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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.56 by jsr166, Sun Oct 3 23:59:05 2010 UTC vs.
Revision 1.203 by jsr166, Thu Sep 15 03:46:19 2016 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.PropertyPermission;
11	<	import java.util.concurrent.*;
12	<	import java.util.concurrent.atomic.AtomicReference;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.management
13	>	* @build *
14	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
17	>	*/
18	>
19		import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	+	import static java.util.concurrent.TimeUnit.MINUTES;
21	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22	+
23	+	import java.io.ByteArrayInputStream;
24	+	import java.io.ByteArrayOutputStream;
25	+	import java.io.ObjectInputStream;
26	+	import java.io.ObjectOutputStream;
27	+	import java.lang.management.ManagementFactory;
28	+	import java.lang.management.ThreadInfo;
29	+	import java.lang.management.ThreadMXBean;
30	+	import java.lang.reflect.Constructor;
31	+	import java.lang.reflect.Method;
32	+	import java.lang.reflect.Modifier;
33	+	import java.nio.file.Files;
34	+	import java.nio.file.Paths;
35		import java.security.CodeSource;
36		import java.security.Permission;
37		import java.security.PermissionCollection;
#	Line 18 | Line 39 | import java.security.Permissions;
39		import java.security.Policy;
40		import java.security.ProtectionDomain;
41		import java.security.SecurityPermission;
42	+	import java.util.ArrayList;
43	+	import java.util.Arrays;
44	+	import java.util.Collections;
45	+	import java.util.Date;
46	+	import java.util.Enumeration;
47	+	import java.util.Iterator;
48	+	import java.util.List;
49	+	import java.util.NoSuchElementException;
50	+	import java.util.PropertyPermission;
51	+	import java.util.concurrent.BlockingQueue;
52	+	import java.util.concurrent.Callable;
53	+	import java.util.concurrent.CountDownLatch;
54	+	import java.util.concurrent.CyclicBarrier;
55	+	import java.util.concurrent.ExecutionException;
56	+	import java.util.concurrent.Executors;
57	+	import java.util.concurrent.ExecutorService;
58	+	import java.util.concurrent.ForkJoinPool;
59	+	import java.util.concurrent.Future;
60	+	import java.util.concurrent.RecursiveAction;
61	+	import java.util.concurrent.RecursiveTask;
62	+	import java.util.concurrent.RejectedExecutionHandler;
63	+	import java.util.concurrent.Semaphore;
64	+	import java.util.concurrent.SynchronousQueue;
65	+	import java.util.concurrent.ThreadFactory;
66	+	import java.util.concurrent.ThreadLocalRandom;
67	+	import java.util.concurrent.ThreadPoolExecutor;
68	+	import java.util.concurrent.TimeoutException;
69	+	import java.util.concurrent.atomic.AtomicBoolean;
70	+	import java.util.concurrent.atomic.AtomicReference;
71	+	import java.util.regex.Matcher;
72	+	import java.util.regex.Pattern;
73	+
74	+	import junit.framework.AssertionFailedError;
75	+	import junit.framework.Test;
76	+	import junit.framework.TestCase;
77	+	import junit.framework.TestResult;
78	+	import junit.framework.TestSuite;
79
80		/**
81		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 29 | Line 87 | import java.security.SecurityPermission;
87		*
88		* <ol>
89		*
90	<	* <li> All assertions in code running in generated threads must use
90	>	* <li>All assertions in code running in generated threads must use
91		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
92		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
93		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
94		* particularly recommended) for other code to use these forms too.
95		* Only the most typically used JUnit assertion methods are defined
96	<	* this way, but enough to live with.</li>
96	>	* this way, but enough to live with.
97		*
98	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
98	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
99		* to invoke {@code super.setUp} and {@code super.tearDown} within
100		* them. These methods are used to clear and check for thread
101	<	* assertion failures.</li>
101	>	* assertion failures.
102		*
103		* <li>All delays and timeouts must use one of the constants {@code
104		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 51 | Line 109 | import java.security.SecurityPermission;
109		* is always discriminable as larger than SHORT and smaller than
110		* MEDIUM.  And so on. These constants are set to conservative values,
111		* but even so, if there is ever any doubt, they can all be increased
112	<	* in one spot to rerun tests on slower platforms.</li>
112	>	* in one spot to rerun tests on slower platforms.
113		*
114	<	* <li> All threads generated must be joined inside each test case
114	>	* <li>All threads generated must be joined inside each test case
115		* method (or {@code fail} to do so) before returning from the
116		* method. The {@code joinPool} method can be used to do this when
117	<	* using Executors.</li>
117	>	* using Executors.
118		*
119		* </ol>
120		*
121	<	* <p> <b>Other notes</b>
121	>	* <p><b>Other notes</b>
122		* <ul>
123		*
124	<	* <li> Usually, there is one testcase method per JSR166 method
124	>	* <li>Usually, there is one testcase method per JSR166 method
125		* covering "normal" operation, and then as many exception-testing
126		* methods as there are exceptions the method can throw. Sometimes
127		* there are multiple tests per JSR166 method when the different
128		* "normal" behaviors differ significantly. And sometimes testcases
129	<	* cover multiple methods when they cannot be tested in
72	<	* isolation.</li>
129	>	* cover multiple methods when they cannot be tested in isolation.
130		*
131	<	* <li> The documentation style for testcases is to provide as javadoc
131	>	* <li>The documentation style for testcases is to provide as javadoc
132		* a simple sentence or two describing the property that the testcase
133		* method purports to test. The javadocs do not say anything about how
134	<	* the property is tested. To find out, read the code.</li>
134	>	* the property is tested. To find out, read the code.
135		*
136	<	* <li> These tests are "conformance tests", and do not attempt to
136	>	* <li>These tests are "conformance tests", and do not attempt to
137		* test throughput, latency, scalability or other performance factors
138		* (see the separate "jtreg" tests for a set intended to check these
139		* for the most central aspects of functionality.) So, most tests use
140		* the smallest sensible numbers of threads, collection sizes, etc
141	<	* needed to check basic conformance.</li>
141	>	* needed to check basic conformance.
142		*
143		* <li>The test classes currently do not declare inclusion in
144		* any particular package to simplify things for people integrating
145	<	* them in TCK test suites.</li>
145	>	* them in TCK test suites.
146		*
147	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
148	<	* runs all JSR166 unit tests.</li>
147	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
148	>	* runs all JSR166 unit tests.
149		*
150		* </ul>
151		*/
#	Line 96 | Line 153 | public class JSR166TestCase extends Test
153		private static final boolean useSecurityManager =
154		Boolean.getBoolean("jsr166.useSecurityManager");
155
156	+	protected static final boolean expensiveTests =
157	+	Boolean.getBoolean("jsr166.expensiveTests");
158	+
159	+	/**
160	+	* If true, also run tests that are not part of the official tck
161	+	* because they test unspecified implementation details.
162	+	*/
163	+	protected static final boolean testImplementationDetails =
164	+	Boolean.getBoolean("jsr166.testImplementationDetails");
165	+
166	+	/**
167	+	* If true, report on stdout all "slow" tests, that is, ones that
168	+	* take more than profileThreshold milliseconds to execute.
169	+	*/
170	+	private static final boolean profileTests =
171	+	Boolean.getBoolean("jsr166.profileTests");
172	+
173	+	/**
174	+	* The number of milliseconds that tests are permitted for
175	+	* execution without being reported, when profileTests is set.
176	+	*/
177	+	private static final long profileThreshold =
178	+	Long.getLong("jsr166.profileThreshold", 100);
179	+
180	+	/**
181	+	* The number of repetitions per test (for tickling rare bugs).
182	+	*/
183	+	private static final int runsPerTest =
184	+	Integer.getInteger("jsr166.runsPerTest", 1);
185	+
186	+	/**
187	+	* The number of repetitions of the test suite (for finding leaks?).
188	+	*/
189	+	private static final int suiteRuns =
190	+	Integer.getInteger("jsr166.suiteRuns", 1);
191	+
192		/**
193	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
193	>	* Returns the value of the system property, or NaN if not defined.
194	>	*/
195	>	private static float systemPropertyValue(String name) {
196	>	String floatString = System.getProperty(name);
197	>	if (floatString == null)
198	>	return Float.NaN;
199	>	try {
200	>	return Float.parseFloat(floatString);
201	>	} catch (NumberFormatException ex) {
202	>	throw new IllegalArgumentException(
203	>	String.format("Bad float value in system property %s=%s",
204	>	name, floatString));
205	>	}
206	>	}
207	>
208	>	/**
209	>	* The scaling factor to apply to standard delays used in tests.
