ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.57 by jsr166, Mon Oct 4 05:45:19 2010 UTC vs.
Revision 1.214 by jsr166, Fri Dec 9 07:26:04 2016 UTC

#	Line 1 | Line 1
1		/*
2		* Written by Doug Lea with assistance from members of JCP JSR-166
3		* Expert Group and released to the public domain, as explained at
4	<	* http://creativecommons.org/licenses/publicdomain
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.PropertyPermission;
11	<	import java.util.concurrent.*;
12	<	import java.util.concurrent.atomic.AtomicReference;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.management
23	>	* @run junit/othervm/timeout=1000
24	>	*      -Djsr166.testImplementationDetails=true
25	>	*      JSR166TestCase
26	>	* @run junit/othervm/timeout=1000
27	>	*      -Djsr166.testImplementationDetails=true
28	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
29	>	*      JSR166TestCase
30	>	* @run junit/othervm/timeout=1000
31	>	*      -Djsr166.testImplementationDetails=true
32	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
33	>	*      -Djava.util.secureRandomSeed=true
34	>	*      JSR166TestCase
35	>	*/
36	>
37		import static java.util.concurrent.TimeUnit.MILLISECONDS;
38	+	import static java.util.concurrent.TimeUnit.MINUTES;
39	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
40	+
41	+	import java.io.ByteArrayInputStream;
42	+	import java.io.ByteArrayOutputStream;
43	+	import java.io.ObjectInputStream;
44	+	import java.io.ObjectOutputStream;
45	+	import java.lang.management.ManagementFactory;
46	+	import java.lang.management.ThreadInfo;
47	+	import java.lang.management.ThreadMXBean;
48	+	import java.lang.reflect.Constructor;
49	+	import java.lang.reflect.Method;
50	+	import java.lang.reflect.Modifier;
51	+	import java.nio.file.Files;
52	+	import java.nio.file.Paths;
53		import java.security.CodeSource;
54		import java.security.Permission;
55		import java.security.PermissionCollection;
#	Line 18 | Line 57 | import java.security.Permissions;
57		import java.security.Policy;
58		import java.security.ProtectionDomain;
59		import java.security.SecurityPermission;
60	+	import java.util.ArrayList;
61	+	import java.util.Arrays;
62	+	import java.util.Collection;
63	+	import java.util.Collections;
64	+	import java.util.Date;
65	+	import java.util.Enumeration;
66	+	import java.util.Iterator;
67	+	import java.util.List;
68	+	import java.util.NoSuchElementException;
69	+	import java.util.PropertyPermission;
70	+	import java.util.concurrent.BlockingQueue;
71	+	import java.util.concurrent.Callable;
72	+	import java.util.concurrent.CountDownLatch;
73	+	import java.util.concurrent.CyclicBarrier;
74	+	import java.util.concurrent.ExecutionException;
75	+	import java.util.concurrent.Executors;
76	+	import java.util.concurrent.ExecutorService;
77	+	import java.util.concurrent.ForkJoinPool;
78	+	import java.util.concurrent.Future;
79	+	import java.util.concurrent.RecursiveAction;
80	+	import java.util.concurrent.RecursiveTask;
81	+	import java.util.concurrent.RejectedExecutionHandler;
82	+	import java.util.concurrent.Semaphore;
83	+	import java.util.concurrent.SynchronousQueue;
84	+	import java.util.concurrent.ThreadFactory;
85	+	import java.util.concurrent.ThreadLocalRandom;
86	+	import java.util.concurrent.ThreadPoolExecutor;
87	+	import java.util.concurrent.TimeoutException;
88	+	import java.util.concurrent.atomic.AtomicBoolean;
89	+	import java.util.concurrent.atomic.AtomicReference;
90	+	import java.util.regex.Matcher;
91	+	import java.util.regex.Pattern;
92	+
93	+	import junit.framework.AssertionFailedError;
94	+	import junit.framework.Test;
95	+	import junit.framework.TestCase;
96	+	import junit.framework.TestResult;
97	+	import junit.framework.TestSuite;
98
99		/**
100		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 29 | Line 106 | import java.security.SecurityPermission;
106		*
107		* <ol>
108		*
109	<	* <li> All assertions in code running in generated threads must use
109	>	* <li>All assertions in code running in generated threads must use
110		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
111		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
112		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
113		* particularly recommended) for other code to use these forms too.
114		* Only the most typically used JUnit assertion methods are defined
115	<	* this way, but enough to live with.</li>
115	>	* this way, but enough to live with.
116		*
117	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
117	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
118		* to invoke {@code super.setUp} and {@code super.tearDown} within
119		* them. These methods are used to clear and check for thread
120	<	* assertion failures.</li>
120	>	* assertion failures.
121		*
122		* <li>All delays and timeouts must use one of the constants {@code
123		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 51 | Line 128 | import java.security.SecurityPermission;
128		* is always discriminable as larger than SHORT and smaller than
129		* MEDIUM.  And so on. These constants are set to conservative values,
130		* but even so, if there is ever any doubt, they can all be increased
131	<	* in one spot to rerun tests on slower platforms.</li>
131	>	* in one spot to rerun tests on slower platforms.
132		*
133	<	* <li> All threads generated must be joined inside each test case
133	>	* <li>All threads generated must be joined inside each test case
134		* method (or {@code fail} to do so) before returning from the
135		* method. The {@code joinPool} method can be used to do this when
136	<	* using Executors.</li>
136	>	* using Executors.
137		*
138		* </ol>
139		*
140	<	* <p> <b>Other notes</b>
140	>	* <p><b>Other notes</b>
141		* <ul>
142		*
143	<	* <li> Usually, there is one testcase method per JSR166 method
143	>	* <li>Usually, there is one testcase method per JSR166 method
144		* covering "normal" operation, and then as many exception-testing
145		* methods as there are exceptions the method can throw. Sometimes
146		* there are multiple tests per JSR166 method when the different
147		* "normal" behaviors differ significantly. And sometimes testcases
148	<	* cover multiple methods when they cannot be tested in
72	<	* isolation.</li>
148	>	* cover multiple methods when they cannot be tested in isolation.
149		*
150	<	* <li> The documentation style for testcases is to provide as javadoc
150	>	* <li>The documentation style for testcases is to provide as javadoc
151		* a simple sentence or two describing the property that the testcase
152		* method purports to test. The javadocs do not say anything about how
153	<	* the property is tested. To find out, read the code.</li>
153	>	* the property is tested. To find out, read the code.
154		*
155	<	* <li> These tests are "conformance tests", and do not attempt to
155	>	* <li>These tests are "conformance tests", and do not attempt to
156		* test throughput, latency, scalability or other performance factors
157		* (see the separate "jtreg" tests for a set intended to check these
158		* for the most central aspects of functionality.) So, most tests use
159		* the smallest sensible numbers of threads, collection sizes, etc
160	<	* needed to check basic conformance.</li>
160	>	* needed to check basic conformance.
161		*
162		* <li>The test classes currently do not declare inclusion in
163		* any particular package to simplify things for people integrating
164	<	* them in TCK test suites.</li>
164	>	* them in TCK test suites.
165		*
166	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
167	<	* runs all JSR166 unit tests.</li>
166	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
167	>	* runs all JSR166 unit tests.
168		*
169		* </ul>
170		*/
#	Line 96 | Line 172 | public class JSR166TestCase extends Test
172		private static final boolean useSecurityManager =
173		Boolean.getBoolean("jsr166.useSecurityManager");
174
175	+	protected static final boolean expensiveTests =
176	+	Boolean.getBoolean("jsr166.expensiveTests");
177	+
178	+	/**
179	+	* If true, also run tests that are not part of the official tck
180	+	* because they test unspecified implementation details.
181	+	*/
182	+	protected static final boolean testImplementationDetails =
183	+	Boolean.getBoolean("jsr166.testImplementationDetails");
184	+
185	+	/**
186	+	* If true, report on stdout all "slow" tests, that is, ones that
187	+	* take more than profileThreshold milliseconds to execute.
188	+	*/
189	+	private static final boolean profileTests =
190	+	Boolean.getBoolean("jsr166.profileTests");
191	+
192	+	/**
193	+	* The number of milliseconds that tests are permitted for
194	+	* execution without being reported, when profileTests is set.
