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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.105 by dl, Thu Mar 21 19:06:54 2013 UTC vs.
Revision 1.204 by jsr166, Sat Oct 15 18:51:12 2016 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests
12	>	* @modules java.management
13	>	* @build *
14	>	* @run junit/othervm/timeout=1000 -Djsr166.testImplementationDetails=true JSR166TestCase
15	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=0 -Djsr166.testImplementationDetails=true JSR166TestCase
16	>	* @run junit/othervm/timeout=1000 -Djava.util.concurrent.ForkJoinPool.common.parallelism=1 -Djava.util.secureRandomSeed=true JSR166TestCase
17	>	*/
18	>
19	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
20	>	import static java.util.concurrent.TimeUnit.MINUTES;
21	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
22	>
23		import java.io.ByteArrayInputStream;
24		import java.io.ByteArrayOutputStream;
25		import java.io.ObjectInputStream;
26		import java.io.ObjectOutputStream;
27		import java.lang.management.ManagementFactory;
28		import java.lang.management.ThreadInfo;
29	+	import java.lang.management.ThreadMXBean;
30	+	import java.lang.reflect.Constructor;
31		import java.lang.reflect.Method;
32	+	import java.lang.reflect.Modifier;
33	+	import java.nio.file.Files;
34	+	import java.nio.file.Paths;
35	+	import java.security.CodeSource;
36	+	import java.security.Permission;
37	+	import java.security.PermissionCollection;
38	+	import java.security.Permissions;
39	+	import java.security.Policy;
40	+	import java.security.ProtectionDomain;
41	+	import java.security.SecurityPermission;
42		import java.util.ArrayList;
43		import java.util.Arrays;
44	+	import java.util.Collections;
45		import java.util.Date;
46		import java.util.Enumeration;
47	+	import java.util.Iterator;
48		import java.util.List;
49		import java.util.NoSuchElementException;
50		import java.util.PropertyPermission;
51	<	import java.util.concurrent.*;
51	>	import java.util.concurrent.BlockingQueue;
52	>	import java.util.concurrent.Callable;
53	>	import java.util.concurrent.CountDownLatch;
54	>	import java.util.concurrent.CyclicBarrier;
55	>	import java.util.concurrent.ExecutionException;
56	>	import java.util.concurrent.Executors;
57	>	import java.util.concurrent.ExecutorService;
58	>	import java.util.concurrent.ForkJoinPool;
59	>	import java.util.concurrent.Future;
60	>	import java.util.concurrent.RecursiveAction;
61	>	import java.util.concurrent.RecursiveTask;
62	>	import java.util.concurrent.RejectedExecutionHandler;
63	>	import java.util.concurrent.Semaphore;
64	>	import java.util.concurrent.SynchronousQueue;
65	>	import java.util.concurrent.ThreadFactory;
66	>	import java.util.concurrent.ThreadLocalRandom;
67	>	import java.util.concurrent.ThreadPoolExecutor;
68	>	import java.util.concurrent.TimeoutException;
69		import java.util.concurrent.atomic.AtomicBoolean;
70		import java.util.concurrent.atomic.AtomicReference;
71	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
72	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
73	<	import java.security.CodeSource;
74	<	import java.security.Permission;
75	<	import java.security.PermissionCollection;
76	<	import java.security.Permissions;
77	<	import java.security.Policy;
78	<	import java.security.ProtectionDomain;
35	<	import java.security.SecurityPermission;
71	>	import java.util.regex.Matcher;
72	>	import java.util.regex.Pattern;
73	>
74	>	import junit.framework.AssertionFailedError;
75	>	import junit.framework.Test;
76	>	import junit.framework.TestCase;
77	>	import junit.framework.TestResult;
78	>	import junit.framework.TestSuite;
79
80		/**
81		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 44 | Line 87 | import java.security.SecurityPermission;
87		*
88		* <ol>
89		*
90	<	* <li> All assertions in code running in generated threads must use
90	>	* <li>All assertions in code running in generated threads must use
91		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
92		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
93		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
94		* particularly recommended) for other code to use these forms too.
95		* Only the most typically used JUnit assertion methods are defined
96	<	* this way, but enough to live with.</li>
96	>	* this way, but enough to live with.
97		*
98	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
98	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
99		* to invoke {@code super.setUp} and {@code super.tearDown} within
100		* them. These methods are used to clear and check for thread
101	<	* assertion failures.</li>
101	>	* assertion failures.
102		*
103		* <li>All delays and timeouts must use one of the constants {@code
104		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 66 | Line 109 | import java.security.SecurityPermission;
109		* is always discriminable as larger than SHORT and smaller than
110		* MEDIUM.  And so on. These constants are set to conservative values,
111		* but even so, if there is ever any doubt, they can all be increased
112	<	* in one spot to rerun tests on slower platforms.</li>
112	>	* in one spot to rerun tests on slower platforms.
113		*
114	<	* <li> All threads generated must be joined inside each test case
114	>	* <li>All threads generated must be joined inside each test case
115		* method (or {@code fail} to do so) before returning from the
116		* method. The {@code joinPool} method can be used to do this when
117	<	* using Executors.</li>
117	>	* using Executors.
118		*
119		* </ol>
120		*
121		* <p><b>Other notes</b>
122		* <ul>
123		*
124	<	* <li> Usually, there is one testcase method per JSR166 method
124	>	* <li>Usually, there is one testcase method per JSR166 method
125		* covering "normal" operation, and then as many exception-testing
126		* methods as there are exceptions the method can throw. Sometimes
127		* there are multiple tests per JSR166 method when the different
128		* "normal" behaviors differ significantly. And sometimes testcases
129	<	* cover multiple methods when they cannot be tested in
87	<	* isolation.</li>
129	>	* cover multiple methods when they cannot be tested in isolation.
