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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.58 by jsr166, Wed Oct 6 02:11:57 2010 UTC vs.
Revision 1.237 by jsr166, Wed Aug 23 05:33:00 2017 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
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5	>	* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.PropertyPermission;
12	<	import java.util.concurrent.*;
13	<	import java.util.concurrent.atomic.AtomicReference;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	+	import static java.util.concurrent.TimeUnit.MINUTES;
45	+	import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	+
47	+	import java.io.ByteArrayInputStream;
48	+	import java.io.ByteArrayOutputStream;
49	+	import java.io.ObjectInputStream;
50	+	import java.io.ObjectOutputStream;
51	+	import java.lang.management.ManagementFactory;
52	+	import java.lang.management.ThreadInfo;
53	+	import java.lang.management.ThreadMXBean;
54	+	import java.lang.reflect.Constructor;
55	+	import java.lang.reflect.Method;
56	+	import java.lang.reflect.Modifier;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 18 | Line 61 | import java.security.Permissions;
61		import java.security.Policy;
62		import java.security.ProtectionDomain;
63		import java.security.SecurityPermission;
64	+	import java.util.ArrayList;
65	+	import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68	+	import java.util.Date;
69	+	import java.util.Enumeration;
70	+	import java.util.Iterator;
71	+	import java.util.List;
72	+	import java.util.NoSuchElementException;
73	+	import java.util.PropertyPermission;
74	+	import java.util.concurrent.BlockingQueue;
75	+	import java.util.concurrent.Callable;
76	+	import java.util.concurrent.CountDownLatch;
77	+	import java.util.concurrent.CyclicBarrier;
78	+	import java.util.concurrent.ExecutionException;
79	+	import java.util.concurrent.Executor;
80	+	import java.util.concurrent.Executors;
81	+	import java.util.concurrent.ExecutorService;
82	+	import java.util.concurrent.ForkJoinPool;
83	+	import java.util.concurrent.Future;
84	+	import java.util.concurrent.FutureTask;
85	+	import java.util.concurrent.RecursiveAction;
86	+	import java.util.concurrent.RecursiveTask;
87	+	import java.util.concurrent.RejectedExecutionException;
88	+	import java.util.concurrent.RejectedExecutionHandler;
89	+	import java.util.concurrent.Semaphore;
90	+	import java.util.concurrent.ScheduledExecutorService;
91	+	import java.util.concurrent.ScheduledFuture;
92	+	import java.util.concurrent.SynchronousQueue;
93	+	import java.util.concurrent.ThreadFactory;
94	+	import java.util.concurrent.ThreadLocalRandom;
95	+	import java.util.concurrent.ThreadPoolExecutor;
96	+	import java.util.concurrent.TimeUnit;
97	+	import java.util.concurrent.TimeoutException;
98	+	import java.util.concurrent.atomic.AtomicBoolean;
99	+	import java.util.concurrent.atomic.AtomicReference;
100	+	import java.util.regex.Pattern;
101	+
102	+	import junit.framework.AssertionFailedError;
103	+	import junit.framework.Test;
104	+	import junit.framework.TestCase;
105	+	import junit.framework.TestResult;
106	+	import junit.framework.TestSuite;
107
108		/**
109		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 29 | Line 115 | import java.security.SecurityPermission;
115		*
116		* <ol>
117		*
118	<	* <li> All assertions in code running in generated threads must use
118	>	* <li>All assertions in code running in generated threads must use
119		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
120		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
121		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
122		* particularly recommended) for other code to use these forms too.
123		* Only the most typically used JUnit assertion methods are defined
124	<	* this way, but enough to live with.</li>
124	>	* this way, but enough to live with.
125		*
126	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
126	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
127		* to invoke {@code super.setUp} and {@code super.tearDown} within
128		* them. These methods are used to clear and check for thread
129	<	* assertion failures.</li>
129	>	* assertion failures.
130		*
131		* <li>All delays and timeouts must use one of the constants {@code
132		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 51 | Line 137 | import java.security.SecurityPermission;
137		* is always discriminable as larger than SHORT and smaller than
138		* MEDIUM.  And so on. These constants are set to conservative values,
139		* but even so, if there is ever any doubt, they can all be increased
140	<	* in one spot to rerun tests on slower platforms.</li>
140	>	* in one spot to rerun tests on slower platforms.
141		*
142	<	* <li> All threads generated must be joined inside each test case
142	>	* <li>All threads generated must be joined inside each test case
143		* method (or {@code fail} to do so) before returning from the
144		* method. The {@code joinPool} method can be used to do this when
145	<	* using Executors.</li>
145	>	* using Executors.
146		*
147		* </ol>
148		*
149	<	* <p> <b>Other notes</b>
149	>	* <p><b>Other notes</b>
150		* <ul>
151		*
152	<	* <li> Usually, there is one testcase method per JSR166 method
152	>	* <li>Usually, there is one testcase method per JSR166 method
153		* covering "normal" operation, and then as many exception-testing
154		* methods as there are exceptions the method can throw. Sometimes
155		* there are multiple tests per JSR166 method when the different
156		* "normal" behaviors differ significantly. And sometimes testcases
157	<	* cover multiple methods when they cannot be tested in
72	<	* isolation.</li>
157	>	* cover multiple methods when they cannot be tested in isolation.
158		*
159	<	* <li> The documentation style for testcases is to provide as javadoc
159	>	* <li>The documentation style for testcases is to provide as javadoc
160		* a simple sentence or two describing the property that the testcase
161		* method purports to test. The javadocs do not say anything about how
162	<	* the property is tested. To find out, read the code.</li>
162	>	* the property is tested. To find out, read the code.
163		*
164	<	* <li> These tests are "conformance tests", and do not attempt to
164	>	* <li>These tests are "conformance tests", and do not attempt to
165		* test throughput, latency, scalability or other performance factors
166		* (see the separate "jtreg" tests for a set intended to check these
167		* for the most central aspects of functionality.) So, most tests use
168		* the smallest sensible numbers of threads, collection sizes, etc
169	<	* needed to check basic conformance.</li>
169	>	* needed to check basic conformance.
170		*
171		* <li>The test classes currently do not declare inclusion in
172		* any particular package to simplify things for people integrating
173	<	* them in TCK test suites.</li>
173	>	* them in TCK test suites.
174		*
175	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
176	<	* runs all JSR166 unit tests.</li>
175	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
176	>	* runs all JSR166 unit tests.
177		*
178		* </ul>
179		*/
#	Line 96 | Line 181 | public class JSR166TestCase extends Test
181		private static final boolean useSecurityManager =
182		Boolean.getBoolean("jsr166.useSecurityManager");
183
184	+	protected static final boolean expensiveTests =
185	+	Boolean.getBoolean("jsr166.expensiveTests");
186	+
187	+	/**
188	+	* If true, also run tests that are not part of the official tck
189	+	* because they test unspecified implementation details.
190	+	*/
191	+	protected static final boolean testImplementationDetails =
192	+	Boolean.getBoolean("jsr166.testImplementationDetails");
193	+
194	+	/**
195	+	* If true, report on stdout all "slow" tests, that is, ones that
196	+	* take more than profileThreshold milliseconds to execute.
197	+	*/
198	+	private static final boolean profileTests =
199	+	Boolean.getBoolean("jsr166.profileTests");
200	+
201	+	/**
202	+	* The number of milliseconds that tests are permitted for
203	+	* execution without being reported, when profileTests is set.
204	+	*/
205	+	private static final long profileThreshold =
206	+	Long.getLong("jsr166.profileThreshold", 100);
207	+
208	+	/**
209	+	* The number of repetitions per test (for tickling rare bugs).
210	+	*/
211	+	private static final int runsPerTest =
212	+	Integer.getInteger("jsr166.runsPerTest", 1);
213	+
214	+	/**
215	+	* The number of repetitions of the test suite (for finding leaks?).
216	+	*/
217	+	private static final int suiteRuns =
218	+	Integer.getInteger("jsr166.suiteRuns", 1);
219	+
220		/**
221	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
221	>	* Returns the value of the system property, or NaN if not defined.
222	>	*/
223	>	private static float systemPropertyValue(String name) {
224	>	String floatString = System.getProperty(name);
225	>	if (floatString == null)
226	>	return Float.NaN;
227	>	try {
228	>	return Float.parseFloat(floatString);
229	>	} catch (NumberFormatException ex) {
230	>	throw new IllegalArgumentException(
231	>	String.format("Bad float value in system property %s=%s",
232	>	name, floatString));
233	>	}
234	>	}
235	>
236	>	/**
237	>	* The scaling factor to apply to standard delays used in tests.
238	>	* May be initialized from any of:
239	>	* - the "jsr166.delay.factor" system property
240	>	* - the "test.timeout.factor" system property (as used by jtreg)
241	>	*   See: http://openjdk.java.net/jtreg/tag-spec.html
242	>	* - hard-coded fuzz factor when using a known slowpoke VM
243	>	*/
244	>	private static final float delayFactor = delayFactor();
245	>
246	>	private static float delayFactor() {
247	>	float x;
248	>	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
249	>	return x;
250	>	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
251	>	return x;
252	>	String prop = System.getProperty("java.vm.version");
253	>	if (prop != null && prop.matches(".*debug.*"))
254	>	return 4.0f; // How much slower is fastdebug than product?!
