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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.119 by jsr166, Mon Jun 16 20:13:54 2014 UTC vs.
Revision 1.243 by jsr166, Thu Apr 5 03:36:54 2018 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
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.*;
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;
60	+	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.Deque;
70		import java.util.Enumeration;
71	+	import java.util.HashSet;
72	+	import java.util.Iterator;
73		import java.util.List;
74		import java.util.NoSuchElementException;
75		import java.util.PropertyPermission;
76	<	import java.util.concurrent.*;
76	>	import java.util.Set;
77	>	import java.util.concurrent.BlockingQueue;
78	>	import java.util.concurrent.Callable;
79	>	import java.util.concurrent.CountDownLatch;
80	>	import java.util.concurrent.CyclicBarrier;
81	>	import java.util.concurrent.ExecutionException;
82	>	import java.util.concurrent.Executor;
83	>	import java.util.concurrent.Executors;
84	>	import java.util.concurrent.ExecutorService;
85	>	import java.util.concurrent.ForkJoinPool;
86	>	import java.util.concurrent.Future;
87	>	import java.util.concurrent.FutureTask;
88	>	import java.util.concurrent.RecursiveAction;
89	>	import java.util.concurrent.RecursiveTask;
90	>	import java.util.concurrent.RejectedExecutionException;
91	>	import java.util.concurrent.RejectedExecutionHandler;
92	>	import java.util.concurrent.Semaphore;
93	>	import java.util.concurrent.ScheduledExecutorService;
94	>	import java.util.concurrent.ScheduledFuture;
95	>	import java.util.concurrent.SynchronousQueue;
96	>	import java.util.concurrent.ThreadFactory;
97	>	import java.util.concurrent.ThreadLocalRandom;
98	>	import java.util.concurrent.ThreadPoolExecutor;
99	>	import java.util.concurrent.TimeUnit;
100	>	import java.util.concurrent.TimeoutException;
101		import java.util.concurrent.atomic.AtomicBoolean;
102		import java.util.concurrent.atomic.AtomicReference;
27	–	import static java.util.concurrent.TimeUnit.MILLISECONDS;
28	–	import static java.util.concurrent.TimeUnit.NANOSECONDS;
103		import java.util.regex.Pattern;
104	<	import java.security.CodeSource;
105	<	import java.security.Permission;
106	<	import java.security.PermissionCollection;
107	<	import java.security.Permissions;
108	<	import java.security.Policy;
35	<	import java.security.ProtectionDomain;
36	<	import java.security.SecurityPermission;
104	>
105	>	import junit.framework.Test;
106	>	import junit.framework.TestCase;
107	>	import junit.framework.TestResult;
108	>	import junit.framework.TestSuite;
109
110		/**
111		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 45 | Line 117 | import java.security.SecurityPermission;
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
120	>	* <li>All assertions in code running in generated threads must use
121		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
122		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
123		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
124		* particularly recommended) for other code to use these forms too.
125		* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.</li>
126	>	* this way, but enough to live with.
127		*
128	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
128	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
129		* to invoke {@code super.setUp} and {@code super.tearDown} within
130		* them. These methods are used to clear and check for thread
131	<	* assertion failures.</li>
131	>	* assertion failures.
132		*
133		* <li>All delays and timeouts must use one of the constants {@code
134		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 67 | Line 139 | import java.security.SecurityPermission;
139		* is always discriminable as larger than SHORT and smaller than
140		* MEDIUM.  And so on. These constants are set to conservative values,
141		* but even so, if there is ever any doubt, they can all be increased
142	<	* in one spot to rerun tests on slower platforms.</li>
142	>	* in one spot to rerun tests on slower platforms.
143		*
144	<	* <li> All threads generated must be joined inside each test case
144	>	* <li>All threads generated must be joined inside each test case
145		* method (or {@code fail} to do so) before returning from the
146		* method. The {@code joinPool} method can be used to do this when
147	<	* using Executors.</li>
147	>	* using Executors.
148		*
149		* </ol>
150		*
151		* <p><b>Other notes</b>
152		* <ul>
153		*
154	<	* <li> Usually, there is one testcase method per JSR166 method
154	>	* <li>Usually, there is one testcase method per JSR166 method
155		* covering "normal" operation, and then as many exception-testing
156		* methods as there are exceptions the method can throw. Sometimes
157		* there are multiple tests per JSR166 method when the different
158		* "normal" behaviors differ significantly. And sometimes testcases
159	<	* cover multiple methods when they cannot be tested in
88	<	* isolation.</li>
159	>	* cover multiple methods when they cannot be tested in isolation.
160		*
161	<	* <li> The documentation style for testcases is to provide as javadoc
161	>	* <li>The documentation style for testcases is to provide as javadoc
162		* a simple sentence or two describing the property that the testcase
163		* method purports to test. The javadocs do not say anything about how
164	<	* the property is tested. To find out, read the code.</li>
164	>	* the property is tested. To find out, read the code.
165		*
166	<	* <li> These tests are "conformance tests", and do not attempt to
166	>	* <li>These tests are "conformance tests", and do not attempt to
167		* test throughput, latency, scalability or other performance factors
168		* (see the separate "jtreg" tests for a set intended to check these
169		* for the most central aspects of functionality.) So, most tests use
170		* the smallest sensible numbers of threads, collection sizes, etc
171	<	* needed to check basic conformance.</li>
171	>	* needed to check basic conformance.
172		*
173		* <li>The test classes currently do not declare inclusion in
174		* any particular package to simplify things for people integrating
175	<	* them in TCK test suites.</li>
175	>	* them in TCK test suites.
176		*
177	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
178	<	* runs all JSR166 unit tests.</li>
177	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
178	>	* runs all JSR166 unit tests.
179		*
180		* </ul>
181		*/
#	Line 143 | Line 214 | public class JSR166TestCase extends Test
214		Integer.getInteger("jsr166.runsPerTest", 1);
215
216		/**
217	+	* The number of repetitions of the test suite (for finding leaks?).
218	+	*/
219	+	private static final int suiteRuns =
220	+	Integer.getInteger("jsr166.suiteRuns", 1);
221	+
222	+	/**
223	+	* Returns the value of the system property, or NaN if not defined.
224	+	*/
225	+	private static float systemPropertyValue(String name) {
226	+	String floatString = System.getProperty(name);
227	+	if (floatString == null)
228	+	return Float.NaN;
229	+	try {
230	+	return Float.parseFloat(floatString);
231	+	} catch (NumberFormatException ex) {
232	+	throw new IllegalArgumentException(
233	+	String.format("Bad float value in system property %s=%s",
234	+	name, floatString));
235	+	}
236	+	}
237	+
238	+	/**
239	+	* The scaling factor to apply to standard delays used in tests.
240	+	* May be initialized from any of:
241	+	* - the "jsr166.delay.factor" system property
242	+	* - the "test.timeout.factor" system property (as used by jtreg)
243	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
244	+	* - hard-coded fuzz factor when using a known slowpoke VM
245	+	*/
246	+	private static final float delayFactor = delayFactor();
247	+
248	+	private static float delayFactor() {
249	+	float x;
250	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
251	+	return x;
252	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
253	+	return x;
254	+	String prop = System.getProperty("java.vm.version");
255	+	if (prop != null && prop.matches(".*debug.*"))
256	+	return 4.0f; // How much slower is fastdebug than product?!
257	+	return 1.0f;
258	+	}
259	+
260	+	public JSR166TestCase() { super(); }
261	+	public JSR166TestCase(String name) { super(name); }
262	+
263	+	/**
264		* A filter for tests to run, matching strings of the form
265		* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
266		* Usefully combined with jsr166.runsPerTest.
#	Line 154 | Line 272 | public class JSR166TestCase extends Test
272		return (regex == null) ? null : Pattern.compile(regex);
273		}
274
275	<	protected void runTest() throws Throwable {
275	>	// Instrumentation to debug very rare, but very annoying hung test runs.
276	>	static volatile TestCase currentTestCase;
277	>	// static volatile int currentRun = 0;
278	>	static {
279	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
280	>	// Avoid spurious reports with enormous runsPerTest.
281	>	// A single test case run should never take more than 1 second.
282	>	// But let's cap it at the high end too ...