210	>	* May be initialized from any of:
211	>	* - the "jsr166.delay.factor" system property
212	>	* - the "test.timeout.factor" system property (as used by jtreg)
213	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
214	>	* - hard-coded fuzz factor when using a known slowpoke VM
215	>	*/
216	>	private static final float delayFactor = delayFactor();
217	>
218	>	private static float delayFactor() {
219	>	float x;
220	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
221	>	return x;
222	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
223	>	return x;
224	>	String prop = System.getProperty("java.vm.version");
225	>	if (prop != null && prop.matches(".*debug.*"))
226	>	return 4.0f; // How much slower is fastdebug than product?!
227	>	return 1.0f;
228	>	}
229	>
230	>	public JSR166TestCase() { super(); }
231	>	public JSR166TestCase(String name) { super(name); }
232	>
233	>	/**
234	>	* A filter for tests to run, matching strings of the form
235	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
236	>	* Usefully combined with jsr166.runsPerTest.
237	>	*/
238	>	private static final Pattern methodFilter = methodFilter();
239	>
240	>	private static Pattern methodFilter() {
241	>	String regex = System.getProperty("jsr166.methodFilter");
242	>	return (regex == null) ? null : Pattern.compile(regex);
243	>	}
244	>
245	>	// Instrumentation to debug very rare, but very annoying hung test runs.
246	>	static volatile TestCase currentTestCase;
247	>	// static volatile int currentRun = 0;
248	>	static {
249	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
250	>	// Avoid spurious reports with enormous runsPerTest.
251	>	// A single test case run should never take more than 1 second.
252	>	// But let's cap it at the high end too ...
253	>	final int timeoutMinutes =
254	>	Math.min(15, Math.max(runsPerTest / 60, 1));
255	>	for (TestCase lastTestCase = currentTestCase;;) {
256	>	try { MINUTES.sleep(timeoutMinutes); }
257	>	catch (InterruptedException unexpected) { break; }
258	>	if (lastTestCase == currentTestCase) {
259	>	System.err.printf(
260	>	"Looks like we're stuck running test: %s%n",
261	>	lastTestCase);
262	>	//                     System.err.printf(
263	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
264	>	//                         lastTestCase, currentRun, runsPerTest);
265	>	//                     System.err.println("availableProcessors=" +
266	>	//                         Runtime.getRuntime().availableProcessors());
267	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
268	>	dumpTestThreads();
269	>	// one stack dump is probably enough; more would be spam
270	>	break;
271	>	}
272	>	lastTestCase = currentTestCase;
273	>	}}};
274	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
275	>	thread.setDaemon(true);
276	>	thread.start();
277	>	}
278	>
279	>	//     public static String cpuModel() {
280	>	//         try {
281	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
282	>	//                 .matcher(new String(
283	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
284	>	//             matcher.find();
285	>	//             return matcher.group(1);
286	>	//         } catch (Exception ex) { return null; }
287	>	//     }
288	>
289	>	public void runBare() throws Throwable {
290	>	currentTestCase = this;
291	>	if (methodFilter == null
292	>	|| methodFilter.matcher(toString()).find())
293	>	super.runBare();
294	>	}
295	>
296	>	protected void runTest() throws Throwable {
297	>	for (int i = 0; i < runsPerTest; i++) {
298	>	// currentRun = i;
299	>	if (profileTests)
300	>	runTestProfiled();
301	>	else
302	>	super.runTest();
303	>	}
304	>	}
305	>
306	>	protected void runTestProfiled() throws Throwable {
307	>	for (int i = 0; i < 2; i++) {
308	>	long startTime = System.nanoTime();
309	>	super.runTest();
310	>	long elapsedMillis = millisElapsedSince(startTime);
311	>	if (elapsedMillis < profileThreshold)
312	>	break;
313	>	// Never report first run of any test; treat it as a
314	>	// warmup run, notably to trigger all needed classloading,
315	>	if (i > 0)
316	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
317	>	}
318	>	}
319	>
320	>	/**
321	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
322		*/
323		public static void main(String[] args) {
324	+	main(suite(), args);
325	+	}
326	+
327	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
328	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
329	+	long runTime;
330	+	public void startTest(Test test) {}
331	+	protected void printHeader(long runTime) {
332	+	this.runTime = runTime; // defer printing for later
333	+	}
334	+	protected void printFooter(TestResult result) {
335	+	if (result.wasSuccessful()) {
336	+	getWriter().println("OK (" + result.runCount() + " tests)"
337	+	+ "  Time: " + elapsedTimeAsString(runTime));
338	+	} else {
339	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
340	+	super.printFooter(result);
341	+	}
342	+	}
343	+	}
344	+
345	+	/**
346	+	* Returns a TestRunner that doesn't bother with unnecessary
347	+	* fluff, like printing a "." for each test case.
348	+	*/
349	+	static junit.textui.TestRunner newPithyTestRunner() {
350	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
351	+	runner.setPrinter(new PithyResultPrinter(System.out));
352	+	return runner;
353	+	}
354	+
355	+	/**
356	+	* Runs all unit tests in the given test suite.
357	+	* Actual behavior influenced by jsr166.* system properties.
358	+	*/
359	+	static void main(Test suite, String[] args) {
360		if (useSecurityManager) {
361		System.err.println("Setting a permissive security manager");
362		Policy.setPolicy(permissivePolicy());
363		System.setSecurityManager(new SecurityManager());
364		}
365	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
366	<
367	<	Test s = suite();
368	<	for (int i = 0; i < iters; ++i) {
112	<	junit.textui.TestRunner.run(s);
365	>	for (int i = 0; i < suiteRuns; i++) {
366	>	TestResult result = newPithyTestRunner().doRun(suite);
367	>	if (!result.wasSuccessful())
368	>	System.exit(1);
369		System.gc();
370		System.runFinalization();
371		}
372	<	System.exit(0);
372	>	}
373	>
374	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
375	>	TestSuite suite = new TestSuite();
376	>	for (Object suiteOrClass : suiteOrClasses) {
377	>	if (suiteOrClass instanceof TestSuite)
378	>	suite.addTest((TestSuite) suiteOrClass);
379	>	else if (suiteOrClass instanceof Class)
380	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
381	>	else
382	>	throw new ClassCastException("not a test suite or class");
383	>	}
384	>	return suite;
385	>	}
386	>
387	>	public static void addNamedTestClasses(TestSuite suite,
388	>	String... testClassNames) {
389	>	for (String testClassName : testClassNames) {
390	>	try {
391	>	Class<?> testClass = Class.forName(testClassName);
392	>	Method m = testClass.getDeclaredMethod("suite",
393	>	new Class<?>[0]);
394	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
395	>	} catch (Exception e) {
396	>	throw new Error("Missing test class", e);
397	>	}
398	>	}
399	>	}
400	>
401	>	public static final double JAVA_CLASS_VERSION;
402	>	public static final String JAVA_SPECIFICATION_VERSION;
403	>	static {
404	>	try {
405	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
406	>	new java.security.PrivilegedAction<Double>() {
407	>	public Double run() {
408	>	return Double.valueOf(System.getProperty("java.class.version"));}});
409	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
410	>	new java.security.PrivilegedAction<String>() {
411	>	public String run() {
412	>	return System.getProperty("java.specification.version");}});
413	>	} catch (Throwable t) {
414	>	throw new Error(t);
415	>	}
416	>	}
417	>
418	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
419	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
420	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
421	>	public static boolean atLeastJava9() {
422	>	return JAVA_CLASS_VERSION >= 53.0
423	>	// As of 2015-09, java9 still uses 52.0 class file version
424	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
425	>	}
426	>	public static boolean atLeastJava10() {
427	>	return JAVA_CLASS_VERSION >= 54.0
428	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
429		}
430
431		/**
432	<	* Collects all JSR166 unit tests as one suite
432	>	* Collects all JSR166 unit tests as one suite.