195	+	*/
196	+	private static final long profileThreshold =
197	+	Long.getLong("jsr166.profileThreshold", 100);
198	+
199	+	/**
200	+	* The number of repetitions per test (for tickling rare bugs).
201	+	*/
202	+	private static final int runsPerTest =
203	+	Integer.getInteger("jsr166.runsPerTest", 1);
204	+
205		/**
206	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
206	>	* The number of repetitions of the test suite (for finding leaks?).
207	>	*/
208	>	private static final int suiteRuns =
209	>	Integer.getInteger("jsr166.suiteRuns", 1);
210	>
211	>	/**
212	>	* Returns the value of the system property, or NaN if not defined.
213	>	*/
214	>	private static float systemPropertyValue(String name) {
215	>	String floatString = System.getProperty(name);
216	>	if (floatString == null)
217	>	return Float.NaN;
218	>	try {
219	>	return Float.parseFloat(floatString);
220	>	} catch (NumberFormatException ex) {
221	>	throw new IllegalArgumentException(
222	>	String.format("Bad float value in system property %s=%s",
223	>	name, floatString));
224	>	}
225	>	}
226	>
227	>	/**
228	>	* The scaling factor to apply to standard delays used in tests.
229	>	* May be initialized from any of:
230	>	* - the "jsr166.delay.factor" system property
231	>	* - the "test.timeout.factor" system property (as used by jtreg)
232	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
233	>	* - hard-coded fuzz factor when using a known slowpoke VM
234	>	*/
235	>	private static final float delayFactor = delayFactor();
236	>
237	>	private static float delayFactor() {
238	>	float x;
239	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
240	>	return x;
241	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
242	>	return x;
243	>	String prop = System.getProperty("java.vm.version");
244	>	if (prop != null && prop.matches(".*debug.*"))
245	>	return 4.0f; // How much slower is fastdebug than product?!
246	>	return 1.0f;
247	>	}
248	>
249	>	public JSR166TestCase() { super(); }
250	>	public JSR166TestCase(String name) { super(name); }
251	>
252	>	/**
253	>	* A filter for tests to run, matching strings of the form
254	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
255	>	* Usefully combined with jsr166.runsPerTest.
256	>	*/
257	>	private static final Pattern methodFilter = methodFilter();
258	>
259	>	private static Pattern methodFilter() {
260	>	String regex = System.getProperty("jsr166.methodFilter");
261	>	return (regex == null) ? null : Pattern.compile(regex);
262	>	}
263	>
264	>	// Instrumentation to debug very rare, but very annoying hung test runs.
265	>	static volatile TestCase currentTestCase;
266	>	// static volatile int currentRun = 0;
267	>	static {
268	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
269	>	// Avoid spurious reports with enormous runsPerTest.
270	>	// A single test case run should never take more than 1 second.
271	>	// But let's cap it at the high end too ...
272	>	final int timeoutMinutes =
273	>	Math.min(15, Math.max(runsPerTest / 60, 1));
274	>	for (TestCase lastTestCase = currentTestCase;;) {
275	>	try { MINUTES.sleep(timeoutMinutes); }
276	>	catch (InterruptedException unexpected) { break; }
277	>	if (lastTestCase == currentTestCase) {
278	>	System.err.printf(
279	>	"Looks like we're stuck running test: %s%n",
280	>	lastTestCase);
281	>	//                     System.err.printf(
282	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
283	>	//                         lastTestCase, currentRun, runsPerTest);
284	>	//                     System.err.println("availableProcessors=" +
285	>	//                         Runtime.getRuntime().availableProcessors());
286	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
287	>	dumpTestThreads();
288	>	// one stack dump is probably enough; more would be spam
289	>	break;
290	>	}
291	>	lastTestCase = currentTestCase;
292	>	}}};
293	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
294	>	thread.setDaemon(true);
295	>	thread.start();
296	>	}
297	>
298	>	//     public static String cpuModel() {
299	>	//         try {
300	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
301	>	//                 .matcher(new String(
302	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
303	>	//             matcher.find();
304	>	//             return matcher.group(1);
305	>	//         } catch (Exception ex) { return null; }
306	>	//     }
307	>
308	>	public void runBare() throws Throwable {
309	>	currentTestCase = this;
310	>	if (methodFilter == null
311	>	|| methodFilter.matcher(toString()).find())
312	>	super.runBare();
313	>	}
314	>
315	>	protected void runTest() throws Throwable {
316	>	for (int i = 0; i < runsPerTest; i++) {
317	>	// currentRun = i;
318	>	if (profileTests)
319	>	runTestProfiled();
320	>	else
321	>	super.runTest();
322	>	}
323	>	}
324	>
325	>	protected void runTestProfiled() throws Throwable {
326	>	for (int i = 0; i < 2; i++) {
327	>	long startTime = System.nanoTime();
328	>	super.runTest();
329	>	long elapsedMillis = millisElapsedSince(startTime);
330	>	if (elapsedMillis < profileThreshold)
331	>	break;
332	>	// Never report first run of any test; treat it as a
333	>	// warmup run, notably to trigger all needed classloading,
334	>	if (i > 0)
335	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
336	>	}
337	>	}
338	>
339	>	/**
340	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
341		*/
342		public static void main(String[] args) {
343	+	main(suite(), args);
344	+	}
345	+
346	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
347	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
348	+	long runTime;
349	+	public void startTest(Test test) {}
350	+	protected void printHeader(long runTime) {
351	+	this.runTime = runTime; // defer printing for later
352	+	}
353	+	protected void printFooter(TestResult result) {
354	+	if (result.wasSuccessful()) {
355	+	getWriter().println("OK (" + result.runCount() + " tests)"
356	+	+ "  Time: " + elapsedTimeAsString(runTime));
357	+	} else {
358	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
359	+	super.printFooter(result);
360	+	}
361	+	}
362	+	}
363	+
364	+	/**
365	+	* Returns a TestRunner that doesn't bother with unnecessary
366	+	* fluff, like printing a "." for each test case.
367	+	*/
368	+	static junit.textui.TestRunner newPithyTestRunner() {
369	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
370	+	runner.setPrinter(new PithyResultPrinter(System.out));
371	+	return runner;
372	+	}
373	+
374	+	/**
375	+	* Runs all unit tests in the given test suite.
376	+	* Actual behavior influenced by jsr166.* system properties.
377	+	*/
378	+	static void main(Test suite, String[] args) {
379		if (useSecurityManager) {
380		System.err.println("Setting a permissive security manager");
381		Policy.setPolicy(permissivePolicy());
382		System.setSecurityManager(new SecurityManager());
383		}
384	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
385	<
386	<	Test s = suite();
387	<	for (int i = 0; i < iters; ++i) {
112	<	junit.textui.TestRunner.run(s);
384	>	for (int i = 0; i < suiteRuns; i++) {
385	>	TestResult result = newPithyTestRunner().doRun(suite);
386	>	if (!result.wasSuccessful())
387	>	System.exit(1);
388		System.gc();
389		System.runFinalization();
390		}
391	<	System.exit(0);
391	>	}
392	>
393	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
394	>	TestSuite suite = new TestSuite();
395	>	for (Object suiteOrClass : suiteOrClasses) {
396	>	if (suiteOrClass instanceof TestSuite)
397	>	suite.addTest((TestSuite) suiteOrClass);
398	>	else if (suiteOrClass instanceof Class)
399	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
400	>	else
401	>	throw new ClassCastException("not a test suite or class");
402	>	}
403	>	return suite;
404	>	}
405	>
406	>	public static void addNamedTestClasses(TestSuite suite,
407	>	String... testClassNames) {
408	>	for (String testClassName : testClassNames) {
409	>	try {
410	>	Class<?> testClass = Class.forName(testClassName);
411	>	Method m = testClass.getDeclaredMethod("suite",
412	>	new Class<?>[0]);
413	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
414	>	} catch (Exception e) {
415	>	throw new Error("Missing test class", e);
416	>	}
417	>	}
418	>	}
419	>
420	>	public static final double JAVA_CLASS_VERSION;
421	>	public static final String JAVA_SPECIFICATION_VERSION;
422	>	static {
423	>	try {
424	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
425	>	new java.security.PrivilegedAction<Double>() {
426	>	public Double run() {
427	>	return Double.valueOf(System.getProperty("java.class.version"));}});
428	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
429	>	new java.security.PrivilegedAction<String>() {
430	>	public String run() {
431	>	return System.getProperty("java.specification.version");}});
432	>	} catch (Throwable t) {
433	>	throw new Error(t);
434	>	}
435	>	}
436	>
437	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
438	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
439	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
440	>	public static boolean atLeastJava9() {
441	>	return JAVA_CLASS_VERSION >= 53.0
442	>	// As of 2015-09, java9 still uses 52.0 class file version
443	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
444	>	}
445	>	public static boolean atLeastJava10() {
446	>	return JAVA_CLASS_VERSION >= 54.0
447	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
448		}
449
450		/**
451	<	* Collects all JSR166 unit tests as one suite
451	>	* Collects all JSR166 unit tests as one suite.
