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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.48 by jsr166, Tue Dec 1 22:51:44 2009 UTC vs.
Revision 1.182 by jsr166, Sun Jan 17 00:07:51 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	>	* @build *
13	>	* @run junit/othervm/timeout=1000 JSR166TestCase
14	>	*/
15	>
16		import static java.util.concurrent.TimeUnit.MILLISECONDS;
17	<	import java.io.*;
18	<	import java.security.*;
17	>	import static java.util.concurrent.TimeUnit.MINUTES;
18	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
19	>
20	>	import java.io.ByteArrayInputStream;
21	>	import java.io.ByteArrayOutputStream;
22	>	import java.io.ObjectInputStream;
23	>	import java.io.ObjectOutputStream;
24	>	import java.lang.management.ManagementFactory;
25	>	import java.lang.management.ThreadInfo;
26	>	import java.lang.management.ThreadMXBean;
27	>	import java.lang.reflect.Constructor;
28	>	import java.lang.reflect.Method;
29	>	import java.lang.reflect.Modifier;
30	>	import java.nio.file.Files;
31	>	import java.nio.file.Paths;
32	>	import java.security.CodeSource;
33	>	import java.security.Permission;
34	>	import java.security.PermissionCollection;
35	>	import java.security.Permissions;
36	>	import java.security.Policy;
37	>	import java.security.ProtectionDomain;
38	>	import java.security.SecurityPermission;
39	>	import java.util.ArrayList;
40	>	import java.util.Arrays;
41	>	import java.util.Date;
42	>	import java.util.Enumeration;
43	>	import java.util.Iterator;
44	>	import java.util.List;
45	>	import java.util.NoSuchElementException;
46	>	import java.util.PropertyPermission;
47	>	import java.util.concurrent.BlockingQueue;
48	>	import java.util.concurrent.Callable;
49	>	import java.util.concurrent.CountDownLatch;
50	>	import java.util.concurrent.CyclicBarrier;
51	>	import java.util.concurrent.ExecutionException;
52	>	import java.util.concurrent.Executors;
53	>	import java.util.concurrent.ExecutorService;
54	>	import java.util.concurrent.ForkJoinPool;
55	>	import java.util.concurrent.Future;
56	>	import java.util.concurrent.RecursiveAction;
57	>	import java.util.concurrent.RecursiveTask;
58	>	import java.util.concurrent.RejectedExecutionHandler;
59	>	import java.util.concurrent.Semaphore;
60	>	import java.util.concurrent.ThreadFactory;
61	>	import java.util.concurrent.ThreadPoolExecutor;
62	>	import java.util.concurrent.TimeoutException;
63	>	import java.util.concurrent.atomic.AtomicReference;
64	>	import java.util.regex.Matcher;
65	>	import java.util.regex.Pattern;
66	>
67	>	import junit.framework.AssertionFailedError;
68	>	import junit.framework.Test;
69	>	import junit.framework.TestCase;
70	>	import junit.framework.TestResult;
71	>	import junit.framework.TestSuite;
72
73		/**
74		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 23 | Line 80 | import java.security.*;
80		*
81		* <ol>
82		*
83	<	* <li> All assertions in code running in generated threads must use
83	>	* <li>All assertions in code running in generated threads must use
84		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
85		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
86	<	* <tt>fail</tt>, <tt>assertTrue</tt>, etc.) It is OK (but not
86	>	* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
87		* particularly recommended) for other code to use these forms too.
88		* Only the most typically used JUnit assertion methods are defined
89	<	* this way, but enough to live with.</li>
89	>	* this way, but enough to live with.
90		*
91	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
92	<	* to invoke <tt>super.setUp</tt> and <tt>super.tearDown</tt> within
91	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
92	>	* to invoke {@code super.setUp} and {@code super.tearDown} within
93		* them. These methods are used to clear and check for thread
94	<	* assertion failures.</li>
94	>	* assertion failures.
95		*
96	<	* <li>All delays and timeouts must use one of the constants <tt>
97	<	* SHORT_DELAY_MS</tt>, <tt> SMALL_DELAY_MS</tt>, <tt> MEDIUM_DELAY_MS</tt>,
98	<	* <tt> LONG_DELAY_MS</tt>. The idea here is that a SHORT is always
96	>	* <li>All delays and timeouts must use one of the constants {@code
97	>	* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
98	>	* {@code LONG_DELAY_MS}. The idea here is that a SHORT is always
99		* discriminable from zero time, and always allows enough time for the
100		* small amounts of computation (creating a thread, calling a few
101		* methods, etc) needed to reach a timeout point. Similarly, a SMALL
102		* is always discriminable as larger than SHORT and smaller than
103		* MEDIUM.  And so on. These constants are set to conservative values,
104		* but even so, if there is ever any doubt, they can all be increased
105	<	* in one spot to rerun tests on slower platforms.</li>
105	>	* in one spot to rerun tests on slower platforms.
106		*
107	<	* <li> All threads generated must be joined inside each test case
108	<	* method (or <tt>fail</tt> to do so) before returning from the
109	<	* method. The <tt> joinPool</tt> method can be used to do this when
110	<	* using Executors.</li>
107	>	* <li>All threads generated must be joined inside each test case
108	>	* method (or {@code fail} to do so) before returning from the
109	>	* method. The {@code joinPool} method can be used to do this when
110	>	* using Executors.
111		*
112		* </ol>
113		*
114	<	* <p> <b>Other notes</b>
114	>	* <p><b>Other notes</b>
115		* <ul>
116		*
117	<	* <li> Usually, there is one testcase method per JSR166 method
117	>	* <li>Usually, there is one testcase method per JSR166 method
118		* covering "normal" operation, and then as many exception-testing
119		* methods as there are exceptions the method can throw. Sometimes
120		* there are multiple tests per JSR166 method when the different
121		* "normal" behaviors differ significantly. And sometimes testcases
122	<	* cover multiple methods when they cannot be tested in
66	<	* isolation.</li>
122	>	* cover multiple methods when they cannot be tested in isolation.
123		*
124	<	* <li> The documentation style for testcases is to provide as javadoc
124	>	* <li>The documentation style for testcases is to provide as javadoc
125		* a simple sentence or two describing the property that the testcase
126		* method purports to test. The javadocs do not say anything about how
127	<	* the property is tested. To find out, read the code.</li>
127	>	* the property is tested. To find out, read the code.
128		*
129	<	* <li> These tests are "conformance tests", and do not attempt to
129	>	* <li>These tests are "conformance tests", and do not attempt to
130		* test throughput, latency, scalability or other performance factors
131		* (see the separate "jtreg" tests for a set intended to check these
132		* for the most central aspects of functionality.) So, most tests use
133		* the smallest sensible numbers of threads, collection sizes, etc
134	<	* needed to check basic conformance.</li>
134	>	* needed to check basic conformance.
135		*
136		* <li>The test classes currently do not declare inclusion in
137		* any particular package to simplify things for people integrating
138	<	* them in TCK test suites.</li>
138	>	* them in TCK test suites.
139		*
140	<	* <li> As a convenience, the <tt>main</tt> of this class (JSR166TestCase)
141	<	* runs all JSR166 unit tests.</li>
140	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
141	>	* runs all JSR166 unit tests.
142		*
143		* </ul>
144		*/
145		public class JSR166TestCase extends TestCase {
146	+	private static final boolean useSecurityManager =
147	+	Boolean.getBoolean("jsr166.useSecurityManager");
148	+
149	+	protected static final boolean expensiveTests =
150	+	Boolean.getBoolean("jsr166.expensiveTests");
151	+
152	+	/**
153	+	* If true, also run tests that are not part of the official tck
154	+	* because they test unspecified implementation details.
155	+	*/
156	+	protected static final boolean testImplementationDetails =
157	+	Boolean.getBoolean("jsr166.testImplementationDetails");
158	+
159	+	/**
160	+	* If true, report on stdout all "slow" tests, that is, ones that
161	+	* take more than profileThreshold milliseconds to execute.
162	+	*/
163	+	private static final boolean profileTests =
164	+	Boolean.getBoolean("jsr166.profileTests");
165	+
166	+	/**
167	+	* The number of milliseconds that tests are permitted for
168	+	* execution without being reported, when profileTests is set.
169	+	*/
170	+	private static final long profileThreshold =
171	+	Long.getLong("jsr166.profileThreshold", 100);
172	+
173	+	/**
174	+	* The number of repetitions per test (for tickling rare bugs).
175	+	*/
176	+	private static final int runsPerTest =
177	+	Integer.getInteger("jsr166.runsPerTest", 1);
178	+
179	+	/**
180	+	* The number of repetitions of the test suite (for finding leaks?).
181	+	*/
182	+	private static final int suiteRuns =
183	+	Integer.getInteger("jsr166.suiteRuns", 1);
184	+
185		/**
186	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
186	>	* The scaling factor to apply to standard delays used in tests.
