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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.50 by jsr166, Wed Aug 25 21:40:03 2010 UTC vs.
Revision 1.205 by jsr166, Mon Oct 17 17:52:30 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.*;
11	<	import java.util.concurrent.*;
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 java.io.*;
21	<	import java.security.*;
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;
38	>	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 23 | Line 87 | import java.security.*;
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
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},
105		* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
106		* discriminable from zero time, and always allows enough time for the
#	Line 45 | Line 109 | import java.security.*;
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
66	<	* 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 90 | 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	+	* 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
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 = 1;
366	<	if (args.length > 0)
367	<	iters = Integer.parseInt(args[0]);
368	<	Test s = suite();
106	<	for (int i = 0; i < iters; ++i) {
107	<	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(new TestSuite(ForkJoinPoolTest.class));
438	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
439	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
440	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
441	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
442	<	suite.addTest(new TestSuite(PhaserTest.class));
443	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
444	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
445	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
446	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
447	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
448	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
449	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
450	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
451	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
452	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
453	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
454	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
455	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
456	<	suite.addTest(new TestSuite(AtomicLongTest.class));
457	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
458	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
459	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
460	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
461	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
462	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
463	<	suite.addTest(new TestSuite(ConcurrentLinkedDequeTest.class));
464	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
465	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
466	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
467	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
468	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
469	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
470	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
471	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
472	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
473	<	suite.addTest(new TestSuite(DelayQueueTest.class));
474	<	suite.addTest(new TestSuite(EntryTest.class));
475	<	suite.addTest(new TestSuite(ExchangerTest.class));
476	<	suite.addTest(new TestSuite(ExecutorsTest.class));
477	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
478	<	suite.addTest(new TestSuite(FutureTaskTest.class));
479	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
480	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
481	<	suite.addTest(new TestSuite(LinkedListTest.class));
482	<	suite.addTest(new TestSuite(LockSupportTest.class));
483	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
484	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
485	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
486	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
487	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
488	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
489	<	suite.addTest(new TestSuite(SemaphoreTest.class));
490	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
491	<	suite.addTest(new TestSuite(SystemTest.class));
492	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
493	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
494	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
495	<	suite.addTest(new TestSuite(ThreadTest.class));
496	<	suite.addTest(new TestSuite(TimeUnitTest.class));
497	<	suite.addTest(new TestSuite(TreeMapTest.class));
498	<	suite.addTest(new TestSuite(TreeSetTest.class));
499	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
500	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
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	>	ArrayListTest.suite(),
451	>	AtomicBooleanTest.suite(),
452	>	AtomicIntegerArrayTest.suite(),
453	>	AtomicIntegerFieldUpdaterTest.suite(),
454	>	AtomicIntegerTest.suite(),
455	>	AtomicLongArrayTest.suite(),
456	>	AtomicLongFieldUpdaterTest.suite(),
457	>	AtomicLongTest.suite(),
458	>	AtomicMarkableReferenceTest.suite(),
459	>	AtomicReferenceArrayTest.suite(),
460	>	AtomicReferenceFieldUpdaterTest.suite(),
461	>	AtomicReferenceTest.suite(),
462	>	AtomicStampedReferenceTest.suite(),
463	>	ConcurrentHashMapTest.suite(),
464	>	ConcurrentLinkedDequeTest.suite(),
465	>	ConcurrentLinkedQueueTest.suite(),
466	>	ConcurrentSkipListMapTest.suite(),
467	>	ConcurrentSkipListSubMapTest.suite(),
468	>	ConcurrentSkipListSetTest.suite(),
469	>	ConcurrentSkipListSubSetTest.suite(),
470	>	CopyOnWriteArrayListTest.suite(),
471	>	CopyOnWriteArraySetTest.suite(),
472	>	CountDownLatchTest.suite(),
473	>	CountedCompleterTest.suite(),
474	>	CyclicBarrierTest.suite(),
475	>	DelayQueueTest.suite(),
476	>	EntryTest.suite(),
477	>	ExchangerTest.suite(),
478	>	ExecutorsTest.suite(),
479	>	ExecutorCompletionServiceTest.suite(),
480	>	FutureTaskTest.suite(),
481	>	LinkedBlockingDequeTest.suite(),
482	>	LinkedBlockingQueueTest.suite(),
483	>	LinkedListTest.suite(),
484	>	LockSupportTest.suite(),
485	>	PriorityBlockingQueueTest.suite(),
486	>	PriorityQueueTest.suite(),
487	>	ReentrantLockTest.suite(),
488	>	ReentrantReadWriteLockTest.suite(),
489	>	ScheduledExecutorTest.suite(),
490	>	ScheduledExecutorSubclassTest.suite(),
491	>	SemaphoreTest.suite(),
492	>	SynchronousQueueTest.suite(),
493	>	SystemTest.suite(),
494	>	ThreadLocalTest.suite(),
495	>	ThreadPoolExecutorTest.suite(),
496	>	ThreadPoolExecutorSubclassTest.suite(),
497	>	ThreadTest.suite(),
498	>	TimeUnitTest.suite(),
499	>	TreeMapTest.suite(),
500	>	TreeSetTest.suite(),
501	>	TreeSubMapTest.suite(),
502	>	TreeSubSetTest.suite());
503	>
504	>	// Java8+ test classes
505	>	if (atLeastJava8()) {
506	>	String[] java8TestClassNames = {
507	>	"Atomic8Test",
508	>	"CompletableFutureTest",
509	>	"ConcurrentHashMap8Test",
510	>	"CountedCompleter8Test",
511	>	"DoubleAccumulatorTest",
512	>	"DoubleAdderTest",
513	>	"ForkJoinPool8Test",
514	>	"ForkJoinTask8Test",
515	>	"LongAccumulatorTest",
516	>	"LongAdderTest",
517	>	"SplittableRandomTest",
518	>	"StampedLockTest",
519	>	"SubmissionPublisherTest",
520	>	"ThreadLocalRandom8Test",
521	>	"TimeUnit8Test",
522	>	};
523	>	addNamedTestClasses(suite, java8TestClassNames);
524	>	}
525	>
526	>	// Java9+ test classes
527	>	if (atLeastJava9()) {
528	>	String[] java9TestClassNames = {
529	>	"AtomicBoolean9Test",
530	>	"AtomicInteger9Test",
531	>	"AtomicIntegerArray9Test",
532	>	"AtomicLong9Test",
533	>	"AtomicLongArray9Test",
534	>	"AtomicReference9Test",
535	>	"AtomicReferenceArray9Test",
536	>	"ExecutorCompletionService9Test",
537	>	};
538	>	addNamedTestClasses(suite, java9TestClassNames);
539	>	}
540
541		return suite;
542		}
543
544	+	/** Returns list of junit-style test method names in given class. */
545	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
546	+	Method[] methods = testClass.getDeclaredMethods();
547	+	ArrayList<String> names = new ArrayList<String>(methods.length);
548	+	for (Method method : methods) {
549	+	if (method.getName().startsWith("test")
550	+	&& Modifier.isPublic(method.getModifiers())
551	+	// method.getParameterCount() requires jdk8+
552	+	&& method.getParameterTypes().length == 0) {
553	+	names.add(method.getName());
554	+	}
555	+	}
556	+	return names;
557	+	}
558	+
559	+	/**
560	+	* Returns junit-style testSuite for the given test class, but
561	+	* parameterized by passing extra data to each test.