452		*/
453		public static Test suite() {
454	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
455	<
456	<	suite.addTest(ForkJoinPoolTest.suite());
457	<	suite.addTest(ForkJoinTaskTest.suite());
458	<	suite.addTest(RecursiveActionTest.suite());
459	<	suite.addTest(RecursiveTaskTest.suite());
460	<	suite.addTest(LinkedTransferQueueTest.suite());
461	<	suite.addTest(PhaserTest.suite());
462	<	suite.addTest(ThreadLocalRandomTest.suite());
463	<	suite.addTest(AbstractExecutorServiceTest.suite());
464	<	suite.addTest(AbstractQueueTest.suite());
465	<	suite.addTest(AbstractQueuedSynchronizerTest.suite());
466	<	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
467	<	suite.addTest(ArrayBlockingQueueTest.suite());
468	<	suite.addTest(ArrayDequeTest.suite());
469	<	suite.addTest(AtomicBooleanTest.suite());
470	<	suite.addTest(AtomicIntegerArrayTest.suite());
471	<	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
472	<	suite.addTest(AtomicIntegerTest.suite());
473	<	suite.addTest(AtomicLongArrayTest.suite());
474	<	suite.addTest(AtomicLongFieldUpdaterTest.suite());
475	<	suite.addTest(AtomicLongTest.suite());
476	<	suite.addTest(AtomicMarkableReferenceTest.suite());
477	<	suite.addTest(AtomicReferenceArrayTest.suite());
478	<	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
479	<	suite.addTest(AtomicReferenceTest.suite());
480	<	suite.addTest(AtomicStampedReferenceTest.suite());
481	<	suite.addTest(ConcurrentHashMapTest.suite());
482	<	suite.addTest(ConcurrentLinkedDequeTest.suite());
483	<	suite.addTest(ConcurrentLinkedQueueTest.suite());
484	<	suite.addTest(ConcurrentSkipListMapTest.suite());
485	<	suite.addTest(ConcurrentSkipListSubMapTest.suite());
486	<	suite.addTest(ConcurrentSkipListSetTest.suite());
487	<	suite.addTest(ConcurrentSkipListSubSetTest.suite());
488	<	suite.addTest(CopyOnWriteArrayListTest.suite());
489	<	suite.addTest(CopyOnWriteArraySetTest.suite());
490	<	suite.addTest(CountDownLatchTest.suite());
491	<	suite.addTest(CyclicBarrierTest.suite());
492	<	suite.addTest(DelayQueueTest.suite());
493	<	suite.addTest(EntryTest.suite());
494	<	suite.addTest(ExchangerTest.suite());
495	<	suite.addTest(ExecutorsTest.suite());
496	<	suite.addTest(ExecutorCompletionServiceTest.suite());
497	<	suite.addTest(FutureTaskTest.suite());
498	<	suite.addTest(LinkedBlockingDequeTest.suite());
499	<	suite.addTest(LinkedBlockingQueueTest.suite());
500	<	suite.addTest(LinkedListTest.suite());
501	<	suite.addTest(LockSupportTest.suite());
502	<	suite.addTest(PriorityBlockingQueueTest.suite());
503	<	suite.addTest(PriorityQueueTest.suite());
504	<	suite.addTest(ReentrantLockTest.suite());
505	<	suite.addTest(ReentrantReadWriteLockTest.suite());
506	<	suite.addTest(ScheduledExecutorTest.suite());
507	<	suite.addTest(ScheduledExecutorSubclassTest.suite());
508	<	suite.addTest(SemaphoreTest.suite());
509	<	suite.addTest(SynchronousQueueTest.suite());
510	<	suite.addTest(SystemTest.suite());
511	<	suite.addTest(ThreadLocalTest.suite());
512	<	suite.addTest(ThreadPoolExecutorTest.suite());
513	<	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
514	<	suite.addTest(ThreadTest.suite());
515	<	suite.addTest(TimeUnitTest.suite());
516	<	suite.addTest(TreeMapTest.suite());
517	<	suite.addTest(TreeSetTest.suite());
518	<	suite.addTest(TreeSubMapTest.suite());
519	<	suite.addTest(TreeSubSetTest.suite());
454	>	// Java7+ test classes
455	>	TestSuite suite = newTestSuite(
456	>	ForkJoinPoolTest.suite(),
457	>	ForkJoinTaskTest.suite(),
458	>	RecursiveActionTest.suite(),
459	>	RecursiveTaskTest.suite(),
460	>	LinkedTransferQueueTest.suite(),
461	>	PhaserTest.suite(),
462	>	ThreadLocalRandomTest.suite(),
463	>	AbstractExecutorServiceTest.suite(),
464	>	AbstractQueueTest.suite(),
465	>	AbstractQueuedSynchronizerTest.suite(),
466	>	AbstractQueuedLongSynchronizerTest.suite(),
467	>	ArrayBlockingQueueTest.suite(),
468	>	ArrayDequeTest.suite(),
469	>	ArrayListTest.suite(),
470	>	AtomicBooleanTest.suite(),
471	>	AtomicIntegerArrayTest.suite(),
472	>	AtomicIntegerFieldUpdaterTest.suite(),
473	>	AtomicIntegerTest.suite(),
474	>	AtomicLongArrayTest.suite(),
475	>	AtomicLongFieldUpdaterTest.suite(),
476	>	AtomicLongTest.suite(),
477	>	AtomicMarkableReferenceTest.suite(),
478	>	AtomicReferenceArrayTest.suite(),
479	>	AtomicReferenceFieldUpdaterTest.suite(),
480	>	AtomicReferenceTest.suite(),
481	>	AtomicStampedReferenceTest.suite(),
482	>	ConcurrentHashMapTest.suite(),
483	>	ConcurrentLinkedDequeTest.suite(),
484	>	ConcurrentLinkedQueueTest.suite(),
485	>	ConcurrentSkipListMapTest.suite(),
486	>	ConcurrentSkipListSubMapTest.suite(),
487	>	ConcurrentSkipListSetTest.suite(),
488	>	ConcurrentSkipListSubSetTest.suite(),
489	>	CopyOnWriteArrayListTest.suite(),
490	>	CopyOnWriteArraySetTest.suite(),
491	>	CountDownLatchTest.suite(),
492	>	CountedCompleterTest.suite(),
493	>	CyclicBarrierTest.suite(),
494	>	DelayQueueTest.suite(),
495	>	EntryTest.suite(),
496	>	ExchangerTest.suite(),
497	>	ExecutorsTest.suite(),
498	>	ExecutorCompletionServiceTest.suite(),
499	>	FutureTaskTest.suite(),
500	>	LinkedBlockingDequeTest.suite(),
501	>	LinkedBlockingQueueTest.suite(),
502	>	LinkedListTest.suite(),
503	>	LockSupportTest.suite(),
504	>	PriorityBlockingQueueTest.suite(),
505	>	PriorityQueueTest.suite(),
506	>	ReentrantLockTest.suite(),
507	>	ReentrantReadWriteLockTest.suite(),
508	>	ScheduledExecutorTest.suite(),
509	>	ScheduledExecutorSubclassTest.suite(),
510	>	SemaphoreTest.suite(),
511	>	SynchronousQueueTest.suite(),
512	>	SystemTest.suite(),
513	>	ThreadLocalTest.suite(),
514	>	ThreadPoolExecutorTest.suite(),
515	>	ThreadPoolExecutorSubclassTest.suite(),
516	>	ThreadTest.suite(),
517	>	TimeUnitTest.suite(),
518	>	TreeMapTest.suite(),
519	>	TreeSetTest.suite(),
520	>	TreeSubMapTest.suite(),
521	>	TreeSubSetTest.suite(),
522	>	VectorTest.suite());
523	>
524	>	// Java8+ test classes
525	>	if (atLeastJava8()) {
526	>	String[] java8TestClassNames = {
527	>	"ArrayDeque8Test",
528	>	"Atomic8Test",
529	>	"CompletableFutureTest",
530	>	"ConcurrentHashMap8Test",
531	>	"CountedCompleter8Test",
532	>	"DoubleAccumulatorTest",
533	>	"DoubleAdderTest",
534	>	"ForkJoinPool8Test",
535	>	"ForkJoinTask8Test",
536	>	"LongAccumulatorTest",
537	>	"LongAdderTest",
538	>	"SplittableRandomTest",
539	>	"StampedLockTest",
540	>	"SubmissionPublisherTest",
541	>	"ThreadLocalRandom8Test",
542	>	"TimeUnit8Test",
543	>	};
544	>	addNamedTestClasses(suite, java8TestClassNames);
545	>	}
546	>
547	>	// Java9+ test classes
548	>	if (atLeastJava9()) {
549	>	String[] java9TestClassNames = {
550	>	"AtomicBoolean9Test",
551	>	"AtomicInteger9Test",
552	>	"AtomicIntegerArray9Test",
553	>	"AtomicLong9Test",
554	>	"AtomicLongArray9Test",
555	>	"AtomicReference9Test",
556	>	"AtomicReferenceArray9Test",
557	>	"ExecutorCompletionService9Test",
558	>	};
559	>	addNamedTestClasses(suite, java9TestClassNames);
560	>	}
561
562		return suite;
563		}
564
565	+	/** Returns list of junit-style test method names in given class. */
566	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
567	+	Method[] methods = testClass.getDeclaredMethods();
568	+	ArrayList<String> names = new ArrayList<String>(methods.length);
569	+	for (Method method : methods) {
570	+	if (method.getName().startsWith("test")
571	+	&& Modifier.isPublic(method.getModifiers())
572	+	// method.getParameterCount() requires jdk8+
573	+	&& method.getParameterTypes().length == 0) {
574	+	names.add(method.getName());
575	+	}
576	+	}
577	+	return names;
578	+	}
579	+
580	+	/**
581	+	* Returns junit-style testSuite for the given test class, but
582	+	* parameterized by passing extra data to each test.
