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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.83 by jsr166, Fri May 27 19:29:59 2011 UTC vs.
Revision 1.193 by jsr166, Mon May 23 18:19:48 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	>	*/
16	>
17	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
18	>	import static java.util.concurrent.TimeUnit.MINUTES;
19	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
20	>
21		import java.io.ByteArrayInputStream;
22		import java.io.ByteArrayOutputStream;
23		import java.io.ObjectInputStream;
24		import java.io.ObjectOutputStream;
25	<	import java.util.Arrays;
26	<	import java.util.Date;
27	<	import java.util.NoSuchElementException;
28	<	import java.util.PropertyPermission;
29	<	import java.util.concurrent.*;
30	<	import java.util.concurrent.atomic.AtomicBoolean;
31	<	import java.util.concurrent.atomic.AtomicReference;
32	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
22	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
25	>	import java.lang.management.ManagementFactory;
26	>	import java.lang.management.ThreadInfo;
27	>	import java.lang.management.ThreadMXBean;
28	>	import java.lang.reflect.Constructor;
29	>	import java.lang.reflect.Method;
30	>	import java.lang.reflect.Modifier;
31	>	import java.nio.file.Files;
32	>	import java.nio.file.Paths;
33		import java.security.CodeSource;
34		import java.security.Permission;
35		import java.security.PermissionCollection;
#	Line 27 | Line 37 | import java.security.Permissions;
37		import java.security.Policy;
38		import java.security.ProtectionDomain;
39		import java.security.SecurityPermission;
40	+	import java.util.ArrayList;
41	+	import java.util.Arrays;
42	+	import java.util.Date;
43	+	import java.util.Enumeration;
44	+	import java.util.Iterator;
45	+	import java.util.List;
46	+	import java.util.NoSuchElementException;
47	+	import java.util.PropertyPermission;
48	+	import java.util.concurrent.BlockingQueue;
49	+	import java.util.concurrent.Callable;
50	+	import java.util.concurrent.CountDownLatch;
51	+	import java.util.concurrent.CyclicBarrier;
52	+	import java.util.concurrent.ExecutionException;
53	+	import java.util.concurrent.Executors;
54	+	import java.util.concurrent.ExecutorService;
55	+	import java.util.concurrent.ForkJoinPool;
56	+	import java.util.concurrent.Future;
57	+	import java.util.concurrent.RecursiveAction;
58	+	import java.util.concurrent.RecursiveTask;
59	+	import java.util.concurrent.RejectedExecutionHandler;
60	+	import java.util.concurrent.Semaphore;
61	+	import java.util.concurrent.SynchronousQueue;
62	+	import java.util.concurrent.ThreadFactory;
63	+	import java.util.concurrent.ThreadPoolExecutor;
64	+	import java.util.concurrent.TimeoutException;
65	+	import java.util.concurrent.atomic.AtomicBoolean;
66	+	import java.util.concurrent.atomic.AtomicReference;
67	+	import java.util.regex.Matcher;
68	+	import java.util.regex.Pattern;
69	+
70	+	import junit.framework.AssertionFailedError;
71	+	import junit.framework.Test;
72	+	import junit.framework.TestCase;
73	+	import junit.framework.TestResult;
74	+	import junit.framework.TestSuite;
75
76		/**
77		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 38 | Line 83 | import java.security.SecurityPermission;
83		*
84		* <ol>
85		*
86	<	* <li> All assertions in code running in generated threads must use
86	>	* <li>All assertions in code running in generated threads must use
87		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
88		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
89		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
90		* particularly recommended) for other code to use these forms too.
91		* Only the most typically used JUnit assertion methods are defined
92	<	* this way, but enough to live with.</li>
92	>	* this way, but enough to live with.
93		*
94	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
94	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
95		* to invoke {@code super.setUp} and {@code super.tearDown} within
96		* them. These methods are used to clear and check for thread
97	<	* assertion failures.</li>
97	>	* assertion failures.
98		*
99		* <li>All delays and timeouts must use one of the constants {@code
100		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 60 | Line 105 | import java.security.SecurityPermission;
105		* is always discriminable as larger than SHORT and smaller than
106		* MEDIUM.  And so on. These constants are set to conservative values,
107		* but even so, if there is ever any doubt, they can all be increased
108	<	* in one spot to rerun tests on slower platforms.</li>
108	>	* in one spot to rerun tests on slower platforms.
109		*
110	<	* <li> All threads generated must be joined inside each test case
110	>	* <li>All threads generated must be joined inside each test case
111		* method (or {@code fail} to do so) before returning from the
112		* method. The {@code joinPool} method can be used to do this when
113	<	* using Executors.</li>
113	>	* using Executors.
