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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.68 by jsr166, Sun Oct 31 18:33:47 2010 UTC vs.
Revision 1.220 by jsr166, Sat Mar 11 17:33:32 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
4	>	* http://creativecommons.org/publicdomain/zero/1.0/
5		* Other contributors include Andrew Wright, Jeffrey Hayes,
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.PropertyPermission;
11	<	import java.util.concurrent.*;
12	<	import java.util.concurrent.atomic.AtomicReference;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.base/java.lang:open
23	>	*          java.management
24	>	* @run junit/othervm/timeout=1000
25	>	*      -Djsr166.testImplementationDetails=true
26	>	*      JSR166TestCase
27	>	* @run junit/othervm/timeout=1000
28	>	*      -Djsr166.testImplementationDetails=true
29	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
30	>	*      JSR166TestCase
31	>	* @run junit/othervm/timeout=1000
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	>	*      -Djsr166.testImplementationDetails=true
38	>	*      JSR166TestCase
39	>	*/
40	>
41		import static java.util.concurrent.TimeUnit.MILLISECONDS;
42	+	import static java.util.concurrent.TimeUnit.MINUTES;
43		import static java.util.concurrent.TimeUnit.NANOSECONDS;
44	+
45	+	import java.io.ByteArrayInputStream;
46	+	import java.io.ByteArrayOutputStream;
47	+	import java.io.ObjectInputStream;
48	+	import java.io.ObjectOutputStream;
49	+	import java.lang.management.ManagementFactory;
50	+	import java.lang.management.ThreadInfo;
51	+	import java.lang.management.ThreadMXBean;
52	+	import java.lang.reflect.Constructor;
53	+	import java.lang.reflect.Method;
54	+	import java.lang.reflect.Modifier;
55		import java.security.CodeSource;
56		import java.security.Permission;
57		import java.security.PermissionCollection;
#	Line 19 | Line 59 | import java.security.Permissions;
59		import java.security.Policy;
60		import java.security.ProtectionDomain;
61		import java.security.SecurityPermission;
62	+	import java.util.ArrayList;
63	+	import java.util.Arrays;
64	+	import java.util.Collection;
65	+	import java.util.Collections;
66	+	import java.util.Date;
67	+	import java.util.Enumeration;
68	+	import java.util.Iterator;
69	+	import java.util.List;
70	+	import java.util.NoSuchElementException;
71	+	import java.util.PropertyPermission;
72	+	import java.util.concurrent.BlockingQueue;
73	+	import java.util.concurrent.Callable;
74	+	import java.util.concurrent.CountDownLatch;
75	+	import java.util.concurrent.CyclicBarrier;
76	+	import java.util.concurrent.ExecutionException;
77	+	import java.util.concurrent.Executors;
78	+	import java.util.concurrent.ExecutorService;
79	+	import java.util.concurrent.ForkJoinPool;
80	+	import java.util.concurrent.Future;
81	+	import java.util.concurrent.RecursiveAction;
82	+	import java.util.concurrent.RecursiveTask;
83	+	import java.util.concurrent.RejectedExecutionHandler;
84	+	import java.util.concurrent.Semaphore;
85	+	import java.util.concurrent.SynchronousQueue;
86	+	import java.util.concurrent.ThreadFactory;
87	+	import java.util.concurrent.ThreadLocalRandom;
88	+	import java.util.concurrent.ThreadPoolExecutor;
89	+	import java.util.concurrent.TimeoutException;
90	+	import java.util.concurrent.atomic.AtomicBoolean;
91	+	import java.util.concurrent.atomic.AtomicReference;
92	+	import java.util.regex.Pattern;
93	+
94	+	import junit.framework.AssertionFailedError;
95	+	import junit.framework.Test;
96	+	import junit.framework.TestCase;
97	+	import junit.framework.TestResult;
98	+	import junit.framework.TestSuite;
99
100		/**
101		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 30 | Line 107 | import java.security.SecurityPermission;
107		*
108		* <ol>
109		*
110	<	* <li> All assertions in code running in generated threads must use
110	>	* <li>All assertions in code running in generated threads must use
111		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
112		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
113		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
114		* particularly recommended) for other code to use these forms too.
115		* Only the most typically used JUnit assertion methods are defined
116	<	* this way, but enough to live with.</li>
116	>	* this way, but enough to live with.
117		*
118	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
118	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
119		* to invoke {@code super.setUp} and {@code super.tearDown} within
120		* them. These methods are used to clear and check for thread
121	<	* assertion failures.</li>
121	>	* assertion failures.
122		*
123		* <li>All delays and timeouts must use one of the constants {@code
124		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 52 | Line 129 | import java.security.SecurityPermission;
129		* is always discriminable as larger than SHORT and smaller than
130		* MEDIUM.  And so on. These constants are set to conservative values,
131		* but even so, if there is ever any doubt, they can all be increased
132	<	* in one spot to rerun tests on slower platforms.</li>
132	>	* in one spot to rerun tests on slower platforms.
133		*
134	<	* <li> All threads generated must be joined inside each test case
134	>	* <li>All threads generated must be joined inside each test case
135		* method (or {@code fail} to do so) before returning from the
136		* method. The {@code joinPool} method can be used to do this when
137	<	* using Executors.</li>
137	>	* using Executors.
138		*
139		* </ol>
140		*
141	<	* <p> <b>Other notes</b>
141	>	* <p><b>Other notes</b>
142		* <ul>
143		*
144	<	* <li> Usually, there is one testcase method per JSR166 method
144	>	* <li>Usually, there is one testcase method per JSR166 method
145		* covering "normal" operation, and then as many exception-testing
146		* methods as there are exceptions the method can throw. Sometimes
147		* there are multiple tests per JSR166 method when the different
148		* "normal" behaviors differ significantly. And sometimes testcases
149	<	* cover multiple methods when they cannot be tested in
73	<	* isolation.</li>
149	>	* cover multiple methods when they cannot be tested in isolation.
150		*
151	<	* <li> The documentation style for testcases is to provide as javadoc
151	>	* <li>The documentation style for testcases is to provide as javadoc
152		* a simple sentence or two describing the property that the testcase
153		* method purports to test. The javadocs do not say anything about how
154	<	* the property is tested. To find out, read the code.</li>
154	>	* the property is tested. To find out, read the code.
155		*
156	<	* <li> These tests are "conformance tests", and do not attempt to
156	>	* <li>These tests are "conformance tests", and do not attempt to
157		* test throughput, latency, scalability or other performance factors
158		* (see the separate "jtreg" tests for a set intended to check these
159		* for the most central aspects of functionality.) So, most tests use
160		* the smallest sensible numbers of threads, collection sizes, etc
161	<	* needed to check basic conformance.</li>
161	>	* needed to check basic conformance.
162		*
163		* <li>The test classes currently do not declare inclusion in
164		* any particular package to simplify things for people integrating
165	<	* them in TCK test suites.</li>
165	>	* them in TCK test suites.
166		*
167	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
168	<	* runs all JSR166 unit tests.</li>
167	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
168	>	* runs all JSR166 unit tests.
169		*
170		* </ul>
171		*/
#	Line 101 | Line 177 | public class JSR166TestCase extends Test
177		Boolean.getBoolean("jsr166.expensiveTests");
178
179		/**
180	+	* If true, also run tests that are not part of the official tck
181	+	* because they test unspecified implementation details.
182	+	*/
183	+	protected static final boolean testImplementationDetails =
184	+	Boolean.getBoolean("jsr166.testImplementationDetails");
185	+
186	+	/**
187		* If true, report on stdout all "slow" tests, that is, ones that
188		* take more than profileThreshold milliseconds to execute.