187	>	*/
188	>	private static final int delayFactor =
189	>	Integer.getInteger("jsr166.delay.factor", 1);
190	>
191	>	public JSR166TestCase() { super(); }
192	>	public JSR166TestCase(String name) { super(name); }
193	>
194	>	/**
195	>	* A filter for tests to run, matching strings of the form
196	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
197	>	* Usefully combined with jsr166.runsPerTest.
198	>	*/
199	>	private static final Pattern methodFilter = methodFilter();
200	>
201	>	private static Pattern methodFilter() {
202	>	String regex = System.getProperty("jsr166.methodFilter");
203	>	return (regex == null) ? null : Pattern.compile(regex);
204	>	}
205	>
206	>	// Instrumentation to debug very rare, but very annoying hung test runs.
207	>	static volatile TestCase currentTestCase;
208	>	// static volatile int currentRun = 0;
209	>	static {
210	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
211	>	// Avoid spurious reports with enormous runsPerTest.
212	>	// A single test case run should never take more than 1 second.
213	>	// But let's cap it at the high end too ...
214	>	final int timeoutMinutes =
215	>	Math.min(15, Math.max(runsPerTest / 60, 1));
216	>	for (TestCase lastTestCase = currentTestCase;;) {
217	>	try { MINUTES.sleep(timeoutMinutes); }
218	>	catch (InterruptedException unexpected) { break; }
219	>	if (lastTestCase == currentTestCase) {
220	>	System.err.printf(
221	>	"Looks like we're stuck running test: %s%n",
222	>	lastTestCase);
223	>	//                     System.err.printf(
224	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
225	>	//                         lastTestCase, currentRun, runsPerTest);
226	>	//                     System.err.println("availableProcessors=" +
227	>	//                         Runtime.getRuntime().availableProcessors());
228	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
229	>	dumpTestThreads();
230	>	// one stack dump is probably enough; more would be spam
231	>	break;
232	>	}
233	>	lastTestCase = currentTestCase;
234	>	}}};
235	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
236	>	thread.setDaemon(true);
237	>	thread.start();
238	>	}
239	>
240	>	//     public static String cpuModel() {
241	>	//         try {
242	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
243	>	//                 .matcher(new String(
244	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
245	>	//             matcher.find();
246	>	//             return matcher.group(1);
247	>	//         } catch (Exception ex) { return null; }
248	>	//     }
249	>
250	>	public void runBare() throws Throwable {
251	>	currentTestCase = this;
252	>	if (methodFilter == null
253	>	|| methodFilter.matcher(toString()).find())
254	>	super.runBare();
255	>	}
256	>
257	>	protected void runTest() throws Throwable {
258	>	for (int i = 0; i < runsPerTest; i++) {
259	>	// currentRun = i;
260	>	if (profileTests)
261	>	runTestProfiled();
262	>	else
263	>	super.runTest();
264	>	}
265	>	}
266	>
267	>	protected void runTestProfiled() throws Throwable {
268	>	for (int i = 0; i < 2; i++) {
269	>	long startTime = System.nanoTime();
270	>	super.runTest();
271	>	long elapsedMillis = millisElapsedSince(startTime);
272	>	if (elapsedMillis < profileThreshold)
273	>	break;
274	>	// Never report first run of any test; treat it as a
275	>	// warmup run, notably to trigger all needed classloading,
276	>	if (i > 0)
277	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
278	>	}
279	>	}
280	>
281	>	/**
282	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
283		*/
284		public static void main(String[] args) {
285	<	int iters = 1;
286	<	if (args.length > 0)
287	<	iters = Integer.parseInt(args[0]);
288	<	Test s = suite();
289	<	for (int i = 0; i < iters; ++i) {
290	<	junit.textui.TestRunner.run(s);
285	>	main(suite(), args);
286	>	}
287	>
288	>	static class PithyResultPrinter extends junit.textui.ResultPrinter {
289	>	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
290	>	long runTime;
291	>	public void startTest(Test test) {}
292	>	protected void printHeader(long runTime) {
293	>	this.runTime = runTime; // defer printing for later
294	>	}
295	>	protected void printFooter(TestResult result) {
296	>	if (result.wasSuccessful()) {
297	>	getWriter().println("OK (" + result.runCount() + " tests)"
298	>	+ "  Time: " + elapsedTimeAsString(runTime));
299	>	} else {
300	>	getWriter().println("Time: " + elapsedTimeAsString(runTime));
301	>	super.printFooter(result);
302	>	}
303	>	}
304	>	}
305	>
306	>	/**
307	>	* Returns a TestRunner that doesn't bother with unnecessary
308	>	* fluff, like printing a "." for each test case.
309	>	*/
310	>	static junit.textui.TestRunner newPithyTestRunner() {
311	>	junit.textui.TestRunner runner = new junit.textui.TestRunner();
312	>	runner.setPrinter(new PithyResultPrinter(System.out));
313	>	return runner;
314	>	}
315	>
316	>	/**
317	>	* Runs all unit tests in the given test suite.
318	>	* Actual behavior influenced by jsr166.* system properties.
319	>	*/
320	>	static void main(Test suite, String[] args) {
321	>	if (useSecurityManager) {
322	>	System.err.println("Setting a permissive security manager");
323	>	Policy.setPolicy(permissivePolicy());
324	>	System.setSecurityManager(new SecurityManager());
325	>	}
326	>	for (int i = 0; i < suiteRuns; i++) {
327	>	TestResult result = newPithyTestRunner().doRun(suite);
328	>	if (!result.wasSuccessful())
329	>	System.exit(1);
330		System.gc();
331		System.runFinalization();
332		}
333	<	System.exit(0);
333	>	}
334	>
335	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
336	>	TestSuite suite = new TestSuite();
337	>	for (Object suiteOrClass : suiteOrClasses) {
338	>	if (suiteOrClass instanceof TestSuite)
339	>	suite.addTest((TestSuite) suiteOrClass);
340	>	else if (suiteOrClass instanceof Class)
341	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
342	>	else
343	>	throw new ClassCastException("not a test suite or class");
344	>	}
345	>	return suite;
346	>	}
347	>
348	>	public static void addNamedTestClasses(TestSuite suite,
349	>	String... testClassNames) {
350	>	for (String testClassName : testClassNames) {
351	>	try {
352	>	Class<?> testClass = Class.forName(testClassName);
353	>	Method m = testClass.getDeclaredMethod("suite",
354	>	new Class<?>[0]);
355	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
356	>	} catch (Exception e) {
357	>	throw new Error("Missing test class", e);
358	>	}
359	>	}
360	>	}
361	>
362	>	public static final double JAVA_CLASS_VERSION;
363	>	public static final String JAVA_SPECIFICATION_VERSION;
364	>	static {
365	>	try {
366	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
367	>	new java.security.PrivilegedAction<Double>() {
368	>	public Double run() {
369	>	return Double.valueOf(System.getProperty("java.class.version"));}});
370	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
371	>	new java.security.PrivilegedAction<String>() {
372	>	public String run() {
373	>	return System.getProperty("java.specification.version");}});
374	>	} catch (Throwable t) {
375	>	throw new Error(t);
376	>	}
377	>	}
378	>
379	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
380	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
381	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
382	>	public static boolean atLeastJava9() {
383	>	return JAVA_CLASS_VERSION >= 53.0
384	>	// As of 2015-09, java9 still uses 52.0 class file version
385	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
386	>	}
387	>	public static boolean atLeastJava10() {
388	>	return JAVA_CLASS_VERSION >= 54.0
389	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
390		}
391
392		/**
393	<	* Collects all JSR166 unit tests as one suite
393	>	* Collects all JSR166 unit tests as one suite.