583	+	*/
584	+	public static <ExtraData> Test parameterizedTestSuite
585	+	(Class<? extends JSR166TestCase> testClass,
586	+	Class<ExtraData> dataClass,
587	+	ExtraData data) {
588	+	try {
589	+	TestSuite suite = new TestSuite();
590	+	Constructor c =
591	+	testClass.getDeclaredConstructor(dataClass, String.class);
592	+	for (String methodName : testMethodNames(testClass))
593	+	suite.addTest((Test) c.newInstance(data, methodName));
594	+	return suite;
595	+	} catch (Exception e) {
596	+	throw new Error(e);
597	+	}
598	+	}
599	+
600	+	/**
601	+	* Returns junit-style testSuite for the jdk8 extension of the
602	+	* given test class, but parameterized by passing extra data to
603	+	* each test.  Uses reflection to allow compilation in jdk7.
604	+	*/
605	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
606	+	(Class<? extends JSR166TestCase> testClass,
607	+	Class<ExtraData> dataClass,
608	+	ExtraData data) {
609	+	if (atLeastJava8()) {
610	+	String name = testClass.getName();
611	+	String name8 = name.replaceAll("Test$", "8Test");
612	+	if (name.equals(name8)) throw new Error(name);
613	+	try {
614	+	return (Test)
615	+	Class.forName(name8)
616	+	.getMethod("testSuite", new Class[] { dataClass })
617	+	.invoke(null, data);
618	+	} catch (Exception e) {
619	+	throw new Error(e);
620	+	}
621	+	} else {
622	+	return new TestSuite();
623	+	}
624	+	}
625	+
626	+	// Delays for timing-dependent tests, in milliseconds.
627
628		public static long SHORT_DELAY_MS;
629		public static long SMALL_DELAY_MS;
630		public static long MEDIUM_DELAY_MS;
631		public static long LONG_DELAY_MS;
632
199	–
633		/**
634	<	* Returns the shortest timed delay. This could
635	<	* be reimplemented to use for example a Property.
634	>	* Returns the shortest timed delay. This can be scaled up for
635	>	* slow machines using the jsr166.delay.factor system property,
636	>	* or via jtreg's -timeoutFactor: flag.
637	>	* http://openjdk.java.net/jtreg/command-help.html
638		*/
639		protected long getShortDelay() {
640	<	return 50;
640	>	return (long) (50 * delayFactor);
641		}
642
208	–
643		/**
644		* Sets delays as multiples of SHORT_DELAY.
645		*/
#	Line 213 | Line 647 | public class JSR166TestCase extends Test
647		SHORT_DELAY_MS = getShortDelay();
648		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
649		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
650	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
650	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
651	>	}
652	>
653	>	/**
654	>	* Returns a timeout in milliseconds to be used in tests that
655	>	* verify that operations block or time out.
656	>	*/
657	>	long timeoutMillis() {
658	>	return SHORT_DELAY_MS / 4;
659	>	}
660	>
661	>	/**
662	>	* Returns a new Date instance representing a time at least
663	>	* delayMillis milliseconds in the future.
664	>	*/
665	>	Date delayedDate(long delayMillis) {
666	>	// Add 1 because currentTimeMillis is known to round into the past.
667	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
668		}
669
670		/**
#	Line 229 | Line 680 | public class JSR166TestCase extends Test
680		* the same test have no effect.
681		*/
682		public void threadRecordFailure(Throwable t) {
683	+	System.err.println(t);
684	+	dumpTestThreads();
685		threadFailure.compareAndSet(null, t);
686		}
687
#	Line 236 | Line 689 | public class JSR166TestCase extends Test
689		setDelays();
690		}
691
692	+	void tearDownFail(String format, Object... args) {
693	+	String msg = toString() + ": " + String.format(format, args);
694	+	System.err.println(msg);
695	+	dumpTestThreads();
696	+	throw new AssertionFailedError(msg);
697	+	}
698	+
699		/**
700	+	* Extra checks that get done for all test cases.
701	+	*
702		* Triggers test case failure if any thread assertions have failed,
703		* by rethrowing, in the test harness thread, any exception recorded
704		* earlier by threadRecordFailure.
705	+	*
706	+	* Triggers test case failure if interrupt status is set in the main thread.
707		*/
708		public void tearDown() throws Exception {
709	<	Throwable t = threadFailure.get();
709	>	Throwable t = threadFailure.getAndSet(null);
710		if (t != null) {
711		if (t instanceof Error)
712		throw (Error) t;
#	Line 257 | Line 721 | public class JSR166TestCase extends Test
721		throw afe;
722		}
723		}
724	+
725	+	if (Thread.interrupted())
726	+	tearDownFail("interrupt status set in main thread");
727	+
728	+	checkForkJoinPoolThreadLeaks();
729	+	}
730	+
731	+	/**
732	+	* Finds missing PoolCleaners
733	+	*/
734	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
735	+	Thread[] survivors = new Thread[7];
736	+	int count = Thread.enumerate(survivors);
737	+	for (int i = 0; i < count; i++) {
738	+	Thread thread = survivors[i];
739	+	String name = thread.getName();
740	+	if (name.startsWith("ForkJoinPool-")) {
741	+	// give thread some time to terminate
742	+	thread.join(LONG_DELAY_MS);
743	+	if (thread.isAlive())
744	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
745	+	thread);
746	+	}
747	+	}
748	+
749	+	if (!ForkJoinPool.commonPool()
750	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
751	+	tearDownFail("ForkJoin common pool thread stuck");
752		}
753
754		/**
#	Line 269 | Line 761 | public class JSR166TestCase extends Test
761		fail(reason);
762		} catch (AssertionFailedError t) {
763		threadRecordFailure(t);
764	<	fail(reason);
764	>	throw t;
765		}
766		}
767
#	Line 337 | Line 829 | public class JSR166TestCase extends Test
829		public void threadAssertEquals(Object x, Object y) {
830		try {
831		assertEquals(x, y);
832	<	} catch (AssertionFailedError t) {
833	<	threadRecordFailure(t);
834	<	throw t;
835	<	} catch (Throwable t) {
836	<	threadUnexpectedException(t);
832	>	} catch (AssertionFailedError fail) {
833	>	threadRecordFailure(fail);
834	>	throw fail;
835	>	} catch (Throwable fail) {
836	>	threadUnexpectedException(fail);
837		}
838		}
839
#	Line 353 | Line 845 | public class JSR166TestCase extends Test
845		public void threadAssertSame(Object x, Object y) {
846		try {
847		assertSame(x, y);
848	<	} catch (AssertionFailedError t) {
849	<	threadRecordFailure(t);
850	<	throw t;
848	>	} catch (AssertionFailedError fail) {
849	>	threadRecordFailure(fail);
850	>	throw fail;
851		}
852		}
853
#	Line 388 | Line 880 | public class JSR166TestCase extends Test
880		else {
881		AssertionFailedError afe =
882		new AssertionFailedError("unexpected exception: " + t);
883	<	t.initCause(t);
883	>	afe.initCause(t);
884		throw afe;
885		}
886		}
887
888		/**
889	+	* Delays, via Thread.sleep, for the given millisecond delay, but
890	+	* if the sleep is shorter than specified, may re-sleep or yield
891	+	* until time elapses.  Ensures that the given time, as measured
892	+	* by System.nanoTime(), has elapsed.