255	>	return 1.0f;
256	>	}
257	>
258	>	public JSR166TestCase() { super(); }
259	>	public JSR166TestCase(String name) { super(name); }
260	>
261	>	/**
262	>	* A filter for tests to run, matching strings of the form
263	>	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
264	>	* Usefully combined with jsr166.runsPerTest.
265	>	*/
266	>	private static final Pattern methodFilter = methodFilter();
267	>
268	>	private static Pattern methodFilter() {
269	>	String regex = System.getProperty("jsr166.methodFilter");
270	>	return (regex == null) ? null : Pattern.compile(regex);
271	>	}
272	>
273	>	// Instrumentation to debug very rare, but very annoying hung test runs.
274	>	static volatile TestCase currentTestCase;
275	>	// static volatile int currentRun = 0;
276	>	static {
277	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
278	>	// Avoid spurious reports with enormous runsPerTest.
279	>	// A single test case run should never take more than 1 second.
280	>	// But let's cap it at the high end too ...
281	>	final int timeoutMinutes =
282	>	Math.min(15, Math.max(runsPerTest / 60, 1));
283	>	for (TestCase lastTestCase = currentTestCase;;) {
284	>	try { MINUTES.sleep(timeoutMinutes); }
285	>	catch (InterruptedException unexpected) { break; }
286	>	if (lastTestCase == currentTestCase) {
287	>	System.err.printf(
288	>	"Looks like we're stuck running test: %s%n",
289	>	lastTestCase);
290	>	//                     System.err.printf(
291	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
292	>	//                         lastTestCase, currentRun, runsPerTest);
293	>	//                     System.err.println("availableProcessors=" +
294	>	//                         Runtime.getRuntime().availableProcessors());
295	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
296	>	dumpTestThreads();
297	>	// one stack dump is probably enough; more would be spam
298	>	break;
299	>	}
300	>	lastTestCase = currentTestCase;
301	>	}}};
302	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
303	>	thread.setDaemon(true);
304	>	thread.start();
305	>	}
306	>
307	>	//     public static String cpuModel() {
308	>	//         try {
309	>	//             java.util.regex.Matcher matcher
310	>	//               = Pattern.compile("model name\\s*: (.*)")
311	>	//                 .matcher(new String(
312	>	//                     java.nio.file.Files.readAllBytes(
313	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
314	>	//             matcher.find();
315	>	//             return matcher.group(1);
316	>	//         } catch (Exception ex) { return null; }
317	>	//     }
318	>
319	>	public void runBare() throws Throwable {
320	>	currentTestCase = this;
321	>	if (methodFilter == null
322	>	|| methodFilter.matcher(toString()).find())
323	>	super.runBare();
324	>	}
325	>
326	>	protected void runTest() throws Throwable {
327	>	for (int i = 0; i < runsPerTest; i++) {
328	>	// currentRun = i;
329	>	if (profileTests)
330	>	runTestProfiled();
331	>	else
332	>	super.runTest();
333	>	}
334	>	}
335	>
336	>	protected void runTestProfiled() throws Throwable {
337	>	for (int i = 0; i < 2; i++) {
338	>	long startTime = System.nanoTime();
339	>	super.runTest();
340	>	long elapsedMillis = millisElapsedSince(startTime);
341	>	if (elapsedMillis < profileThreshold)
342	>	break;
343	>	// Never report first run of any test; treat it as a
344	>	// warmup run, notably to trigger all needed classloading,
345	>	if (i > 0)
346	>	System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
347	>	}
348	>	}
349	>
350	>	/**
351	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
352		*/
353		public static void main(String[] args) {
354	+	main(suite(), args);
355	+	}
356	+
357	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
358	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
359	+	long runTime;
360	+	public void startTest(Test test) {}
361	+	protected void printHeader(long runTime) {
362	+	this.runTime = runTime; // defer printing for later
363	+	}
364	+	protected void printFooter(TestResult result) {
365	+	if (result.wasSuccessful()) {
366	+	getWriter().println("OK (" + result.runCount() + " tests)"
367	+	+ "  Time: " + elapsedTimeAsString(runTime));
368	+	} else {
369	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
370	+	super.printFooter(result);
371	+	}
372	+	}
373	+	}
374	+
375	+	/**
376	+	* Returns a TestRunner that doesn't bother with unnecessary
377	+	* fluff, like printing a "." for each test case.
378	+	*/
379	+	static junit.textui.TestRunner newPithyTestRunner() {
380	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
381	+	runner.setPrinter(new PithyResultPrinter(System.out));
382	+	return runner;
383	+	}
384	+
385	+	/**
386	+	* Runs all unit tests in the given test suite.
387	+	* Actual behavior influenced by jsr166.* system properties.
388	+	*/
389	+	static void main(Test suite, String[] args) {
390		if (useSecurityManager) {
391		System.err.println("Setting a permissive security manager");
392		Policy.setPolicy(permissivePolicy());
393		System.setSecurityManager(new SecurityManager());
394		}
395	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
396	<
397	<	Test s = suite();
398	<	for (int i = 0; i < iters; ++i) {
112	<	junit.textui.TestRunner.run(s);
395	>	for (int i = 0; i < suiteRuns; i++) {
396	>	TestResult result = newPithyTestRunner().doRun(suite);
397	>	if (!result.wasSuccessful())
398	>	System.exit(1);
399		System.gc();
400		System.runFinalization();
401		}
402	<	System.exit(0);
402	>	}
403	>
404	>	public static TestSuite newTestSuite(Object... suiteOrClasses) {
405	>	TestSuite suite = new TestSuite();
406	>	for (Object suiteOrClass : suiteOrClasses) {
407	>	if (suiteOrClass instanceof TestSuite)
408	>	suite.addTest((TestSuite) suiteOrClass);
409	>	else if (suiteOrClass instanceof Class)
410	>	suite.addTest(new TestSuite((Class<?>) suiteOrClass));
411	>	else
412	>	throw new ClassCastException("not a test suite or class");
413	>	}
414	>	return suite;
415	>	}
416	>
417	>	public static void addNamedTestClasses(TestSuite suite,
418	>	String... testClassNames) {
419	>	for (String testClassName : testClassNames) {
420	>	try {
421	>	Class<?> testClass = Class.forName(testClassName);
422	>	Method m = testClass.getDeclaredMethod("suite",
423	>	new Class<?>[0]);
424	>	suite.addTest(newTestSuite((Test)m.invoke(null)));
425	>	} catch (Exception e) {
426	>	throw new Error("Missing test class", e);
427	>	}
428	>	}
429	>	}
430	>
431	>	public static final double JAVA_CLASS_VERSION;
432	>	public static final String JAVA_SPECIFICATION_VERSION;
433	>	static {
434	>	try {
435	>	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
436	>	new java.security.PrivilegedAction<Double>() {
437	>	public Double run() {
438	>	return Double.valueOf(System.getProperty("java.class.version"));}});
439	>	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
440	>	new java.security.PrivilegedAction<String>() {
441	>	public String run() {
442	>	return System.getProperty("java.specification.version");}});
443	>	} catch (Throwable t) {
444	>	throw new Error(t);
445	>	}
446	>	}
447	>
448	>	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
449	>	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
450	>	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
451	>	public static boolean atLeastJava9() {
452	>	return JAVA_CLASS_VERSION >= 53.0
453	>	// As of 2015-09, java9 still uses 52.0 class file version
454	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
455	>	}
456	>	public static boolean atLeastJava10() {
457	>	return JAVA_CLASS_VERSION >= 54.0
458	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
459		}
460
461		/**
462	<	* Collects all JSR166 unit tests as one suite
462	>	* Collects all JSR166 unit tests as one suite.
