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Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.61 by jsr166, Mon Oct 11 03:54:10 2010 UTC vs.
Revision 1.234 by jsr166, Mon Jul 17 22:27:31 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.
#	Line 110 | Line 205 | public class JSR166TestCase extends Test
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	+	* 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	<	if (profileTests)
328	<	runTestProfiled();
329	<	else
330	<	super.runTest();
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	<	long t0 = System.nanoTime();
338	<	try {
337	>	for (int i = 0; i < 2; i++) {
338	>	long startTime = System.nanoTime();
339		super.runTest();
340	<	} finally {
341	<	long elapsedMillis =
342	<	(System.nanoTime() - t0) / (1000L * 1000L);
343	<	if (elapsedMillis >= profileThreshold)
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	<
349	>
350		/**
351	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
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) {
145	<	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		}
149	–	System.exit(0);
402		}
403
404		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 162 | Line 414 | public class JSR166TestCase extends Test
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.
463		*/
464		public static Test suite() {
465	<	return newTestSuite(
465	>	// Java7+ test classes
466	>	TestSuite suite = newTestSuite(
467		ForkJoinPoolTest.suite(),
468		ForkJoinTaskTest.suite(),
469		RecursiveActionTest.suite(),
#	Line 180 | Line 477 | public class JSR166TestCase extends Test
477		AbstractQueuedLongSynchronizerTest.suite(),
478		ArrayBlockingQueueTest.suite(),
479		ArrayDequeTest.suite(),
480	+	ArrayListTest.suite(),
481		AtomicBooleanTest.suite(),
482		AtomicIntegerArrayTest.suite(),
483		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 202 | Line 500 | public class JSR166TestCase extends Test
500		CopyOnWriteArrayListTest.suite(),
501		CopyOnWriteArraySetTest.suite(),
502		CountDownLatchTest.suite(),
503	+	CountedCompleterTest.suite(),
504		CyclicBarrierTest.suite(),
505		DelayQueueTest.suite(),
506		EntryTest.suite(),
#	Line 230 | Line 529 | public class JSR166TestCase extends Test
529		TreeMapTest.suite(),
530		TreeSetTest.suite(),
531		TreeSubMapTest.suite(),
532	<	TreeSubSetTest.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	>	"LinkedBlockingDeque8Test",
548	>	"LinkedBlockingQueue8Test",
549	>	"LongAccumulatorTest",
550	>	"LongAdderTest",
551	>	"SplittableRandomTest",
552	>	"StampedLockTest",
553	>	"SubmissionPublisherTest",
554	>	"ThreadLocalRandom8Test",
555	>	"TimeUnit8Test",
556	>	};
557	>	addNamedTestClasses(suite, java8TestClassNames);
558	>	}
559	>
560	>	// Java9+ test classes
561	>	if (atLeastJava9()) {
562	>	String[] java9TestClassNames = {
563	>	"AtomicBoolean9Test",
564	>	"AtomicInteger9Test",
565	>	"AtomicIntegerArray9Test",
566	>	"AtomicLong9Test",
567	>	"AtomicLongArray9Test",
568	>	"AtomicReference9Test",
569	>	"AtomicReferenceArray9Test",
570	>	"ExecutorCompletionService9Test",
571	>	"ForkJoinPool9Test",
572	>	};
573	>	addNamedTestClasses(suite, java9TestClassNames);
574	>	}
575	>
576	>	return suite;
577	>	}
578	>
579	>	/** Returns list of junit-style test method names in given class. */
580	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
581	>	Method[] methods = testClass.getDeclaredMethods();
582	>	ArrayList<String> names = new ArrayList<>(methods.length);
583	>	for (Method method : methods) {
584	>	if (method.getName().startsWith("test")
585	>	&& Modifier.isPublic(method.getModifiers())
586	>	// method.getParameterCount() requires jdk8+
587	>	&& method.getParameterTypes().length == 0) {
588	>	names.add(method.getName());
589	>	}
590	>	}
591	>	return names;
592	>	}
593	>
594	>	/**
595	>	* Returns junit-style testSuite for the given test class, but
596	>	* parameterized by passing extra data to each test.
597	>	*/
598	>	public static <ExtraData> Test parameterizedTestSuite
599	>	(Class<? extends JSR166TestCase> testClass,
600	>	Class<ExtraData> dataClass,
601	>	ExtraData data) {
602	>	try {
603	>	TestSuite suite = new TestSuite();
604	>	Constructor c =
605	>	testClass.getDeclaredConstructor(dataClass, String.class);
606	>	for (String methodName : testMethodNames(testClass))
607	>	suite.addTest((Test) c.newInstance(data, methodName));
608	>	return suite;
609	>	} catch (Exception e) {
610	>	throw new Error(e);
611	>	}
612		}
613
614	+	/**
615	+	* Returns junit-style testSuite for the jdk8 extension of the
616	+	* given test class, but parameterized by passing extra data to
617	+	* each test.  Uses reflection to allow compilation in jdk7.
618	+	*/
619	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
620	+	(Class<? extends JSR166TestCase> testClass,
621	+	Class<ExtraData> dataClass,
622	+	ExtraData data) {
623	+	if (atLeastJava8()) {
624	+	String name = testClass.getName();
625	+	String name8 = name.replaceAll("Test$", "8Test");
626	+	if (name.equals(name8)) throw new Error(name);
627	+	try {
628	+	return (Test)
629	+	Class.forName(name8)
630	+	.getMethod("testSuite", new Class[] { dataClass })
631	+	.invoke(null, data);
632	+	} catch (Exception e) {
633	+	throw new Error(e);
634	+	}
635	+	} else {
636	+	return new TestSuite();
637	+	}
638	+	}
639	+
640	+	// Delays for timing-dependent tests, in milliseconds.
641
642		public static long SHORT_DELAY_MS;
643		public static long SMALL_DELAY_MS;
644		public static long MEDIUM_DELAY_MS;
645		public static long LONG_DELAY_MS;
646
647	+	private static final long RANDOM_TIMEOUT;
648	+	private static final long RANDOM_EXPIRED_TIMEOUT;
649	+	private static final TimeUnit RANDOM_TIMEUNIT;
650	+	static {
651	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
652	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
653	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
654	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
655	+	TimeUnit[] timeUnits = TimeUnit.values();
656	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
657	+	}
658	+
659	+	/**
660	+	* Returns a timeout for use when any value at all will do.
661	+	*/
662	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
663
664		/**
665	<	* Returns the shortest timed delay. This could
666	<	* be reimplemented to use for example a Property.
665	>	* Returns a timeout that means "no waiting", i.e. not positive.