189		*/
#	Line 114 | Line 197 | public class JSR166TestCase extends Test
197		private static final long profileThreshold =
198		Long.getLong("jsr166.profileThreshold", 100);
199
200	+	/**
201	+	* The number of repetitions per test (for tickling rare bugs).
202	+	*/
203	+	private static final int runsPerTest =
204	+	Integer.getInteger("jsr166.runsPerTest", 1);
205	+
206	+	/**
207	+	* The number of repetitions of the test suite (for finding leaks?).
208	+	*/
209	+	private static final int suiteRuns =
210	+	Integer.getInteger("jsr166.suiteRuns", 1);
211	+
212	+	/**
213	+	* Returns the value of the system property, or NaN if not defined.
214	+	*/
215	+	private static float systemPropertyValue(String name) {
216	+	String floatString = System.getProperty(name);
217	+	if (floatString == null)
218	+	return Float.NaN;
219	+	try {
220	+	return Float.parseFloat(floatString);
221	+	} catch (NumberFormatException ex) {
222	+	throw new IllegalArgumentException(
223	+	String.format("Bad float value in system property %s=%s",
224	+	name, floatString));
225	+	}
226	+	}
227	+
228	+	/**
229	+	* The scaling factor to apply to standard delays used in tests.
230	+	* May be initialized from any of:
231	+	* - the "jsr166.delay.factor" system property
232	+	* - the "test.timeout.factor" system property (as used by jtreg)
233	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
234	+	* - hard-coded fuzz factor when using a known slowpoke VM
235	+	*/
236	+	private static final float delayFactor = delayFactor();
237	+
238	+	private static float delayFactor() {
239	+	float x;
240	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
241	+	return x;
242	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
243	+	return x;
244	+	String prop = System.getProperty("java.vm.version");
245	+	if (prop != null && prop.matches(".*debug.*"))
246	+	return 4.0f; // How much slower is fastdebug than product?!
247	+	return 1.0f;
248	+	}
249	+
250	+	public JSR166TestCase() { super(); }
251	+	public JSR166TestCase(String name) { super(name); }
252	+
253	+	/**
254	+	* A filter for tests to run, matching strings of the form
255	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
256	+	* Usefully combined with jsr166.runsPerTest.
257	+	*/
258	+	private static final Pattern methodFilter = methodFilter();
259	+
260	+	private static Pattern methodFilter() {
261	+	String regex = System.getProperty("jsr166.methodFilter");
262	+	return (regex == null) ? null : Pattern.compile(regex);
263	+	}
264	+
265	+	// Instrumentation to debug very rare, but very annoying hung test runs.
266	+	static volatile TestCase currentTestCase;
267	+	// static volatile int currentRun = 0;
268	+	static {
269	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
270	+	// Avoid spurious reports with enormous runsPerTest.
271	+	// A single test case run should never take more than 1 second.
272	+	// But let's cap it at the high end too ...
273	+	final int timeoutMinutes =
274	+	Math.min(15, Math.max(runsPerTest / 60, 1));
275	+	for (TestCase lastTestCase = currentTestCase;;) {
276	+	try { MINUTES.sleep(timeoutMinutes); }
277	+	catch (InterruptedException unexpected) { break; }
278	+	if (lastTestCase == currentTestCase) {
279	+	System.err.printf(
280	+	"Looks like we're stuck running test: %s%n",
281	+	lastTestCase);
282	+	//                     System.err.printf(
283	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
284	+	//                         lastTestCase, currentRun, runsPerTest);
285	+	//                     System.err.println("availableProcessors=" +
286	+	//                         Runtime.getRuntime().availableProcessors());
287	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
288	+	dumpTestThreads();
289	+	// one stack dump is probably enough; more would be spam
290	+	break;
291	+	}
292	+	lastTestCase = currentTestCase;
293	+	}}};
294	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
295	+	thread.setDaemon(true);
296	+	thread.start();
297	+	}
298	+
299	+	//     public static String cpuModel() {
300	+	//         try {
301	+	//             java.util.regex.Matcher matcher
302	+	//               = Pattern.compile("model name\\s*: (.*)")
303	+	//                 .matcher(new String(
304	+	//                     java.nio.file.Files.readAllBytes(
305	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
306	+	//             matcher.find();
307	+	//             return matcher.group(1);
308	+	//         } catch (Exception ex) { return null; }
309	+	//     }
310	+
311	+	public void runBare() throws Throwable {
312	+	currentTestCase = this;
313	+	if (methodFilter == null
314	+	|| methodFilter.matcher(toString()).find())
315	+	super.runBare();
316	+	}
317	+
318		protected void runTest() throws Throwable {
319	<	if (profileTests)
320	<	runTestProfiled();
321	<	else
322	<	super.runTest();
319	>	for (int i = 0; i < runsPerTest; i++) {
320	>	// currentRun = i;
321	>	if (profileTests)
322	>	runTestProfiled();
323	>	else
324	>	super.runTest();
325	>	}
326		}
327
328		protected void runTestProfiled() throws Throwable {
329	<	long t0 = System.nanoTime();
330	<	try {
329	>	for (int i = 0; i < 2; i++) {
330	>	long startTime = System.nanoTime();
331		super.runTest();
332	<	} finally {
333	<	long elapsedMillis =
334	<	(System.nanoTime() - t0) / (1000L * 1000L);
335	<	if (elapsedMillis >= profileThreshold)
332	>	long elapsedMillis = millisElapsedSince(startTime);
333	>	if (elapsedMillis < profileThreshold)
334	>	break;
335	>	// Never report first run of any test; treat it as a
336	>	// warmup run, notably to trigger all needed classloading,
337	>	if (i > 0)
338		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
339		}
340		}
341
342		/**
343	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
343	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
344		*/
345		public static void main(String[] args) {
346	+	main(suite(), args);
347	+	}
348	+
349	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
350	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
351	+	long runTime;
352	+	public void startTest(Test test) {}
353	+	protected void printHeader(long runTime) {
354	+	this.runTime = runTime; // defer printing for later
355	+	}
356	+	protected void printFooter(TestResult result) {
357	+	if (result.wasSuccessful()) {
358	+	getWriter().println("OK (" + result.runCount() + " tests)"
359	+	+ "  Time: " + elapsedTimeAsString(runTime));
360	+	} else {
361	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
362	+	super.printFooter(result);
363	+	}
364	+	}
365	+	}
366	+
367	+	/**
368	+	* Returns a TestRunner that doesn't bother with unnecessary
369	+	* fluff, like printing a "." for each test case.
370	+	*/
371	+	static junit.textui.TestRunner newPithyTestRunner() {
372	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
373	+	runner.setPrinter(new PithyResultPrinter(System.out));
374	+	return runner;
375	+	}
376	+
377	+	/**
378	+	* Runs all unit tests in the given test suite.
379	+	* Actual behavior influenced by jsr166.* system properties.