130		*
131	<	* <li> The documentation style for testcases is to provide as javadoc
131	>	* <li>The documentation style for testcases is to provide as javadoc
132		* a simple sentence or two describing the property that the testcase
133		* method purports to test. The javadocs do not say anything about how
134	<	* the property is tested. To find out, read the code.</li>
134	>	* the property is tested. To find out, read the code.
135		*
136	<	* <li> These tests are "conformance tests", and do not attempt to
136	>	* <li>These tests are "conformance tests", and do not attempt to
137		* test throughput, latency, scalability or other performance factors
138		* (see the separate "jtreg" tests for a set intended to check these
139		* for the most central aspects of functionality.) So, most tests use
140		* the smallest sensible numbers of threads, collection sizes, etc
141	<	* needed to check basic conformance.</li>
141	>	* needed to check basic conformance.
142		*
143		* <li>The test classes currently do not declare inclusion in
144		* any particular package to simplify things for people integrating
145	<	* them in TCK test suites.</li>
145	>	* them in TCK test suites.
146		*
147	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
148	<	* runs all JSR166 unit tests.</li>
147	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
148	>	* runs all JSR166 unit tests.
149		*
150		* </ul>
151		*/
#	Line 115 | Line 157 | public class JSR166TestCase extends Test
157		Boolean.getBoolean("jsr166.expensiveTests");
158
159		/**
160	+	* If true, also run tests that are not part of the official tck
161	+	* because they test unspecified implementation details.
162	+	*/
163	+	protected static final boolean testImplementationDetails =
164	+	Boolean.getBoolean("jsr166.testImplementationDetails");
165	+
166	+	/**
167		* If true, report on stdout all "slow" tests, that is, ones that
168		* take more than profileThreshold milliseconds to execute.
169		*/
#	Line 128 | Line 177 | public class JSR166TestCase extends Test
177		private static final long profileThreshold =
178		Long.getLong("jsr166.profileThreshold", 100);
179
180	+	/**
181	+	* The number of repetitions per test (for tickling rare bugs).
182	+	*/
183	+	private static final int runsPerTest =
184	+	Integer.getInteger("jsr166.runsPerTest", 1);
185	+
186	+	/**
187	+	* The number of repetitions of the test suite (for finding leaks?).
188	+	*/
189	+	private static final int suiteRuns =
190	+	Integer.getInteger("jsr166.suiteRuns", 1);
191	+
192	+	/**
193	+	* Returns the value of the system property, or NaN if not defined.
194	+	*/
195	+	private static float systemPropertyValue(String name) {
196	+	String floatString = System.getProperty(name);
197	+	if (floatString == null)
198	+	return Float.NaN;
199	+	try {
200	+	return Float.parseFloat(floatString);
201	+	} catch (NumberFormatException ex) {
202	+	throw new IllegalArgumentException(
203	+	String.format("Bad float value in system property %s=%s",
204	+	name, floatString));
205	+	}
206	+	}
207	+
208	+	/**
209	+	* The scaling factor to apply to standard delays used in tests.
210	+	* May be initialized from any of:
211	+	* - the "jsr166.delay.factor" system property
212	+	* - the "test.timeout.factor" system property (as used by jtreg)
213	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
214	+	* - hard-coded fuzz factor when using a known slowpoke VM
215	+	*/
216	+	private static final float delayFactor = delayFactor();
217	+
218	+	private static float delayFactor() {
219	+	float x;
220	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
221	+	return x;
222	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
223	+	return x;
224	+	String prop = System.getProperty("java.vm.version");
225	+	if (prop != null && prop.matches(".*debug.*"))
226	+	return 4.0f; // How much slower is fastdebug than product?!
227	+	return 1.0f;
228	+	}
229	+
230	+	public JSR166TestCase() { super(); }
231	+	public JSR166TestCase(String name) { super(name); }
232	+
233	+	/**
234	+	* A filter for tests to run, matching strings of the form
235	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
236	+	* Usefully combined with jsr166.runsPerTest.
237	+	*/
238	+	private static final Pattern methodFilter = methodFilter();
239	+
240	+	private static Pattern methodFilter() {
241	+	String regex = System.getProperty("jsr166.methodFilter");
242	+	return (regex == null) ? null : Pattern.compile(regex);
243	+	}
244	+
245	+	// Instrumentation to debug very rare, but very annoying hung test runs.
246	+	static volatile TestCase currentTestCase;
247	+	// static volatile int currentRun = 0;
248	+	static {
249	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
250	+	// Avoid spurious reports with enormous runsPerTest.
251	+	// A single test case run should never take more than 1 second.
252	+	// But let's cap it at the high end too ...