666	>	*/
667	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
668	>
669	>	/**
670	>	* Returns a random non-null TimeUnit.
671	>	*/
672	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
673	>
674	>	/**
675	>	* Returns the shortest timed delay. This can be scaled up for
676	>	* slow machines using the jsr166.delay.factor system property,
677	>	* or via jtreg's -timeoutFactor: flag.
678	>	* http://openjdk.java.net/jtreg/command-help.html
679		*/
680		protected long getShortDelay() {
681	<	return 50;
681	>	return (long) (50 * delayFactor);
682		}
683
251	–
684		/**
685		* Sets delays as multiples of SHORT_DELAY.
686		*/
#	Line 256 | Line 688 | public class JSR166TestCase extends Test
688		SHORT_DELAY_MS = getShortDelay();
689		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
690		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
691	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
691	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
692	>	}
693	>
694	>	private static final long TIMEOUT_DELAY_MS
695	>	= (long) (12.0 * Math.cbrt(delayFactor));
696	>
697	>	/**
698	>	* Returns a timeout in milliseconds to be used in tests that verify
699	>	* that operations block or time out.  We want this to be longer
700	>	* than the OS scheduling quantum, but not too long, so don't scale
701	>	* linearly with delayFactor; we use "crazy" cube root instead.
702	>	*/
703	>	static long timeoutMillis() {
704	>	return TIMEOUT_DELAY_MS;
705	>	}
706	>
707	>	/**
708	>	* Returns a new Date instance representing a time at least
709	>	* delayMillis milliseconds in the future.
710	>	*/
711	>	Date delayedDate(long delayMillis) {
712	>	// Add 1 because currentTimeMillis is known to round into the past.
713	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
714		}
715
716		/**
717		* The first exception encountered if any threadAssertXXX method fails.
718		*/
719		private final AtomicReference<Throwable> threadFailure
720	<	= new AtomicReference<Throwable>(null);
720	>	= new AtomicReference<>(null);
721
722		/**
723		* Records an exception so that it can be rethrown later in the test
#	Line 272 | Line 726 | public class JSR166TestCase extends Test
726		* the same test have no effect.
727		*/
728		public void threadRecordFailure(Throwable t) {
729	+	System.err.println(t);
730	+	dumpTestThreads();
731		threadFailure.compareAndSet(null, t);
732		}
733
#	Line 279 | Line 735 | public class JSR166TestCase extends Test
735		setDelays();
736		}
737
738	+	void tearDownFail(String format, Object... args) {
739	+	String msg = toString() + ": " + String.format(format, args);
740	+	System.err.println(msg);
741	+	dumpTestThreads();
742	+	throw new AssertionFailedError(msg);
743	+	}
744	+
745		/**
746	+	* Extra checks that get done for all test cases.
747	+	*
748		* Triggers test case failure if any thread assertions have failed,
749		* by rethrowing, in the test harness thread, any exception recorded
750		* earlier by threadRecordFailure.
751	+	*
752	+	* Triggers test case failure if interrupt status is set in the main thread.
753		*/
754		public void tearDown() throws Exception {
755	<	Throwable t = threadFailure.get();
755	>	Throwable t = threadFailure.getAndSet(null);
756		if (t != null) {
757		if (t instanceof Error)
758		throw (Error) t;
#	Line 300 | Line 767 | public class JSR166TestCase extends Test
767		throw afe;
768		}
769		}
770	+
771	+	if (Thread.interrupted())
772	+	tearDownFail("interrupt status set in main thread");
773	+
774	+	checkForkJoinPoolThreadLeaks();
775	+	}
776	+
777	+	/**
778	+	* Finds missing PoolCleaners
779	+	*/
780	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
781	+	Thread[] survivors = new Thread[7];
782	+	int count = Thread.enumerate(survivors);
783	+	for (int i = 0; i < count; i++) {
784	+	Thread thread = survivors[i];
785	+	String name = thread.getName();
786	+	if (name.startsWith("ForkJoinPool-")) {
787	+	// give thread some time to terminate
788	+	thread.join(LONG_DELAY_MS);
789	+	if (thread.isAlive())
790	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
791	+	thread);
792	+	}
793	+	}
794	+
795	+	if (!ForkJoinPool.commonPool()
796	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
797	+	tearDownFail("ForkJoin common pool thread stuck");
798		}
799
800		/**
#	Line 312 | Line 807 | public class JSR166TestCase extends Test
807		fail(reason);
808		} catch (AssertionFailedError t) {
809		threadRecordFailure(t);
810	<	fail(reason);
810	>	throw t;
811		}
812		}
813
#	Line 380 | Line 875 | public class JSR166TestCase extends Test
875		public void threadAssertEquals(Object x, Object y) {
876		try {
877		assertEquals(x, y);
878	<	} catch (AssertionFailedError t) {
879	<	threadRecordFailure(t);
880	<	throw t;
881	<	} catch (Throwable t) {
882	<	threadUnexpectedException(t);
878	>	} catch (AssertionFailedError fail) {
879	>	threadRecordFailure(fail);
880	>	throw fail;
881	>	} catch (Throwable fail) {
882	>	threadUnexpectedException(fail);
883		}
884		}
885
#	Line 396 | Line 891 | public class JSR166TestCase extends Test
891		public void threadAssertSame(Object x, Object y) {
892		try {
893		assertSame(x, y);
894	<	} catch (AssertionFailedError t) {
895	<	threadRecordFailure(t);
896	<	throw t;
894	>	} catch (AssertionFailedError fail) {
895	>	threadRecordFailure(fail);
896	>	throw fail;
897		}
898		}
899
#	Line 431 | Line 926 | public class JSR166TestCase extends Test
926		else {
927		AssertionFailedError afe =
928		new AssertionFailedError("unexpected exception: " + t);
929	<	t.initCause(t);
929	>	afe.initCause(t);
930		throw afe;
931		}
932		}
933
934		/**
935	+	* Delays, via Thread.sleep, for the given millisecond delay, but
936	+	* if the sleep is shorter than specified, may re-sleep or yield
937	+	* until time elapses.  Ensures that the given time, as measured
938	+	* by System.nanoTime(), has elapsed.
939	+	*/
940	+	static void delay(long millis) throws InterruptedException {
941	+	long nanos = millis * (1000 * 1000);
942	+	final long wakeupTime = System.nanoTime() + nanos;
943	+	do {
944	+	if (millis > 0L)
945	+	Thread.sleep(millis);
946	+	else // too short to sleep
947	+	Thread.yield();
948	+	nanos = wakeupTime - System.nanoTime();
949	+	millis = nanos / (1000 * 1000);
950	+	} while (nanos >= 0L);
951	+	}
952	+
953	+	/**
954	+	* Allows use of try-with-resources with per-test thread pools.