283	>	final int timeoutMinutes =
284	>	Math.min(15, Math.max(runsPerTest / 60, 1));
285	>	for (TestCase lastTestCase = currentTestCase;;) {
286	>	try { MINUTES.sleep(timeoutMinutes); }
287	>	catch (InterruptedException unexpected) { break; }
288	>	if (lastTestCase == currentTestCase) {
289	>	System.err.printf(
290	>	"Looks like we're stuck running test: %s%n",
291	>	lastTestCase);
292	>	//                     System.err.printf(
293	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
294	>	//                         lastTestCase, currentRun, runsPerTest);
295	>	//                     System.err.println("availableProcessors=" +
296	>	//                         Runtime.getRuntime().availableProcessors());
297	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
298	>	dumpTestThreads();
299	>	// one stack dump is probably enough; more would be spam
300	>	break;
301	>	}
302	>	lastTestCase = currentTestCase;
303	>	}}};
304	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
305	>	thread.setDaemon(true);
306	>	thread.start();
307	>	}
308	>
309	>	//     public static String cpuModel() {
310	>	//         try {
311	>	//             java.util.regex.Matcher matcher
312	>	//               = Pattern.compile("model name\\s*: (.*)")
313	>	//                 .matcher(new String(
314	>	//                     java.nio.file.Files.readAllBytes(
315	>	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
316	>	//             matcher.find();
317	>	//             return matcher.group(1);
318	>	//         } catch (Exception ex) { return null; }
319	>	//     }
320	>
321	>	public void runBare() throws Throwable {
322	>	currentTestCase = this;
323		if (methodFilter == null
324	<	|| methodFilter.matcher(toString()).find()) {
325	<	for (int i = 0; i < runsPerTest; i++) {
326	<	if (profileTests)
327	<	runTestProfiled();
328	<	else
329	<	super.runTest();
330	<	}
324	>	|| methodFilter.matcher(toString()).find())
325	>	super.runBare();
326	>	}
327	>
328	>	protected void runTest() throws Throwable {
329	>	for (int i = 0; i < runsPerTest; i++) {
330	>	// currentRun = i;
331	>	if (profileTests)
332	>	runTestProfiled();
333	>	else
334	>	super.runTest();
335		}
336		}
337
338		protected void runTestProfiled() throws Throwable {
339	<	// Warmup run, notably to trigger all needed classloading.
340	<	super.runTest();
172	<	long t0 = System.nanoTime();
173	<	try {
339	>	for (int i = 0; i < 2; i++) {
340	>	long startTime = System.nanoTime();
341		super.runTest();
342	<	} finally {
343	<	long elapsedMillis = millisElapsedSince(t0);
344	<	if (elapsedMillis >= profileThreshold)
342	>	long elapsedMillis = millisElapsedSince(startTime);
343	>	if (elapsedMillis < profileThreshold)
344	>	break;
345	>	// Never report first run of any test; treat it as a
346	>	// warmup run, notably to trigger all needed classloading,
347	>	if (i > 0)
348		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
349		}
350		}
351
352		/**
353		* Runs all JSR166 unit tests using junit.textui.TestRunner.
184	–	* Optional command line arg provides the number of iterations to
185	–	* repeat running the tests.
354		*/
355		public static void main(String[] args) {
356	+	main(suite(), args);
357	+	}
358	+
359	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
360	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
361	+	long runTime;
362	+	public void startTest(Test test) {}
363	+	protected void printHeader(long runTime) {
364	+	this.runTime = runTime; // defer printing for later
365	+	}
366	+	protected void printFooter(TestResult result) {
367	+	if (result.wasSuccessful()) {
368	+	getWriter().println("OK (" + result.runCount() + " tests)"
369	+	+ "  Time: " + elapsedTimeAsString(runTime));
370	+	} else {
371	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
372	+	super.printFooter(result);
373	+	}
374	+	}
375	+	}
376	+
377	+	/**
378	+	* Returns a TestRunner that doesn't bother with unnecessary
379	+	* fluff, like printing a "." for each test case.
380	+	*/
381	+	static junit.textui.TestRunner newPithyTestRunner() {
382	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
383	+	runner.setPrinter(new PithyResultPrinter(System.out));
384	+	return runner;
385	+	}
386	+
387	+	/**
388	+	* Runs all unit tests in the given test suite.
389	+	* Actual behavior influenced by jsr166.* system properties.
390	+	*/
391	+	static void main(Test suite, String[] args) {
392		if (useSecurityManager) {
393		System.err.println("Setting a permissive security manager");
394		Policy.setPolicy(permissivePolicy());
395		System.setSecurityManager(new SecurityManager());
396		}
397	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
398	<
399	<	Test s = suite();
400	<	for (int i = 0; i < iters; ++i) {
197	<	junit.textui.TestRunner.run(s);
397	>	for (int i = 0; i < suiteRuns; i++) {
398	>	TestResult result = newPithyTestRunner().doRun(suite);
399	>	if (!result.wasSuccessful())
400	>	System.exit(1);
401		System.gc();
402		System.runFinalization();
403		}
201	–	System.exit(0);
404		}
405
406		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 219 | Line 421 | public class JSR166TestCase extends Test
421		for (String testClassName : testClassNames) {
422		try {
423		Class<?> testClass = Class.forName(testClassName);
424	<	Method m = testClass.getDeclaredMethod("suite",
223	<	new Class<?>[0]);
424	>	Method m = testClass.getDeclaredMethod("suite");
425		suite.addTest(newTestSuite((Test)m.invoke(null)));
426	<	} catch (Exception e) {
427	<	throw new Error("Missing test class", e);
426	>	} catch (ReflectiveOperationException e) {
427	>	throw new AssertionError("Missing test class", e);
428		}
429		}
430		}
#	Line 245 | Line 446 | public class JSR166TestCase extends Test
446		}
447		}
448
449	<	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
450	<	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
451	<	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
452	<	public static boolean atLeastJava9() {
453	<	// As of 2014-05, java9 still uses 52.0 class file version
253	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
254	<	}
449	>	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
450	>	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
451	>	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
452	>	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
453	>	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
454
455		/**
456		* Collects all JSR166 unit tests as one suite.
#	Line 272 | Line 471 | public class JSR166TestCase extends Test
471		AbstractQueuedLongSynchronizerTest.suite(),
472		ArrayBlockingQueueTest.suite(),
473		ArrayDequeTest.suite(),
474	+	ArrayListTest.suite(),
475		AtomicBooleanTest.suite(),
476		AtomicIntegerArrayTest.suite(),
477		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 294 | Line 494 | public class JSR166TestCase extends Test
494		CopyOnWriteArrayListTest.suite(),
495		CopyOnWriteArraySetTest.suite(),
496		CountDownLatchTest.suite(),
497	+	CountedCompleterTest.suite(),
498		CyclicBarrierTest.suite(),
499		DelayQueueTest.suite(),
500		EntryTest.suite(),
#	Line 322 | Line 523 | public class JSR166TestCase extends Test
523		TreeMapTest.suite(),
524		TreeSetTest.suite(),
525		TreeSubMapTest.suite(),
526	<	TreeSubSetTest.suite());
526	>	TreeSubSetTest.suite(),
527	>	VectorTest.suite());
528
529		// Java8+ test classes
530		if (atLeastJava8()) {
531		String[] java8TestClassNames = {
532	+	"ArrayDeque8Test",
533		"Atomic8Test",
534		"CompletableFutureTest",
535		"ConcurrentHashMap8Test",
536	<	"CountedCompleterTest",
536	>	"CountedCompleter8Test",
537		"DoubleAccumulatorTest",
538		"DoubleAdderTest",
539		"ForkJoinPool8Test",
540		"ForkJoinTask8Test",
541	+	"HashMapTest",
542	+	"LinkedBlockingDeque8Test",
543	+	"LinkedBlockingQueue8Test",
544		"LongAccumulatorTest",
545		"LongAdderTest",
546		"SplittableRandomTest",
547		"StampedLockTest",
548	+	"SubmissionPublisherTest",
549		"ThreadLocalRandom8Test",
550	+	"TimeUnit8Test",
551		};
552		addNamedTestClasses(suite, java8TestClassNames);
553		}
#	Line 347 | Line 555 | public class JSR166TestCase extends Test
555		// Java9+ test classes
556		if (atLeastJava9()) {
557		String[] java9TestClassNames = {
558	<	"ThreadPoolExecutor9Test",
558	>	"AtomicBoolean9Test",
559	>	"AtomicInteger9Test",
560	>	"AtomicIntegerArray9Test",
561	>	"AtomicLong9Test",
562	>	"AtomicLongArray9Test",
563	>	"AtomicReference9Test",
564	>	"AtomicReferenceArray9Test",
565	>	"ExecutorCompletionService9Test",
566	>	"ForkJoinPool9Test",
567		};
568		addNamedTestClasses(suite, java9TestClassNames);
569		}
#	Line 355 | Line 571 | public class JSR166TestCase extends Test
571		return suite;
572		}
573
574	+	/** Returns list of junit-style test method names in given class. */
575	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
576	+	Method[] methods = testClass.getDeclaredMethods();
577	+	ArrayList<String> names = new ArrayList<>(methods.length);
578	+	for (Method method : methods) {
579	+	if (method.getName().startsWith("test")
580	+	&& Modifier.isPublic(method.getModifiers())
581	+	// method.getParameterCount() requires jdk8+
582	+	&& method.getParameterTypes().length == 0) {
583	+	names.add(method.getName());
584	+	}
585	+	}
586	+	return names;
587	+	}
588	+
589	+	/**
590	+	* Returns junit-style testSuite for the given test class, but
591	+	* parameterized by passing extra data to each test.
