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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.5 by dl, Fri Sep 26 15:33:13 2003 UTC vs.
Revision 1.170 by jsr166, Thu Oct 8 22:39:57 2015 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.*;
11	<	import java.util.concurrent.*;
12	<	import java.io.*;
13	<
9	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
10	>	import static java.util.concurrent.TimeUnit.MINUTES;
11	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
12	>
13	>	import java.io.ByteArrayInputStream;
14	>	import java.io.ByteArrayOutputStream;
15	>	import java.io.ObjectInputStream;
16	>	import java.io.ObjectOutputStream;
17	>	import java.lang.management.ManagementFactory;
18	>	import java.lang.management.ThreadInfo;
19	>	import java.lang.management.ThreadMXBean;
20	>	import java.lang.reflect.Constructor;
21	>	import java.lang.reflect.Method;
22	>	import java.lang.reflect.Modifier;
23	>	import java.security.CodeSource;
24	>	import java.security.Permission;
25	>	import java.security.PermissionCollection;
26	>	import java.security.Permissions;
27	>	import java.security.Policy;
28	>	import java.security.ProtectionDomain;
29	>	import java.security.SecurityPermission;
30	>	import java.util.ArrayList;
31	>	import java.util.Arrays;
32	>	import java.util.Date;
33	>	import java.util.Enumeration;
34	>	import java.util.Iterator;
35	>	import java.util.List;
36	>	import java.util.NoSuchElementException;
37	>	import java.util.PropertyPermission;
38	>	import java.util.concurrent.BlockingQueue;
39	>	import java.util.concurrent.Callable;
40	>	import java.util.concurrent.CountDownLatch;
41	>	import java.util.concurrent.CyclicBarrier;
42	>	import java.util.concurrent.ExecutionException;
43	>	import java.util.concurrent.Executors;
44	>	import java.util.concurrent.ExecutorService;
45	>	import java.util.concurrent.ForkJoinPool;
46	>	import java.util.concurrent.Future;
47	>	import java.util.concurrent.RecursiveAction;
48	>	import java.util.concurrent.RecursiveTask;
49	>	import java.util.concurrent.RejectedExecutionHandler;
50	>	import java.util.concurrent.Semaphore;
51	>	import java.util.concurrent.ThreadFactory;
52	>	import java.util.concurrent.ThreadPoolExecutor;
53	>	import java.util.concurrent.TimeoutException;
54	>	import java.util.concurrent.atomic.AtomicReference;
55	>	import java.util.regex.Pattern;
56	>
57	>	import junit.framework.AssertionFailedError;
58	>	import junit.framework.Test;
59	>	import junit.framework.TestCase;
60	>	import junit.framework.TestResult;
61	>	import junit.framework.TestSuite;
62
63		/**
64		* Base class for JSR166 Junit TCK tests.  Defines some constants,
65		* utility methods and classes, as well as a simple framework for
66		* helping to make sure that assertions failing in generated threads
67		* cause the associated test that generated them to itself fail (which
68	<	* JUnit doe not otherwise arrange).  The rules for creating such
68	>	* JUnit does not otherwise arrange).  The rules for creating such
69		* tests are:
70		*
71		* <ol>
72		*
73	<	* <li> All assertions in code running in generated threads must use
74	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
75	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
76	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
73	>	* <li>All assertions in code running in generated threads must use
74	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
75	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
76	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
77		* particularly recommended) for other code to use these forms too.
78		* Only the most typically used JUnit assertion methods are defined
79	<	* this way, but enough to live with.</li>
79	>	* this way, but enough to live with.
80		*
81	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
82	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
81	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
82	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
83		* them. These methods are used to clear and check for thread
84	<	* assertion failures.</li>
84	>	* assertion failures.
85		*
86	<	* <li>All delays and timeouts must use one of the constants {@link
87	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
88	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
86	>	* <li>All delays and timeouts must use one of the constants {@code
87	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
88	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
89		* discriminable from zero time, and always allows enough time for the
90		* small amounts of computation (creating a thread, calling a few
91		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
92		* is always discriminable as larger than SHORT and smaller than
93		* MEDIUM.  And so on. These constants are set to conservative values,
94		* but even so, if there is ever any doubt, they can all be increased
95	<	* in one spot to rerun tests on slower platforms</li>
95	>	* in one spot to rerun tests on slower platforms.
96		*
97	<	* <li> All threads generated must be joined inside each test case
98	<	* method (or <tt>fail</tt> to do so) before returning from the
99	<	* method. The {@link joinPool} method can be used to do this when
100	<	* using Executors.</li>
97	>	* <li>All threads generated must be joined inside each test case
98	>	* method (or {@code fail} to do so) before returning from the
99	>	* method. The {@code joinPool} method can be used to do this when
100	>	* using Executors.
101		*
102		* </ol>
103	+	*
104	+	* <p><b>Other notes</b>
105	+	* <ul>
106	+	*
107	+	* <li>Usually, there is one testcase method per JSR166 method
108	+	* covering "normal" operation, and then as many exception-testing
109	+	* methods as there are exceptions the method can throw. Sometimes
110	+	* there are multiple tests per JSR166 method when the different
111	+	* "normal" behaviors differ significantly. And sometimes testcases
112	+	* cover multiple methods when they cannot be tested in
113	+	* isolation.
114	+	*
115	+	* <li>The documentation style for testcases is to provide as javadoc
116	+	* a simple sentence or two describing the property that the testcase
117	+	* method purports to test. The javadocs do not say anything about how
118	+	* the property is tested. To find out, read the code.
119	+	*
120	+	* <li>These tests are "conformance tests", and do not attempt to
121	+	* test throughput, latency, scalability or other performance factors
122	+	* (see the separate "jtreg" tests for a set intended to check these
123	+	* for the most central aspects of functionality.) So, most tests use
124	+	* the smallest sensible numbers of threads, collection sizes, etc
125	+	* needed to check basic conformance.
126	+	*
127	+	* <li>The test classes currently do not declare inclusion in
128	+	* any particular package to simplify things for people integrating
129	+	* them in TCK test suites.
130	+	*
131	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
132	+	* runs all JSR166 unit tests.
133	+	*
134	+	* </ul>
135		*/
136		public class JSR166TestCase extends TestCase {
137	+	private static final boolean useSecurityManager =
138	+	Boolean.getBoolean("jsr166.useSecurityManager");
139	+
140	+	protected static final boolean expensiveTests =
141	+	Boolean.getBoolean("jsr166.expensiveTests");
142	+
143	+	/**
144	+	* If true, also run tests that are not part of the official tck
145	+	* because they test unspecified implementation details.
146	+	*/
147	+	protected static final boolean testImplementationDetails =
148	+	Boolean.getBoolean("jsr166.testImplementationDetails");
149	+
150	+	/**
151	+	* If true, report on stdout all "slow" tests, that is, ones that
152	+	* take more than profileThreshold milliseconds to execute.
153	+	*/
154	+	private static final boolean profileTests =
155	+	Boolean.getBoolean("jsr166.profileTests");
156	+
157	+	/**
158	+	* The number of milliseconds that tests are permitted for
159	+	* execution without being reported, when profileTests is set.
160	+	*/
161	+	private static final long profileThreshold =
162	+	Long.getLong("jsr166.profileThreshold", 100);
163	+
164	+	/**
165	+	* The number of repetitions per test (for tickling rare bugs).
166	+	*/
167	+	private static final int runsPerTest =
168	+	Integer.getInteger("jsr166.runsPerTest", 1);
169	+
170	+	/**
171	+	* The number of repetitions of the test suite (for finding leaks?).
172	+	*/
173	+	private static final int suiteRuns =
174	+	Integer.getInteger("jsr166.suiteRuns", 1);
175	+
176	+	public JSR166TestCase() { super(); }
177	+	public JSR166TestCase(String name) { super(name); }
178	+
179	+	/**
180	+	* A filter for tests to run, matching strings of the form
181	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
182	+	* Usefully combined with jsr166.runsPerTest.
183	+	*/
184	+	private static final Pattern methodFilter = methodFilter();
185	+
186	+	private static Pattern methodFilter() {
187	+	String regex = System.getProperty("jsr166.methodFilter");
188	+	return (regex == null) ? null : Pattern.compile(regex);
189	+	}
190	+
191	+	// Instrumentation to debug very rare, but very annoying hung test runs.