955	+	*/
956	+	class PoolCleaner implements AutoCloseable {
957	+	private final ExecutorService pool;
958	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
959	+	public void close() { joinPool(pool); }
960	+	}
961	+
962	+	/**
963	+	* An extension of PoolCleaner that has an action to release the pool.
964	+	*/
965	+	class PoolCleanerWithReleaser extends PoolCleaner {
966	+	private final Runnable releaser;
967	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
968	+	super(pool);
969	+	this.releaser = releaser;
970	+	}
971	+	public void close() {
972	+	try {
973	+	releaser.run();
974	+	} finally {
975	+	super.close();
976	+	}
977	+	}
978	+	}
979	+
980	+	PoolCleaner cleaner(ExecutorService pool) {
981	+	return new PoolCleaner(pool);
982	+	}
983	+
984	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
985	+	return new PoolCleanerWithReleaser(pool, releaser);
986	+	}
987	+
988	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
989	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
990	+	}
991	+
992	+	Runnable releaser(final CountDownLatch latch) {
993	+	return new Runnable() { public void run() {
994	+	do { latch.countDown(); }
995	+	while (latch.getCount() > 0);
996	+	}};
997	+	}
998	+
999	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
1000	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
1001	+	}
1002	+
1003	+	Runnable releaser(final AtomicBoolean flag) {
1004	+	return new Runnable() { public void run() { flag.set(true); }};
1005	+	}
1006	+
1007	+	/**
1008		* Waits out termination of a thread pool or fails doing so.
1009		*/
1010	<	public void joinPool(ExecutorService exec) {
1010	>	void joinPool(ExecutorService pool) {
1011		try {
1012	<	exec.shutdown();
1013	<	assertTrue("ExecutorService did not terminate in a timely manner",
1014	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
1012	>	pool.shutdown();
1013	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1014	>	try {
1015	>	threadFail("ExecutorService " + pool +
1016	>	" did not terminate in a timely manner");
1017	>	} finally {
1018	>	// last resort, for the benefit of subsequent tests
1019	>	pool.shutdownNow();
1020	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1021	>	}
1022	>	}
1023		} catch (SecurityException ok) {
1024		// Allowed in case test doesn't have privs
1025	<	} catch (InterruptedException ie) {
1026	<	fail("Unexpected InterruptedException");
1025	>	} catch (InterruptedException fail) {
1026	>	threadFail("Unexpected InterruptedException");
1027	>	}
1028	>	}
1029	>
1030	>	/**
1031	>	* Like Runnable, but with the freedom to throw anything.
1032	>	* junit folks had the same idea:
1033	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1034	>	*/
1035	>	interface Action { public void run() throws Throwable; }
1036	>
1037	>	/**
1038	>	* Runs all the given actions in parallel, failing if any fail.
1039	>	* Useful for running multiple variants of tests that are
1040	>	* necessarily individually slow because they must block.
1041	>	*/
1042	>	void testInParallel(Action ... actions) {
1043	>	ExecutorService pool = Executors.newCachedThreadPool();
1044	>	try (PoolCleaner cleaner = cleaner(pool)) {
1045	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1046	>	for (final Action action : actions)
1047	>	futures.add(pool.submit(new CheckedRunnable() {
1048	>	public void realRun() throws Throwable { action.run();}}));
1049	>	for (Future<?> future : futures)
1050	>	try {
1051	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1052	>	} catch (ExecutionException ex) {
1053	>	threadUnexpectedException(ex.getCause());
1054	>	} catch (Exception ex) {
1055	>	threadUnexpectedException(ex);
1056	>	}
1057	>	}
1058	>	}
1059	>
1060	>	/**
1061	>	* A debugging tool to print stack traces of most threads, as jstack does.
1062	>	* Uninteresting threads are filtered out.
1063	>	*/
1064	>	static void dumpTestThreads() {
1065	>	SecurityManager sm = System.getSecurityManager();
1066	>	if (sm != null) {
1067	>	try {
1068	>	System.setSecurityManager(null);
1069	>	} catch (SecurityException giveUp) {
1070	>	return;
1071	>	}
1072	>	}
1073	>
1074	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1075	>	System.err.println("------ stacktrace dump start ------");
1076	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1077	>	final String name = info.getThreadName();
1078	>	String lockName;
1079	>	if ("Signal Dispatcher".equals(name))
1080	>	continue;
1081	>	if ("Reference Handler".equals(name)
1082	>	&& (lockName = info.getLockName()) != null
1083	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1084	>	continue;
1085	>	if ("Finalizer".equals(name)
1086	>	&& (lockName = info.getLockName()) != null
1087	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1088	>	continue;
1089	>	if ("checkForWedgedTest".equals(name))
1090	>	continue;
1091	>	System.err.print(info);
1092	>	}
1093	>	System.err.println("------ stacktrace dump end ------");
1094	>
1095	>	if (sm != null) System.setSecurityManager(sm);
1096	>	}
1097	>
1098	>	/**
1099	>	* Checks that thread eventually enters the expected blocked thread state.
1100	>	*/
1101	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1102	>	// always sleep at least 1 ms, with high probability avoiding
1103	>	// transitory states
1104	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1105	>	try { delay(1); }
1106	>	catch (InterruptedException fail) {
1107	>	fail("Unexpected InterruptedException");
1108	>	}
1109	>	Thread.State s = thread.getState();
1110	>	if (s == expected)
1111	>	return;
1112	>	else if (s == Thread.State.TERMINATED)
1113	>	fail("Unexpected thread termination");
1114	>	}
1115	>	fail("timed out waiting for thread to enter thread state " + expected);
1116	>	}
1117	>
1118	>	/**
1119	>	* Checks that thread does not terminate within the default
1120	>	* millisecond delay of {@code timeoutMillis()}.
1121	>	* TODO: REMOVEME
1122	>	*/
1123	>	void assertThreadStaysAlive(Thread thread) {
1124	>	assertThreadStaysAlive(thread, timeoutMillis());
1125	>	}
1126	>
1127	>	/**
1128	>	* Checks that thread does not terminate within the given millisecond delay.
1129	>	* TODO: REMOVEME
1130	>	*/
1131	>	void assertThreadStaysAlive(Thread thread, long millis) {
1132	>	try {
1133	>	// No need to optimize the failing case via Thread.join.