592	+	*/
593	+	public static <ExtraData> Test parameterizedTestSuite
594	+	(Class<? extends JSR166TestCase> testClass,
595	+	Class<ExtraData> dataClass,
596	+	ExtraData data) {
597	+	try {
598	+	TestSuite suite = new TestSuite();
599	+	Constructor c =
600	+	testClass.getDeclaredConstructor(dataClass, String.class);
601	+	for (String methodName : testMethodNames(testClass))
602	+	suite.addTest((Test) c.newInstance(data, methodName));
603	+	return suite;
604	+	} catch (ReflectiveOperationException e) {
605	+	throw new AssertionError(e);
606	+	}
607	+	}
608	+
609	+	/**
610	+	* Returns junit-style testSuite for the jdk8 extension of the
611	+	* given test class, but parameterized by passing extra data to
612	+	* each test.  Uses reflection to allow compilation in jdk7.
613	+	*/
614	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
615	+	(Class<? extends JSR166TestCase> testClass,
616	+	Class<ExtraData> dataClass,
617	+	ExtraData data) {
618	+	if (atLeastJava8()) {
619	+	String name = testClass.getName();
620	+	String name8 = name.replaceAll("Test$", "8Test");
621	+	if (name.equals(name8)) throw new AssertionError(name);
622	+	try {
623	+	return (Test)
624	+	Class.forName(name8)
625	+	.getMethod("testSuite", dataClass)
626	+	.invoke(null, data);
627	+	} catch (ReflectiveOperationException e) {
628	+	throw new AssertionError(e);
629	+	}
630	+	} else {
631	+	return new TestSuite();
632	+	}
633	+	}
634	+
635		// Delays for timing-dependent tests, in milliseconds.
636
637		public static long SHORT_DELAY_MS;
#	Line 362 | Line 639 | public class JSR166TestCase extends Test
639		public static long MEDIUM_DELAY_MS;
640		public static long LONG_DELAY_MS;
641
642	+	private static final long RANDOM_TIMEOUT;
643	+	private static final long RANDOM_EXPIRED_TIMEOUT;
644	+	private static final TimeUnit RANDOM_TIMEUNIT;
645	+	static {
646	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
647	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
648	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
649	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
650	+	TimeUnit[] timeUnits = TimeUnit.values();
651	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
652	+	}
653	+
654	+	/**
655	+	* Returns a timeout for use when any value at all will do.
656	+	*/
657	+	static long randomTimeout() { return RANDOM_TIMEOUT; }
658	+
659	+	/**
660	+	* Returns a timeout that means "no waiting", i.e. not positive.
661	+	*/
662	+	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
663	+
664	+	/**
665	+	* Returns a random non-null TimeUnit.
666	+	*/
667	+	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
668	+
669		/**
670	<	* Returns the shortest timed delay. This could
671	<	* be reimplemented to use for example a Property.
670	>	* Returns the shortest timed delay. This can be scaled up for
671	>	* slow machines using the jsr166.delay.factor system property,
672	>	* or via jtreg's -timeoutFactor: flag.
673	>	* http://openjdk.java.net/jtreg/command-help.html
674		*/
675		protected long getShortDelay() {
676	<	return 50;
676	>	return (long) (50 * delayFactor);
677		}
678
679		/**
#	Line 380 | Line 686 | public class JSR166TestCase extends Test
686		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
687		}
688
689	+	private static final long TIMEOUT_DELAY_MS
690	+	= (long) (12.0 * Math.cbrt(delayFactor));
691	+
692		/**
693	<	* Returns a timeout in milliseconds to be used in tests that
694	<	* verify that operations block or time out.
693	>	* Returns a timeout in milliseconds to be used in tests that verify
694	>	* that operations block or time out.  We want this to be longer
695	>	* than the OS scheduling quantum, but not too long, so don't scale
696	>	* linearly with delayFactor; we use "crazy" cube root instead.
697		*/
698	<	long timeoutMillis() {
699	<	return SHORT_DELAY_MS / 4;
698	>	static long timeoutMillis() {
699	>	return TIMEOUT_DELAY_MS;
700		}
701
702		/**
703	<	* Returns a new Date instance representing a time delayMillis
704	<	* milliseconds in the future.
703	>	* Returns a new Date instance representing a time at least
704	>	* delayMillis milliseconds in the future.
705		*/
706		Date delayedDate(long delayMillis) {
707	<	return new Date(System.currentTimeMillis() + delayMillis);
707	>	// Add 1 because currentTimeMillis is known to round into the past.
708	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
709		}
710
711		/**
712		* The first exception encountered if any threadAssertXXX method fails.
713		*/
714		private final AtomicReference<Throwable> threadFailure
715	<	= new AtomicReference<Throwable>(null);
715	>	= new AtomicReference<>(null);
716
717		/**
718		* Records an exception so that it can be rethrown later in the test
#	Line 409 | Line 721 | public class JSR166TestCase extends Test
721		* the same test have no effect.
722		*/
723		public void threadRecordFailure(Throwable t) {
724	+	System.err.println(t);
725	+	dumpTestThreads();
726		threadFailure.compareAndSet(null, t);
727		}
728
#	Line 416 | Line 730 | public class JSR166TestCase extends Test
730		setDelays();
731		}
732
733	+	void tearDownFail(String format, Object... args) {
734	+	String msg = toString() + ": " + String.format(format, args);
735	+	System.err.println(msg);
736	+	dumpTestThreads();
737	+	throw new AssertionError(msg);
738	+	}
739	+
740		/**
741		* Extra checks that get done for all test cases.
742		*
#	Line 434 | Line 755 | public class JSR166TestCase extends Test
755		throw (RuntimeException) t;
756		else if (t instanceof Exception)
757		throw (Exception) t;
758	<	else {
759	<	AssertionFailedError afe =
439	<	new AssertionFailedError(t.toString());
440	<	afe.initCause(t);
441	<	throw afe;
442	<	}
758	>	else
759	>	throw new AssertionError(t.toString(), t);
760		}
761
762		if (Thread.interrupted())
763	<	throw new AssertionFailedError("interrupt status set in main thread");
763	>	tearDownFail("interrupt status set in main thread");
764
765		checkForkJoinPoolThreadLeaks();
766		}
767
768		/**
769	<	* Find missing try { ... } finally { joinPool(e); }
769	>	* Finds missing PoolCleaners
770		*/
771		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
772	<	Thread[] survivors = new Thread[5];
772	>	Thread[] survivors = new Thread[7];
773		int count = Thread.enumerate(survivors);
774		for (int i = 0; i < count; i++) {
775		Thread thread = survivors[i];
#	Line 460 | Line 777 | public class JSR166TestCase extends Test
777		if (name.startsWith("ForkJoinPool-")) {
778		// give thread some time to terminate
779		thread.join(LONG_DELAY_MS);
780	<	if (!thread.isAlive()) continue;
781	<	thread.stop();
782	<	throw new AssertionFailedError
466	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
467	<	toString(), name));
780	>	if (thread.isAlive())
781	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
782	>	thread);
783		}
784		}
785	+
786	+	if (!ForkJoinPool.commonPool()
787	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
788	+	tearDownFail("ForkJoin common pool thread stuck");
789		}
790
791		/**
792		* Just like fail(reason), but additionally recording (using
793	<	* threadRecordFailure) any AssertionFailedError thrown, so that
794	<	* the current testcase will fail.
793	>	* threadRecordFailure) any AssertionError thrown, so that the
794	>	* current testcase will fail.
795		*/
796		public void threadFail(String reason) {
797		try {
798		fail(reason);
799	<	} catch (AssertionFailedError t) {
800	<	threadRecordFailure(t);
801	<	fail(reason);
799	>	} catch (AssertionError fail) {
800	>	threadRecordFailure(fail);
801	>	throw fail;
802		}
803		}
804
805		/**
806		* Just like assertTrue(b), but additionally recording (using
807	<	* threadRecordFailure) any AssertionFailedError thrown, so that
808	<	* the current testcase will fail.
807	>	* threadRecordFailure) any AssertionError thrown, so that the
808	>	* current testcase will fail.
809		*/
810		public void threadAssertTrue(boolean b) {
811		try {
812		assertTrue(b);
813	<	} catch (AssertionFailedError t) {
814	<	threadRecordFailure(t);
815	<	throw t;
813	>	} catch (AssertionError fail) {
814	>	threadRecordFailure(fail);
815	>	throw fail;
816		}
817		}
818
819		/**
820		* Just like assertFalse(b), but additionally recording (using
821	<	* threadRecordFailure) any AssertionFailedError thrown, so that
822	<	* the current testcase will fail.