562	+	*/
563	+	public static <ExtraData> Test parameterizedTestSuite
564	+	(Class<? extends JSR166TestCase> testClass,
565	+	Class<ExtraData> dataClass,
566	+	ExtraData data) {
567	+	try {
568	+	TestSuite suite = new TestSuite();
569	+	Constructor c =
570	+	testClass.getDeclaredConstructor(dataClass, String.class);
571	+	for (String methodName : testMethodNames(testClass))
572	+	suite.addTest((Test) c.newInstance(data, methodName));
573	+	return suite;
574	+	} catch (Exception e) {
575	+	throw new Error(e);
576	+	}
577	+	}
578	+
579	+	/**
580	+	* Returns junit-style testSuite for the jdk8 extension of the
581	+	* given test class, but parameterized by passing extra data to
582	+	* each test.  Uses reflection to allow compilation in jdk7.
583	+	*/
584	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
585	+	(Class<? extends JSR166TestCase> testClass,
586	+	Class<ExtraData> dataClass,
587	+	ExtraData data) {
588	+	if (atLeastJava8()) {
589	+	String name = testClass.getName();
590	+	String name8 = name.replaceAll("Test$", "8Test");
591	+	if (name.equals(name8)) throw new Error(name);
592	+	try {
593	+	return (Test)
594	+	Class.forName(name8)
595	+	.getMethod("testSuite", new Class[] { dataClass })
596	+	.invoke(null, data);
597	+	} catch (Exception e) {
598	+	throw new Error(e);
599	+	}
600	+	} else {
601	+	return new TestSuite();
602	+	}
603	+	}
604	+
605	+	// Delays for timing-dependent tests, in milliseconds.
606
607		public static long SHORT_DELAY_MS;
608		public static long SMALL_DELAY_MS;
609		public static long MEDIUM_DELAY_MS;
610		public static long LONG_DELAY_MS;
611
194	–
612		/**
613	<	* Returns the shortest timed delay. This could
614	<	* be reimplemented to use for example a Property.
613	>	* Returns the shortest timed delay. This can be scaled up for
614	>	* slow machines using the jsr166.delay.factor system property,
615	>	* or via jtreg's -timeoutFactor: flag.
616	>	* http://openjdk.java.net/jtreg/command-help.html
617		*/
618		protected long getShortDelay() {
619	<	return 50;
619	>	return (long) (50 * delayFactor);
620		}
621
203	–
622		/**
623		* Sets delays as multiples of SHORT_DELAY.
624		*/
625		protected void setDelays() {
626		SHORT_DELAY_MS = getShortDelay();
627	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
627	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
628		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
629	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
629	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
630	>	}
631	>
632	>	/**
633	>	* Returns a timeout in milliseconds to be used in tests that
634	>	* verify that operations block or time out.
635	>	*/
636	>	long timeoutMillis() {
637	>	return SHORT_DELAY_MS / 4;
638		}
639
640		/**
641	<	* Flag set true if any threadAssert methods fail
641	>	* Returns a new Date instance representing a time at least
642	>	* delayMillis milliseconds in the future.
643		*/
644	<	volatile boolean threadFailed;
644	>	Date delayedDate(long delayMillis) {
645	>	// Add 1 because currentTimeMillis is known to round into the past.
646	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
647	>	}
648
649		/**
650	<	* Initializes test to indicate that no thread assertions have failed
650	>	* The first exception encountered if any threadAssertXXX method fails.
651		*/
652	+	private final AtomicReference<Throwable> threadFailure
653	+	= new AtomicReference<Throwable>(null);
654	+
655	+	/**
656	+	* Records an exception so that it can be rethrown later in the test
657	+	* harness thread, triggering a test case failure.  Only the first
658	+	* failure is recorded; subsequent calls to this method from within
659	+	* the same test have no effect.
660	+	*/
661	+	public void threadRecordFailure(Throwable t) {
662	+	System.err.println(t);
663	+	dumpTestThreads();
664	+	threadFailure.compareAndSet(null, t);
665	+	}
666	+
667		public void setUp() {
668		setDelays();
669	<	threadFailed = false;
669	>	}
670	>
671	>	void tearDownFail(String format, Object... args) {
672	>	String msg = toString() + ": " + String.format(format, args);
673	>	System.err.println(msg);
674	>	dumpTestThreads();
675	>	throw new AssertionFailedError(msg);
676		}
677
678		/**
679	<	* Triggers test case failure if any thread assertions have failed
679	>	* Extra checks that get done for all test cases.
680	>	*
681	>	* Triggers test case failure if any thread assertions have failed,
682	>	* by rethrowing, in the test harness thread, any exception recorded
683	>	* earlier by threadRecordFailure.
684	>	*
685	>	* Triggers test case failure if interrupt status is set in the main thread.