463		*/
464		public static Test suite() {
465	<	TestSuite suite = new TestSuite("JSR166 Unit Tests");
466	<
467	<	suite.addTest(ForkJoinPoolTest.suite());
468	<	suite.addTest(ForkJoinTaskTest.suite());
469	<	suite.addTest(RecursiveActionTest.suite());
470	<	suite.addTest(RecursiveTaskTest.suite());
471	<	suite.addTest(LinkedTransferQueueTest.suite());
472	<	suite.addTest(PhaserTest.suite());
473	<	suite.addTest(ThreadLocalRandomTest.suite());
474	<	suite.addTest(AbstractExecutorServiceTest.suite());
475	<	suite.addTest(AbstractQueueTest.suite());
476	<	suite.addTest(AbstractQueuedSynchronizerTest.suite());
477	<	suite.addTest(AbstractQueuedLongSynchronizerTest.suite());
478	<	suite.addTest(ArrayBlockingQueueTest.suite());
479	<	suite.addTest(ArrayDequeTest.suite());
480	<	suite.addTest(AtomicBooleanTest.suite());
481	<	suite.addTest(AtomicIntegerArrayTest.suite());
482	<	suite.addTest(AtomicIntegerFieldUpdaterTest.suite());
483	<	suite.addTest(AtomicIntegerTest.suite());
484	<	suite.addTest(AtomicLongArrayTest.suite());
485	<	suite.addTest(AtomicLongFieldUpdaterTest.suite());
486	<	suite.addTest(AtomicLongTest.suite());
487	<	suite.addTest(AtomicMarkableReferenceTest.suite());
488	<	suite.addTest(AtomicReferenceArrayTest.suite());
489	<	suite.addTest(AtomicReferenceFieldUpdaterTest.suite());
490	<	suite.addTest(AtomicReferenceTest.suite());
491	<	suite.addTest(AtomicStampedReferenceTest.suite());
492	<	suite.addTest(ConcurrentHashMapTest.suite());
493	<	suite.addTest(ConcurrentLinkedDequeTest.suite());
494	<	suite.addTest(ConcurrentLinkedQueueTest.suite());
495	<	suite.addTest(ConcurrentSkipListMapTest.suite());
496	<	suite.addTest(ConcurrentSkipListSubMapTest.suite());
497	<	suite.addTest(ConcurrentSkipListSetTest.suite());
498	<	suite.addTest(ConcurrentSkipListSubSetTest.suite());
499	<	suite.addTest(CopyOnWriteArrayListTest.suite());
500	<	suite.addTest(CopyOnWriteArraySetTest.suite());
501	<	suite.addTest(CountDownLatchTest.suite());
502	<	suite.addTest(CyclicBarrierTest.suite());
503	<	suite.addTest(DelayQueueTest.suite());
504	<	suite.addTest(EntryTest.suite());
505	<	suite.addTest(ExchangerTest.suite());
506	<	suite.addTest(ExecutorsTest.suite());
507	<	suite.addTest(ExecutorCompletionServiceTest.suite());
508	<	suite.addTest(FutureTaskTest.suite());
509	<	suite.addTest(LinkedBlockingDequeTest.suite());
510	<	suite.addTest(LinkedBlockingQueueTest.suite());
511	<	suite.addTest(LinkedListTest.suite());
512	<	suite.addTest(LockSupportTest.suite());
513	<	suite.addTest(PriorityBlockingQueueTest.suite());
514	<	suite.addTest(PriorityQueueTest.suite());
515	<	suite.addTest(ReentrantLockTest.suite());
516	<	suite.addTest(ReentrantReadWriteLockTest.suite());
517	<	suite.addTest(ScheduledExecutorTest.suite());
518	<	suite.addTest(ScheduledExecutorSubclassTest.suite());
519	<	suite.addTest(SemaphoreTest.suite());
520	<	suite.addTest(SynchronousQueueTest.suite());
521	<	suite.addTest(SystemTest.suite());
522	<	suite.addTest(ThreadLocalTest.suite());
523	<	suite.addTest(ThreadPoolExecutorTest.suite());
524	<	suite.addTest(ThreadPoolExecutorSubclassTest.suite());
525	<	suite.addTest(ThreadTest.suite());
526	<	suite.addTest(TimeUnitTest.suite());
527	<	suite.addTest(TreeMapTest.suite());
528	<	suite.addTest(TreeSetTest.suite());
529	<	suite.addTest(TreeSubMapTest.suite());
530	<	suite.addTest(TreeSubSetTest.suite());
465	>	// Java7+ test classes
466	>	TestSuite suite = newTestSuite(
467	>	ForkJoinPoolTest.suite(),
468	>	ForkJoinTaskTest.suite(),
469	>	RecursiveActionTest.suite(),
470	>	RecursiveTaskTest.suite(),
471	>	LinkedTransferQueueTest.suite(),
472	>	PhaserTest.suite(),
473	>	ThreadLocalRandomTest.suite(),
474	>	AbstractExecutorServiceTest.suite(),
475	>	AbstractQueueTest.suite(),
476	>	AbstractQueuedSynchronizerTest.suite(),
477	>	AbstractQueuedLongSynchronizerTest.suite(),
478	>	ArrayBlockingQueueTest.suite(),
479	>	ArrayDequeTest.suite(),
480	>	ArrayListTest.suite(),
481	>	AtomicBooleanTest.suite(),
482	>	AtomicIntegerArrayTest.suite(),
483	>	AtomicIntegerFieldUpdaterTest.suite(),
484	>	AtomicIntegerTest.suite(),
485	>	AtomicLongArrayTest.suite(),
486	>	AtomicLongFieldUpdaterTest.suite(),
487	>	AtomicLongTest.suite(),
488	>	AtomicMarkableReferenceTest.suite(),
489	>	AtomicReferenceArrayTest.suite(),
490	>	AtomicReferenceFieldUpdaterTest.suite(),
491	>	AtomicReferenceTest.suite(),
492	>	AtomicStampedReferenceTest.suite(),
493	>	ConcurrentHashMapTest.suite(),
494	>	ConcurrentLinkedDequeTest.suite(),
495	>	ConcurrentLinkedQueueTest.suite(),
496	>	ConcurrentSkipListMapTest.suite(),
497	>	ConcurrentSkipListSubMapTest.suite(),
498	>	ConcurrentSkipListSetTest.suite(),
499	>	ConcurrentSkipListSubSetTest.suite(),
500	>	CopyOnWriteArrayListTest.suite(),
501	>	CopyOnWriteArraySetTest.suite(),
502	>	CountDownLatchTest.suite(),
503	>	CountedCompleterTest.suite(),
504	>	CyclicBarrierTest.suite(),
505	>	DelayQueueTest.suite(),
506	>	EntryTest.suite(),
507	>	ExchangerTest.suite(),
508	>	ExecutorsTest.suite(),
509	>	ExecutorCompletionServiceTest.suite(),
510	>	FutureTaskTest.suite(),
511	>	LinkedBlockingDequeTest.suite(),
512	>	LinkedBlockingQueueTest.suite(),
513	>	LinkedListTest.suite(),
514	>	LockSupportTest.suite(),
515	>	PriorityBlockingQueueTest.suite(),
516	>	PriorityQueueTest.suite(),
517	>	ReentrantLockTest.suite(),
518	>	ReentrantReadWriteLockTest.suite(),
519	>	ScheduledExecutorTest.suite(),
520	>	ScheduledExecutorSubclassTest.suite(),
521	>	SemaphoreTest.suite(),
522	>	SynchronousQueueTest.suite(),
523	>	SystemTest.suite(),
524	>	ThreadLocalTest.suite(),
525	>	ThreadPoolExecutorTest.suite(),
526	>	ThreadPoolExecutorSubclassTest.suite(),
527	>	ThreadTest.suite(),
528	>	TimeUnitTest.suite(),
529	>	TreeMapTest.suite(),
530	>	TreeSetTest.suite(),
531	>	TreeSubMapTest.suite(),
532	>	TreeSubSetTest.suite(),
533	>	VectorTest.suite());
534	>
535	>	// Java8+ test classes
536	>	if (atLeastJava8()) {
537	>	String[] java8TestClassNames = {
538	>	"ArrayDeque8Test",
539	>	"Atomic8Test",
540	>	"CompletableFutureTest",
541	>	"ConcurrentHashMap8Test",
542	>	"CountedCompleter8Test",
543	>	"DoubleAccumulatorTest",
544	>	"DoubleAdderTest",
545	>	"ForkJoinPool8Test",
546	>	"ForkJoinTask8Test",
547	>	"HashMapTest",
548	>	"LinkedBlockingDeque8Test",
549	>	"LinkedBlockingQueue8Test",
550	>	"LongAccumulatorTest",
551	>	"LongAdderTest",
552	>	"SplittableRandomTest",
553	>	"StampedLockTest",
554	>	"SubmissionPublisherTest",
555	>	"ThreadLocalRandom8Test",
556	>	"TimeUnit8Test",
557	>	};
558	>	addNamedTestClasses(suite, java8TestClassNames);
559	>	}
560	>
561	>	// Java9+ test classes
562	>	if (atLeastJava9()) {
563	>	String[] java9TestClassNames = {
564	>	"AtomicBoolean9Test",
565	>	"AtomicInteger9Test",
566	>	"AtomicIntegerArray9Test",
567	>	"AtomicLong9Test",
568	>	"AtomicLongArray9Test",
569	>	"AtomicReference9Test",
570	>	"AtomicReferenceArray9Test",
571	>	"ExecutorCompletionService9Test",
572	>	"ForkJoinPool9Test",
573	>	};
574	>	addNamedTestClasses(suite, java9TestClassNames);
575	>	}
576
577		return suite;
578		}
579
580	+	/** Returns list of junit-style test method names in given class. */
581	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
582	+	Method[] methods = testClass.getDeclaredMethods();
583	+	ArrayList<String> names = new ArrayList<>(methods.length);
584	+	for (Method method : methods) {
585	+	if (method.getName().startsWith("test")
586	+	&& Modifier.isPublic(method.getModifiers())
587	+	// method.getParameterCount() requires jdk8+
588	+	&& method.getParameterTypes().length == 0) {
589	+	names.add(method.getName());
590	+	}
591	+	}
592	+	return names;
593	+	}
594	+
595	+	/**
596	+	* Returns junit-style testSuite for the given test class, but
597	+	* parameterized by passing extra data to each test.