192	+	static volatile TestCase currentTestCase;
193	+	static volatile int currentRun = 0;
194	+	static {
195	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
196	+	// avoid spurious reports with enormous runsPerTest
197	+	final int timeoutMinutes = Math.max(runsPerTest / 10, 1);
198	+	for (TestCase lastTestCase = currentTestCase;;) {
199	+	try { MINUTES.sleep(timeoutMinutes); }
200	+	catch (InterruptedException unexpected) { break; }
201	+	if (lastTestCase == currentTestCase) {
202	+	System.err.printf(
203	+	"Looks like we're stuck running test: %s (%d/%d)%n",
204	+	lastTestCase, currentRun, runsPerTest);
205	+	System.err.println
206	+	("Looks like we're stuck running test: "
207	+	+ lastTestCase + " (" + currentRun + "/" + runsPerTest + ")");
208	+	System.err.println("availableProcessors=" +
209	+	Runtime.getRuntime().availableProcessors());
210	+	dumpTestThreads();
211	+	// one stack dump is probably enough; more would be spam
212	+	break;
213	+	}
214	+	lastTestCase = currentTestCase;
215	+	}}};
216	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
217	+	thread.setDaemon(true);
218	+	thread.start();
219	+	}
220	+
221	+	public void runBare() throws Throwable {
222	+	currentTestCase = this;
223	+	if (methodFilter == null
224	+	|| methodFilter.matcher(toString()).find())
225	+	super.runBare();
226	+	}
227	+
228	+	protected void runTest() throws Throwable {
229	+	for (int i = 0; i < runsPerTest; i++) {
230	+	currentRun = i;
231	+	if (profileTests)
232	+	runTestProfiled();
233	+	else
234	+	super.runTest();
235	+	}
236	+	}
237	+
238	+	protected void runTestProfiled() throws Throwable {
239	+	for (int i = 0; i < 2; i++) {
240	+	long startTime = System.nanoTime();
241	+	super.runTest();
242	+	long elapsedMillis = millisElapsedSince(startTime);
243	+	if (elapsedMillis < profileThreshold)
244	+	break;
245	+	// Never report first run of any test; treat it as a
246	+	// warmup run, notably to trigger all needed classloading,
247	+	if (i > 0)
248	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
249	+	}
250	+	}
251	+
252	+	/**
253	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
254	+	*/
255	+	public static void main(String[] args) {
256	+	main(suite(), args);
257	+	}
258	+
259	+	/**
260	+	* Runs all unit tests in the given test suite.
261	+	* Actual behavior influenced by jsr166.* system properties.
262	+	*/
263	+	static void main(Test suite, String[] args) {
264	+	if (useSecurityManager) {
265	+	System.err.println("Setting a permissive security manager");
266	+	Policy.setPolicy(permissivePolicy());
267	+	System.setSecurityManager(new SecurityManager());
268	+	}
269	+	for (int i = 0; i < suiteRuns; i++) {
270	+	TestResult result = junit.textui.TestRunner.run(suite);
271	+	if (!result.wasSuccessful())
272	+	System.exit(1);
273	+	System.gc();
274	+	System.runFinalization();
275	+	}
276	+	}
277	+
278	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
279	+	TestSuite suite = new TestSuite();
280	+	for (Object suiteOrClass : suiteOrClasses) {
281	+	if (suiteOrClass instanceof TestSuite)
282	+	suite.addTest((TestSuite) suiteOrClass);
283	+	else if (suiteOrClass instanceof Class)
284	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
285	+	else
286	+	throw new ClassCastException("not a test suite or class");
287	+	}
288	+	return suite;
289	+	}
290	+
291	+	public static void addNamedTestClasses(TestSuite suite,
292	+	String... testClassNames) {
293	+	for (String testClassName : testClassNames) {
294	+	try {
295	+	Class<?> testClass = Class.forName(testClassName);
296	+	Method m = testClass.getDeclaredMethod("suite",
297	+	new Class<?>[0]);
298	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
299	+	} catch (Exception e) {
300	+	throw new Error("Missing test class", e);
301	+	}
302	+	}
303	+	}
304	+
305	+	public static final double JAVA_CLASS_VERSION;
306	+	public static final String JAVA_SPECIFICATION_VERSION;
307	+	static {
308	+	try {
309	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
310	+	new java.security.PrivilegedAction<Double>() {
311	+	public Double run() {
312	+	return Double.valueOf(System.getProperty("java.class.version"));}});
313	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
314	+	new java.security.PrivilegedAction<String>() {
315	+	public String run() {
316	+	return System.getProperty("java.specification.version");}});
317	+	} catch (Throwable t) {
318	+	throw new Error(t);
319	+	}
320	+	}
321	+
322	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
323	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
324	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
325	+	public static boolean atLeastJava9() {
326	+	return JAVA_CLASS_VERSION >= 53.0
327	+	// As of 2015-09, java9 still uses 52.0 class file version
328	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
329	+	}
330	+	public static boolean atLeastJava10() {
331	+	return JAVA_CLASS_VERSION >= 54.0
332	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
333	+	}
334	+
335	+	/**
336	+	* Collects all JSR166 unit tests as one suite.
337	+	*/
338	+	public static Test suite() {
339	+	// Java7+ test classes
340	+	TestSuite suite = newTestSuite(
341	+	ForkJoinPoolTest.suite(),
342	+	ForkJoinTaskTest.suite(),
343	+	RecursiveActionTest.suite(),
344	+	RecursiveTaskTest.suite(),
345	+	LinkedTransferQueueTest.suite(),
346	+	PhaserTest.suite(),
347	+	ThreadLocalRandomTest.suite(),
348	+	AbstractExecutorServiceTest.suite(),
349	+	AbstractQueueTest.suite(),
350	+	AbstractQueuedSynchronizerTest.suite(),
351	+	AbstractQueuedLongSynchronizerTest.suite(),
352	+	ArrayBlockingQueueTest.suite(),
353	+	ArrayDequeTest.suite(),
354	+	AtomicBooleanTest.suite(),
355	+	AtomicIntegerArrayTest.suite(),
356	+	AtomicIntegerFieldUpdaterTest.suite(),
357	+	AtomicIntegerTest.suite(),
358	+	AtomicLongArrayTest.suite(),
359	+	AtomicLongFieldUpdaterTest.suite(),
360	+	AtomicLongTest.suite(),
361	+	AtomicMarkableReferenceTest.suite(),
362	+	AtomicReferenceArrayTest.suite(),
363	+	AtomicReferenceFieldUpdaterTest.suite(),
364	+	AtomicReferenceTest.suite(),
365	+	AtomicStampedReferenceTest.suite(),
366	+	ConcurrentHashMapTest.suite(),
367	+	ConcurrentLinkedDequeTest.suite(),
368	+	ConcurrentLinkedQueueTest.suite(),
369	+	ConcurrentSkipListMapTest.suite(),
370	+	ConcurrentSkipListSubMapTest.suite(),
371	+	ConcurrentSkipListSetTest.suite(),
372	+	ConcurrentSkipListSubSetTest.suite(),
373	+	CopyOnWriteArrayListTest.suite(),
374	+	CopyOnWriteArraySetTest.suite(),
375	+	CountDownLatchTest.suite(),
376	+	CyclicBarrierTest.suite(),
377	+	DelayQueueTest.suite(),
378	+	EntryTest.suite(),
379	+	ExchangerTest.suite(),
380	+	ExecutorsTest.suite(),
381	+	ExecutorCompletionServiceTest.suite(),
382	+	FutureTaskTest.suite(),
383	+	LinkedBlockingDequeTest.suite(),
384	+	LinkedBlockingQueueTest.suite(),
385	+	LinkedListTest.suite(),
386	+	LockSupportTest.suite(),
387	+	PriorityBlockingQueueTest.suite(),
388	+	PriorityQueueTest.suite(),
389	+	ReentrantLockTest.suite(),
390	+	ReentrantReadWriteLockTest.suite(),
391	+	ScheduledExecutorTest.suite(),
392	+	ScheduledExecutorSubclassTest.suite(),
393	+	SemaphoreTest.suite(),
394	+	SynchronousQueueTest.suite(),
395	+	SystemTest.suite(),
396	+	ThreadLocalTest.suite(),
397	+	ThreadPoolExecutorTest.suite(),
398	+	ThreadPoolExecutorSubclassTest.suite(),
399	+	ThreadTest.suite(),
400	+	TimeUnitTest.suite(),
401	+	TreeMapTest.suite(),
402	+	TreeSetTest.suite(),
403	+	TreeSubMapTest.suite(),
404	+	TreeSubSetTest.suite());
405	+
406	+	// Java8+ test classes
407	+	if (atLeastJava8()) {
408	+	String[] java8TestClassNames = {
409	+	"Atomic8Test",
410	+	"CompletableFutureTest",
411	+	"ConcurrentHashMap8Test",
412	+	"CountedCompleterTest",
413	+	"DoubleAccumulatorTest",
414	+	"DoubleAdderTest",
415	+	"ForkJoinPool8Test",
416	+	"ForkJoinTask8Test",
417	+	"LongAccumulatorTest",
418	+	"LongAdderTest",
419	+	"SplittableRandomTest",
420	+	"StampedLockTest",
421	+	"SubmissionPublisherTest",
422	+	"ThreadLocalRandom8Test",
423	+	};
424	+	addNamedTestClasses(suite, java8TestClassNames);
425	+	}
426	+
427	+	// Java9+ test classes
428	+	if (atLeastJava9()) {
429	+	String[] java9TestClassNames = {
430	+	// Currently empty, but expecting varhandle tests
431	+	};
432	+	addNamedTestClasses(suite, java9TestClassNames);
433	+	}
434	+
435	+	return suite;
436	+	}
437	+
438	+	/** Returns list of junit-style test method names in given class. */
439	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
440	+	Method[] methods = testClass.getDeclaredMethods();
441	+	ArrayList<String> names = new ArrayList<String>(methods.length);
442	+	for (Method method : methods) {
443	+	if (method.getName().startsWith("test")
444	+	&& Modifier.isPublic(method.getModifiers())
445	+	// method.getParameterCount() requires jdk8+
446	+	&& method.getParameterTypes().length == 0) {
447	+	names.add(method.getName());
448	+	}
449	+	}
450	+	return names;
451	+	}
452	+
453	+	/**
454	+	* Returns junit-style testSuite for the given test class, but
455	+	* parameterized by passing extra data to each test.