686	>	*/
687	>	public void tearDown() throws Exception {
688	>	Throwable t = threadFailure.getAndSet(null);
689	>	if (t != null) {
690	>	if (t instanceof Error)
691	>	throw (Error) t;
692	>	else if (t instanceof RuntimeException)
693	>	throw (RuntimeException) t;
694	>	else if (t instanceof Exception)
695	>	throw (Exception) t;
696	>	else {
697	>	AssertionFailedError afe =
698	>	new AssertionFailedError(t.toString());
699	>	afe.initCause(t);
700	>	throw afe;
701	>	}
702	>	}
703	>
704	>	if (Thread.interrupted())
705	>	tearDownFail("interrupt status set in main thread");
706	>
707	>	checkForkJoinPoolThreadLeaks();
708	>	}
709	>
710	>	/**
711	>	* Finds missing PoolCleaners
712		*/
713	<	public void tearDown() {
714	<	assertFalse(threadFailed);
713	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
714	>	Thread[] survivors = new Thread[7];
715	>	int count = Thread.enumerate(survivors);
716	>	for (int i = 0; i < count; i++) {
717	>	Thread thread = survivors[i];
718	>	String name = thread.getName();
719	>	if (name.startsWith("ForkJoinPool-")) {
720	>	// give thread some time to terminate
721	>	thread.join(LONG_DELAY_MS);
722	>	if (thread.isAlive())
723	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
724	>	thread);
725	>	}
726	>	}
727	>
728	>	if (!ForkJoinPool.commonPool()
729	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
730	>	tearDownFail("ForkJoin common pool thread stuck");
731		}
732
733		/**
734	<	* Fail, also setting status to indicate current testcase should fail
734	>	* Just like fail(reason), but additionally recording (using
735	>	* threadRecordFailure) any AssertionFailedError thrown, so that
736	>	* the current testcase will fail.
737		*/
738		public void threadFail(String reason) {
739	<	threadFailed = true;
740	<	fail(reason);
739	>	try {
740	>	fail(reason);
741	>	} catch (AssertionFailedError t) {
742	>	threadRecordFailure(t);
743	>	throw t;
744	>	}
745		}
746
747		/**
748	<	* If expression not true, set status to indicate current testcase
749	<	* should fail
748	>	* Just like assertTrue(b), but additionally recording (using
749	>	* threadRecordFailure) any AssertionFailedError thrown, so that
750	>	* the current testcase will fail.
751		*/
752		public void threadAssertTrue(boolean b) {
753	<	if (!b) {
248	<	threadFailed = true;
753	>	try {
754		assertTrue(b);
755	+	} catch (AssertionFailedError t) {
756	+	threadRecordFailure(t);
757	+	throw t;
758		}
759		}
760
761		/**
762	<	* If expression not false, set status to indicate current testcase
763	<	* should fail
762	>	* Just like assertFalse(b), but additionally recording (using
763	>	* threadRecordFailure) any AssertionFailedError thrown, so that
764	>	* the current testcase will fail.
765		*/
766		public void threadAssertFalse(boolean b) {
767	<	if (b) {
259	<	threadFailed = true;
767	>	try {
768		assertFalse(b);
769	+	} catch (AssertionFailedError t) {
770	+	threadRecordFailure(t);
771	+	throw t;
772		}
773		}
774
775		/**
776	<	* If argument not null, set status to indicate current testcase
777	<	* should fail
776	>	* Just like assertNull(x), but additionally recording (using
777	>	* threadRecordFailure) any AssertionFailedError thrown, so that
778	>	* the current testcase will fail.
779		*/
780		public void threadAssertNull(Object x) {
781	<	if (x != null) {
270	<	threadFailed = true;
781	>	try {
782		assertNull(x);
783	+	} catch (AssertionFailedError t) {
784	+	threadRecordFailure(t);
785	+	throw t;
786		}
787		}
788
789		/**
790	<	* If arguments not equal, set status to indicate current testcase
791	<	* should fail
790	>	* Just like assertEquals(x, y), but additionally recording (using
791	>	* threadRecordFailure) any AssertionFailedError thrown, so that
792	>	* the current testcase will fail.
793		*/
794		public void threadAssertEquals(long x, long y) {
795	<	if (x != y) {
281	<	threadFailed = true;
795	>	try {
796		assertEquals(x, y);
797	+	} catch (AssertionFailedError t) {
798	+	threadRecordFailure(t);
799	+	throw t;
800		}
801		}
802
803		/**
804	<	* If arguments not equal, set status to indicate current testcase
805	<	* should fail
804	>	* Just like assertEquals(x, y), but additionally recording (using
805	>	* threadRecordFailure) any AssertionFailedError thrown, so that
806	>	* the current testcase will fail.
807		*/
808		public void threadAssertEquals(Object x, Object y) {
809	<	if (x != y && (x == null || !x.equals(y))) {
292	<	threadFailed = true;
809	>	try {
810		assertEquals(x, y);
811	+	} catch (AssertionFailedError fail) {
812	+	threadRecordFailure(fail);
813	+	throw fail;
814	+	} catch (Throwable fail) {
815	+	threadUnexpectedException(fail);
816		}
817		}
818
819		/**
820	<	* threadFail with message "should throw exception"
820	>	* Just like assertSame(x, y), but additionally recording (using
821	>	* threadRecordFailure) any AssertionFailedError thrown, so that
822	>	* the current testcase will fail.
823	>	*/
824	>	public void threadAssertSame(Object x, Object y) {
825	>	try {
826	>	assertSame(x, y);
827	>	} catch (AssertionFailedError fail) {
828	>	threadRecordFailure(fail);
829	>	throw fail;
830	>	}
831	>	}
832	>
833	>	/**
834	>	* Calls threadFail with message "should throw exception".
835		*/
836		public void threadShouldThrow() {
837	<	threadFailed = true;
302	<	fail("should throw exception");
837	>	threadFail("should throw exception");
838		}
839
840		/**
841	<	* threadFail with message "should throw" + exceptionName
841	>	* Calls threadFail with message "should throw" + exceptionName.
842		*/
843		public void threadShouldThrow(String exceptionName) {
844	<	threadFailed = true;
845	<	fail("should throw " + exceptionName);
844	>	threadFail("should throw " + exceptionName);
845	>	}
846	>
847	>	/**
848	>	* Records the given exception using {@link #threadRecordFailure},
849	>	* then rethrows the exception, wrapping it in an
850	>	* AssertionFailedError if necessary.
851	>	*/
852	>	public void threadUnexpectedException(Throwable t) {
853	>	threadRecordFailure(t);
854	>	t.printStackTrace();
855	>	if (t instanceof RuntimeException)
856	>	throw (RuntimeException) t;
857	>	else if (t instanceof Error)
858	>	throw (Error) t;
859	>	else {
860	>	AssertionFailedError afe =
861	>	new AssertionFailedError("unexpected exception: " + t);
862	>	afe.initCause(t);
863	>	throw afe;
864	>	}
865		}
866
867		/**
868	<	* threadFail with message "Unexpected exception"
868	>	* Delays, via Thread.sleep, for the given millisecond delay, but
869	>	* if the sleep is shorter than specified, may re-sleep or yield
870	>	* until time elapses.  Ensures that the given time, as measured
871	>	* by System.nanoTime(), has elapsed.