394		*/
395		public static Test suite() {
396	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
397	<
398	<	suite.addTest(new TestSuite(ForkJoinPoolTest.class));
399	<	suite.addTest(new TestSuite(ForkJoinTaskTest.class));
400	<	suite.addTest(new TestSuite(RecursiveActionTest.class));
401	<	suite.addTest(new TestSuite(RecursiveTaskTest.class));
402	<	suite.addTest(new TestSuite(LinkedTransferQueueTest.class));
403	<	suite.addTest(new TestSuite(PhaserTest.class));
404	<	suite.addTest(new TestSuite(ThreadLocalRandomTest.class));
405	<	suite.addTest(new TestSuite(AbstractExecutorServiceTest.class));
406	<	suite.addTest(new TestSuite(AbstractQueueTest.class));
407	<	suite.addTest(new TestSuite(AbstractQueuedSynchronizerTest.class));
408	<	suite.addTest(new TestSuite(AbstractQueuedLongSynchronizerTest.class));
409	<	suite.addTest(new TestSuite(ArrayBlockingQueueTest.class));
410	<	suite.addTest(new TestSuite(ArrayDequeTest.class));
411	<	suite.addTest(new TestSuite(AtomicBooleanTest.class));
412	<	suite.addTest(new TestSuite(AtomicIntegerArrayTest.class));
413	<	suite.addTest(new TestSuite(AtomicIntegerFieldUpdaterTest.class));
414	<	suite.addTest(new TestSuite(AtomicIntegerTest.class));
415	<	suite.addTest(new TestSuite(AtomicLongArrayTest.class));
416	<	suite.addTest(new TestSuite(AtomicLongFieldUpdaterTest.class));
417	<	suite.addTest(new TestSuite(AtomicLongTest.class));
418	<	suite.addTest(new TestSuite(AtomicMarkableReferenceTest.class));
419	<	suite.addTest(new TestSuite(AtomicReferenceArrayTest.class));
420	<	suite.addTest(new TestSuite(AtomicReferenceFieldUpdaterTest.class));
421	<	suite.addTest(new TestSuite(AtomicReferenceTest.class));
422	<	suite.addTest(new TestSuite(AtomicStampedReferenceTest.class));
423	<	suite.addTest(new TestSuite(ConcurrentHashMapTest.class));
424	<	suite.addTest(new TestSuite(ConcurrentLinkedQueueTest.class));
425	<	suite.addTest(new TestSuite(ConcurrentSkipListMapTest.class));
426	<	suite.addTest(new TestSuite(ConcurrentSkipListSubMapTest.class));
427	<	suite.addTest(new TestSuite(ConcurrentSkipListSetTest.class));
428	<	suite.addTest(new TestSuite(ConcurrentSkipListSubSetTest.class));
429	<	suite.addTest(new TestSuite(CopyOnWriteArrayListTest.class));
430	<	suite.addTest(new TestSuite(CopyOnWriteArraySetTest.class));
431	<	suite.addTest(new TestSuite(CountDownLatchTest.class));
432	<	suite.addTest(new TestSuite(CyclicBarrierTest.class));
433	<	suite.addTest(new TestSuite(DelayQueueTest.class));
434	<	suite.addTest(new TestSuite(EntryTest.class));
435	<	suite.addTest(new TestSuite(ExchangerTest.class));
436	<	suite.addTest(new TestSuite(ExecutorsTest.class));
437	<	suite.addTest(new TestSuite(ExecutorCompletionServiceTest.class));
438	<	suite.addTest(new TestSuite(FutureTaskTest.class));
439	<	suite.addTest(new TestSuite(LinkedBlockingDequeTest.class));
440	<	suite.addTest(new TestSuite(LinkedBlockingQueueTest.class));
441	<	suite.addTest(new TestSuite(LinkedListTest.class));
442	<	suite.addTest(new TestSuite(LockSupportTest.class));
443	<	suite.addTest(new TestSuite(PriorityBlockingQueueTest.class));
444	<	suite.addTest(new TestSuite(PriorityQueueTest.class));
445	<	suite.addTest(new TestSuite(ReentrantLockTest.class));
446	<	suite.addTest(new TestSuite(ReentrantReadWriteLockTest.class));
447	<	suite.addTest(new TestSuite(ScheduledExecutorTest.class));
448	<	suite.addTest(new TestSuite(ScheduledExecutorSubclassTest.class));
449	<	suite.addTest(new TestSuite(SemaphoreTest.class));
450	<	suite.addTest(new TestSuite(SynchronousQueueTest.class));
451	<	suite.addTest(new TestSuite(SystemTest.class));
452	<	suite.addTest(new TestSuite(ThreadLocalTest.class));
453	<	suite.addTest(new TestSuite(ThreadPoolExecutorTest.class));
454	<	suite.addTest(new TestSuite(ThreadPoolExecutorSubclassTest.class));
455	<	suite.addTest(new TestSuite(ThreadTest.class));
456	<	suite.addTest(new TestSuite(TimeUnitTest.class));
457	<	suite.addTest(new TestSuite(TreeMapTest.class));
458	<	suite.addTest(new TestSuite(TreeSetTest.class));
459	<	suite.addTest(new TestSuite(TreeSubMapTest.class));
460	<	suite.addTest(new TestSuite(TreeSubSetTest.class));
396	>	// Java7+ test classes
397	>	TestSuite suite = newTestSuite(
398	>	ForkJoinPoolTest.suite(),
399	>	ForkJoinTaskTest.suite(),
400	>	RecursiveActionTest.suite(),
401	>	RecursiveTaskTest.suite(),
402	>	LinkedTransferQueueTest.suite(),
403	>	PhaserTest.suite(),
404	>	ThreadLocalRandomTest.suite(),
405	>	AbstractExecutorServiceTest.suite(),
406	>	AbstractQueueTest.suite(),
407	>	AbstractQueuedSynchronizerTest.suite(),
408	>	AbstractQueuedLongSynchronizerTest.suite(),
409	>	ArrayBlockingQueueTest.suite(),
410	>	ArrayDequeTest.suite(),
411	>	AtomicBooleanTest.suite(),
412	>	AtomicIntegerArrayTest.suite(),
413	>	AtomicIntegerFieldUpdaterTest.suite(),
414	>	AtomicIntegerTest.suite(),
415	>	AtomicLongArrayTest.suite(),
416	>	AtomicLongFieldUpdaterTest.suite(),
417	>	AtomicLongTest.suite(),
418	>	AtomicMarkableReferenceTest.suite(),
419	>	AtomicReferenceArrayTest.suite(),
420	>	AtomicReferenceFieldUpdaterTest.suite(),
421	>	AtomicReferenceTest.suite(),
422	>	AtomicStampedReferenceTest.suite(),
423	>	ConcurrentHashMapTest.suite(),
424	>	ConcurrentLinkedDequeTest.suite(),
425	>	ConcurrentLinkedQueueTest.suite(),
426	>	ConcurrentSkipListMapTest.suite(),
427	>	ConcurrentSkipListSubMapTest.suite(),
428	>	ConcurrentSkipListSetTest.suite(),
429	>	ConcurrentSkipListSubSetTest.suite(),
430	>	CopyOnWriteArrayListTest.suite(),
431	>	CopyOnWriteArraySetTest.suite(),
432	>	CountDownLatchTest.suite(),
433	>	CyclicBarrierTest.suite(),
434	>	DelayQueueTest.suite(),
435	>	EntryTest.suite(),
436	>	ExchangerTest.suite(),
437	>	ExecutorsTest.suite(),
438	>	ExecutorCompletionServiceTest.suite(),
439	>	FutureTaskTest.suite(),
440	>	LinkedBlockingDequeTest.suite(),
441	>	LinkedBlockingQueueTest.suite(),
442	>	LinkedListTest.suite(),
443	>	LockSupportTest.suite(),
444	>	PriorityBlockingQueueTest.suite(),
445	>	PriorityQueueTest.suite(),
446	>	ReentrantLockTest.suite(),
447	>	ReentrantReadWriteLockTest.suite(),
448	>	ScheduledExecutorTest.suite(),
449	>	ScheduledExecutorSubclassTest.suite(),
450	>	SemaphoreTest.suite(),
451	>	SynchronousQueueTest.suite(),
452	>	SystemTest.suite(),
453	>	ThreadLocalTest.suite(),
454	>	ThreadPoolExecutorTest.suite(),
455	>	ThreadPoolExecutorSubclassTest.suite(),
456	>	ThreadTest.suite(),
457	>	TimeUnitTest.suite(),
458	>	TreeMapTest.suite(),
459	>	TreeSetTest.suite(),
460	>	TreeSubMapTest.suite(),
461	>	TreeSubSetTest.suite());
462	>
463	>	// Java8+ test classes
464	>	if (atLeastJava8()) {
465	>	String[] java8TestClassNames = {
466	>	"Atomic8Test",
467	>	"CompletableFutureTest",
468	>	"ConcurrentHashMap8Test",
469	>	"CountedCompleterTest",
470	>	"DoubleAccumulatorTest",
471	>	"DoubleAdderTest",
472	>	"ForkJoinPool8Test",
473	>	"ForkJoinTask8Test",
474	>	"LongAccumulatorTest",
475	>	"LongAdderTest",
476	>	"SplittableRandomTest",
477	>	"StampedLockTest",
478	>	"SubmissionPublisherTest",
479	>	"ThreadLocalRandom8Test",
480	>	};
481	>	addNamedTestClasses(suite, java8TestClassNames);
482	>	}
483	>
484	>	// Java9+ test classes
485	>	if (atLeastJava9()) {
486	>	String[] java9TestClassNames = {
487	>	// Currently empty, but expecting varhandle tests
488	>	};
489	>	addNamedTestClasses(suite, java9TestClassNames);
490	>	}
491
492		return suite;
493		}
494
495	+	/** Returns list of junit-style test method names in given class. */
496	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
497	+	Method[] methods = testClass.getDeclaredMethods();
498	+	ArrayList<String> names = new ArrayList<String>(methods.length);
499	+	for (Method method : methods) {
500	+	if (method.getName().startsWith("test")
501	+	&& Modifier.isPublic(method.getModifiers())
502	+	// method.getParameterCount() requires jdk8+
503	+	&& method.getParameterTypes().length == 0) {
504	+	names.add(method.getName());
505	+	}
506	+	}
507	+	return names;
508	+	}
509	+
510	+	/**
511	+	* Returns junit-style testSuite for the given test class, but
512	+	* parameterized by passing extra data to each test.