433		*/
434		public static Test suite() {
435	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
436	<
437	<	suite.addTest(ForkJoinPoolTest.suite());
438	<	suite.addTest(ForkJoinTaskTest.suite());
439	<	suite.addTest(RecursiveActionTest.suite());
440	<	suite.addTest(RecursiveTaskTest.suite());
441	<	suite.addTest(LinkedTransferQueueTest.suite());
442	<	suite.addTest(PhaserTest.suite());
443	<	suite.addTest(ThreadLocalRandomTest.suite());
444	<	suite.addTest(AbstractExecutorServiceTest.suite());
445	<	suite.addTest(AbstractQueueTest.suite());
446	<	suite.addTest(AbstractQueuedSynchronizerTest.suite());
447	<	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
448	<	suite.addTest(ArrayBlockingQueueTest.suite());
449	<	suite.addTest(ArrayDequeTest.suite());
450	<	suite.addTest(AtomicBooleanTest.suite());
451	<	suite.addTest(AtomicIntegerArrayTest.suite());
452	<	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
453	<	suite.addTest(AtomicIntegerTest.suite());
454	<	suite.addTest(AtomicLongArrayTest.suite());
455	<	suite.addTest(AtomicLongFieldUpdaterTest.suite());
456	<	suite.addTest(AtomicLongTest.suite());
457	<	suite.addTest(AtomicMarkableReferenceTest.suite());
458	<	suite.addTest(AtomicReferenceArrayTest.suite());
459	<	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
460	<	suite.addTest(AtomicReferenceTest.suite());
461	<	suite.addTest(AtomicStampedReferenceTest.suite());
462	<	suite.addTest(ConcurrentHashMapTest.suite());
463	<	suite.addTest(ConcurrentLinkedDequeTest.suite());
464	<	suite.addTest(ConcurrentLinkedQueueTest.suite());
465	<	suite.addTest(ConcurrentSkipListMapTest.suite());
466	<	suite.addTest(ConcurrentSkipListSubMapTest.suite());
467	<	suite.addTest(ConcurrentSkipListSetTest.suite());
468	<	suite.addTest(ConcurrentSkipListSubSetTest.suite());
469	<	suite.addTest(CopyOnWriteArrayListTest.suite());
470	<	suite.addTest(CopyOnWriteArraySetTest.suite());
471	<	suite.addTest(CountDownLatchTest.suite());
472	<	suite.addTest(CyclicBarrierTest.suite());
473	<	suite.addTest(DelayQueueTest.suite());
474	<	suite.addTest(EntryTest.suite());
475	<	suite.addTest(ExchangerTest.suite());
476	<	suite.addTest(ExecutorsTest.suite());
477	<	suite.addTest(ExecutorCompletionServiceTest.suite());
478	<	suite.addTest(FutureTaskTest.suite());
479	<	suite.addTest(LinkedBlockingDequeTest.suite());
480	<	suite.addTest(LinkedBlockingQueueTest.suite());
481	<	suite.addTest(LinkedListTest.suite());
482	<	suite.addTest(LockSupportTest.suite());
483	<	suite.addTest(PriorityBlockingQueueTest.suite());
484	<	suite.addTest(PriorityQueueTest.suite());
485	<	suite.addTest(ReentrantLockTest.suite());
486	<	suite.addTest(ReentrantReadWriteLockTest.suite());
487	<	suite.addTest(ScheduledExecutorTest.suite());
488	<	suite.addTest(ScheduledExecutorSubclassTest.suite());
489	<	suite.addTest(SemaphoreTest.suite());
490	<	suite.addTest(SynchronousQueueTest.suite());
491	<	suite.addTest(SystemTest.suite());
492	<	suite.addTest(ThreadLocalTest.suite());
493	<	suite.addTest(ThreadPoolExecutorTest.suite());
494	<	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
495	<	suite.addTest(ThreadTest.suite());
496	<	suite.addTest(TimeUnitTest.suite());
497	<	suite.addTest(TreeMapTest.suite());
498	<	suite.addTest(TreeSetTest.suite());
499	<	suite.addTest(TreeSubMapTest.suite());
500	<	suite.addTest(TreeSubSetTest.suite());
435	>	// Java7+ test classes
436	>	TestSuite suite = newTestSuite(
437	>	ForkJoinPoolTest.suite(),
438	>	ForkJoinTaskTest.suite(),
439	>	RecursiveActionTest.suite(),
440	>	RecursiveTaskTest.suite(),
441	>	LinkedTransferQueueTest.suite(),
442	>	PhaserTest.suite(),
443	>	ThreadLocalRandomTest.suite(),
444	>	AbstractExecutorServiceTest.suite(),
445	>	AbstractQueueTest.suite(),
446	>	AbstractQueuedSynchronizerTest.suite(),
447	>	AbstractQueuedLongSynchronizerTest.suite(),
448	>	ArrayBlockingQueueTest.suite(),
449	>	ArrayDequeTest.suite(),
450	>	AtomicBooleanTest.suite(),
451	>	AtomicIntegerArrayTest.suite(),
452	>	AtomicIntegerFieldUpdaterTest.suite(),
453	>	AtomicIntegerTest.suite(),
454	>	AtomicLongArrayTest.suite(),
455	>	AtomicLongFieldUpdaterTest.suite(),
456	>	AtomicLongTest.suite(),
457	>	AtomicMarkableReferenceTest.suite(),
458	>	AtomicReferenceArrayTest.suite(),
459	>	AtomicReferenceFieldUpdaterTest.suite(),
460	>	AtomicReferenceTest.suite(),
461	>	AtomicStampedReferenceTest.suite(),
462	>	ConcurrentHashMapTest.suite(),
463	>	ConcurrentLinkedDequeTest.suite(),
464	>	ConcurrentLinkedQueueTest.suite(),
465	>	ConcurrentSkipListMapTest.suite(),
466	>	ConcurrentSkipListSubMapTest.suite(),
467	>	ConcurrentSkipListSetTest.suite(),
468	>	ConcurrentSkipListSubSetTest.suite(),
469	>	CopyOnWriteArrayListTest.suite(),
470	>	CopyOnWriteArraySetTest.suite(),
471	>	CountDownLatchTest.suite(),
472	>	CyclicBarrierTest.suite(),
473	>	DelayQueueTest.suite(),
474	>	EntryTest.suite(),
475	>	ExchangerTest.suite(),
476	>	ExecutorsTest.suite(),
477	>	ExecutorCompletionServiceTest.suite(),
478	>	FutureTaskTest.suite(),
479	>	LinkedBlockingDequeTest.suite(),
480	>	LinkedBlockingQueueTest.suite(),
481	>	LinkedListTest.suite(),
482	>	LockSupportTest.suite(),
483	>	PriorityBlockingQueueTest.suite(),
484	>	PriorityQueueTest.suite(),
485	>	ReentrantLockTest.suite(),
486	>	ReentrantReadWriteLockTest.suite(),
487	>	ScheduledExecutorTest.suite(),
488	>	ScheduledExecutorSubclassTest.suite(),
489	>	SemaphoreTest.suite(),
490	>	SynchronousQueueTest.suite(),
491	>	SystemTest.suite(),
492	>	ThreadLocalTest.suite(),
493	>	ThreadPoolExecutorTest.suite(),
494	>	ThreadPoolExecutorSubclassTest.suite(),
495	>	ThreadTest.suite(),
496	>	TimeUnitTest.suite(),
497	>	TreeMapTest.suite(),
498	>	TreeSetTest.suite(),
499	>	TreeSubMapTest.suite(),
500	>	TreeSubSetTest.suite());
501	>
502	>	// Java8+ test classes
503	>	if (atLeastJava8()) {
504	>	String[] java8TestClassNames = {
505	>	"Atomic8Test",
506	>	"CompletableFutureTest",
507	>	"ConcurrentHashMap8Test",
508	>	"CountedCompleterTest",
509	>	"DoubleAccumulatorTest",
510	>	"DoubleAdderTest",
511	>	"ForkJoinPool8Test",
512	>	"ForkJoinTask8Test",
513	>	"LongAccumulatorTest",
514	>	"LongAdderTest",
515	>	"SplittableRandomTest",
516	>	"StampedLockTest",
517	>	"SubmissionPublisherTest",
518	>	"ThreadLocalRandom8Test",
519	>	"TimeUnit8Test",
520	>	};
521	>	addNamedTestClasses(suite, java8TestClassNames);
522	>	}
523	>
524	>	// Java9+ test classes
525	>	if (atLeastJava9()) {
526	>	String[] java9TestClassNames = {
527	>	"AtomicBoolean9Test",
528	>	"AtomicInteger9Test",
529	>	"AtomicIntegerArray9Test",
530	>	"AtomicLong9Test",
531	>	"AtomicLongArray9Test",
532	>	"AtomicReference9Test",
533	>	"AtomicReferenceArray9Test",
534	>	"ExecutorCompletionService9Test",
535	>	};
536	>	addNamedTestClasses(suite, java9TestClassNames);
537	>	}
538
539		return suite;
540		}
541
542	+	/** Returns list of junit-style test method names in given class. */
543	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
544	+	Method[] methods = testClass.getDeclaredMethods();
545	+	ArrayList<String> names = new ArrayList<String>(methods.length);
546	+	for (Method method : methods) {
547	+	if (method.getName().startsWith("test")
548	+	&& Modifier.isPublic(method.getModifiers())
549	+	// method.getParameterCount() requires jdk8+
550	+	&& method.getParameterTypes().length == 0) {
551	+	names.add(method.getName());
552	+	}
553	+	}
554	+	return names;
555	+	}
556	+
557	+	/**
558	+	* Returns junit-style testSuite for the given test class, but
559	+	* parameterized by passing extra data to each test.