380	+	*/
381	+	static void main(Test suite, String[] args) {
382		if (useSecurityManager) {
383		System.err.println("Setting a permissive security manager");
384		Policy.setPolicy(permissivePolicy());
385		System.setSecurityManager(new SecurityManager());
386		}
387	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
388	<
389	<	Test s = suite();
390	<	for (int i = 0; i < iters; ++i) {
149	<	junit.textui.TestRunner.run(s);
387	>	for (int i = 0; i < suiteRuns; i++) {
388	>	TestResult result = newPithyTestRunner().doRun(suite);
389	>	if (!result.wasSuccessful())
390	>	System.exit(1);
391		System.gc();
392		System.runFinalization();
393		}
153	–	System.exit(0);
394		}
395
396		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 166 | Line 406 | public class JSR166TestCase extends Test
406		return suite;
407		}
408
409	+	public static void addNamedTestClasses(TestSuite suite,
410	+	String... testClassNames) {
411	+	for (String testClassName : testClassNames) {
412	+	try {
413	+	Class<?> testClass = Class.forName(testClassName);
414	+	Method m = testClass.getDeclaredMethod("suite",
415	+	new Class<?>[0]);
416	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
417	+	} catch (Exception e) {
418	+	throw new Error("Missing test class", e);
419	+	}
420	+	}
421	+	}
422	+
423	+	public static final double JAVA_CLASS_VERSION;
424	+	public static final String JAVA_SPECIFICATION_VERSION;
425	+	static {
426	+	try {
427	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
428	+	new java.security.PrivilegedAction<Double>() {
429	+	public Double run() {
430	+	return Double.valueOf(System.getProperty("java.class.version"));}});
431	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
432	+	new java.security.PrivilegedAction<String>() {
433	+	public String run() {
434	+	return System.getProperty("java.specification.version");}});
435	+	} catch (Throwable t) {
436	+	throw new Error(t);
437	+	}
438	+	}
439	+
440	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
441	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
442	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
443	+	public static boolean atLeastJava9() {
444	+	return JAVA_CLASS_VERSION >= 53.0
445	+	// As of 2015-09, java9 still uses 52.0 class file version
446	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
447	+	}
448	+	public static boolean atLeastJava10() {
449	+	return JAVA_CLASS_VERSION >= 54.0
450	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
451	+	}
452	+
453		/**
454		* Collects all JSR166 unit tests as one suite.
455		*/
456		public static Test suite() {
457	<	return newTestSuite(
457	>	// Java7+ test classes
458	>	TestSuite suite = newTestSuite(
459		ForkJoinPoolTest.suite(),
460		ForkJoinTaskTest.suite(),
461		RecursiveActionTest.suite(),
#	Line 184 | Line 469 | public class JSR166TestCase extends Test
469		AbstractQueuedLongSynchronizerTest.suite(),
470		ArrayBlockingQueueTest.suite(),
471		ArrayDequeTest.suite(),
472	+	ArrayListTest.suite(),
473		AtomicBooleanTest.suite(),
474		AtomicIntegerArrayTest.suite(),
475		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 206 | Line 492 | public class JSR166TestCase extends Test
492		CopyOnWriteArrayListTest.suite(),
493		CopyOnWriteArraySetTest.suite(),
494		CountDownLatchTest.suite(),
495	+	CountedCompleterTest.suite(),
496		CyclicBarrierTest.suite(),
497		DelayQueueTest.suite(),
498		EntryTest.suite(),
#	Line 234 | Line 521 | public class JSR166TestCase extends Test
521		TreeMapTest.suite(),
522		TreeSetTest.suite(),
523		TreeSubMapTest.suite(),
524	<	TreeSubSetTest.suite());
524	>	TreeSubSetTest.suite(),
525	>	VectorTest.suite());
526	>
527	>	// Java8+ test classes
528	>	if (atLeastJava8()) {
529	>	String[] java8TestClassNames = {
530	>	"ArrayDeque8Test",
531	>	"Atomic8Test",
532	>	"CompletableFutureTest",
533	>	"ConcurrentHashMap8Test",
534	>	"CountedCompleter8Test",
535	>	"DoubleAccumulatorTest",
536	>	"DoubleAdderTest",
537	>	"ForkJoinPool8Test",
538	>	"ForkJoinTask8Test",
539	>	"LinkedBlockingDeque8Test",
540	>	"LinkedBlockingQueue8Test",
541	>	"LongAccumulatorTest",
542	>	"LongAdderTest",
543	>	"SplittableRandomTest",
544	>	"StampedLockTest",
545	>	"SubmissionPublisherTest",
546	>	"ThreadLocalRandom8Test",
547	>	"TimeUnit8Test",
548	>	};
549	>	addNamedTestClasses(suite, java8TestClassNames);
550	>	}
551	>
552	>	// Java9+ test classes
553	>	if (atLeastJava9()) {
554	>	String[] java9TestClassNames = {
555	>	"AtomicBoolean9Test",
556	>	"AtomicInteger9Test",
557	>	"AtomicIntegerArray9Test",
558	>	"AtomicLong9Test",
559	>	"AtomicLongArray9Test",
560	>	"AtomicReference9Test",
561	>	"AtomicReferenceArray9Test",
562	>	"ExecutorCompletionService9Test",
563	>	"ForkJoinPool9Test",
564	>	};
565	>	addNamedTestClasses(suite, java9TestClassNames);
566	>	}
567	>
568	>	return suite;
569	>	}
570	>
571	>	/** Returns list of junit-style test method names in given class. */
572	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
573	>	Method[] methods = testClass.getDeclaredMethods();
574	>	ArrayList<String> names = new ArrayList<>(methods.length);
575	>	for (Method method : methods) {
576	>	if (method.getName().startsWith("test")
577	>	&& Modifier.isPublic(method.getModifiers())
578	>	// method.getParameterCount() requires jdk8+
579	>	&& method.getParameterTypes().length == 0) {
580	>	names.add(method.getName());
581	>	}
582	>	}
583	>	return names;
584	>	}
585	>
586	>	/**
587	>	* Returns junit-style testSuite for the given test class, but
588	>	* parameterized by passing extra data to each test.
589	>	*/
590	>	public static <ExtraData> Test parameterizedTestSuite
591	>	(Class<? extends JSR166TestCase> testClass,
592	>	Class<ExtraData> dataClass,
593	>	ExtraData data) {
594	>	try {
595	>	TestSuite suite = new TestSuite();
596	>	Constructor c =
597	>	testClass.getDeclaredConstructor(dataClass, String.class);
598	>	for (String methodName : testMethodNames(testClass))
599	>	suite.addTest((Test) c.newInstance(data, methodName));
600	>	return suite;
601	>	} catch (Exception e) {
602	>	throw new Error(e);
603	>	}
604	>	}
605	>
606	>	/**
607	>	* Returns junit-style testSuite for the jdk8 extension of the
608	>	* given test class, but parameterized by passing extra data to
609	>	* each test.  Uses reflection to allow compilation in jdk7.
610	>	*/
611	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
612	>	(Class<? extends JSR166TestCase> testClass,
613	>	Class<ExtraData> dataClass,
614	>	ExtraData data) {
615	>	if (atLeastJava8()) {
616	>	String name = testClass.getName();
617	>	String name8 = name.replaceAll("Test$", "8Test");
618	>	if (name.equals(name8)) throw new Error(name);
619	>	try {
620	>	return (Test)
621	>	Class.forName(name8)
622	>	.getMethod("testSuite", new Class[] { dataClass })
623	>	.invoke(null, data);
624	>	} catch (Exception e) {
625	>	throw new Error(e);
626	>	}
627	>	} else {
628	>	return new TestSuite();
629	>	}
630		}
631
632	+	// Delays for timing-dependent tests, in milliseconds.
633
634		public static long SHORT_DELAY_MS;
635		public static long SMALL_DELAY_MS;
636		public static long MEDIUM_DELAY_MS;
637		public static long LONG_DELAY_MS;
638
246	–
639		/**
640	<	* Returns the shortest timed delay. This could
641	<	* be reimplemented to use for example a Property.
640	>	* Returns the shortest timed delay. This can be scaled up for
641	>	* slow machines using the jsr166.delay.factor system property,
642	>	* or via jtreg's -timeoutFactor: flag.
643	>	* http://openjdk.java.net/jtreg/command-help.html
644		*/
645		protected long getShortDelay() {
646	<	return 50;
646	>	return (long) (50 * delayFactor);
647		}
648
255	–
649		/**
650		* Sets delays as multiples of SHORT_DELAY.