253	+	final int timeoutMinutes =
254	+	Math.min(15, Math.max(runsPerTest / 60, 1));
255	+	for (TestCase lastTestCase = currentTestCase;;) {
256	+	try { MINUTES.sleep(timeoutMinutes); }
257	+	catch (InterruptedException unexpected) { break; }
258	+	if (lastTestCase == currentTestCase) {
259	+	System.err.printf(
260	+	"Looks like we're stuck running test: %s%n",
261	+	lastTestCase);
262	+	//                     System.err.printf(
263	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
264	+	//                         lastTestCase, currentRun, runsPerTest);
265	+	//                     System.err.println("availableProcessors=" +
266	+	//                         Runtime.getRuntime().availableProcessors());
267	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
268	+	dumpTestThreads();
269	+	// one stack dump is probably enough; more would be spam
270	+	break;
271	+	}
272	+	lastTestCase = currentTestCase;
273	+	}}};
274	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
275	+	thread.setDaemon(true);
276	+	thread.start();
277	+	}
278	+
279	+	//     public static String cpuModel() {
280	+	//         try {
281	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
282	+	//                 .matcher(new String(
283	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
284	+	//             matcher.find();
285	+	//             return matcher.group(1);
286	+	//         } catch (Exception ex) { return null; }
287	+	//     }
288	+
289	+	public void runBare() throws Throwable {
290	+	currentTestCase = this;
291	+	if (methodFilter == null
292	+	|| methodFilter.matcher(toString()).find())
293	+	super.runBare();
294	+	}
295	+
296		protected void runTest() throws Throwable {
297	<	if (profileTests)
298	<	runTestProfiled();
299	<	else
300	<	super.runTest();
297	>	for (int i = 0; i < runsPerTest; i++) {
298	>	// currentRun = i;
299	>	if (profileTests)
300	>	runTestProfiled();
301	>	else
302	>	super.runTest();
303	>	}
304		}
305
306		protected void runTestProfiled() throws Throwable {
307	<	long t0 = System.nanoTime();
308	<	try {
307	>	for (int i = 0; i < 2; i++) {
308	>	long startTime = System.nanoTime();
309		super.runTest();
310	<	} finally {
311	<	long elapsedMillis =
312	<	(System.nanoTime() - t0) / (1000L * 1000L);
313	<	if (elapsedMillis >= profileThreshold)
310	>	long elapsedMillis = millisElapsedSince(startTime);
311	>	if (elapsedMillis < profileThreshold)
312	>	break;
313	>	// Never report first run of any test; treat it as a
314	>	// warmup run, notably to trigger all needed classloading,
315	>	if (i > 0)
316		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
317		}
318		}
319
320		/**
321		* Runs all JSR166 unit tests using junit.textui.TestRunner.
152	–	* Optional command line arg provides the number of iterations to
153	–	* repeat running the tests.
322		*/
323		public static void main(String[] args) {
324	+	main(suite(), args);
325	+	}
326	+
327	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
328	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
329	+	long runTime;
330	+	public void startTest(Test test) {}
331	+	protected void printHeader(long runTime) {
332	+	this.runTime = runTime; // defer printing for later
333	+	}
334	+	protected void printFooter(TestResult result) {
335	+	if (result.wasSuccessful()) {
336	+	getWriter().println("OK (" + result.runCount() + " tests)"
337	+	+ "  Time: " + elapsedTimeAsString(runTime));
338	+	} else {
339	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
340	+	super.printFooter(result);
341	+	}
342	+	}
343	+	}
344	+
345	+	/**
346	+	* Returns a TestRunner that doesn't bother with unnecessary
347	+	* fluff, like printing a "." for each test case.
348	+	*/
349	+	static junit.textui.TestRunner newPithyTestRunner() {
350	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
351	+	runner.setPrinter(new PithyResultPrinter(System.out));
352	+	return runner;
353	+	}
354	+
355	+	/**
356	+	* Runs all unit tests in the given test suite.
357	+	* Actual behavior influenced by jsr166.* system properties.
358	+	*/
359	+	static void main(Test suite, String[] args) {
360		if (useSecurityManager) {
361		System.err.println("Setting a permissive security manager");
362		Policy.setPolicy(permissivePolicy());
363		System.setSecurityManager(new SecurityManager());
364		}
365	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
366	<
367	<	Test s = suite();
368	<	for (int i = 0; i < iters; ++i) {
165	<	junit.textui.TestRunner.run(s);
365	>	for (int i = 0; i < suiteRuns; i++) {
366	>	TestResult result = newPithyTestRunner().doRun(suite);
367	>	if (!result.wasSuccessful())
368	>	System.exit(1);
369		System.gc();
370		System.runFinalization();
371		}
169	–	System.exit(0);
372		}
373
374		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 197 | Line 399 | public class JSR166TestCase extends Test
399		}
400
401		public static final double JAVA_CLASS_VERSION;
402	+	public static final String JAVA_SPECIFICATION_VERSION;
403		static {
404		try {
405		JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
406		new java.security.PrivilegedAction<Double>() {
407		public Double run() {
408		return Double.valueOf(System.getProperty("java.class.version"));}});
409	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
410	+	new java.security.PrivilegedAction<String>() {
411	+	public String run() {
412	+	return System.getProperty("java.specification.version");}});
413		} catch (Throwable t) {
414		throw new Error(t);
415		}
#	Line 211 | Line 418 | public class JSR166TestCase extends Test
418		public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
419		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
420		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
421	+	public static boolean atLeastJava9() {
422	+	return JAVA_CLASS_VERSION >= 53.0
423	+	// As of 2015-09, java9 still uses 52.0 class file version
424	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
425	+	}
426	+	public static boolean atLeastJava10() {
427	+	return JAVA_CLASS_VERSION >= 54.0
428	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
429	+	}
430
431		/**
432		* Collects all JSR166 unit tests as one suite.