872		*/
873	<	public void threadUnexpectedException() {
874	<	threadFailed = true;
875	<	fail("Unexpected exception");
873	>	static void delay(long millis) throws InterruptedException {
874	>	long nanos = millis * (1000 * 1000);
875	>	final long wakeupTime = System.nanoTime() + nanos;
876	>	do {
877	>	if (millis > 0L)
878	>	Thread.sleep(millis);
879	>	else // too short to sleep
880	>	Thread.yield();
881	>	nanos = wakeupTime - System.nanoTime();
882	>	millis = nanos / (1000 * 1000);
883	>	} while (nanos >= 0L);
884		}
885
886		/**
887	<	* threadFail with message "Unexpected exception", with argument
887	>	* Allows use of try-with-resources with per-test thread pools.
888		*/
889	<	public void threadUnexpectedException(Throwable ex) {
890	<	threadFailed = true;
891	<	ex.printStackTrace();
892	<	fail("Unexpected exception: " + ex);
889	>	class PoolCleaner implements AutoCloseable {
890	>	private final ExecutorService pool;
891	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
892	>	public void close() { joinPool(pool); }
893	>	}
894	>
895	>	/**
896	>	* An extension of PoolCleaner that has an action to release the pool.
897	>	*/
898	>	class PoolCleanerWithReleaser extends PoolCleaner {
899	>	private final Runnable releaser;
900	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
901	>	super(pool);
902	>	this.releaser = releaser;
903	>	}
904	>	public void close() {
905	>	try {
906	>	releaser.run();
907	>	} finally {
908	>	super.close();
909	>	}
910	>	}
911	>	}
912	>
913	>	PoolCleaner cleaner(ExecutorService pool) {
914	>	return new PoolCleaner(pool);
915	>	}
916	>
917	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
918	>	return new PoolCleanerWithReleaser(pool, releaser);
919	>	}
920	>
921	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
922	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
923	>	}
924	>
925	>	Runnable releaser(final CountDownLatch latch) {
926	>	return new Runnable() { public void run() {
927	>	do { latch.countDown(); }
928	>	while (latch.getCount() > 0);
929	>	}};
930	>	}
931	>
932	>	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
933	>	return new PoolCleanerWithReleaser(pool, releaser(flag));
934	>	}
935	>
936	>	Runnable releaser(final AtomicBoolean flag) {
937	>	return new Runnable() { public void run() { flag.set(true); }};
938		}
939
940		/**
941	<	* Wait out termination of a thread pool or fail doing so
941	>	* Waits out termination of a thread pool or fails doing so.
942		*/
943	<	public void joinPool(ExecutorService exec) {
943	>	void joinPool(ExecutorService pool) {
944		try {
945	<	exec.shutdown();
946	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
945	>	pool.shutdown();
946	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
947	>	try {
948	>	threadFail("ExecutorService " + pool +
949	>	" did not terminate in a timely manner");
950	>	} finally {
951	>	// last resort, for the benefit of subsequent tests
952	>	pool.shutdownNow();
953	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
954	>	}
955	>	}
956		} catch (SecurityException ok) {
957		// Allowed in case test doesn't have privs
958	<	} catch (InterruptedException ie) {
959	<	fail("Unexpected InterruptedException");
958	>	} catch (InterruptedException fail) {
959	>	threadFail("Unexpected InterruptedException");
960		}
961		}
962
963	+	/**
964	+	* Like Runnable, but with the freedom to throw anything.
965	+	* junit folks had the same idea:
966	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
967	+	*/
968	+	interface Action { public void run() throws Throwable; }
969
970		/**
971	<	* fail with message "should throw exception"
971	>	* Runs all the given actions in parallel, failing if any fail.
972	>	* Useful for running multiple variants of tests that are
973	>	* necessarily individually slow because they must block.
974		*/
975	<	public void shouldThrow() {
976	<	fail("Should throw exception");
975	>	void testInParallel(Action ... actions) {
976	>	ExecutorService pool = Executors.newCachedThreadPool();
977	>	try (PoolCleaner cleaner = cleaner(pool)) {
978	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
979	>	for (final Action action : actions)
980	>	futures.add(pool.submit(new CheckedRunnable() {
981	>	public void realRun() throws Throwable { action.run();}}));
982	>	for (Future<?> future : futures)
983	>	try {
984	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
985	>	} catch (ExecutionException ex) {
986	>	threadUnexpectedException(ex.getCause());
987	>	} catch (Exception ex) {
988	>	threadUnexpectedException(ex);
989	>	}
990	>	}
991		}
992
993		/**
994	<	* fail with message "should throw " + exceptionName
994	>	* A debugging tool to print stack traces of most threads, as jstack does.
995	>	* Uninteresting threads are filtered out.
996		*/
997	<	public void shouldThrow(String exceptionName) {
998	<	fail("Should throw " + exceptionName);
997	>	static void dumpTestThreads() {
998	>	SecurityManager sm = System.getSecurityManager();
999	>	if (sm != null) {
1000	>	try {
1001	>	System.setSecurityManager(null);
1002	>	} catch (SecurityException giveUp) {
1003	>	return;
1004	>	}
1005	>	}
1006	>
1007	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1008	>	System.err.println("------ stacktrace dump start ------");
1009	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1010	>	final String name = info.getThreadName();
1011	>	String lockName;
1012	>	if ("Signal Dispatcher".equals(name))
1013	>	continue;
1014	>	if ("Reference Handler".equals(name)
1015	>	&& (lockName = info.getLockName()) != null
1016	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1017	>	continue;
1018	>	if ("Finalizer".equals(name)
1019	>	&& (lockName = info.getLockName()) != null
1020	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1021	>	continue;
1022	>	if ("checkForWedgedTest".equals(name))
1023	>	continue;
1024	>	System.err.print(info);
1025	>	}
1026	>	System.err.println("------ stacktrace dump end ------");
1027	>
1028	>	if (sm != null) System.setSecurityManager(sm);
1029	>	}
1030	>
1031	>	/**
1032	>	* Checks that thread does not terminate within the default
1033	>	* millisecond delay of {@code timeoutMillis()}.