651		*/
#	Line 260 | Line 653 | public class JSR166TestCase extends Test
653		SHORT_DELAY_MS = getShortDelay();
654		SMALL_DELAY_MS  = SHORT_DELAY_MS * 5;
655		MEDIUM_DELAY_MS = SHORT_DELAY_MS * 10;
656	<	LONG_DELAY_MS   = SHORT_DELAY_MS * 50;
656	>	LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
657	>	}
658	>
659	>	/**
660	>	* Returns a timeout in milliseconds to be used in tests that
661	>	* verify that operations block or time out.
662	>	*/
663	>	long timeoutMillis() {
664	>	return SHORT_DELAY_MS / 4;
665	>	}
666	>
667	>	/**
668	>	* Returns a new Date instance representing a time at least
669	>	* delayMillis milliseconds in the future.
670	>	*/
671	>	Date delayedDate(long delayMillis) {
672	>	// Add 1 because currentTimeMillis is known to round into the past.
673	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
674		}
675
676		/**
677		* The first exception encountered if any threadAssertXXX method fails.
678		*/
679		private final AtomicReference<Throwable> threadFailure
680	<	= new AtomicReference<Throwable>(null);
680	>	= new AtomicReference<>(null);
681
682		/**
683		* Records an exception so that it can be rethrown later in the test
#	Line 276 | Line 686 | public class JSR166TestCase extends Test
686		* the same test have no effect.
687		*/
688		public void threadRecordFailure(Throwable t) {
689	+	System.err.println(t);
690	+	dumpTestThreads();
691		threadFailure.compareAndSet(null, t);
692		}
693
#	Line 283 | Line 695 | public class JSR166TestCase extends Test
695		setDelays();
696		}
697
698	+	void tearDownFail(String format, Object... args) {
699	+	String msg = toString() + ": " + String.format(format, args);
700	+	System.err.println(msg);
701	+	dumpTestThreads();
702	+	throw new AssertionFailedError(msg);
703	+	}
704	+
705		/**
706	+	* Extra checks that get done for all test cases.
707	+	*
708		* Triggers test case failure if any thread assertions have failed,
709		* by rethrowing, in the test harness thread, any exception recorded
710		* earlier by threadRecordFailure.
711	+	*
712	+	* Triggers test case failure if interrupt status is set in the main thread.
713		*/
714		public void tearDown() throws Exception {
715	<	Throwable t = threadFailure.get();
715	>	Throwable t = threadFailure.getAndSet(null);
716		if (t != null) {
717		if (t instanceof Error)
718		throw (Error) t;
#	Line 304 | Line 727 | public class JSR166TestCase extends Test
727		throw afe;
728		}
729		}
730	+
731	+	if (Thread.interrupted())
732	+	tearDownFail("interrupt status set in main thread");
733	+
734	+	checkForkJoinPoolThreadLeaks();
735	+	}
736	+
737	+	/**
738	+	* Finds missing PoolCleaners
739	+	*/
740	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
741	+	Thread[] survivors = new Thread[7];
742	+	int count = Thread.enumerate(survivors);
743	+	for (int i = 0; i < count; i++) {
744	+	Thread thread = survivors[i];
745	+	String name = thread.getName();
746	+	if (name.startsWith("ForkJoinPool-")) {
747	+	// give thread some time to terminate
748	+	thread.join(LONG_DELAY_MS);
749	+	if (thread.isAlive())
750	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
751	+	thread);
752	+	}
753	+	}
754	+
755	+	if (!ForkJoinPool.commonPool()
756	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
757	+	tearDownFail("ForkJoin common pool thread stuck");
758		}
759
760		/**
#	Line 316 | Line 767 | public class JSR166TestCase extends Test
767		fail(reason);
768		} catch (AssertionFailedError t) {
769		threadRecordFailure(t);
770	<	fail(reason);
770	>	throw t;
771		}
772		}
773
#	Line 384 | Line 835 | public class JSR166TestCase extends Test
835		public void threadAssertEquals(Object x, Object y) {
836		try {
837		assertEquals(x, y);
838	<	} catch (AssertionFailedError t) {
839	<	threadRecordFailure(t);
840	<	throw t;
841	<	} catch (Throwable t) {
842	<	threadUnexpectedException(t);
838	>	} catch (AssertionFailedError fail) {
839	>	threadRecordFailure(fail);
840	>	throw fail;
841	>	} catch (Throwable fail) {
842	>	threadUnexpectedException(fail);
843		}
844		}
845
#	Line 400 | Line 851 | public class JSR166TestCase extends Test
851		public void threadAssertSame(Object x, Object y) {
852		try {
853		assertSame(x, y);
854	<	} catch (AssertionFailedError t) {
855	<	threadRecordFailure(t);
856	<	throw t;
854	>	} catch (AssertionFailedError fail) {
855	>	threadRecordFailure(fail);
856	>	throw fail;
857		}
858		}
859
#	Line 435 | Line 886 | public class JSR166TestCase extends Test
886		else {
887		AssertionFailedError afe =
888		new AssertionFailedError("unexpected exception: " + t);
889	<	t.initCause(t);
889	>	afe.initCause(t);
890		throw afe;
891		}
892		}
893
894		/**
895	+	* Delays, via Thread.sleep, for the given millisecond delay, but
896	+	* if the sleep is shorter than specified, may re-sleep or yield
897	+	* until time elapses.  Ensures that the given time, as measured
898	+	* by System.nanoTime(), has elapsed.
899	+	*/
900	+	static void delay(long millis) throws InterruptedException {
901	+	long nanos = millis * (1000 * 1000);
902	+	final long wakeupTime = System.nanoTime() + nanos;
903	+	do {
904	+	if (millis > 0L)
905	+	Thread.sleep(millis);
906	+	else // too short to sleep
907	+	Thread.yield();
908	+	nanos = wakeupTime - System.nanoTime();
909	+	millis = nanos / (1000 * 1000);
910	+	} while (nanos >= 0L);
911	+	}
912	+
913	+	/**
914	+	* Allows use of try-with-resources with per-test thread pools.
915	+	*/
916	+	class PoolCleaner implements AutoCloseable {
917	+	private final ExecutorService pool;
918	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
919	+	public void close() { joinPool(pool); }
920	+	}
921	+
922	+	/**
923	+	* An extension of PoolCleaner that has an action to release the pool.
924	+	*/
925	+	class PoolCleanerWithReleaser extends PoolCleaner {
926	+	private final Runnable releaser;
927	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
928	+	super(pool);
929	+	this.releaser = releaser;
930	+	}
931	+	public void close() {
932	+	try {
933	+	releaser.run();
934	+	} finally {
935	+	super.close();
936	+	}
937	+	}
938	+	}
939	+
940	+	PoolCleaner cleaner(ExecutorService pool) {
941	+	return new PoolCleaner(pool);
942	+	}
943	+
944	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
945	+	return new PoolCleanerWithReleaser(pool, releaser);
946	+	}
947	+
948	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
949	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
950	+	}
951	+
952	+	Runnable releaser(final CountDownLatch latch) {
953	+	return new Runnable() { public void run() {
954	+	do { latch.countDown(); }
955	+	while (latch.getCount() > 0);
956	+	}};
957	+	}
958	+
959	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
960	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
961	+	}
962	+
963	+	Runnable releaser(final AtomicBoolean flag) {
964	+	return new Runnable() { public void run() { flag.set(true); }};
965	+	}
966	+
967	+	/**
968		* Waits out termination of a thread pool or fails doing so.