456	+	*/
457	+	public static <ExtraData> Test parameterizedTestSuite
458	+	(Class<? extends JSR166TestCase> testClass,
459	+	Class<ExtraData> dataClass,
460	+	ExtraData data) {
461	+	try {
462	+	TestSuite suite = new TestSuite();
463	+	Constructor c =
464	+	testClass.getDeclaredConstructor(dataClass, String.class);
465	+	for (String methodName : testMethodNames(testClass))
466	+	suite.addTest((Test) c.newInstance(data, methodName));
467	+	return suite;
468	+	} catch (Exception e) {
469	+	throw new Error(e);
470	+	}
471	+	}
472	+
473	+	/**
474	+	* Returns junit-style testSuite for the jdk8 extension of the
475	+	* given test class, but parameterized by passing extra data to
476	+	* each test.  Uses reflection to allow compilation in jdk7.
477	+	*/
478	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
479	+	(Class<? extends JSR166TestCase> testClass,
480	+	Class<ExtraData> dataClass,
481	+	ExtraData data) {
482	+	if (atLeastJava8()) {
483	+	String name = testClass.getName();
484	+	String name8 = name.replaceAll("Test$", "8Test");
485	+	if (name.equals(name8)) throw new Error(name);
486	+	try {
487	+	return (Test)
488	+	Class.forName(name8)
489	+	.getMethod("testSuite", new Class[] { dataClass })
490	+	.invoke(null, data);
491	+	} catch (Exception e) {
492	+	throw new Error(e);
493	+	}
494	+	} else {
495	+	return new TestSuite();
496	+	}
497	+	}
498	+
499	+	// Delays for timing-dependent tests, in milliseconds.
500
501		public static long SHORT_DELAY_MS;
502		public static long SMALL_DELAY_MS;
503		public static long MEDIUM_DELAY_MS;
504		public static long LONG_DELAY_MS;
505
62	–
506		/**
507	<	* Return the shortest timed delay. This could
508	<	* be reimplmented to use for example a Property.
509	<	*/
507	>	* Returns the shortest timed delay. This could
508	>	* be reimplemented to use for example a Property.
509	>	*/
510		protected long getShortDelay() {
511	<	return 100;
511	>	return 50;
512		}
513
71	–
514		/**
515	<	* Set delays as multiples of SHORT_DELAY.
515	>	* Sets delays as multiples of SHORT_DELAY.
516		*/
517	<	protected  void setDelays() {
517	>	protected void setDelays() {
518		SHORT_DELAY_MS = getShortDelay();
519	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
519	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
520		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
521	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
521	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
522	>	}
523	>
524	>	/**
525	>	* Returns a timeout in milliseconds to be used in tests that
526	>	* verify that operations block or time out.
527	>	*/
528	>	long timeoutMillis() {
529	>	return SHORT_DELAY_MS / 4;
530	>	}
531	>
532	>	/**
533	>	* Returns a new Date instance representing a time at least
534	>	* delayMillis milliseconds in the future.
535	>	*/
536	>	Date delayedDate(long delayMillis) {
537	>	// Add 1 because currentTimeMillis is known to round into the past.
538	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
539		}
540
541		/**
542	<	* Flag set true if any threadAssert methods fail
542	>	* The first exception encountered if any threadAssertXXX method fails.
543		*/
544	<	volatile boolean threadFailed;
544	>	private final AtomicReference<Throwable> threadFailure
545	>	= new AtomicReference<Throwable>(null);
546
547		/**
548	<	* Initialize test to indicate that no thread assertions have failed
548	>	* Records an exception so that it can be rethrown later in the test
549	>	* harness thread, triggering a test case failure.  Only the first
550	>	* failure is recorded; subsequent calls to this method from within
551	>	* the same test have no effect.
552		*/
553	<	public void setUp() {
553	>	public void threadRecordFailure(Throwable t) {
554	>	System.err.println(t);
555	>	dumpTestThreads();
556	>	threadFailure.compareAndSet(null, t);
557	>	}
558	>
559	>	public void setUp() {
560		setDelays();
561	<	threadFailed = false;
561	>	}
562	>
563	>	void tearDownFail(String format, Object... args) {
564	>	String msg = toString() + ": " + String.format(format, args);
565	>	System.err.println(msg);
566	>	dumpTestThreads();
567	>	throw new AssertionFailedError(msg);
568		}
569
570		/**
571	<	* Trigger test case failure if any thread assertions have failed
571	>	* Extra checks that get done for all test cases.
572	>	*
573	>	* Triggers test case failure if any thread assertions have failed,
574	>	* by rethrowing, in the test harness thread, any exception recorded
575	>	* earlier by threadRecordFailure.
576	>	*
577	>	* Triggers test case failure if interrupt status is set in the main thread.
578		*/
579	<	public void tearDown() {
580	<	assertFalse(threadFailed);
579	>	public void tearDown() throws Exception {
580	>	Throwable t = threadFailure.getAndSet(null);
581	>	if (t != null) {
582	>	if (t instanceof Error)
583	>	throw (Error) t;
584	>	else if (t instanceof RuntimeException)
585	>	throw (RuntimeException) t;
586	>	else if (t instanceof Exception)
587	>	throw (Exception) t;
588	>	else {
589	>	AssertionFailedError afe =
590	>	new AssertionFailedError(t.toString());
591	>	afe.initCause(t);
592	>	throw afe;
593	>	}
594	>	}
595	>
596	>	if (Thread.interrupted())
597	>	tearDownFail("interrupt status set in main thread");
598	>
599	>	checkForkJoinPoolThreadLeaks();
600		}
601
602		/**
603	<	* Fail, also setting status to indicate current testcase should fail
604	<	*/
603	>	* Finds missing PoolCleaners
604	>	*/
605	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
606	>	Thread[] survivors = new Thread[7];
607	>	int count = Thread.enumerate(survivors);
608	>	for (int i = 0; i < count; i++) {
609	>	Thread thread = survivors[i];
610	>	String name = thread.getName();
611	>	if (name.startsWith("ForkJoinPool-")) {
612	>	// give thread some time to terminate
613	>	thread.join(LONG_DELAY_MS);
614	>	if (thread.isAlive())
615	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
616	>	thread);
617	>	}
618	>	}
619	>
620	>	if (!ForkJoinPool.commonPool()
621	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
622	>	tearDownFail("ForkJoin common pool thread stuck");
623	>	}
624	>
625	>	/**
626	>	* Just like fail(reason), but additionally recording (using
627	>	* threadRecordFailure) any AssertionFailedError thrown, so that
628	>	* the current testcase will fail.