#	Line 253 | Line 469 | public class JSR166TestCase extends Test
469		CopyOnWriteArrayListTest.suite(),
470		CopyOnWriteArraySetTest.suite(),
471		CountDownLatchTest.suite(),
472	+	CountedCompleterTest.suite(),
473		CyclicBarrierTest.suite(),
474		DelayQueueTest.suite(),
475		EntryTest.suite(),
#	Line 286 | Line 503 | public class JSR166TestCase extends Test
503		// Java8+ test classes
504		if (atLeastJava8()) {
505		String[] java8TestClassNames = {
506	+	"Atomic8Test",
507		"CompletableFutureTest",
508		"ConcurrentHashMap8Test",
509	<	"CountedCompleterTest",
509	>	"CountedCompleter8Test",
510		"DoubleAccumulatorTest",
511		"DoubleAdderTest",
512		"ForkJoinPool8Test",
513	+	"ForkJoinTask8Test",
514		"LongAccumulatorTest",
515		"LongAdderTest",
516	+	"SplittableRandomTest",
517		"StampedLockTest",
518	+	"SubmissionPublisherTest",
519	+	"ThreadLocalRandom8Test",
520	+	"TimeUnit8Test",
521		};
522		addNamedTestClasses(suite, java8TestClassNames);
523		}
524
525	+	// Java9+ test classes
526	+	if (atLeastJava9()) {
527	+	String[] java9TestClassNames = {
528	+	"AtomicBoolean9Test",
529	+	"AtomicInteger9Test",
530	+	"AtomicIntegerArray9Test",
531	+	"AtomicLong9Test",
532	+	"AtomicLongArray9Test",
533	+	"AtomicReference9Test",
534	+	"AtomicReferenceArray9Test",
535	+	"ExecutorCompletionService9Test",
536	+	};
537	+	addNamedTestClasses(suite, java9TestClassNames);
538	+	}
539	+
540		return suite;
541		}
542
543	+	/** Returns list of junit-style test method names in given class. */
544	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
545	+	Method[] methods = testClass.getDeclaredMethods();
546	+	ArrayList<String> names = new ArrayList<String>(methods.length);
547	+	for (Method method : methods) {
548	+	if (method.getName().startsWith("test")
549	+	&& Modifier.isPublic(method.getModifiers())
550	+	// method.getParameterCount() requires jdk8+
551	+	&& method.getParameterTypes().length == 0) {
552	+	names.add(method.getName());
553	+	}
554	+	}
555	+	return names;
556	+	}
557	+
558	+	/**
559	+	* Returns junit-style testSuite for the given test class, but
560	+	* parameterized by passing extra data to each test.
561	+	*/
562	+	public static <ExtraData> Test parameterizedTestSuite
563	+	(Class<? extends JSR166TestCase> testClass,
564	+	Class<ExtraData> dataClass,
565	+	ExtraData data) {
566	+	try {
567	+	TestSuite suite = new TestSuite();
568	+	Constructor c =
569	+	testClass.getDeclaredConstructor(dataClass, String.class);
570	+	for (String methodName : testMethodNames(testClass))
571	+	suite.addTest((Test) c.newInstance(data, methodName));
572	+	return suite;
573	+	} catch (Exception e) {
574	+	throw new Error(e);
575	+	}
576	+	}
577	+
578	+	/**
579	+	* Returns junit-style testSuite for the jdk8 extension of the
580	+	* given test class, but parameterized by passing extra data to
581	+	* each test.  Uses reflection to allow compilation in jdk7.
582	+	*/
583	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
584	+	(Class<? extends JSR166TestCase> testClass,
585	+	Class<ExtraData> dataClass,
586	+	ExtraData data) {
587	+	if (atLeastJava8()) {
588	+	String name = testClass.getName();
589	+	String name8 = name.replaceAll("Test$", "8Test");
590	+	if (name.equals(name8)) throw new Error(name);
591	+	try {
592	+	return (Test)
593	+	Class.forName(name8)
594	+	.getMethod("testSuite", new Class[] { dataClass })
595	+	.invoke(null, data);
596	+	} catch (Exception e) {
597	+	throw new Error(e);
598	+	}
599	+	} else {
600	+	return new TestSuite();
601	+	}
602	+	}
603	+
604	+	// Delays for timing-dependent tests, in milliseconds.
605
606		public static long SHORT_DELAY_MS;
607		public static long SMALL_DELAY_MS;
608		public static long MEDIUM_DELAY_MS;
609		public static long LONG_DELAY_MS;
610
311	–
611		/**
612	<	* Returns the shortest timed delay. This could
613	<	* be reimplemented to use for example a Property.
612	>	* Returns the shortest timed delay. This can be scaled up for
613	>	* slow machines using the jsr166.delay.factor system property,
614	>	* or via jtreg's -timeoutFactor: flag.
615	>	* http://openjdk.java.net/jtreg/command-help.html
616		*/
617		protected long getShortDelay() {
618	<	return 50;
618	>	return (long) (50 * delayFactor);
619		}
620
621		/**
#	Line 336 | Line 637 | public class JSR166TestCase extends Test
637		}
638
639		/**
640	<	* Returns a new Date instance representing a time delayMillis
641	<	* milliseconds in the future.
640	>	* Returns a new Date instance representing a time at least
641	>	* delayMillis milliseconds in the future.
642		*/
643		Date delayedDate(long delayMillis) {
644	<	return new Date(System.currentTimeMillis() + delayMillis);
644	>	// Add 1 because currentTimeMillis is known to round into the past.
645	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
646		}
647
648		/**
#	Line 356 | Line 658 | public class JSR166TestCase extends Test
658		* the same test have no effect.
659		*/
660		public void threadRecordFailure(Throwable t) {
661	+	System.err.println(t);
662	+	dumpTestThreads();
663		threadFailure.compareAndSet(null, t);
664		}
665
#	Line 363 | Line 667 | public class JSR166TestCase extends Test
667		setDelays();
668		}
669
670	+	void tearDownFail(String format, Object... args) {
671	+	String msg = toString() + ": " + String.format(format, args);
672	+	System.err.println(msg);
673	+	dumpTestThreads();
674	+	throw new AssertionFailedError(msg);
675	+	}
676	+
677		/**
678		* Extra checks that get done for all test cases.