969		*/
970	<	public void joinPool(ExecutorService exec) {
970	>	void joinPool(ExecutorService pool) {
971		try {
972	<	exec.shutdown();
973	<	assertTrue("ExecutorService did not terminate in a timely manner",
974	<	exec.awaitTermination(LONG_DELAY_MS, MILLISECONDS));
972	>	pool.shutdown();
973	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
974	>	try {
975	>	threadFail("ExecutorService " + pool +
976	>	" did not terminate in a timely manner");
977	>	} finally {
978	>	// last resort, for the benefit of subsequent tests
979	>	pool.shutdownNow();
980	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
981	>	}
982	>	}
983		} catch (SecurityException ok) {
984		// Allowed in case test doesn't have privs
985	<	} catch (InterruptedException ie) {
986	<	fail("Unexpected InterruptedException");
985	>	} catch (InterruptedException fail) {
986	>	threadFail("Unexpected InterruptedException");
987		}
988		}
989
990	+	/**
991	+	* Like Runnable, but with the freedom to throw anything.
992	+	* junit folks had the same idea:
993	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
994	+	*/
995	+	interface Action { public void run() throws Throwable; }
996	+
997	+	/**
998	+	* Runs all the given actions in parallel, failing if any fail.
999	+	* Useful for running multiple variants of tests that are
1000	+	* necessarily individually slow because they must block.
1001	+	*/
1002	+	void testInParallel(Action ... actions) {
1003	+	ExecutorService pool = Executors.newCachedThreadPool();
1004	+	try (PoolCleaner cleaner = cleaner(pool)) {
1005	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1006	+	for (final Action action : actions)
1007	+	futures.add(pool.submit(new CheckedRunnable() {
1008	+	public void realRun() throws Throwable { action.run();}}));
1009	+	for (Future<?> future : futures)
1010	+	try {
1011	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1012	+	} catch (ExecutionException ex) {
1013	+	threadUnexpectedException(ex.getCause());
1014	+	} catch (Exception ex) {
1015	+	threadUnexpectedException(ex);
1016	+	}
1017	+	}
1018	+	}
1019	+
1020	+	/**
1021	+	* A debugging tool to print stack traces of most threads, as jstack does.
1022	+	* Uninteresting threads are filtered out.
1023	+	*/
1024	+	static void dumpTestThreads() {
1025	+	SecurityManager sm = System.getSecurityManager();
1026	+	if (sm != null) {
1027	+	try {
1028	+	System.setSecurityManager(null);
1029	+	} catch (SecurityException giveUp) {
1030	+	return;
1031	+	}
1032	+	}
1033	+
1034	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1035	+	System.err.println("------ stacktrace dump start ------");
1036	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1037	+	final String name = info.getThreadName();
1038	+	String lockName;
1039	+	if ("Signal Dispatcher".equals(name))
1040	+	continue;
1041	+	if ("Reference Handler".equals(name)
1042	+	&& (lockName = info.getLockName()) != null
1043	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1044	+	continue;
1045	+	if ("Finalizer".equals(name)
1046	+	&& (lockName = info.getLockName()) != null
1047	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1048	+	continue;
1049	+	if ("checkForWedgedTest".equals(name))
1050	+	continue;
1051	+	System.err.print(info);
1052	+	}
1053	+	System.err.println("------ stacktrace dump end ------");
1054	+
1055	+	if (sm != null) System.setSecurityManager(sm);
1056	+	}
1057	+
1058	+	/**
1059	+	* Checks that thread does not terminate within the default
1060	+	* millisecond delay of {@code timeoutMillis()}.
1061	+	*/
1062	+	void assertThreadStaysAlive(Thread thread) {
1063	+	assertThreadStaysAlive(thread, timeoutMillis());
1064	+	}
1065	+
1066	+	/**
1067	+	* Checks that thread does not terminate within the given millisecond delay.
1068	+	*/
1069	+	void assertThreadStaysAlive(Thread thread, long millis) {
1070	+	try {
1071	+	// No need to optimize the failing case via Thread.join.
1072	+	delay(millis);
1073	+	assertTrue(thread.isAlive());
1074	+	} catch (InterruptedException fail) {
1075	+	threadFail("Unexpected InterruptedException");
1076	+	}
1077	+	}
1078	+
1079	+	/**
1080	+	* Checks that the threads do not terminate within the default
1081	+	* millisecond delay of {@code timeoutMillis()}.
1082	+	*/
1083	+	void assertThreadsStayAlive(Thread... threads) {
1084	+	assertThreadsStayAlive(timeoutMillis(), threads);
1085	+	}
1086	+
1087	+	/**
1088	+	* Checks that the threads do not terminate within the given millisecond delay.
1089	+	*/
1090	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1091	+	try {
1092	+	// No need to optimize the failing case via Thread.join.
1093	+	delay(millis);
1094	+	for (Thread thread : threads)
1095	+	assertTrue(thread.isAlive());
1096	+	} catch (InterruptedException fail) {
1097	+	threadFail("Unexpected InterruptedException");
1098	+	}
1099	+	}
1100	+
1101	+	/**
1102	+	* Checks that future.get times out, with the default timeout of
1103	+	* {@code timeoutMillis()}.
1104	+	*/
1105	+	void assertFutureTimesOut(Future future) {
1106	+	assertFutureTimesOut(future, timeoutMillis());
1107	+	}
1108	+
1109	+	/**
1110	+	* Checks that future.get times out, with the given millisecond timeout.
1111	+	*/
1112	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1113	+	long startTime = System.nanoTime();
1114	+	try {
1115	+	future.get(timeoutMillis, MILLISECONDS);
1116	+	shouldThrow();
1117	+	} catch (TimeoutException success) {
1118	+	} catch (Exception fail) {
1119	+	threadUnexpectedException(fail);
1120	+	} finally { future.cancel(true); }
1121	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1122	+	}
1123
1124		/**
1125		* Fails with message "should throw exception".
#	Line 495 | Line 1160 | public class JSR166TestCase extends Test
1160		public static final Integer m6  = new Integer(-6);
1161		public static final Integer m10 = new Integer(-10);
1162
498	–
1163		/**
1164		* Runs Runnable r with a security policy that permits precisely
1165		* the specified permissions.  If there is no current security
#	Line 507 | Line 1171 | public class JSR166TestCase extends Test
1171		SecurityManager sm = System.getSecurityManager();
1172		if (sm == null) {
1173		r.run();
1174	+	}
1175	+	runWithSecurityManagerWithPermissions(r, permissions);
1176	+	}
1177	+
1178	+	/**
1179	+	* Runs Runnable r with a security policy that permits precisely
1180	+	* the specified permissions.  If there is no current security
1181	+	* manager, a temporary one is set for the duration of the
1182	+	* Runnable.  We require that any security manager permit
1183	+	* getPolicy/setPolicy.
1184	+	*/
1185	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1186	+	Permission... permissions) {
1187	+	SecurityManager sm = System.getSecurityManager();
1188	+	if (sm == null) {
1189		Policy savedPolicy = Policy.getPolicy();
1190		try {
1191		Policy.setPolicy(permissivePolicy());
1192		System.setSecurityManager(new SecurityManager());
1193	<	runWithPermissions(r, permissions);
1193	>	runWithSecurityManagerWithPermissions(r, permissions);
1194		} finally {
1195		System.setSecurityManager(null);
1196		Policy.setPolicy(savedPolicy);
#	Line 559 | Line 1238 | public class JSR166TestCase extends Test
1238		return perms.implies(p);
1239		}
1240		public void refresh() {}
1241	+	public String toString() {
1242	+	List<Permission> ps = new ArrayList<>();
1243	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1244	+	ps.add(e.nextElement());
1245	+	return "AdjustablePolicy with permissions " + ps;
1246	+	}
1247		}
1248
1249		/**
#	Line 584 | Line 1269 | public class JSR166TestCase extends Test
1269		* Sleeps until the given time has elapsed.