1134	>	delay(millis);
1135	>	assertTrue(thread.isAlive());
1136	>	} catch (InterruptedException fail) {
1137	>	threadFail("Unexpected InterruptedException");
1138	>	}
1139	>	}
1140	>
1141	>	/**
1142	>	* Checks that the threads do not terminate within the default
1143	>	* millisecond delay of {@code timeoutMillis()}.
1144	>	* TODO: REMOVEME
1145	>	*/
1146	>	void assertThreadsStayAlive(Thread... threads) {
1147	>	assertThreadsStayAlive(timeoutMillis(), threads);
1148	>	}
1149	>
1150	>	/**
1151	>	* Checks that the threads do not terminate within the given millisecond delay.
1152	>	* TODO: REMOVEME
1153	>	*/
1154	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1155	>	try {
1156	>	// No need to optimize the failing case via Thread.join.
1157	>	delay(millis);
1158	>	for (Thread thread : threads)
1159	>	assertTrue(thread.isAlive());
1160	>	} catch (InterruptedException fail) {
1161	>	threadFail("Unexpected InterruptedException");
1162		}
1163		}
1164
1165	+	/**
1166	+	* Checks that future.get times out, with the default timeout of
1167	+	* {@code timeoutMillis()}.
1168	+	*/
1169	+	void assertFutureTimesOut(Future future) {
1170	+	assertFutureTimesOut(future, timeoutMillis());
1171	+	}
1172	+
1173	+	/**
1174	+	* Checks that future.get times out, with the given millisecond timeout.
1175	+	*/
1176	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1177	+	long startTime = System.nanoTime();
1178	+	try {
1179	+	future.get(timeoutMillis, MILLISECONDS);
1180	+	shouldThrow();
1181	+	} catch (TimeoutException success) {
1182	+	} catch (Exception fail) {
1183	+	threadUnexpectedException(fail);
1184	+	} finally { future.cancel(true); }
1185	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1186	+	}
1187
1188		/**
1189		* Fails with message "should throw exception".
#	Line 467 | Line 1200 | public class JSR166TestCase extends Test
1200		}
1201
1202		/**
1203	+	* The maximum number of consecutive spurious wakeups we should
1204	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1205	+	*/
1206	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1207	+
1208	+	/**
1209		* The number of elements to place in collections, arrays, etc.
1210		*/
1211		public static final int SIZE = 20;
#	Line 491 | Line 1230 | public class JSR166TestCase extends Test
1230		public static final Integer m6  = new Integer(-6);
1231		public static final Integer m10 = new Integer(-10);
1232
494	–
1233		/**
1234		* Runs Runnable r with a security policy that permits precisely
1235		* the specified permissions.  If there is no current security
#	Line 503 | Line 1241 | public class JSR166TestCase extends Test
1241		SecurityManager sm = System.getSecurityManager();
1242		if (sm == null) {
1243		r.run();
1244	+	}
1245	+	runWithSecurityManagerWithPermissions(r, permissions);
1246	+	}
1247	+
1248	+	/**
1249	+	* Runs Runnable r with a security policy that permits precisely
1250	+	* the specified permissions.  If there is no current security
1251	+	* manager, a temporary one is set for the duration of the
1252	+	* Runnable.  We require that any security manager permit
1253	+	* getPolicy/setPolicy.
1254	+	*/
1255	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1256	+	Permission... permissions) {
1257	+	SecurityManager sm = System.getSecurityManager();
1258	+	if (sm == null) {
1259		Policy savedPolicy = Policy.getPolicy();
1260		try {
1261		Policy.setPolicy(permissivePolicy());
1262		System.setSecurityManager(new SecurityManager());
1263	<	runWithPermissions(r, permissions);
1263	>	runWithSecurityManagerWithPermissions(r, permissions);
1264		} finally {
1265		System.setSecurityManager(null);
1266		Policy.setPolicy(savedPolicy);
#	Line 555 | Line 1308 | public class JSR166TestCase extends Test
1308		return perms.implies(p);
1309		}
1310		public void refresh() {}
1311	+	public String toString() {
1312	+	List<Permission> ps = new ArrayList<>();
1313	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1314	+	ps.add(e.nextElement());
1315	+	return "AdjustablePolicy with permissions " + ps;
1316	+	}
1317		}
1318
1319		/**
#	Line 580 | Line 1339 | public class JSR166TestCase extends Test
1339		* Sleeps until the given time has elapsed.
1340		* Throws AssertionFailedError if interrupted.
1341		*/
1342	<	void sleep(long millis) {
1342	>	static void sleep(long millis) {
1343		try {
1344	<	Thread.sleep(millis);
1345	<	} catch (InterruptedException ie) {
1344	>	delay(millis);
1345	>	} catch (InterruptedException fail) {
1346		AssertionFailedError afe =
1347		new AssertionFailedError("Unexpected InterruptedException");
1348	<	afe.initCause(ie);
1348	>	afe.initCause(fail);
1349		throw afe;
1350		}
1351		}
1352
1353		/**
1354	<	* Sleeps until the timeout has elapsed, or interrupted.
1355	<	* Does <em>NOT</em> throw InterruptedException.
1354	>	* Spin-waits up to the specified number of milliseconds for the given
1355	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1356		*/
1357	<	void sleepTillInterrupted(long timeoutMillis) {
1357	>	void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1358	>	long startTime = 0L;
1359	>	for (;;) {
1360	>	Thread.State s = thread.getState();
1361	>	if (s == Thread.State.BLOCKED ||
1362	>	s == Thread.State.WAITING ||
1363	>	s == Thread.State.TIMED_WAITING)
1364	>	return;
1365	>	else if (s == Thread.State.TERMINATED)
1366	>	fail("Unexpected thread termination");
1367	>	else if (startTime == 0L)
1368	>	startTime = System.nanoTime();
1369	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1370	>	threadAssertTrue(thread.isAlive());
1371	>	fail("timed out waiting for thread to enter wait state");
1372	>	}
1373	>	Thread.yield();
1374	>	}
1375	>	}
1376	>
1377	>	/**
1378	>	* Spin-waits up to the specified number of milliseconds for the given
1379	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1380	>	* and additionally satisfy the given condition.