679		*
#	Line 390 | Line 701 | public class JSR166TestCase extends Test
701		}
702
703		if (Thread.interrupted())
704	<	throw new AssertionFailedError("interrupt status set in main thread");
704	>	tearDownFail("interrupt status set in main thread");
705
706		checkForkJoinPoolThreadLeaks();
707		}
708
709		/**
710	<	* Find missing try { ... } finally { joinPool(e); }
710	>	* Finds missing PoolCleaners
711		*/
712		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
713	<	Thread[] survivors = new Thread[5];
713	>	Thread[] survivors = new Thread[7];
714		int count = Thread.enumerate(survivors);
715		for (int i = 0; i < count; i++) {
716		Thread thread = survivors[i];
#	Line 407 | Line 718 | public class JSR166TestCase extends Test
718		if (name.startsWith("ForkJoinPool-")) {
719		// give thread some time to terminate
720		thread.join(LONG_DELAY_MS);
721	<	if (!thread.isAlive()) continue;
722	<	thread.stop();
723	<	throw new AssertionFailedError
413	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
414	<	toString(), name));
721	>	if (thread.isAlive())
722	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
723	>	thread);
724		}
725		}
726	+
727	+	if (!ForkJoinPool.commonPool()
728	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
729	+	tearDownFail("ForkJoin common pool thread stuck");
730		}
731
732		/**
#	Line 426 | Line 739 | public class JSR166TestCase extends Test
739		fail(reason);
740		} catch (AssertionFailedError t) {
741		threadRecordFailure(t);
742	<	fail(reason);
742	>	throw t;
743		}
744		}
745
#	Line 494 | Line 807 | public class JSR166TestCase extends Test
807		public void threadAssertEquals(Object x, Object y) {
808		try {
809		assertEquals(x, y);
810	<	} catch (AssertionFailedError t) {
811	<	threadRecordFailure(t);
812	<	throw t;
813	<	} catch (Throwable t) {
814	<	threadUnexpectedException(t);
810	>	} catch (AssertionFailedError fail) {
811	>	threadRecordFailure(fail);
812	>	throw fail;
813	>	} catch (Throwable fail) {
814	>	threadUnexpectedException(fail);
815		}
816		}
817
#	Line 510 | Line 823 | public class JSR166TestCase extends Test
823		public void threadAssertSame(Object x, Object y) {
824		try {
825		assertSame(x, y);
826	<	} catch (AssertionFailedError t) {
827	<	threadRecordFailure(t);
828	<	throw t;
826	>	} catch (AssertionFailedError fail) {
827	>	threadRecordFailure(fail);
828	>	throw fail;
829		}
830		}
831
#	Line 553 | Line 866 | public class JSR166TestCase extends Test
866		/**
867		* Delays, via Thread.sleep, for the given millisecond delay, but
868		* if the sleep is shorter than specified, may re-sleep or yield
869	<	* until time elapses.
869	>	* until time elapses.  Ensures that the given time, as measured
870	>	* by System.nanoTime(), has elapsed.
871		*/
872		static void delay(long millis) throws InterruptedException {
873	<	long startTime = System.nanoTime();
874	<	long ns = millis * 1000 * 1000;
875	<	for (;;) {
873	>	long nanos = millis * (1000 * 1000);
874	>	final long wakeupTime = System.nanoTime() + nanos;
875	>	do {
876		if (millis > 0L)
877		Thread.sleep(millis);
878		else // too short to sleep
879		Thread.yield();
880	<	long d = ns - (System.nanoTime() - startTime);
881	<	if (d > 0L)
882	<	millis = d / (1000 * 1000);
883	<	else
884	<	break;
880	>	nanos = wakeupTime - System.nanoTime();
881	>	millis = nanos / (1000 * 1000);
882	>	} while (nanos >= 0L);
883	>	}
884	>
885	>	/**
886	>	* Allows use of try-with-resources with per-test thread pools.
887	>	*/
888	>	class PoolCleaner implements AutoCloseable {
889	>	private final ExecutorService pool;
890	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
891	>	public void close() { joinPool(pool); }
892	>	}
893	>
894	>	/**
895	>	* An extension of PoolCleaner that has an action to release the pool.
896	>	*/
897	>	class PoolCleanerWithReleaser extends PoolCleaner {
898	>	private final Runnable releaser;
899	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
900	>	super(pool);
901	>	this.releaser = releaser;
902		}
903	+	public void close() {
904	+	try {
905	+	releaser.run();
906	+	} finally {
907	+	super.close();
908	+	}
909	+	}
910	+	}
911	+
912	+	PoolCleaner cleaner(ExecutorService pool) {
913	+	return new PoolCleaner(pool);
914	+	}
915	+
916	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
917	+	return new PoolCleanerWithReleaser(pool, releaser);
918	+	}
919	+
920	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
921	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
922	+	}
923	+
924	+	Runnable releaser(final CountDownLatch latch) {
925	+	return new Runnable() { public void run() {
926	+	do { latch.countDown(); }
927	+	while (latch.getCount() > 0);
928	+	}};
929	+	}
930	+
931	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
932	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
933	+	}
934	+
935	+	Runnable releaser(final AtomicBoolean flag) {
936	+	return new Runnable() { public void run() { flag.set(true); }};
937		}
938
939		/**
940		* Waits out termination of a thread pool or fails doing so.