629	>	*/
630		public void threadFail(String reason) {
631	<	threadFailed = true;
632	<	fail(reason);
631	>	try {
632	>	fail(reason);
633	>	} catch (AssertionFailedError t) {
634	>	threadRecordFailure(t);
635	>	throw t;
636	>	}
637		}
638
639		/**
640	<	* If expression not true, set status to indicate current testcase
641	<	* should fail
642	<	*/
640	>	* Just like assertTrue(b), but additionally recording (using
641	>	* threadRecordFailure) any AssertionFailedError thrown, so that
642	>	* the current testcase will fail.
643	>	*/
644		public void threadAssertTrue(boolean b) {
645	<	if (!b) {
116	<	threadFailed = true;
645	>	try {
646		assertTrue(b);
647	+	} catch (AssertionFailedError t) {
648	+	threadRecordFailure(t);
649	+	throw t;
650		}
651		}
652
653		/**
654	<	* If expression not false, set status to indicate current testcase
655	<	* should fail
656	<	*/
654	>	* Just like assertFalse(b), but additionally recording (using
655	>	* threadRecordFailure) any AssertionFailedError thrown, so that
656	>	* the current testcase will fail.
657	>	*/
658		public void threadAssertFalse(boolean b) {
659	<	if (b) {
127	<	threadFailed = true;
659	>	try {
660		assertFalse(b);
661	+	} catch (AssertionFailedError t) {
662	+	threadRecordFailure(t);
663	+	throw t;
664		}
665		}
666
667		/**
668	<	* If argument not null, set status to indicate current testcase
669	<	* should fail
670	<	*/
668	>	* Just like assertNull(x), but additionally recording (using
669	>	* threadRecordFailure) any AssertionFailedError thrown, so that
670	>	* the current testcase will fail.
671	>	*/
672		public void threadAssertNull(Object x) {
673	<	if (x != null) {
138	<	threadFailed = true;
673	>	try {
674		assertNull(x);
675	+	} catch (AssertionFailedError t) {
676	+	threadRecordFailure(t);
677	+	throw t;
678		}
679		}
680
681		/**
682	<	* If arguments not equal, set status to indicate current testcase
683	<	* should fail
684	<	*/
682	>	* Just like assertEquals(x, y), but additionally recording (using
683	>	* threadRecordFailure) any AssertionFailedError thrown, so that
684	>	* the current testcase will fail.
685	>	*/
686		public void threadAssertEquals(long x, long y) {
687	<	if (x != y) {
149	<	threadFailed = true;
687	>	try {
688		assertEquals(x, y);
689	+	} catch (AssertionFailedError t) {
690	+	threadRecordFailure(t);
691	+	throw t;
692		}
693		}
694
695		/**
696	<	* If arguments not equal, set status to indicate current testcase
697	<	* should fail
698	<	*/
696	>	* Just like assertEquals(x, y), but additionally recording (using
697	>	* threadRecordFailure) any AssertionFailedError thrown, so that
698	>	* the current testcase will fail.
699	>	*/
700		public void threadAssertEquals(Object x, Object y) {
701	<	if (x != y && (x == null || !x.equals(y))) {
160	<	threadFailed = true;
701	>	try {
702		assertEquals(x, y);
703	+	} catch (AssertionFailedError fail) {
704	+	threadRecordFailure(fail);
705	+	throw fail;
706	+	} catch (Throwable fail) {
707	+	threadUnexpectedException(fail);
708		}
709		}
710
711		/**
712	<	* threadFail with message "should throw exception"
713	<	*/
712	>	* Just like assertSame(x, y), but additionally recording (using
713	>	* threadRecordFailure) any AssertionFailedError thrown, so that
714	>	* the current testcase will fail.
715	>	*/
716	>	public void threadAssertSame(Object x, Object y) {
717	>	try {
718	>	assertSame(x, y);
719	>	} catch (AssertionFailedError fail) {
720	>	threadRecordFailure(fail);
721	>	throw fail;
722	>	}
723	>	}
724	>
725	>	/**
726	>	* Calls threadFail with message "should throw exception".
727	>	*/
728		public void threadShouldThrow() {
729	<	threadFailed = true;
730	<	fail("should throw exception");
729	>	threadFail("should throw exception");
730	>	}
731	>
732	>	/**
733	>	* Calls threadFail with message "should throw" + exceptionName.
734	>	*/
735	>	public void threadShouldThrow(String exceptionName) {
736	>	threadFail("should throw " + exceptionName);
737	>	}
738	>
739	>	/**
740	>	* Records the given exception using {@link #threadRecordFailure},
741	>	* then rethrows the exception, wrapping it in an
742	>	* AssertionFailedError if necessary.
743	>	*/
744	>	public void threadUnexpectedException(Throwable t) {
745	>	threadRecordFailure(t);
746	>	t.printStackTrace();
747	>	if (t instanceof RuntimeException)
748	>	throw (RuntimeException) t;
749	>	else if (t instanceof Error)
750	>	throw (Error) t;
751	>	else {
752	>	AssertionFailedError afe =
753	>	new AssertionFailedError("unexpected exception: " + t);
754	>	afe.initCause(t);
755	>	throw afe;
756	>	}
757	>	}
758	>
759	>	/**
760	>	* Delays, via Thread.sleep, for the given millisecond delay, but
761	>	* if the sleep is shorter than specified, may re-sleep or yield
762	>	* until time elapses.  Ensures that the given time, as measured
763	>	* by System.nanoTime(), has elapsed.
764	>	*/
765	>	static void delay(long millis) throws InterruptedException {
766	>	long nanos = millis * (1000 * 1000);
767	>	final long wakeupTime = System.nanoTime() + nanos;
768	>	do {
769	>	if (millis > 0L)
770	>	Thread.sleep(millis);
771	>	else // too short to sleep
772	>	Thread.yield();
773	>	nanos = wakeupTime - System.nanoTime();
774	>	millis = nanos / (1000 * 1000);
775	>	} while (nanos >= 0L);
776	>	}
777	>
778	>	/**
779	>	* Allows use of try-with-resources with per-test thread pools.
780	>	*/
781	>	class PoolCleaner implements AutoCloseable {
782	>	private final ExecutorService pool;
783	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
784	>	public void close() { joinPool(pool); }
785	>	}
786	>
787	>	/**
788	>	* An extension of PoolCleaner that has an action to release the pool.
789	>	*/
790	>	class PoolCleanerWithReleaser extends PoolCleaner {
791	>	private final Runnable releaser;
792	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
793	>	super(pool);
794	>	this.releaser = releaser;
795	>	}
796	>	public void close() {
797	>	try {
798	>	releaser.run();
799	>	} finally {
800	>	super.close();
801	>	}
802	>	}
803	>	}
804	>
805	>	PoolCleaner cleaner(ExecutorService pool) {
806	>	return new PoolCleaner(pool);
807	>	}
808	>
809	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
810	>	return new PoolCleanerWithReleaser(pool, releaser);
811	>	}
812	>
813	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
814	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
815	>	}
816	>
817	>	Runnable releaser(final CountDownLatch latch) {
818	>	return new Runnable() { public void run() {
819	>	do { latch.countDown(); }
820	>	while (latch.getCount() > 0);
821	>	}};
822		}
823
824		/**
825	<	* threadFail with message "Unexpected exception"
825	>	* Waits out termination of a thread pool or fails doing so.
826		*/
827	<	public void threadUnexpectedException() {
828	<	threadFailed = true;
829	<	fail("Unexpected exception");
827	>	void joinPool(ExecutorService pool) {
828	>	try {
829	>	pool.shutdown();
830	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
831	>	try {
832	>	threadFail("ExecutorService " + pool +
833	>	" did not terminate in a timely manner");
834	>	} finally {
835	>	// last resort, for the benefit of subsequent tests
836	>	pool.shutdownNow();
837	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
838	>	}
839	>	}
840	>	} catch (SecurityException ok) {
841	>	// Allowed in case test doesn't have privs
842	>	} catch (InterruptedException fail) {
843	>	threadFail("Unexpected InterruptedException");
844	>	}
845		}
846
847	+	/** Like Runnable, but with the freedom to throw anything */
848	+	interface Action { public void run() throws Throwable; }
849	+
850	+	/**
851	+	* Runs all the given actions in parallel, failing if any fail.