560	+	*/
561	+	public static <ExtraData> Test parameterizedTestSuite
562	+	(Class<? extends JSR166TestCase> testClass,
563	+	Class<ExtraData> dataClass,
564	+	ExtraData data) {
565	+	try {
566	+	TestSuite suite = new TestSuite();
567	+	Constructor c =
568	+	testClass.getDeclaredConstructor(dataClass, String.class);
569	+	for (String methodName : testMethodNames(testClass))
570	+	suite.addTest((Test) c.newInstance(data, methodName));
571	+	return suite;
572	+	} catch (Exception e) {
573	+	throw new Error(e);
574	+	}
575	+	}
576	+
577	+	/**
578	+	* Returns junit-style testSuite for the jdk8 extension of the
579	+	* given test class, but parameterized by passing extra data to
580	+	* each test.  Uses reflection to allow compilation in jdk7.
581	+	*/
582	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
583	+	(Class<? extends JSR166TestCase> testClass,
584	+	Class<ExtraData> dataClass,
585	+	ExtraData data) {
586	+	if (atLeastJava8()) {
587	+	String name = testClass.getName();
588	+	String name8 = name.replaceAll("Test$", "8Test");
589	+	if (name.equals(name8)) throw new Error(name);
590	+	try {
591	+	return (Test)
592	+	Class.forName(name8)
593	+	.getMethod("testSuite", new Class[] { dataClass })
594	+	.invoke(null, data);
595	+	} catch (Exception e) {
596	+	throw new Error(e);
597	+	}
598	+	} else {
599	+	return new TestSuite();
600	+	}
601	+	}
602	+
603	+	// Delays for timing-dependent tests, in milliseconds.
604
605		public static long SHORT_DELAY_MS;
606		public static long SMALL_DELAY_MS;
607		public static long MEDIUM_DELAY_MS;
608		public static long LONG_DELAY_MS;
609
199	–
610		/**
611	<	* Returns the shortest timed delay. This could
612	<	* be reimplemented to use for example a Property.
611	>	* Returns the shortest timed delay. This can be scaled up for
612	>	* slow machines using the jsr166.delay.factor system property,
613	>	* or via jtreg's -timeoutFactor: flag.
614	>	* http://openjdk.java.net/jtreg/command-help.html
615		*/
616		protected long getShortDelay() {
617	<	return 50;
617	>	return (long) (50 * delayFactor);
618		}
619
208	–
620		/**
621		* Sets delays as multiples of SHORT_DELAY.
622		*/
#	Line 213 | Line 624 | public class JSR166TestCase extends Test
624		SHORT_DELAY_MS = getShortDelay();
625		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
626		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
627	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
627	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
628	>	}
629	>
630	>	/**
631	>	* Returns a timeout in milliseconds to be used in tests that
632	>	* verify that operations block or time out.
633	>	*/
634	>	long timeoutMillis() {
635	>	return SHORT_DELAY_MS / 4;
636	>	}
637	>
638	>	/**
639	>	* Returns a new Date instance representing a time at least
640	>	* delayMillis milliseconds in the future.
641	>	*/
642	>	Date delayedDate(long delayMillis) {
643	>	// Add 1 because currentTimeMillis is known to round into the past.
644	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
645		}
646
647		/**
#	Line 229 | Line 657 | public class JSR166TestCase extends Test
657		* the same test have no effect.
658		*/
659		public void threadRecordFailure(Throwable t) {
660	+	System.err.println(t);
661	+	dumpTestThreads();
662		threadFailure.compareAndSet(null, t);
663		}
664
#	Line 236 | Line 666 | public class JSR166TestCase extends Test
666		setDelays();
667		}
668
669	+	void tearDownFail(String format, Object... args) {
670	+	String msg = toString() + ": " + String.format(format, args);
671	+	System.err.println(msg);
672	+	dumpTestThreads();
673	+	throw new AssertionFailedError(msg);
674	+	}
675	+
676		/**
677	+	* Extra checks that get done for all test cases.
678	+	*
679		* Triggers test case failure if any thread assertions have failed,
680		* by rethrowing, in the test harness thread, any exception recorded
681		* earlier by threadRecordFailure.
682	+	*
683	+	* Triggers test case failure if interrupt status is set in the main thread.
684		*/
685		public void tearDown() throws Exception {
686	<	Throwable t = threadFailure.get();
686	>	Throwable t = threadFailure.getAndSet(null);
687		if (t != null) {
688		if (t instanceof Error)
689		throw (Error) t;
#	Line 250 | Line 691 | public class JSR166TestCase extends Test
691		throw (RuntimeException) t;
692		else if (t instanceof Exception)
693		throw (Exception) t;
694	<	else
695	<	throw new AssertionError(t);
694	>	else {
695	>	AssertionFailedError afe =
696	>	new AssertionFailedError(t.toString());
697	>	afe.initCause(t);
698	>	throw afe;
699	>	}
700	>	}
701	>
702	>	if (Thread.interrupted())
703	>	tearDownFail("interrupt status set in main thread");
704	>
705	>	checkForkJoinPoolThreadLeaks();
706	>	}
707	>
708	>	/**
709	>	* Finds missing PoolCleaners
710	>	*/
711	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
712	>	Thread[] survivors = new Thread[7];
713	>	int count = Thread.enumerate(survivors);
714	>	for (int i = 0; i < count; i++) {
715	>	Thread thread = survivors[i];
716	>	String name = thread.getName();
717	>	if (name.startsWith("ForkJoinPool-")) {
718	>	// give thread some time to terminate
719	>	thread.join(LONG_DELAY_MS);
720	>	if (thread.isAlive())
721	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
722	>	thread);
723	>	}
724		}
725	+
726	+	if (!ForkJoinPool.commonPool()
727	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
728	+	tearDownFail("ForkJoin common pool thread stuck");
729		}
730
731		/**
732		* Just like fail(reason), but additionally recording (using
733	<	* threadRecordFailure) any AssertionError thrown, so that the current
734	<	* testcase will fail.
733	>	* threadRecordFailure) any AssertionFailedError thrown, so that
734	>	* the current testcase will fail.
735		*/
736		public void threadFail(String reason) {
737		try {
738		fail(reason);
739	<	} catch (Throwable t) {
739	>	} catch (AssertionFailedError t) {
740		threadRecordFailure(t);
741	<	fail(reason);
741	>	throw t;
742		}
743		}
744
745		/**
746		* Just like assertTrue(b), but additionally recording (using
747	<	* threadRecordFailure) any AssertionError thrown, so that the current
748	<	* testcase will fail.
747	>	* threadRecordFailure) any AssertionFailedError thrown, so that
748	>	* the current testcase will fail.
749		*/
750		public void threadAssertTrue(boolean b) {
751		try {
752		assertTrue(b);
753	<	} catch (AssertionError t) {
753	>	} catch (AssertionFailedError t) {
754		threadRecordFailure(t);
755		throw t;
756		}
#	Line 285 | Line 758 | public class JSR166TestCase extends Test
758
759		/**
760		* Just like assertFalse(b), but additionally recording (using
761	<	* threadRecordFailure) any AssertionError thrown, so that the
762	<	* current testcase will fail.
761	>	* threadRecordFailure) any AssertionFailedError thrown, so that
762	>	* the current testcase will fail.
763		*/
764		public void threadAssertFalse(boolean b) {
765		try {
766		assertFalse(b);
767	<	} catch (AssertionError t) {
767	>	} catch (AssertionFailedError t) {
768		threadRecordFailure(t);
769		throw t;
770		}
#	Line 299 | Line 772 | public class JSR166TestCase extends Test
772
773		/**
774		* Just like assertNull(x), but additionally recording (using
775	<	* threadRecordFailure) any AssertionError thrown, so that the
776	<	* current testcase will fail.