114		*
115		* </ol>
116		*
117	<	* <p> <b>Other notes</b>
117	>	* <p><b>Other notes</b>
118		* <ul>
119		*
120	<	* <li> Usually, there is one testcase method per JSR166 method
120	>	* <li>Usually, there is one testcase method per JSR166 method
121		* covering "normal" operation, and then as many exception-testing
122		* methods as there are exceptions the method can throw. Sometimes
123		* there are multiple tests per JSR166 method when the different
124		* "normal" behaviors differ significantly. And sometimes testcases
125	<	* cover multiple methods when they cannot be tested in
81	<	* isolation.</li>
125	>	* cover multiple methods when they cannot be tested in isolation.
126		*
127	<	* <li> The documentation style for testcases is to provide as javadoc
127	>	* <li>The documentation style for testcases is to provide as javadoc
128		* a simple sentence or two describing the property that the testcase
129		* method purports to test. The javadocs do not say anything about how
130	<	* the property is tested. To find out, read the code.</li>
130	>	* the property is tested. To find out, read the code.
131		*
132	<	* <li> These tests are "conformance tests", and do not attempt to
132	>	* <li>These tests are "conformance tests", and do not attempt to
133		* test throughput, latency, scalability or other performance factors
134		* (see the separate "jtreg" tests for a set intended to check these
135		* for the most central aspects of functionality.) So, most tests use
136		* the smallest sensible numbers of threads, collection sizes, etc
137	<	* needed to check basic conformance.</li>
137	>	* needed to check basic conformance.
138		*
139		* <li>The test classes currently do not declare inclusion in
140		* any particular package to simplify things for people integrating
141	<	* them in TCK test suites.</li>
141	>	* them in TCK test suites.
142		*
143	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
144	<	* runs all JSR166 unit tests.</li>
143	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
144	>	* runs all JSR166 unit tests.
145		*
146		* </ul>
147		*/
#	Line 109 | Line 153 | public class JSR166TestCase extends Test
153		Boolean.getBoolean("jsr166.expensiveTests");
154
155		/**
156	+	* If true, also run tests that are not part of the official tck
157	+	* because they test unspecified implementation details.
158	+	*/
159	+	protected static final boolean testImplementationDetails =
160	+	Boolean.getBoolean("jsr166.testImplementationDetails");
161	+
162	+	/**
163		* If true, report on stdout all "slow" tests, that is, ones that
164		* take more than profileThreshold milliseconds to execute.
165		*/
#	Line 122 | Line 173 | public class JSR166TestCase extends Test
173		private static final long profileThreshold =
174		Long.getLong("jsr166.profileThreshold", 100);
175
176	+	/**
177	+	* The number of repetitions per test (for tickling rare bugs).
178	+	*/
179	+	private static final int runsPerTest =
180	+	Integer.getInteger("jsr166.runsPerTest", 1);
181	+
182	+	/**
183	+	* The number of repetitions of the test suite (for finding leaks?).
184	+	*/
185	+	private static final int suiteRuns =
186	+	Integer.getInteger("jsr166.suiteRuns", 1);
187	+
188	+	/**
189	+	* Returns the value of the system property, or NaN if not defined.
190	+	*/
191	+	private static float systemPropertyValue(String name) {
192	+	String floatString = System.getProperty(name);
193	+	if (floatString == null)
194	+	return Float.NaN;
195	+	try {
196	+	return Float.parseFloat(floatString);
197	+	} catch (NumberFormatException ex) {
198	+	throw new IllegalArgumentException(
199	+	String.format("Bad float value in system property %s=%s",
200	+	name, floatString));
201	+	}
202	+	}
203	+
204	+	/**
205	+	* The scaling factor to apply to standard delays used in tests.
206	+	* May be initialized from any of:
207	+	* - the "jsr166.delay.factor" system property
208	+	* - the "test.timeout.factor" system property (as used by jtreg)
209	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
210	+	* - hard-coded fuzz factor when using a known slowpoke VM
211	+	*/
212	+	private static final float delayFactor = delayFactor();
213	+
214	+	private static float delayFactor() {
215	+	float x;
216	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
217	+	return x;
218	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
219	+	return x;
220	+	String prop = System.getProperty("java.vm.version");
221	+	if (prop != null && prop.matches(".*debug.*"))
222	+	return 4.0f; // How much slower is fastdebug than product?!
223	+	return 1.0f;
224	+	}
225	+
226	+	public JSR166TestCase() { super(); }
227	+	public JSR166TestCase(String name) { super(name); }
228	+
229	+	/**
230	+	* A filter for tests to run, matching strings of the form
231	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
232	+	* Usefully combined with jsr166.runsPerTest.
233	+	*/
234	+	private static final Pattern methodFilter = methodFilter();
235	+
236	+	private static Pattern methodFilter() {
237	+	String regex = System.getProperty("jsr166.methodFilter");
238	+	return (regex == null) ? null : Pattern.compile(regex);
239	+	}
240	+
241	+	// Instrumentation to debug very rare, but very annoying hung test runs.