1381	>	*/
1382	>	void waitForThreadToEnterWaitState(
1383	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1384	>	long startTime = 0L;
1385	>	for (;;) {
1386	>	Thread.State s = thread.getState();
1387	>	if (s == Thread.State.BLOCKED ||
1388	>	s == Thread.State.WAITING ||
1389	>	s == Thread.State.TIMED_WAITING) {
1390	>	try {
1391	>	if (waitingForGodot.call())
1392	>	return;
1393	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1394	>	}
1395	>	else if (s == Thread.State.TERMINATED)
1396	>	fail("Unexpected thread termination");
1397	>	else if (startTime == 0L)
1398	>	startTime = System.nanoTime();
1399	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1400	>	threadAssertTrue(thread.isAlive());
1401	>	fail("timed out waiting for thread to enter wait state");
1402	>	}
1403	>	Thread.yield();
1404	>	}
1405	>	}
1406	>
1407	>	/**
1408	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1409	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1410	>	*/
1411	>	void waitForThreadToEnterWaitState(Thread thread) {
1412	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1413	>	}
1414	>
1415	>	/**
1416	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1417	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1418	>	* and additionally satisfy the given condition.
1419	>	*/
1420	>	void waitForThreadToEnterWaitState(
1421	>	Thread thread, Callable<Boolean> waitingForGodot) {
1422	>	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1423	>	}
1424	>
1425	>	/**
1426	>	* Returns the number of milliseconds since time given by
1427	>	* startNanoTime, which must have been previously returned from a
1428	>	* call to {@link System#nanoTime()}.
1429	>	*/
1430	>	static long millisElapsedSince(long startNanoTime) {
1431	>	return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1432	>	}
1433	>
1434	>	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1435	>	//         long startTime = System.nanoTime();
1436	>	//         try {
1437	>	//             r.run();
1438	>	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1439	>	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1440	>	//             throw new AssertionFailedError("did not return promptly");
1441	>	//     }
1442	>
1443	>	//     void assertTerminatesPromptly(Runnable r) {
1444	>	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1445	>	//     }
1446	>
1447	>	/**
1448	>	* Checks that timed f.get() returns the expected value, and does not
1449	>	* wait for the timeout to elapse before returning.
1450	>	*/
1451	>	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1452	>	long startTime = System.nanoTime();
1453		try {
1454	<	Thread.sleep(timeoutMillis);
1455	<	} catch (InterruptedException wakeup) {}
1454	>	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1455	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1456	>	if (millisElapsedSince(startTime) > timeoutMillis/2)
1457	>	throw new AssertionFailedError("timed get did not return promptly");
1458	>	}
1459	>
1460	>	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1461	>	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1462		}
1463
1464		/**
#	Line 619 | Line 1479 | public class JSR166TestCase extends Test
1479		void awaitTermination(Thread t, long timeoutMillis) {
1480		try {
1481		t.join(timeoutMillis);
1482	<	} catch (InterruptedException ie) {
1483	<	threadUnexpectedException(ie);
1482	>	} catch (InterruptedException fail) {
1483	>	threadUnexpectedException(fail);
1484		} finally {
1485	<	if (t.isAlive()) {
1485	>	if (t.getState() != Thread.State.TERMINATED) {
1486		t.interrupt();
1487	<	fail("Test timed out");
1487	>	threadFail("timed out waiting for thread to terminate");
1488		}
1489		}
1490		}
1491
1492	+	/**
1493	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1494	+	* terminate (using {@link Thread#join(long)}), else interrupts
1495	+	* the thread (in the hope that it may terminate later) and fails.
1496	+	*/
1497	+	void awaitTermination(Thread t) {
1498	+	awaitTermination(t, LONG_DELAY_MS);
1499	+	}
1500	+
1501		// Some convenient Runnable classes
1502
1503		public abstract class CheckedRunnable implements Runnable {
#	Line 637 | Line 1506 | public class JSR166TestCase extends Test
1506		public final void run() {
1507		try {
1508		realRun();
1509	<	} catch (Throwable t) {
1510	<	threadUnexpectedException(t);
1509	>	} catch (Throwable fail) {
1510	>	threadUnexpectedException(fail);
1511		}
1512		}
1513		}
#	Line 691 | Line 1560 | public class JSR166TestCase extends Test
1560		realRun();
1561		threadShouldThrow("InterruptedException");
1562		} catch (InterruptedException success) {
1563	<	} catch (Throwable t) {
1564	<	threadUnexpectedException(t);
1563	>	threadAssertFalse(Thread.interrupted());
1564	>	} catch (Throwable fail) {
1565	>	threadUnexpectedException(fail);
1566		}
1567		}
1568		}
#	Line 703 | Line 1573 | public class JSR166TestCase extends Test
1573		public final T call() {
1574		try {
1575		return realCall();
1576	<	} catch (Throwable t) {
1577	<	threadUnexpectedException(t);
1576	>	} catch (Throwable fail) {
1577	>	threadUnexpectedException(fail);
1578		return null;
1579		}
1580		}
#	Line 720 | Line 1590 | public class JSR166TestCase extends Test
1590		threadShouldThrow("InterruptedException");
1591		return result;
1592		} catch (InterruptedException success) {
1593	<	} catch (Throwable t) {
1594	<	threadUnexpectedException(t);
1593	>	threadAssertFalse(Thread.interrupted());
1594	>	} catch (Throwable fail) {
1595	>	threadUnexpectedException(fail);
1596		}
1597		return null;
1598		}
#	Line 738 | Line 1609 | public class JSR166TestCase extends Test
1609		public static final String TEST_STRING = "a test string";
1610
1611		public static class StringTask implements Callable<String> {
1612	<	public String call() { return TEST_STRING; }
1612	>	final String value;
1613	>	public StringTask() { this(TEST_STRING); }
1614	>	public StringTask(String value) { this.value = value; }
1615	>	public String call() { return value; }
1616		}
1617
1618		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
1619		return new CheckedCallable<String>() {
1620	<	public String realCall() {
1620	>	protected String realCall() {
1621		try {
1622		latch.await();
1623		} catch (InterruptedException quittingTime) {}
#	Line 751 | Line 1625 | public class JSR166TestCase extends Test
1625		}};
1626		}
1627
1628	<	public static class NPETask implements Callable<String> {
1629	<	public String call() { throw new NullPointerException(); }
1630	<	}
1631	<
1632	<	public static class CallableOne implements Callable<Integer> {
759	<	public Integer call() { return one; }
1628	>	public Runnable countDowner(final CountDownLatch latch) {
1629	>	return new CheckedRunnable() {
1630	>	public void realRun() throws InterruptedException {
1631	>	latch.countDown();
1632	>	}};
1633		}
1634
1635	<	public class ShortRunnable extends CheckedRunnable {
1636	<	protected void realRun() throws Throwable {
1637	<	Thread.sleep(SHORT_DELAY_MS);
1635	>	class LatchAwaiter extends CheckedRunnable {
1636	>	static final int NEW = 0;
1637	>	static final int RUNNING = 1;
1638	>	static final int DONE = 2;