598	+	*/
599	+	public static <ExtraData> Test parameterizedTestSuite
600	+	(Class<? extends JSR166TestCase> testClass,
601	+	Class<ExtraData> dataClass,
602	+	ExtraData data) {
603	+	try {
604	+	TestSuite suite = new TestSuite();
605	+	Constructor c =
606	+	testClass.getDeclaredConstructor(dataClass, String.class);
607	+	for (String methodName : testMethodNames(testClass))
608	+	suite.addTest((Test) c.newInstance(data, methodName));
609	+	return suite;
610	+	} catch (Exception e) {
611	+	throw new Error(e);
612	+	}
613	+	}
614	+
615	+	/**
616	+	* Returns junit-style testSuite for the jdk8 extension of the
617	+	* given test class, but parameterized by passing extra data to
618	+	* each test.  Uses reflection to allow compilation in jdk7.
619	+	*/
620	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
621	+	(Class<? extends JSR166TestCase> testClass,
622	+	Class<ExtraData> dataClass,
623	+	ExtraData data) {
624	+	if (atLeastJava8()) {
625	+	String name = testClass.getName();
626	+	String name8 = name.replaceAll("Test$", "8Test");
627	+	if (name.equals(name8)) throw new Error(name);
628	+	try {
629	+	return (Test)
630	+	Class.forName(name8)
631	+	.getMethod("testSuite", new Class[] { dataClass })
632	+	.invoke(null, data);
633	+	} catch (Exception e) {
634	+	throw new Error(e);
635	+	}
636	+	} else {
637	+	return new TestSuite();
638	+	}
639	+	}
640	+
641	+	// Delays for timing-dependent tests, in milliseconds.
642
643		public static long SHORT_DELAY_MS;
644		public static long SMALL_DELAY_MS;
645		public static long MEDIUM_DELAY_MS;
646		public static long LONG_DELAY_MS;
647
648	+	private static final long RANDOM_TIMEOUT;
649	+	private static final long RANDOM_EXPIRED_TIMEOUT;
650	+	private static final TimeUnit RANDOM_TIMEUNIT;
651	+	static {
652	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
653	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
654	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
655	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
656	+	TimeUnit[] timeUnits = TimeUnit.values();
657	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
658	+	}
659	+
660	+	/**
661	+	* Returns a timeout for use when any value at all will do.
662	+	*/
663	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
664	+
665	+	/**
666	+	* Returns a timeout that means "no waiting", i.e. not positive.
667	+	*/
668	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
669	+
670	+	/**
671	+	* Returns a random non-null TimeUnit.
672	+	*/
673	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
674
675		/**
676	<	* Returns the shortest timed delay. This could
677	<	* be reimplemented to use for example a Property.
676	>	* Returns the shortest timed delay. This can be scaled up for
677	>	* slow machines using the jsr166.delay.factor system property,
678	>	* or via jtreg's -timeoutFactor: flag.
679	>	* http://openjdk.java.net/jtreg/command-help.html
680		*/
681		protected long getShortDelay() {
682	<	return 50;
682	>	return (long) (50 * delayFactor);
683		}
684
208	–
685		/**
686		* Sets delays as multiples of SHORT_DELAY.
687		*/
#	Line 213 | Line 689 | public class JSR166TestCase extends Test
689		SHORT_DELAY_MS = getShortDelay();
690		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
691		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
692	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
692	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
693	>	}
694	>
695	>	private static final long TIMEOUT_DELAY_MS
696	>	= (long) (12.0 * Math.cbrt(delayFactor));
697	>
698	>	/**
699	>	* Returns a timeout in milliseconds to be used in tests that verify
700	>	* that operations block or time out.  We want this to be longer
701	>	* than the OS scheduling quantum, but not too long, so don't scale
702	>	* linearly with delayFactor; we use "crazy" cube root instead.
703	>	*/
704	>	static long timeoutMillis() {
705	>	return TIMEOUT_DELAY_MS;
706	>	}
707	>
708	>	/**
709	>	* Returns a new Date instance representing a time at least
710	>	* delayMillis milliseconds in the future.
711	>	*/
712	>	Date delayedDate(long delayMillis) {
713	>	// Add 1 because currentTimeMillis is known to round into the past.
714	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
715		}
716
717		/**
718		* The first exception encountered if any threadAssertXXX method fails.
719		*/
720		private final AtomicReference<Throwable> threadFailure
721	<	= new AtomicReference<Throwable>(null);
721	>	= new AtomicReference<>(null);
722
723		/**
724		* Records an exception so that it can be rethrown later in the test
#	Line 229 | Line 727 | public class JSR166TestCase extends Test
727		* the same test have no effect.
728		*/
729		public void threadRecordFailure(Throwable t) {
730	+	System.err.println(t);
731	+	dumpTestThreads();
732		threadFailure.compareAndSet(null, t);
733		}
734
#	Line 236 | Line 736 | public class JSR166TestCase extends Test
736		setDelays();
737		}
738
739	+	void tearDownFail(String format, Object... args) {
740	+	String msg = toString() + ": " + String.format(format, args);
741	+	System.err.println(msg);
742	+	dumpTestThreads();
743	+	throw new AssertionFailedError(msg);
744	+	}
745	+
746		/**
747	+	* Extra checks that get done for all test cases.
748	+	*
749		* Triggers test case failure if any thread assertions have failed,
750		* by rethrowing, in the test harness thread, any exception recorded
751		* earlier by threadRecordFailure.
752	+	*
753	+	* Triggers test case failure if interrupt status is set in the main thread.
754		*/
755		public void tearDown() throws Exception {
756	<	Throwable t = threadFailure.get();
756	>	Throwable t = threadFailure.getAndSet(null);
757		if (t != null) {
758		if (t instanceof Error)
759		throw (Error) t;
#	Line 257 | Line 768 | public class JSR166TestCase extends Test
768		throw afe;
769		}
770		}
771	+
772	+	if (Thread.interrupted())
773	+	tearDownFail("interrupt status set in main thread");
774	+
775	+	checkForkJoinPoolThreadLeaks();
776	+	}
777	+
778	+	/**
779	+	* Finds missing PoolCleaners
780	+	*/
781	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
782	+	Thread[] survivors = new Thread[7];
783	+	int count = Thread.enumerate(survivors);
784	+	for (int i = 0; i < count; i++) {
785	+	Thread thread = survivors[i];
786	+	String name = thread.getName();
787	+	if (name.startsWith("ForkJoinPool-")) {
788	+	// give thread some time to terminate
789	+	thread.join(LONG_DELAY_MS);
790	+	if (thread.isAlive())
791	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
792	+	thread);
793	+	}
794	+	}
795	+
796	+	if (!ForkJoinPool.commonPool()
797	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
798	+	tearDownFail("ForkJoin common pool thread stuck");
799		}
800
801		/**
#	Line 269 | Line 808 | public class JSR166TestCase extends Test
808		fail(reason);
809		} catch (AssertionFailedError t) {
810		threadRecordFailure(t);
811	<	fail(reason);
811	>	throw t;
812		}
813		}
814
#	Line 337 | Line 876 | public class JSR166TestCase extends Test
876		public void threadAssertEquals(Object x, Object y) {
877		try {
878		assertEquals(x, y);
879	<	} catch (AssertionFailedError t) {
880	<	threadRecordFailure(t);
881	<	throw t;
882	<	} catch (Throwable t) {
883	<	threadUnexpectedException(t);
879	>	} catch (AssertionFailedError fail) {
880	>	threadRecordFailure(fail);
881	>	throw fail;
882	>	} catch (Throwable fail) {
883	>	threadUnexpectedException(fail);
884		}
885		}
886
#	Line 353 | Line 892 | public class JSR166TestCase extends Test
892		public void threadAssertSame(Object x, Object y) {
893		try {
894		assertSame(x, y);
895	<	} catch (AssertionFailedError t) {
896	<	threadRecordFailure(t);
897	<	throw t;
895	>	} catch (AssertionFailedError fail) {
896	>	threadRecordFailure(fail);
897	>	throw fail;
898		}
899		}
900
#	Line 388 | Line 927 | public class JSR166TestCase extends Test
927		else {
928		AssertionFailedError afe =
929		new AssertionFailedError("unexpected exception: " + t);
930	<	t.initCause(t);
930	>	afe.initCause(t);
931		throw afe;
932		}
933		}
934
935		/**
936	+	* Delays, via Thread.sleep, for the given millisecond delay, but
937	+	* if the sleep is shorter than specified, may re-sleep or yield
938	+	* until time elapses.  Ensures that the given time, as measured
939	+	* by System.nanoTime(), has elapsed.
940	+	*/
941	+	static void delay(long millis) throws InterruptedException {
942	+	long nanos = millis * (1000 * 1000);
943	+	final long wakeupTime = System.nanoTime() + nanos;
944	+	do {
945	+	if (millis > 0L)
946	+	Thread.sleep(millis);
947	+	else // too short to sleep
948	+	Thread.yield();
949	+	nanos = wakeupTime - System.nanoTime();
950	+	millis = nanos / (1000 * 1000);
951	+	} while (nanos >= 0L);
952	+	}
953	+
954	+	/**
955	+	* Allows use of try-with-resources with per-test thread pools.