775	>	* threadRecordFailure) any AssertionFailedError thrown, so that
776	>	* the current testcase will fail.
777		*/
778		public void threadAssertNull(Object x) {
779		try {
780		assertNull(x);
781	<	} catch (AssertionError t) {
781	>	} catch (AssertionFailedError t) {
782		threadRecordFailure(t);
783		throw t;
784		}
#	Line 313 | Line 786 | public class JSR166TestCase extends Test
786
787		/**
788		* Just like assertEquals(x, y), but additionally recording (using
789	<	* threadRecordFailure) any AssertionError thrown, so that the
790	<	* current testcase will fail.
789	>	* threadRecordFailure) any AssertionFailedError thrown, so that
790	>	* the current testcase will fail.
791		*/
792		public void threadAssertEquals(long x, long y) {
793		try {
794		assertEquals(x, y);
795	<	} catch (AssertionError t) {
795	>	} catch (AssertionFailedError t) {
796		threadRecordFailure(t);
797		throw t;
798		}
#	Line 327 | Line 800 | public class JSR166TestCase extends Test
800
801		/**
802		* Just like assertEquals(x, y), but additionally recording (using
803	<	* threadRecordFailure) any AssertionError thrown, so that the
804	<	* current testcase will fail.
803	>	* threadRecordFailure) any AssertionFailedError thrown, so that
804	>	* the current testcase will fail.
805		*/
806		public void threadAssertEquals(Object x, Object y) {
807		try {
808		assertEquals(x, y);
809	<	} catch (AssertionError t) {
810	<	threadRecordFailure(t);
811	<	throw t;
809	>	} catch (AssertionFailedError fail) {
810	>	threadRecordFailure(fail);
811	>	throw fail;
812	>	} catch (Throwable fail) {
813	>	threadUnexpectedException(fail);
814		}
815		}
816
817		/**
818		* Just like assertSame(x, y), but additionally recording (using
819	<	* threadRecordFailure) any AssertionError thrown, so that the
820	<	* current testcase will fail.
819	>	* threadRecordFailure) any AssertionFailedError thrown, so that
820	>	* the current testcase will fail.
821		*/
822		public void threadAssertSame(Object x, Object y) {
823		try {
824		assertSame(x, y);
825	<	} catch (AssertionError t) {
826	<	threadRecordFailure(t);
827	<	throw t;
825	>	} catch (AssertionFailedError fail) {
826	>	threadRecordFailure(fail);
827	>	throw fail;
828		}
829		}
830
#	Line 368 | Line 843 | public class JSR166TestCase extends Test
843		}
844
845		/**
846	<	* Calls threadFail with message "Unexpected exception" + ex.
846	>	* Records the given exception using {@link #threadRecordFailure},
847	>	* then rethrows the exception, wrapping it in an
848	>	* AssertionFailedError if necessary.
849		*/
850		public void threadUnexpectedException(Throwable t) {
851		threadRecordFailure(t);
852		t.printStackTrace();
376	–	// Rethrow, wrapping in an AssertionError if necessary
853		if (t instanceof RuntimeException)
854		throw (RuntimeException) t;
855		else if (t instanceof Error)
856		throw (Error) t;
857		else {
858	<	AssertionError ae = new AssertionError("unexpected exception: " + t);
859	<	t.initCause(t);
860	<	throw ae;
858	>	AssertionFailedError afe =
859	>	new AssertionFailedError("unexpected exception: " + t);
860	>	afe.initCause(t);
861	>	throw afe;
862		}
863		}
864
865		/**
866	+	* Delays, via Thread.sleep, for the given millisecond delay, but
867	+	* if the sleep is shorter than specified, may re-sleep or yield
868	+	* until time elapses.  Ensures that the given time, as measured
869	+	* by System.nanoTime(), has elapsed.
870	+	*/
871	+	static void delay(long millis) throws InterruptedException {
872	+	long nanos = millis * (1000 * 1000);
873	+	final long wakeupTime = System.nanoTime() + nanos;
874	+	do {
875	+	if (millis > 0L)
876	+	Thread.sleep(millis);
877	+	else // too short to sleep
878	+	Thread.yield();
879	+	nanos = wakeupTime - System.nanoTime();
880	+	millis = nanos / (1000 * 1000);
881	+	} while (nanos >= 0L);
882	+	}
883	+
884	+	/**
885	+	* Allows use of try-with-resources with per-test thread pools.
886	+	*/
887	+	class PoolCleaner implements AutoCloseable {
888	+	private final ExecutorService pool;
889	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
890	+	public void close() { joinPool(pool); }
891	+	}
892	+
893	+	/**
894	+	* An extension of PoolCleaner that has an action to release the pool.
895	+	*/
896	+	class PoolCleanerWithReleaser extends PoolCleaner {
897	+	private final Runnable releaser;
898	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
899	+	super(pool);
900	+	this.releaser = releaser;
901	+	}
902	+	public void close() {
903	+	try {
904	+	releaser.run();
905	+	} finally {
906	+	super.close();
907	+	}
908	+	}
909	+	}
910	+
911	+	PoolCleaner cleaner(ExecutorService pool) {
912	+	return new PoolCleaner(pool);
913	+	}
914	+
915	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
916	+	return new PoolCleanerWithReleaser(pool, releaser);
917	+	}
918	+
919	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
920	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
921	+	}
922	+
923	+	Runnable releaser(final CountDownLatch latch) {
924	+	return new Runnable() { public void run() {
925	+	do { latch.countDown(); }
926	+	while (latch.getCount() > 0);
927	+	}};
928	+	}
929	+
930	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
931	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
932	+	}
933	+
934	+	Runnable releaser(final AtomicBoolean flag) {
935	+	return new Runnable() { public void run() { flag.set(true); }};
936	+	}
937	+
938	+	/**
939		* Waits out termination of a thread pool or fails doing so.
940		*/
941	<	public void joinPool(ExecutorService exec) {
941	>	void joinPool(ExecutorService pool) {
942		try {
943	<	exec.shutdown();
944	<	assertTrue("ExecutorService did not terminate in a timely manner",
945	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
943	>	pool.shutdown();
944	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
945	>	try {
946	>	threadFail("ExecutorService " + pool +
947	>	" did not terminate in a timely manner");
948	>	} finally {
949	>	// last resort, for the benefit of subsequent tests
950	>	pool.shutdownNow();
951	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
952	>	}
953	>	}
954		} catch (SecurityException ok) {
955		// Allowed in case test doesn't have privs
956	<	} catch (InterruptedException ie) {
957	<	fail("Unexpected InterruptedException");
956	>	} catch (InterruptedException fail) {
957	>	threadFail("Unexpected InterruptedException");
958		}
959		}
960
961	+	/**
962	+	* Like Runnable, but with the freedom to throw anything.
963	+	* junit folks had the same idea:
964	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
965	+	*/
966	+	interface Action { public void run() throws Throwable; }
967	+
968	+	/**
969	+	* Runs all the given actions in parallel, failing if any fail.
970	+	* Useful for running multiple variants of tests that are
971	+	* necessarily individually slow because they must block.
972	+	*/
973	+	void testInParallel(Action ... actions) {
974	+	ExecutorService pool = Executors.newCachedThreadPool();
975	+	try (PoolCleaner cleaner = cleaner(pool)) {
976	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
977	+	for (final Action action : actions)
978	+	futures.add(pool.submit(new CheckedRunnable() {
979	+	public void realRun() throws Throwable { action.run();}}));
980	+	for (Future<?> future : futures)
981	+	try {
982	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
983	+	} catch (ExecutionException ex) {
984	+	threadUnexpectedException(ex.getCause());
985	+	} catch (Exception ex) {
986	+	threadUnexpectedException(ex);
987	+	}
988	+	}
989	+	}
990	+
991	+	/**
992	+	* A debugging tool to print stack traces of most threads, as jstack does.
993	+	* Uninteresting threads are filtered out.