893	+	*/
894	+	static void delay(long millis) throws InterruptedException {
895	+	long nanos = millis * (1000 * 1000);
896	+	final long wakeupTime = System.nanoTime() + nanos;
897	+	do {
898	+	if (millis > 0L)
899	+	Thread.sleep(millis);
900	+	else // too short to sleep
901	+	Thread.yield();
902	+	nanos = wakeupTime - System.nanoTime();
903	+	millis = nanos / (1000 * 1000);
904	+	} while (nanos >= 0L);
905	+	}
906	+
907	+	/**
908	+	* Allows use of try-with-resources with per-test thread pools.
909	+	*/
910	+	class PoolCleaner implements AutoCloseable {
911	+	private final ExecutorService pool;
912	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
913	+	public void close() { joinPool(pool); }
914	+	}
915	+
916	+	/**
917	+	* An extension of PoolCleaner that has an action to release the pool.
918	+	*/
919	+	class PoolCleanerWithReleaser extends PoolCleaner {
920	+	private final Runnable releaser;
921	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
922	+	super(pool);
923	+	this.releaser = releaser;
924	+	}
925	+	public void close() {
926	+	try {
927	+	releaser.run();
928	+	} finally {
929	+	super.close();
930	+	}
931	+	}
932	+	}
933	+
934	+	PoolCleaner cleaner(ExecutorService pool) {
935	+	return new PoolCleaner(pool);
936	+	}
937	+
938	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
939	+	return new PoolCleanerWithReleaser(pool, releaser);
940	+	}
941	+
942	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
943	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
944	+	}
945	+
946	+	Runnable releaser(final CountDownLatch latch) {
947	+	return new Runnable() { public void run() {
948	+	do { latch.countDown(); }
949	+	while (latch.getCount() > 0);
950	+	}};
951	+	}
952	+
953	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
954	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
955	+	}
956	+
957	+	Runnable releaser(final AtomicBoolean flag) {
958	+	return new Runnable() { public void run() { flag.set(true); }};
959	+	}
960	+
961	+	/**
962		* Waits out termination of a thread pool or fails doing so.
963		*/
964	<	public void joinPool(ExecutorService exec) {
964	>	void joinPool(ExecutorService pool) {
965		try {
966	<	exec.shutdown();
967	<	assertTrue("ExecutorService did not terminate in a timely manner",
968	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
966	>	pool.shutdown();
967	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
968	>	try {
969	>	threadFail("ExecutorService " + pool +
970	>	" did not terminate in a timely manner");
971	>	} finally {
972	>	// last resort, for the benefit of subsequent tests
973	>	pool.shutdownNow();
974	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
975	>	}
976	>	}
977		} catch (SecurityException ok) {
978		// Allowed in case test doesn't have privs
979	<	} catch (InterruptedException ie) {
980	<	fail("Unexpected InterruptedException");
979	>	} catch (InterruptedException fail) {
980	>	threadFail("Unexpected InterruptedException");
981	>	}
982	>	}
983	>
984	>	/**
985	>	* Like Runnable, but with the freedom to throw anything.
986	>	* junit folks had the same idea:
987	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
988	>	*/
989	>	interface Action { public void run() throws Throwable; }
990	>
991	>	/**
992	>	* Runs all the given actions in parallel, failing if any fail.
993	>	* Useful for running multiple variants of tests that are
994	>	* necessarily individually slow because they must block.
995	>	*/
996	>	void testInParallel(Action ... actions) {
997	>	ExecutorService pool = Executors.newCachedThreadPool();
998	>	try (PoolCleaner cleaner = cleaner(pool)) {
999	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1000	>	for (final Action action : actions)
1001	>	futures.add(pool.submit(new CheckedRunnable() {
1002	>	public void realRun() throws Throwable { action.run();}}));
1003	>	for (Future<?> future : futures)
1004	>	try {
1005	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1006	>	} catch (ExecutionException ex) {
1007	>	threadUnexpectedException(ex.getCause());
1008	>	} catch (Exception ex) {
1009	>	threadUnexpectedException(ex);
1010	>	}
1011	>	}
1012	>	}
1013	>
1014	>	/**
1015	>	* A debugging tool to print stack traces of most threads, as jstack does.
1016	>	* Uninteresting threads are filtered out.
1017	>	*/
1018	>	static void dumpTestThreads() {
1019	>	SecurityManager sm = System.getSecurityManager();
1020	>	if (sm != null) {
1021	>	try {
1022	>	System.setSecurityManager(null);
1023	>	} catch (SecurityException giveUp) {
1024	>	return;
1025	>	}
1026	>	}
1027	>
1028	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1029	>	System.err.println("------ stacktrace dump start ------");
1030	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1031	>	final String name = info.getThreadName();
1032	>	String lockName;
1033	>	if ("Signal Dispatcher".equals(name))
1034	>	continue;
1035	>	if ("Reference Handler".equals(name)
1036	>	&& (lockName = info.getLockName()) != null
1037	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1038	>	continue;
1039	>	if ("Finalizer".equals(name)
1040	>	&& (lockName = info.getLockName()) != null
1041	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1042	>	continue;
1043	>	if ("checkForWedgedTest".equals(name))
1044	>	continue;
1045	>	System.err.print(info);
1046	>	}
1047	>	System.err.println("------ stacktrace dump end ------");
1048	>
1049	>	if (sm != null) System.setSecurityManager(sm);
1050	>	}
1051	>
1052	>	/**
1053	>	* Checks that thread does not terminate within the default
1054	>	* millisecond delay of {@code timeoutMillis()}.
1055	>	*/
1056	>	void assertThreadStaysAlive(Thread thread) {
1057	>	assertThreadStaysAlive(thread, timeoutMillis());
1058	>	}
1059	>
1060	>	/**
1061	>	* Checks that thread does not terminate within the given millisecond delay.
1062	>	*/
1063	>	void assertThreadStaysAlive(Thread thread, long millis) {
1064	>	try {
1065	>	// No need to optimize the failing case via Thread.join.
1066	>	delay(millis);
1067	>	assertTrue(thread.isAlive());
1068	>	} catch (InterruptedException fail) {
1069	>	threadFail("Unexpected InterruptedException");
1070		}
1071		}
1072
1073	+	/**
1074	+	* Checks that the threads do not terminate within the default
1075	+	* millisecond delay of {@code timeoutMillis()}.
1076	+	*/
1077	+	void assertThreadsStayAlive(Thread... threads) {
1078	+	assertThreadsStayAlive(timeoutMillis(), threads);
1079	+	}
1080	+
1081	+	/**
1082	+	* Checks that the threads do not terminate within the given millisecond delay.
1083	+	*/
1084	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1085	+	try {
1086	+	// No need to optimize the failing case via Thread.join.