852	+	* Useful for running multiple variants of tests that are
853	+	* necessarily individually slow because they must block.
854	+	*/
855	+	void testInParallel(Action ... actions) {
856	+	ExecutorService pool = Executors.newCachedThreadPool();
857	+	try (PoolCleaner cleaner = cleaner(pool)) {
858	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
859	+	for (final Action action : actions)
860	+	futures.add(pool.submit(new CheckedRunnable() {
861	+	public void realRun() throws Throwable { action.run();}}));
862	+	for (Future<?> future : futures)
863	+	try {
864	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
865	+	} catch (ExecutionException ex) {
866	+	threadUnexpectedException(ex.getCause());
867	+	} catch (Exception ex) {
868	+	threadUnexpectedException(ex);
869	+	}
870	+	}
871	+	}
872
873		/**
874	<	* Wait out termination of a thread pool or fail doing so
874	>	* A debugging tool to print stack traces of most threads, as jstack does.
875	>	* Uninteresting threads are filtered out.
876		*/
877	<	public void joinPool(ExecutorService exec) {
877	>	static void dumpTestThreads() {
878	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
879	>	System.err.println("------ stacktrace dump start ------");
880	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
881	>	String name = info.getThreadName();
882	>	if ("Signal Dispatcher".equals(name))
883	>	continue;
884	>	if ("Reference Handler".equals(name)
885	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
886	>	continue;
887	>	if ("Finalizer".equals(name)
888	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
889	>	continue;
890	>	if ("checkForWedgedTest".equals(name))
891	>	continue;
892	>	System.err.print(info);
893	>	}
894	>	System.err.println("------ stacktrace dump end ------");
895	>	}
896	>
897	>	/**
898	>	* Checks that thread does not terminate within the default
899	>	* millisecond delay of {@code timeoutMillis()}.
900	>	*/
901	>	void assertThreadStaysAlive(Thread thread) {
902	>	assertThreadStaysAlive(thread, timeoutMillis());
903	>	}
904	>
905	>	/**
906	>	* Checks that thread does not terminate within the given millisecond delay.
907	>	*/
908	>	void assertThreadStaysAlive(Thread thread, long millis) {
909		try {
910	<	exec.shutdown();
911	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
912	<	} catch(InterruptedException ie) {
913	<	fail("Unexpected exception");
910	>	// No need to optimize the failing case via Thread.join.
911	>	delay(millis);
912	>	assertTrue(thread.isAlive());
913	>	} catch (InterruptedException fail) {
914	>	threadFail("Unexpected InterruptedException");
915		}
916		}
917
918	+	/**
919	+	* Checks that the threads do not terminate within the default
920	+	* millisecond delay of {@code timeoutMillis()}.
921	+	*/
922	+	void assertThreadsStayAlive(Thread... threads) {
923	+	assertThreadsStayAlive(timeoutMillis(), threads);
924	+	}
925
926		/**
927	<	* fail with message "should throw exception"
928	<	*/
927	>	* Checks that the threads do not terminate within the given millisecond delay.
928	>	*/
929	>	void assertThreadsStayAlive(long millis, Thread... threads) {
930	>	try {
931	>	// No need to optimize the failing case via Thread.join.
932	>	delay(millis);
933	>	for (Thread thread : threads)
934	>	assertTrue(thread.isAlive());
935	>	} catch (InterruptedException fail) {
936	>	threadFail("Unexpected InterruptedException");
937	>	}
938	>	}
939	>
940	>	/**
941	>	* Checks that future.get times out, with the default timeout of
942	>	* {@code timeoutMillis()}.
943	>	*/
944	>	void assertFutureTimesOut(Future future) {
945	>	assertFutureTimesOut(future, timeoutMillis());
946	>	}
947	>
948	>	/**
949	>	* Checks that future.get times out, with the given millisecond timeout.
950	>	*/
951	>	void assertFutureTimesOut(Future future, long timeoutMillis) {
952	>	long startTime = System.nanoTime();
953	>	try {
954	>	future.get(timeoutMillis, MILLISECONDS);
955	>	shouldThrow();
956	>	} catch (TimeoutException success) {
957	>	} catch (Exception fail) {
958	>	threadUnexpectedException(fail);
959	>	} finally { future.cancel(true); }
960	>	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
961	>	}
962	>
963	>	/**
964	>	* Fails with message "should throw exception".
965	>	*/
966		public void shouldThrow() {
967		fail("Should throw exception");
968		}
969
970		/**
971	<	* fail with message "Unexpected exception"
971	>	* Fails with message "should throw " + exceptionName.
972		*/
973	<	public void unexpectedException() {
974	<	fail("Unexpected exception");
973	>	public void shouldThrow(String exceptionName) {
974	>	fail("Should throw " + exceptionName);
975		}
976
209	–
977		/**
978		* The number of elements to place in collections, arrays, etc.
979		*/
980	<	static final int SIZE = 20;
980	>	public static final int SIZE = 20;
981
982		// Some convenient Integer constants
983
984	<	static final Integer zero = new Integer(0);
985	<	static final Integer one = new Integer(1);
986	<	static final Integer two = new Integer(2);
987	<	static final Integer three  = new Integer(3);
988	<	static final Integer four  = new Integer(4);
989	<	static final Integer five  = new Integer(5);
990	<	static final Integer six = new Integer(6);
991	<	static final Integer seven = new Integer(7);
992	<	static final Integer eight = new Integer(8);
993	<	static final Integer nine = new Integer(9);
994	<	static final Integer m1  = new Integer(-1);
995	<	static final Integer m2  = new Integer(-2);
996	<	static final Integer m3  = new Integer(-3);
997	<	static final Integer m4 = new Integer(-4);
998	<	static final Integer m5 = new Integer(-5);
999	<	static final Integer m10 = new Integer(-10);
984	>	public static final Integer zero  = new Integer(0);
985	>	public static final Integer one   = new Integer(1);
986	>	public static final Integer two   = new Integer(2);
987	>	public static final Integer three = new Integer(3);
988	>	public static final Integer four  = new Integer(4);
989	>	public static final Integer five  = new Integer(5);
990	>	public static final Integer six   = new Integer(6);
991	>	public static final Integer seven = new Integer(7);
992	>	public static final Integer eight = new Integer(8);
993	>	public static final Integer nine  = new Integer(9);
994	>	public static final Integer m1  = new Integer(-1);
995	>	public static final Integer m2  = new Integer(-2);
996	>	public static final Integer m3  = new Integer(-3);
997	>	public static final Integer m4  = new Integer(-4);
998	>	public static final Integer m5  = new Integer(-5);
999	>	public static final Integer m6  = new Integer(-6);
1000	>	public static final Integer m10 = new Integer(-10);
1001
1002	+	/**
1003	+	* Runs Runnable r with a security policy that permits precisely
1004	+	* the specified permissions.  If there is no current security
1005	+	* manager, the runnable is run twice, both with and without a
1006	+	* security manager.  We require that any security manager permit
1007	+	* getPolicy/setPolicy.
1008	+	*/
1009	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1010	+	SecurityManager sm = System.getSecurityManager();
1011	+	if (sm == null) {
1012	+	r.run();
1013	+	}
1014	+	runWithSecurityManagerWithPermissions(r, permissions);
1015	+	}
1016
1017	<	// Some convenient Runnable classes
1017	>	/**
1018	>	* Runs Runnable r with a security policy that permits precisely
1019	>	* the specified permissions.  If there is no current security
1020	>	* manager, a temporary one is set for the duration of the
1021	>	* Runnable.  We require that any security manager permit
1022	>	* getPolicy/setPolicy.