956	+	*/
957	+	class PoolCleaner implements AutoCloseable {
958	+	private final ExecutorService pool;
959	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
960	+	public void close() { joinPool(pool); }
961	+	}
962	+
963	+	/**
964	+	* An extension of PoolCleaner that has an action to release the pool.
965	+	*/
966	+	class PoolCleanerWithReleaser extends PoolCleaner {
967	+	private final Runnable releaser;
968	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
969	+	super(pool);
970	+	this.releaser = releaser;
971	+	}
972	+	public void close() {
973	+	try {
974	+	releaser.run();
975	+	} finally {
976	+	super.close();
977	+	}
978	+	}
979	+	}
980	+
981	+	PoolCleaner cleaner(ExecutorService pool) {
982	+	return new PoolCleaner(pool);
983	+	}
984	+
985	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
986	+	return new PoolCleanerWithReleaser(pool, releaser);
987	+	}
988	+
989	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
990	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
991	+	}
992	+
993	+	Runnable releaser(final CountDownLatch latch) {
994	+	return new Runnable() { public void run() {
995	+	do { latch.countDown(); }
996	+	while (latch.getCount() > 0);
997	+	}};
998	+	}
999	+
1000	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1001	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1002	+	}
1003	+
1004	+	Runnable releaser(final AtomicBoolean flag) {
1005	+	return new Runnable() { public void run() { flag.set(true); }};
1006	+	}
1007	+
1008	+	/**
1009		* Waits out termination of a thread pool or fails doing so.
1010		*/
1011	<	public void joinPool(ExecutorService exec) {
1011	>	void joinPool(ExecutorService pool) {
1012		try {
1013	<	exec.shutdown();
1014	<	assertTrue("ExecutorService did not terminate in a timely manner",
1015	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1013	>	pool.shutdown();
1014	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1015	>	try {
1016	>	threadFail("ExecutorService " + pool +
1017	>	" did not terminate in a timely manner");
1018	>	} finally {
1019	>	// last resort, for the benefit of subsequent tests
1020	>	pool.shutdownNow();
1021	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1022	>	}
1023	>	}
1024		} catch (SecurityException ok) {
1025		// Allowed in case test doesn't have privs
1026	<	} catch (InterruptedException ie) {
1027	<	fail("Unexpected InterruptedException");
1026	>	} catch (InterruptedException fail) {
1027	>	threadFail("Unexpected InterruptedException");
1028	>	}
1029	>	}
1030	>
1031	>	/**
1032	>	* Like Runnable, but with the freedom to throw anything.
1033	>	* junit folks had the same idea:
1034	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1035	>	*/
1036	>	interface Action { public void run() throws Throwable; }
1037	>
1038	>	/**
1039	>	* Runs all the given actions in parallel, failing if any fail.
1040	>	* Useful for running multiple variants of tests that are
1041	>	* necessarily individually slow because they must block.
1042	>	*/
1043	>	void testInParallel(Action ... actions) {
1044	>	ExecutorService pool = Executors.newCachedThreadPool();
1045	>	try (PoolCleaner cleaner = cleaner(pool)) {
1046	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1047	>	for (final Action action : actions)
1048	>	futures.add(pool.submit(new CheckedRunnable() {
1049	>	public void realRun() throws Throwable { action.run();}}));
1050	>	for (Future<?> future : futures)
1051	>	try {
1052	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1053	>	} catch (ExecutionException ex) {
1054	>	threadUnexpectedException(ex.getCause());
1055	>	} catch (Exception ex) {
1056	>	threadUnexpectedException(ex);
1057	>	}
1058	>	}
1059	>	}
1060	>
1061	>	/**
1062	>	* A debugging tool to print stack traces of most threads, as jstack does.
1063	>	* Uninteresting threads are filtered out.
1064	>	*/
1065	>	static void dumpTestThreads() {
1066	>	SecurityManager sm = System.getSecurityManager();
1067	>	if (sm != null) {
1068	>	try {
1069	>	System.setSecurityManager(null);
1070	>	} catch (SecurityException giveUp) {
1071	>	return;
1072	>	}
1073		}
1074	+
1075	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1076	+	System.err.println("------ stacktrace dump start ------");
1077	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1078	+	final String name = info.getThreadName();
1079	+	String lockName;
1080	+	if ("Signal Dispatcher".equals(name))
1081	+	continue;
1082	+	if ("Reference Handler".equals(name)
1083	+	&& (lockName = info.getLockName()) != null
1084	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1085	+	continue;
1086	+	if ("Finalizer".equals(name)
1087	+	&& (lockName = info.getLockName()) != null
1088	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1089	+	continue;
1090	+	if ("checkForWedgedTest".equals(name))
1091	+	continue;
1092	+	System.err.print(info);
1093	+	}
1094	+	System.err.println("------ stacktrace dump end ------");
1095	+
1096	+	if (sm != null) System.setSecurityManager(sm);
1097	+	}
1098	+
1099	+	/**
1100	+	* Checks that thread eventually enters the expected blocked thread state.
1101	+	*/
1102	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1103	+	// always sleep at least 1 ms, with high probability avoiding
1104	+	// transitory states
1105	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1106	+	try { delay(1); }
1107	+	catch (InterruptedException fail) {
1108	+	fail("Unexpected InterruptedException");
1109	+	}
1110	+	Thread.State s = thread.getState();
1111	+	if (s == expected)
1112	+	return;
1113	+	else if (s == Thread.State.TERMINATED)
1114	+	fail("Unexpected thread termination");
1115	+	}
1116	+	fail("timed out waiting for thread to enter thread state " + expected);
1117		}
1118
1119	+	/**
1120	+	* Checks that future.get times out, with the default timeout of
1121	+	* {@code timeoutMillis()}.
1122	+	*/
1123	+	void assertFutureTimesOut(Future future) {
1124	+	assertFutureTimesOut(future, timeoutMillis());
1125	+	}
1126	+
1127	+	/**
1128	+	* Checks that future.get times out, with the given millisecond timeout.
1129	+	*/
1130	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1131	+	long startTime = System.nanoTime();
1132	+	try {
1133	+	future.get(timeoutMillis, MILLISECONDS);
1134	+	shouldThrow();
1135	+	} catch (TimeoutException success) {
1136	+	} catch (Exception fail) {
1137	+	threadUnexpectedException(fail);
1138	+	} finally { future.cancel(true); }
1139	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1140	+	}
1141
1142		/**
1143		* Fails with message "should throw exception".
#	Line 424 | Line 1154 | public class JSR166TestCase extends Test
1154		}
1155
1156		/**
1157	+	* The maximum number of consecutive spurious wakeups we should
1158	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1159	+	*/
1160	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1161	+
1162	+	/**
1163		* The number of elements to place in collections, arrays, etc.
1164		*/
1165		public static final int SIZE = 20;
#	Line 448 | Line 1184 | public class JSR166TestCase extends Test
1184		public static final Integer m6  = new Integer(-6);
1185		public static final Integer m10 = new Integer(-10);
1186
451	–
1187		/**
1188		* Runs Runnable r with a security policy that permits precisely
1189		* the specified permissions.  If there is no current security
#	Line 460 | Line 1195 | public class JSR166TestCase extends Test
1195		SecurityManager sm = System.getSecurityManager();
1196		if (sm == null) {
1197		r.run();
1198	+	}
1199	+	runWithSecurityManagerWithPermissions(r, permissions);
1200	+	}
1201	+
1202	+	/**
1203	+	* Runs Runnable r with a security policy that permits precisely
1204	+	* the specified permissions.  If there is no current security
1205	+	* manager, a temporary one is set for the duration of the
1206	+	* Runnable.  We require that any security manager permit
1207	+	* getPolicy/setPolicy.
1208	+	*/
1209	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1210	+	Permission... permissions) {
1211	+	SecurityManager sm = System.getSecurityManager();
1212	+	if (sm == null) {
1213		Policy savedPolicy = Policy.getPolicy();
1214		try {
1215		Policy.setPolicy(permissivePolicy());
1216		System.setSecurityManager(new SecurityManager());
1217	<	runWithPermissions(r, permissions);
1217	>	runWithSecurityManagerWithPermissions(r, permissions);
1218		} finally {
1219		System.setSecurityManager(null);
1220		Policy.setPolicy(savedPolicy);
#	Line 512 | Line 1262 | public class JSR166TestCase extends Test
1262		return perms.implies(p);
1263		}
1264		public void refresh() {}
1265	+	public String toString() {
1266	+	List<Permission> ps = new ArrayList<>();
1267	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1268	+	ps.add(e.nextElement());
1269	+	return "AdjustablePolicy with permissions " + ps;
1270	+	}
1271		}
1272
1273		/**
#	Line 534 | Line 1290 | public class JSR166TestCase extends Test
1290		}
1291
1292		/**
1293	<	* Sleep until the timeout has elapsed, or interrupted.
1294	<	* Does <em>NOT</em> throw InterruptedException.
1293	>	* Sleeps until the given time has elapsed.
1294	>	* Throws AssertionFailedError if interrupted.