821	>	* threadRecordFailure) any AssertionError thrown, so that the
822	>	* current testcase will fail.
823		*/
824		public void threadAssertFalse(boolean b) {
825		try {
826		assertFalse(b);
827	<	} catch (AssertionFailedError t) {
828	<	threadRecordFailure(t);
829	<	throw t;
827	>	} catch (AssertionError fail) {
828	>	threadRecordFailure(fail);
829	>	throw fail;
830		}
831		}
832
833		/**
834		* Just like assertNull(x), but additionally recording (using
835	<	* threadRecordFailure) any AssertionFailedError thrown, so that
836	<	* the current testcase will fail.
835	>	* threadRecordFailure) any AssertionError thrown, so that the
836	>	* current testcase will fail.
837		*/
838		public void threadAssertNull(Object x) {
839		try {
840		assertNull(x);
841	<	} catch (AssertionFailedError t) {
842	<	threadRecordFailure(t);
843	<	throw t;
841	>	} catch (AssertionError fail) {
842	>	threadRecordFailure(fail);
843	>	throw fail;
844		}
845		}
846
847		/**
848		* Just like assertEquals(x, y), but additionally recording (using
849	<	* threadRecordFailure) any AssertionFailedError thrown, so that
850	<	* the current testcase will fail.
849	>	* threadRecordFailure) any AssertionError thrown, so that the
850	>	* current testcase will fail.
851		*/
852		public void threadAssertEquals(long x, long y) {
853		try {
854		assertEquals(x, y);
855	<	} catch (AssertionFailedError t) {
856	<	threadRecordFailure(t);
857	<	throw t;
855	>	} catch (AssertionError fail) {
856	>	threadRecordFailure(fail);
857	>	throw fail;
858		}
859		}
860
861		/**
862		* Just like assertEquals(x, y), but additionally recording (using
863	<	* threadRecordFailure) any AssertionFailedError thrown, so that
864	<	* the current testcase will fail.
863	>	* threadRecordFailure) any AssertionError thrown, so that the
864	>	* current testcase will fail.
865		*/
866		public void threadAssertEquals(Object x, Object y) {
867		try {
868		assertEquals(x, y);
869	<	} catch (AssertionFailedError t) {
870	<	threadRecordFailure(t);
871	<	throw t;
872	<	} catch (Throwable t) {
873	<	threadUnexpectedException(t);
869	>	} catch (AssertionError fail) {
870	>	threadRecordFailure(fail);
871	>	throw fail;
872	>	} catch (Throwable fail) {
873	>	threadUnexpectedException(fail);
874		}
875		}
876
877		/**
878		* Just like assertSame(x, y), but additionally recording (using
879	<	* threadRecordFailure) any AssertionFailedError thrown, so that
880	<	* the current testcase will fail.
879	>	* threadRecordFailure) any AssertionError thrown, so that the
880	>	* current testcase will fail.
881		*/
882		public void threadAssertSame(Object x, Object y) {
883		try {
884		assertSame(x, y);
885	<	} catch (AssertionFailedError t) {
886	<	threadRecordFailure(t);
887	<	throw t;
885	>	} catch (AssertionError fail) {
886	>	threadRecordFailure(fail);
887	>	throw fail;
888		}
889		}
890
#	Line 585 | Line 904 | public class JSR166TestCase extends Test
904
905		/**
906		* Records the given exception using {@link #threadRecordFailure},
907	<	* then rethrows the exception, wrapping it in an
908	<	* AssertionFailedError if necessary.
907	>	* then rethrows the exception, wrapping it in an AssertionError
908	>	* if necessary.
909		*/
910		public void threadUnexpectedException(Throwable t) {
911		threadRecordFailure(t);
#	Line 595 | Line 914 | public class JSR166TestCase extends Test
914		throw (RuntimeException) t;
915		else if (t instanceof Error)
916		throw (Error) t;
917	<	else {
918	<	AssertionFailedError afe =
600	<	new AssertionFailedError("unexpected exception: " + t);
601	<	afe.initCause(t);
602	<	throw afe;
603	<	}
917	>	else
918	>	throw new AssertionError("unexpected exception: " + t, t);
919		}
920
921		/**
922		* Delays, via Thread.sleep, for the given millisecond delay, but
923		* if the sleep is shorter than specified, may re-sleep or yield
924	<	* until time elapses.
924	>	* until time elapses.  Ensures that the given time, as measured
925	>	* by System.nanoTime(), has elapsed.
926		*/
927		static void delay(long millis) throws InterruptedException {
928	<	long startTime = System.nanoTime();
929	<	long ns = millis * 1000 * 1000;
930	<	for (;;) {
928	>	long nanos = millis * (1000 * 1000);
929	>	final long wakeupTime = System.nanoTime() + nanos;
930	>	do {
931		if (millis > 0L)
932		Thread.sleep(millis);
933		else // too short to sleep
934		Thread.yield();
935	<	long d = ns - (System.nanoTime() - startTime);
936	<	if (d > 0L)
937	<	millis = d / (1000 * 1000);
938	<	else
939	<	break;
935	>	nanos = wakeupTime - System.nanoTime();
936	>	millis = nanos / (1000 * 1000);
937	>	} while (nanos >= 0L);
938	>	}
939	>
940	>	/**
941	>	* Allows use of try-with-resources with per-test thread pools.
942	>	*/
943	>	class PoolCleaner implements AutoCloseable {
944	>	private final ExecutorService pool;
945	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
946	>	public void close() { joinPool(pool); }
947	>	}
948	>
949	>	/**
950	>	* An extension of PoolCleaner that has an action to release the pool.
951	>	*/
952	>	class PoolCleanerWithReleaser extends PoolCleaner {
953	>	private final Runnable releaser;
954	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
955	>	super(pool);
956	>	this.releaser = releaser;
957	>	}
958	>	public void close() {
959	>	try {
960	>	releaser.run();
961	>	} finally {
962	>	super.close();
963	>	}
964		}
965		}
966
967	+	PoolCleaner cleaner(ExecutorService pool) {
968	+	return new PoolCleaner(pool);
969	+	}
970	+
971	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
972	+	return new PoolCleanerWithReleaser(pool, releaser);
973	+	}
974	+
975	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
976	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
977	+	}
978	+
979	+	Runnable releaser(final CountDownLatch latch) {
980	+	return new Runnable() { public void run() {
981	+	do { latch.countDown(); }
982	+	while (latch.getCount() > 0);
983	+	}};
984	+	}
985	+
986	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
987	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
988	+	}
989	+
990	+	Runnable releaser(final AtomicBoolean flag) {
991	+	return new Runnable() { public void run() { flag.set(true); }};
992	+	}
993	+
994		/**
995		* Waits out termination of a thread pool or fails doing so.
996		*/
997	<	void joinPool(ExecutorService exec) {
997	>	void joinPool(ExecutorService pool) {
998		try {
999	<	exec.shutdown();
1000	<	assertTrue("ExecutorService did not terminate in a timely manner",
1001	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
999	>	pool.shutdown();
1000	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1001	>	try {
1002	>	threadFail("ExecutorService " + pool +
1003	>	" did not terminate in a timely manner");
1004	>	} finally {
1005	>	// last resort, for the benefit of subsequent tests
1006	>	pool.shutdownNow();
1007	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1008	>	}
1009	>	}
1010		} catch (SecurityException ok) {
1011		// Allowed in case test doesn't have privs
1012	<	} catch (InterruptedException ie) {
1013	<	fail("Unexpected InterruptedException");
1012	>	} catch (InterruptedException fail) {
1013	>	threadFail("Unexpected InterruptedException");
1014		}
1015		}
1016
1017		/**
1018	<	* A debugging tool to print all stack traces, as jstack does.
1018	>	* Like Runnable, but with the freedom to throw anything.
1019	>	* junit folks had the same idea:
1020	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1021		*/
1022	<	static void printAllStackTraces() {
646	<	for (ThreadInfo info :
647	<	ManagementFactory.getThreadMXBean()
648	<	.dumpAllThreads(true, true))
649	<	System.err.print(info);
650	<	}
1022	>	interface Action { public void run() throws Throwable; }
1023
1024		/**
1025	<	* Checks that thread does not terminate within the default
1026	<	* millisecond delay of {@code timeoutMillis()}.
1025	>	* Runs all the given actions in parallel, failing if any fail.
1026	>	* Useful for running multiple variants of tests that are
1027	>	* necessarily individually slow because they must block.