1034	>	*/
1035	>	void assertThreadStaysAlive(Thread thread) {
1036	>	assertThreadStaysAlive(thread, timeoutMillis());
1037	>	}
1038	>
1039	>	/**
1040	>	* Checks that thread does not terminate within the given millisecond delay.
1041	>	*/
1042	>	void assertThreadStaysAlive(Thread thread, long millis) {
1043	>	try {
1044	>	// No need to optimize the failing case via Thread.join.
1045	>	delay(millis);
1046	>	assertTrue(thread.isAlive());
1047	>	} catch (InterruptedException fail) {
1048	>	threadFail("Unexpected InterruptedException");
1049	>	}
1050	>	}
1051	>
1052	>	/**
1053	>	* Checks that the threads do not terminate within the default
1054	>	* millisecond delay of {@code timeoutMillis()}.
1055	>	*/
1056	>	void assertThreadsStayAlive(Thread... threads) {
1057	>	assertThreadsStayAlive(timeoutMillis(), threads);
1058		}
1059
1060		/**
1061	<	* fail with message "Unexpected exception"
1061	>	* Checks that the threads do not terminate within the given millisecond delay.
1062		*/
1063	<	public void unexpectedException() {
1064	<	fail("Unexpected exception");
1063	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1064	>	try {
1065	>	// No need to optimize the failing case via Thread.join.
1066	>	delay(millis);
1067	>	for (Thread thread : threads)
1068	>	assertTrue(thread.isAlive());
1069	>	} catch (InterruptedException fail) {
1070	>	threadFail("Unexpected InterruptedException");
1071	>	}
1072		}
1073
1074		/**
1075	<	* fail with message "Unexpected exception", with argument
1075	>	* Checks that future.get times out, with the default timeout of
1076	>	* {@code timeoutMillis()}.
1077		*/
1078	<	public void unexpectedException(Throwable ex) {
1079	<	ex.printStackTrace();
371	<	fail("Unexpected exception: " + ex);
1078	>	void assertFutureTimesOut(Future future) {
1079	>	assertFutureTimesOut(future, timeoutMillis());
1080		}
1081
1082	+	/**
1083	+	* Checks that future.get times out, with the given millisecond timeout.
1084	+	*/
1085	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1086	+	long startTime = System.nanoTime();
1087	+	try {
1088	+	future.get(timeoutMillis, MILLISECONDS);
1089	+	shouldThrow();
1090	+	} catch (TimeoutException success) {
1091	+	} catch (Exception fail) {
1092	+	threadUnexpectedException(fail);
1093	+	} finally { future.cancel(true); }
1094	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1095	+	}
1096	+
1097	+	/**
1098	+	* Fails with message "should throw exception".
1099	+	*/
1100	+	public void shouldThrow() {
1101	+	fail("Should throw exception");
1102	+	}
1103	+
1104	+	/**
1105	+	* Fails with message "should throw " + exceptionName.
1106	+	*/
1107	+	public void shouldThrow(String exceptionName) {
1108	+	fail("Should throw " + exceptionName);
1109	+	}
1110
1111		/**
1112		* The number of elements to place in collections, arrays, etc.
#	Line 397 | Line 1133 | public class JSR166TestCase extends Test
1133		public static final Integer m6  = new Integer(-6);
1134		public static final Integer m10 = new Integer(-10);
1135
400	–
1136		/**
1137		* Runs Runnable r with a security policy that permits precisely
1138		* the specified permissions.  If there is no current security
#	Line 409 | Line 1144 | public class JSR166TestCase extends Test
1144		SecurityManager sm = System.getSecurityManager();
1145		if (sm == null) {
1146		r.run();
1147	+	}
1148	+	runWithSecurityManagerWithPermissions(r, permissions);
1149	+	}
1150	+
1151	+	/**
1152	+	* Runs Runnable r with a security policy that permits precisely
1153	+	* the specified permissions.  If there is no current security
1154	+	* manager, a temporary one is set for the duration of the
1155	+	* Runnable.  We require that any security manager permit
1156	+	* getPolicy/setPolicy.
1157	+	*/
1158	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1159	+	Permission... permissions) {
1160	+	SecurityManager sm = System.getSecurityManager();
1161	+	if (sm == null) {
1162		Policy savedPolicy = Policy.getPolicy();
1163		try {
1164		Policy.setPolicy(permissivePolicy());
1165		System.setSecurityManager(new SecurityManager());
1166	<	runWithPermissions(r, permissions);
1166	>	runWithSecurityManagerWithPermissions(r, permissions);
1167		} finally {
1168		System.setSecurityManager(null);
1169		Policy.setPolicy(savedPolicy);
#	Line 461 | Line 1211 | public class JSR166TestCase extends Test
1211		return perms.implies(p);
1212		}
1213		public void refresh() {}
1214	+	public String toString() {
1215	+	List<Permission> ps = new ArrayList<Permission>();
1216	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1217	+	ps.add(e.nextElement());
1218	+	return "AdjustablePolicy with permissions " + ps;
1219	+	}
1220		}
1221
1222		/**
#	Line 483 | Line 1239 | public class JSR166TestCase extends Test
1239		}
1240
1241		/**
1242	<	* Sleep until the timeout has elapsed, or interrupted.
1243	<	* Does <em>NOT</em> throw InterruptedException.
1242	>	* Sleeps until the given time has elapsed.
1243	>	* Throws AssertionFailedError if interrupted.
1244		*/
1245	<	void sleepTillInterrupted(long timeoutMillis) {
1245	>	static void sleep(long millis) {
1246		try {
1247	<	Thread.sleep(timeoutMillis);
1248	<	} catch (InterruptedException wakeup) {}
1247	>	delay(millis);
1248	>	} catch (InterruptedException fail) {
1249	>	AssertionFailedError afe =
1250	>	new AssertionFailedError("Unexpected InterruptedException");
1251	>	afe.initCause(fail);
1252	>	throw afe;
1253	>	}
1254	>	}
1255	>
1256	>	/**
1257	>	* Spin-waits up to the specified number of milliseconds for the given
1258	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1259	>	*/
1260	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1261	>	long startTime = 0L;
1262	>	for (;;) {
1263	>	Thread.State s = thread.getState();
1264	>	if (s == Thread.State.BLOCKED ||
1265	>	s == Thread.State.WAITING ||
1266	>	s == Thread.State.TIMED_WAITING)
1267	>	return;
1268	>	else if (s == Thread.State.TERMINATED)
1269	>	fail("Unexpected thread termination");
1270	>	else if (startTime == 0L)
1271	>	startTime = System.nanoTime();
1272	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1273	>	threadAssertTrue(thread.isAlive());
1274	>	return;
1275	>	}
1276	>	Thread.yield();
1277	>	}
1278	>	}
1279	>
1280	>	/**
1281	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1282	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1283	>	*/
1284	>	void waitForThreadToEnterWaitState(Thread thread) {
1285	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1286		}
1287
1288		/**
1289	<	* Returns a new started Thread running the given runnable.
1289	>	* Returns the number of milliseconds since time given by
1290	>	* startNanoTime, which must have been previously returned from a
1291	>	* call to {@link System#nanoTime()}.
1292	>	*/
1293	>	static long millisElapsedSince(long startNanoTime) {
1294	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1295	>	}
1296	>
1297	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1298	>	//         long startTime = System.nanoTime();
1299	>	//         try {
1300	>	//             r.run();
1301	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1302	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1303	>	//             throw new AssertionFailedError("did not return promptly");
1304	>	//     }
1305	>
1306	>	//     void assertTerminatesPromptly(Runnable r) {
1307	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1308	>	//     }
1309	>
1310	>	/**
1311	>	* Checks that timed f.get() returns the expected value, and does not
1312	>	* wait for the timeout to elapse before returning.
1313	>	*/
1314	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1315	>	long startTime = System.nanoTime();
1316	>	try {
1317	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1318	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1319	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1320	>	throw new AssertionFailedError("timed get did not return promptly");
1321	>	}
1322	>
1323	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1324	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1325	>	}
1326	>
1327	>	/**
1328	>	* Returns a new started daemon Thread running the given runnable.
1329		*/
1330		Thread newStartedThread(Runnable runnable) {
1331		Thread t = new Thread(runnable);
1332	+	t.setDaemon(true);
1333		t.start();
1334		return t;
1335		}
1336
1337	+	/**
1338	+	* Waits for the specified time (in milliseconds) for the thread
1339	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1340	+	* the thread (in the hope that it may terminate later) and fails.
1341	+	*/
1342	+	void awaitTermination(Thread t, long timeoutMillis) {
1343	+	try {
1344	+	t.join(timeoutMillis);
1345	+	} catch (InterruptedException fail) {
1346	+	threadUnexpectedException(fail);
1347	+	} finally {
1348	+	if (t.getState() != Thread.State.TERMINATED) {
1349	+	t.interrupt();
1350	+	threadFail("timed out waiting for thread to terminate");
1351	+	}
1352	+	}
1353	+	}
1354	+
1355	+	/**
1356	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1357	+	* terminate (using {@link Thread#join(long)}), else interrupts
1358	+	* the thread (in the hope that it may terminate later) and fails.
1359	+	*/
1360	+	void awaitTermination(Thread t) {
1361	+	awaitTermination(t, LONG_DELAY_MS);
1362	+	}
1363	+
1364		// Some convenient Runnable classes
1365
1366		public abstract class CheckedRunnable implements Runnable {
#	Line 509 | Line 1369 | public class JSR166TestCase extends Test
1369		public final void run() {
1370		try {
1371		realRun();
1372	<	} catch (Throwable t) {
1373	<	threadUnexpectedException(t);
1372	>	} catch (Throwable fail) {
1373	>	threadUnexpectedException(fail);
1374		}
1375		}
1376		}
#	Line 563 | Line 1423 | public class JSR166TestCase extends Test
1423		realRun();
1424		threadShouldThrow("InterruptedException");
1425		} catch (InterruptedException success) {
1426	<	} catch (Throwable t) {
1427	<	threadUnexpectedException(t);
1426	>	threadAssertFalse(Thread.interrupted());
1427	>	} catch (Throwable fail) {
1428	>	threadUnexpectedException(fail);
1429		}
1430		}
1431		}
#	Line 575 | Line 1436 | public class JSR166TestCase extends Test
1436		public final T call() {
1437		try {
1438		return realCall();
1439	<	} catch (Throwable t) {
1440	<	threadUnexpectedException(t);
1439	>	} catch (Throwable fail) {
1440	>	threadUnexpectedException(fail);
1441	>	return null;
1442		}
581	–	return null;
1443		}
1444		}
1445
1446	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
1446	>	public abstract class CheckedInterruptedCallable<T>
1447	>	implements Callable<T> {
1448		protected abstract T realCall() throws Throwable;
1449
1450		public final T call() {
#	Line 591 | Line 1453 | public class JSR166TestCase extends Test
1453		threadShouldThrow("InterruptedException");
1454		return result;
1455		} catch (InterruptedException success) {
1456	<	} catch (Throwable t) {
1457	<	threadUnexpectedException(t);
1456	>	threadAssertFalse(Thread.interrupted());
1457	>	} catch (Throwable fail) {
1458	>	threadUnexpectedException(fail);
1459		}
1460		return null;
1461		}
#	Line 609 | Line 1472 | public class JSR166TestCase extends Test
1472		public static final String TEST_STRING = "a test string";
1473
1474		public static class StringTask implements Callable<String> {
1475	<	public String call() { return TEST_STRING; }
1475	>	final String value;
1476	>	public StringTask() { this(TEST_STRING); }
1477	>	public StringTask(String value) { this.value = value; }
1478	>	public String call() { return value; }
1479		}
1480
1481		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1482		return new CheckedCallable<String>() {
1483	<	public String realCall() {
1483	>	protected String realCall() {
1484		try {
1485		latch.await();
1486		} catch (InterruptedException quittingTime) {}
#	Line 622 | Line 1488 | public class JSR166TestCase extends Test
1488		}};
1489		}
1490
1491	+	public Runnable countDowner(final CountDownLatch latch) {
1492	+	return new CheckedRunnable() {
1493	+	public void realRun() throws InterruptedException {
1494	+	latch.countDown();
1495	+	}};
1496	+	}
1497	+
1498	+	class LatchAwaiter extends CheckedRunnable {
1499	+	static final int NEW = 0;
1500	+	static final int RUNNING = 1;
1501	+	static final int DONE = 2;
1502	+	final CountDownLatch latch;
1503	+	int state = NEW;
1504	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1505	+	public void realRun() throws InterruptedException {
1506	+	state = 1;
1507	+	await(latch);
1508	+	state = 2;
1509	+	}
1510	+	}
1511	+
1512	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1513	+	return new LatchAwaiter(latch);
1514	+	}
1515	+
1516	+	public void await(CountDownLatch latch, long timeoutMillis) {
1517	+	try {
1518	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1519	+	fail("timed out waiting for CountDownLatch for "
1520	+	+ (timeoutMillis/1000) + " sec");
1521	+	} catch (Throwable fail) {
1522	+	threadUnexpectedException(fail);
1523	+	}
1524	+	}
1525	+
1526	+	public void await(CountDownLatch latch) {
1527	+	await(latch, LONG_DELAY_MS);
1528	+	}
1529	+
1530	+	public void await(Semaphore semaphore) {
1531	+	try {
1532	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1533	+	fail("timed out waiting for Semaphore for "
1534	+	+ (LONG_DELAY_MS/1000) + " sec");
1535	+	} catch (Throwable fail) {
1536	+	threadUnexpectedException(fail);
1537	+	}
1538	+	}
1539	+
1540	+	//     /**
1541	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1542	+	//      */
1543	+	//     public void await(AtomicBoolean flag) {
1544	+	//         await(flag, LONG_DELAY_MS);
1545	+	//     }
1546	+
1547	+	//     /**
1548	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1549	+	//      */
1550	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1551	+	//         long startTime = System.nanoTime();
1552	+	//         while (!flag.get()) {
1553	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1554	+	//                 throw new AssertionFailedError("timed out");
1555	+	//             Thread.yield();
1556	+	//         }
1557	+	//     }
1558	+
1559		public static class NPETask implements Callable<String> {
1560		public String call() { throw new NullPointerException(); }
1561		}
#	Line 632 | Line 1566 | public class JSR166TestCase extends Test
1566
1567		public class ShortRunnable extends CheckedRunnable {
1568		protected void realRun() throws Throwable {
1569	<	Thread.sleep(SHORT_DELAY_MS);
1569	>	delay(SHORT_DELAY_MS);
1570		}
1571		}
1572
1573		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1574		protected void realRun() throws InterruptedException {
1575	<	Thread.sleep(SHORT_DELAY_MS);
1575	>	delay(SHORT_DELAY_MS);
1576		}
1577		}
1578
1579		public class SmallRunnable extends CheckedRunnable {
1580		protected void realRun() throws Throwable {
1581	<	Thread.sleep(SMALL_DELAY_MS);
1581	>	delay(SMALL_DELAY_MS);
1582		}
1583		}
1584
1585		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1586		protected void realRun() {
1587		try {
1588	<	Thread.sleep(SMALL_DELAY_MS);
1588	>	delay(SMALL_DELAY_MS);
1589		} catch (InterruptedException ok) {}
1590		}
1591		}
1592
1593		public class SmallCallable extends CheckedCallable {
1594		protected Object realCall() throws InterruptedException {
1595	<	Thread.sleep(SMALL_DELAY_MS);
1595	>	delay(SMALL_DELAY_MS);
1596		return Boolean.TRUE;
1597		}
1598		}
1599
666	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
667	–	protected void realRun() throws InterruptedException {
668	–	Thread.sleep(SMALL_DELAY_MS);
669	–	}
670	–	}
671	–
1600		public class MediumRunnable extends CheckedRunnable {
1601		protected void realRun() throws Throwable {
1602	<	Thread.sleep(MEDIUM_DELAY_MS);
1602	>	delay(MEDIUM_DELAY_MS);
1603		}
1604		}
1605
1606		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1607		protected void realRun() throws InterruptedException {
1608	<	Thread.sleep(MEDIUM_DELAY_MS);
1608	>	delay(MEDIUM_DELAY_MS);
1609		}
1610		}
1611
1612	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1613	+	return new CheckedRunnable() {
1614	+	protected void realRun() {
1615	+	try {
1616	+	delay(timeoutMillis);
1617	+	} catch (InterruptedException ok) {}
1618	+	}};
1619	+	}
1620	+
1621		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1622		protected void realRun() {
1623		try {
1624	<	Thread.sleep(MEDIUM_DELAY_MS);
1624	>	delay(MEDIUM_DELAY_MS);
1625		} catch (InterruptedException ok) {}
1626		}
1627		}
#	Line 692 | Line 1629 | public class JSR166TestCase extends Test
1629		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1630		protected void realRun() {
1631		try {
1632	<	Thread.sleep(LONG_DELAY_MS);
1632	>	delay(LONG_DELAY_MS);
1633		} catch (InterruptedException ok) {}
1634		}
1635		}
#	Line 706 | Line 1643 | public class JSR166TestCase extends Test
1643		}
1644		}
1645
1646	+	public interface TrackedRunnable extends Runnable {
1647	+	boolean isDone();
1648	+	}
1649	+
1650	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1651	+	return new TrackedRunnable() {
1652	+	private volatile boolean done = false;
1653	+	public boolean isDone() { return done; }
1654	+	public void run() {
1655	+	try {
1656	+	delay(timeoutMillis);
1657	+	done = true;
1658	+	} catch (InterruptedException ok) {}
1659	+	}
1660	+	};
1661	+	}
1662	+
1663		public static class TrackedShortRunnable implements Runnable {
1664		public volatile boolean done = false;
1665		public void run() {
1666		try {
1667	<	Thread.sleep(SMALL_DELAY_MS);
1667	>	delay(SHORT_DELAY_MS);
1668	>	done = true;
1669	>	} catch (InterruptedException ok) {}
1670	>	}
1671	>	}
1672	>
1673	>	public static class TrackedSmallRunnable implements Runnable {
1674	>	public volatile boolean done = false;
1675	>	public void run() {
1676	>	try {
1677	>	delay(SMALL_DELAY_MS);
1678		done = true;
1679		} catch (InterruptedException ok) {}
1680		}
#	Line 720 | Line 1684 | public class JSR166TestCase extends Test
1684		public volatile boolean done = false;
1685		public void run() {
1686		try {
1687	<	Thread.sleep(MEDIUM_DELAY_MS);
1687	>	delay(MEDIUM_DELAY_MS);
1688		done = true;
1689		} catch (InterruptedException ok) {}