1295	>	*/
1296	>	static void sleep(long millis) {
1297	>	try {
1298	>	delay(millis);
1299	>	} catch (InterruptedException fail) {
1300	>	AssertionFailedError afe =
1301	>	new AssertionFailedError("Unexpected InterruptedException");
1302	>	afe.initCause(fail);
1303	>	throw afe;
1304	>	}
1305	>	}
1306	>
1307	>	/**
1308	>	* Spin-waits up to the specified number of milliseconds for the given
1309	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1310	>	*/
1311	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1312	>	long startTime = 0L;
1313	>	for (;;) {
1314	>	Thread.State s = thread.getState();
1315	>	if (s == Thread.State.BLOCKED ||
1316	>	s == Thread.State.WAITING ||
1317	>	s == Thread.State.TIMED_WAITING)
1318	>	return;
1319	>	else if (s == Thread.State.TERMINATED)
1320	>	fail("Unexpected thread termination");
1321	>	else if (startTime == 0L)
1322	>	startTime = System.nanoTime();
1323	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1324	>	threadAssertTrue(thread.isAlive());
1325	>	fail("timed out waiting for thread to enter wait state");
1326	>	}
1327	>	Thread.yield();
1328	>	}
1329	>	}
1330	>
1331	>	/**
1332	>	* Spin-waits up to the specified number of milliseconds for the given
1333	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1334	>	* and additionally satisfy the given condition.
1335	>	*/
1336	>	void waitForThreadToEnterWaitState(
1337	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1338	>	long startTime = 0L;
1339	>	for (;;) {
1340	>	Thread.State s = thread.getState();
1341	>	if (s == Thread.State.BLOCKED ||
1342	>	s == Thread.State.WAITING ||
1343	>	s == Thread.State.TIMED_WAITING) {
1344	>	try {
1345	>	if (waitingForGodot.call())
1346	>	return;
1347	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1348	>	}
1349	>	else if (s == Thread.State.TERMINATED)
1350	>	fail("Unexpected thread termination");
1351	>	else if (startTime == 0L)
1352	>	startTime = System.nanoTime();
1353	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1354	>	threadAssertTrue(thread.isAlive());
1355	>	fail("timed out waiting for thread to enter wait state");
1356	>	}
1357	>	Thread.yield();
1358	>	}
1359	>	}
1360	>
1361	>	/**
1362	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1363	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1364	>	*/
1365	>	void waitForThreadToEnterWaitState(Thread thread) {
1366	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1367	>	}
1368	>
1369	>	/**
1370	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1371	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1372	>	* and additionally satisfy the given condition.
1373	>	*/
1374	>	void waitForThreadToEnterWaitState(
1375	>	Thread thread, Callable<Boolean> waitingForGodot) {
1376	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1377	>	}
1378	>
1379	>	/**
1380	>	* Returns the number of milliseconds since time given by
1381	>	* startNanoTime, which must have been previously returned from a
1382	>	* call to {@link System#nanoTime()}.
1383	>	*/
1384	>	static long millisElapsedSince(long startNanoTime) {
1385	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1386	>	}
1387	>
1388	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1389	>	//         long startTime = System.nanoTime();
1390	>	//         try {
1391	>	//             r.run();
1392	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1393	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1394	>	//             throw new AssertionFailedError("did not return promptly");
1395	>	//     }
1396	>
1397	>	//     void assertTerminatesPromptly(Runnable r) {
1398	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1399	>	//     }
1400	>
1401	>	/**
1402	>	* Checks that timed f.get() returns the expected value, and does not
1403	>	* wait for the timeout to elapse before returning.
1404		*/
1405	<	void sleepTillInterrupted(long timeoutMillis) {
1405	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1406	>	long startTime = System.nanoTime();
1407		try {
1408	<	Thread.sleep(timeoutMillis);
1409	<	} catch (InterruptedException wakeup) {}
1408	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1409	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1410	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1411	>	throw new AssertionFailedError("timed get did not return promptly");
1412	>	}
1413	>
1414	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1415	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1416		}
1417
1418		/**
#	Line 553 | Line 1425 | public class JSR166TestCase extends Test
1425		return t;
1426		}
1427
1428	+	/**
1429	+	* Waits for the specified time (in milliseconds) for the thread
1430	+	* to terminate (using {@link Thread#join(long)}), else interrupts
1431	+	* the thread (in the hope that it may terminate later) and fails.
1432	+	*/
1433	+	void awaitTermination(Thread t, long timeoutMillis) {
1434	+	try {
1435	+	t.join(timeoutMillis);
1436	+	} catch (InterruptedException fail) {
1437	+	threadUnexpectedException(fail);
1438	+	} finally {
1439	+	if (t.getState() != Thread.State.TERMINATED) {
1440	+	t.interrupt();
1441	+	threadFail("timed out waiting for thread to terminate");
1442	+	}
1443	+	}
1444	+	}
1445	+
1446	+	/**
1447	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1448	+	* terminate (using {@link Thread#join(long)}), else interrupts
1449	+	* the thread (in the hope that it may terminate later) and fails.
1450	+	*/
1451	+	void awaitTermination(Thread t) {
1452	+	awaitTermination(t, LONG_DELAY_MS);
1453	+	}
1454	+
1455		// Some convenient Runnable classes
1456
1457		public abstract class CheckedRunnable implements Runnable {
#	Line 561 | Line 1460 | public class JSR166TestCase extends Test
1460		public final void run() {
1461		try {
1462		realRun();
1463	<	} catch (Throwable t) {
1464	<	threadUnexpectedException(t);
1463	>	} catch (Throwable fail) {
1464	>	threadUnexpectedException(fail);
1465		}
1466		}
1467		}
#	Line 615 | Line 1514 | public class JSR166TestCase extends Test
1514		realRun();
1515		threadShouldThrow("InterruptedException");
1516		} catch (InterruptedException success) {
1517	<	} catch (Throwable t) {
1518	<	threadUnexpectedException(t);
1517	>	threadAssertFalse(Thread.interrupted());
1518	>	} catch (Throwable fail) {
1519	>	threadUnexpectedException(fail);
1520		}
1521		}
1522		}
#	Line 627 | Line 1527 | public class JSR166TestCase extends Test
1527		public final T call() {
1528		try {
1529		return realCall();
1530	<	} catch (Throwable t) {
1531	<	threadUnexpectedException(t);
1530	>	} catch (Throwable fail) {
1531	>	threadUnexpectedException(fail);
1532		return null;
1533		}
1534		}
#	Line 644 | Line 1544 | public class JSR166TestCase extends Test
1544		threadShouldThrow("InterruptedException");
1545		return result;
1546		} catch (InterruptedException success) {
1547	<	} catch (Throwable t) {
1548	<	threadUnexpectedException(t);
1547	>	threadAssertFalse(Thread.interrupted());
1548	>	} catch (Throwable fail) {
1549	>	threadUnexpectedException(fail);
1550		}
1551		return null;
1552		}
#	Line 662 | Line 1563 | public class JSR166TestCase extends Test
1563		public static final String TEST_STRING = "a test string";
1564
1565		public static class StringTask implements Callable<String> {
1566	<	public String call() { return TEST_STRING; }
1566	>	final String value;
1567	>	public StringTask() { this(TEST_STRING); }
1568	>	public StringTask(String value) { this.value = value; }
1569	>	public String call() { return value; }
1570		}
1571
1572		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1573		return new CheckedCallable<String>() {
1574	<	public String realCall() {
1574	>	protected String realCall() {
1575		try {
1576		latch.await();
1577		} catch (InterruptedException quittingTime) {}
#	Line 675 | Line 1579 | public class JSR166TestCase extends Test
1579		}};
1580		}
1581
1582	<	public static class NPETask implements Callable<String> {
1583	<	public String call() { throw new NullPointerException(); }
1584	<	}
1585	<
1586	<	public static class CallableOne implements Callable<Integer> {
683	<	public Integer call() { return one; }
1582	>	public Runnable countDowner(final CountDownLatch latch) {
1583	>	return new CheckedRunnable() {
1584	>	public void realRun() throws InterruptedException {
1585	>	latch.countDown();
1586	>	}};
1587		}
1588
1589	<	public class ShortRunnable extends CheckedRunnable {
1590	<	protected void realRun() throws Throwable {
1591	<	Thread.sleep(SHORT_DELAY_MS);
1589	>	class LatchAwaiter extends CheckedRunnable {
1590	>	static final int NEW = 0;
1591	>	static final int RUNNING = 1;
1592	>	static final int DONE = 2;
1593	>	final CountDownLatch latch;
1594	>	int state = NEW;
1595	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1596	>	public void realRun() throws InterruptedException {
1597	>	state = 1;
1598	>	await(latch);
1599	>	state = 2;
1600		}
1601		}
1602
1603	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1604	<	protected void realRun() throws InterruptedException {
694	<	Thread.sleep(SHORT_DELAY_MS);