1028		*/
1029	<	void assertThreadStaysAlive(Thread thread) {
1030	<	assertThreadStaysAlive(thread, timeoutMillis());
1029	>	void testInParallel(Action ... actions) {
1030	>	ExecutorService pool = Executors.newCachedThreadPool();
1031	>	try (PoolCleaner cleaner = cleaner(pool)) {
1032	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1033	>	for (final Action action : actions)
1034	>	futures.add(pool.submit(new CheckedRunnable() {
1035	>	public void realRun() throws Throwable { action.run();}}));
1036	>	for (Future<?> future : futures)
1037	>	try {
1038	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1039	>	} catch (ExecutionException ex) {
1040	>	threadUnexpectedException(ex.getCause());
1041	>	} catch (Exception ex) {
1042	>	threadUnexpectedException(ex);
1043	>	}
1044	>	}
1045		}
1046
1047		/**
1048	<	* Checks that thread does not terminate within the given millisecond delay.
1048	>	* A debugging tool to print stack traces of most threads, as jstack does.
1049	>	* Uninteresting threads are filtered out.
1050		*/
1051	<	void assertThreadStaysAlive(Thread thread, long millis) {
1052	<	try {
1053	<	// No need to optimize the failing case via Thread.join.
1054	<	delay(millis);
1055	<	assertTrue(thread.isAlive());
1056	<	} catch (InterruptedException ie) {
1057	<	fail("Unexpected InterruptedException");
1051	>	static void dumpTestThreads() {
1052	>	SecurityManager sm = System.getSecurityManager();
1053	>	if (sm != null) {
1054	>	try {
1055	>	System.setSecurityManager(null);
1056	>	} catch (SecurityException giveUp) {
1057	>	return;
1058	>	}
1059		}
671	–	}
1060
1061	<	/**
1062	<	* Checks that the threads do not terminate within the default
1063	<	* millisecond delay of {@code timeoutMillis()}.
1064	<	*/
1065	<	void assertThreadsStayAlive(Thread... threads) {
1066	<	assertThreadsStayAlive(timeoutMillis(), threads);
1061	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1062	>	System.err.println("------ stacktrace dump start ------");
1063	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1064	>	final String name = info.getThreadName();
1065	>	String lockName;
1066	>	if ("Signal Dispatcher".equals(name))
1067	>	continue;
1068	>	if ("Reference Handler".equals(name)
1069	>	&& (lockName = info.getLockName()) != null
1070	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1071	>	continue;
1072	>	if ("Finalizer".equals(name)
1073	>	&& (lockName = info.getLockName()) != null
1074	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1075	>	continue;
1076	>	if ("checkForWedgedTest".equals(name))
1077	>	continue;
1078	>	System.err.print(info);
1079	>	}
1080	>	System.err.println("------ stacktrace dump end ------");
1081	>
1082	>	if (sm != null) System.setSecurityManager(sm);
1083		}
1084
1085		/**
1086	<	* Checks that the threads do not terminate within the given millisecond delay.
1086	>	* Checks that thread eventually enters the expected blocked thread state.
1087		*/
1088	<	void assertThreadsStayAlive(long millis, Thread... threads) {
1089	<	try {
1090	<	// No need to optimize the failing case via Thread.join.
1091	<	delay(millis);
1092	<	for (Thread thread : threads)
1093	<	assertTrue(thread.isAlive());
1094	<	} catch (InterruptedException ie) {
1095	<	fail("Unexpected InterruptedException");
1088	>	void assertThreadBlocks(Thread thread, Thread.State expected) {
1089	>	// always sleep at least 1 ms, with high probability avoiding
1090	>	// transitory states
1091	>	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1092	>	try { delay(1); }
1093	>	catch (InterruptedException fail) {
1094	>	throw new AssertionError("Unexpected InterruptedException", fail);
1095	>	}
1096	>	Thread.State s = thread.getState();
1097	>	if (s == expected)
1098	>	return;
1099	>	else if (s == Thread.State.TERMINATED)
1100	>	fail("Unexpected thread termination");
1101		}
1102	+	fail("timed out waiting for thread to enter thread state " + expected);
1103		}
1104
1105		/**
#	Line 709 | Line 1119 | public class JSR166TestCase extends Test
1119		future.get(timeoutMillis, MILLISECONDS);
1120		shouldThrow();
1121		} catch (TimeoutException success) {
1122	<	} catch (Exception e) {
1123	<	threadUnexpectedException(e);
1122	>	} catch (Exception fail) {
1123	>	threadUnexpectedException(fail);
1124		} finally { future.cancel(true); }
1125		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1126		}
#	Line 730 | Line 1140 | public class JSR166TestCase extends Test
1140		}
1141
1142		/**
1143	+	* The maximum number of consecutive spurious wakeups we should
1144	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1145	+	*/
1146	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1147	+
1148	+	/**
1149		* The number of elements to place in collections, arrays, etc.
1150		*/
1151		public static final int SIZE = 20;
#	Line 833 | Line 1249 | public class JSR166TestCase extends Test
1249		}
1250		public void refresh() {}
1251		public String toString() {
1252	<	List<Permission> ps = new ArrayList<Permission>();
1252	>	List<Permission> ps = new ArrayList<>();
1253		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1254		ps.add(e.nextElement());
1255		return "AdjustablePolicy with permissions " + ps;
#	Line 861 | Line 1277 | public class JSR166TestCase extends Test
1277
1278		/**
1279		* Sleeps until the given time has elapsed.
1280	<	* Throws AssertionFailedError if interrupted.
1280	>	* Throws AssertionError if interrupted.
1281		*/
1282	<	void sleep(long millis) {
1282	>	static void sleep(long millis) {
1283		try {
1284		delay(millis);
1285	<	} catch (InterruptedException ie) {
1286	<	AssertionFailedError afe =
871	<	new AssertionFailedError("Unexpected InterruptedException");
872	<	afe.initCause(ie);
873	<	throw afe;
1285	>	} catch (InterruptedException fail) {
1286	>	throw new AssertionError("Unexpected InterruptedException", fail);
1287		}
1288		}
1289
#	Line 879 | Line 1292 | public class JSR166TestCase extends Test
1292		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1293		*/
1294		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1295	<	long startTime = System.nanoTime();
1295	>	long startTime = 0L;
1296		for (;;) {
1297		Thread.State s = thread.getState();
1298		if (s == Thread.State.BLOCKED ||
#	Line 888 | Line 1301 | public class JSR166TestCase extends Test
1301		return;
1302		else if (s == Thread.State.TERMINATED)
1303		fail("Unexpected thread termination");
1304	+	else if (startTime == 0L)
1305	+	startTime = System.nanoTime();
1306		else if (millisElapsedSince(startTime) > timeoutMillis) {
1307		threadAssertTrue(thread.isAlive());
1308	<	return;
1308	>	fail("timed out waiting for thread to enter wait state");
1309		}
1310		Thread.yield();
1311		}
1312		}
1313
1314		/**
1315	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1316	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1315	>	* Spin-waits up to the specified number of milliseconds for the given
1316	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1317	>	* and additionally satisfy the given condition.
1318	>	*/
1319	>	void waitForThreadToEnterWaitState(
1320	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1321	>	long startTime = 0L;
1322	>	for (;;) {
1323	>	Thread.State s = thread.getState();
1324	>	if (s == Thread.State.BLOCKED ||
1325	>	s == Thread.State.WAITING ||
1326	>	s == Thread.State.TIMED_WAITING) {
1327	>	try {
1328	>	if (waitingForGodot.call())
1329	>	return;
1330	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1331	>	}
1332	>	else if (s == Thread.State.TERMINATED)
1333	>	fail("Unexpected thread termination");
1334	>	else if (startTime == 0L)
1335	>	startTime = System.nanoTime();
1336	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1337	>	threadAssertTrue(thread.isAlive());
1338	>	fail("timed out waiting for thread to enter wait state");
1339	>	}
1340	>	Thread.yield();
1341	>	}
1342	>	}
1343	>
1344	>	/**
1345	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1346	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1347		*/
1348		void waitForThreadToEnterWaitState(Thread thread) {
1349		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1350		}
1351
1352		/**
1353	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1354	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1355	+	* and additionally satisfy the given condition.
1356	+	*/
1357	+	void waitForThreadToEnterWaitState(
1358	+	Thread thread, Callable<Boolean> waitingForGodot) {
1359	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1360	+	}
1361	+
1362	+	/**
1363		* Returns the number of milliseconds since time given by
1364		* startNanoTime, which must have been previously returned from a
1365	<	* call to {@link System.nanoTime()}.
1365	>	* call to {@link System#nanoTime()}.