1023	>	*/
1024	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1025	>	Permission... permissions) {
1026	>	SecurityManager sm = System.getSecurityManager();
1027	>	if (sm == null) {
1028	>	Policy savedPolicy = Policy.getPolicy();
1029	>	try {
1030	>	Policy.setPolicy(permissivePolicy());
1031	>	System.setSecurityManager(new SecurityManager());
1032	>	runWithSecurityManagerWithPermissions(r, permissions);
1033	>	} finally {
1034	>	System.setSecurityManager(null);
1035	>	Policy.setPolicy(savedPolicy);
1036	>	}
1037	>	} else {
1038	>	Policy savedPolicy = Policy.getPolicy();
1039	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1040	>	Policy.setPolicy(policy);
1041
1042	<	static class NoOpRunnable implements Runnable {
1043	<	public void run() {}
1042	>	try {
1043	>	r.run();
1044	>	} finally {
1045	>	policy.addPermission(new SecurityPermission("setPolicy"));
1046	>	Policy.setPolicy(savedPolicy);
1047	>	}
1048	>	}
1049		}
1050
1051	<	static class NoOpCallable implements Callable {
1052	<	public Object call() { return Boolean.TRUE; }
1051	>	/**
1052	>	* Runs a runnable without any permissions.
1053	>	*/
1054	>	public void runWithoutPermissions(Runnable r) {
1055	>	runWithPermissions(r);
1056		}
1057
1058	<	class ShortRunnable implements Runnable {
1059	<	public void run() {
1060	<	try {
1061	<	Thread.sleep(SHORT_DELAY_MS);
1058	>	/**
1059	>	* A security policy where new permissions can be dynamically added
1060	>	* or all cleared.
1061	>	*/
1062	>	public static class AdjustablePolicy extends java.security.Policy {
1063	>	Permissions perms = new Permissions();
1064	>	AdjustablePolicy(Permission... permissions) {
1065	>	for (Permission permission : permissions)
1066	>	perms.add(permission);
1067	>	}
1068	>	void addPermission(Permission perm) { perms.add(perm); }
1069	>	void clearPermissions() { perms = new Permissions(); }
1070	>	public PermissionCollection getPermissions(CodeSource cs) {
1071	>	return perms;
1072	>	}
1073	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1074	>	return perms;
1075	>	}
1076	>	public boolean implies(ProtectionDomain pd, Permission p) {
1077	>	return perms.implies(p);
1078	>	}
1079	>	public void refresh() {}
1080	>	public String toString() {
1081	>	List<Permission> ps = new ArrayList<Permission>();
1082	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1083	>	ps.add(e.nextElement());
1084	>	return "AdjustablePolicy with permissions " + ps;
1085	>	}
1086	>	}
1087	>
1088	>	/**
1089	>	* Returns a policy containing all the permissions we ever need.
1090	>	*/
1091	>	public static Policy permissivePolicy() {
1092	>	return new AdjustablePolicy
1093	>	// Permissions j.u.c. needs directly
1094	>	(new RuntimePermission("modifyThread"),
1095	>	new RuntimePermission("getClassLoader"),
1096	>	new RuntimePermission("setContextClassLoader"),
1097	>	// Permissions needed to change permissions!
1098	>	new SecurityPermission("getPolicy"),
1099	>	new SecurityPermission("setPolicy"),
1100	>	new RuntimePermission("setSecurityManager"),
1101	>	// Permissions needed by the junit test harness
1102	>	new RuntimePermission("accessDeclaredMembers"),
1103	>	new PropertyPermission("*", "read"),
1104	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1105	>	}
1106	>
1107	>	/**
1108	>	* Sleeps until the given time has elapsed.
1109	>	* Throws AssertionFailedError if interrupted.
1110	>	*/
1111	>	void sleep(long millis) {
1112	>	try {
1113	>	delay(millis);
1114	>	} catch (InterruptedException fail) {
1115	>	AssertionFailedError afe =
1116	>	new AssertionFailedError("Unexpected InterruptedException");
1117	>	afe.initCause(fail);
1118	>	throw afe;
1119	>	}
1120	>	}
1121	>
1122	>	/**
1123	>	* Spin-waits up to the specified number of milliseconds for the given
1124	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1125	>	*/
1126	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1127	>	long startTime = System.nanoTime();
1128	>	for (;;) {
1129	>	Thread.State s = thread.getState();
1130	>	if (s == Thread.State.BLOCKED ||
1131	>	s == Thread.State.WAITING ||
1132	>	s == Thread.State.TIMED_WAITING)
1133	>	return;
1134	>	else if (s == Thread.State.TERMINATED)
1135	>	fail("Unexpected thread termination");
1136	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1137	>	threadAssertTrue(thread.isAlive());
1138	>	return;
1139		}
1140	<	catch(Exception e) {
1141	<	threadUnexpectedException();
1140	>	Thread.yield();
1141	>	}
1142	>	}
1143	>
1144	>	/**
1145	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1146	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1147	>	*/
1148	>	void waitForThreadToEnterWaitState(Thread thread) {
1149	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1150	>	}
1151	>
1152	>	/**
1153	>	* Returns the number of milliseconds since time given by
1154	>	* startNanoTime, which must have been previously returned from a
1155	>	* call to {@link System#nanoTime()}.
1156	>	*/
1157	>	static long millisElapsedSince(long startNanoTime) {
1158	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1159	>	}
1160	>
1161	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1162	>	//         long startTime = System.nanoTime();
1163	>	//         try {
1164	>	//             r.run();
1165	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1166	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1167	>	//             throw new AssertionFailedError("did not return promptly");
1168	>	//     }
1169	>
1170	>	//     void assertTerminatesPromptly(Runnable r) {
1171	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1172	>	//     }
1173	>
1174	>	/**
1175	>	* Checks that timed f.get() returns the expected value, and does not
1176	>	* wait for the timeout to elapse before returning.
1177	>	*/
1178	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1179	>	long startTime = System.nanoTime();
1180	>	try {
1181	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1182	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1183	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1184	>	throw new AssertionFailedError("timed get did not return promptly");
1185	>	}
1186	>
1187	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1188	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1189	>	}
1190	>
1191	>	/**
1192	>	* Returns a new started daemon Thread running the given runnable.
1193	>	*/
1194	>	Thread newStartedThread(Runnable runnable) {
1195	>	Thread t = new Thread(runnable);
1196	>	t.setDaemon(true);
1197	>	t.start();
1198	>	return t;
1199	>	}
1200	>
1201	>	/**
1202	>	* Waits for the specified time (in milliseconds) for the thread
1203	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1204	>	* the thread (in the hope that it may terminate later) and fails.
1205	>	*/
1206	>	void awaitTermination(Thread t, long timeoutMillis) {
1207	>	try {
1208	>	t.join(timeoutMillis);
1209	>	} catch (InterruptedException fail) {
1210	>	threadUnexpectedException(fail);
1211	>	} finally {
1212	>	if (t.getState() != Thread.State.TERMINATED) {
1213	>	t.interrupt();
1214	>	threadFail("Test timed out");
1215		}
1216		}
1217		}
1218
1219	<	class ShortInterruptedRunnable implements Runnable {
1220	<	public void run() {
1219	>	/**
1220	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1221	>	* terminate (using {@link Thread#join(long)}), else interrupts
1222	>	* the thread (in the hope that it may terminate later) and fails.