941		*/
942	<	void joinPool(ExecutorService exec) {
942	>	void joinPool(ExecutorService pool) {
943		try {
944	<	exec.shutdown();
945	<	assertTrue("ExecutorService did not terminate in a timely manner",
946	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
944	>	pool.shutdown();
945	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
946	>	try {
947	>	threadFail("ExecutorService " + pool +
948	>	" did not terminate in a timely manner");
949	>	} finally {
950	>	// last resort, for the benefit of subsequent tests
951	>	pool.shutdownNow();
952	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
953	>	}
954	>	}
955		} catch (SecurityException ok) {
956		// Allowed in case test doesn't have privs
957	<	} catch (InterruptedException ie) {
958	<	fail("Unexpected InterruptedException");
957	>	} catch (InterruptedException fail) {
958	>	threadFail("Unexpected InterruptedException");
959		}
960		}
961
962		/**
963	<	* A debugging tool to print all stack traces, as jstack does.
963	>	* Like Runnable, but with the freedom to throw anything.
964	>	* junit folks had the same idea:
965	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
966	>	*/
967	>	interface Action { public void run() throws Throwable; }
968	>
969	>	/**
970	>	* Runs all the given actions in parallel, failing if any fail.
971	>	* Useful for running multiple variants of tests that are
972	>	* necessarily individually slow because they must block.
973		*/
974	<	static void printAllStackTraces() {
975	<	for (ThreadInfo info :
976	<	ManagementFactory.getThreadMXBean()
977	<	.dumpAllThreads(true, true))
974	>	void testInParallel(Action ... actions) {
975	>	ExecutorService pool = Executors.newCachedThreadPool();
976	>	try (PoolCleaner cleaner = cleaner(pool)) {
977	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
978	>	for (final Action action : actions)
979	>	futures.add(pool.submit(new CheckedRunnable() {
980	>	public void realRun() throws Throwable { action.run();}}));
981	>	for (Future<?> future : futures)
982	>	try {
983	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
984	>	} catch (ExecutionException ex) {
985	>	threadUnexpectedException(ex.getCause());
986	>	} catch (Exception ex) {
987	>	threadUnexpectedException(ex);
988	>	}
989	>	}
990	>	}
991	>
992	>	/**
993	>	* A debugging tool to print stack traces of most threads, as jstack does.
994	>	* Uninteresting threads are filtered out.
995	>	*/
996	>	static void dumpTestThreads() {
997	>	SecurityManager sm = System.getSecurityManager();
998	>	if (sm != null) {
999	>	try {
1000	>	System.setSecurityManager(null);
1001	>	} catch (SecurityException giveUp) {
1002	>	return;
1003	>	}
1004	>	}
1005	>
1006	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1007	>	System.err.println("------ stacktrace dump start ------");
1008	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1009	>	final String name = info.getThreadName();
1010	>	String lockName;
1011	>	if ("Signal Dispatcher".equals(name))
1012	>	continue;
1013	>	if ("Reference Handler".equals(name)
1014	>	&& (lockName = info.getLockName()) != null
1015	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1016	>	continue;
1017	>	if ("Finalizer".equals(name)
1018	>	&& (lockName = info.getLockName()) != null
1019	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1020	>	continue;
1021	>	if ("checkForWedgedTest".equals(name))
1022	>	continue;
1023		System.err.print(info);
1024	+	}
1025	+	System.err.println("------ stacktrace dump end ------");
1026	+
1027	+	if (sm != null) System.setSecurityManager(sm);
1028		}
1029
1030		/**
#	Line 612 | Line 1043 | public class JSR166TestCase extends Test
1043		// No need to optimize the failing case via Thread.join.
1044		delay(millis);
1045		assertTrue(thread.isAlive());
1046	<	} catch (InterruptedException ie) {
1047	<	fail("Unexpected InterruptedException");
1046	>	} catch (InterruptedException fail) {
1047	>	threadFail("Unexpected InterruptedException");
1048		}
1049		}
1050
#	Line 634 | Line 1065 | public class JSR166TestCase extends Test
1065		delay(millis);
1066		for (Thread thread : threads)
1067		assertTrue(thread.isAlive());
1068	<	} catch (InterruptedException ie) {
1069	<	fail("Unexpected InterruptedException");
1068	>	} catch (InterruptedException fail) {
1069	>	threadFail("Unexpected InterruptedException");
1070		}
1071		}
1072
#	Line 656 | Line 1087 | public class JSR166TestCase extends Test
1087		future.get(timeoutMillis, MILLISECONDS);
1088		shouldThrow();
1089		} catch (TimeoutException success) {
1090	<	} catch (Exception e) {
1091	<	threadUnexpectedException(e);
1090	>	} catch (Exception fail) {
1091	>	threadUnexpectedException(fail);
1092		} finally { future.cancel(true); }
1093		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1094		}
#	Line 701 | Line 1132 | public class JSR166TestCase extends Test
1132		public static final Integer m6  = new Integer(-6);
1133		public static final Integer m10 = new Integer(-10);
1134
704	–
1135		/**
1136		* Runs Runnable r with a security policy that permits precisely
1137		* the specified permissions.  If there is no current security
#	Line 811 | Line 1241 | public class JSR166TestCase extends Test
1241		* Sleeps until the given time has elapsed.
1242		* Throws AssertionFailedError if interrupted.
1243		*/
1244	<	void sleep(long millis) {
1244	>	static void sleep(long millis) {
1245		try {
1246		delay(millis);
1247	<	} catch (InterruptedException ie) {
1247	>	} catch (InterruptedException fail) {
1248		AssertionFailedError afe =
1249		new AssertionFailedError("Unexpected InterruptedException");
1250	<	afe.initCause(ie);
1250	>	afe.initCause(fail);
1251		throw afe;
1252		}
1253		}
#	Line 827 | Line 1257 | public class JSR166TestCase extends Test
1257		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1258		*/
1259		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1260	<	long startTime = System.nanoTime();
1260	>	long startTime = 0L;
1261		for (;;) {
1262		Thread.State s = thread.getState();
1263		if (s == Thread.State.BLOCKED ||
#	Line 836 | Line 1266 | public class JSR166TestCase extends Test
1266		return;
1267		else if (s == Thread.State.TERMINATED)
1268		fail("Unexpected thread termination");
1269	+	else if (startTime == 0L)
1270	+	startTime = System.nanoTime();
1271		else if (millisElapsedSince(startTime) > timeoutMillis) {
1272		threadAssertTrue(thread.isAlive());
1273		return;
#	Line 855 | Line 1287 | public class JSR166TestCase extends Test
1287		/**
1288		* Returns the number of milliseconds since time given by
1289		* startNanoTime, which must have been previously returned from a
1290	<	* call to {@link System.nanoTime()}.