1366		*/
1367		static long millisElapsedSince(long startNanoTime) {
1368		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1369		}
1370
1371	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1372	+	//         long startTime = System.nanoTime();
1373	+	//         try {
1374	+	//             r.run();
1375	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1376	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1377	+	//             throw new AssertionError("did not return promptly");
1378	+	//     }
1379	+
1380	+	//     void assertTerminatesPromptly(Runnable r) {
1381	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1382	+	//     }
1383	+
1384	+	/**
1385	+	* Checks that timed f.get() returns the expected value, and does not
1386	+	* wait for the timeout to elapse before returning.
1387	+	*/
1388	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1389	+	long startTime = System.nanoTime();
1390	+	try {
1391	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1392	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1393	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1394	+	throw new AssertionError("timed get did not return promptly");
1395	+	}
1396	+
1397	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1398	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1399	+	}
1400	+
1401		/**
1402		* Returns a new started daemon Thread running the given runnable.
1403		*/
#	Line 931 | Line 1416 | public class JSR166TestCase extends Test
1416		void awaitTermination(Thread t, long timeoutMillis) {
1417		try {
1418		t.join(timeoutMillis);
1419	<	} catch (InterruptedException ie) {
1420	<	threadUnexpectedException(ie);
1419	>	} catch (InterruptedException fail) {
1420	>	threadUnexpectedException(fail);
1421		} finally {
1422		if (t.getState() != Thread.State.TERMINATED) {
1423		t.interrupt();
1424	<	fail("Test timed out");
1424	>	threadFail("timed out waiting for thread to terminate");
1425		}
1426		}
1427		}
#	Line 958 | Line 1443 | public class JSR166TestCase extends Test
1443		public final void run() {
1444		try {
1445		realRun();
1446	<	} catch (Throwable t) {
1447	<	threadUnexpectedException(t);
963	<	}
964	<	}
965	<	}
966	<
967	<	public abstract class RunnableShouldThrow implements Runnable {
968	<	protected abstract void realRun() throws Throwable;
969	<
970	<	final Class<?> exceptionClass;
971	<
972	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
973	<	this.exceptionClass = exceptionClass;
974	<	}
975	<
976	<	public final void run() {
977	<	try {
978	<	realRun();
979	<	threadShouldThrow(exceptionClass.getSimpleName());
980	<	} catch (Throwable t) {
981	<	if (! exceptionClass.isInstance(t))
982	<	threadUnexpectedException(t);
1446	>	} catch (Throwable fail) {
1447	>	threadUnexpectedException(fail);
1448		}
1449		}
1450		}
#	Line 1013 | Line 1478 | public class JSR166TestCase extends Test
1478		threadShouldThrow("InterruptedException");
1479		} catch (InterruptedException success) {
1480		threadAssertFalse(Thread.interrupted());
1481	<	} catch (Throwable t) {
1482	<	threadUnexpectedException(t);
1481	>	} catch (Throwable fail) {
1482	>	threadUnexpectedException(fail);
1483		}
1484		}
1485		}
#	Line 1025 | Line 1490 | public class JSR166TestCase extends Test
1490		public final T call() {
1491		try {
1492		return realCall();
1493	<	} catch (Throwable t) {
1494	<	threadUnexpectedException(t);
1493	>	} catch (Throwable fail) {
1494	>	threadUnexpectedException(fail);
1495		return null;
1496		}
1497		}
#	Line 1043 | Line 1508 | public class JSR166TestCase extends Test
1508		return result;
1509		} catch (InterruptedException success) {
1510		threadAssertFalse(Thread.interrupted());
1511	<	} catch (Throwable t) {
1512	<	threadUnexpectedException(t);
1511	>	} catch (Throwable fail) {
1512	>	threadUnexpectedException(fail);
1513		}
1514		return null;
1515		}
#	Line 1061 | Line 1526 | public class JSR166TestCase extends Test
1526		public static final String TEST_STRING = "a test string";
1527
1528		public static class StringTask implements Callable<String> {
1529	<	public String call() { return TEST_STRING; }
1529	>	final String value;
1530	>	public StringTask() { this(TEST_STRING); }
1531	>	public StringTask(String value) { this.value = value; }
1532	>	public String call() { return value; }
1533		}
1534
1535		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1074 | Line 1542 | public class JSR166TestCase extends Test
1542		}};
1543		}
1544
1545	<	public Runnable awaiter(final CountDownLatch latch) {
1545	>	public Runnable countDowner(final CountDownLatch latch) {
1546		return new CheckedRunnable() {
1547		public void realRun() throws InterruptedException {
1548	<	await(latch);
1548	>	latch.countDown();
1549		}};
1550		}
1551
1552	<	public void await(CountDownLatch latch) {
1552	>	class LatchAwaiter extends CheckedRunnable {
1553	>	static final int NEW = 0;
1554	>	static final int RUNNING = 1;
1555	>	static final int DONE = 2;
1556	>	final CountDownLatch latch;
1557	>	int state = NEW;
1558	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1559	>	public void realRun() throws InterruptedException {
1560	>	state = 1;
1561	>	await(latch);
1562	>	state = 2;
1563	>	}
1564	>	}
1565	>
1566	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1567	>	return new LatchAwaiter(latch);
1568	>	}
1569	>
1570	>	public void await(CountDownLatch latch, long timeoutMillis) {
1571		try {
1572	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1573	<	} catch (Throwable t) {
1574	<	threadUnexpectedException(t);
1572	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1573	>	fail("timed out waiting for CountDownLatch for "
1574	>	+ (timeoutMillis/1000) + " sec");
1575	>	} catch (Throwable fail) {
1576	>	threadUnexpectedException(fail);
1577		}
1578		}
1579
1580	+	public void await(CountDownLatch latch) {
1581	+	await(latch, LONG_DELAY_MS);
1582	+	}
1583	+
1584		public void await(Semaphore semaphore) {
1585		try {
1586	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1587	<	} catch (Throwable t) {
1588	<	threadUnexpectedException(t);
1586	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1587	>	fail("timed out waiting for Semaphore for "
1588	>	+ (LONG_DELAY_MS/1000) + " sec");
1589	>	} catch (Throwable fail) {
1590	>	threadUnexpectedException(fail);
1591	>	}
1592	>	}
1593	>
1594	>	public void await(CyclicBarrier barrier) {
1595	>	try {
1596	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1597	>	} catch (Throwable fail) {
1598	>	threadUnexpectedException(fail);
1599		}
1600		}
1601
#	Line 1111 | Line 1613 | public class JSR166TestCase extends Test
1613		//         long startTime = System.nanoTime();
1614		//         while (!flag.get()) {
1615		//             if (millisElapsedSince(startTime) > timeoutMillis)
1616	<	//                 throw new AssertionFailedError("timed out");
1616	>	//                 throw new AssertionError("timed out");
1617		//             Thread.yield();
1618		//         }
1619		//     }
#	Line 1120 | Line 1622 | public class JSR166TestCase extends Test
1622		public String call() { throw new NullPointerException(); }
1623		}
1624
1123	–	public static class CallableOne implements Callable<Integer> {
1124	–	public Integer call() { return one; }
1125	–	}
1126	–
1127	–	public class ShortRunnable extends CheckedRunnable {
1128	–	protected void realRun() throws Throwable {
1129	–	delay(SHORT_DELAY_MS);
1130	–	}
1131	–	}
1132	–
1133	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1134	–	protected void realRun() throws InterruptedException {
1135	–	delay(SHORT_DELAY_MS);
1136	–	}
1137	–	}
1138	–
1139	–	public class SmallRunnable extends CheckedRunnable {
1140	–	protected void realRun() throws Throwable {
1141	–	delay(SMALL_DELAY_MS);
1142	–	}
1143	–	}
1144	–
1625		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1626		protected void realRun() {
1627		try {
#	Line 1150 | Line 1630 | public class JSR166TestCase extends Test
1630		}