1087	+	delay(millis);
1088	+	for (Thread thread : threads)
1089	+	assertTrue(thread.isAlive());
1090	+	} catch (InterruptedException fail) {
1091	+	threadFail("Unexpected InterruptedException");
1092	+	}
1093	+	}
1094	+
1095	+	/**
1096	+	* Checks that future.get times out, with the default timeout of
1097	+	* {@code timeoutMillis()}.
1098	+	*/
1099	+	void assertFutureTimesOut(Future future) {
1100	+	assertFutureTimesOut(future, timeoutMillis());
1101	+	}
1102	+
1103	+	/**
1104	+	* Checks that future.get times out, with the given millisecond timeout.
1105	+	*/
1106	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1107	+	long startTime = System.nanoTime();
1108	+	try {
1109	+	future.get(timeoutMillis, MILLISECONDS);
1110	+	shouldThrow();
1111	+	} catch (TimeoutException success) {
1112	+	} catch (Exception fail) {
1113	+	threadUnexpectedException(fail);
1114	+	} finally { future.cancel(true); }
1115	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1116	+	}
1117
1118		/**
1119		* Fails with message "should throw exception".
#	Line 448 | Line 1154 | public class JSR166TestCase extends Test
1154		public static final Integer m6  = new Integer(-6);
1155		public static final Integer m10 = new Integer(-10);
1156
451	–
1157		/**
1158		* Runs Runnable r with a security policy that permits precisely
1159		* the specified permissions.  If there is no current security
#	Line 460 | Line 1165 | public class JSR166TestCase extends Test
1165		SecurityManager sm = System.getSecurityManager();
1166		if (sm == null) {
1167		r.run();
1168	+	}
1169	+	runWithSecurityManagerWithPermissions(r, permissions);
1170	+	}
1171	+
1172	+	/**
1173	+	* Runs Runnable r with a security policy that permits precisely
1174	+	* the specified permissions.  If there is no current security
1175	+	* manager, a temporary one is set for the duration of the
1176	+	* Runnable.  We require that any security manager permit
1177	+	* getPolicy/setPolicy.
1178	+	*/
1179	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1180	+	Permission... permissions) {
1181	+	SecurityManager sm = System.getSecurityManager();
1182	+	if (sm == null) {
1183		Policy savedPolicy = Policy.getPolicy();
1184		try {
1185		Policy.setPolicy(permissivePolicy());
1186		System.setSecurityManager(new SecurityManager());
1187	<	runWithPermissions(r, permissions);
1187	>	runWithSecurityManagerWithPermissions(r, permissions);
1188		} finally {
1189		System.setSecurityManager(null);
1190		Policy.setPolicy(savedPolicy);
#	Line 512 | Line 1232 | public class JSR166TestCase extends Test
1232		return perms.implies(p);
1233		}
1234		public void refresh() {}
1235	+	public String toString() {
1236	+	List<Permission> ps = new ArrayList<Permission>();
1237	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1238	+	ps.add(e.nextElement());
1239	+	return "AdjustablePolicy with permissions " + ps;
1240	+	}
1241		}
1242
1243		/**
#	Line 534 | Line 1260 | public class JSR166TestCase extends Test
1260		}
1261
1262		/**
1263	<	* Sleep until the timeout has elapsed, or interrupted.
1264	<	* Does <em>NOT</em> throw InterruptedException.
1263	>	* Sleeps until the given time has elapsed.
1264	>	* Throws AssertionFailedError if interrupted.
1265	>	*/
1266	>	static void sleep(long millis) {
1267	>	try {
1268	>	delay(millis);
1269	>	} catch (InterruptedException fail) {
1270	>	AssertionFailedError afe =
1271	>	new AssertionFailedError("Unexpected InterruptedException");
1272	>	afe.initCause(fail);
1273	>	throw afe;
1274	>	}
1275	>	}
1276	>
1277	>	/**
1278	>	* Spin-waits up to the specified number of milliseconds for the given
1279	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1280		*/
1281	<	void sleepTillInterrupted(long timeoutMillis) {
1281	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1282	>	long startTime = 0L;
1283	>	for (;;) {
1284	>	Thread.State s = thread.getState();
1285	>	if (s == Thread.State.BLOCKED ||
1286	>	s == Thread.State.WAITING ||
1287	>	s == Thread.State.TIMED_WAITING)
1288	>	return;
1289	>	else if (s == Thread.State.TERMINATED)
1290	>	fail("Unexpected thread termination");
1291	>	else if (startTime == 0L)
1292	>	startTime = System.nanoTime();
1293	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1294	>	threadAssertTrue(thread.isAlive());
1295	>	return;
1296	>	}
1297	>	Thread.yield();
1298	>	}
1299	>	}
1300	>
1301	>	/**
1302	>	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1303	>	* state: BLOCKED, WAITING, or TIMED_WAITING.
1304	>	*/
1305	>	void waitForThreadToEnterWaitState(Thread thread) {
1306	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1307	>	}
1308	>
1309	>	/**
1310	>	* Returns the number of milliseconds since time given by
1311	>	* startNanoTime, which must have been previously returned from a
1312	>	* call to {@link System#nanoTime()}.
1313	>	*/
1314	>	static long millisElapsedSince(long startNanoTime) {
1315	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1316	>	}
1317	>
1318	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1319	>	//         long startTime = System.nanoTime();
1320	>	//         try {
1321	>	//             r.run();
1322	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1323	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1324	>	//             throw new AssertionFailedError("did not return promptly");
1325	>	//     }
1326	>
1327	>	//     void assertTerminatesPromptly(Runnable r) {
1328	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1329	>	//     }
1330	>
1331	>	/**
1332	>	* Checks that timed f.get() returns the expected value, and does not
1333	>	* wait for the timeout to elapse before returning.
1334	>	*/
1335	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1336	>	long startTime = System.nanoTime();
1337		try {
1338	<	Thread.sleep(timeoutMillis);
1339	<	} catch (InterruptedException wakeup) {}
1338	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1339	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1340	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1341	>	throw new AssertionFailedError("timed get did not return promptly");
1342	>	}
1343	>
1344	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1345	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1346		}
1347
1348		/**
1349	<	* Returns a new started Thread running the given runnable.
1349	>	* Returns a new started daemon Thread running the given runnable.
1350		*/
1351		Thread newStartedThread(Runnable runnable) {
1352		Thread t = new Thread(runnable);
1353	+	t.setDaemon(true);
1354		t.start();
1355		return t;
1356		}
1357
1358	+	/**
1359	+	* Waits for the specified time (in milliseconds) for the thread
1360	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1361	+	* the thread (in the hope that it may terminate later) and fails.
1362	+	*/
1363	+	void awaitTermination(Thread t, long timeoutMillis) {
1364	+	try {
1365	+	t.join(timeoutMillis);
1366	+	} catch (InterruptedException fail) {
1367	+	threadUnexpectedException(fail);
1368	+	} finally {
1369	+	if (t.getState() != Thread.State.TERMINATED) {
1370	+	t.interrupt();
1371	+	threadFail("timed out waiting for thread to terminate");
1372	+	}
1373	+	}
1374	+	}
1375	+
1376	+	/**
1377	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1378	+	* terminate (using {@link Thread#join(long)}), else interrupts
1379	+	* the thread (in the hope that it may terminate later) and fails.