1223	>	*/
1224	>	void awaitTermination(Thread t) {
1225	>	awaitTermination(t, LONG_DELAY_MS);
1226	>	}
1227	>
1228	>	// Some convenient Runnable classes
1229	>
1230	>	public abstract class CheckedRunnable implements Runnable {
1231	>	protected abstract void realRun() throws Throwable;
1232	>
1233	>	public final void run() {
1234		try {
1235	<	Thread.sleep(SHORT_DELAY_MS);
1236	<	threadShouldThrow();
1237	<	}
262	<	catch(InterruptedException success) {
1235	>	realRun();
1236	>	} catch (Throwable fail) {
1237	>	threadUnexpectedException(fail);
1238		}
1239		}
1240		}
1241
1242	<	class SmallRunnable implements Runnable {
1243	<	public void run() {
1242	>	public abstract class RunnableShouldThrow implements Runnable {
1243	>	protected abstract void realRun() throws Throwable;
1244	>
1245	>	final Class<?> exceptionClass;
1246	>
1247	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1248	>	this.exceptionClass = exceptionClass;
1249	>	}
1250	>
1251	>	public final void run() {
1252		try {
1253	<	Thread.sleep(SMALL_DELAY_MS);
1254	<	}
1255	<	catch(Exception e) {
1256	<	threadUnexpectedException();
1253	>	realRun();
1254	>	threadShouldThrow(exceptionClass.getSimpleName());
1255	>	} catch (Throwable t) {
1256	>	if (! exceptionClass.isInstance(t))
1257	>	threadUnexpectedException(t);
1258		}
1259		}
1260		}
1261
1262	<	class SmallCallable implements Callable {
1263	<	public Object call() {
1262	>	public abstract class ThreadShouldThrow extends Thread {
1263	>	protected abstract void realRun() throws Throwable;
1264	>
1265	>	final Class<?> exceptionClass;
1266	>
1267	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1268	>	this.exceptionClass = exceptionClass;
1269	>	}
1270	>
1271	>	public final void run() {
1272		try {
1273	<	Thread.sleep(SMALL_DELAY_MS);
1274	<	}
1275	<	catch(Exception e) {
1276	<	threadUnexpectedException();
1273	>	realRun();
1274	>	threadShouldThrow(exceptionClass.getSimpleName());
1275	>	} catch (Throwable t) {
1276	>	if (! exceptionClass.isInstance(t))
1277	>	threadUnexpectedException(t);
1278		}
286	–	return Boolean.TRUE;
1279		}
1280		}
1281
1282	<	class SmallInterruptedRunnable implements Runnable {
1283	<	public void run() {
1282	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1283	>	protected abstract void realRun() throws Throwable;
1284	>
1285	>	public final void run() {
1286		try {
1287	<	Thread.sleep(SMALL_DELAY_MS);
1288	<	threadShouldThrow();
1289	<	}
1290	<	catch(InterruptedException success) {
1287	>	realRun();
1288	>	threadShouldThrow("InterruptedException");
1289	>	} catch (InterruptedException success) {
1290	>	threadAssertFalse(Thread.interrupted());
1291	>	} catch (Throwable fail) {
1292	>	threadUnexpectedException(fail);
1293		}
1294		}
1295		}
1296
1297	+	public abstract class CheckedCallable<T> implements Callable<T> {
1298	+	protected abstract T realCall() throws Throwable;
1299
1300	<	class MediumRunnable implements Runnable {
303	<	public void run() {
1300	>	public final T call() {
1301		try {
1302	<	Thread.sleep(MEDIUM_DELAY_MS);
1303	<	}
1304	<	catch(Exception e) {
1305	<	threadUnexpectedException();
1302	>	return realCall();
1303	>	} catch (Throwable fail) {
1304	>	threadUnexpectedException(fail);
1305	>	return null;
1306		}
1307		}
1308		}
1309
1310	<	class MediumInterruptedRunnable implements Runnable {
1311	<	public void run() {
1310	>	public abstract class CheckedInterruptedCallable<T>
1311	>	implements Callable<T> {
1312	>	protected abstract T realCall() throws Throwable;
1313	>
1314	>	public final T call() {
1315		try {
1316	<	Thread.sleep(MEDIUM_DELAY_MS);
1317	<	threadShouldThrow();
1318	<	}
1319	<	catch(InterruptedException success) {
1316	>	T result = realCall();
1317	>	threadShouldThrow("InterruptedException");
1318	>	return result;
1319	>	} catch (InterruptedException success) {
1320	>	threadAssertFalse(Thread.interrupted());
1321	>	} catch (Throwable fail) {
1322	>	threadUnexpectedException(fail);
1323		}
1324	+	return null;
1325		}
1326		}
1327
1328	<	class MediumPossiblyInterruptedRunnable implements Runnable {
1329	<	public void run() {
1328	>	public static class NoOpRunnable implements Runnable {
1329	>	public void run() {}
1330	>	}
1331	>
1332	>	public static class NoOpCallable implements Callable {
1333	>	public Object call() { return Boolean.TRUE; }
1334	>	}
1335	>
1336	>	public static final String TEST_STRING = "a test string";
1337	>
1338	>	public static class StringTask implements Callable<String> {
1339	>	final String value;
1340	>	public StringTask() { this(TEST_STRING); }
1341	>	public StringTask(String value) { this.value = value; }
1342	>	public String call() { return value; }
1343	>	}
1344	>
1345	>	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1346	>	return new CheckedCallable<String>() {
1347	>	protected String realCall() {
1348	>	try {
1349	>	latch.await();
1350	>	} catch (InterruptedException quittingTime) {}
1351	>	return TEST_STRING;
1352	>	}};
1353	>	}
1354	>
1355	>	public Runnable countDowner(final CountDownLatch latch) {
1356	>	return new CheckedRunnable() {
1357	>	public void realRun() throws InterruptedException {
1358	>	latch.countDown();
1359	>	}};
1360	>	}
1361	>
1362	>	class LatchAwaiter extends CheckedRunnable {
1363	>	static final int NEW = 0;
1364	>	static final int RUNNING = 1;
1365	>	static final int DONE = 2;
1366	>	final CountDownLatch latch;
1367	>	int state = NEW;
1368	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1369	>	public void realRun() throws InterruptedException {
1370	>	state = 1;
1371	>	await(latch);
1372	>	state = 2;
1373	>	}
1374	>	}
1375	>
1376	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1377	>	return new LatchAwaiter(latch);
1378	>	}
1379	>
1380	>	public void await(CountDownLatch latch) {
1381	>	try {
1382	>	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1383	>	} catch (Throwable fail) {
1384	>	threadUnexpectedException(fail);
1385	>	}
1386	>	}
1387	>
1388	>	public void await(Semaphore semaphore) {
1389	>	try {
1390	>	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1391	>	} catch (Throwable fail) {
1392	>	threadUnexpectedException(fail);
1393	>	}
1394	>	}
1395	>
1396	>	//     /**
1397	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1398	>	//      */
1399	>	//     public void await(AtomicBoolean flag) {
1400	>	//         await(flag, LONG_DELAY_MS);
1401	>	//     }
1402	>
1403	>	//     /**
1404	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1405	>	//      */
1406	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1407	>	//         long startTime = System.nanoTime();
1408	>	//         while (!flag.get()) {
1409	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1410	>	//                 throw new AssertionFailedError("timed out");
1411	>	//             Thread.yield();
1412	>	//         }
1413	>	//     }
1414	>
1415	>	public static class NPETask implements Callable<String> {
1416	>	public String call() { throw new NullPointerException(); }
1417	>	}
1418	>
1419	>	public static class CallableOne implements Callable<Integer> {
1420	>	public Integer call() { return one; }
1421	>	}
1422	>
1423	>	public class ShortRunnable extends CheckedRunnable {
1424	>	protected void realRun() throws Throwable {
1425	>	delay(SHORT_DELAY_MS);
1426	>	}
1427	>	}
1428	>
1429	>	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1430	>	protected void realRun() throws InterruptedException {
1431	>	delay(SHORT_DELAY_MS);
1432	>	}
1433	>	}
1434	>
1435	>	public class SmallRunnable extends CheckedRunnable {
1436	>	protected void realRun() throws Throwable {
1437	>	delay(SMALL_DELAY_MS);
1438	>	}
1439	>	}
1440	>
1441	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1442	>	protected void realRun() {
1443		try {
1444	<	Thread.sleep(MEDIUM_DELAY_MS);
1445	<	}
1446	<	catch(InterruptedException success) {
1447	<	}
1444	>	delay(SMALL_DELAY_MS);
1445	>	} catch (InterruptedException ok) {}
1446	>	}
1447	>	}
1448	>
1449	>	public class SmallCallable extends CheckedCallable {
1450	>	protected Object realCall() throws InterruptedException {
1451	>	delay(SMALL_DELAY_MS);
1452	>	return Boolean.TRUE;
1453	>	}
1454	>	}
1455	>
1456	>	public class MediumRunnable extends CheckedRunnable {
1457	>	protected void realRun() throws Throwable {
1458	>	delay(MEDIUM_DELAY_MS);
1459	>	}