1690		}
#	Line 730 | Line 1694 | public class JSR166TestCase extends Test
1694		public volatile boolean done = false;
1695		public void run() {
1696		try {
1697	<	Thread.sleep(LONG_DELAY_MS);
1697	>	delay(LONG_DELAY_MS);
1698		done = true;
1699		} catch (InterruptedException ok) {}
1700		}
#	Line 747 | Line 1711 | public class JSR166TestCase extends Test
1711		public volatile boolean done = false;
1712		public Object call() {
1713		try {
1714	<	Thread.sleep(SMALL_DELAY_MS);
1714	>	delay(SMALL_DELAY_MS);
1715		done = true;
1716		} catch (InterruptedException ok) {}
1717		return Boolean.TRUE;
1718		}
1719		}
1720
1721	+	/**
1722	+	* Analog of CheckedRunnable for RecursiveAction
1723	+	*/
1724	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1725	+	protected abstract void realCompute() throws Throwable;
1726	+
1727	+	@Override protected final void compute() {
1728	+	try {
1729	+	realCompute();
1730	+	} catch (Throwable fail) {
1731	+	threadUnexpectedException(fail);
1732	+	}
1733	+	}
1734	+	}
1735	+
1736	+	/**
1737	+	* Analog of CheckedCallable for RecursiveTask
1738	+	*/
1739	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1740	+	protected abstract T realCompute() throws Throwable;
1741	+
1742	+	@Override protected final T compute() {
1743	+	try {
1744	+	return realCompute();
1745	+	} catch (Throwable fail) {
1746	+	threadUnexpectedException(fail);
1747	+	return null;
1748	+	}
1749	+	}
1750	+	}
1751
1752		/**
1753		* For use as RejectedExecutionHandler in constructors
#	Line 763 | Line 1757 | public class JSR166TestCase extends Test
1757		ThreadPoolExecutor executor) {}
1758		}
1759
1760	+	/**
1761	+	* A CyclicBarrier that uses timed await and fails with
1762	+	* AssertionFailedErrors instead of throwing checked exceptions.
1763	+	*/
1764	+	public static class CheckedBarrier extends CyclicBarrier {
1765	+	public CheckedBarrier(int parties) { super(parties); }
1766	+
1767	+	public int await() {
1768	+	try {
1769	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1770	+	} catch (TimeoutException timedOut) {
1771	+	throw new AssertionFailedError("timed out");
1772	+	} catch (Exception fail) {
1773	+	AssertionFailedError afe =
1774	+	new AssertionFailedError("Unexpected exception: " + fail);
1775	+	afe.initCause(fail);
1776	+	throw afe;
1777	+	}
1778	+	}
1779	+	}
1780	+
1781	+	void checkEmpty(BlockingQueue q) {
1782	+	try {
1783	+	assertTrue(q.isEmpty());
1784	+	assertEquals(0, q.size());
1785	+	assertNull(q.peek());
1786	+	assertNull(q.poll());
1787	+	assertNull(q.poll(0, MILLISECONDS));
1788	+	assertEquals(q.toString(), "[]");
1789	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1790	+	assertFalse(q.iterator().hasNext());
1791	+	try {
1792	+	q.element();
1793	+	shouldThrow();
1794	+	} catch (NoSuchElementException success) {}
1795	+	try {
1796	+	q.iterator().next();
1797	+	shouldThrow();
1798	+	} catch (NoSuchElementException success) {}
1799	+	try {
1800	+	q.remove();
1801	+	shouldThrow();
1802	+	} catch (NoSuchElementException success) {}
1803	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1804	+	}
1805	+
1806	+	void assertSerialEquals(Object x, Object y) {
1807	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1808	+	}
1809	+
1810	+	void assertNotSerialEquals(Object x, Object y) {
1811	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1812	+	}
1813	+
1814	+	byte[] serialBytes(Object o) {
1815	+	try {
1816	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1817	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1818	+	oos.writeObject(o);
1819	+	oos.flush();
1820	+	oos.close();
1821	+	return bos.toByteArray();
1822	+	} catch (Throwable fail) {
1823	+	threadUnexpectedException(fail);
1824	+	return new byte[0];
1825	+	}
1826	+	}
1827	+
1828	+	@SuppressWarnings("unchecked")
1829	+	<T> T serialClone(T o) {
1830	+	try {
1831	+	ObjectInputStream ois = new ObjectInputStream
1832	+	(new ByteArrayInputStream(serialBytes(o)));
1833	+	T clone = (T) ois.readObject();
1834	+	assertSame(o.getClass(), clone.getClass());
1835	+	return clone;
1836	+	} catch (Throwable fail) {
1837	+	threadUnexpectedException(fail);
1838	+	return null;
1839	+	}
1840	+	}
1841	+
1842	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1843	+	Runnable... throwingActions) {
1844	+	for (Runnable throwingAction : throwingActions) {
1845	+	boolean threw = false;
1846	+	try { throwingAction.run(); }
1847	+	catch (Throwable t) {
1848	+	threw = true;
1849	+	if (!expectedExceptionClass.isInstance(t)) {
1850	+	AssertionFailedError afe =
1851	+	new AssertionFailedError
1852	+	("Expected " + expectedExceptionClass.getName() +
1853	+	", got " + t.getClass().getName());
1854	+	afe.initCause(t);
1855	+	threadUnexpectedException(afe);
1856	+	}
1857	+	}
1858	+	if (!threw)
1859	+	shouldThrow(expectedExceptionClass.getName());
1860	+	}
1861	+	}
1862	+
1863	+	public void assertIteratorExhausted(Iterator<?> it) {
1864	+	try {
1865	+	it.next();
1866	+	shouldThrow();
1867	+	} catch (NoSuchElementException success) {}
1868	+	assertFalse(it.hasNext());
1869	+	}
1870	+
1871	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1872	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1873	+	}
1874	+
1875	+	public Runnable runnableThrowing(final RuntimeException ex) {
1876	+	return new Runnable() { public void run() { throw ex; }};
1877	+	}
1878	+
1879	+	/** A reusable thread pool to be shared by tests. */
1880	+	static final ExecutorService cachedThreadPool =
1881	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1882	+	1000L, MILLISECONDS,
1883	+	new SynchronousQueue<Runnable>());
1884	+
1885	+	static <T> void shuffle(T[] array) {
1886	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1887	+	}
1888		}

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