1380	+	*/
1381	+	void awaitTermination(Thread t) {
1382	+	awaitTermination(t, LONG_DELAY_MS);
1383	+	}
1384	+
1385		// Some convenient Runnable classes
1386
1387		public abstract class CheckedRunnable implements Runnable {
#	Line 560 | Line 1390 | public class JSR166TestCase extends Test
1390		public final void run() {
1391		try {
1392		realRun();
1393	<	} catch (Throwable t) {
1394	<	threadUnexpectedException(t);
1393	>	} catch (Throwable fail) {
1394	>	threadUnexpectedException(fail);
1395		}
1396		}
1397		}
#	Line 614 | Line 1444 | public class JSR166TestCase extends Test
1444		realRun();
1445		threadShouldThrow("InterruptedException");
1446		} catch (InterruptedException success) {
1447	<	} catch (Throwable t) {
1448	<	threadUnexpectedException(t);
1447	>	threadAssertFalse(Thread.interrupted());
1448	>	} catch (Throwable fail) {
1449	>	threadUnexpectedException(fail);
1450		}
1451		}
1452		}
#	Line 626 | Line 1457 | public class JSR166TestCase extends Test
1457		public final T call() {
1458		try {
1459		return realCall();
1460	<	} catch (Throwable t) {
1461	<	threadUnexpectedException(t);
1460	>	} catch (Throwable fail) {
1461	>	threadUnexpectedException(fail);
1462		return null;
1463		}
1464		}
#	Line 643 | Line 1474 | public class JSR166TestCase extends Test
1474		threadShouldThrow("InterruptedException");
1475		return result;
1476		} catch (InterruptedException success) {
1477	<	} catch (Throwable t) {
1478	<	threadUnexpectedException(t);
1477	>	threadAssertFalse(Thread.interrupted());
1478	>	} catch (Throwable fail) {
1479	>	threadUnexpectedException(fail);
1480		}
1481		return null;
1482		}
#	Line 661 | Line 1493 | public class JSR166TestCase extends Test
1493		public static final String TEST_STRING = "a test string";
1494
1495		public static class StringTask implements Callable<String> {
1496	<	public String call() { return TEST_STRING; }
1496	>	final String value;
1497	>	public StringTask() { this(TEST_STRING); }
1498	>	public StringTask(String value) { this.value = value; }
1499	>	public String call() { return value; }
1500		}
1501
1502		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1503		return new CheckedCallable<String>() {
1504	<	public String realCall() {
1504	>	protected String realCall() {
1505		try {
1506		latch.await();
1507		} catch (InterruptedException quittingTime) {}
#	Line 674 | Line 1509 | public class JSR166TestCase extends Test
1509		}};
1510		}
1511
1512	+	public Runnable countDowner(final CountDownLatch latch) {
1513	+	return new CheckedRunnable() {
1514	+	public void realRun() throws InterruptedException {
1515	+	latch.countDown();
1516	+	}};
1517	+	}
1518	+
1519	+	class LatchAwaiter extends CheckedRunnable {
1520	+	static final int NEW = 0;
1521	+	static final int RUNNING = 1;
1522	+	static final int DONE = 2;
1523	+	final CountDownLatch latch;
1524	+	int state = NEW;
1525	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1526	+	public void realRun() throws InterruptedException {
1527	+	state = 1;
1528	+	await(latch);
1529	+	state = 2;
1530	+	}
1531	+	}
1532	+
1533	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1534	+	return new LatchAwaiter(latch);
1535	+	}
1536	+
1537	+	public void await(CountDownLatch latch, long timeoutMillis) {
1538	+	try {
1539	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1540	+	fail("timed out waiting for CountDownLatch for "
1541	+	+ (timeoutMillis/1000) + " sec");
1542	+	} catch (Throwable fail) {
1543	+	threadUnexpectedException(fail);
1544	+	}
1545	+	}
1546	+
1547	+	public void await(CountDownLatch latch) {
1548	+	await(latch, LONG_DELAY_MS);
1549	+	}
1550	+
1551	+	public void await(Semaphore semaphore) {
1552	+	try {
1553	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1554	+	fail("timed out waiting for Semaphore for "
1555	+	+ (LONG_DELAY_MS/1000) + " sec");
1556	+	} catch (Throwable fail) {
1557	+	threadUnexpectedException(fail);
1558	+	}
1559	+	}
1560	+
1561	+	//     /**
1562	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1563	+	//      */
1564	+	//     public void await(AtomicBoolean flag) {
1565	+	//         await(flag, LONG_DELAY_MS);
1566	+	//     }
1567	+
1568	+	//     /**
1569	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1570	+	//      */
1571	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1572	+	//         long startTime = System.nanoTime();
1573	+	//         while (!flag.get()) {
1574	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1575	+	//                 throw new AssertionFailedError("timed out");
1576	+	//             Thread.yield();
1577	+	//         }
1578	+	//     }
1579	+
1580		public static class NPETask implements Callable<String> {
1581		public String call() { throw new NullPointerException(); }
1582		}
#	Line 684 | Line 1587 | public class JSR166TestCase extends Test
1587
1588		public class ShortRunnable extends CheckedRunnable {
1589		protected void realRun() throws Throwable {
1590	<	Thread.sleep(SHORT_DELAY_MS);
1590	>	delay(SHORT_DELAY_MS);
1591		}
1592		}
1593
1594		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1595		protected void realRun() throws InterruptedException {
1596	<	Thread.sleep(SHORT_DELAY_MS);
1596	>	delay(SHORT_DELAY_MS);
1597		}
1598		}
1599
1600		public class SmallRunnable extends CheckedRunnable {
1601		protected void realRun() throws Throwable {
1602	<	Thread.sleep(SMALL_DELAY_MS);
1602	>	delay(SMALL_DELAY_MS);
1603		}
1604		}
1605
1606		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1607		protected void realRun() {
1608		try {
1609	<	Thread.sleep(SMALL_DELAY_MS);
1609	>	delay(SMALL_DELAY_MS);
1610		} catch (InterruptedException ok) {}
1611		}
1612		}
1613
1614		public class SmallCallable extends CheckedCallable {
1615		protected Object realCall() throws InterruptedException {
1616	<	Thread.sleep(SMALL_DELAY_MS);
1616	>	delay(SMALL_DELAY_MS);
1617		return Boolean.TRUE;
1618		}
1619		}
1620
1621		public class MediumRunnable extends CheckedRunnable {
1622		protected void realRun() throws Throwable {
1623	<	Thread.sleep(MEDIUM_DELAY_MS);
1623	>	delay(MEDIUM_DELAY_MS);
1624		}
1625		}
1626
1627		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1628		protected void realRun() throws InterruptedException {
1629	<	Thread.sleep(MEDIUM_DELAY_MS);
1629	>	delay(MEDIUM_DELAY_MS);
1630		}
1631		}
1632
1633	+	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1634	+	return new CheckedRunnable() {
1635	+	protected void realRun() {
1636	+	try {
1637	+	delay(timeoutMillis);
1638	+	} catch (InterruptedException ok) {}
1639	+	}};
1640	+	}
1641	+
1642		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1643		protected void realRun() {
1644		try {
1645	<	Thread.sleep(MEDIUM_DELAY_MS);
1645	>	delay(MEDIUM_DELAY_MS);
1646		} catch (InterruptedException ok) {}
1647		}
1648		}
#	Line 738 | Line 1650 | public class JSR166TestCase extends Test
1650		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1651		protected void realRun() {
1652		try {
1653	<	Thread.sleep(LONG_DELAY_MS);
1653	>	delay(LONG_DELAY_MS);
1654		} catch (InterruptedException ok) {}
1655		}
1656		}
#	Line 752 | Line 1664 | public class JSR166TestCase extends Test
1664		}
1665		}
1666
1667	+	public interface TrackedRunnable extends Runnable {
1668	+	boolean isDone();
1669	+	}
1670	+
1671	+	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1672	+	return new TrackedRunnable() {
1673	+	private volatile boolean done = false;
1674	+	public boolean isDone() { return done; }
1675	+	public void run() {
1676	+	try {
1677	+	delay(timeoutMillis);
1678	+	done = true;
1679	+	} catch (InterruptedException ok) {}
1680	+	}
1681	+	};
1682	+	}
1683	+
1684		public static class TrackedShortRunnable implements Runnable {
1685		public volatile boolean done = false;
1686		public void run() {
1687		try {
1688	<	Thread.sleep(SMALL_DELAY_MS);
1688	>	delay(SHORT_DELAY_MS);
1689	>	done = true;
1690	>	} catch (InterruptedException ok) {}
1691	>	}
1692	>	}
1693	>
1694	>	public static class TrackedSmallRunnable implements Runnable {
1695	>	public volatile boolean done = false;
1696	>	public void run() {
1697	>	try {
1698	>	delay(SMALL_DELAY_MS);
1699		done = true;
1700		} catch (InterruptedException ok) {}
1701		}
#	Line 766 | Line 1705 | public class JSR166TestCase extends Test
1705		public volatile boolean done = false;
1706		public void run() {
1707		try {
1708	<	Thread.sleep(MEDIUM_DELAY_MS);
1708	>	delay(MEDIUM_DELAY_MS);
1709		done = true;
1710		} catch (InterruptedException ok) {}
1711		}
#	Line 776 | Line 1715 | public class JSR166TestCase extends Test
1715		public volatile boolean done = false;
1716		public void run() {
1717		try {
1718	<	Thread.sleep(LONG_DELAY_MS);
1718	>	delay(LONG_DELAY_MS);
1719		done = true;
1720		} catch (InterruptedException ok) {}
1721		}
#	Line 793 | Line 1732 | public class JSR166TestCase extends Test
1732		public volatile boolean done = false;
1733		public Object call() {
1734		try {
1735	<	Thread.sleep(SMALL_DELAY_MS);
1735	>	delay(SMALL_DELAY_MS);
1736		done = true;
1737		} catch (InterruptedException ok) {}
1738		return Boolean.TRUE;
#	Line 806 | Line 1745 | public class JSR166TestCase extends Test
1745		public abstract class CheckedRecursiveAction extends RecursiveAction {
1746		protected abstract void realCompute() throws Throwable;
1747
1748	<	public final void compute() {
1748	>	@Override protected final void compute() {
1749		try {
1750		realCompute();
1751	<	} catch (Throwable t) {
1752	<	threadUnexpectedException(t);
1751	>	} catch (Throwable fail) {
1752	>	threadUnexpectedException(fail);
1753		}
1754		}
1755		}
#	Line 821 | Line 1760 | public class JSR166TestCase extends Test
1760		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1761		protected abstract T realCompute() throws Throwable;
1762
1763	<	public final T compute() {
1763	>	@Override protected final T compute() {
1764		try {
1765		return realCompute();
1766	<	} catch (Throwable t) {
1767	<	threadUnexpectedException(t);
1766	>	} catch (Throwable fail) {
1767	>	threadUnexpectedException(fail);
1768		return null;
1769		}
1770		}
#	Line 839 | Line 1778 | public class JSR166TestCase extends Test
1778		ThreadPoolExecutor executor) {}
1779		}
1780
1781	+	/**
1782	+	* A CyclicBarrier that uses timed await and fails with
1783	+	* AssertionFailedErrors instead of throwing checked exceptions.