1460	>	}
1461	>
1462	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1463	>	protected void realRun() throws InterruptedException {
1464	>	delay(MEDIUM_DELAY_MS);
1465	>	}
1466	>	}
1467	>
1468	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1469	>	return new CheckedRunnable() {
1470	>	protected void realRun() {
1471	>	try {
1472	>	delay(timeoutMillis);
1473	>	} catch (InterruptedException ok) {}
1474	>	}};
1475	>	}
1476	>
1477	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1478	>	protected void realRun() {
1479	>	try {
1480	>	delay(MEDIUM_DELAY_MS);
1481	>	} catch (InterruptedException ok) {}
1482	>	}
1483	>	}
1484	>
1485	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1486	>	protected void realRun() {
1487	>	try {
1488	>	delay(LONG_DELAY_MS);
1489	>	} catch (InterruptedException ok) {}
1490		}
1491		}
1492
1493		/**
1494		* For use as ThreadFactory in constructors
1495		*/
1496	<	static class SimpleThreadFactory implements ThreadFactory{
1497	<	public Thread newThread(Runnable r){
1496	>	public static class SimpleThreadFactory implements ThreadFactory {
1497	>	public Thread newThread(Runnable r) {
1498		return new Thread(r);
1499	<	}
1499	>	}
1500	>	}
1501	>
1502	>	public interface TrackedRunnable extends Runnable {
1503	>	boolean isDone();
1504		}
1505
1506	<	static class TrackedRunnable implements Runnable {
1507	<	volatile boolean done = false;
1506	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1507	>	return new TrackedRunnable() {
1508	>	private volatile boolean done = false;
1509	>	public boolean isDone() { return done; }
1510	>	public void run() {
1511	>	try {
1512	>	delay(timeoutMillis);
1513	>	done = true;
1514	>	} catch (InterruptedException ok) {}
1515	>	}
1516	>	};
1517	>	}
1518	>
1519	>	public static class TrackedShortRunnable implements Runnable {
1520	>	public volatile boolean done = false;
1521		public void run() {
1522		try {
1523	<	Thread.sleep(SMALL_DELAY_MS);
1523	>	delay(SHORT_DELAY_MS);
1524		done = true;
1525	<	} catch(Exception e){
1526	<	}
1525	>	} catch (InterruptedException ok) {}
1526	>	}
1527	>	}
1528	>
1529	>	public static class TrackedSmallRunnable implements Runnable {
1530	>	public volatile boolean done = false;
1531	>	public void run() {
1532	>	try {
1533	>	delay(SMALL_DELAY_MS);
1534	>	done = true;
1535	>	} catch (InterruptedException ok) {}
1536	>	}
1537	>	}
1538	>
1539	>	public static class TrackedMediumRunnable implements Runnable {
1540	>	public volatile boolean done = false;
1541	>	public void run() {
1542	>	try {
1543	>	delay(MEDIUM_DELAY_MS);
1544	>	done = true;
1545	>	} catch (InterruptedException ok) {}
1546	>	}
1547	>	}
1548	>
1549	>	public static class TrackedLongRunnable implements Runnable {
1550	>	public volatile boolean done = false;
1551	>	public void run() {
1552	>	try {
1553	>	delay(LONG_DELAY_MS);
1554	>	done = true;
1555	>	} catch (InterruptedException ok) {}
1556	>	}
1557	>	}
1558	>
1559	>	public static class TrackedNoOpRunnable implements Runnable {
1560	>	public volatile boolean done = false;
1561	>	public void run() {
1562	>	done = true;
1563		}
1564		}
1565
1566	<	static class TrackedCallable implements Callable {
1567	<	volatile boolean done = false;
1566	>	public static class TrackedCallable implements Callable {
1567	>	public volatile boolean done = false;
1568		public Object call() {
1569		try {
1570	<	Thread.sleep(SMALL_DELAY_MS);
1570	>	delay(SMALL_DELAY_MS);
1571		done = true;
1572	<	} catch(Exception e){
361	<	}
1572	>	} catch (InterruptedException ok) {}
1573		return Boolean.TRUE;
1574		}
1575		}
1576
1577		/**
1578	+	* Analog of CheckedRunnable for RecursiveAction
1579	+	*/
1580	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1581	+	protected abstract void realCompute() throws Throwable;
1582	+
1583	+	@Override protected final void compute() {
1584	+	try {
1585	+	realCompute();
1586	+	} catch (Throwable fail) {
1587	+	threadUnexpectedException(fail);
1588	+	}
1589	+	}
1590	+	}
1591	+
1592	+	/**
1593	+	* Analog of CheckedCallable for RecursiveTask
1594	+	*/
1595	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1596	+	protected abstract T realCompute() throws Throwable;
1597	+
1598	+	@Override protected final T compute() {
1599	+	try {
1600	+	return realCompute();
1601	+	} catch (Throwable fail) {
1602	+	threadUnexpectedException(fail);
1603	+	return null;
1604	+	}
1605	+	}
1606	+	}
1607	+
1608	+	/**
1609		* For use as RejectedExecutionHandler in constructors
1610		*/
1611	<	static class NoOpREHandler implements RejectedExecutionHandler{
1612	<	public void rejectedExecution(Runnable r, ThreadPoolExecutor executor){}
1611	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1612	>	public void rejectedExecution(Runnable r,
1613	>	ThreadPoolExecutor executor) {}
1614	>	}
1615	>
1616	>	/**
1617	>	* A CyclicBarrier that uses timed await and fails with
1618	>	* AssertionFailedErrors instead of throwing checked exceptions.
1619	>	*/
1620	>	public class CheckedBarrier extends CyclicBarrier {
1621	>	public CheckedBarrier(int parties) { super(parties); }
1622	>
1623	>	public int await() {
1624	>	try {
1625	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1626	>	} catch (TimeoutException timedOut) {
1627	>	throw new AssertionFailedError("timed out");
1628	>	} catch (Exception fail) {
1629	>	AssertionFailedError afe =
1630	>	new AssertionFailedError("Unexpected exception: " + fail);
1631	>	afe.initCause(fail);
1632	>	throw afe;
1633	>	}
1634	>	}
1635	>	}
1636	>
1637	>	void checkEmpty(BlockingQueue q) {
1638	>	try {
1639	>	assertTrue(q.isEmpty());
1640	>	assertEquals(0, q.size());
1641	>	assertNull(q.peek());
1642	>	assertNull(q.poll());
1643	>	assertNull(q.poll(0, MILLISECONDS));
1644	>	assertEquals(q.toString(), "[]");
1645	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1646	>	assertFalse(q.iterator().hasNext());
1647	>	try {
1648	>	q.element();
1649	>	shouldThrow();
1650	>	} catch (NoSuchElementException success) {}
1651	>	try {
1652	>	q.iterator().next();
1653	>	shouldThrow();
1654	>	} catch (NoSuchElementException success) {}
1655	>	try {
1656	>	q.remove();
1657	>	shouldThrow();
1658	>	} catch (NoSuchElementException success) {}
1659	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1660	>	}
1661	>
1662	>	void assertSerialEquals(Object x, Object y) {
1663	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1664	>	}
1665	>
1666	>	void assertNotSerialEquals(Object x, Object y) {
1667	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1668	>	}
1669	>
1670	>	byte[] serialBytes(Object o) {
1671	>	try {
1672	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1673	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1674	>	oos.writeObject(o);
1675	>	oos.flush();
1676	>	oos.close();
1677	>	return bos.toByteArray();
1678	>	} catch (Throwable fail) {
1679	>	threadUnexpectedException(fail);
1680	>	return new byte[0];
1681	>	}
1682	>	}
1683	>
1684	>	@SuppressWarnings("unchecked")
1685	>	<T> T serialClone(T o) {
1686	>	try {
1687	>	ObjectInputStream ois = new ObjectInputStream
1688	>	(new ByteArrayInputStream(serialBytes(o)));
1689	>	T clone = (T) ois.readObject();
1690	>	assertSame(o.getClass(), clone.getClass());
1691	>	return clone;
1692	>	} catch (Throwable fail) {
1693	>	threadUnexpectedException(fail);
1694	>	return null;
1695	>	}
1696	>	}
1697	>
1698	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1699	>	Runnable... throwingActions) {
1700	>	for (Runnable throwingAction : throwingActions) {
1701	>	boolean threw = false;
1702	>	try { throwingAction.run(); }
1703	>	catch (Throwable t) {
1704	>	threw = true;
1705	>	if (!expectedExceptionClass.isInstance(t)) {
1706	>	AssertionFailedError afe =
1707	>	new AssertionFailedError
1708	>	("Expected " + expectedExceptionClass.getName() +
1709	>	", got " + t.getClass().getName());
1710	>	afe.initCause(t);
1711	>	threadUnexpectedException(afe);
1712	>	}
1713	>	}
1714	>	if (!threw)
1715	>	shouldThrow(expectedExceptionClass.getName());
1716	>	}
1717	>	}
1718	>
1719	>	public void assertIteratorExhausted(Iterator<?> it) {
1720	>	try {
1721	>	it.next();
1722	>	shouldThrow();
1723	>	} catch (NoSuchElementException success) {}
1724	>	assertFalse(it.hasNext());
1725		}
372	–
373	–
1726		}

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