513	+	*/
514	+	public static <ExtraData> Test parameterizedTestSuite
515	+	(Class<? extends JSR166TestCase> testClass,
516	+	Class<ExtraData> dataClass,
517	+	ExtraData data) {
518	+	try {
519	+	TestSuite suite = new TestSuite();
520	+	Constructor c =
521	+	testClass.getDeclaredConstructor(dataClass, String.class);
522	+	for (String methodName : testMethodNames(testClass))
523	+	suite.addTest((Test) c.newInstance(data, methodName));
524	+	return suite;
525	+	} catch (Exception e) {
526	+	throw new Error(e);
527	+	}
528	+	}
529	+
530	+	/**
531	+	* Returns junit-style testSuite for the jdk8 extension of the
532	+	* given test class, but parameterized by passing extra data to
533	+	* each test.  Uses reflection to allow compilation in jdk7.
534	+	*/
535	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
536	+	(Class<? extends JSR166TestCase> testClass,
537	+	Class<ExtraData> dataClass,
538	+	ExtraData data) {
539	+	if (atLeastJava8()) {
540	+	String name = testClass.getName();
541	+	String name8 = name.replaceAll("Test$", "8Test");
542	+	if (name.equals(name8)) throw new Error(name);
543	+	try {
544	+	return (Test)
545	+	Class.forName(name8)
546	+	.getMethod("testSuite", new Class[] { dataClass })
547	+	.invoke(null, data);
548	+	} catch (Exception e) {
549	+	throw new Error(e);
550	+	}
551	+	} else {
552	+	return new TestSuite();
553	+	}
554	+	}
555	+
556	+	// Delays for timing-dependent tests, in milliseconds.
557
558		public static long SHORT_DELAY_MS;
559		public static long SMALL_DELAY_MS;
560		public static long MEDIUM_DELAY_MS;
561		public static long LONG_DELAY_MS;
562
185	–
563		/**
564	<	* Returns the shortest timed delay. This could
565	<	* be reimplemented to use for example a Property.
564	>	* Returns the shortest timed delay. This can be scaled up for
565	>	* slow machines using the jsr166.delay.factor system property.
566		*/
567		protected long getShortDelay() {
568	<	return 50;
568	>	return 50 * delayFactor;
569		}
570
194	–
571		/**
572		* Sets delays as multiples of SHORT_DELAY.
573		*/
574		protected void setDelays() {
575		SHORT_DELAY_MS = getShortDelay();
576	<	SMALL_DELAY_MS = SHORT_DELAY_MS * 5;
576	>	SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
577		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
578	<	LONG_DELAY_MS = SHORT_DELAY_MS * 50;
578	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
579		}
580
581		/**
582	<	* Flag set true if any threadAssert methods fail
582	>	* Returns a timeout in milliseconds to be used in tests that
583	>	* verify that operations block or time out.
584		*/
585	<	volatile boolean threadFailed;
585	>	long timeoutMillis() {
586	>	return SHORT_DELAY_MS / 4;
587	>	}
588	>
589	>	/**
590	>	* Returns a new Date instance representing a time at least
591	>	* delayMillis milliseconds in the future.
592	>	*/
593	>	Date delayedDate(long delayMillis) {
594	>	// Add 1 because currentTimeMillis is known to round into the past.
595	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
596	>	}
597
598		/**
599	<	* Initializes test to indicate that no thread assertions have failed
599	>	* The first exception encountered if any threadAssertXXX method fails.
600		*/
601	+	private final AtomicReference<Throwable> threadFailure
602	+	= new AtomicReference<Throwable>(null);
603	+
604	+	/**
605	+	* Records an exception so that it can be rethrown later in the test
606	+	* harness thread, triggering a test case failure.  Only the first
607	+	* failure is recorded; subsequent calls to this method from within
608	+	* the same test have no effect.
609	+	*/
610	+	public void threadRecordFailure(Throwable t) {
611	+	System.err.println(t);
612	+	dumpTestThreads();
613	+	threadFailure.compareAndSet(null, t);
614	+	}
615	+
616		public void setUp() {
617		setDelays();
618	<	threadFailed = false;
618	>	}
619	>
620	>	void tearDownFail(String format, Object... args) {
621	>	String msg = toString() + ": " + String.format(format, args);
622	>	System.err.println(msg);
623	>	dumpTestThreads();
624	>	throw new AssertionFailedError(msg);
625	>	}
626	>
627	>	/**
628	>	* Extra checks that get done for all test cases.
629	>	*
630	>	* Triggers test case failure if any thread assertions have failed,
631	>	* by rethrowing, in the test harness thread, any exception recorded
632	>	* earlier by threadRecordFailure.
633	>	*
634	>	* Triggers test case failure if interrupt status is set in the main thread.
635	>	*/
636	>	public void tearDown() throws Exception {
637	>	Throwable t = threadFailure.getAndSet(null);
638	>	if (t != null) {
639	>	if (t instanceof Error)
640	>	throw (Error) t;
641	>	else if (t instanceof RuntimeException)
642	>	throw (RuntimeException) t;
643	>	else if (t instanceof Exception)
644	>	throw (Exception) t;
645	>	else {
646	>	AssertionFailedError afe =
647	>	new AssertionFailedError(t.toString());
648	>	afe.initCause(t);
649	>	throw afe;
650	>	}
651	>	}
652	>
653	>	if (Thread.interrupted())
654	>	tearDownFail("interrupt status set in main thread");
655	>
656	>	checkForkJoinPoolThreadLeaks();
657		}
658
659		/**
660	<	* Triggers test case failure if any thread assertions have failed
660	>	* Finds missing PoolCleaners
661		*/
662	<	public void tearDown() {
663	<	assertFalse(threadFailed);
662	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
663	>	Thread[] survivors = new Thread[7];
664	>	int count = Thread.enumerate(survivors);
665	>	for (int i = 0; i < count; i++) {
666	>	Thread thread = survivors[i];
667	>	String name = thread.getName();
668	>	if (name.startsWith("ForkJoinPool-")) {
669	>	// give thread some time to terminate
670	>	thread.join(LONG_DELAY_MS);
671	>	if (thread.isAlive())
672	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
673	>	thread);
674	>	}
675	>	}
676	>
677	>	if (!ForkJoinPool.commonPool()
678	>	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
679	>	tearDownFail("ForkJoin common pool thread stuck");
680		}
681
682		/**
683	<	* Fail, also setting status to indicate current testcase should fail
683	>	* Just like fail(reason), but additionally recording (using
684	>	* threadRecordFailure) any AssertionFailedError thrown, so that
685	>	* the current testcase will fail.
686		*/
687		public void threadFail(String reason) {
688	<	threadFailed = true;
689	<	fail(reason);
688	>	try {
689	>	fail(reason);
690	>	} catch (AssertionFailedError t) {
691	>	threadRecordFailure(t);
692	>	throw t;
693	>	}
694		}
695
696		/**
697	<	* If expression not true, set status to indicate current testcase
698	<	* should fail
697	>	* Just like assertTrue(b), but additionally recording (using
698	>	* threadRecordFailure) any AssertionFailedError thrown, so that
699	>	* the current testcase will fail.
700		*/
701		public void threadAssertTrue(boolean b) {
702	<	if (!b) {
239	<	threadFailed = true;
702	>	try {
703		assertTrue(b);
704	+	} catch (AssertionFailedError t) {
705	+	threadRecordFailure(t);
706	+	throw t;
707		}
708		}
709
710		/**
711	<	* If expression not false, set status to indicate current testcase
712	<	* should fail
711	>	* Just like assertFalse(b), but additionally recording (using
712	>	* threadRecordFailure) any AssertionFailedError thrown, so that
713	>	* the current testcase will fail.
714		*/
715		public void threadAssertFalse(boolean b) {
716	<	if (b) {
250	<	threadFailed = true;
716	>	try {
717		assertFalse(b);
718	+	} catch (AssertionFailedError t) {
719	+	threadRecordFailure(t);
720	+	throw t;
721		}
722		}
723
724		/**
725	<	* If argument not null, set status to indicate current testcase
726	<	* should fail
725	>	* Just like assertNull(x), but additionally recording (using
726	>	* threadRecordFailure) any AssertionFailedError thrown, so that
727	>	* the current testcase will fail.
728		*/
729		public void threadAssertNull(Object x) {
730	<	if (x != null) {
261	<	threadFailed = true;
730	>	try {
731		assertNull(x);
732	+	} catch (AssertionFailedError t) {
733	+	threadRecordFailure(t);
734	+	throw t;
735		}
736		}
737
738		/**
739	<	* If arguments not equal, set status to indicate current testcase
740	<	* should fail
739	>	* Just like assertEquals(x, y), but additionally recording (using
740	>	* threadRecordFailure) any AssertionFailedError thrown, so that
741	>	* the current testcase will fail.