1631		}
1632
1153	–	public class SmallCallable extends CheckedCallable {
1154	–	protected Object realCall() throws InterruptedException {
1155	–	delay(SMALL_DELAY_MS);
1156	–	return Boolean.TRUE;
1157	–	}
1158	–	}
1159	–
1160	–	public class MediumRunnable extends CheckedRunnable {
1161	–	protected void realRun() throws Throwable {
1162	–	delay(MEDIUM_DELAY_MS);
1163	–	}
1164	–	}
1165	–
1166	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1167	–	protected void realRun() throws InterruptedException {
1168	–	delay(MEDIUM_DELAY_MS);
1169	–	}
1170	–	}
1171	–
1633		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1634		return new CheckedRunnable() {
1635		protected void realRun() {
#	Line 1178 | Line 1639 | public class JSR166TestCase extends Test
1639		}};
1640		}
1641
1181	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1182	–	protected void realRun() {
1183	–	try {
1184	–	delay(MEDIUM_DELAY_MS);
1185	–	} catch (InterruptedException ok) {}
1186	–	}
1187	–	}
1188	–
1189	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1190	–	protected void realRun() {
1191	–	try {
1192	–	delay(LONG_DELAY_MS);
1193	–	} catch (InterruptedException ok) {}
1194	–	}
1195	–	}
1196	–
1642		/**
1643		* For use as ThreadFactory in constructors
1644		*/
#	Line 1207 | Line 1652 | public class JSR166TestCase extends Test
1652		boolean isDone();
1653		}
1654
1210	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1211	–	return new TrackedRunnable() {
1212	–	private volatile boolean done = false;
1213	–	public boolean isDone() { return done; }
1214	–	public void run() {
1215	–	try {
1216	–	delay(timeoutMillis);
1217	–	done = true;
1218	–	} catch (InterruptedException ok) {}
1219	–	}
1220	–	};
1221	–	}
1222	–
1223	–	public static class TrackedShortRunnable implements Runnable {
1224	–	public volatile boolean done = false;
1225	–	public void run() {
1226	–	try {
1227	–	delay(SHORT_DELAY_MS);
1228	–	done = true;
1229	–	} catch (InterruptedException ok) {}
1230	–	}
1231	–	}
1232	–
1233	–	public static class TrackedSmallRunnable implements Runnable {
1234	–	public volatile boolean done = false;
1235	–	public void run() {
1236	–	try {
1237	–	delay(SMALL_DELAY_MS);
1238	–	done = true;
1239	–	} catch (InterruptedException ok) {}
1240	–	}
1241	–	}
1242	–
1243	–	public static class TrackedMediumRunnable implements Runnable {
1244	–	public volatile boolean done = false;
1245	–	public void run() {
1246	–	try {
1247	–	delay(MEDIUM_DELAY_MS);
1248	–	done = true;
1249	–	} catch (InterruptedException ok) {}
1250	–	}
1251	–	}
1252	–
1253	–	public static class TrackedLongRunnable implements Runnable {
1254	–	public volatile boolean done = false;
1255	–	public void run() {
1256	–	try {
1257	–	delay(LONG_DELAY_MS);
1258	–	done = true;
1259	–	} catch (InterruptedException ok) {}
1260	–	}
1261	–	}
1262	–
1655		public static class TrackedNoOpRunnable implements Runnable {
1656		public volatile boolean done = false;
1657		public void run() {
#	Line 1267 | Line 1659 | public class JSR166TestCase extends Test
1659		}
1660		}
1661
1270	–	public static class TrackedCallable implements Callable {
1271	–	public volatile boolean done = false;
1272	–	public Object call() {
1273	–	try {
1274	–	delay(SMALL_DELAY_MS);
1275	–	done = true;
1276	–	} catch (InterruptedException ok) {}
1277	–	return Boolean.TRUE;
1278	–	}
1279	–	}
1280	–
1662		/**
1663		* Analog of CheckedRunnable for RecursiveAction
1664		*/
#	Line 1287 | Line 1668 | public class JSR166TestCase extends Test
1668		@Override protected final void compute() {
1669		try {
1670		realCompute();
1671	<	} catch (Throwable t) {
1672	<	threadUnexpectedException(t);
1671	>	} catch (Throwable fail) {
1672	>	threadUnexpectedException(fail);
1673		}
1674		}
1675		}
#	Line 1302 | Line 1683 | public class JSR166TestCase extends Test
1683		@Override protected final T compute() {
1684		try {
1685		return realCompute();
1686	<	} catch (Throwable t) {
1687	<	threadUnexpectedException(t);
1686	>	} catch (Throwable fail) {
1687	>	threadUnexpectedException(fail);
1688		return null;
1689		}
1690		}
#	Line 1319 | Line 1700 | public class JSR166TestCase extends Test
1700
1701		/**
1702		* A CyclicBarrier that uses timed await and fails with
1703	<	* AssertionFailedErrors instead of throwing checked exceptions.
1703	>	* AssertionErrors instead of throwing checked exceptions.
1704		*/
1705	<	public class CheckedBarrier extends CyclicBarrier {
1705	>	public static class CheckedBarrier extends CyclicBarrier {
1706		public CheckedBarrier(int parties) { super(parties); }
1707
1708		public int await() {
1709		try {
1710		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1711	<	} catch (TimeoutException e) {
1712	<	throw new AssertionFailedError("timed out");
1713	<	} catch (Exception e) {
1714	<	AssertionFailedError afe =
1334	<	new AssertionFailedError("Unexpected exception: " + e);
1335	<	afe.initCause(e);
1336	<	throw afe;
1711	>	} catch (TimeoutException timedOut) {
1712	>	throw new AssertionError("timed out");
1713	>	} catch (Exception fail) {
1714	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1715		}
1716		}
1717		}
#	Line 1344 | Line 1722 | public class JSR166TestCase extends Test
1722		assertEquals(0, q.size());
1723		assertNull(q.peek());
1724		assertNull(q.poll());
1725	<	assertNull(q.poll(0, MILLISECONDS));
1725	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1726		assertEquals(q.toString(), "[]");
1727		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1728		assertFalse(q.iterator().hasNext());
#	Line 1360 | Line 1738 | public class JSR166TestCase extends Test
1738		q.remove();
1739		shouldThrow();
1740		} catch (NoSuchElementException success) {}
1741	<	} catch (InterruptedException ie) {
1364	<	threadUnexpectedException(ie);
1365	<	}
1741	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1742		}
1743
1744		void assertSerialEquals(Object x, Object y) {
#	Line 1381 | Line 1757 | public class JSR166TestCase extends Test
1757		oos.flush();
1758		oos.close();
1759		return bos.toByteArray();
1760	<	} catch (Throwable t) {
1761	<	threadUnexpectedException(t);
1760	>	} catch (Throwable fail) {
1761	>	threadUnexpectedException(fail);
1762		return new byte[0];
1763		}
1764		}
1765
1766	+	void assertImmutable(final Object o) {
1767	+	if (o instanceof Collection) {
1768	+	assertThrows(
1769	+	UnsupportedOperationException.class,
1770	+	new Runnable() { public void run() {
1771	+	((Collection) o).add(null);}});
1772	+	}
1773	+	}
1774	+
1775		@SuppressWarnings("unchecked")
1776		<T> T serialClone(T o) {
1777		try {
1778		ObjectInputStream ois = new ObjectInputStream
1779		(new ByteArrayInputStream(serialBytes(o)));
1780		T clone = (T) ois.readObject();
1781	+	if (o == clone) assertImmutable(o);
1782		assertSame(o.getClass(), clone.getClass());
1783		return clone;
1784	<	} catch (Throwable t) {
1785	<	threadUnexpectedException(t);
1784	>	} catch (Throwable fail) {
1785	>	threadUnexpectedException(fail);
1786	>	return null;
1787	>	}
1788	>	}
1789	>
1790	>	/**
1791	>	* A version of serialClone that leaves error handling (for
1792	>	* e.g. NotSerializableException) up to the caller.
1793	>	*/
1794	>	@SuppressWarnings("unchecked")
1795	>	<T> T serialClonePossiblyFailing(T o)
1796	>	throws ReflectiveOperationException, java.io.IOException {
1797	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1798	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1799	>	oos.writeObject(o);
1800	>	oos.flush();
1801	>	oos.close();
1802	>	ObjectInputStream ois = new ObjectInputStream
1803	>	(new ByteArrayInputStream(bos.toByteArray()));
1804	>	T clone = (T) ois.readObject();
1805	>	if (o == clone) assertImmutable(o);
1806	>	assertSame(o.getClass(), clone.getClass());
1807	>	return clone;
1808	>	}
1809	>
1810	>	/**
1811	>	* If o implements Cloneable and has a public clone method,
1812	>	* returns a clone of o, else null.