1290	>	* call to {@link System#nanoTime()}.
1291		*/
1292	<	long millisElapsedSince(long startNanoTime) {
1292	>	static long millisElapsedSince(long startNanoTime) {
1293		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1294		}
1295
1296	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1297	+	//         long startTime = System.nanoTime();
1298	+	//         try {
1299	+	//             r.run();
1300	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1301	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1302	+	//             throw new AssertionFailedError("did not return promptly");
1303	+	//     }
1304	+
1305	+	//     void assertTerminatesPromptly(Runnable r) {
1306	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1307	+	//     }
1308	+
1309	+	/**
1310	+	* Checks that timed f.get() returns the expected value, and does not
1311	+	* wait for the timeout to elapse before returning.
1312	+	*/
1313	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1314	+	long startTime = System.nanoTime();
1315	+	try {
1316	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1317	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1318	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1319	+	throw new AssertionFailedError("timed get did not return promptly");
1320	+	}
1321	+
1322	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1323	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1324	+	}
1325	+
1326		/**
1327		* Returns a new started daemon Thread running the given runnable.
1328		*/
#	Line 879 | Line 1341 | public class JSR166TestCase extends Test
1341		void awaitTermination(Thread t, long timeoutMillis) {
1342		try {
1343		t.join(timeoutMillis);
1344	<	} catch (InterruptedException ie) {
1345	<	threadUnexpectedException(ie);
1344	>	} catch (InterruptedException fail) {
1345	>	threadUnexpectedException(fail);
1346		} finally {
1347		if (t.getState() != Thread.State.TERMINATED) {
1348		t.interrupt();
1349	<	fail("Test timed out");
1349	>	threadFail("timed out waiting for thread to terminate");
1350		}
1351		}
1352		}
#	Line 906 | Line 1368 | public class JSR166TestCase extends Test
1368		public final void run() {
1369		try {
1370		realRun();
1371	<	} catch (Throwable t) {
1372	<	threadUnexpectedException(t);
1371	>	} catch (Throwable fail) {
1372	>	threadUnexpectedException(fail);
1373		}
1374		}
1375		}
#	Line 961 | Line 1423 | public class JSR166TestCase extends Test
1423		threadShouldThrow("InterruptedException");
1424		} catch (InterruptedException success) {
1425		threadAssertFalse(Thread.interrupted());
1426	<	} catch (Throwable t) {
1427	<	threadUnexpectedException(t);
1426	>	} catch (Throwable fail) {
1427	>	threadUnexpectedException(fail);
1428		}
1429		}
1430		}
#	Line 973 | Line 1435 | public class JSR166TestCase extends Test
1435		public final T call() {
1436		try {
1437		return realCall();
1438	<	} catch (Throwable t) {
1439	<	threadUnexpectedException(t);
1438	>	} catch (Throwable fail) {
1439	>	threadUnexpectedException(fail);
1440		return null;
1441		}
1442		}
#	Line 991 | Line 1453 | public class JSR166TestCase extends Test
1453		return result;
1454		} catch (InterruptedException success) {
1455		threadAssertFalse(Thread.interrupted());
1456	<	} catch (Throwable t) {
1457	<	threadUnexpectedException(t);
1456	>	} catch (Throwable fail) {
1457	>	threadUnexpectedException(fail);
1458		}
1459		return null;
1460		}
#	Line 1009 | Line 1471 | public class JSR166TestCase extends Test
1471		public static final String TEST_STRING = "a test string";
1472
1473		public static class StringTask implements Callable<String> {
1474	<	public String call() { return TEST_STRING; }
1474	>	final String value;
1475	>	public StringTask() { this(TEST_STRING); }
1476	>	public StringTask(String value) { this.value = value; }
1477	>	public String call() { return value; }
1478		}
1479
1480		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1022 | Line 1487 | public class JSR166TestCase extends Test
1487		}};
1488		}
1489
1490	<	public Runnable awaiter(final CountDownLatch latch) {
1490	>	public Runnable countDowner(final CountDownLatch latch) {
1491		return new CheckedRunnable() {
1492		public void realRun() throws InterruptedException {
1493	<	await(latch);
1493	>	latch.countDown();
1494		}};
1495		}
1496
1497	<	public void await(CountDownLatch latch) {
1497	>	class LatchAwaiter extends CheckedRunnable {
1498	>	static final int NEW = 0;
1499	>	static final int RUNNING = 1;
1500	>	static final int DONE = 2;
1501	>	final CountDownLatch latch;
1502	>	int state = NEW;
1503	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1504	>	public void realRun() throws InterruptedException {
1505	>	state = 1;
1506	>	await(latch);
1507	>	state = 2;
1508	>	}
1509	>	}
1510	>
1511	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1512	>	return new LatchAwaiter(latch);
1513	>	}
1514	>
1515	>	public void await(CountDownLatch latch, long timeoutMillis) {
1516		try {
1517	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1518	<	} catch (Throwable t) {
1519	<	threadUnexpectedException(t);
1517	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1518	>	fail("timed out waiting for CountDownLatch for "
1519	>	+ (timeoutMillis/1000) + " sec");