994	+	*/
995	+	static void dumpTestThreads() {
996	+	SecurityManager sm = System.getSecurityManager();
997	+	if (sm != null) {
998	+	try {
999	+	System.setSecurityManager(null);
1000	+	} catch (SecurityException giveUp) {
1001	+	return;
1002	+	}
1003	+	}
1004	+
1005	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1006	+	System.err.println("------ stacktrace dump start ------");
1007	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1008	+	final String name = info.getThreadName();
1009	+	String lockName;
1010	+	if ("Signal Dispatcher".equals(name))
1011	+	continue;
1012	+	if ("Reference Handler".equals(name)
1013	+	&& (lockName = info.getLockName()) != null
1014	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1015	+	continue;
1016	+	if ("Finalizer".equals(name)
1017	+	&& (lockName = info.getLockName()) != null
1018	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1019	+	continue;
1020	+	if ("checkForWedgedTest".equals(name))
1021	+	continue;
1022	+	System.err.print(info);
1023	+	}
1024	+	System.err.println("------ stacktrace dump end ------");
1025	+
1026	+	if (sm != null) System.setSecurityManager(sm);
1027	+	}
1028	+
1029	+	/**
1030	+	* Checks that thread does not terminate within the default
1031	+	* millisecond delay of {@code timeoutMillis()}.
1032	+	*/
1033	+	void assertThreadStaysAlive(Thread thread) {
1034	+	assertThreadStaysAlive(thread, timeoutMillis());
1035	+	}
1036	+
1037	+	/**
1038	+	* Checks that thread does not terminate within the given millisecond delay.
1039	+	*/
1040	+	void assertThreadStaysAlive(Thread thread, long millis) {
1041	+	try {
1042	+	// No need to optimize the failing case via Thread.join.
1043	+	delay(millis);
1044	+	assertTrue(thread.isAlive());
1045	+	} catch (InterruptedException fail) {
1046	+	threadFail("Unexpected InterruptedException");
1047	+	}
1048	+	}
1049	+
1050	+	/**
1051	+	* Checks that the threads do not terminate within the default
1052	+	* millisecond delay of {@code timeoutMillis()}.
1053	+	*/
1054	+	void assertThreadsStayAlive(Thread... threads) {
1055	+	assertThreadsStayAlive(timeoutMillis(), threads);
1056	+	}
1057	+
1058	+	/**
1059	+	* Checks that the threads do not terminate within the given millisecond delay.
1060	+	*/
1061	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1062	+	try {
1063	+	// No need to optimize the failing case via Thread.join.
1064	+	delay(millis);
1065	+	for (Thread thread : threads)
1066	+	assertTrue(thread.isAlive());
1067	+	} catch (InterruptedException fail) {
1068	+	threadFail("Unexpected InterruptedException");
1069	+	}
1070	+	}
1071	+
1072	+	/**
1073	+	* Checks that future.get times out, with the default timeout of
1074	+	* {@code timeoutMillis()}.
1075	+	*/
1076	+	void assertFutureTimesOut(Future future) {
1077	+	assertFutureTimesOut(future, timeoutMillis());
1078	+	}
1079	+
1080	+	/**
1081	+	* Checks that future.get times out, with the given millisecond timeout.
1082	+	*/
1083	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1084	+	long startTime = System.nanoTime();
1085	+	try {
1086	+	future.get(timeoutMillis, MILLISECONDS);
1087	+	shouldThrow();
1088	+	} catch (TimeoutException success) {
1089	+	} catch (Exception fail) {
1090	+	threadUnexpectedException(fail);
1091	+	} finally { future.cancel(true); }
1092	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1093	+	}
1094
1095		/**
1096		* Fails with message "should throw exception".
#	Line 416 | Line 1107 | public class JSR166TestCase extends Test
1107		}
1108
1109		/**
419	–	* Fails with message "Unexpected exception: " + ex.
420	–	*/
421	–	public void unexpectedException(Throwable ex) {
422	–	ex.printStackTrace();
423	–	fail("Unexpected exception: " + ex);
424	–	}
425	–
426	–
427	–	/**
1110		* The number of elements to place in collections, arrays, etc.
1111		*/
1112		public static final int SIZE = 20;
#	Line 449 | Line 1131 | public class JSR166TestCase extends Test
1131		public static final Integer m6  = new Integer(-6);
1132		public static final Integer m10 = new Integer(-10);
1133
452	–
1134		/**
1135		* Runs Runnable r with a security policy that permits precisely
1136		* the specified permissions.  If there is no current security
#	Line 461 | Line 1142 | public class JSR166TestCase extends Test
1142		SecurityManager sm = System.getSecurityManager();
1143		if (sm == null) {
1144		r.run();
1145	+	}
1146	+	runWithSecurityManagerWithPermissions(r, permissions);
1147	+	}
1148	+
1149	+	/**
1150	+	* Runs Runnable r with a security policy that permits precisely
1151	+	* the specified permissions.  If there is no current security
1152	+	* manager, a temporary one is set for the duration of the
1153	+	* Runnable.  We require that any security manager permit
1154	+	* getPolicy/setPolicy.
1155	+	*/
1156	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1157	+	Permission... permissions) {
1158	+	SecurityManager sm = System.getSecurityManager();
1159	+	if (sm == null) {
1160		Policy savedPolicy = Policy.getPolicy();
1161		try {
1162		Policy.setPolicy(permissivePolicy());
1163		System.setSecurityManager(new SecurityManager());
1164	<	runWithPermissions(r, permissions);
1164	>	runWithSecurityManagerWithPermissions(r, permissions);
1165		} finally {
1166		System.setSecurityManager(null);
1167		Policy.setPolicy(savedPolicy);
#	Line 513 | Line 1209 | public class JSR166TestCase extends Test
1209		return perms.implies(p);
1210		}
1211		public void refresh() {}
1212	+	public String toString() {
1213	+	List<Permission> ps = new ArrayList<Permission>();
1214	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1215	+	ps.add(e.nextElement());
1216	+	return "AdjustablePolicy with permissions " + ps;
1217	+	}
1218		}
1219
1220		/**
#	Line 535 | Line 1237 | public class JSR166TestCase extends Test
1237		}
1238
1239		/**
1240	<	* Sleep until the timeout has elapsed, or interrupted.
1241	<	* Does <em>NOT</em> throw InterruptedException.
1240	>	* Sleeps until the given time has elapsed.
1241	>	* Throws AssertionFailedError if interrupted.
1242		*/
1243	<	void sleepTillInterrupted(long timeoutMillis) {
1243	>	static void sleep(long millis) {
1244		try {
1245	<	Thread.sleep(timeoutMillis);
1246	<	} catch (InterruptedException wakeup) {}
1245	>	delay(millis);
1246	>	} catch (InterruptedException fail) {
1247	>	AssertionFailedError afe =
1248	>	new AssertionFailedError("Unexpected InterruptedException");
1249	>	afe.initCause(fail);
1250	>	throw afe;
1251	>	}
1252		}
1253
1254		/**
1255	<	* Returns a new started Thread running the given runnable.
1255	>	* Spin-waits up to the specified number of milliseconds for the given
1256	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1257	>	*/
1258	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1259	>	long startTime = 0L;
1260	>	for (;;) {
1261	>	Thread.State s = thread.getState();
1262	>	if (s == Thread.State.BLOCKED ||
1263	>	s == Thread.State.WAITING ||
1264	>	s == Thread.State.TIMED_WAITING)
1265	>	return;
1266	>	else if (s == Thread.State.TERMINATED)
1267	>	fail("Unexpected thread termination");
1268	>	else if (startTime == 0L)
1269	>	startTime = System.nanoTime();
1270	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1271	>	threadAssertTrue(thread.isAlive());
1272	>	return;
1273	>	}
1274	>	Thread.yield();
1275	>	}
1276	>	}
1277	>
1278	>	/**
1279	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1280	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1281	>	*/
1282	>	void waitForThreadToEnterWaitState(Thread thread) {
1283	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1284	>	}
1285	>
1286	>	/**
1287	>	* Returns the number of milliseconds since time given by
1288	>	* startNanoTime, which must have been previously returned from a
1289	>	* call to {@link System#nanoTime()}.
1290	>	*/
1291	>	static long millisElapsedSince(long startNanoTime) {
1292	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1293	>	}
1294	>
1295	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1296	>	//         long startTime = System.nanoTime();
1297	>	//         try {
1298	>	//             r.run();
1299	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1300	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1301	>	//             throw new AssertionFailedError("did not return promptly");
1302	>	//     }
1303	>
1304	>	//     void assertTerminatesPromptly(Runnable r) {
1305	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1306	>	//     }
1307	>
1308	>	/**
1309	>	* Checks that timed f.get() returns the expected value, and does not
1310	>	* wait for the timeout to elapse before returning.
1311	>	*/
1312	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1313	>	long startTime = System.nanoTime();
1314	>	try {
1315	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1316	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1317	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1318	>	throw new AssertionFailedError("timed get did not return promptly");
1319	>	}
1320	>
1321	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1322	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1323	>	}
1324	>
1325	>	/**
1326	>	* Returns a new started daemon Thread running the given runnable.