1813	>	*/
1814	>	@SuppressWarnings("unchecked")
1815	>	<T> T cloneableClone(T o) {
1816	>	if (!(o instanceof Cloneable)) return null;
1817	>	final T clone;
1818	>	try {
1819	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1820	>	} catch (NoSuchMethodException ok) {
1821		return null;
1822	+	} catch (ReflectiveOperationException unexpected) {
1823	+	throw new Error(unexpected);
1824		}
1825	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1826	+	assertSame(o.getClass(), clone.getClass());
1827	+	return clone;
1828		}
1829
1830		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
#	Line 1408 | Line 1834 | public class JSR166TestCase extends Test
1834		try { throwingAction.run(); }
1835		catch (Throwable t) {
1836		threw = true;
1837	<	if (!expectedExceptionClass.isInstance(t)) {
1838	<	AssertionFailedError afe =
1839	<	new AssertionFailedError
1840	<	("Expected " + expectedExceptionClass.getName() +
1841	<	", got " + t.getClass().getName());
1416	<	afe.initCause(t);
1417	<	threadUnexpectedException(afe);
1418	<	}
1837	>	if (!expectedExceptionClass.isInstance(t))
1838	>	throw new AssertionError(
1839	>	"Expected " + expectedExceptionClass.getName() +
1840	>	", got " + t.getClass().getName(),
1841	>	t);
1842		}
1843		if (!threw)
1844		shouldThrow(expectedExceptionClass.getName());
1845		}
1846		}
1847	+
1848	+	public void assertIteratorExhausted(Iterator<?> it) {
1849	+	try {
1850	+	it.next();
1851	+	shouldThrow();
1852	+	} catch (NoSuchElementException success) {}
1853	+	assertFalse(it.hasNext());
1854	+	}
1855	+
1856	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1857	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1858	+	}
1859	+
1860	+	public Runnable runnableThrowing(final RuntimeException ex) {
1861	+	return new Runnable() { public void run() { throw ex; }};
1862	+	}
1863	+
1864	+	/** A reusable thread pool to be shared by tests. */
1865	+	static final ExecutorService cachedThreadPool =
1866	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1867	+	1000L, MILLISECONDS,
1868	+	new SynchronousQueue<Runnable>());
1869	+
1870	+	static <T> void shuffle(T[] array) {
1871	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1872	+	}
1873	+
1874	+	/**
1875	+	* Returns the same String as would be returned by {@link
1876	+	* Object#toString}, whether or not the given object's class
1877	+	* overrides toString().
1878	+	*
1879	+	* @see System#identityHashCode
1880	+	*/
1881	+	static String identityString(Object x) {
1882	+	return x.getClass().getName()
1883	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1884	+	}
1885	+
1886	+	// --- Shared assertions for Executor tests ---
1887	+
1888	+	/**
1889	+	* Returns maximum number of tasks that can be submitted to given
1890	+	* pool (with bounded queue) before saturation (when submission
1891	+	* throws RejectedExecutionException).
1892	+	*/
1893	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1894	+	BlockingQueue<Runnable> q = pool.getQueue();
1895	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1896	+	}
1897	+
1898	+	@SuppressWarnings("FutureReturnValueIgnored")
1899	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1900	+	try {
1901	+	e.execute((Runnable) null);
1902	+	shouldThrow();
1903	+	} catch (NullPointerException success) {}
1904	+
1905	+	if (! (e instanceof ExecutorService)) return;
1906	+	ExecutorService es = (ExecutorService) e;
1907	+	try {
1908	+	es.submit((Runnable) null);
1909	+	shouldThrow();
1910	+	} catch (NullPointerException success) {}
1911	+	try {
1912	+	es.submit((Runnable) null, Boolean.TRUE);
1913	+	shouldThrow();
1914	+	} catch (NullPointerException success) {}
1915	+	try {
1916	+	es.submit((Callable) null);
1917	+	shouldThrow();
1918	+	} catch (NullPointerException success) {}
1919	+
1920	+	if (! (e instanceof ScheduledExecutorService)) return;
1921	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1922	+	try {
1923	+	ses.schedule((Runnable) null,
1924	+	randomTimeout(), randomTimeUnit());
1925	+	shouldThrow();
1926	+	} catch (NullPointerException success) {}
1927	+	try {
1928	+	ses.schedule((Callable) null,
1929	+	randomTimeout(), randomTimeUnit());
1930	+	shouldThrow();
1931	+	} catch (NullPointerException success) {}
1932	+	try {
1933	+	ses.scheduleAtFixedRate((Runnable) null,
1934	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1935	+	shouldThrow();
1936	+	} catch (NullPointerException success) {}
1937	+	try {
1938	+	ses.scheduleWithFixedDelay((Runnable) null,
1939	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1940	+	shouldThrow();
1941	+	} catch (NullPointerException success) {}
1942	+	}
1943	+
1944	+	void setRejectedExecutionHandler(
1945	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1946	+	p.setRejectedExecutionHandler(handler);
1947	+	assertSame(handler, p.getRejectedExecutionHandler());
1948	+	}
1949	+
1950	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1951	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1952	+	final long savedTaskCount = p.getTaskCount();
1953	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1954	+	final int savedQueueSize = p.getQueue().size();
1955	+	final boolean stock = (p.getClass().getClassLoader() == null);
1956	+
1957	+	Runnable r = () -> {};
1958	+	Callable<Boolean> c = () -> Boolean.TRUE;
1959	+
1960	+	class Recorder implements RejectedExecutionHandler {
1961	+	public volatile Runnable r = null;
1962	+	public volatile ThreadPoolExecutor p = null;
1963	+	public void reset() { r = null; p = null; }
1964	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1965	+	assertNull(this.r);
1966	+	assertNull(this.p);
1967	+	this.r = r;
1968	+	this.p = p;
1969	+	}
1970	+	}
1971	+
1972	+	// check custom handler is invoked exactly once per task
1973	+	Recorder recorder = new Recorder();
1974	+	setRejectedExecutionHandler(p, recorder);
1975	+	for (int i = 2; i--> 0; ) {
1976	+	recorder.reset();
1977	+	p.execute(r);
1978	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1979	+	assertSame(r, recorder.r);
1980	+	assertSame(p, recorder.p);
1981	+
1982	+	recorder.reset();
1983	+	assertFalse(p.submit(r).isDone());
1984	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1985	+	assertSame(p, recorder.p);
1986	+
1987	+	recorder.reset();
1988	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1989	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1990	+	assertSame(p, recorder.p);
1991	+
1992	+	recorder.reset();
1993	+	assertFalse(p.submit(c).isDone());
1994	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1995	+	assertSame(p, recorder.p);
1996	+
1997	+	if (p instanceof ScheduledExecutorService) {
1998	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
1999	+	ScheduledFuture<?> future;
2000	+
2001	+	recorder.reset();
2002	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2003	+	assertFalse(future.isDone());
2004	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2005	+	assertSame(p, recorder.p);
2006	+
2007	+	recorder.reset();
2008	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2009	+	assertFalse(future.isDone());
2010	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2011	+	assertSame(p, recorder.p);
2012	+
2013	+	recorder.reset();
2014	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2015	+	assertFalse(future.isDone());
2016	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2017	+	assertSame(p, recorder.p);
2018	+
2019	+	recorder.reset();
2020	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2021	+	assertFalse(future.isDone());
2022	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2023	+	assertSame(p, recorder.p);
2024	+	}
2025	+	}
2026	+
2027	+	// Checking our custom handler above should be sufficient, but
2028	+	// we add some integration tests of standard handlers.
2029	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2030	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2031	+
2032	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2033	+	try {
2034	+	p.execute(setThread);
2035	+	shouldThrow();
2036	+	} catch (RejectedExecutionException success) {}
2037	+	assertNull(thread.get());
2038	+
2039	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2040	+	p.execute(setThread);
2041	+	assertNull(thread.get());
2042	+
2043	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2044	+	p.execute(setThread);
2045	+	if (p.isShutdown())
2046	+	assertNull(thread.get());
2047	+	else
2048	+	assertSame(Thread.currentThread(), thread.get());
2049	+
2050	+	setRejectedExecutionHandler(p, savedHandler);
2051	+
2052	+	// check that pool was not perturbed by handlers
2053	+	assertEquals(savedTaskCount, p.getTaskCount());
2054	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2055	+	assertEquals(savedQueueSize, p.getQueue().size());
2056	+	}
2057	+
2058	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2059	+	assertEquals(x, y);
2060	+	assertEquals(y, x);
2061	+	assertEquals(x.isEmpty(), y.isEmpty());
2062	+	assertEquals(x.size(), y.size());
2063	+	if (x instanceof List) {
2064	+	assertEquals(x.toString(), y.toString());
2065	+	}
2066	+	if (x instanceof List || x instanceof Set) {
2067	+	assertEquals(x.hashCode(), y.hashCode());
2068	+	}
2069	+	if (x instanceof List || x instanceof Deque) {
2070	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2071	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2072	+	y.toArray(new Object[0])));
2073	+	}
2074	+	}
2075	+
2076	+	/**
2077	+	* A weaker form of assertCollectionsEquals which does not insist
2078	+	* that the two collections satisfy Object#equals(Object), since
2079	+	* they may use identity semantics as Deques do.
2080	+	*/
2081	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2082	+	if (x instanceof List || x instanceof Set)
2083	+	assertCollectionsEquals(x, y);
2084	+	else {
2085	+	assertEquals(x.isEmpty(), y.isEmpty());
2086	+	assertEquals(x.size(), y.size());
2087	+	assertEquals(new HashSet(x), new HashSet(y));
2088	+	if (x instanceof Deque) {
2089	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2090	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2091	+	y.toArray(new Object[0])));
2092	+	}
2093	+	}
2094	+	}
2095		}

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