695	<	}
1603	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1604	>	return new LatchAwaiter(latch);
1605		}
1606
1607	<	public class SmallRunnable extends CheckedRunnable {
1608	<	protected void realRun() throws Throwable {
1609	<	Thread.sleep(SMALL_DELAY_MS);
1607	>	public void await(CountDownLatch latch, long timeoutMillis) {
1608	>	try {
1609	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1610	>	fail("timed out waiting for CountDownLatch for "
1611	>	+ (timeoutMillis/1000) + " sec");
1612	>	} catch (Throwable fail) {
1613	>	threadUnexpectedException(fail);
1614		}
1615		}
1616
1617	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1618	<	protected void realRun() {
706	<	try {
707	<	Thread.sleep(SMALL_DELAY_MS);
708	<	} catch (InterruptedException ok) {}
709	<	}
1617	>	public void await(CountDownLatch latch) {
1618	>	await(latch, LONG_DELAY_MS);
1619		}
1620
1621	<	public class SmallCallable extends CheckedCallable {
1622	<	protected Object realCall() throws InterruptedException {
1623	<	Thread.sleep(SMALL_DELAY_MS);
1624	<	return Boolean.TRUE;
1621	>	public void await(Semaphore semaphore) {
1622	>	try {
1623	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1624	>	fail("timed out waiting for Semaphore for "
1625	>	+ (LONG_DELAY_MS/1000) + " sec");
1626	>	} catch (Throwable fail) {
1627	>	threadUnexpectedException(fail);
1628		}
1629		}
1630
1631	<	public class MediumRunnable extends CheckedRunnable {
1632	<	protected void realRun() throws Throwable {
1633	<	Thread.sleep(MEDIUM_DELAY_MS);
1631	>	public void await(CyclicBarrier barrier) {
1632	>	try {
1633	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1634	>	} catch (Throwable fail) {
1635	>	threadUnexpectedException(fail);
1636		}
1637		}
1638
1639	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1640	<	protected void realRun() throws InterruptedException {
1641	<	Thread.sleep(MEDIUM_DELAY_MS);
1642	<	}
1639	>	//     /**
1640	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1641	>	//      */
1642	>	//     public void await(AtomicBoolean flag) {
1643	>	//         await(flag, LONG_DELAY_MS);
1644	>	//     }
1645	>
1646	>	//     /**
1647	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1648	>	//      */
1649	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1650	>	//         long startTime = System.nanoTime();
1651	>	//         while (!flag.get()) {
1652	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1653	>	//                 throw new AssertionFailedError("timed out");
1654	>	//             Thread.yield();
1655	>	//         }
1656	>	//     }
1657	>
1658	>	public static class NPETask implements Callable<String> {
1659	>	public String call() { throw new NullPointerException(); }
1660		}
1661
1662	<	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1662	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1663		protected void realRun() {
1664		try {
1665	<	Thread.sleep(MEDIUM_DELAY_MS);
1665	>	delay(SMALL_DELAY_MS);
1666		} catch (InterruptedException ok) {}
1667		}
1668		}
1669
1670	<	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1671	<	protected void realRun() {
1672	<	try {
1673	<	Thread.sleep(LONG_DELAY_MS);
1674	<	} catch (InterruptedException ok) {}
1675	<	}
1670	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1671	>	return new CheckedRunnable() {
1672	>	protected void realRun() {
1673	>	try {
1674	>	delay(timeoutMillis);
1675	>	} catch (InterruptedException ok) {}
1676	>	}};
1677		}
1678
1679		/**
#	Line 753 | Line 1685 | public class JSR166TestCase extends Test
1685		}
1686		}
1687
1688	<	public static class TrackedShortRunnable implements Runnable {
1689	<	public volatile boolean done = false;
758	<	public void run() {
759	<	try {
760	<	Thread.sleep(SMALL_DELAY_MS);
761	<	done = true;
762	<	} catch (InterruptedException ok) {}
763	<	}
764	<	}
765	<
766	<	public static class TrackedMediumRunnable implements Runnable {
767	<	public volatile boolean done = false;
768	<	public void run() {
769	<	try {
770	<	Thread.sleep(MEDIUM_DELAY_MS);
771	<	done = true;
772	<	} catch (InterruptedException ok) {}
773	<	}
774	<	}
775	<
776	<	public static class TrackedLongRunnable implements Runnable {
777	<	public volatile boolean done = false;
778	<	public void run() {
779	<	try {
780	<	Thread.sleep(LONG_DELAY_MS);
781	<	done = true;
782	<	} catch (InterruptedException ok) {}
783	<	}
1688	>	public interface TrackedRunnable extends Runnable {
1689	>	boolean isDone();
1690		}
1691
1692		public static class TrackedNoOpRunnable implements Runnable {
#	Line 790 | Line 1696 | public class JSR166TestCase extends Test
1696		}
1697		}
1698
793	–	public static class TrackedCallable implements Callable {
794	–	public volatile boolean done = false;
795	–	public Object call() {
796	–	try {
797	–	Thread.sleep(SMALL_DELAY_MS);
798	–	done = true;
799	–	} catch (InterruptedException ok) {}
800	–	return Boolean.TRUE;
801	–	}
802	–	}
803	–
1699		/**
1700		* Analog of CheckedRunnable for RecursiveAction
1701		*/
1702		public abstract class CheckedRecursiveAction extends RecursiveAction {
1703		protected abstract void realCompute() throws Throwable;
1704
1705	<	public final void compute() {
1705	>	@Override protected final void compute() {
1706		try {
1707		realCompute();
1708	<	} catch (Throwable t) {
1709	<	threadUnexpectedException(t);
1708	>	} catch (Throwable fail) {
1709	>	threadUnexpectedException(fail);
1710		}
1711		}
1712		}
#	Line 822 | Line 1717 | public class JSR166TestCase extends Test
1717		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1718		protected abstract T realCompute() throws Throwable;
1719
1720	<	public final T compute() {
1720	>	@Override protected final T compute() {
1721		try {
1722		return realCompute();
1723	<	} catch (Throwable t) {
1724	<	threadUnexpectedException(t);
1723	>	} catch (Throwable fail) {
1724	>	threadUnexpectedException(fail);
1725		return null;
1726		}
1727		}
#	Line 840 | Line 1735 | public class JSR166TestCase extends Test
1735		ThreadPoolExecutor executor) {}
1736		}
1737
1738	+	/**
1739	+	* A CyclicBarrier that uses timed await and fails with
1740	+	* AssertionFailedErrors instead of throwing checked exceptions.
1741	+	*/
1742	+	public static class CheckedBarrier extends CyclicBarrier {
1743	+	public CheckedBarrier(int parties) { super(parties); }
1744	+
1745	+	public int await() {
1746	+	try {
1747	+	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1748	+	} catch (TimeoutException timedOut) {
1749	+	throw new AssertionFailedError("timed out");
1750	+	} catch (Exception fail) {
1751	+	AssertionFailedError afe =
1752	+	new AssertionFailedError("Unexpected exception: " + fail);
1753	+	afe.initCause(fail);
1754	+	throw afe;
1755	+	}
1756	+	}
1757	+	}
1758	+
1759	+	void checkEmpty(BlockingQueue q) {
1760	+	try {
1761	+	assertTrue(q.isEmpty());
1762	+	assertEquals(0, q.size());
1763	+	assertNull(q.peek());
1764	+	assertNull(q.poll());
1765	+	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1766	+	assertEquals(q.toString(), "[]");
1767	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1768	+	assertFalse(q.iterator().hasNext());
1769	+	try {
1770	+	q.element();
1771	+	shouldThrow();
1772	+	} catch (NoSuchElementException success) {}
1773	+	try {
1774	+	q.iterator().next();
1775	+	shouldThrow();
1776	+	} catch (NoSuchElementException success) {}
1777	+	try {
1778	+	q.remove();
1779	+	shouldThrow();
1780	+	} catch (NoSuchElementException success) {}
1781	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1782	+	}
1783	+
1784	+	void assertSerialEquals(Object x, Object y) {
1785	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1786	+	}
1787	+
1788	+	void assertNotSerialEquals(Object x, Object y) {
1789	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1790	+	}
1791	+
1792	+	byte[] serialBytes(Object o) {
1793	+	try {
1794	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1795	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1796	+	oos.writeObject(o);
1797	+	oos.flush();
1798	+	oos.close();
1799	+	return bos.toByteArray();
1800	+	} catch (Throwable fail) {
1801	+	threadUnexpectedException(fail);
1802	+	return new byte[0];
1803	+	}
1804	+	}
1805	+
1806	+	void assertImmutable(final Object o) {
1807	+	if (o instanceof Collection) {
1808	+	assertThrows(
1809	+	UnsupportedOperationException.class,
1810	+	new Runnable() { public void run() {
1811	+	((Collection) o).add(null);}});
1812	+	}
1813	+	}
1814	+
1815	+	@SuppressWarnings("unchecked")
1816	+	<T> T serialClone(T o) {
1817	+	try {
1818	+	ObjectInputStream ois = new ObjectInputStream
1819	+	(new ByteArrayInputStream(serialBytes(o)));
1820	+	T clone = (T) ois.readObject();
1821	+	if (o == clone) assertImmutable(o);
1822	+	assertSame(o.getClass(), clone.getClass());
1823	+	return clone;
1824	+	} catch (Throwable fail) {
1825	+	threadUnexpectedException(fail);
1826	+	return null;
1827	+	}
1828	+	}
1829	+
1830	+	/**
1831	+	* A version of serialClone that leaves error handling (for
1832	+	* e.g. NotSerializableException) up to the caller.