1639	>	final CountDownLatch latch;
1640	>	int state = NEW;
1641	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1642	>	public void realRun() throws InterruptedException {
1643	>	state = 1;
1644	>	await(latch);
1645	>	state = 2;
1646		}
1647		}
1648
1649	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1650	<	protected void realRun() throws InterruptedException {
770	<	Thread.sleep(SHORT_DELAY_MS);
771	<	}
1649	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1650	>	return new LatchAwaiter(latch);
1651		}
1652
1653	<	public class SmallRunnable extends CheckedRunnable {
1654	<	protected void realRun() throws Throwable {
1655	<	Thread.sleep(SMALL_DELAY_MS);
1653	>	public void await(CountDownLatch latch, long timeoutMillis) {
1654	>	try {
1655	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1656	>	fail("timed out waiting for CountDownLatch for "
1657	>	+ (timeoutMillis/1000) + " sec");
1658	>	} catch (Throwable fail) {
1659	>	threadUnexpectedException(fail);
1660		}
1661		}
1662
1663	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1664	<	protected void realRun() {
782	<	try {
783	<	Thread.sleep(SMALL_DELAY_MS);
784	<	} catch (InterruptedException ok) {}
785	<	}
1663	>	public void await(CountDownLatch latch) {
1664	>	await(latch, LONG_DELAY_MS);
1665		}
1666
1667	<	public class SmallCallable extends CheckedCallable {
1668	<	protected Object realCall() throws InterruptedException {
1669	<	Thread.sleep(SMALL_DELAY_MS);
1670	<	return Boolean.TRUE;
1667	>	public void await(Semaphore semaphore) {
1668	>	try {
1669	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1670	>	fail("timed out waiting for Semaphore for "
1671	>	+ (LONG_DELAY_MS/1000) + " sec");
1672	>	} catch (Throwable fail) {
1673	>	threadUnexpectedException(fail);
1674		}
1675		}
1676
1677	<	public class MediumRunnable extends CheckedRunnable {
1678	<	protected void realRun() throws Throwable {
1679	<	Thread.sleep(MEDIUM_DELAY_MS);
1677	>	public void await(CyclicBarrier barrier) {
1678	>	try {
1679	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1680	>	} catch (Throwable fail) {
1681	>	threadUnexpectedException(fail);
1682		}
1683		}
1684
1685	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1686	<	protected void realRun() throws InterruptedException {
1687	<	Thread.sleep(MEDIUM_DELAY_MS);
1688	<	}
1685	>	//     /**
1686	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1687	>	//      */
1688	>	//     public void await(AtomicBoolean flag) {
1689	>	//         await(flag, LONG_DELAY_MS);
1690	>	//     }
1691	>
1692	>	//     /**
1693	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1694	>	//      */
1695	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1696	>	//         long startTime = System.nanoTime();
1697	>	//         while (!flag.get()) {
1698	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1699	>	//                 throw new AssertionFailedError("timed out");
1700	>	//             Thread.yield();
1701	>	//         }
1702	>	//     }
1703	>
1704	>	public static class NPETask implements Callable<String> {
1705	>	public String call() { throw new NullPointerException(); }
1706		}
1707
1708	<	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1708	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1709		protected void realRun() {
1710		try {
1711	<	Thread.sleep(MEDIUM_DELAY_MS);
1711	>	delay(SMALL_DELAY_MS);
1712		} catch (InterruptedException ok) {}
1713		}
1714		}
1715
1716	<	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1717	<	protected void realRun() {
1718	<	try {
1719	<	Thread.sleep(LONG_DELAY_MS);
1720	<	} catch (InterruptedException ok) {}
1721	<	}
1716	>	public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1717	>	return new CheckedRunnable() {
1718	>	protected void realRun() {
1719	>	try {
1720	>	delay(timeoutMillis);
1721	>	} catch (InterruptedException ok) {}
1722	>	}};
1723		}
1724
1725		/**
#	Line 833 | Line 1735 | public class JSR166TestCase extends Test
1735		boolean isDone();
1736		}
1737
836	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
837	–	return new TrackedRunnable() {
838	–	private volatile boolean done = false;
839	–	public boolean isDone() { return done; }
840	–	public void run() {
841	–	try {
842	–	Thread.sleep(timeoutMillis);
843	–	done = true;
844	–	} catch (InterruptedException ok) {}
845	–	}
846	–	};
847	–	}
848	–
849	–	public static class TrackedShortRunnable implements Runnable {
850	–	public volatile boolean done = false;
851	–	public void run() {
852	–	try {
853	–	Thread.sleep(SHORT_DELAY_MS);
854	–	done = true;
855	–	} catch (InterruptedException ok) {}
856	–	}
857	–	}
858	–
859	–	public static class TrackedSmallRunnable implements Runnable {
860	–	public volatile boolean done = false;
861	–	public void run() {
862	–	try {
863	–	Thread.sleep(SMALL_DELAY_MS);
864	–	done = true;
865	–	} catch (InterruptedException ok) {}
866	–	}
867	–	}
868	–
869	–	public static class TrackedMediumRunnable implements Runnable {
870	–	public volatile boolean done = false;
871	–	public void run() {
872	–	try {
873	–	Thread.sleep(MEDIUM_DELAY_MS);
874	–	done = true;
875	–	} catch (InterruptedException ok) {}
876	–	}
877	–	}
878	–
879	–	public static class TrackedLongRunnable implements Runnable {
880	–	public volatile boolean done = false;
881	–	public void run() {
882	–	try {
883	–	Thread.sleep(LONG_DELAY_MS);
884	–	done = true;
885	–	} catch (InterruptedException ok) {}
886	–	}
887	–	}
888	–
1738		public static class TrackedNoOpRunnable implements Runnable {
1739		public volatile boolean done = false;
1740		public void run() {
#	Line 893 | Line 1742 | public class JSR166TestCase extends Test
1742		}
1743		}
1744
896	–	public static class TrackedCallable implements Callable {
897	–	public volatile boolean done = false;
898	–	public Object call() {
899	–	try {
900	–	Thread.sleep(SMALL_DELAY_MS);
901	–	done = true;
902	–	} catch (InterruptedException ok) {}
903	–	return Boolean.TRUE;
904	–	}
905	–	}
906	–
1745		/**
1746		* Analog of CheckedRunnable for RecursiveAction
1747		*/
1748		public abstract class CheckedRecursiveAction extends RecursiveAction {
1749		protected abstract void realCompute() throws Throwable;
1750
1751	<	public final void compute() {
1751	>	@Override protected final void compute() {
1752		try {
1753		realCompute();
1754	<	} catch (Throwable t) {
1755	<	threadUnexpectedException(t);
1754	>	} catch (Throwable fail) {
1755	>	threadUnexpectedException(fail);
1756		}
1757		}
1758		}
#	Line 925 | Line 1763 | public class JSR166TestCase extends Test
1763		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1764		protected abstract T realCompute() throws Throwable;
1765
1766	<	public final T compute() {
1766	>	@Override protected final T compute() {
1767		try {
1768		return realCompute();
1769	<	} catch (Throwable t) {
1770	<	threadUnexpectedException(t);
1769	>	} catch (Throwable fail) {
1770	>	threadUnexpectedException(fail);
1771		return null;
1772		}
1773		}
#	Line 944 | Line 1782 | public class JSR166TestCase extends Test
1782		}
1783
1784		/**
1785	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1786	<	* of throwing checked exceptions.