742		*/
743		public void threadAssertEquals(long x, long y) {
744	<	if (x != y) {
272	<	threadFailed = true;
744	>	try {
745		assertEquals(x, y);
746	+	} catch (AssertionFailedError t) {
747	+	threadRecordFailure(t);
748	+	throw t;
749		}
750		}
751
752		/**
753	<	* If arguments not equal, set status to indicate current testcase
754	<	* should fail
753	>	* Just like assertEquals(x, y), but additionally recording (using
754	>	* threadRecordFailure) any AssertionFailedError thrown, so that
755	>	* the current testcase will fail.
756		*/
757		public void threadAssertEquals(Object x, Object y) {
758	<	if (x != y && (x == null || !x.equals(y))) {
283	<	threadFailed = true;
758	>	try {
759		assertEquals(x, y);
760	+	} catch (AssertionFailedError fail) {
761	+	threadRecordFailure(fail);
762	+	throw fail;
763	+	} catch (Throwable fail) {
764	+	threadUnexpectedException(fail);
765	+	}
766	+	}
767	+
768	+	/**
769	+	* Just like assertSame(x, y), but additionally recording (using
770	+	* threadRecordFailure) any AssertionFailedError thrown, so that
771	+	* the current testcase will fail.
772	+	*/
773	+	public void threadAssertSame(Object x, Object y) {
774	+	try {
775	+	assertSame(x, y);
776	+	} catch (AssertionFailedError fail) {
777	+	threadRecordFailure(fail);
778	+	throw fail;
779		}
780		}
781
782		/**
783	<	* threadFail with message "should throw exception"
783	>	* Calls threadFail with message "should throw exception".
784		*/
785		public void threadShouldThrow() {
786	<	threadFailed = true;
293	<	fail("should throw exception");
786	>	threadFail("should throw exception");
787		}
788
789		/**
790	<	* threadFail with message "should throw" + exceptionName
790	>	* Calls threadFail with message "should throw" + exceptionName.
791		*/
792		public void threadShouldThrow(String exceptionName) {
793	<	threadFailed = true;
301	<	fail("should throw " + exceptionName);
793	>	threadFail("should throw " + exceptionName);
794		}
795
796		/**
797	<	* threadFail with message "Unexpected exception"
797	>	* Records the given exception using {@link #threadRecordFailure},
798	>	* then rethrows the exception, wrapping it in an
799	>	* AssertionFailedError if necessary.
800		*/
801	<	public void threadUnexpectedException() {
802	<	threadFailed = true;
803	<	fail("Unexpected exception");
801	>	public void threadUnexpectedException(Throwable t) {
802	>	threadRecordFailure(t);
803	>	t.printStackTrace();
804	>	if (t instanceof RuntimeException)
805	>	throw (RuntimeException) t;
806	>	else if (t instanceof Error)
807	>	throw (Error) t;
808	>	else {
809	>	AssertionFailedError afe =
810	>	new AssertionFailedError("unexpected exception: " + t);
811	>	afe.initCause(t);
812	>	throw afe;
813	>	}
814		}
815
816		/**
817	<	* threadFail with message "Unexpected exception", with argument
817	>	* Delays, via Thread.sleep, for the given millisecond delay, but
818	>	* if the sleep is shorter than specified, may re-sleep or yield
819	>	* until time elapses.  Ensures that the given time, as measured
820	>	* by System.nanoTime(), has elapsed.
821		*/
822	<	public void threadUnexpectedException(Throwable ex) {
823	<	threadFailed = true;
824	<	ex.printStackTrace();
825	<	fail("Unexpected exception: " + ex);
822	>	static void delay(long millis) throws InterruptedException {
823	>	long nanos = millis * (1000 * 1000);
824	>	final long wakeupTime = System.nanoTime() + nanos;
825	>	do {
826	>	if (millis > 0L)
827	>	Thread.sleep(millis);
828	>	else // too short to sleep
829	>	Thread.yield();
830	>	nanos = wakeupTime - System.nanoTime();
831	>	millis = nanos / (1000 * 1000);
832	>	} while (nanos >= 0L);
833		}
834
835		/**
836	<	* Wait out termination of a thread pool or fail doing so
836	>	* Allows use of try-with-resources with per-test thread pools.
837		*/
838	<	public void joinPool(ExecutorService exec) {
838	>	class PoolCleaner implements AutoCloseable {
839	>	private final ExecutorService pool;
840	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
841	>	public void close() { joinPool(pool); }
842	>	}
843	>
844	>	/**
845	>	* An extension of PoolCleaner that has an action to release the pool.
846	>	*/
847	>	class PoolCleanerWithReleaser extends PoolCleaner {
848	>	private final Runnable releaser;
849	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
850	>	super(pool);
851	>	this.releaser = releaser;
852	>	}
853	>	public void close() {
854	>	try {
855	>	releaser.run();
856	>	} finally {
857	>	super.close();
858	>	}
859	>	}
860	>	}
861	>
862	>	PoolCleaner cleaner(ExecutorService pool) {
863	>	return new PoolCleaner(pool);
864	>	}
865	>
866	>	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
867	>	return new PoolCleanerWithReleaser(pool, releaser);
868	>	}
869	>
870	>	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
871	>	return new PoolCleanerWithReleaser(pool, releaser(latch));
872	>	}
873	>
874	>	Runnable releaser(final CountDownLatch latch) {
875	>	return new Runnable() { public void run() {
876	>	do { latch.countDown(); }
877	>	while (latch.getCount() > 0);
878	>	}};
879	>	}
880	>
881	>	/**
882	>	* Waits out termination of a thread pool or fails doing so.
883	>	*/
884	>	void joinPool(ExecutorService pool) {
885		try {
886	<	exec.shutdown();
887	<	assertTrue(exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
886	>	pool.shutdown();
887	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
888	>	try {
889	>	threadFail("ExecutorService " + pool +
890	>	" did not terminate in a timely manner");
891	>	} finally {
892	>	// last resort, for the benefit of subsequent tests
893	>	pool.shutdownNow();
894	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
895	>	}
896	>	}
897		} catch (SecurityException ok) {
898		// Allowed in case test doesn't have privs
899	<	} catch (InterruptedException ie) {
900	<	fail("Unexpected InterruptedException");
899	>	} catch (InterruptedException fail) {
900	>	threadFail("Unexpected InterruptedException");
901		}
902		}
903
904	+	/** Like Runnable, but with the freedom to throw anything */
905	+	interface Action { public void run() throws Throwable; }
906
907		/**
908	<	* fail with message "should throw exception"
908	>	* Runs all the given actions in parallel, failing if any fail.
909	>	* Useful for running multiple variants of tests that are
910	>	* necessarily individually slow because they must block.
911		*/
912	<	public void shouldThrow() {
913	<	fail("Should throw exception");
912	>	void testInParallel(Action ... actions) {
913	>	ExecutorService pool = Executors.newCachedThreadPool();
914	>	try (PoolCleaner cleaner = cleaner(pool)) {
915	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
916	>	for (final Action action : actions)
917	>	futures.add(pool.submit(new CheckedRunnable() {
918	>	public void realRun() throws Throwable { action.run();}}));
919	>	for (Future<?> future : futures)
920	>	try {
921	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
922	>	} catch (ExecutionException ex) {
923	>	threadUnexpectedException(ex.getCause());
924	>	} catch (Exception ex) {
925	>	threadUnexpectedException(ex);
926	>	}
927	>	}
928		}
929
930		/**
931	<	* fail with message "should throw " + exceptionName
931	>	* A debugging tool to print stack traces of most threads, as jstack does.
932	>	* Uninteresting threads are filtered out.
933		*/
934	<	public void shouldThrow(String exceptionName) {
935	<	fail("Should throw " + exceptionName);
934	>	static void dumpTestThreads() {
935	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
936	>	System.err.println("------ stacktrace dump start ------");
937	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
938	>	String name = info.getThreadName();
939	>	if ("Signal Dispatcher".equals(name))
940	>	continue;
941	>	if ("Reference Handler".equals(name)
942	>	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
943	>	continue;
944	>	if ("Finalizer".equals(name)
945	>	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
946	>	continue;
947	>	if ("checkForWedgedTest".equals(name))
948	>	continue;
949	>	System.err.print(info);
950	>	}
951	>	System.err.println("------ stacktrace dump end ------");
952	>	}
953	>
954	>	/**
955	>	* Checks that thread does not terminate within the default
956	>	* millisecond delay of {@code timeoutMillis()}.
957	>	*/
958	>	void assertThreadStaysAlive(Thread thread) {
959	>	assertThreadStaysAlive(thread, timeoutMillis());
960		}
961
962		/**
963	<	* fail with message "Unexpected exception"
963	>	* Checks that thread does not terminate within the given millisecond delay.