1520	>	} catch (Throwable fail) {
1521	>	threadUnexpectedException(fail);
1522		}
1523		}
1524
1525	+	public void await(CountDownLatch latch) {
1526	+	await(latch, LONG_DELAY_MS);
1527	+	}
1528	+
1529		public void await(Semaphore semaphore) {
1530		try {
1531	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1532	<	} catch (Throwable t) {
1533	<	threadUnexpectedException(t);
1531	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1532	>	fail("timed out waiting for Semaphore for "
1533	>	+ (LONG_DELAY_MS/1000) + " sec");
1534	>	} catch (Throwable fail) {
1535	>	threadUnexpectedException(fail);
1536		}
1537		}
1538
#	Line 1232 | Line 1723 | public class JSR166TestCase extends Test
1723		public abstract class CheckedRecursiveAction extends RecursiveAction {
1724		protected abstract void realCompute() throws Throwable;
1725
1726	<	public final void compute() {
1726	>	@Override protected final void compute() {
1727		try {
1728		realCompute();
1729	<	} catch (Throwable t) {
1730	<	threadUnexpectedException(t);
1729	>	} catch (Throwable fail) {
1730	>	threadUnexpectedException(fail);
1731		}
1732		}
1733		}
#	Line 1247 | Line 1738 | public class JSR166TestCase extends Test
1738		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1739		protected abstract T realCompute() throws Throwable;
1740
1741	<	public final T compute() {
1741	>	@Override protected final T compute() {
1742		try {
1743		return realCompute();
1744	<	} catch (Throwable t) {
1745	<	threadUnexpectedException(t);
1744	>	} catch (Throwable fail) {
1745	>	threadUnexpectedException(fail);
1746		return null;
1747		}
1748		}
#	Line 1269 | Line 1760 | public class JSR166TestCase extends Test
1760		* A CyclicBarrier that uses timed await and fails with
1761		* AssertionFailedErrors instead of throwing checked exceptions.
1762		*/
1763	<	public class CheckedBarrier extends CyclicBarrier {
1763	>	public static class CheckedBarrier extends CyclicBarrier {
1764		public CheckedBarrier(int parties) { super(parties); }
1765
1766		public int await() {
1767		try {
1768		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1769	<	} catch (TimeoutException e) {
1769	>	} catch (TimeoutException timedOut) {
1770		throw new AssertionFailedError("timed out");
1771	<	} catch (Exception e) {
1771	>	} catch (Exception fail) {
1772		AssertionFailedError afe =
1773	<	new AssertionFailedError("Unexpected exception: " + e);
1774	<	afe.initCause(e);
1773	>	new AssertionFailedError("Unexpected exception: " + fail);
1774	>	afe.initCause(fail);
1775		throw afe;
1776		}
1777		}
#	Line 1308 | Line 1799 | public class JSR166TestCase extends Test
1799		q.remove();
1800		shouldThrow();
1801		} catch (NoSuchElementException success) {}
1802	<	} catch (InterruptedException ie) {
1312	<	threadUnexpectedException(ie);
1313	<	}
1802	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1803		}
1804
1805		void assertSerialEquals(Object x, Object y) {
#	Line 1329 | Line 1818 | public class JSR166TestCase extends Test
1818		oos.flush();
1819		oos.close();
1820		return bos.toByteArray();
1821	<	} catch (Throwable t) {
1822	<	threadUnexpectedException(t);
1821	>	} catch (Throwable fail) {
1822	>	threadUnexpectedException(fail);
1823		return new byte[0];
1824		}
1825		}
#	Line 1343 | Line 1832 | public class JSR166TestCase extends Test
1832		T clone = (T) ois.readObject();
1833		assertSame(o.getClass(), clone.getClass());
1834		return clone;
1835	<	} catch (Throwable t) {
1836	<	threadUnexpectedException(t);
1835	>	} catch (Throwable fail) {
1836	>	threadUnexpectedException(fail);
1837		return null;
1838		}
1839		}
1840	+
1841	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1842	+	Runnable... throwingActions) {
1843	+	for (Runnable throwingAction : throwingActions) {
1844	+	boolean threw = false;
1845	+	try { throwingAction.run(); }
1846	+	catch (Throwable t) {
1847	+	threw = true;
1848	+	if (!expectedExceptionClass.isInstance(t)) {
1849	+	AssertionFailedError afe =
1850	+	new AssertionFailedError
1851	+	("Expected " + expectedExceptionClass.getName() +
1852	+	", got " + t.getClass().getName());
1853	+	afe.initCause(t);
1854	+	threadUnexpectedException(afe);
1855	+	}
1856	+	}
1857	+	if (!threw)
1858	+	shouldThrow(expectedExceptionClass.getName());
1859	+	}
1860	+	}
1861	+
1862	+	public void assertIteratorExhausted(Iterator<?> it) {
1863	+	try {
1864	+	it.next();
1865	+	shouldThrow();
1866	+	} catch (NoSuchElementException success) {}
1867	+	assertFalse(it.hasNext());
1868	+	}
1869	+
1870	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1871	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1872	+	}
1873	+
1874	+	public Runnable runnableThrowing(final RuntimeException ex) {
1875	+	return new Runnable() { public void run() { throw ex; }};
1876	+	}
1877	+
1878	+	/** A reusable thread pool to be shared by tests. */
1879	+	static final ExecutorService cachedThreadPool =
1880	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1881	+	1000L, MILLISECONDS,
1882	+	new SynchronousQueue<Runnable>());
1883	+
1884	+	static <T> void shuffle(T[] array) {
1885	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1886	+	}
1887		}

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