1785	>	* A CyclicBarrier that uses timed await and fails with
1786	>	* AssertionFailedErrors instead of throwing checked exceptions.
1787		*/
1788	<	public class CheckedBarrier extends CyclicBarrier {
1788	>	public static class CheckedBarrier extends CyclicBarrier {
1789		public CheckedBarrier(int parties) { super(parties); }
1790
1791		public int await() {
1792		try {
1793	<	return super.await();
1794	<	} catch (Exception e) {
1793	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1794	>	} catch (TimeoutException timedOut) {
1795	>	throw new AssertionFailedError("timed out");
1796	>	} catch (Exception fail) {
1797		AssertionFailedError afe =
1798	<	new AssertionFailedError("Unexpected exception: " + e);
1799	<	afe.initCause(e);
1798	>	new AssertionFailedError("Unexpected exception: " + fail);
1799	>	afe.initCause(fail);
1800		throw afe;
1801		}
1802		}
1803		}
1804
1805	+	void checkEmpty(BlockingQueue q) {
1806	+	try {
1807	+	assertTrue(q.isEmpty());
1808	+	assertEquals(0, q.size());
1809	+	assertNull(q.peek());
1810	+	assertNull(q.poll());
1811	+	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1812	+	assertEquals(q.toString(), "[]");
1813	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1814	+	assertFalse(q.iterator().hasNext());
1815	+	try {
1816	+	q.element();
1817	+	shouldThrow();
1818	+	} catch (NoSuchElementException success) {}
1819	+	try {
1820	+	q.iterator().next();
1821	+	shouldThrow();
1822	+	} catch (NoSuchElementException success) {}
1823	+	try {
1824	+	q.remove();
1825	+	shouldThrow();
1826	+	} catch (NoSuchElementException success) {}
1827	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1828	+	}
1829	+
1830	+	void assertSerialEquals(Object x, Object y) {
1831	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1832	+	}
1833	+
1834	+	void assertNotSerialEquals(Object x, Object y) {
1835	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1836	+	}
1837	+
1838	+	byte[] serialBytes(Object o) {
1839	+	try {
1840	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1841	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1842	+	oos.writeObject(o);
1843	+	oos.flush();
1844	+	oos.close();
1845	+	return bos.toByteArray();
1846	+	} catch (Throwable fail) {
1847	+	threadUnexpectedException(fail);
1848	+	return new byte[0];
1849	+	}
1850	+	}
1851	+
1852	+	void assertImmutable(final Object o) {
1853	+	if (o instanceof Collection) {
1854	+	assertThrows(
1855	+	UnsupportedOperationException.class,
1856	+	new Runnable() { public void run() {
1857	+	((Collection) o).add(null);}});
1858	+	}
1859	+	}
1860	+
1861	+	@SuppressWarnings("unchecked")
1862	+	<T> T serialClone(T o) {
1863	+	try {
1864	+	ObjectInputStream ois = new ObjectInputStream
1865	+	(new ByteArrayInputStream(serialBytes(o)));
1866	+	T clone = (T) ois.readObject();
1867	+	if (o == clone) assertImmutable(o);
1868	+	assertSame(o.getClass(), clone.getClass());
1869	+	return clone;
1870	+	} catch (Throwable fail) {
1871	+	threadUnexpectedException(fail);
1872	+	return null;
1873	+	}
1874	+	}
1875	+
1876	+	/**
1877	+	* A version of serialClone that leaves error handling (for
1878	+	* e.g. NotSerializableException) up to the caller.
1879	+	*/
1880	+	@SuppressWarnings("unchecked")
1881	+	<T> T serialClonePossiblyFailing(T o)
1882	+	throws ReflectiveOperationException, java.io.IOException {
1883	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1884	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1885	+	oos.writeObject(o);
1886	+	oos.flush();
1887	+	oos.close();
1888	+	ObjectInputStream ois = new ObjectInputStream
1889	+	(new ByteArrayInputStream(bos.toByteArray()));
1890	+	T clone = (T) ois.readObject();
1891	+	if (o == clone) assertImmutable(o);
1892	+	assertSame(o.getClass(), clone.getClass());
1893	+	return clone;
1894	+	}
1895	+
1896	+	/**
1897	+	* If o implements Cloneable and has a public clone method,
1898	+	* returns a clone of o, else null.
1899	+	*/
1900	+	@SuppressWarnings("unchecked")
1901	+	<T> T cloneableClone(T o) {
1902	+	if (!(o instanceof Cloneable)) return null;
1903	+	final T clone;
1904	+	try {
1905	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1906	+	} catch (NoSuchMethodException ok) {
1907	+	return null;
1908	+	} catch (ReflectiveOperationException unexpected) {
1909	+	throw new Error(unexpected);
1910	+	}
1911	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1912	+	assertSame(o.getClass(), clone.getClass());
1913	+	return clone;
1914	+	}
1915	+
1916	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1917	+	Runnable... throwingActions) {
1918	+	for (Runnable throwingAction : throwingActions) {
1919	+	boolean threw = false;
1920	+	try { throwingAction.run(); }
1921	+	catch (Throwable t) {
1922	+	threw = true;
1923	+	if (!expectedExceptionClass.isInstance(t)) {
1924	+	AssertionFailedError afe =
1925	+	new AssertionFailedError
1926	+	("Expected " + expectedExceptionClass.getName() +
1927	+	", got " + t.getClass().getName());
1928	+	afe.initCause(t);
1929	+	threadUnexpectedException(afe);
1930	+	}
1931	+	}
1932	+	if (!threw)
1933	+	shouldThrow(expectedExceptionClass.getName());
1934	+	}
1935	+	}
1936	+
1937	+	public void assertIteratorExhausted(Iterator<?> it) {
1938	+	try {
1939	+	it.next();
1940	+	shouldThrow();
1941	+	} catch (NoSuchElementException success) {}
1942	+	assertFalse(it.hasNext());
1943	+	}
1944	+
1945	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1946	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1947	+	}
1948	+
1949	+	public Runnable runnableThrowing(final RuntimeException ex) {
1950	+	return new Runnable() { public void run() { throw ex; }};
1951	+	}
1952	+
1953	+	/** A reusable thread pool to be shared by tests. */
1954	+	static final ExecutorService cachedThreadPool =
1955	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1956	+	1000L, MILLISECONDS,
1957	+	new SynchronousQueue<Runnable>());
1958	+
1959	+	static <T> void shuffle(T[] array) {
1960	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1961	+	}
1962	+
1963	+	// --- Shared assertions for Executor tests ---
1964	+
1965	+	/**
1966	+	* Returns maximum number of tasks that can be submitted to given
1967	+	* pool (with bounded queue) before saturation (when submission
1968	+	* throws RejectedExecutionException).