1784	+	*/
1785	+	public static class CheckedBarrier extends CyclicBarrier {
1786	+	public CheckedBarrier(int parties) { super(parties); }
1787	+
1788	+	public int await() {
1789	+	try {
1790	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1791	+	} catch (TimeoutException timedOut) {
1792	+	throw new AssertionFailedError("timed out");
1793	+	} catch (Exception fail) {
1794	+	AssertionFailedError afe =
1795	+	new AssertionFailedError("Unexpected exception: " + fail);
1796	+	afe.initCause(fail);
1797	+	throw afe;
1798	+	}
1799	+	}
1800	+	}
1801	+
1802	+	void checkEmpty(BlockingQueue q) {
1803	+	try {
1804	+	assertTrue(q.isEmpty());
1805	+	assertEquals(0, q.size());
1806	+	assertNull(q.peek());
1807	+	assertNull(q.poll());
1808	+	assertNull(q.poll(0, MILLISECONDS));
1809	+	assertEquals(q.toString(), "[]");
1810	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1811	+	assertFalse(q.iterator().hasNext());
1812	+	try {
1813	+	q.element();
1814	+	shouldThrow();
1815	+	} catch (NoSuchElementException success) {}
1816	+	try {
1817	+	q.iterator().next();
1818	+	shouldThrow();
1819	+	} catch (NoSuchElementException success) {}
1820	+	try {
1821	+	q.remove();
1822	+	shouldThrow();
1823	+	} catch (NoSuchElementException success) {}
1824	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1825	+	}
1826	+
1827	+	void assertSerialEquals(Object x, Object y) {
1828	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1829	+	}
1830	+
1831	+	void assertNotSerialEquals(Object x, Object y) {
1832	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1833	+	}
1834	+
1835	+	byte[] serialBytes(Object o) {
1836	+	try {
1837	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1838	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1839	+	oos.writeObject(o);
1840	+	oos.flush();
1841	+	oos.close();
1842	+	return bos.toByteArray();
1843	+	} catch (Throwable fail) {
1844	+	threadUnexpectedException(fail);
1845	+	return new byte[0];
1846	+	}
1847	+	}
1848	+
1849	+	void assertImmutable(final Object o) {
1850	+	if (o instanceof Collection) {
1851	+	assertThrows(
1852	+	UnsupportedOperationException.class,
1853	+	new Runnable() { public void run() {
1854	+	((Collection) o).add(null);}});
1855	+	}
1856	+	}
1857	+
1858	+	@SuppressWarnings("unchecked")
1859	+	<T> T serialClone(T o) {
1860	+	try {
1861	+	ObjectInputStream ois = new ObjectInputStream
1862	+	(new ByteArrayInputStream(serialBytes(o)));
1863	+	T clone = (T) ois.readObject();
1864	+	if (o == clone) assertImmutable(o);
1865	+	assertSame(o.getClass(), clone.getClass());
1866	+	return clone;
1867	+	} catch (Throwable fail) {
1868	+	threadUnexpectedException(fail);
1869	+	return null;
1870	+	}
1871	+	}
1872	+
1873	+	/**
1874	+	* A version of serialClone that leaves error handling (for
1875	+	* e.g. NotSerializableException) up to the caller.
1876	+	*/
1877	+	@SuppressWarnings("unchecked")
1878	+	<T> T serialClonePossiblyFailing(T o)
1879	+	throws ReflectiveOperationException, java.io.IOException {
1880	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1881	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1882	+	oos.writeObject(o);
1883	+	oos.flush();
1884	+	oos.close();
1885	+	ObjectInputStream ois = new ObjectInputStream
1886	+	(new ByteArrayInputStream(bos.toByteArray()));
1887	+	T clone = (T) ois.readObject();
1888	+	if (o == clone) assertImmutable(o);
1889	+	assertSame(o.getClass(), clone.getClass());
1890	+	return clone;
1891	+	}
1892	+
1893	+	/**
1894	+	* If o implements Cloneable and has a public clone method,
1895	+	* returns a clone of o, else null.
1896	+	*/
1897	+	@SuppressWarnings("unchecked")
1898	+	<T> T cloneableClone(T o) {
1899	+	if (!(o instanceof Cloneable)) return null;
1900	+	final T clone;
1901	+	try {
1902	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1903	+	} catch (NoSuchMethodException ok) {
1904	+	return null;
1905	+	} catch (ReflectiveOperationException unexpected) {
1906	+	throw new Error(unexpected);
1907	+	}
1908	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1909	+	assertSame(o.getClass(), clone.getClass());
1910	+	return clone;
1911	+	}
1912	+
1913	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1914	+	Runnable... throwingActions) {
1915	+	for (Runnable throwingAction : throwingActions) {
1916	+	boolean threw = false;
1917	+	try { throwingAction.run(); }
1918	+	catch (Throwable t) {
1919	+	threw = true;
1920	+	if (!expectedExceptionClass.isInstance(t)) {
1921	+	AssertionFailedError afe =
1922	+	new AssertionFailedError
1923	+	("Expected " + expectedExceptionClass.getName() +
1924	+	", got " + t.getClass().getName());
1925	+	afe.initCause(t);
1926	+	threadUnexpectedException(afe);
1927	+	}
1928	+	}
1929	+	if (!threw)
1930	+	shouldThrow(expectedExceptionClass.getName());
1931	+	}
1932	+	}
1933	+
1934	+	public void assertIteratorExhausted(Iterator<?> it) {
1935	+	try {
1936	+	it.next();
1937	+	shouldThrow();
1938	+	} catch (NoSuchElementException success) {}
1939	+	assertFalse(it.hasNext());
1940	+	}
1941	+
1942	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1943	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1944	+	}
1945	+
1946	+	public Runnable runnableThrowing(final RuntimeException ex) {
1947	+	return new Runnable() { public void run() { throw ex; }};
1948	+	}
1949	+
1950	+	/** A reusable thread pool to be shared by tests. */
1951	+	static final ExecutorService cachedThreadPool =
1952	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1953	+	1000L, MILLISECONDS,
1954	+	new SynchronousQueue<Runnable>());
1955	+
1956	+	static <T> void shuffle(T[] array) {
1957	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1958	+	}
1959		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines