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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.2 by dl, Sat Sep 20 00:31:57 2003 UTC vs.
Revision 1.180 by jsr166, Mon Nov 9 05:43:39 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.nio.file.Files;
24	>	import java.nio.file.Paths;
25	>	import java.security.CodeSource;
26	>	import java.security.Permission;
27	>	import java.security.PermissionCollection;
28	>	import java.security.Permissions;
29	>	import java.security.Policy;
30	>	import java.security.ProtectionDomain;
31	>	import java.security.SecurityPermission;
32	>	import java.util.ArrayList;
33	>	import java.util.Arrays;
34	>	import java.util.Date;
35	>	import java.util.Enumeration;
36	>	import java.util.Iterator;
37	>	import java.util.List;
38	>	import java.util.NoSuchElementException;
39	>	import java.util.PropertyPermission;
40	>	import java.util.concurrent.BlockingQueue;
41	>	import java.util.concurrent.Callable;
42	>	import java.util.concurrent.CountDownLatch;
43	>	import java.util.concurrent.CyclicBarrier;
44	>	import java.util.concurrent.ExecutionException;
45	>	import java.util.concurrent.Executors;
46	>	import java.util.concurrent.ExecutorService;
47	>	import java.util.concurrent.ForkJoinPool;
48	>	import java.util.concurrent.Future;
49	>	import java.util.concurrent.RecursiveAction;
50	>	import java.util.concurrent.RecursiveTask;
51	>	import java.util.concurrent.RejectedExecutionHandler;
52	>	import java.util.concurrent.Semaphore;
53	>	import java.util.concurrent.ThreadFactory;
54	>	import java.util.concurrent.ThreadPoolExecutor;
55	>	import java.util.concurrent.TimeoutException;
56	>	import java.util.concurrent.atomic.AtomicReference;
57	>	import java.util.regex.Matcher;
58	>	import java.util.regex.Pattern;
59	>
60	>	import junit.framework.AssertionFailedError;
61	>	import junit.framework.Test;
62	>	import junit.framework.TestCase;
63	>	import junit.framework.TestResult;
64	>	import junit.framework.TestSuite;
65
66		/**
67	<	* Base class for JSR166 Junit TCK tests.  Defines some constants and
68	<	* utility methods, as well as a simple framework for helping to make
69	<	* sure that assertions failing in generated threads cause the
70	<	* associated test that generated them to itself fail (which JUnit doe
71	<	* not otherwise arrange).  The rules for creating such tests are:
67	>	* Base class for JSR166 Junit TCK tests.  Defines some constants,
68	>	* utility methods and classes, as well as a simple framework for
69	>	* helping to make sure that assertions failing in generated threads
70	>	* cause the associated test that generated them to itself fail (which
71	>	* JUnit does not otherwise arrange).  The rules for creating such
72	>	* tests are:
73		*
74		* <ol>
75		*
76	<	* <li> All assertions in code running in generated threads must use
77	<	* the forms {@link threadFail} , {@link threadAssertTrue} {@link
78	<	* threadAssertEquals}, or {@link threadAssertNull}, (not
79	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
76	>	* <li>All assertions in code running in generated threads must use
77	>	* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
78	>	* #threadAssertEquals}, or {@link #threadAssertNull}, (not
79	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
80		* particularly recommended) for other code to use these forms too.
81		* Only the most typically used JUnit assertion methods are defined
82	<	* this way, but enough to live with.</li>
82	>	* this way, but enough to live with.
83		*
84	<	* <li> If you override {@link setUp} or {@link tearDown}, make sure
85	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
84	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
85	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
86		* them. These methods are used to clear and check for thread
87	<	* assertion failures.</li>
87	>	* assertion failures.
88		*
89	<	* <li>All delays and timeouts must use one of the constants {@link
90	<	* SHORT_DELAY_MS}, {@link SMALL_DELAY_MS}, {@link MEDIUM_DELAY_MS},
91	<	* {@link LONG_DELAY_MS}. The idea here is that a SHORT is always
92	<	* discriminatable from zero time, and always allows enough time for
93	<	* the small amounts of computation (creating a thread, calling a few
89	>	* <li>All delays and timeouts must use one of the constants {@code
90	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
91	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
92	>	* discriminable from zero time, and always allows enough time for the
93	>	* small amounts of computation (creating a thread, calling a few
94		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
95		* is always discriminable as larger than SHORT and smaller than
96		* MEDIUM.  And so on. These constants are set to conservative values,
97		* but even so, if there is ever any doubt, they can all be increased
98	<	* in one spot to rerun tests on slower platforms</li>
98	>	* in one spot to rerun tests on slower platforms.
99		*
100	<	* <li> All threads generated must be joined inside each test case
101	<	* method (or <tt>fail</tt> to do so) before returning from the
102	<	* method. The {@link joinPool} method can be used to do this when
103	<	* using Executors.</li>
100	>	* <li>All threads generated must be joined inside each test case
101	>	* method (or {@code fail} to do so) before returning from the
102	>	* method. The {@code joinPool} method can be used to do this when
103	>	* using Executors.
104		*
105		* </ol>
106	+	*
107	+	* <p><b>Other notes</b>
108	+	* <ul>
109	+	*
110	+	* <li>Usually, there is one testcase method per JSR166 method
111	+	* covering "normal" operation, and then as many exception-testing
112	+	* methods as there are exceptions the method can throw. Sometimes
113	+	* there are multiple tests per JSR166 method when the different
114	+	* "normal" behaviors differ significantly. And sometimes testcases
115	+	* cover multiple methods when they cannot be tested in isolation.
116	+	*
117	+	* <li>The documentation style for testcases is to provide as javadoc
118	+	* a simple sentence or two describing the property that the testcase
119	+	* method purports to test. The javadocs do not say anything about how
120	+	* the property is tested. To find out, read the code.
121	+	*
122	+	* <li>These tests are "conformance tests", and do not attempt to
123	+	* test throughput, latency, scalability or other performance factors
124	+	* (see the separate "jtreg" tests for a set intended to check these
125	+	* for the most central aspects of functionality.) So, most tests use
126	+	* the smallest sensible numbers of threads, collection sizes, etc
127	+	* needed to check basic conformance.
128	+	*
129	+	* <li>The test classes currently do not declare inclusion in
130	+	* any particular package to simplify things for people integrating
131	+	* them in TCK test suites.
132	+	*
133	+	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
134	+	* runs all JSR166 unit tests.
135	+	*
136	+	* </ul>
137		*/
138		public class JSR166TestCase extends TestCase {
139	+	private static final boolean useSecurityManager =
140	+	Boolean.getBoolean("jsr166.useSecurityManager");
141	+
142	+	protected static final boolean expensiveTests =
143	+	Boolean.getBoolean("jsr166.expensiveTests");
144	+
145	+	/**
146	+	* If true, also run tests that are not part of the official tck
147	+	* because they test unspecified implementation details.
148	+	*/
149	+	protected static final boolean testImplementationDetails =
150	+	Boolean.getBoolean("jsr166.testImplementationDetails");
151	+
152	+	/**
153	+	* If true, report on stdout all "slow" tests, that is, ones that
154	+	* take more than profileThreshold milliseconds to execute.
155	+	*/
156	+	private static final boolean profileTests =
157	+	Boolean.getBoolean("jsr166.profileTests");
158	+
159	+	/**
160	+	* The number of milliseconds that tests are permitted for
161	+	* execution without being reported, when profileTests is set.
162	+	*/
163	+	private static final long profileThreshold =
164	+	Long.getLong("jsr166.profileThreshold", 100);
165	+
166	+	/**
167	+	* The number of repetitions per test (for tickling rare bugs).
168	+	*/
169	+	private static final int runsPerTest =
170	+	Integer.getInteger("jsr166.runsPerTest", 1);
171	+
172	+	/**
173	+	* The number of repetitions of the test suite (for finding leaks?).
174	+	*/
175	+	private static final int suiteRuns =
176	+	Integer.getInteger("jsr166.suiteRuns", 1);
177	+
178	+	public JSR166TestCase() { super(); }
179	+	public JSR166TestCase(String name) { super(name); }
180	+
181	+	/**
182	+	* A filter for tests to run, matching strings of the form
183	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
184	+	* Usefully combined with jsr166.runsPerTest.
185	+	*/
186	+	private static final Pattern methodFilter = methodFilter();
187	+
188	+	private static Pattern methodFilter() {
189	+	String regex = System.getProperty("jsr166.methodFilter");
190	+	return (regex == null) ? null : Pattern.compile(regex);
191	+	}
192	+
193	+	// Instrumentation to debug very rare, but very annoying hung test runs.
194	+	static volatile TestCase currentTestCase;
195	+	// static volatile int currentRun = 0;
196	+	static {
197	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
198	+	// Avoid spurious reports with enormous runsPerTest.
199	+	// A single test case run should never take more than 1 second.
200	+	// But let's cap it at the high end too ...
201	+	final int timeoutMinutes =
202	+	Math.min(15, Math.max(runsPerTest / 60, 1));
203	+	for (TestCase lastTestCase = currentTestCase;;) {
204	+	try { MINUTES.sleep(timeoutMinutes); }
205	+	catch (InterruptedException unexpected) { break; }
206	+	if (lastTestCase == currentTestCase) {
207	+	System.err.printf(
208	+	"Looks like we're stuck running test: %s%n",
209	+	lastTestCase);
210	+	//                     System.err.printf(
211	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
212	+	//                         lastTestCase, currentRun, runsPerTest);
213	+	//                     System.err.println("availableProcessors=" +
214	+	//                         Runtime.getRuntime().availableProcessors());
215	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
216	+	dumpTestThreads();
217	+	// one stack dump is probably enough; more would be spam
218	+	break;
219	+	}
220	+	lastTestCase = currentTestCase;
221	+	}}};
222	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
223	+	thread.setDaemon(true);
224	+	thread.start();
225	+	}
226	+
227	+	//     public static String cpuModel() {
228	+	//         try {
229	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
230	+	//                 .matcher(new String(
231	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
232	+	//             matcher.find();
233	+	//             return matcher.group(1);
234	+	//         } catch (Exception ex) { return null; }
235	+	//     }
236	+
237	+	public void runBare() throws Throwable {
238	+	currentTestCase = this;
239	+	if (methodFilter == null
240	+	|| methodFilter.matcher(toString()).find())
241	+	super.runBare();
242	+	}
243	+
244	+	protected void runTest() throws Throwable {
245	+	for (int i = 0; i < runsPerTest; i++) {
246	+	// currentRun = i;
247	+	if (profileTests)
248	+	runTestProfiled();
249	+	else
250	+	super.runTest();
251	+	}
252	+	}
253	+
254	+	protected void runTestProfiled() throws Throwable {
255	+	for (int i = 0; i < 2; i++) {
256	+	long startTime = System.nanoTime();
257	+	super.runTest();
258	+	long elapsedMillis = millisElapsedSince(startTime);
259	+	if (elapsedMillis < profileThreshold)
260	+	break;
261	+	// Never report first run of any test; treat it as a
262	+	// warmup run, notably to trigger all needed classloading,
263	+	if (i > 0)
264	+	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
265	+	}
266	+	}
267	+
268	+	/**
269	+	* Runs all JSR166 unit tests using junit.textui.TestRunner.
270	+	*/
271	+	public static void main(String[] args) {
272	+	main(suite(), args);
273	+	}
274	+
275	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
276	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
277	+	long runTime;
278	+	public void startTest(Test test) {}
279	+	protected void printHeader(long runTime) {
280	+	this.runTime = runTime; // defer printing for later
281	+	}
282	+	protected void printFooter(TestResult result) {
283	+	if (result.wasSuccessful()) {
284	+	getWriter().println("OK (" + result.runCount() + " tests)"
285	+	+ "  Time: " + elapsedTimeAsString(runTime));
286	+	} else {
287	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
288	+	super.printFooter(result);
289	+	}
290	+	}
291	+	}
292	+
293	+	/**
294	+	* Returns a TestRunner that doesn't bother with unnecessary
295	+	* fluff, like printing a "." for each test case.
296	+	*/
297	+	static junit.textui.TestRunner newPithyTestRunner() {
298	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
299	+	runner.setPrinter(new PithyResultPrinter(System.out));
300	+	return runner;
301	+	}
302	+
303	+	/**
304	+	* Runs all unit tests in the given test suite.
305	+	* Actual behavior influenced by jsr166.* system properties.
306	+	*/
307	+	static void main(Test suite, String[] args) {
308	+	if (useSecurityManager) {
309	+	System.err.println("Setting a permissive security manager");
310	+	Policy.setPolicy(permissivePolicy());
311	+	System.setSecurityManager(new SecurityManager());
312	+	}
313	+	for (int i = 0; i < suiteRuns; i++) {
314	+	TestResult result = newPithyTestRunner().doRun(suite);
315	+	if (!result.wasSuccessful())
316	+	System.exit(1);
317	+	System.gc();
318	+	System.runFinalization();
319	+	}
320	+	}
321	+
322	+	public static TestSuite newTestSuite(Object... suiteOrClasses) {
323	+	TestSuite suite = new TestSuite();
324	+	for (Object suiteOrClass : suiteOrClasses) {
325	+	if (suiteOrClass instanceof TestSuite)
326	+	suite.addTest((TestSuite) suiteOrClass);
327	+	else if (suiteOrClass instanceof Class)
328	+	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
329	+	else
330	+	throw new ClassCastException("not a test suite or class");
331	+	}
332	+	return suite;
333	+	}
334	+
335	+	public static void addNamedTestClasses(TestSuite suite,
336	+	String... testClassNames) {
337	+	for (String testClassName : testClassNames) {
338	+	try {
339	+	Class<?> testClass = Class.forName(testClassName);
340	+	Method m = testClass.getDeclaredMethod("suite",
341	+	new Class<?>[0]);
342	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
343	+	} catch (Exception e) {
344	+	throw new Error("Missing test class", e);
345	+	}
346	+	}
347	+	}
348	+
349	+	public static final double JAVA_CLASS_VERSION;
350	+	public static final String JAVA_SPECIFICATION_VERSION;
351	+	static {
352	+	try {
353	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
354	+	new java.security.PrivilegedAction<Double>() {
355	+	public Double run() {
356	+	return Double.valueOf(System.getProperty("java.class.version"));}});
357	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
358	+	new java.security.PrivilegedAction<String>() {
359	+	public String run() {
360	+	return System.getProperty("java.specification.version");}});
361	+	} catch (Throwable t) {
362	+	throw new Error(t);
363	+	}
364	+	}
365	+
366	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
367	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
368	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
369	+	public static boolean atLeastJava9() {
370	+	return JAVA_CLASS_VERSION >= 53.0
371	+	// As of 2015-09, java9 still uses 52.0 class file version
372	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
373	+	}
374	+	public static boolean atLeastJava10() {
375	+	return JAVA_CLASS_VERSION >= 54.0
376	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
377	+	}
378	+
379	+	/**
380	+	* Collects all JSR166 unit tests as one suite.
381	+	*/
382	+	public static Test suite() {
383	+	// Java7+ test classes
384	+	TestSuite suite = newTestSuite(
385	+	ForkJoinPoolTest.suite(),
386	+	ForkJoinTaskTest.suite(),
387	+	RecursiveActionTest.suite(),
388	+	RecursiveTaskTest.suite(),
389	+	LinkedTransferQueueTest.suite(),
390	+	PhaserTest.suite(),
391	+	ThreadLocalRandomTest.suite(),
392	+	AbstractExecutorServiceTest.suite(),
393	+	AbstractQueueTest.suite(),
394	+	AbstractQueuedSynchronizerTest.suite(),
395	+	AbstractQueuedLongSynchronizerTest.suite(),
396	+	ArrayBlockingQueueTest.suite(),
397	+	ArrayDequeTest.suite(),
398	+	AtomicBooleanTest.suite(),
399	+	AtomicIntegerArrayTest.suite(),
400	+	AtomicIntegerFieldUpdaterTest.suite(),
401	+	AtomicIntegerTest.suite(),
402	+	AtomicLongArrayTest.suite(),
403	+	AtomicLongFieldUpdaterTest.suite(),
404	+	AtomicLongTest.suite(),
405	+	AtomicMarkableReferenceTest.suite(),
406	+	AtomicReferenceArrayTest.suite(),
407	+	AtomicReferenceFieldUpdaterTest.suite(),
408	+	AtomicReferenceTest.suite(),
409	+	AtomicStampedReferenceTest.suite(),
410	+	ConcurrentHashMapTest.suite(),
411	+	ConcurrentLinkedDequeTest.suite(),
412	+	ConcurrentLinkedQueueTest.suite(),
413	+	ConcurrentSkipListMapTest.suite(),
414	+	ConcurrentSkipListSubMapTest.suite(),
415	+	ConcurrentSkipListSetTest.suite(),
416	+	ConcurrentSkipListSubSetTest.suite(),
417	+	CopyOnWriteArrayListTest.suite(),
418	+	CopyOnWriteArraySetTest.suite(),
419	+	CountDownLatchTest.suite(),
420	+	CyclicBarrierTest.suite(),
421	+	DelayQueueTest.suite(),
422	+	EntryTest.suite(),
423	+	ExchangerTest.suite(),
424	+	ExecutorsTest.suite(),
425	+	ExecutorCompletionServiceTest.suite(),
426	+	FutureTaskTest.suite(),
427	+	LinkedBlockingDequeTest.suite(),
428	+	LinkedBlockingQueueTest.suite(),
429	+	LinkedListTest.suite(),
430	+	LockSupportTest.suite(),
431	+	PriorityBlockingQueueTest.suite(),
432	+	PriorityQueueTest.suite(),
433	+	ReentrantLockTest.suite(),
434	+	ReentrantReadWriteLockTest.suite(),
435	+	ScheduledExecutorTest.suite(),
436	+	ScheduledExecutorSubclassTest.suite(),
437	+	SemaphoreTest.suite(),
438	+	SynchronousQueueTest.suite(),
439	+	SystemTest.suite(),
440	+	ThreadLocalTest.suite(),
441	+	ThreadPoolExecutorTest.suite(),
442	+	ThreadPoolExecutorSubclassTest.suite(),
443	+	ThreadTest.suite(),
444	+	TimeUnitTest.suite(),
445	+	TreeMapTest.suite(),
446	+	TreeSetTest.suite(),
447	+	TreeSubMapTest.suite(),
448	+	TreeSubSetTest.suite());
449	+
450	+	// Java8+ test classes
451	+	if (atLeastJava8()) {
452	+	String[] java8TestClassNames = {
453	+	"Atomic8Test",
454	+	"CompletableFutureTest",
455	+	"ConcurrentHashMap8Test",
456	+	"CountedCompleterTest",
457	+	"DoubleAccumulatorTest",
458	+	"DoubleAdderTest",
459	+	"ForkJoinPool8Test",
460	+	"ForkJoinTask8Test",
461	+	"LongAccumulatorTest",
462	+	"LongAdderTest",
463	+	"SplittableRandomTest",
464	+	"StampedLockTest",
465	+	"SubmissionPublisherTest",
466	+	"ThreadLocalRandom8Test",
467	+	};
468	+	addNamedTestClasses(suite, java8TestClassNames);
469	+	}
470	+
471	+	// Java9+ test classes
472	+	if (atLeastJava9()) {
473	+	String[] java9TestClassNames = {
474	+	// Currently empty, but expecting varhandle tests
475	+	};
476	+	addNamedTestClasses(suite, java9TestClassNames);
477	+	}
478	+
479	+	return suite;
480	+	}
481	+
482	+	/** Returns list of junit-style test method names in given class. */
483	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
484	+	Method[] methods = testClass.getDeclaredMethods();
485	+	ArrayList<String> names = new ArrayList<String>(methods.length);
486	+	for (Method method : methods) {
487	+	if (method.getName().startsWith("test")
488	+	&& Modifier.isPublic(method.getModifiers())
489	+	// method.getParameterCount() requires jdk8+
490	+	&& method.getParameterTypes().length == 0) {
491	+	names.add(method.getName());
492	+	}
493	+	}
494	+	return names;
495	+	}
496	+
497	+	/**
498	+	* Returns junit-style testSuite for the given test class, but
499	+	* parameterized by passing extra data to each test.
500	+	*/
501	+	public static <ExtraData> Test parameterizedTestSuite
502	+	(Class<? extends JSR166TestCase> testClass,
503	+	Class<ExtraData> dataClass,
504	+	ExtraData data) {
505	+	try {
506	+	TestSuite suite = new TestSuite();
507	+	Constructor c =
508	+	testClass.getDeclaredConstructor(dataClass, String.class);
509	+	for (String methodName : testMethodNames(testClass))
510	+	suite.addTest((Test) c.newInstance(data, methodName));
511	+	return suite;
512	+	} catch (Exception e) {
513	+	throw new Error(e);
514	+	}
515	+	}
516	+
517	+	/**
518	+	* Returns junit-style testSuite for the jdk8 extension of the
519	+	* given test class, but parameterized by passing extra data to
520	+	* each test.  Uses reflection to allow compilation in jdk7.
521	+	*/
522	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
523	+	(Class<? extends JSR166TestCase> testClass,
524	+	Class<ExtraData> dataClass,
525	+	ExtraData data) {
526	+	if (atLeastJava8()) {
527	+	String name = testClass.getName();
528	+	String name8 = name.replaceAll("Test$", "8Test");
529	+	if (name.equals(name8)) throw new Error(name);
530	+	try {
531	+	return (Test)
532	+	Class.forName(name8)
533	+	.getMethod("testSuite", new Class[] { dataClass })
534	+	.invoke(null, data);
535	+	} catch (Exception e) {
536	+	throw new Error(e);
537	+	}
538	+	} else {
539	+	return new TestSuite();
540	+	}
541	+	}
542	+
543	+	// Delays for timing-dependent tests, in milliseconds.
544
545		public static long SHORT_DELAY_MS;
546		public static long SMALL_DELAY_MS;
547		public static long MEDIUM_DELAY_MS;
548		public static long LONG_DELAY_MS;
549
61	–
550		/**
551	<	* Return the shortest timed delay. This could
552	<	* be reimplmented to use for example a Property.
553	<	*/
551	>	* Returns the shortest timed delay. This could
552	>	* be reimplemented to use for example a Property.
553	>	*/
554		protected long getShortDelay() {
555		return 50;
556		}
557
70	–
558		/**
559	<	* Set delays as multiples fo SHORT_DELAY.
559	>	* Sets delays as multiples of SHORT_DELAY.
560		*/
561	<	protected  void setDelays() {
561	>	protected void setDelays() {
562		SHORT_DELAY_MS = getShortDelay();
563	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
563	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
564		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
565	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
565	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
566	>	}
567	>
568	>	/**
569	>	* Returns a timeout in milliseconds to be used in tests that
570	>	* verify that operations block or time out.
571	>	*/
572	>	long timeoutMillis() {
573	>	return SHORT_DELAY_MS / 4;
574	>	}
575	>
576	>	/**
577	>	* Returns a new Date instance representing a time at least
578	>	* delayMillis milliseconds in the future.
579	>	*/
580	>	Date delayedDate(long delayMillis) {
581	>	// Add 1 because currentTimeMillis is known to round into the past.
582	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
583		}
584
585		/**
586	<	* Flag set true if any threadAssert methods fail
586	>	* The first exception encountered if any threadAssertXXX method fails.
587		*/
588	<	protected volatile boolean threadFailed;
588	>	private final AtomicReference<Throwable> threadFailure
589	>	= new AtomicReference<Throwable>(null);
590
591		/**
592	<	* Initialize test to indicat that no thread assertions have failed
592	>	* Records an exception so that it can be rethrown later in the test
593	>	* harness thread, triggering a test case failure.  Only the first
594	>	* failure is recorded; subsequent calls to this method from within
595	>	* the same test have no effect.
596		*/
597	<	public void setUp() {
597	>	public void threadRecordFailure(Throwable t) {
598	>	System.err.println(t);
599	>	dumpTestThreads();
600	>	threadFailure.compareAndSet(null, t);
601	>	}
602	>
603	>	public void setUp() {
604		setDelays();
605	<	threadFailed = false;
605	>	}
606	>
607	>	void tearDownFail(String format, Object... args) {
608	>	String msg = toString() + ": " + String.format(format, args);
609	>	System.err.println(msg);
610	>	dumpTestThreads();
611	>	throw new AssertionFailedError(msg);
612	>	}
613	>
614	>	/**
615	>	* Extra checks that get done for all test cases.
616	>	*
617	>	* Triggers test case failure if any thread assertions have failed,
618	>	* by rethrowing, in the test harness thread, any exception recorded
619	>	* earlier by threadRecordFailure.
620	>	*
621	>	* Triggers test case failure if interrupt status is set in the main thread.