1969	+	*/
1970	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1971	+	BlockingQueue<Runnable> q = pool.getQueue();
1972	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1973	+	}
1974	+
1975	+	@SuppressWarnings("FutureReturnValueIgnored")
1976	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1977	+	try {
1978	+	e.execute((Runnable) null);
1979	+	shouldThrow();
1980	+	} catch (NullPointerException success) {}
1981	+
1982	+	if (! (e instanceof ExecutorService)) return;
1983	+	ExecutorService es = (ExecutorService) e;
1984	+	try {
1985	+	es.submit((Runnable) null);
1986	+	shouldThrow();
1987	+	} catch (NullPointerException success) {}
1988	+	try {
1989	+	es.submit((Runnable) null, Boolean.TRUE);
1990	+	shouldThrow();
1991	+	} catch (NullPointerException success) {}
1992	+	try {
1993	+	es.submit((Callable) null);
1994	+	shouldThrow();
1995	+	} catch (NullPointerException success) {}
1996	+
1997	+	if (! (e instanceof ScheduledExecutorService)) return;
1998	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1999	+	try {
2000	+	ses.schedule((Runnable) null,
2001	+	randomTimeout(), randomTimeUnit());
2002	+	shouldThrow();
2003	+	} catch (NullPointerException success) {}
2004	+	try {
2005	+	ses.schedule((Callable) null,
2006	+	randomTimeout(), randomTimeUnit());
2007	+	shouldThrow();
2008	+	} catch (NullPointerException success) {}
2009	+	try {
2010	+	ses.scheduleAtFixedRate((Runnable) null,
2011	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2012	+	shouldThrow();
2013	+	} catch (NullPointerException success) {}
2014	+	try {
2015	+	ses.scheduleWithFixedDelay((Runnable) null,
2016	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2017	+	shouldThrow();
2018	+	} catch (NullPointerException success) {}
2019	+	}
2020	+
2021	+	void setRejectedExecutionHandler(
2022	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
2023	+	p.setRejectedExecutionHandler(handler);
2024	+	assertSame(handler, p.getRejectedExecutionHandler());
2025	+	}
2026	+
2027	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
2028	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
2029	+	final long savedTaskCount = p.getTaskCount();
2030	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
2031	+	final int savedQueueSize = p.getQueue().size();
2032	+	final boolean stock = (p.getClass().getClassLoader() == null);
2033	+
2034	+	Runnable r = () -> {};
2035	+	Callable<Boolean> c = () -> Boolean.TRUE;
2036	+
2037	+	class Recorder implements RejectedExecutionHandler {
2038	+	public volatile Runnable r = null;
2039	+	public volatile ThreadPoolExecutor p = null;
2040	+	public void reset() { r = null; p = null; }
2041	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
2042	+	assertNull(this.r);
2043	+	assertNull(this.p);
2044	+	this.r = r;
2045	+	this.p = p;
2046	+	}
2047	+	}
2048	+
2049	+	// check custom handler is invoked exactly once per task
2050	+	Recorder recorder = new Recorder();
2051	+	setRejectedExecutionHandler(p, recorder);
2052	+	for (int i = 2; i--> 0; ) {
2053	+	recorder.reset();
2054	+	p.execute(r);
2055	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
2056	+	assertSame(r, recorder.r);
2057	+	assertSame(p, recorder.p);
2058	+
2059	+	recorder.reset();
2060	+	assertFalse(p.submit(r).isDone());
2061	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2062	+	assertSame(p, recorder.p);
2063	+
2064	+	recorder.reset();
2065	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
2066	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2067	+	assertSame(p, recorder.p);
2068	+
2069	+	recorder.reset();
2070	+	assertFalse(p.submit(c).isDone());
2071	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2072	+	assertSame(p, recorder.p);
2073	+
2074	+	if (p instanceof ScheduledExecutorService) {
2075	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2076	+	ScheduledFuture<?> future;
2077	+
2078	+	recorder.reset();
2079	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2080	+	assertFalse(future.isDone());
2081	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2082	+	assertSame(p, recorder.p);
2083	+
2084	+	recorder.reset();
2085	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2086	+	assertFalse(future.isDone());
2087	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2088	+	assertSame(p, recorder.p);
2089	+
2090	+	recorder.reset();
2091	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2092	+	assertFalse(future.isDone());
2093	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2094	+	assertSame(p, recorder.p);
2095	+
2096	+	recorder.reset();
2097	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2098	+	assertFalse(future.isDone());
2099	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2100	+	assertSame(p, recorder.p);
2101	+	}
2102	+	}
2103	+
2104	+	// Checking our custom handler above should be sufficient, but
2105	+	// we add some integration tests of standard handlers.
2106	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2107	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2108	+
2109	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2110	+	try {
2111	+	p.execute(setThread);
2112	+	shouldThrow();
2113	+	} catch (RejectedExecutionException success) {}
2114	+	assertNull(thread.get());
2115	+
2116	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2117	+	p.execute(setThread);
2118	+	assertNull(thread.get());
2119	+
2120	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2121	+	p.execute(setThread);
2122	+	if (p.isShutdown())
2123	+	assertNull(thread.get());
2124	+	else
2125	+	assertSame(Thread.currentThread(), thread.get());
2126	+
2127	+	setRejectedExecutionHandler(p, savedHandler);
2128	+
2129	+	// check that pool was not perturbed by handlers
2130	+	assertEquals(savedTaskCount, p.getTaskCount());
2131	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2132	+	assertEquals(savedQueueSize, p.getQueue().size());
2133	+	}
2134		}

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