1327		*/
1328		Thread newStartedThread(Runnable runnable) {
1329		Thread t = new Thread(runnable);
1330	+	t.setDaemon(true);
1331		t.start();
1332		return t;
1333		}
1334
1335	+	/**
1336	+	* Waits for the specified time (in milliseconds) for the thread
1337	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1338	+	* the thread (in the hope that it may terminate later) and fails.
1339	+	*/
1340	+	void awaitTermination(Thread t, long timeoutMillis) {
1341	+	try {
1342	+	t.join(timeoutMillis);
1343	+	} catch (InterruptedException fail) {
1344	+	threadUnexpectedException(fail);
1345	+	} finally {
1346	+	if (t.getState() != Thread.State.TERMINATED) {
1347	+	t.interrupt();
1348	+	threadFail("timed out waiting for thread to terminate");
1349	+	}
1350	+	}
1351	+	}
1352	+
1353	+	/**
1354	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1355	+	* terminate (using {@link Thread#join(long)}), else interrupts
1356	+	* the thread (in the hope that it may terminate later) and fails.
1357	+	*/
1358	+	void awaitTermination(Thread t) {
1359	+	awaitTermination(t, LONG_DELAY_MS);
1360	+	}
1361	+
1362		// Some convenient Runnable classes
1363
1364		public abstract class CheckedRunnable implements Runnable {
#	Line 561 | Line 1367 | public class JSR166TestCase extends Test
1367		public final void run() {
1368		try {
1369		realRun();
1370	<	} catch (Throwable t) {
1371	<	threadUnexpectedException(t);
1370	>	} catch (Throwable fail) {
1371	>	threadUnexpectedException(fail);
1372		}
1373		}
1374		}
#	Line 615 | Line 1421 | public class JSR166TestCase extends Test
1421		realRun();
1422		threadShouldThrow("InterruptedException");
1423		} catch (InterruptedException success) {
1424	<	} catch (Throwable t) {
1425	<	threadUnexpectedException(t);
1424	>	threadAssertFalse(Thread.interrupted());
1425	>	} catch (Throwable fail) {
1426	>	threadUnexpectedException(fail);
1427		}
1428		}
1429		}
#	Line 627 | Line 1434 | public class JSR166TestCase extends Test
1434		public final T call() {
1435		try {
1436		return realCall();
1437	<	} catch (Throwable t) {
1438	<	threadUnexpectedException(t);
1437	>	} catch (Throwable fail) {
1438	>	threadUnexpectedException(fail);
1439		return null;
1440		}
1441		}
#	Line 644 | Line 1451 | public class JSR166TestCase extends Test
1451		threadShouldThrow("InterruptedException");
1452		return result;
1453		} catch (InterruptedException success) {
1454	<	} catch (Throwable t) {
1455	<	threadUnexpectedException(t);
1454	>	threadAssertFalse(Thread.interrupted());
1455	>	} catch (Throwable fail) {
1456	>	threadUnexpectedException(fail);
1457		}
1458		return null;
1459		}
#	Line 662 | Line 1470 | public class JSR166TestCase extends Test
1470		public static final String TEST_STRING = "a test string";
1471
1472		public static class StringTask implements Callable<String> {
1473	<	public String call() { return TEST_STRING; }
1473	>	final String value;
1474	>	public StringTask() { this(TEST_STRING); }
1475	>	public StringTask(String value) { this.value = value; }
1476	>	public String call() { return value; }
1477		}
1478
1479		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1480		return new CheckedCallable<String>() {
1481	<	public String realCall() {
1481	>	protected String realCall() {
1482		try {
1483		latch.await();
1484		} catch (InterruptedException quittingTime) {}
#	Line 675 | Line 1486 | public class JSR166TestCase extends Test
1486		}};
1487		}
1488
1489	+	public Runnable countDowner(final CountDownLatch latch) {
1490	+	return new CheckedRunnable() {
1491	+	public void realRun() throws InterruptedException {
1492	+	latch.countDown();
1493	+	}};
1494	+	}
1495	+
1496	+	class LatchAwaiter extends CheckedRunnable {
1497	+	static final int NEW = 0;
1498	+	static final int RUNNING = 1;
1499	+	static final int DONE = 2;
1500	+	final CountDownLatch latch;
1501	+	int state = NEW;
1502	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1503	+	public void realRun() throws InterruptedException {
1504	+	state = 1;
1505	+	await(latch);
1506	+	state = 2;
1507	+	}
1508	+	}
1509	+
1510	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1511	+	return new LatchAwaiter(latch);
1512	+	}
1513	+
1514	+	public void await(CountDownLatch latch, long timeoutMillis) {
1515	+	try {
1516	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1517	+	fail("timed out waiting for CountDownLatch for "
1518	+	+ (timeoutMillis/1000) + " sec");
1519	+	} catch (Throwable fail) {
1520	+	threadUnexpectedException(fail);
1521	+	}
1522	+	}
1523	+
1524	+	public void await(CountDownLatch latch) {
1525	+	await(latch, LONG_DELAY_MS);
1526	+	}
1527	+
1528	+	public void await(Semaphore semaphore) {
1529	+	try {
1530	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1531	+	fail("timed out waiting for Semaphore for "
1532	+	+ (LONG_DELAY_MS/1000) + " sec");
1533	+	} catch (Throwable fail) {
1534	+	threadUnexpectedException(fail);
1535	+	}
1536	+	}
1537	+
1538	+	//     /**
1539	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1540	+	//      */
1541	+	//     public void await(AtomicBoolean flag) {
1542	+	//         await(flag, LONG_DELAY_MS);
1543	+	//     }
1544	+
1545	+	//     /**
1546	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1547	+	//      */
1548	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1549	+	//         long startTime = System.nanoTime();
1550	+	//         while (!flag.get()) {
1551	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1552	+	//                 throw new AssertionFailedError("timed out");
1553	+	//             Thread.yield();
1554	+	//         }
1555	+	//     }
1556	+
1557		public static class NPETask implements Callable<String> {
1558		public String call() { throw new NullPointerException(); }
1559		}
#	Line 685 | Line 1564 | public class JSR166TestCase extends Test
1564
1565		public class ShortRunnable extends CheckedRunnable {
1566		protected void realRun() throws Throwable {
1567	<	Thread.sleep(SHORT_DELAY_MS);
1567	>	delay(SHORT_DELAY_MS);
1568		}
1569		}
1570
1571		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1572		protected void realRun() throws InterruptedException {
1573	<	Thread.sleep(SHORT_DELAY_MS);
1573	>	delay(SHORT_DELAY_MS);
1574		}
1575		}
1576
1577		public class SmallRunnable extends CheckedRunnable {
1578		protected void realRun() throws Throwable {
1579	<	Thread.sleep(SMALL_DELAY_MS);
1579	>	delay(SMALL_DELAY_MS);
1580		}
1581		}
1582
1583		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1584		protected void realRun() {
1585		try {
1586	<	Thread.sleep(SMALL_DELAY_MS);
1586	>	delay(SMALL_DELAY_MS);
1587		} catch (InterruptedException ok) {}
1588		}
1589		}
1590
1591		public class SmallCallable extends CheckedCallable {
1592		protected Object realCall() throws InterruptedException {
1593	<	Thread.sleep(SMALL_DELAY_MS);
1593	>	delay(SMALL_DELAY_MS);
1594		return Boolean.TRUE;
1595		}
1596		}
1597
719	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
720	–	protected void realRun() throws InterruptedException {
721	–	Thread.sleep(SMALL_DELAY_MS);
722	–	}
723	–	}
724	–
1598		public class MediumRunnable extends CheckedRunnable {
1599		protected void realRun() throws Throwable {
1600	<	Thread.sleep(MEDIUM_DELAY_MS);
1600	>	delay(MEDIUM_DELAY_MS);
1601		}
1602		}
1603
1604		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1605		protected void realRun() throws InterruptedException {
1606	<	Thread.sleep(MEDIUM_DELAY_MS);
1606	>	delay(MEDIUM_DELAY_MS);
1607		}
1608		}
1609
1610	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1611	+	return new CheckedRunnable() {
1612	+	protected void realRun() {
1613	+	try {
1614	+	delay(timeoutMillis);
1615	+	} catch (InterruptedException ok) {}
1616	+	}};
1617	+	}
1618	+