964		*/
965	<	public void unexpectedException() {
966	<	fail("Unexpected exception");
965	>	void assertThreadStaysAlive(Thread thread, long millis) {
966	>	try {
967	>	// No need to optimize the failing case via Thread.join.
968	>	delay(millis);
969	>	assertTrue(thread.isAlive());
970	>	} catch (InterruptedException fail) {
971	>	threadFail("Unexpected InterruptedException");
972	>	}
973		}
974
975		/**
976	<	* fail with message "Unexpected exception", with argument
976	>	* Checks that the threads do not terminate within the default
977	>	* millisecond delay of {@code timeoutMillis()}.
978		*/
979	<	public void unexpectedException(Throwable ex) {
980	<	ex.printStackTrace();
362	<	fail("Unexpected exception: " + ex);
979	>	void assertThreadsStayAlive(Thread... threads) {
980	>	assertThreadsStayAlive(timeoutMillis(), threads);
981		}
982
983	+	/**
984	+	* Checks that the threads do not terminate within the given millisecond delay.
985	+	*/
986	+	void assertThreadsStayAlive(long millis, Thread... threads) {
987	+	try {
988	+	// No need to optimize the failing case via Thread.join.
989	+	delay(millis);
990	+	for (Thread thread : threads)
991	+	assertTrue(thread.isAlive());
992	+	} catch (InterruptedException fail) {
993	+	threadFail("Unexpected InterruptedException");
994	+	}
995	+	}
996	+
997	+	/**
998	+	* Checks that future.get times out, with the default timeout of
999	+	* {@code timeoutMillis()}.
1000	+	*/
1001	+	void assertFutureTimesOut(Future future) {
1002	+	assertFutureTimesOut(future, timeoutMillis());
1003	+	}
1004	+
1005	+	/**
1006	+	* Checks that future.get times out, with the given millisecond timeout.
1007	+	*/
1008	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1009	+	long startTime = System.nanoTime();
1010	+	try {
1011	+	future.get(timeoutMillis, MILLISECONDS);
1012	+	shouldThrow();
1013	+	} catch (TimeoutException success) {
1014	+	} catch (Exception fail) {
1015	+	threadUnexpectedException(fail);
1016	+	} finally { future.cancel(true); }
1017	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1018	+	}
1019	+
1020	+	/**
1021	+	* Fails with message "should throw exception".
1022	+	*/
1023	+	public void shouldThrow() {
1024	+	fail("Should throw exception");
1025	+	}
1026	+
1027	+	/**
1028	+	* Fails with message "should throw " + exceptionName.
1029	+	*/
1030	+	public void shouldThrow(String exceptionName) {
1031	+	fail("Should throw " + exceptionName);
1032	+	}
1033
1034		/**
1035		* The number of elements to place in collections, arrays, etc.
#	Line 388 | Line 1056 | public class JSR166TestCase extends Test
1056		public static final Integer m6  = new Integer(-6);
1057		public static final Integer m10 = new Integer(-10);
1058
1059	+	/**
1060	+	* Runs Runnable r with a security policy that permits precisely
1061	+	* the specified permissions.  If there is no current security
1062	+	* manager, the runnable is run twice, both with and without a
1063	+	* security manager.  We require that any security manager permit
1064	+	* getPolicy/setPolicy.
1065	+	*/
1066	+	public void runWithPermissions(Runnable r, Permission... permissions) {
1067	+	SecurityManager sm = System.getSecurityManager();
1068	+	if (sm == null) {
1069	+	r.run();
1070	+	}
1071	+	runWithSecurityManagerWithPermissions(r, permissions);
1072	+	}
1073	+
1074	+	/**
1075	+	* Runs Runnable r with a security policy that permits precisely
1076	+	* the specified permissions.  If there is no current security
1077	+	* manager, a temporary one is set for the duration of the
1078	+	* Runnable.  We require that any security manager permit
1079	+	* getPolicy/setPolicy.
1080	+	*/
1081	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1082	+	Permission... permissions) {
1083	+	SecurityManager sm = System.getSecurityManager();
1084	+	if (sm == null) {
1085	+	Policy savedPolicy = Policy.getPolicy();
1086	+	try {
1087	+	Policy.setPolicy(permissivePolicy());
1088	+	System.setSecurityManager(new SecurityManager());
1089	+	runWithSecurityManagerWithPermissions(r, permissions);
1090	+	} finally {
1091	+	System.setSecurityManager(null);
1092	+	Policy.setPolicy(savedPolicy);
1093	+	}
1094	+	} else {
1095	+	Policy savedPolicy = Policy.getPolicy();
1096	+	AdjustablePolicy policy = new AdjustablePolicy(permissions);
1097	+	Policy.setPolicy(policy);
1098	+
1099	+	try {
1100	+	r.run();
1101	+	} finally {
1102	+	policy.addPermission(new SecurityPermission("setPolicy"));
1103	+	Policy.setPolicy(savedPolicy);
1104	+	}
1105	+	}
1106	+	}
1107	+
1108	+	/**
1109	+	* Runs a runnable without any permissions.
1110	+	*/
1111	+	public void runWithoutPermissions(Runnable r) {
1112	+	runWithPermissions(r);
1113	+	}
1114
1115		/**
1116		* A security policy where new permissions can be dynamically added
#	Line 395 | Line 1118 | public class JSR166TestCase extends Test
1118		*/
1119		public static class AdjustablePolicy extends java.security.Policy {
1120		Permissions perms = new Permissions();
1121	<	AdjustablePolicy() { }
1121	>	AdjustablePolicy(Permission... permissions) {
1122	>	for (Permission permission : permissions)
1123	>	perms.add(permission);
1124	>	}
1125		void addPermission(Permission perm) { perms.add(perm); }
1126		void clearPermissions() { perms = new Permissions(); }
1127		public PermissionCollection getPermissions(CodeSource cs) {
#	Line 408 | Line 1134 | public class JSR166TestCase extends Test
1134		return perms.implies(p);
1135		}
1136		public void refresh() {}
1137	+	public String toString() {
1138	+	List<Permission> ps = new ArrayList<Permission>();
1139	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1140	+	ps.add(e.nextElement());
1141	+	return "AdjustablePolicy with permissions " + ps;
1142	+	}
1143		}
1144
1145		/**
1146	<	* Sleep until the timeout has elapsed, or interrupted.
415	<	* Does <em>NOT</em> throw InterruptedException.
1146	>	* Returns a policy containing all the permissions we ever need.
1147		*/
1148	<	void sleepTillInterrupted(long timeoutMillis) {
1148	>	public static Policy permissivePolicy() {
1149	>	return new AdjustablePolicy
1150	>	// Permissions j.u.c. needs directly
1151	>	(new RuntimePermission("modifyThread"),
1152	>	new RuntimePermission("getClassLoader"),
1153	>	new RuntimePermission("setContextClassLoader"),
1154	>	// Permissions needed to change permissions!
1155	>	new SecurityPermission("getPolicy"),
1156	>	new SecurityPermission("setPolicy"),
1157	>	new RuntimePermission("setSecurityManager"),
1158	>	// Permissions needed by the junit test harness
1159	>	new RuntimePermission("accessDeclaredMembers"),
1160	>	new PropertyPermission("*", "read"),
1161	>	new java.io.FilePermission("<<ALL FILES>>", "read"));
1162	>	}
1163	>
1164	>	/**
1165	>	* Sleeps until the given time has elapsed.
1166	>	* Throws AssertionFailedError if interrupted.
1167	>	*/
1168	>	void sleep(long millis) {
1169		try {
1170	<	Thread.sleep(timeoutMillis);
1171	<	} catch (InterruptedException wakeup) {}
1170	>	delay(millis);
1171	>	} catch (InterruptedException fail) {
1172	>	AssertionFailedError afe =
1173	>	new AssertionFailedError("Unexpected InterruptedException");
1174	>	afe.initCause(fail);
1175	>	throw afe;
1176	>	}
1177		}
1178
1179		/**
1180	<	* Returns a new started Thread running the given runnable.
1180	>	* Spin-waits up to the specified number of milliseconds for the given
1181	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1182	>	*/
1183	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1184	>	long startTime = System.nanoTime();
1185	>	for (;;) {
1186	>	Thread.State s = thread.getState();
1187	>	if (s == Thread.State.BLOCKED ||
1188	>	s == Thread.State.WAITING ||
1189	>	s == Thread.State.TIMED_WAITING)
1190	>	return;
1191	>	else if (s == Thread.State.TERMINATED)
1192	>	fail("Unexpected thread termination");
1193	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1194	>	threadAssertTrue(thread.isAlive());
1195	>	return;
1196	>	}
1197	>	Thread.yield();
1198	>	}
1199	>	}
1200	>
1201	>	/**
1202	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1203	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1204	>	*/
1205	>	void waitForThreadToEnterWaitState(Thread thread) {
1206	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1207	>	}
1208	>
1209	>	/**
1210	>	* Returns the number of milliseconds since time given by
1211	>	* startNanoTime, which must have been previously returned from a
1212	>	* call to {@link System#nanoTime()}.