1270		* Throws AssertionFailedError if interrupted.
1271		*/
1272	<	void sleep(long millis) {
1272	>	static void sleep(long millis) {
1273		try {
1274	<	Thread.sleep(millis);
1275	<	} catch (InterruptedException ie) {
1274	>	delay(millis);
1275	>	} catch (InterruptedException fail) {
1276		AssertionFailedError afe =
1277		new AssertionFailedError("Unexpected InterruptedException");
1278	<	afe.initCause(ie);
1278	>	afe.initCause(fail);
1279		throw afe;
1280		}
1281		}
1282
1283		/**
1284	<	* Sleeps until the timeout has elapsed, or interrupted.
600	<	* Does <em>NOT</em> throw InterruptedException.
601	<	*/
602	<	void sleepTillInterrupted(long timeoutMillis) {
603	<	try {
604	<	Thread.sleep(timeoutMillis);
605	<	} catch (InterruptedException wakeup) {}
606	<	}
607	<
608	<	/**
609	<	* Waits up to the specified number of milliseconds for the given
1284	>	* Spin-waits up to the specified number of milliseconds for the given
1285		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1286		*/
1287		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1288	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
614	<	long t0 = System.nanoTime();
1288	>	long startTime = 0L;
1289		for (;;) {
1290		Thread.State s = thread.getState();
1291		if (s == Thread.State.BLOCKED ||
#	Line 620 | Line 1294 | public class JSR166TestCase extends Test
1294		return;
1295		else if (s == Thread.State.TERMINATED)
1296		fail("Unexpected thread termination");
1297	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1297	>	else if (startTime == 0L)
1298	>	startTime = System.nanoTime();
1299	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1300		threadAssertTrue(thread.isAlive());
1301	<	return;
1301	>	fail("timed out waiting for thread to enter wait state");
1302	>	}
1303	>	Thread.yield();
1304	>	}
1305	>	}
1306	>
1307	>	/**
1308	>	* Spin-waits up to the specified number of milliseconds for the given
1309	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1310	>	* and additionally satisfy the given condition.
1311	>	*/
1312	>	void waitForThreadToEnterWaitState(
1313	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1314	>	long startTime = 0L;
1315	>	for (;;) {
1316	>	Thread.State s = thread.getState();
1317	>	if (s == Thread.State.BLOCKED ||
1318	>	s == Thread.State.WAITING ||
1319	>	s == Thread.State.TIMED_WAITING) {
1320	>	try {
1321	>	if (waitingForGodot.call())
1322	>	return;
1323	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1324	>	}
1325	>	else if (s == Thread.State.TERMINATED)
1326	>	fail("Unexpected thread termination");
1327	>	else if (startTime == 0L)
1328	>	startTime = System.nanoTime();
1329	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1330	>	threadAssertTrue(thread.isAlive());
1331	>	fail("timed out waiting for thread to enter wait state");
1332		}
1333		Thread.yield();
1334		}
1335		}
1336
1337		/**
1338	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1339	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1340	+	*/
1341	+	void waitForThreadToEnterWaitState(Thread thread) {
1342	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1343	+	}
1344	+
1345	+	/**
1346	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1347	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1348	+	* and additionally satisfy the given condition.
1349	+	*/
1350	+	void waitForThreadToEnterWaitState(
1351	+	Thread thread, Callable<Boolean> waitingForGodot) {
1352	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1353	+	}
1354	+
1355	+	/**
1356		* Returns the number of milliseconds since time given by
1357		* startNanoTime, which must have been previously returned from a
1358	<	* call to {@link System.nanoTime()}.
1358	>	* call to {@link System#nanoTime()}.
1359		*/
1360	<	long millisElapsedSince(long startNanoTime) {
1360	>	static long millisElapsedSince(long startNanoTime) {
1361		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1362		}
1363
1364	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1365	+	//         long startTime = System.nanoTime();
1366	+	//         try {
1367	+	//             r.run();
1368	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1369	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1370	+	//             throw new AssertionFailedError("did not return promptly");
1371	+	//     }
1372	+
1373	+	//     void assertTerminatesPromptly(Runnable r) {
1374	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1375	+	//     }
1376	+
1377	+	/**
1378	+	* Checks that timed f.get() returns the expected value, and does not
1379	+	* wait for the timeout to elapse before returning.
1380	+	*/
1381	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1382	+	long startTime = System.nanoTime();
1383	+	try {
1384	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1385	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1386	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1387	+	throw new AssertionFailedError("timed get did not return promptly");
1388	+	}
1389	+
1390	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1391	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1392	+	}
1393	+
1394		/**
1395		* Returns a new started daemon Thread running the given runnable.
1396		*/
#	Line 655 | Line 1409 | public class JSR166TestCase extends Test
1409		void awaitTermination(Thread t, long timeoutMillis) {
1410		try {
1411		t.join(timeoutMillis);
1412	<	} catch (InterruptedException ie) {
1413	<	threadUnexpectedException(ie);
1412	>	} catch (InterruptedException fail) {
1413	>	threadUnexpectedException(fail);
1414		} finally {
1415	<	if (t.isAlive()) {
1415	>	if (t.getState() != Thread.State.TERMINATED) {
1416		t.interrupt();
1417	<	fail("Test timed out");
1417	>	threadFail("timed out waiting for thread to terminate");
1418		}
1419		}
1420		}
1421
1422	+	/**
1423	+	* Waits for LONG_DELAY_MS milliseconds for the thread to
1424	+	* terminate (using {@link Thread#join(long)}), else interrupts
1425	+	* the thread (in the hope that it may terminate later) and fails.