622	>	*/
623	>	public void tearDown() throws Exception {
624	>	Throwable t = threadFailure.getAndSet(null);
625	>	if (t != null) {
626	>	if (t instanceof Error)
627	>	throw (Error) t;
628	>	else if (t instanceof RuntimeException)
629	>	throw (RuntimeException) t;
630	>	else if (t instanceof Exception)
631	>	throw (Exception) t;
632	>	else {
633	>	AssertionFailedError afe =
634	>	new AssertionFailedError(t.toString());
635	>	afe.initCause(t);
636	>	throw afe;
637	>	}
638	>	}
639	>
640	>	if (Thread.interrupted())
641	>	tearDownFail("interrupt status set in main thread");
642	>
643	>	checkForkJoinPoolThreadLeaks();
644		}
645
646		/**
647	<	* Trigger test case failure if any thread assertions have failed
647	>	* Finds missing PoolCleaners
648		*/
649	<	public void tearDown() {
650	<	assertFalse(threadFailed);
649	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
650	>	Thread[] survivors = new Thread[7];
651	>	int count = Thread.enumerate(survivors);
652	>	for (int i = 0; i < count; i++) {
653	>	Thread thread = survivors[i];
654	>	String name = thread.getName();
655	>	if (name.startsWith("ForkJoinPool-")) {
656	>	// give thread some time to terminate
657	>	thread.join(LONG_DELAY_MS);
658	>	if (thread.isAlive())
659	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
660	>	thread);
661	>	}
662	>	}
663	>
664	>	if (!ForkJoinPool.commonPool()
665	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
666	>	tearDownFail("ForkJoin common pool thread stuck");
667		}
668
669	+	/**
670	+	* Just like fail(reason), but additionally recording (using
671	+	* threadRecordFailure) any AssertionFailedError thrown, so that
672	+	* the current testcase will fail.
673	+	*/
674		public void threadFail(String reason) {
675	<	threadFailed = true;
676	<	fail(reason);
675	>	try {
676	>	fail(reason);
677	>	} catch (AssertionFailedError t) {
678	>	threadRecordFailure(t);
679	>	throw t;
680	>	}
681		}
682
683	+	/**
684	+	* Just like assertTrue(b), but additionally recording (using
685	+	* threadRecordFailure) any AssertionFailedError thrown, so that
686	+	* the current testcase will fail.
687	+	*/
688		public void threadAssertTrue(boolean b) {
689	<	if (!b) {
108	<	threadFailed = true;
689	>	try {
690		assertTrue(b);
691	+	} catch (AssertionFailedError t) {
692	+	threadRecordFailure(t);
693	+	throw t;
694		}
695		}
696	+
697	+	/**
698	+	* Just like assertFalse(b), but additionally recording (using
699	+	* threadRecordFailure) any AssertionFailedError thrown, so that
700	+	* the current testcase will fail.
701	+	*/
702		public void threadAssertFalse(boolean b) {
703	<	if (b) {
114	<	threadFailed = true;
703	>	try {
704		assertFalse(b);
705	+	} catch (AssertionFailedError t) {
706	+	threadRecordFailure(t);
707	+	throw t;
708		}
709		}
710	+
711	+	/**
712	+	* Just like assertNull(x), but additionally recording (using
713	+	* threadRecordFailure) any AssertionFailedError thrown, so that
714	+	* the current testcase will fail.
715	+	*/
716		public void threadAssertNull(Object x) {
717	<	if (x != null) {
120	<	threadFailed = true;
717	>	try {
718		assertNull(x);
719	+	} catch (AssertionFailedError t) {
720	+	threadRecordFailure(t);
721	+	throw t;
722		}
723		}
724	+
725	+	/**
726	+	* Just like assertEquals(x, y), but additionally recording (using
727	+	* threadRecordFailure) any AssertionFailedError thrown, so that
728	+	* the current testcase will fail.
729	+	*/
730		public void threadAssertEquals(long x, long y) {
731	<	if (x != y) {
126	<	threadFailed = true;
731	>	try {
732		assertEquals(x, y);
733	+	} catch (AssertionFailedError t) {
734	+	threadRecordFailure(t);
735	+	throw t;
736		}
737		}
738	+
739	+	/**
740	+	* Just like assertEquals(x, y), but additionally recording (using
741	+	* threadRecordFailure) any AssertionFailedError thrown, so that
742	+	* the current testcase will fail.
743	+	*/
744		public void threadAssertEquals(Object x, Object y) {
745	<	if (x != y && (x == null || !x.equals(y))) {
132	<	threadFailed = true;
745	>	try {
746		assertEquals(x, y);
747	+	} catch (AssertionFailedError fail) {
748	+	threadRecordFailure(fail);
749	+	throw fail;
750	+	} catch (Throwable fail) {
751	+	threadUnexpectedException(fail);
752		}
753		}
754
755		/**
756	<	* Wait out termination of a thread pool or fail doing so
756	>	* Just like assertSame(x, y), but additionally recording (using
757	>	* threadRecordFailure) any AssertionFailedError thrown, so that
758	>	* the current testcase will fail.
759		*/
760	<	public void joinPool(ExecutorService exec) {
760	>	public void threadAssertSame(Object x, Object y) {
761		try {
762	<	exec.shutdown();
763	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, TimeUnit.MILLISECONDS));
764	<	} catch(InterruptedException ie) {
765	<	fail("unexpected exception");
762	>	assertSame(x, y);
763	>	} catch (AssertionFailedError fail) {
764	>	threadRecordFailure(fail);
765	>	throw fail;
766	>	}
767	>	}
768	>
769	>	/**
770	>	* Calls threadFail with message "should throw exception".
771	>	*/
772	>	public void threadShouldThrow() {
773	>	threadFail("should throw exception");
774	>	}
775	>
776	>	/**
777	>	* Calls threadFail with message "should throw" + exceptionName.
778	>	*/
779	>	public void threadShouldThrow(String exceptionName) {
780	>	threadFail("should throw " + exceptionName);
781	>	}
782	>
783	>	/**
784	>	* Records the given exception using {@link #threadRecordFailure},
785	>	* then rethrows the exception, wrapping it in an
786	>	* AssertionFailedError if necessary.
787	>	*/
788	>	public void threadUnexpectedException(Throwable t) {
789	>	threadRecordFailure(t);
790	>	t.printStackTrace();
791	>	if (t instanceof RuntimeException)
792	>	throw (RuntimeException) t;
793	>	else if (t instanceof Error)
794	>	throw (Error) t;
795	>	else {
796	>	AssertionFailedError afe =
797	>	new AssertionFailedError("unexpected exception: " + t);
798	>	afe.initCause(t);
799	>	throw afe;
800		}
801		}
802
803	+	/**
804	+	* Delays, via Thread.sleep, for the given millisecond delay, but
805	+	* if the sleep is shorter than specified, may re-sleep or yield
806	+	* until time elapses.  Ensures that the given time, as measured
807	+	* by System.nanoTime(), has elapsed.
808	+	*/
809	+	static void delay(long millis) throws InterruptedException {
810	+	long nanos = millis * (1000 * 1000);
811	+	final long wakeupTime = System.nanoTime() + nanos;
812	+	do {
813	+	if (millis > 0L)
814	+	Thread.sleep(millis);
815	+	else // too short to sleep
816	+	Thread.yield();
817	+	nanos = wakeupTime - System.nanoTime();
818	+	millis = nanos / (1000 * 1000);
819	+	} while (nanos >= 0L);
820	+	}
821
822	+	/**
823	+	* Allows use of try-with-resources with per-test thread pools.
824	+	*/
825	+	class PoolCleaner implements AutoCloseable {
826	+	private final ExecutorService pool;
827	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
828	+	public void close() { joinPool(pool); }
829	+	}
830	+
831	+	/**
832	+	* An extension of PoolCleaner that has an action to release the pool.
833	+	*/
834	+	class PoolCleanerWithReleaser extends PoolCleaner {
835	+	private final Runnable releaser;
836	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
837	+	super(pool);
838	+	this.releaser = releaser;
839	+	}
840	+	public void close() {
841	+	try {
842	+	releaser.run();
843	+	} finally {
844	+	super.close();
845	+	}
846	+	}
847	+	}
848	+
849	+	PoolCleaner cleaner(ExecutorService pool) {
850	+	return new PoolCleaner(pool);
851	+	}
852	+
853	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
854	+	return new PoolCleanerWithReleaser(pool, releaser);
855	+	}
856	+
857	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
858	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
859	+	}
860	+
861	+	Runnable releaser(final CountDownLatch latch) {
862	+	return new Runnable() { public void run() {
863	+	do { latch.countDown(); }
864	+	while (latch.getCount() > 0);
865	+	}};
866	+	}
867	+
868	+	/**
869	+	* Waits out termination of a thread pool or fails doing so.
870	+	*/
871	+	void joinPool(ExecutorService pool) {
872	+	try {
873	+	pool.shutdown();
874	+	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
875	+	try {
876	+	threadFail("ExecutorService " + pool +
877	+	" did not terminate in a timely manner");
878	+	} finally {
879	+	// last resort, for the benefit of subsequent tests
880	+	pool.shutdownNow();
881	+	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
882	+	}
883	+	}
884	+	} catch (SecurityException ok) {
885	+	// Allowed in case test doesn't have privs
886	+	} catch (InterruptedException fail) {
887	+	threadFail("Unexpected InterruptedException");
888	+	}
889	+	}
890	+
891	+	/** Like Runnable, but with the freedom to throw anything */
892	+	interface Action { public void run() throws Throwable; }
893	+
894	+	/**
895	+	* Runs all the given actions in parallel, failing if any fail.
896	+	* Useful for running multiple variants of tests that are
897	+	* necessarily individually slow because they must block.
898	+	*/
899	+	void testInParallel(Action ... actions) {
900	+	ExecutorService pool = Executors.newCachedThreadPool();
901	+	try (PoolCleaner cleaner = cleaner(pool)) {
902	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
903	+	for (final Action action : actions)
904	+	futures.add(pool.submit(new CheckedRunnable() {
905	+	public void realRun() throws Throwable { action.run();}}));
906	+	for (Future<?> future : futures)
907	+	try {
908	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
909	+	} catch (ExecutionException ex) {
910	+	threadUnexpectedException(ex.getCause());
911	+	} catch (Exception ex) {
912	+	threadUnexpectedException(ex);
913	+	}
914	+	}
915	+	}
916	+
917	+	/**
918	+	* A debugging tool to print stack traces of most threads, as jstack does.
919	+	* Uninteresting threads are filtered out.
920	+	*/
921	+	static void dumpTestThreads() {
922	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
923	+	System.err.println("------ stacktrace dump start ------");
924	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
925	+	String name = info.getThreadName();
926	+	if ("Signal Dispatcher".equals(name))
927	+	continue;
928	+	if ("Reference Handler".equals(name)
929	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
930	+	continue;
931	+	if ("Finalizer".equals(name)
932	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
933	+	continue;
934	+	if ("checkForWedgedTest".equals(name))
935	+	continue;
936	+	System.err.print(info);
937	+	}
938	+	System.err.println("------ stacktrace dump end ------");
939	+	}
940	+
941	+	/**
942	+	* Checks that thread does not terminate within the default
943	+	* millisecond delay of {@code timeoutMillis()}.
944	+	*/
945	+	void assertThreadStaysAlive(Thread thread) {
946	+	assertThreadStaysAlive(thread, timeoutMillis());
947	+	}
948	+
949	+	/**
950	+	* Checks that thread does not terminate within the given millisecond delay.
951	+	*/
952	+	void assertThreadStaysAlive(Thread thread, long millis) {
953	+	try {
954	+	// No need to optimize the failing case via Thread.join.
955	+	delay(millis);
956	+	assertTrue(thread.isAlive());
957	+	} catch (InterruptedException fail) {
958	+	threadFail("Unexpected InterruptedException");
959	+	}
960	+	}
961	+
962	+	/**
963	+	* Checks that the threads do not terminate within the default
964	+	* millisecond delay of {@code timeoutMillis()}.
965	+	*/
966	+	void assertThreadsStayAlive(Thread... threads) {
967	+	assertThreadsStayAlive(timeoutMillis(), threads);
968	+	}
969	+
970	+	/**
971	+	* Checks that the threads do not terminate within the given millisecond delay.
972	+	*/
973	+	void assertThreadsStayAlive(long millis, Thread... threads) {
974	+	try {
975	+	// No need to optimize the failing case via Thread.join.
976	+	delay(millis);
977	+	for (Thread thread : threads)
978	+	assertTrue(thread.isAlive());
979	+	} catch (InterruptedException fail) {
980	+	threadFail("Unexpected InterruptedException");
981	+	}
982	+	}
983	+
984	+	/**
985	+	* Checks that future.get times out, with the default timeout of
986	+	* {@code timeoutMillis()}.
987	+	*/
988	+	void assertFutureTimesOut(Future future) {
989	+	assertFutureTimesOut(future, timeoutMillis());
990	+	}
991	+
992	+	/**
993	+	* Checks that future.get times out, with the given millisecond timeout.
994	+	*/
995	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
996	+	long startTime = System.nanoTime();
997	+	try {
998	+	future.get(timeoutMillis, MILLISECONDS);
999	+	shouldThrow();
1000	+	} catch (TimeoutException success) {
1001	+	} catch (Exception fail) {
1002	+	threadUnexpectedException(fail);
1003	+	} finally { future.cancel(true); }
1004	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1005	+	}
1006	+
1007	+	/**
1008	+	* Fails with message "should throw exception".
1009	+	*/
1010	+	public void shouldThrow() {
1011	+	fail("Should throw exception");
1012	+	}
1013	+
1014	+	/**
1015	+	* Fails with message "should throw " + exceptionName.
1016	+	*/
1017	+	public void shouldThrow(String exceptionName) {
1018	+	fail("Should throw " + exceptionName);
1019	+	}
1020
1021		/**
1022		* The number of elements to place in collections, arrays, etc.
#	Line 155 | Line 1025 | public class JSR166TestCase extends Test
1025
1026		// Some convenient Integer constants
1027
1028	<	public static final Integer zero = new Integer(0);
1029	<	public static final Integer one = new Integer(1);
1030	<	public static final Integer two = new Integer(2);
1031	<	public static final Integer three  = new Integer(3);
1028	>	public static final Integer zero  = new Integer(0);
1029	>	public static final Integer one   = new Integer(1);
1030	>	public static final Integer two   = new Integer(2);
1031	>	public static final Integer three = new Integer(3);
1032		public static final Integer four  = new Integer(4);
1033		public static final Integer five  = new Integer(5);
1034	<	public static final Integer six = new Integer(6);
1034	>	public static final Integer six   = new Integer(6);
1035		public static final Integer seven = new Integer(7);
1036		public static final Integer eight = new Integer(8);
1037	<	public static final Integer nine = new Integer(9);
1037	>	public static final Integer nine  = new Integer(9);
1038		public static final Integer m1  = new Integer(-1);
1039		public static final Integer m2  = new Integer(-2);
1040		public static final Integer m3  = new Integer(-3);
1041	<	public static final Integer m4 = new Integer(-4);
1042	<	public static final Integer m5 = new Integer(-5);
1041	>	public static final Integer m4  = new Integer(-4);
1042	>	public static final Integer m5  = new Integer(-5);
1043	>	public static final Integer m6  = new Integer(-6);
1044		public static final Integer m10 = new Integer(-10);
1045
1046	+	/**
1047	+	* Runs Runnable r with a security policy that permits precisely
1048	+	* the specified permissions.  If there is no current security
1049	+	* manager, the runnable is run twice, both with and without a
1050	+	* security manager.  We require that any security manager permit
1051	+	* getPolicy/setPolicy.
1052	+	*/
1053	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1054	+	SecurityManager sm = System.getSecurityManager();
1055	+	if (sm == null) {
1056	+	r.run();
1057	+	}
1058	+	runWithSecurityManagerWithPermissions(r, permissions);
1059	+	}
1060
1061	<	// Some convenient Runnable classes
1061	>	/**
1062	>	* Runs Runnable r with a security policy that permits precisely
1063	>	* the specified permissions.  If there is no current security
1064	>	* manager, a temporary one is set for the duration of the
1065	>	* Runnable.  We require that any security manager permit
1066	>	* getPolicy/setPolicy.
1067	>	*/
1068	>	public void runWithSecurityManagerWithPermissions(Runnable r,
1069	>	Permission... permissions) {
1070	>	SecurityManager sm = System.getSecurityManager();
1071	>	if (sm == null) {
1072	>	Policy savedPolicy = Policy.getPolicy();
1073	>	try {
1074	>	Policy.setPolicy(permissivePolicy());
1075	>	System.setSecurityManager(new SecurityManager());
1076	>	runWithSecurityManagerWithPermissions(r, permissions);
1077	>	} finally {
1078	>	System.setSecurityManager(null);
1079	>	Policy.setPolicy(savedPolicy);
1080	>	}
1081	>	} else {
1082	>	Policy savedPolicy = Policy.getPolicy();
1083	>	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1084	>	Policy.setPolicy(policy);
1085
1086	<	public static class NoOpRunnable implements Runnable {
1087	<	public void run() {}
1086	>	try {
1087	>	r.run();
1088	>	} finally {
1089	>	policy.addPermission(new SecurityPermission("setPolicy"));
1090	>	Policy.setPolicy(savedPolicy);
1091	>	}
1092	>	}
1093		}
1094
1095	<	public static class NoOpCallable implements Callable {
1096	<	public Object call() { return Boolean.TRUE; }
1095	>	/**
1096	>	* Runs a runnable without any permissions.
1097	>	*/
1098	>	public void runWithoutPermissions(Runnable r) {
1099	>	runWithPermissions(r);
1100		}
1101
1102	<	public class ShortRunnable implements Runnable {
1103	<	public void run() {
1104	<	try {
1105	<	Thread.sleep(SHORT_DELAY_MS);
1102	>	/**
1103	>	* A security policy where new permissions can be dynamically added
1104	>	* or all cleared.
1105	>	*/
1106	>	public static class AdjustablePolicy extends java.security.Policy {
1107	>	Permissions perms = new Permissions();
1108	>	AdjustablePolicy(Permission... permissions) {
1109	>	for (Permission permission : permissions)
1110	>	perms.add(permission);
1111	>	}
1112	>	void addPermission(Permission perm) { perms.add(perm); }
1113	>	void clearPermissions() { perms = new Permissions(); }
1114	>	public PermissionCollection getPermissions(CodeSource cs) {
1115	>	return perms;
1116	>	}
1117	>	public PermissionCollection getPermissions(ProtectionDomain pd) {
1118	>	return perms;
1119	>	}
1120	>	public boolean implies(ProtectionDomain pd, Permission p) {
1121	>	return perms.implies(p);
1122	>	}
1123	>	public void refresh() {}
1124	>	public String toString() {
1125	>	List<Permission> ps = new ArrayList<Permission>();
1126	>	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1127	>	ps.add(e.nextElement());
1128	>	return "AdjustablePolicy with permissions " + ps;
1129	>	}
1130	>	}
1131	>
1132	>	/**
1133	>	* Returns a policy containing all the permissions we ever need.
1134	>	*/
1135	>	public static Policy permissivePolicy() {
1136	>	return new AdjustablePolicy
1137	>	// Permissions j.u.c. needs directly
1138	>	(new RuntimePermission("modifyThread"),
1139	>	new RuntimePermission("getClassLoader"),
1140	>	new RuntimePermission("setContextClassLoader"),
1141	>	// Permissions needed to change permissions!
1142	>	new SecurityPermission("getPolicy"),
1143	>	new SecurityPermission("setPolicy"),
1144	>	new RuntimePermission("setSecurityManager"),
1145	>	// Permissions needed by the junit test harness
1146	>	new RuntimePermission("accessDeclaredMembers"),
1147	>	new PropertyPermission("*", "read"),
1148	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1149	>	}
1150	>
1151	>	/**
1152	>	* Sleeps until the given time has elapsed.
1153	>	* Throws AssertionFailedError if interrupted.
1154	>	*/
1155	>	void sleep(long millis) {
1156	>	try {
1157	>	delay(millis);
1158	>	} catch (InterruptedException fail) {
1159	>	AssertionFailedError afe =
1160	>	new AssertionFailedError("Unexpected InterruptedException");
1161	>	afe.initCause(fail);
1162	>	throw afe;
1163	>	}
1164	>	}
1165	>
1166	>	/**
1167	>	* Spin-waits up to the specified number of milliseconds for the given
1168	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1169	>	*/
1170	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1171	>	long startTime = System.nanoTime();
1172	>	for (;;) {
1173	>	Thread.State s = thread.getState();
1174	>	if (s == Thread.State.BLOCKED ||
1175	>	s == Thread.State.WAITING ||
1176	>	s == Thread.State.TIMED_WAITING)
1177	>	return;
1178	>	else if (s == Thread.State.TERMINATED)
1179	>	fail("Unexpected thread termination");
1180	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1181	>	threadAssertTrue(thread.isAlive());
1182	>	return;
1183		}
1184	<	catch(Exception e) {
1185	<	threadFail("unexpectedException");
1184	>	Thread.yield();
1185	>	}
1186	>	}
1187	>
1188	>	/**
1189	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1190	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1191	>	*/
1192	>	void waitForThreadToEnterWaitState(Thread thread) {
1193	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1194	>	}
1195	>
1196	>	/**
1197	>	* Returns the number of milliseconds since time given by
1198	>	* startNanoTime, which must have been previously returned from a
1199	>	* call to {@link System#nanoTime()}.
1200	>	*/
1201	>	static long millisElapsedSince(long startNanoTime) {
1202	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1203	>	}
1204	>
1205	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1206	>	//         long startTime = System.nanoTime();
1207	>	//         try {
1208	>	//             r.run();
1209	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1210	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1211	>	//             throw new AssertionFailedError("did not return promptly");
1212	>	//     }
1213	>
1214	>	//     void assertTerminatesPromptly(Runnable r) {
1215	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1216	>	//     }
1217	>
1218	>	/**
1219	>	* Checks that timed f.get() returns the expected value, and does not
1220	>	* wait for the timeout to elapse before returning.
1221	>	*/
1222	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1223	>	long startTime = System.nanoTime();
1224	>	try {
1225	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1226	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1227	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1228	>	throw new AssertionFailedError("timed get did not return promptly");
1229	>	}
1230	>
1231	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1232	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1233	>	}
1234	>
1235	>	/**
1236	>	* Returns a new started daemon Thread running the given runnable.
1237	>	*/
1238	>	Thread newStartedThread(Runnable runnable) {
1239	>	Thread t = new Thread(runnable);
1240	>	t.setDaemon(true);
1241	>	t.start();
1242	>	return t;
1243	>	}
1244	>
1245	>	/**
1246	>	* Waits for the specified time (in milliseconds) for the thread
1247	>	* to terminate (using {@link Thread#join(long)}), else interrupts
1248	>	* the thread (in the hope that it may terminate later) and fails.
1249	>	*/
1250	>	void awaitTermination(Thread t, long timeoutMillis) {
1251	>	try {
1252	>	t.join(timeoutMillis);
1253	>	} catch (InterruptedException fail) {
1254	>	threadUnexpectedException(fail);
1255	>	} finally {
1256	>	if (t.getState() != Thread.State.TERMINATED) {
1257	>	t.interrupt();
1258	>	threadFail("timed out waiting for thread to terminate");
1259		}
1260		}
1261		}
1262
1263	<	public class ShortInterruptedRunnable implements Runnable {
1264	<	public void run() {
1263	>	/**
1264	>	* Waits for LONG_DELAY_MS milliseconds for the thread to
1265	>	* terminate (using {@link Thread#join(long)}), else interrupts
1266	>	* the thread (in the hope that it may terminate later) and fails.
1267	>	*/
1268	>	void awaitTermination(Thread t) {
1269	>	awaitTermination(t, LONG_DELAY_MS);
1270	>	}
1271	>
1272	>	// Some convenient Runnable classes
1273	>
1274	>	public abstract class CheckedRunnable implements Runnable {
1275	>	protected abstract void realRun() throws Throwable;
1276	>
1277	>	public final void run() {
1278		try {
1279	<	Thread.sleep(SHORT_DELAY_MS);
1280	<	threadFail("should throw IE");
1279	>	realRun();
1280	>	} catch (Throwable fail) {
1281	>	threadUnexpectedException(fail);
1282		}
1283	<	catch(InterruptedException success) {
1283	>	}
1284	>	}
1285	>
1286	>	public abstract class RunnableShouldThrow implements Runnable {
1287	>	protected abstract void realRun() throws Throwable;
1288	>
1289	>	final Class<?> exceptionClass;
1290	>
1291	>	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
1292	>	this.exceptionClass = exceptionClass;
1293	>	}
1294	>
1295	>	public final void run() {
1296	>	try {
1297	>	realRun();
1298	>	threadShouldThrow(exceptionClass.getSimpleName());
1299	>	} catch (Throwable t) {
1300	>	if (! exceptionClass.isInstance(t))
1301	>	threadUnexpectedException(t);
1302		}
1303		}
1304		}
1305
1306	<	public class SmallRunnable implements Runnable {
1307	<	public void run() {
1306	>	public abstract class ThreadShouldThrow extends Thread {
1307	>	protected abstract void realRun() throws Throwable;
1308	>
1309	>	final Class<?> exceptionClass;
1310	>
1311	>	<T extends Throwable> ThreadShouldThrow(Class<T> exceptionClass) {
1312	>	this.exceptionClass = exceptionClass;
1313	>	}
1314	>
1315	>	public final void run() {
1316		try {
1317	<	Thread.sleep(SMALL_DELAY_MS);
1317	>	realRun();
1318	>	threadShouldThrow(exceptionClass.getSimpleName());
1319	>	} catch (Throwable t) {
1320	>	if (! exceptionClass.isInstance(t))
1321	>	threadUnexpectedException(t);
1322		}
1323	<	catch(Exception e) {
1324	<	threadFail("unexpectedException");
1323	>	}
1324	>	}
1325	>
1326	>	public abstract class CheckedInterruptedRunnable implements Runnable {
1327	>	protected abstract void realRun() throws Throwable;
1328	>
1329	>	public final void run() {
1330	>	try {
1331	>	realRun();
1332	>	threadShouldThrow("InterruptedException");
1333	>	} catch (InterruptedException success) {
1334	>	threadAssertFalse(Thread.interrupted());
1335	>	} catch (Throwable fail) {
1336	>	threadUnexpectedException(fail);
1337		}
1338		}
1339		}
1340
1341	<	public class SmallCallable implements Callable {
1342	<	public Object call() {
1341	>	public abstract class CheckedCallable<T> implements Callable<T> {
1342	>	protected abstract T realCall() throws Throwable;
1343	>
1344	>	public final T call() {
1345		try {
1346	<	Thread.sleep(SMALL_DELAY_MS);
1346	>	return realCall();
1347	>	} catch (Throwable fail) {
1348	>	threadUnexpectedException(fail);
1349	>	return null;
1350		}
1351	<	catch(Exception e) {
1352	<	threadFail("unexpectedException");
1351	>	}
1352	>	}
1353	>
1354	>	public abstract class CheckedInterruptedCallable<T>
1355	>	implements Callable<T> {
1356	>	protected abstract T realCall() throws Throwable;
1357	>
1358	>	public final T call() {
1359	>	try {
1360	>	T result = realCall();
1361	>	threadShouldThrow("InterruptedException");
1362	>	return result;
1363	>	} catch (InterruptedException success) {
1364	>	threadAssertFalse(Thread.interrupted());
1365	>	} catch (Throwable fail) {
1366	>	threadUnexpectedException(fail);
1367		}
1368	+	return null;
1369	+	}
1370	+	}
1371	+
1372	+	public static class NoOpRunnable implements Runnable {
1373	+	public void run() {}
1374	+	}
1375	+
1376	+	public static class NoOpCallable implements Callable {
1377	+	public Object call() { return Boolean.TRUE; }
1378	+	}
1379	+
1380	+	public static final String TEST_STRING = "a test string";
1381	+
1382	+	public static class StringTask implements Callable<String> {
1383	+	final String value;
1384	+	public StringTask() { this(TEST_STRING); }
1385	+	public StringTask(String value) { this.value = value; }
1386	+	public String call() { return value; }
1387	+	}
1388	+
1389	+	public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1390	+	return new CheckedCallable<String>() {
1391	+	protected String realCall() {
1392	+	try {
1393	+	latch.await();
1394	+	} catch (InterruptedException quittingTime) {}
1395	+	return TEST_STRING;
1396	+	}};
1397	+	}
1398	+
1399	+	public Runnable countDowner(final CountDownLatch latch) {
1400	+	return new CheckedRunnable() {
1401	+	public void realRun() throws InterruptedException {
1402	+	latch.countDown();
1403	+	}};
1404	+	}
1405	+
1406	+	class LatchAwaiter extends CheckedRunnable {
1407	+	static final int NEW = 0;
1408	+	static final int RUNNING = 1;
1409	+	static final int DONE = 2;
1410	+	final CountDownLatch latch;
1411	+	int state = NEW;
1412	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1413	+	public void realRun() throws InterruptedException {
1414	+	state = 1;
1415	+	await(latch);
1416	+	state = 2;
1417	+	}
1418	+	}
1419	+
1420	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1421	+	return new LatchAwaiter(latch);
1422	+	}
1423	+
1424	+	public void await(CountDownLatch latch) {
1425	+	try {
1426	+	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1427	+	fail("timed out waiting for CountDownLatch for "
1428	+	+ (LONG_DELAY_MS/1000) + " sec");
1429	+	} catch (Throwable fail) {
1430	+	threadUnexpectedException(fail);
1431	+	}
1432	+	}
1433	+
1434	+	public void await(Semaphore semaphore) {
1435	+	try {
1436	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1437	+	fail("timed out waiting for Semaphore for "
1438	+	+ (LONG_DELAY_MS/1000) + " sec");
1439	+	} catch (Throwable fail) {
1440	+	threadUnexpectedException(fail);
1441	+	}
1442	+	}
1443	+
1444	+	//     /**
1445	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1446	+	//      */
1447	+	//     public void await(AtomicBoolean flag) {
1448	+	//         await(flag, LONG_DELAY_MS);
1449	+	//     }
1450	+
1451	+	//     /**
1452	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1453	+	//      */
1454	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1455	+	//         long startTime = System.nanoTime();
1456	+	//         while (!flag.get()) {
1457	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1458	+	//                 throw new AssertionFailedError("timed out");
1459	+	//             Thread.yield();
1460	+	//         }
1461	+	//     }
1462	+
1463	+	public static class NPETask implements Callable<String> {
1464	+	public String call() { throw new NullPointerException(); }
1465	+	}
1466	+
1467	+	public static class CallableOne implements Callable<Integer> {
1468	+	public Integer call() { return one; }
1469	+	}
1470	+
1471	+	public class ShortRunnable extends CheckedRunnable {
1472	+	protected void realRun() throws Throwable {
1473	+	delay(SHORT_DELAY_MS);
1474	+	}
1475	+	}
1476	+
1477	+	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1478	+	protected void realRun() throws InterruptedException {
1479	+	delay(SHORT_DELAY_MS);
1480	+	}
1481	+	}
1482	+
1483	+	public class SmallRunnable extends CheckedRunnable {
1484	+	protected void realRun() throws Throwable {
1485	+	delay(SMALL_DELAY_MS);
1486	+	}
1487	+	}
1488	+
1489	+	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1490	+	protected void realRun() {
1491	+	try {
1492	+	delay(SMALL_DELAY_MS);
1493	+	} catch (InterruptedException ok) {}
1494	+	}
1495	+	}
1496	+
1497	+	public class SmallCallable extends CheckedCallable {
1498	+	protected Object realCall() throws InterruptedException {
1499	+	delay(SMALL_DELAY_MS);
1500		return Boolean.TRUE;
1501		}
1502		}
1503
1504	<	public class SmallInterruptedRunnable implements Runnable {
1504	>	public class MediumRunnable extends CheckedRunnable {
1505	>	protected void realRun() throws Throwable {
1506	>	delay(MEDIUM_DELAY_MS);
1507	>	}
1508	>	}
1509	>
1510	>	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1511	>	protected void realRun() throws InterruptedException {
1512	>	delay(MEDIUM_DELAY_MS);
1513	>	}
1514	>	}
1515	>
1516	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1517	>	return new CheckedRunnable() {
1518	>	protected void realRun() {
1519	>	try {
1520	>	delay(timeoutMillis);
1521	>	} catch (InterruptedException ok) {}
1522	>	}};
1523	>	}
1524	>
1525	>	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1526	>	protected void realRun() {
1527	>	try {
1528	>	delay(MEDIUM_DELAY_MS);
1529	>	} catch (InterruptedException ok) {}
1530	>	}
1531	>	}
1532	>
1533	>	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1534	>	protected void realRun() {
1535	>	try {
1536	>	delay(LONG_DELAY_MS);
1537	>	} catch (InterruptedException ok) {}
1538	>	}
1539	>	}
1540	>
1541	>	/**
1542	>	* For use as ThreadFactory in constructors
1543	>	*/
1544	>	public static class SimpleThreadFactory implements ThreadFactory {
1545	>	public Thread newThread(Runnable r) {
1546	>	return new Thread(r);
1547	>	}
1548	>	}
1549	>
1550	>	public interface TrackedRunnable extends Runnable {
1551	>	boolean isDone();
1552	>	}
1553	>
1554	>	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1555	>	return new TrackedRunnable() {
1556	>	private volatile boolean done = false;
1557	>	public boolean isDone() { return done; }
1558	>	public void run() {
1559	>	try {
1560	>	delay(timeoutMillis);
1561	>	done = true;
1562	>	} catch (InterruptedException ok) {}
1563	>	}
1564	>	};
1565	>	}
1566	>
1567	>	public static class TrackedShortRunnable implements Runnable {
1568	>	public volatile boolean done = false;
1569		public void run() {
1570		try {
1571	<	Thread.sleep(SMALL_DELAY_MS);
1572	<	threadFail("should throw IE");
1573	<	}
237	<	catch(InterruptedException success) {
238	<	}
1571	>	delay(SHORT_DELAY_MS);
1572	>	done = true;
1573	>	} catch (InterruptedException ok) {}
1574		}
1575		}
1576
1577	+	public static class TrackedSmallRunnable implements Runnable {
1578	+	public volatile boolean done = false;
1579	+	public void run() {
1580	+	try {
1581	+	delay(SMALL_DELAY_MS);
1582	+	done = true;
1583	+	} catch (InterruptedException ok) {}
1584	+	}
1585	+	}
1586
1587	<	public class MediumRunnable implements Runnable {
1587	>	public static class TrackedMediumRunnable implements Runnable {
1588	>	public volatile boolean done = false;
1589		public void run() {
1590		try {
1591	<	Thread.sleep(MEDIUM_DELAY_MS);
1592	<	}
1593	<	catch(Exception e) {
249	<	threadFail("unexpectedException");
250	<	}
1591	>	delay(MEDIUM_DELAY_MS);
1592	>	done = true;
1593	>	} catch (InterruptedException ok) {}
1594		}
1595		}
1596
1597	<	public class MediumInterruptedRunnable implements Runnable {
1597	>	public static class TrackedLongRunnable implements Runnable {
1598	>	public volatile boolean done = false;
1599		public void run() {
1600		try {
1601	<	Thread.sleep(MEDIUM_DELAY_MS);
1602	<	threadFail("should throw IE");
1601	>	delay(LONG_DELAY_MS);
1602	>	done = true;
1603	>	} catch (InterruptedException ok) {}
1604	>	}
1605	>	}
1606	>
1607	>	public static class TrackedNoOpRunnable implements Runnable {
1608	>	public volatile boolean done = false;
1609	>	public void run() {
1610	>	done = true;
1611	>	}
1612	>	}
1613	>
1614	>	public static class TrackedCallable implements Callable {
1615	>	public volatile boolean done = false;
1616	>	public Object call() {
1617	>	try {
1618	>	delay(SMALL_DELAY_MS);
1619	>	done = true;
1620	>	} catch (InterruptedException ok) {}
1621	>	return Boolean.TRUE;
1622	>	}
1623	>	}
1624	>
1625	>	/**
1626	>	* Analog of CheckedRunnable for RecursiveAction
1627	>	*/
1628	>	public abstract class CheckedRecursiveAction extends RecursiveAction {
1629	>	protected abstract void realCompute() throws Throwable;
1630	>
1631	>	@Override protected final void compute() {
1632	>	try {
1633	>	realCompute();
1634	>	} catch (Throwable fail) {
1635	>	threadUnexpectedException(fail);
1636		}
1637	<	catch(InterruptedException success) {
1637	>	}
1638	>	}
1639	>
1640	>	/**
1641	>	* Analog of CheckedCallable for RecursiveTask
1642	>	*/
1643	>	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1644	>	protected abstract T realCompute() throws Throwable;
1645	>
1646	>	@Override protected final T compute() {
1647	>	try {
1648	>	return realCompute();
1649	>	} catch (Throwable fail) {
1650	>	threadUnexpectedException(fail);
1651	>	return null;
1652		}
1653		}
1654		}
1655
1656	<	public class MediumPossiblyInterruptedRunnable implements Runnable {
1657	<	public void run() {
1656	>	/**
1657	>	* For use as RejectedExecutionHandler in constructors
1658	>	*/
1659	>	public static class NoOpREHandler implements RejectedExecutionHandler {
1660	>	public void rejectedExecution(Runnable r,
1661	>	ThreadPoolExecutor executor) {}
1662	>	}
1663	>
1664	>	/**
1665	>	* A CyclicBarrier that uses timed await and fails with
1666	>	* AssertionFailedErrors instead of throwing checked exceptions.
1667	>	*/
1668	>	public class CheckedBarrier extends CyclicBarrier {
1669	>	public CheckedBarrier(int parties) { super(parties); }
1670	>
1671	>	public int await() {
1672		try {
1673	<	Thread.sleep(MEDIUM_DELAY_MS);
1673	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1674	>	} catch (TimeoutException timedOut) {
1675	>	throw new AssertionFailedError("timed out");
1676	>	} catch (Exception fail) {
1677	>	AssertionFailedError afe =
1678	>	new AssertionFailedError("Unexpected exception: " + fail);
1679	>	afe.initCause(fail);
1680	>	throw afe;
1681		}
1682	<	catch(InterruptedException success) {
1682	>	}
1683	>	}
1684	>
1685	>	void checkEmpty(BlockingQueue q) {
1686	>	try {
1687	>	assertTrue(q.isEmpty());
1688	>	assertEquals(0, q.size());
1689	>	assertNull(q.peek());
1690	>	assertNull(q.poll());
1691	>	assertNull(q.poll(0, MILLISECONDS));
1692	>	assertEquals(q.toString(), "[]");
1693	>	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1694	>	assertFalse(q.iterator().hasNext());
1695	>	try {
1696	>	q.element();
1697	>	shouldThrow();
1698	>	} catch (NoSuchElementException success) {}
1699	>	try {
1700	>	q.iterator().next();
1701	>	shouldThrow();
1702	>	} catch (NoSuchElementException success) {}
1703	>	try {
1704	>	q.remove();
1705	>	shouldThrow();
1706	>	} catch (NoSuchElementException success) {}
1707	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1708	>	}
1709	>
1710	>	void assertSerialEquals(Object x, Object y) {
1711	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1712	>	}
1713	>
1714	>	void assertNotSerialEquals(Object x, Object y) {
1715	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1716	>	}
1717	>
1718	>	byte[] serialBytes(Object o) {
1719	>	try {
1720	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1721	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1722	>	oos.writeObject(o);
1723	>	oos.flush();
1724	>	oos.close();
1725	>	return bos.toByteArray();
1726	>	} catch (Throwable fail) {
1727	>	threadUnexpectedException(fail);
1728	>	return new byte[0];
1729	>	}
1730	>	}
1731	>
1732	>	@SuppressWarnings("unchecked")
1733	>	<T> T serialClone(T o) {
1734	>	try {
1735	>	ObjectInputStream ois = new ObjectInputStream
1736	>	(new ByteArrayInputStream(serialBytes(o)));
1737	>	T clone = (T) ois.readObject();
1738	>	assertSame(o.getClass(), clone.getClass());
1739	>	return clone;
1740	>	} catch (Throwable fail) {
1741	>	threadUnexpectedException(fail);
1742	>	return null;
1743	>	}
1744	>	}
1745	>
1746	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1747	>	Runnable... throwingActions) {
1748	>	for (Runnable throwingAction : throwingActions) {
1749	>	boolean threw = false;
1750	>	try { throwingAction.run(); }
1751	>	catch (Throwable t) {
1752	>	threw = true;
1753	>	if (!expectedExceptionClass.isInstance(t)) {
1754	>	AssertionFailedError afe =
1755	>	new AssertionFailedError
1756	>	("Expected " + expectedExceptionClass.getName() +
1757	>	", got " + t.getClass().getName());
1758	>	afe.initCause(t);
1759	>	threadUnexpectedException(afe);
1760	>	}
1761		}
1762	+	if (!threw)
1763	+	shouldThrow(expectedExceptionClass.getName());
1764		}
1765		}
1766	<
1766	>
1767	>	public void assertIteratorExhausted(Iterator<?> it) {
1768	>	try {
1769	>	it.next();
1770	>	shouldThrow();
1771	>	} catch (NoSuchElementException success) {}
1772	>	assertFalse(it.hasNext());
1773	>	}
1774		}

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