1833	+	*/
1834	+	@SuppressWarnings("unchecked")
1835	+	<T> T serialClonePossiblyFailing(T o)
1836	+	throws ReflectiveOperationException, java.io.IOException {
1837	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1838	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1839	+	oos.writeObject(o);
1840	+	oos.flush();
1841	+	oos.close();
1842	+	ObjectInputStream ois = new ObjectInputStream
1843	+	(new ByteArrayInputStream(bos.toByteArray()));
1844	+	T clone = (T) ois.readObject();
1845	+	if (o == clone) assertImmutable(o);
1846	+	assertSame(o.getClass(), clone.getClass());
1847	+	return clone;
1848	+	}
1849	+
1850	+	/**
1851	+	* If o implements Cloneable and has a public clone method,
1852	+	* returns a clone of o, else null.
1853	+	*/
1854	+	@SuppressWarnings("unchecked")
1855	+	<T> T cloneableClone(T o) {
1856	+	if (!(o instanceof Cloneable)) return null;
1857	+	final T clone;
1858	+	try {
1859	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1860	+	} catch (NoSuchMethodException ok) {
1861	+	return null;
1862	+	} catch (ReflectiveOperationException unexpected) {
1863	+	throw new Error(unexpected);
1864	+	}
1865	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1866	+	assertSame(o.getClass(), clone.getClass());
1867	+	return clone;
1868	+	}
1869	+
1870	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1871	+	Runnable... throwingActions) {
1872	+	for (Runnable throwingAction : throwingActions) {
1873	+	boolean threw = false;
1874	+	try { throwingAction.run(); }
1875	+	catch (Throwable t) {
1876	+	threw = true;
1877	+	if (!expectedExceptionClass.isInstance(t)) {
1878	+	AssertionFailedError afe =
1879	+	new AssertionFailedError
1880	+	("Expected " + expectedExceptionClass.getName() +
1881	+	", got " + t.getClass().getName());
1882	+	afe.initCause(t);
1883	+	threadUnexpectedException(afe);
1884	+	}
1885	+	}
1886	+	if (!threw)
1887	+	shouldThrow(expectedExceptionClass.getName());
1888	+	}
1889	+	}
1890	+
1891	+	public void assertIteratorExhausted(Iterator<?> it) {
1892	+	try {
1893	+	it.next();
1894	+	shouldThrow();
1895	+	} catch (NoSuchElementException success) {}
1896	+	assertFalse(it.hasNext());
1897	+	}
1898	+
1899	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1900	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1901	+	}
1902	+
1903	+	public Runnable runnableThrowing(final RuntimeException ex) {
1904	+	return new Runnable() { public void run() { throw ex; }};
1905	+	}
1906	+
1907	+	/** A reusable thread pool to be shared by tests. */
1908	+	static final ExecutorService cachedThreadPool =
1909	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1910	+	1000L, MILLISECONDS,
1911	+	new SynchronousQueue<Runnable>());
1912	+
1913	+	static <T> void shuffle(T[] array) {
1914	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1915	+	}
1916	+
1917	+	/**
1918	+	* Returns the same String as would be returned by {@link
1919	+	* Object#toString}, whether or not the given object's class
1920	+	* overrides toString().
1921	+	*
1922	+	* @see System#identityHashCode
1923	+	*/
1924	+	static String identityString(Object x) {
1925	+	return x.getClass().getName()
1926	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1927	+	}
1928	+
1929	+	// --- Shared assertions for Executor tests ---
1930	+
1931	+	/**
1932	+	* Returns maximum number of tasks that can be submitted to given
1933	+	* pool (with bounded queue) before saturation (when submission
1934	+	* throws RejectedExecutionException).
1935	+	*/
1936	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1937	+	BlockingQueue<Runnable> q = pool.getQueue();
1938	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1939	+	}
1940	+
1941	+	@SuppressWarnings("FutureReturnValueIgnored")
1942	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1943	+	try {
1944	+	e.execute((Runnable) null);
1945	+	shouldThrow();
1946	+	} catch (NullPointerException success) {}
1947	+
1948	+	if (! (e instanceof ExecutorService)) return;
1949	+	ExecutorService es = (ExecutorService) e;
1950	+	try {
1951	+	es.submit((Runnable) null);
1952	+	shouldThrow();
1953	+	} catch (NullPointerException success) {}
1954	+	try {
1955	+	es.submit((Runnable) null, Boolean.TRUE);
1956	+	shouldThrow();
1957	+	} catch (NullPointerException success) {}
1958	+	try {
1959	+	es.submit((Callable) null);
1960	+	shouldThrow();
1961	+	} catch (NullPointerException success) {}
1962	+
1963	+	if (! (e instanceof ScheduledExecutorService)) return;
1964	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1965	+	try {
1966	+	ses.schedule((Runnable) null,
1967	+	randomTimeout(), randomTimeUnit());
1968	+	shouldThrow();
1969	+	} catch (NullPointerException success) {}
1970	+	try {
1971	+	ses.schedule((Callable) null,
1972	+	randomTimeout(), randomTimeUnit());
1973	+	shouldThrow();
1974	+	} catch (NullPointerException success) {}
1975	+	try {
1976	+	ses.scheduleAtFixedRate((Runnable) null,
1977	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1978	+	shouldThrow();
1979	+	} catch (NullPointerException success) {}
1980	+	try {
1981	+	ses.scheduleWithFixedDelay((Runnable) null,
1982	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1983	+	shouldThrow();
1984	+	} catch (NullPointerException success) {}
1985	+	}
1986	+
1987	+	void setRejectedExecutionHandler(
1988	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1989	+	p.setRejectedExecutionHandler(handler);
1990	+	assertSame(handler, p.getRejectedExecutionHandler());
1991	+	}
1992	+
1993	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1994	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1995	+	final long savedTaskCount = p.getTaskCount();
1996	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1997	+	final int savedQueueSize = p.getQueue().size();
1998	+	final boolean stock = (p.getClass().getClassLoader() == null);
1999	+
2000	+	Runnable r = () -> {};
2001	+	Callable<Boolean> c = () -> Boolean.TRUE;
2002	+
2003	+	class Recorder implements RejectedExecutionHandler {
2004	+	public volatile Runnable r = null;
2005	+	public volatile ThreadPoolExecutor p = null;
2006	+	public void reset() { r = null; p = null; }
2007	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2008	+	assertNull(this.r);
2009	+	assertNull(this.p);
2010	+	this.r = r;
2011	+	this.p = p;
2012	+	}
2013	+	}
2014	+
2015	+	// check custom handler is invoked exactly once per task
2016	+	Recorder recorder = new Recorder();
2017	+	setRejectedExecutionHandler(p, recorder);
2018	+	for (int i = 2; i--> 0; ) {
2019	+	recorder.reset();
2020	+	p.execute(r);
2021	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2022	+	assertSame(r, recorder.r);
2023	+	assertSame(p, recorder.p);
2024	+
2025	+	recorder.reset();
2026	+	assertFalse(p.submit(r).isDone());
2027	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2028	+	assertSame(p, recorder.p);
2029	+
2030	+	recorder.reset();
2031	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2032	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2033	+	assertSame(p, recorder.p);
2034	+
2035	+	recorder.reset();
2036	+	assertFalse(p.submit(c).isDone());
2037	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2038	+	assertSame(p, recorder.p);
2039	+
2040	+	if (p instanceof ScheduledExecutorService) {
2041	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2042	+	ScheduledFuture<?> future;
2043	+
2044	+	recorder.reset();
2045	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2046	+	assertFalse(future.isDone());
2047	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2048	+	assertSame(p, recorder.p);
2049	+
2050	+	recorder.reset();
2051	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2052	+	assertFalse(future.isDone());
2053	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2054	+	assertSame(p, recorder.p);
2055	+
2056	+	recorder.reset();
2057	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2058	+	assertFalse(future.isDone());
2059	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2060	+	assertSame(p, recorder.p);
2061	+
2062	+	recorder.reset();
2063	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2064	+	assertFalse(future.isDone());
2065	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2066	+	assertSame(p, recorder.p);
2067	+	}
2068	+	}
2069	+
2070	+	// Checking our custom handler above should be sufficient, but
2071	+	// we add some integration tests of standard handlers.
2072	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2073	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2074	+
2075	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2076	+	try {
2077	+	p.execute(setThread);
2078	+	shouldThrow();
2079	+	} catch (RejectedExecutionException success) {}
2080	+	assertNull(thread.get());
2081	+
2082	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2083	+	p.execute(setThread);
2084	+	assertNull(thread.get());
2085	+
2086	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2087	+	p.execute(setThread);
2088	+	if (p.isShutdown())
2089	+	assertNull(thread.get());
2090	+	else
2091	+	assertSame(Thread.currentThread(), thread.get());
2092	+
2093	+	setRejectedExecutionHandler(p, savedHandler);
2094	+
2095	+	// check that pool was not perturbed by handlers
2096	+	assertEquals(savedTaskCount, p.getTaskCount());
2097	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2098	+	assertEquals(savedQueueSize, p.getQueue().size());
2099	+	}
2100		}

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