliseconds) for the thread
983	>	* to terminate (using {@link Thread#join(long)}), else interrupts
984	>	* the thread (in the hope that it may terminate later) and fails.
985	>	*/
986	>	void awaitTermination(Thread t, long timeoutMillis) {
987	>	try {
988	>	t.join(timeoutMillis);
989	>	} catch (InterruptedException fail) {
990	>	threadUnexpectedException(fail);
991	>	} finally {
992	>	if (t.getState() != Thread.State.TERMINATED) {
993	>	t.interrupt();
994	>	fail("Test timed out");
995		}
996		}
997		}
998
999	<	class ShortInterruptedRunnable implements Runnable {
1000	<	public void run() {
999	>	/**
1000	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1001	>	* terminate (using {@link Thread#join(long)}), else interrupts
1002	>	* the thread (in the hope that it may terminate later) and fails.
1003	>	*/
1004	>	void awaitTermination(Thread t) {
1005	>	awaitTermination(t, LONG_DELAY_MS);
1006	>	}
1007	>
1008	>	// Some convenient Runnable classes
1009	>
1010	>	public abstract class CheckedRunnable implements Runnable {
1011	>	protected abstract void realRun() throws Throwable;
1012	>
1013	>	public final void run() {
1014		try {
1015	<	Thread.sleep(SHORT_DELAY_MS);
1016	<	threadShouldThrow();
1017	<	}
412	<	catch(InterruptedException success) {
1015	>	realRun();
1016	>	} catch (Throwable fail) {
1017	>	threadUnexpectedException(fail);
1018		}
1019		}
1020		}
1021
1022	<	class SmallRunnable implements Runnable {
1023	<	public void run() {
1022	>	public abstract class RunnableShouldThrow implements Runnable {
1023	>	protected abstract void realRun() throws Throwable;
1024	>
1025	>	final Class<?> exceptionClass;
1026	>
1027	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1028	>	this.exceptionClass = exceptionClass;
1029	>	}
1030	>
1031	>	public final void run() {
1032		try {
1033	<	Thread.sleep(SMALL_DELAY_MS);
1034	<	}
1035	<	catch(Exception e) {
1036	<	threadUnexpectedException();
1033	>	realRun();
1034	>	threadShouldThrow(exceptionClass.getSimpleName());
1035	>	} catch (Throwable t) {
1036	>	if (! exceptionClass.isInstance(t))
1037	>	threadUnexpectedException(t);
1038		}
1039		}
1040		}
1041
1042	<	class SmallPossiblyInterruptedRunnable implements Runnable {
1043	<	public void run() {
1042	>	public abstract class ThreadShouldThrow extends Thread {
1043	>	protected abstract void realRun() throws Throwable;
1044	>
1045	>	final Class<?> exceptionClass;
1046	>
1047	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1048	>	this.exceptionClass = exceptionClass;
1049	>	}
1050	>
1051	>	public final void run() {
1052		try {
1053	<	Thread.sleep(SMALL_DELAY_MS);
1054	<	}
1055	<	catch(Exception e) {
1053	>	realRun();
1054	>	threadShouldThrow(exceptionClass.getSimpleName());
1055	>	} catch (Throwable t) {
1056	>	if (! exceptionClass.isInstance(t))
1057	>	threadUnexpectedException(t);
1058		}
1059		}
1060		}
1061
1062	<	class SmallCallable implements Callable {
1063	<	public Object call() {
1062	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1063	>	protected abstract void realRun() throws Throwable;
1064	>
1065	>	public final void run() {
1066		try {
1067	<	Thread.sleep(SMALL_DELAY_MS);
1068	<	}
1069	<	catch(Exception e) {
1070	<	threadUnexpectedException();
1067	>	realRun();
1068	>	threadShouldThrow("InterruptedException");
1069	>	} catch (InterruptedException success) {
1070	>	threadAssertFalse(Thread.interrupted());
1071	>	} catch (Throwable fail) {
1072	>	threadUnexpectedException(fail);
1073		}
446	–	return Boolean.TRUE;
1074		}
1075		}
1076
1077	<	class SmallInterruptedRunnable implements Runnable {
1078	<	public void run() {
1077	>	public abstract class CheckedCallable<T> implements Callable<T> {
1078	>	protected abstract T realCall() throws Throwable;
1079	>
1080	>	public final T call() {
1081		try {
1082	<	Thread.sleep(SMALL_DELAY_MS);
1083	<	threadShouldThrow();
1084	<	}
1085	<	catch(InterruptedException success) {
1082	>	return realCall();
1083	>	} catch (Throwable fail) {
1084	>	threadUnexpectedException(fail);
1085	>	return null;
1086		}
1087		}
1088		}
1089
1090	+	public abstract class CheckedInterruptedCallable<T>
1091	+	implements Callable<T> {
1092	+	protected abstract T realCall() throws Throwable;
1093
1094	<	class MediumRunnable implements Runnable {
463	<	public void run() {
1094	>	public final T call() {
1095		try {
1096	<	Thread.sleep(MEDIUM_DELAY_MS);
1097	<	}
1098	<	catch(Exception e) {
1099	<	threadUnexpectedException();
1096	>	T result = realCall();
1097	>	threadShouldThrow("InterruptedException");
1098	>	return result;
1099	>	} catch (InterruptedException success) {
1100	>	threadAssertFalse(Thread.interrupted());
1101	>	} catch (Throwable fail) {
1102	>	threadUnexpectedException(fail);
1103		}
1104	+	return null;
1105		}
1106		}
1107
1108	<	class MediumInterruptedRunnable implements Runnable {
1109	<	public void run() {
1108	>	public static class NoOpRunnable implements Runnable {
1109	>	public void run() {}
1110	>	}
1111	>
1112	>	public static class NoOpCallable implements Callable {
1113	>	public Object call() { return Boolean.TRUE; }
1114	>	}
1115	>
1116	>	public static final String TEST_STRING = "a test string";
1117	>
1118	>	public static class StringTask implements Callable<String> {
1119	>	public String call() { return TEST_STRING; }
1120	>	}
1121	>
1122	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1123	>	return new CheckedCallable<String>() {
1124	>	protected String realCall() {
1125	>	try {
1126	>	latch.await();
1127	>	} catch (InterruptedException quittingTime) {}
1128	>	return TEST_STRING;
1129	>	}};
1130	>	}
1131	>
1132	>	public Runnable awaiter(final CountDownLatch latch) {
1133	>	return new CheckedRunnable() {
1134	>	public void realRun() throws InterruptedException {
1135	>	await(latch);
1136	>	}};
1137	>	}
1138	>
1139	>	public void await(CountDownLatch latch) {
1140	>	try {
1141	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1142	>	} catch (Throwable fail) {
1143	>	threadUnexpectedException(fail);
1144	>	}
1145	>	}
1146	>
1147	>	public void await(Semaphore semaphore) {
1148	>	try {
1149	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1150	>	} catch (Throwable fail) {
1151	>	threadUnexpectedException(fail);
1152	>	}
1153	>	}
1154	>
1155	>	//     /**
1156	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1157	>	//      */
1158	>	//     public void await(AtomicBoolean flag) {
1159	>	//         await(flag, LONG_DELAY_MS);
1160	>	//     }
1161	>
1162	>	//     /**
1163	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1164	>	//      */
1165	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1166	>	//         long startTime = System.nanoTime();
1167	>	//         while (!flag.get()) {
1168	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1169	>	//                 throw new AssertionFailedError("timed out");
1170	>	//             Thread.yield();
1171	>	//         }
1172	>	//     }
1173	>
1174	>	public static class NPETask implements Callable<String> {
1175	>	public String call() { throw new NullPointerException(); }
1176	>	}
1177	>
1178	>	public static class CallableOne implements Callable<Integer> {
1179	>	public Integer call() { return one; }
1180	>	}
1181	>
1182	>	public class ShortRunnable extends CheckedRunnable {
1183	>	protected void realRun() throws Throwable {
1184	>	delay(SHORT_DELAY_MS);
1185	>	}
1186	>	}
1187	>
1188	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1189	>	protected void realRun() throws InterruptedException {
1190	>	delay(SHORT_DELAY_MS);
1191	>	}
1192	>	}
1193	>
1194	>	public class SmallRunnable extends CheckedRunnable {
1195	>	protected void realRun() throws Throwable {
1196	>	delay(SMALL_DELAY_MS);
1197	>	}
1198	>	}
1199	>
1200	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1201	>	protected void realRun() {
1202		try {
1203	<	Thread.sleep(MEDIUM_DELAY_MS);
1204	<	threadShouldThrow();
478	<	}
479	<	catch(InterruptedException success) {
480	<	}
1203	>	delay(SMALL_DELAY_MS);
1204	>	} catch (InterruptedException ok) {}
1205		}
1206		}
1207
1208	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1209	<	public void run() {
1208	>	public class SmallCallable extends CheckedCallable {
1209	>	protected Object realCall() throws InterruptedException {
1210	>	delay(SMALL_DELAY_MS);
1211	>	return Boolean.TRUE;
1212	>	}
1213	>	}
1214	>
1215	>	public class MediumRunnable extends CheckedRunnable {
1216	>	protected void realRun() throws Throwable {
1217	>	delay(MEDIUM_DELAY_MS);
1218	>	}
1219	>	}
1220	>
1221	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1222	>	protected void realRun() throws InterruptedException {
1223	>	delay(MEDIUM_DELAY_MS);
1224	>	}
1225	>	}
1226	>
1227	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1228	>	return new CheckedRunnable() {
1229	>	protected void realRun() {
1230	>	try {
1231	>	delay(timeoutMillis);
1232	>	} catch (InterruptedException ok) {}
1233	>	}};
1234	>	}
1235	>
1236	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1237	>	protected void realRun() {
1238		try {
1239	<	Thread.sleep(MEDIUM_DELAY_MS);
1240	<	}
489	<	catch(InterruptedException success) {
490	<	}
1239	>	delay(MEDIUM_DELAY_MS);
1240	>	} catch (InterruptedException ok) {}
1241		}
1242		}
1243
1244	<	class LongPossiblyInterruptedRunnable implements Runnable {
1245	<	public void run() {
1244	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1245	>	protected void realRun() {
1246		try {
1247	<	Thread.sleep(LONG_DELAY_MS);
1248	<	}
499	<	catch(InterruptedException success) {
500	<	}
1247	>	delay(LONG_DELAY_MS);
1248	>	} catch (InterruptedException ok) {}
1249		}
1250		}
1251
1252		/**
1253		* For use as ThreadFactory in constructors
1254		*/
1255	<	static class SimpleThreadFactory implements ThreadFactory{
1256	<	public Thread newThread(Runnable r){
1255	>	public static class SimpleThreadFactory implements ThreadFactory {
1256	>	public Thread newThread(Runnable r) {
1257		return new Thread(r);
1258	<	}
1258	>	}
1259	>	}
1260	>
1261	>	public interface TrackedRunnable extends Runnable {
1262	>	boolean isDone();
1263	>	}
1264	>
1265	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1266	>	return new TrackedRunnable() {
1267	>	private volatile boolean done = false;
1268	>	public boolean isDone() { return done; }
1269	>	public void run() {
1270	>	try {
1271	>	delay(timeoutMillis);
1272	>	done = true;
1273	>	} catch (InterruptedException ok) {}
1274	>	}
1275	>	};
1276		}
1277
1278	<	static class TrackedShortRunnable implements Runnable {
1279	<	volatile boolean done = false;
1278	>	public static class TrackedShortRunnable implements Runnable {
1279	>	public volatile boolean done = false;
1280		public void run() {
1281		try {
1282	<	Thread.sleep(SMALL_DELAY_MS);
1282	>	delay(SHORT_DELAY_MS);
1283		done = true;
1284	<	} catch(Exception e){
520	<	}
1284	>	} catch (InterruptedException ok) {}
1285		}
1286		}
1287
1288	<	static class TrackedMediumRunnable implements Runnable {
1289	<	volatile boolean done = false;
1288	>	public static class TrackedSmallRunnable implements Runnable {
1289	>	public volatile boolean done = false;
1290		public void run() {
1291		try {
1292	<	Thread.sleep(MEDIUM_DELAY_MS);
1292	>	delay(SMALL_DELAY_MS);
1293		done = true;
1294	<	} catch(Exception e){
531	<	}
1294	>	} catch (InterruptedException ok) {}
1295		}
1296		}
1297
1298	<	static class TrackedLongRunnable implements Runnable {
1299	<	volatile boolean done = false;
1298	>	public static class TrackedMediumRunnable implements Runnable {
1299	>	public volatile boolean done = false;
1300		public void run() {
1301		try {
1302	<	Thread.sleep(LONG_DELAY_MS);
1302	>	delay(MEDIUM_DELAY_MS);
1303		done = true;
1304	<	} catch(Exception e){
542	<	}
1304	>	} catch (InterruptedException ok) {}
1305		}
1306		}
1307
1308	<	static class TrackedNoOpRunnable implements Runnable {
1309	<	volatile boolean done = false;
1308	>	public static class TrackedLongRunnable implements Runnable {
1309	>	public volatile boolean done = false;
1310	>	public void run() {
1311	>	try {
1312	>	delay(LONG_DELAY_MS);
1313	>	done = true;
1314	>	} catch (InterruptedException ok) {}
1315	>	}
1316	>	}
1317	>
1318	>	public static class TrackedNoOpRunnable implements Runnable {
1319	>	public volatile boolean done = false;
1320		public void run() {
1321		done = true;
1322		}
1323		}
1324
1325	<	static class TrackedCallable implements Callable {
1326	<	volatile boolean done = false;
1325	>	public static class TrackedCallable implements Callable {
1326	>	public volatile boolean done = false;
1327		public Object call() {
1328		try {
1329	<	Thread.sleep(SMALL_DELAY_MS);
1329	>	delay(SMALL_DELAY_MS);
1330		done = true;
1331	<	} catch(Exception e){
560	<	}
1331	>	} catch (InterruptedException ok) {}
1332		return Boolean.TRUE;
1333		}
1334		}
1335
1336	+	/**
1337	+	* Analog of CheckedRunnable for RecursiveAction
1338	+	*/
1339	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1340	+	protected abstract void realCompute() throws Throwable;
1341	+
1342	+	@Override protected final void compute() {
1343	+	try {
1344	+	realCompute();
1345	+	} catch (Throwable fail) {
1346	+	threadUnexpectedException(fail);
1347	+	}
1348	+	}
1349	+	}
1350	+
1351	+	/**
1352	+	* Analog of CheckedCallable for RecursiveTask
1353	+	*/
1354	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1355	+	protected abstract T realCompute() throws Throwable;
1356	+
1357	+	@Override protected final T compute() {
1358	+	try {
1359	+	return realCompute();
1360	+	} catch (Throwable fail) {
1361	+	threadUnexpectedException(fail);
1362	+	return null;
1363	+	}
1364	+	}
1365	+	}
1366
1367		/**
1368		* For use as RejectedExecutionHandler in constructors
1369		*/
1370	<	static class NoOpREHandler implements RejectedExecutionHandler{
1371	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1370	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1371	>	public void rejectedExecution(Runnable r,
1372	>	ThreadPoolExecutor executor) {}
1373	>	}
1374	>
1375	>	/**
1376	>	* A CyclicBarrier that uses timed await and fails with
1377	>	* AssertionFailedErrors instead of throwing checked exceptions.
1378	>	*/
1379	>	public class CheckedBarrier extends CyclicBarrier {
1380	>	public CheckedBarrier(int parties) { super(parties); }
1381	>
1382	>	public int await() {
1383	>	try {
1384	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1385	>	} catch (TimeoutException timedOut) {
1386	>	throw new AssertionFailedError("timed out");
1387	>	} catch (Exception fail) {
1388	>	AssertionFailedError afe =
1389	>	new AssertionFailedError("Unexpected exception: " + fail);
1390	>	afe.initCause(fail);
1391	>	throw afe;
1392	>	}
1393	>	}
1394	>	}
1395	>
1396	>	void checkEmpty(BlockingQueue q) {
1397	>	try {
1398	>	assertTrue(q.isEmpty());
1399	>	assertEquals(0, q.size());
1400	>	assertNull(q.peek());
1401	>	assertNull(q.poll());
1402	>	assertNull(q.poll(0, MILLISECONDS));
1403	>	assertEquals(q.toString(), "[]");
1404	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1405	>	assertFalse(q.iterator().hasNext());
1406	>	try {
1407	>	q.element();
1408	>	shouldThrow();
1409	>	} catch (NoSuchElementException success) {}
1410	>	try {
1411	>	q.iterator().next();
1412	>	shouldThrow();
1413	>	} catch (NoSuchElementException success) {}
1414	>	try {
1415	>	q.remove();
1416	>	shouldThrow();
1417	>	} catch (NoSuchElementException success) {}
1418	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1419	>	}
1420	>
1421	>	void assertSerialEquals(Object x, Object y) {
1422	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1423	>	}
1424	>
1425	>	void assertNotSerialEquals(Object x, Object y) {
1426	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1427	>	}
1428	>
1429	>	byte[] serialBytes(Object o) {
1430	>	try {
1431	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1432	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1433	>	oos.writeObject(o);
1434	>	oos.flush();
1435	>	oos.close();
1436	>	return bos.toByteArray();
1437	>	} catch (Throwable fail) {
1438	>	threadUnexpectedException(fail);
1439	>	return new byte[0];
1440	>	}
1441	>	}
1442	>
1443	>	@SuppressWarnings("unchecked")
1444	>	<T> T serialClone(T o) {
1445	>	try {
1446	>	ObjectInputStream ois = new ObjectInputStream
1447	>	(new ByteArrayInputStream(serialBytes(o)));
1448	>	T clone = (T) ois.readObject();
1449	>	assertSame(o.getClass(), clone.getClass());
1450	>	return clone;
1451	>	} catch (Throwable fail) {
1452	>	threadUnexpectedException(fail);
1453	>	return null;
1454	>	}
1455	>	}
1456	>
1457	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1458	>	Runnable... throwingActions) {
1459	>	for (Runnable throwingAction : throwingActions) {
1460	>	boolean threw = false;
1461	>	try { throwingAction.run(); }
1462	>	catch (Throwable t) {
1463	>	threw = true;
1464	>	if (!expectedExceptionClass.isInstance(t)) {
1465	>	AssertionFailedError afe =
1466	>	new AssertionFailedError
1467	>	("Expected " + expectedExceptionClass.getName() +
1468	>	", got " + t.getClass().getName());
1469	>	afe.initCause(t);
1470	>	threadUnexpectedException(afe);
1471	>	}
1472	>	}
1473	>	if (!threw)
1474	>	shouldThrow(expectedExceptionClass.getName());
1475	>	}
1476	>	}
1477	>
1478	>	public void assertIteratorExhausted(Iterator<?> it) {
1479	>	try {
1480	>	it.next();
1481	>	shouldThrow();
1482	>	} catch (NoSuchElementException success) {}
1483	>	assertFalse(it.hasNext());
1484		}
572	–
573	–
1485		}

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