1213	>	*/
1214	>	static long millisElapsedSince(long startNanoTime) {
1215	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1216	>	}
1217	>
1218	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1219	>	//         long startTime = System.nanoTime();
1220	>	//         try {
1221	>	//             r.run();
1222	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1223	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1224	>	//             throw new AssertionFailedError("did not return promptly");
1225	>	//     }
1226	>
1227	>	//     void assertTerminatesPromptly(Runnable r) {
1228	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1229	>	//     }
1230	>
1231	>	/**
1232	>	* Checks that timed f.get() returns the expected value, and does not
1233	>	* wait for the timeout to elapse before returning.
1234	>	*/
1235	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1236	>	long startTime = System.nanoTime();
1237	>	try {
1238	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1239	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1240	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1241	>	throw new AssertionFailedError("timed get did not return promptly");
1242	>	}
1243	>
1244	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1245	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1246	>	}
1247	>
1248	>	/**
1249	>	* Returns a new started daemon Thread running the given runnable.
1250		*/
1251		Thread newStartedThread(Runnable runnable) {
1252		Thread t = new Thread(runnable);
1253	+	t.setDaemon(true);
1254		t.start();
1255		return t;
1256		}
1257
1258	+	/**
1259	+	* Waits for the specified time (in milliseconds) for the thread
1260	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1261	+	* the thread (in the hope that it may terminate later) and fails.
1262	+	*/
1263	+	void awaitTermination(Thread t, long timeoutMillis) {
1264	+	try {
1265	+	t.join(timeoutMillis);
1266	+	} catch (InterruptedException fail) {
1267	+	threadUnexpectedException(fail);
1268	+	} finally {
1269	+	if (t.getState() != Thread.State.TERMINATED) {
1270	+	t.interrupt();
1271	+	threadFail("timed out waiting for thread to terminate");
1272	+	}
1273	+	}
1274	+	}
1275	+
1276	+	/**
1277	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1278	+	* terminate (using {@link Thread#join(long)}), else interrupts
1279	+	* the thread (in the hope that it may terminate later) and fails.
1280	+	*/
1281	+	void awaitTermination(Thread t) {
1282	+	awaitTermination(t, LONG_DELAY_MS);
1283	+	}
1284	+
1285		// Some convenient Runnable classes
1286
1287		public abstract class CheckedRunnable implements Runnable {
#	Line 437 | Line 1290 | public class JSR166TestCase extends Test
1290		public final void run() {
1291		try {
1292		realRun();
1293	<	} catch (Throwable t) {
1294	<	threadUnexpectedException(t);
1293	>	} catch (Throwable fail) {
1294	>	threadUnexpectedException(fail);
1295		}
1296		}
1297		}
#	Line 491 | Line 1344 | public class JSR166TestCase extends Test
1344		realRun();
1345		threadShouldThrow("InterruptedException");
1346		} catch (InterruptedException success) {
1347	<	} catch (Throwable t) {
1348	<	threadUnexpectedException(t);
1347	>	threadAssertFalse(Thread.interrupted());
1348	>	} catch (Throwable fail) {
1349	>	threadUnexpectedException(fail);
1350		}
1351		}
1352		}
#	Line 503 | Line 1357 | public class JSR166TestCase extends Test
1357		public final T call() {
1358		try {
1359		return realCall();
1360	<	} catch (Throwable t) {
1361	<	threadUnexpectedException(t);
1360	>	} catch (Throwable fail) {
1361	>	threadUnexpectedException(fail);
1362	>	return null;
1363		}
509	–	return null;
1364		}
1365		}
1366
1367	<	public abstract class CheckedInterruptedCallable<T> implements Callable<T> {
1367	>	public abstract class CheckedInterruptedCallable<T>
1368	>	implements Callable<T> {
1369		protected abstract T realCall() throws Throwable;
1370
1371		public final T call() {
#	Line 519 | Line 1374 | public class JSR166TestCase extends Test
1374		threadShouldThrow("InterruptedException");
1375		return result;
1376		} catch (InterruptedException success) {
1377	<	} catch (Throwable t) {
1378	<	threadUnexpectedException(t);
1377	>	threadAssertFalse(Thread.interrupted());
1378	>	} catch (Throwable fail) {
1379	>	threadUnexpectedException(fail);
1380		}
1381		return null;
1382		}
#	Line 537 | Line 1393 | public class JSR166TestCase extends Test
1393		public static final String TEST_STRING = "a test string";
1394
1395		public static class StringTask implements Callable<String> {
1396	<	public String call() { return TEST_STRING; }
1396	>	final String value;
1397	>	public StringTask() { this(TEST_STRING); }
1398	>	public StringTask(String value) { this.value = value; }
1399	>	public String call() { return value; }
1400		}
1401
1402		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1403		return new CheckedCallable<String>() {
1404	<	public String realCall() {
1404	>	protected String realCall() {
1405		try {
1406		latch.await();
1407		} catch (InterruptedException quittingTime) {}
#	Line 550 | Line 1409 | public class JSR166TestCase extends Test
1409		}};
1410		}
1411
1412	+	public Runnable countDowner(final CountDownLatch latch) {
1413	+	return new CheckedRunnable() {
1414	+	public void realRun() throws InterruptedException {
1415	+	latch.countDown();
1416	+	}};
1417	+	}
1418	+
1419	+	class LatchAwaiter extends CheckedRunnable {
1420	+	static final int NEW = 0;
1421	+	static final int RUNNING = 1;
1422	+	static final int DONE = 2;
1423	+	final CountDownLatch latch;
1424	+	int state = NEW;
1425	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1426	+	public void realRun() throws InterruptedException {
1427	+	state = 1;
1428	+	await(latch);
1429	+	state = 2;
1430	+	}
1431	+	}
1432	+
1433	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1434	+	return new LatchAwaiter(latch);
1435	+	}
1436	+
1437	+	public void await(CountDownLatch latch) {
1438	+	try {
1439	+	if (!latch.await(LONG_DELAY_MS, MILLISECONDS))
1440	+	fail("timed out waiting for CountDownLatch for "
1441	+	+ (LONG_DELAY_MS/1000) + " sec");
1442	+	} catch (Throwable fail) {
1443	+	threadUnexpectedException(fail);
1444	+	}
1445	+	}
1446	+
1447	+	public void await(Semaphore semaphore) {
1448	+	try {
1449	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1450	+	fail("timed out waiting for Semaphore for "
1451	+	+ (LONG_DELAY_MS/1000) + " sec");
1452	+	} catch (Throwable fail) {
1453	+	threadUnexpectedException(fail);
1454	+	}
1455	+	}
1456	+
1457	+	//     /**
1458	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1459	+	//      */
1460	+	//     public void await(AtomicBoolean flag) {
1461	+	//         await(flag, LONG_DELAY_MS);
1462	+	//     }
1463	+
1464	+	//     /**
1465	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1466	+	//      */
1467	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1468	+	//         long startTime = System.nanoTime();
1469	+	//         while (!flag.get()) {
1470	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1471	+	//                 throw new AssertionFailedError("timed out");
1472	+	//             Thread.yield();
1473	+	//         }
1474	+	//     }
1475	+
1476		public static class NPETask implements Callable<String> {
1477		public String call() { throw new NullPointerException(); }
1478		}
#	Line 560 | Line 1483 | public class JSR166TestCase extends Test
1483
1484		public class ShortRunnable extends CheckedRunnable {
1485		protected void realRun() throws Throwable {
1486	<	Thread.sleep(SHORT_DELAY_MS);
1486	>	delay(SHORT_DELAY_MS);
1487		}
1488		}
1489
1490		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1491		protected void realRun() throws InterruptedException {
1492	<	Thread.sleep(SHORT_DELAY_MS);
1492	>	delay(SHORT_DELAY_MS);
1493		}
1494		}
1495
1496		public class SmallRunnable extends CheckedRunnable {
1497		protected void realRun() throws Throwable {
1498	<	Thread.sleep(SMALL_DELAY_MS);
1498	>	delay(SMALL_DELAY_MS);
1499		}
1500		}
1501
1502		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1503		protected void realRun() {
1504		try {
1505	<	Thread.sleep(SMALL_DELAY_MS);
1505	>	delay(SMALL_DELAY_MS);