1426	+	*/
1427	+	void awaitTermination(Thread t) {
1428	+	awaitTermination(t, LONG_DELAY_MS);
1429	+	}
1430	+
1431		// Some convenient Runnable classes
1432
1433		public abstract class CheckedRunnable implements Runnable {
#	Line 673 | Line 1436 | public class JSR166TestCase extends Test
1436		public final void run() {
1437		try {
1438		realRun();
1439	<	} catch (Throwable t) {
1440	<	threadUnexpectedException(t);
1439	>	} catch (Throwable fail) {
1440	>	threadUnexpectedException(fail);
1441		}
1442		}
1443		}
#	Line 727 | Line 1490 | public class JSR166TestCase extends Test
1490		realRun();
1491		threadShouldThrow("InterruptedException");
1492		} catch (InterruptedException success) {
1493	<	} catch (Throwable t) {
1494	<	threadUnexpectedException(t);
1493	>	threadAssertFalse(Thread.interrupted());
1494	>	} catch (Throwable fail) {
1495	>	threadUnexpectedException(fail);
1496		}
1497		}
1498		}
#	Line 739 | Line 1503 | public class JSR166TestCase extends Test
1503		public final T call() {
1504		try {
1505		return realCall();
1506	<	} catch (Throwable t) {
1507	<	threadUnexpectedException(t);
1506	>	} catch (Throwable fail) {
1507	>	threadUnexpectedException(fail);
1508		return null;
1509		}
1510		}
#	Line 756 | Line 1520 | public class JSR166TestCase extends Test
1520		threadShouldThrow("InterruptedException");
1521		return result;
1522		} catch (InterruptedException success) {
1523	<	} catch (Throwable t) {
1524	<	threadUnexpectedException(t);
1523	>	threadAssertFalse(Thread.interrupted());
1524	>	} catch (Throwable fail) {
1525	>	threadUnexpectedException(fail);
1526		}
1527		return null;
1528		}
#	Line 774 | Line 1539 | public class JSR166TestCase extends Test
1539		public static final String TEST_STRING = "a test string";
1540
1541		public static class StringTask implements Callable<String> {
1542	<	public String call() { return TEST_STRING; }
1542	>	final String value;
1543	>	public StringTask() { this(TEST_STRING); }
1544	>	public StringTask(String value) { this.value = value; }
1545	>	public String call() { return value; }
1546		}
1547
1548		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 787 | Line 1555 | public class JSR166TestCase extends Test
1555		}};
1556		}
1557
1558	+	public Runnable countDowner(final CountDownLatch latch) {
1559	+	return new CheckedRunnable() {
1560	+	public void realRun() throws InterruptedException {
1561	+	latch.countDown();
1562	+	}};
1563	+	}
1564	+
1565	+	class LatchAwaiter extends CheckedRunnable {
1566	+	static final int NEW = 0;
1567	+	static final int RUNNING = 1;
1568	+	static final int DONE = 2;
1569	+	final CountDownLatch latch;
1570	+	int state = NEW;
1571	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1572	+	public void realRun() throws InterruptedException {
1573	+	state = 1;
1574	+	await(latch);
1575	+	state = 2;
1576	+	}
1577	+	}
1578	+
1579	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1580	+	return new LatchAwaiter(latch);
1581	+	}
1582	+
1583	+	public void await(CountDownLatch latch, long timeoutMillis) {
1584	+	try {
1585	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1586	+	fail("timed out waiting for CountDownLatch for "
1587	+	+ (timeoutMillis/1000) + " sec");
1588	+	} catch (Throwable fail) {
1589	+	threadUnexpectedException(fail);
1590	+	}
1591	+	}
1592	+
1593	+	public void await(CountDownLatch latch) {
1594	+	await(latch, LONG_DELAY_MS);
1595	+	}
1596	+
1597	+	public void await(Semaphore semaphore) {
1598	+	try {
1599	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1600	+	fail("timed out waiting for Semaphore for "
1601	+	+ (LONG_DELAY_MS/1000) + " sec");
1602	+	} catch (Throwable fail) {
1603	+	threadUnexpectedException(fail);
1604	+	}
1605	+	}
1606	+
1607	+	//     /**
1608	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1609	+	//      */
1610	+	//     public void await(AtomicBoolean flag) {
1611	+	//         await(flag, LONG_DELAY_MS);
1612	+	//     }
1613	+
1614	+	//     /**
1615	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1616	+	//      */
1617	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1618	+	//         long startTime = System.nanoTime();
1619	+	//         while (!flag.get()) {
1620	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1621	+	//                 throw new AssertionFailedError("timed out");
1622	+	//             Thread.yield();
1623	+	//         }
1624	+	//     }
1625	+
1626		public static class NPETask implements Callable<String> {
1627		public String call() { throw new NullPointerException(); }
1628		}
#	Line 797 | Line 1633 | public class JSR166TestCase extends Test
1633
1634		public class ShortRunnable extends CheckedRunnable {
1635		protected void realRun() throws Throwable {
1636	<	Thread.sleep(SHORT_DELAY_MS);
1636	>	delay(SHORT_DELAY_MS);
1637		}
1638		}
1639
1640		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1641		protected void realRun() throws InterruptedException {
1642	<	Thread.sleep(SHORT_DELAY_MS);
1642	>	delay(SHORT_DELAY_MS);
1643		}
1644		}
1645
1646		public class SmallRunnable extends CheckedRunnable {
1647		protected void realRun() throws Throwable {
1648	<	Thread.sleep(SMALL_DELAY_MS);
1648	>	delay(SMALL_DELAY_MS);
1649		}
1650		}
1651
1652		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1653		protected void realRun() {
1654		try {
1655	<	Thread.sleep(SMALL_DELAY_MS);
1655	>	delay(SMALL_DELAY_MS);
1656		} catch (InterruptedException ok) {}
1657		}
1658		}
1659
1660		public class SmallCallable extends CheckedCallable {
1661		protected Object realCall() throws InterruptedException {
1662	<	Thread.sleep(SMALL_DELAY_MS);
1662	>	delay(SMALL_DELAY_MS);
1663		return Boolean.TRUE;
1664		}
1665		}
1666
1667		public class MediumRunnable extends CheckedRunnable {
1668		protected void realRun() throws Throwable {
1669	<	Thread.sleep(MEDIUM_DELAY_MS);
1669	>	delay(MEDIUM_DELAY_MS);
1670		}
1671		}
1672
1673		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1674		protected void realRun() throws InterruptedException {
1675	<	Thread.sleep(MEDIUM_DELAY_MS);
1675	>	delay(MEDIUM_DELAY_MS);
1676		}
1677		}
1678
#	Line 844 | Line 1680 | public class JSR166TestCase extends Test
1680		return new CheckedRunnable() {
1681		protected void realRun() {
1682		try {
1683	<	Thread.sleep(timeoutMillis);
1683	>	delay(timeoutMillis);
1684		} catch (InterruptedException ok) {}
1685		}};
1686		}
#	Line 852 | Line 1688 | public class JSR166TestCase extends Test
1688		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1689		protected void realRun() {
1690		try {
1691	<	Thread.sleep(MEDIUM_DELAY_MS);
1691	>	delay(MEDIUM_DELAY_MS);
1692		} catch (InterruptedException ok) {}
1693		}
1694		}
#	Line 860 | Line 1696 | public class JSR166TestCase extends Test
1696		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1697		protected void realRun() {
1698		try {
1699	<	Thread.sleep(LONG_DELAY_MS);
1699	>	delay(LONG_DELAY_MS);
1700		} catch (InterruptedException ok) {}
1701		}
1702		}
#	Line 884 | Line 1720 | public class JSR166TestCase extends Test
1720		public boolean isDone() { return done; }
1721		public void run() {
1722		try {
1723	<	Thread.sleep(timeoutMillis);
1723	>	delay(timeoutMillis);
1724		done = true;
1725		} catch (InterruptedException ok) {}
1726		}
#	Line 895 | Line 1731 | public class JSR166TestCase extends Test
1731		public volatile boolean done = false;
1732		public void run() {
1733		try {
1734	<	Thread.sleep(SHORT_DELAY_MS);
1734	>	delay(SHORT_DELAY_MS);
1735		done = true;
1736		} catch (InterruptedException ok) {}
1737		}
#	Line 905 | Line 1741 | public class JSR166TestCase extends Test
1741		public volatile boolean done = false;
1742		public void run() {
1743		try {
1744	<	Thread.sleep(SMALL_DELAY_MS);
1744	>	delay(SMALL_DELAY_MS);
1745		done = true;
1746		} catch (InterruptedException ok) {}
1747		}
#	Line 915 | Line 1751 | public class JSR166TestCase extends Test
1751		public volatile boolean done = false;
1752		public void run() {
1753		try {
1754	<	Thread.sleep(MEDIUM_DELAY_MS);
1754	>	delay(MEDIUM_DELAY_MS);
1755		done = true;
1756		} catch (InterruptedException ok) {}
1757		}
#	Line 925 | Line 1761 | public class JSR166TestCase extends Test
1761		public volatile boolean done = false;
1762		public void run() {
1763		try {
1764	<	Thread.sleep(LONG_DELAY_MS);
1764	>	delay(LONG_DELAY_MS);
1765		done = true;
1766		} catch (InterruptedException ok) {}
1767		}
#	Line 942 | Line 1778 | public class JSR166TestCase extends Test
1778		public volatile boolean done = false;
1779		public Object call() {
1780		try {
1781	<	Thread.sleep(SMALL_DELAY_MS);
1781	>	delay(SMALL_DELAY_MS);
1782		done = true;
1783		} catch (InterruptedException ok) {}
1784		return Boolean.TRUE;
#	Line 955 | Line 1791 | public class JSR166TestCase extends Test
1791		public abstract class CheckedRecursiveAction extends RecursiveAction {
1792		protected abstract void realCompute() throws Throwable;
1793
1794	<	public final void compute() {
1794	>	@Override protected final void compute() {
1795		try {
1796		realCompute();
1797	<	} catch (Throwable t) {
1798	<	threadUnexpectedException(t);
1797	>	} catch (Throwable fail) {
1798	>	threadUnexpectedException(fail);
1799		}
1800		}
1801		}
#	Line 970 | Line 1806 | public class JSR166TestCase extends Test
1806		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1807		protected abstract T realCompute() throws Throwable;
1808
1809	<	public final T compute() {
1809	>	@Override protected final T compute() {
1810		try {
1811		return realCompute();
1812	<	} catch (Throwable t) {
1813	<	threadUnexpectedException(t);
1812	>	} catch (Throwable fail) {
1813	>	threadUnexpectedException(fail);
1814		return null;
1815		}
1816		}
#	Line 989 | Line 1825 | public class JSR166TestCase extends Test
1825		}
1826
1827		/**
1828	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1829	<	* of throwing checked exceptions.