1619		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1620		protected void realRun() {
1621		try {
1622	<	Thread.sleep(MEDIUM_DELAY_MS);
1622	>	delay(MEDIUM_DELAY_MS);
1623		} catch (InterruptedException ok) {}
1624		}
1625		}
#	Line 745 | Line 1627 | public class JSR166TestCase extends Test
1627		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1628		protected void realRun() {
1629		try {
1630	<	Thread.sleep(LONG_DELAY_MS);
1630	>	delay(LONG_DELAY_MS);
1631		} catch (InterruptedException ok) {}
1632		}
1633		}
#	Line 759 | Line 1641 | public class JSR166TestCase extends Test
1641		}
1642		}
1643
1644	+	public interface TrackedRunnable extends Runnable {
1645	+	boolean isDone();
1646	+	}
1647	+
1648	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1649	+	return new TrackedRunnable() {
1650	+	private volatile boolean done = false;
1651	+	public boolean isDone() { return done; }
1652	+	public void run() {
1653	+	try {
1654	+	delay(timeoutMillis);
1655	+	done = true;
1656	+	} catch (InterruptedException ok) {}
1657	+	}
1658	+	};
1659	+	}
1660	+
1661		public static class TrackedShortRunnable implements Runnable {
1662		public volatile boolean done = false;
1663		public void run() {
1664		try {
1665	<	Thread.sleep(SMALL_DELAY_MS);
1665	>	delay(SHORT_DELAY_MS);
1666	>	done = true;
1667	>	} catch (InterruptedException ok) {}
1668	>	}
1669	>	}
1670	>
1671	>	public static class TrackedSmallRunnable implements Runnable {
1672	>	public volatile boolean done = false;
1673	>	public void run() {
1674	>	try {
1675	>	delay(SMALL_DELAY_MS);
1676		done = true;
1677		} catch (InterruptedException ok) {}
1678		}
#	Line 773 | Line 1682 | public class JSR166TestCase extends Test
1682		public volatile boolean done = false;
1683		public void run() {
1684		try {
1685	<	Thread.sleep(MEDIUM_DELAY_MS);
1685	>	delay(MEDIUM_DELAY_MS);
1686		done = true;
1687		} catch (InterruptedException ok) {}
1688		}
#	Line 783 | Line 1692 | public class JSR166TestCase extends Test
1692		public volatile boolean done = false;
1693		public void run() {
1694		try {
1695	<	Thread.sleep(LONG_DELAY_MS);
1695	>	delay(LONG_DELAY_MS);
1696		done = true;
1697		} catch (InterruptedException ok) {}
1698		}
#	Line 800 | Line 1709 | public class JSR166TestCase extends Test
1709		public volatile boolean done = false;
1710		public Object call() {
1711		try {
1712	<	Thread.sleep(SMALL_DELAY_MS);
1712	>	delay(SMALL_DELAY_MS);
1713		done = true;
1714		} catch (InterruptedException ok) {}
1715		return Boolean.TRUE;
#	Line 813 | Line 1722 | public class JSR166TestCase extends Test
1722		public abstract class CheckedRecursiveAction extends RecursiveAction {
1723		protected abstract void realCompute() throws Throwable;
1724
1725	<	public final void compute() {
1725	>	@Override protected final void compute() {
1726		try {
1727		realCompute();
1728	<	} catch (Throwable t) {
1729	<	threadUnexpectedException(t);
1728	>	} catch (Throwable fail) {
1729	>	threadUnexpectedException(fail);
1730		}
1731		}
1732		}
#	Line 828 | Line 1737 | public class JSR166TestCase extends Test
1737		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1738		protected abstract T realCompute() throws Throwable;
1739
1740	<	public final T compute() {
1740	>	@Override protected final T compute() {
1741		try {
1742		return realCompute();
1743	<	} catch (Throwable t) {
1744	<	threadUnexpectedException(t);
1743	>	} catch (Throwable fail) {
1744	>	threadUnexpectedException(fail);
1745		return null;
1746		}
1747		}
#	Line 846 | Line 1755 | public class JSR166TestCase extends Test
1755		ThreadPoolExecutor executor) {}
1756		}
1757
1758	+	/**
1759	+	* A CyclicBarrier that uses timed await and fails with
1760	+	* AssertionFailedErrors instead of throwing checked exceptions.
1761	+	*/
1762	+	public static class CheckedBarrier extends CyclicBarrier {
1763	+	public CheckedBarrier(int parties) { super(parties); }
1764	+
1765	+	public int await() {
1766	+	try {
1767	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1768	+	} catch (TimeoutException timedOut) {
1769	+	throw new AssertionFailedError("timed out");
1770	+	} catch (Exception fail) {
1771	+	AssertionFailedError afe =
1772	+	new AssertionFailedError("Unexpected exception: " + fail);
1773	+	afe.initCause(fail);
1774	+	throw afe;
1775	+	}
1776	+	}
1777	+	}
1778	+
1779	+	void checkEmpty(BlockingQueue q) {
1780	+	try {
1781	+	assertTrue(q.isEmpty());
1782	+	assertEquals(0, q.size());
1783	+	assertNull(q.peek());
1784	+	assertNull(q.poll());
1785	+	assertNull(q.poll(0, MILLISECONDS));
1786	+	assertEquals(q.toString(), "[]");
1787	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1788	+	assertFalse(q.iterator().hasNext());
1789	+	try {
1790	+	q.element();
1791	+	shouldThrow();
1792	+	} catch (NoSuchElementException success) {}
1793	+	try {
1794	+	q.iterator().next();
1795	+	shouldThrow();
1796	+	} catch (NoSuchElementException success) {}
1797	+	try {
1798	+	q.remove();
1799	+	shouldThrow();
1800	+	} catch (NoSuchElementException success) {}
1801	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1802	+	}
1803	+
1804	+	void assertSerialEquals(Object x, Object y) {
1805	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1806	+	}
1807	+
1808	+	void assertNotSerialEquals(Object x, Object y) {
1809	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1810	+	}
1811	+
1812	+	byte[] serialBytes(Object o) {
1813	+	try {
1814	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1815	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1816	+	oos.writeObject(o);
1817	+	oos.flush();
1818	+	oos.close();
1819	+	return bos.toByteArray();
1820	+	} catch (Throwable fail) {
1821	+	threadUnexpectedException(fail);
1822	+	return new byte[0];
1823	+	}
1824	+	}
1825	+
1826	+	@SuppressWarnings("unchecked")
1827	+	<T> T serialClone(T o) {
1828	+	try {
1829	+	ObjectInputStream ois = new ObjectInputStream
1830	+	(new ByteArrayInputStream(serialBytes(o)));
1831	+	T clone = (T) ois.readObject();
1832	+	assertSame(o.getClass(), clone.getClass());
1833	+	return clone;
1834	+	} catch (Throwable fail) {
1835	+	threadUnexpectedException(fail);
1836	+	return null;
1837	+	}
1838	+	}
1839	+
1840	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1841	+	Runnable... throwingActions) {
1842	+	for (Runnable throwingAction : throwingActions) {
1843	+	boolean threw = false;
1844	+	try { throwingAction.run(); }
1845	+	catch (Throwable t) {
1846	+	threw = true;
1847	+	if (!expectedExceptionClass.isInstance(t)) {
1848	+	AssertionFailedError afe =
1849	+	new AssertionFailedError
1850	+	("Expected " + expectedExceptionClass.getName() +
1851	+	", got " + t.getClass().getName());
1852	+	afe.initCause(t);
1853	+	threadUnexpectedException(afe);
1854	+	}
1855	+	}
1856	+	if (!threw)
1857	+	shouldThrow(expectedExceptionClass.getName());
1858	+	}
1859	+	}
1860	+
1861	+	public void assertIteratorExhausted(Iterator<?> it) {
1862	+	try {
1863	+	it.next();
1864	+	shouldThrow();
1865	+	} catch (NoSuchElementException success) {}
1866	+	assertFalse(it.hasNext());
1867	+	}
1868	+
1869	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1870	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1871	+	}
1872	+
1873	+	public Runnable runnableThrowing(final RuntimeException ex) {
1874	+	return new Runnable() { public void run() { throw ex; }};
1875	+	}
1876	+
1877	+	/** A reusable thread pool to be shared by tests. */
1878	+	static final ExecutorService cachedThreadPool =
1879	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1880	+	1000L, MILLISECONDS,
1881	+	new SynchronousQueue<Runnable>());
1882	+
1883	+	static <T> void shuffle(T[] array) {
1884	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1885	+	}
1886		}

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