1506		} catch (InterruptedException ok) {}
1507		}
1508		}
1509
1510		public class SmallCallable extends CheckedCallable {
1511		protected Object realCall() throws InterruptedException {
1512	<	Thread.sleep(SMALL_DELAY_MS);
1512	>	delay(SMALL_DELAY_MS);
1513		return Boolean.TRUE;
1514		}
1515		}
1516
594	–	public class SmallInterruptedRunnable extends CheckedInterruptedRunnable {
595	–	protected void realRun() throws InterruptedException {
596	–	Thread.sleep(SMALL_DELAY_MS);
597	–	}
598	–	}
599	–
1517		public class MediumRunnable extends CheckedRunnable {
1518		protected void realRun() throws Throwable {
1519	<	Thread.sleep(MEDIUM_DELAY_MS);
1519	>	delay(MEDIUM_DELAY_MS);
1520		}
1521		}
1522
1523		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1524		protected void realRun() throws InterruptedException {
1525	<	Thread.sleep(MEDIUM_DELAY_MS);
1525	>	delay(MEDIUM_DELAY_MS);
1526		}
1527		}
1528
1529	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1530	+	return new CheckedRunnable() {
1531	+	protected void realRun() {
1532	+	try {
1533	+	delay(timeoutMillis);
1534	+	} catch (InterruptedException ok) {}
1535	+	}};
1536	+	}
1537	+
1538		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1539		protected void realRun() {
1540		try {
1541	<	Thread.sleep(MEDIUM_DELAY_MS);
1541	>	delay(MEDIUM_DELAY_MS);
1542		} catch (InterruptedException ok) {}
1543		}
1544		}
#	Line 620 | Line 1546 | public class JSR166TestCase extends Test
1546		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1547		protected void realRun() {
1548		try {
1549	<	Thread.sleep(LONG_DELAY_MS);
1549	>	delay(LONG_DELAY_MS);
1550		} catch (InterruptedException ok) {}
1551		}
1552		}
#	Line 634 | Line 1560 | public class JSR166TestCase extends Test
1560		}
1561		}
1562
1563	+	public interface TrackedRunnable extends Runnable {
1564	+	boolean isDone();
1565	+	}
1566	+
1567	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1568	+	return new TrackedRunnable() {
1569	+	private volatile boolean done = false;
1570	+	public boolean isDone() { return done; }
1571	+	public void run() {
1572	+	try {
1573	+	delay(timeoutMillis);
1574	+	done = true;
1575	+	} catch (InterruptedException ok) {}
1576	+	}
1577	+	};
1578	+	}
1579	+
1580		public static class TrackedShortRunnable implements Runnable {
1581		public volatile boolean done = false;
1582		public void run() {
1583		try {
1584	<	Thread.sleep(SMALL_DELAY_MS);
1584	>	delay(SHORT_DELAY_MS);
1585	>	done = true;
1586	>	} catch (InterruptedException ok) {}
1587	>	}
1588	>	}
1589	>
1590	>	public static class TrackedSmallRunnable implements Runnable {
1591	>	public volatile boolean done = false;
1592	>	public void run() {
1593	>	try {
1594	>	delay(SMALL_DELAY_MS);
1595		done = true;
1596		} catch (InterruptedException ok) {}
1597		}
#	Line 648 | Line 1601 | public class JSR166TestCase extends Test
1601		public volatile boolean done = false;
1602		public void run() {
1603		try {
1604	<	Thread.sleep(MEDIUM_DELAY_MS);
1604	>	delay(MEDIUM_DELAY_MS);
1605		done = true;
1606		} catch (InterruptedException ok) {}
1607		}
#	Line 658 | Line 1611 | public class JSR166TestCase extends Test
1611		public volatile boolean done = false;
1612		public void run() {
1613		try {
1614	<	Thread.sleep(LONG_DELAY_MS);
1614	>	delay(LONG_DELAY_MS);
1615		done = true;
1616		} catch (InterruptedException ok) {}
1617		}
#	Line 675 | Line 1628 | public class JSR166TestCase extends Test
1628		public volatile boolean done = false;
1629		public Object call() {
1630		try {
1631	<	Thread.sleep(SMALL_DELAY_MS);
1631	>	delay(SMALL_DELAY_MS);
1632		done = true;
1633		} catch (InterruptedException ok) {}
1634		return Boolean.TRUE;
1635		}
1636		}
1637
1638	+	/**
1639	+	* Analog of CheckedRunnable for RecursiveAction
1640	+	*/
1641	+	public abstract class CheckedRecursiveAction extends RecursiveAction {
1642	+	protected abstract void realCompute() throws Throwable;
1643	+
1644	+	@Override protected final void compute() {
1645	+	try {
1646	+	realCompute();
1647	+	} catch (Throwable fail) {
1648	+	threadUnexpectedException(fail);
1649	+	}
1650	+	}
1651	+	}
1652	+
1653	+	/**
1654	+	* Analog of CheckedCallable for RecursiveTask
1655	+	*/
1656	+	public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1657	+	protected abstract T realCompute() throws Throwable;
1658	+
1659	+	@Override protected final T compute() {
1660	+	try {
1661	+	return realCompute();
1662	+	} catch (Throwable fail) {
1663	+	threadUnexpectedException(fail);
1664	+	return null;
1665	+	}
1666	+	}
1667	+	}
1668
1669		/**
1670		* For use as RejectedExecutionHandler in constructors
#	Line 691 | Line 1674 | public class JSR166TestCase extends Test
1674		ThreadPoolExecutor executor) {}
1675		}
1676
1677	+	/**
1678	+	* A CyclicBarrier that uses timed await and fails with
1679	+	* AssertionFailedErrors instead of throwing checked exceptions.
1680	+	*/
1681	+	public class CheckedBarrier extends CyclicBarrier {
1682	+	public CheckedBarrier(int parties) { super(parties); }
1683	+
1684	+	public int await() {
1685	+	try {
1686	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1687	+	} catch (TimeoutException timedOut) {
1688	+	throw new AssertionFailedError("timed out");
1689	+	} catch (Exception fail) {
1690	+	AssertionFailedError afe =
1691	+	new AssertionFailedError("Unexpected exception: " + fail);
1692	+	afe.initCause(fail);
1693	+	throw afe;
1694	+	}
1695	+	}
1696	+	}
1697	+
1698	+	void checkEmpty(BlockingQueue q) {
1699	+	try {
1700	+	assertTrue(q.isEmpty());
1701	+	assertEquals(0, q.size());
1702	+	assertNull(q.peek());
1703	+	assertNull(q.poll());
1704	+	assertNull(q.poll(0, MILLISECONDS));
1705	+	assertEquals(q.toString(), "[]");
1706	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1707	+	assertFalse(q.iterator().hasNext());
1708	+	try {
1709	+	q.element();
1710	+	shouldThrow();
1711	+	} catch (NoSuchElementException success) {}
1712	+	try {
1713	+	q.iterator().next();
1714	+	shouldThrow();
1715	+	} catch (NoSuchElementException success) {}
1716	+	try {
1717	+	q.remove();
1718	+	shouldThrow();
1719	+	} catch (NoSuchElementException success) {}
1720	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1721	+	}
1722	+
1723	+	void assertSerialEquals(Object x, Object y) {
1724	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1725	+	}
1726	+
1727	+	void assertNotSerialEquals(Object x, Object y) {
1728	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1729	+	}
1730	+
1731	+	byte[] serialBytes(Object o) {
1732	+	try {
1733	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1734	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1735	+	oos.writeObject(o);
1736	+	oos.flush();
1737	+	oos.close();
1738	+	return bos.toByteArray();
1739	+	} catch (Throwable fail) {
1740	+	threadUnexpectedException(fail);
1741	+	return new byte[0];
1742	+	}
1743	+	}
1744	+
1745	+	@SuppressWarnings("unchecked")
1746	+	<T> T serialClone(T o) {
1747	+	try {
1748	+	ObjectInputStream ois = new ObjectInputStream
1749	+	(new ByteArrayInputStream(serialBytes(o)));
1750	+	T clone = (T) ois.readObject();
1751	+	assertSame(o.getClass(), clone.getClass());
1752	+	return clone;
1753	+	} catch (Throwable fail) {
1754	+	threadUnexpectedException(fail);
1755	+	return null;
1756	+	}
1757	+	}
1758	+
1759	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1760	+	Runnable... throwingActions) {
1761	+	for (Runnable throwingAction : throwingActions) {
1762	+	boolean threw = false;
1763	+	try { throwingAction.run(); }
1764	+	catch (Throwable t) {
1765	+	threw = true;
1766	+	if (!expectedExceptionClass.isInstance(t)) {
1767	+	AssertionFailedError afe =
1768	+	new AssertionFailedError
1769	+	("Expected " + expectedExceptionClass.getName() +
1770	+	", got " + t.getClass().getName());
1771	+	afe.initCause(t);
1772	+	threadUnexpectedException(afe);
1773	+	}
1774	+	}
1775	+	if (!threw)
1776	+	shouldThrow(expectedExceptionClass.getName());
1777	+	}
1778	+	}
1779	+
1780	+	public void assertIteratorExhausted(Iterator<?> it) {
1781	+	try {
1782	+	it.next();
1783	+	shouldThrow();
1784	+	} catch (NoSuchElementException success) {}
1785	+	assertFalse(it.hasNext());
1786	+	}
1787		}

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