1828	>	* A CyclicBarrier that uses timed await and fails with
1829	>	* AssertionFailedErrors instead of throwing checked exceptions.
1830		*/
1831	<	public class CheckedBarrier extends CyclicBarrier {
1831	>	public static class CheckedBarrier extends CyclicBarrier {
1832		public CheckedBarrier(int parties) { super(parties); }
1833
1834		public int await() {
1835		try {
1836	<	return super.await();
1837	<	} catch (Exception e) {
1836	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1837	>	} catch (TimeoutException timedOut) {
1838	>	throw new AssertionFailedError("timed out");
1839	>	} catch (Exception fail) {
1840		AssertionFailedError afe =
1841	<	new AssertionFailedError("Unexpected exception: " + e);
1842	<	afe.initCause(e);
1841	>	new AssertionFailedError("Unexpected exception: " + fail);
1842	>	afe.initCause(fail);
1843		throw afe;
1844		}
1845		}
1846		}
1847
1848	+	void checkEmpty(BlockingQueue q) {
1849	+	try {
1850	+	assertTrue(q.isEmpty());
1851	+	assertEquals(0, q.size());
1852	+	assertNull(q.peek());
1853	+	assertNull(q.poll());
1854	+	assertNull(q.poll(0, MILLISECONDS));
1855	+	assertEquals(q.toString(), "[]");
1856	+	assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1857	+	assertFalse(q.iterator().hasNext());
1858	+	try {
1859	+	q.element();
1860	+	shouldThrow();
1861	+	} catch (NoSuchElementException success) {}
1862	+	try {
1863	+	q.iterator().next();
1864	+	shouldThrow();
1865	+	} catch (NoSuchElementException success) {}
1866	+	try {
1867	+	q.remove();
1868	+	shouldThrow();
1869	+	} catch (NoSuchElementException success) {}
1870	+	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1871	+	}
1872	+
1873	+	void assertSerialEquals(Object x, Object y) {
1874	+	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1875	+	}
1876	+
1877	+	void assertNotSerialEquals(Object x, Object y) {
1878	+	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1879	+	}
1880	+
1881	+	byte[] serialBytes(Object o) {
1882	+	try {
1883	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1884	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1885	+	oos.writeObject(o);
1886	+	oos.flush();
1887	+	oos.close();
1888	+	return bos.toByteArray();
1889	+	} catch (Throwable fail) {
1890	+	threadUnexpectedException(fail);
1891	+	return new byte[0];
1892	+	}
1893	+	}
1894	+
1895	+	void assertImmutable(final Object o) {
1896	+	if (o instanceof Collection) {
1897	+	assertThrows(
1898	+	UnsupportedOperationException.class,
1899	+	new Runnable() { public void run() {
1900	+	((Collection) o).add(null);}});
1901	+	}
1902	+	}
1903	+
1904	+	@SuppressWarnings("unchecked")
1905	+	<T> T serialClone(T o) {
1906	+	try {
1907	+	ObjectInputStream ois = new ObjectInputStream
1908	+	(new ByteArrayInputStream(serialBytes(o)));
1909	+	T clone = (T) ois.readObject();
1910	+	if (o == clone) assertImmutable(o);
1911	+	assertSame(o.getClass(), clone.getClass());
1912	+	return clone;
1913	+	} catch (Throwable fail) {
1914	+	threadUnexpectedException(fail);
1915	+	return null;
1916	+	}
1917	+	}
1918	+
1919	+	/**
1920	+	* A version of serialClone that leaves error handling (for
1921	+	* e.g. NotSerializableException) up to the caller.
1922	+	*/
1923	+	@SuppressWarnings("unchecked")
1924	+	<T> T serialClonePossiblyFailing(T o)
1925	+	throws ReflectiveOperationException, java.io.IOException {
1926	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1927	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1928	+	oos.writeObject(o);
1929	+	oos.flush();
1930	+	oos.close();
1931	+	ObjectInputStream ois = new ObjectInputStream
1932	+	(new ByteArrayInputStream(bos.toByteArray()));
1933	+	T clone = (T) ois.readObject();
1934	+	if (o == clone) assertImmutable(o);
1935	+	assertSame(o.getClass(), clone.getClass());
1936	+	return clone;
1937	+	}
1938	+
1939	+	/**
1940	+	* If o implements Cloneable and has a public clone method,
1941	+	* returns a clone of o, else null.
1942	+	*/
1943	+	@SuppressWarnings("unchecked")
1944	+	<T> T cloneableClone(T o) {
1945	+	if (!(o instanceof Cloneable)) return null;
1946	+	final T clone;
1947	+	try {
1948	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1949	+	} catch (NoSuchMethodException ok) {
1950	+	return null;
1951	+	} catch (ReflectiveOperationException unexpected) {
1952	+	throw new Error(unexpected);
1953	+	}
1954	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1955	+	assertSame(o.getClass(), clone.getClass());
1956	+	return clone;
1957	+	}
1958	+
1959	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1960	+	Runnable... throwingActions) {
1961	+	for (Runnable throwingAction : throwingActions) {
1962	+	boolean threw = false;
1963	+	try { throwingAction.run(); }
1964	+	catch (Throwable t) {
1965	+	threw = true;
1966	+	if (!expectedExceptionClass.isInstance(t)) {
1967	+	AssertionFailedError afe =
1968	+	new AssertionFailedError
1969	+	("Expected " + expectedExceptionClass.getName() +
1970	+	", got " + t.getClass().getName());
1971	+	afe.initCause(t);
1972	+	threadUnexpectedException(afe);
1973	+	}
1974	+	}
1975	+	if (!threw)
1976	+	shouldThrow(expectedExceptionClass.getName());
1977	+	}
1978	+	}
1979	+
1980	+	public void assertIteratorExhausted(Iterator<?> it) {
1981	+	try {
1982	+	it.next();
1983	+	shouldThrow();
1984	+	} catch (NoSuchElementException success) {}
1985	+	assertFalse(it.hasNext());
1986	+	}
1987	+
1988	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1989	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1990	+	}
1991	+
1992	+	public Runnable runnableThrowing(final RuntimeException ex) {
1993	+	return new Runnable() { public void run() { throw ex; }};
1994	+	}
1995	+
1996	+	/** A reusable thread pool to be shared by tests. */
1997	+	static final ExecutorService cachedThreadPool =
1998	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1999	+	1000L, MILLISECONDS,
2000	+	new SynchronousQueue<Runnable>());
2001	+
2002	+	static <T> void shuffle(T[] array) {
2003	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
2004	+	}
2005		}

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