242	+	static volatile TestCase currentTestCase;
243	+	// static volatile int currentRun = 0;
244	+	static {
245	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
246	+	// Avoid spurious reports with enormous runsPerTest.
247	+	// A single test case run should never take more than 1 second.
248	+	// But let's cap it at the high end too ...
249	+	final int timeoutMinutes =
250	+	Math.min(15, Math.max(runsPerTest / 60, 1));
251	+	for (TestCase lastTestCase = currentTestCase;;) {
252	+	try { MINUTES.sleep(timeoutMinutes); }
253	+	catch (InterruptedException unexpected) { break; }
254	+	if (lastTestCase == currentTestCase) {
255	+	System.err.printf(
256	+	"Looks like we're stuck running test: %s%n",
257	+	lastTestCase);
258	+	//                     System.err.printf(
259	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
260	+	//                         lastTestCase, currentRun, runsPerTest);
261	+	//                     System.err.println("availableProcessors=" +
262	+	//                         Runtime.getRuntime().availableProcessors());
263	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
264	+	dumpTestThreads();
265	+	// one stack dump is probably enough; more would be spam
266	+	break;
267	+	}
268	+	lastTestCase = currentTestCase;
269	+	}}};
270	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
271	+	thread.setDaemon(true);
272	+	thread.start();
273	+	}
274	+
275	+	//     public static String cpuModel() {
276	+	//         try {
277	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
278	+	//                 .matcher(new String(
279	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
280	+	//             matcher.find();
281	+	//             return matcher.group(1);
282	+	//         } catch (Exception ex) { return null; }
283	+	//     }
284	+
285	+	public void runBare() throws Throwable {
286	+	currentTestCase = this;
287	+	if (methodFilter == null
288	+	|| methodFilter.matcher(toString()).find())
289	+	super.runBare();
290	+	}
291	+
292		protected void runTest() throws Throwable {
293	<	if (profileTests)
294	<	runTestProfiled();
295	<	else
296	<	super.runTest();
293	>	for (int i = 0; i < runsPerTest; i++) {
294	>	// currentRun = i;
295	>	if (profileTests)
296	>	runTestProfiled();
297	>	else
298	>	super.runTest();
299	>	}
300		}
301
302		protected void runTestProfiled() throws Throwable {
303	<	long t0 = System.nanoTime();
304	<	try {
303	>	for (int i = 0; i < 2; i++) {
304	>	long startTime = System.nanoTime();
305		super.runTest();
306	<	} finally {
307	<	long elapsedMillis =
308	<	(System.nanoTime() - t0) / (1000L * 1000L);
309	<	if (elapsedMillis >= profileThreshold)
306	>	long elapsedMillis = millisElapsedSince(startTime);
307	>	if (elapsedMillis < profileThreshold)
308	>	break;
309	>	// Never report first run of any test; treat it as a
310	>	// warmup run, notably to trigger all needed classloading,
311	>	if (i > 0)
312		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
313		}
314		}
315
316		/**
317	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
317	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
318		*/
319		public static void main(String[] args) {
320	+	main(suite(), args);
321	+	}
322	+
323	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
324	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
325	+	long runTime;
326	+	public void startTest(Test test) {}
327	+	protected void printHeader(long runTime) {
328	+	this.runTime = runTime; // defer printing for later
329	+	}
330	+	protected void printFooter(TestResult result) {
331	+	if (result.wasSuccessful()) {
332	+	getWriter().println("OK (" + result.runCount() + " tests)"
333	+	+ "  Time: " + elapsedTimeAsString(runTime));
334	+	} else {
335	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
336	+	super.printFooter(result);
337	+	}
338	+	}
339	+	}
340	+
341	+	/**
342	+	* Returns a TestRunner that doesn't bother with unnecessary
343	+	* fluff, like printing a "." for each test case.
344	+	*/
345	+	static junit.textui.TestRunner newPithyTestRunner() {
346	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
347	+	runner.setPrinter(new PithyResultPrinter(System.out));
348	+	return runner;
349	+	}
350	+
351	+	/**
352	+	* Runs all unit tests in the given test suite.
353	+	* Actual behavior influenced by jsr166.* system properties.
354	+	*/
355	+	static void main(Test suite, String[] args) {
356		if (useSecurityManager) {
357		System.err.println("Setting a permissive security manager");
358		Policy.setPolicy(permissivePolicy());
359		System.setSecurityManager(new SecurityManager());
360		}
361	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
362	<
363	<	Test s = suite();
364	<	for (int i = 0; i < iters; ++i) {
157	<	junit.textui.TestRunner.run(s);
361	>	for (int i = 0; i < suiteRuns; i++) {
362	>	TestResult result = newPithyTestRunner().doRun(suite);
363	>	if (!result.wasSuccessful())
364	>	System.exit(1);
365		System.gc();
366		System.runFinalization();
367		}
161	–	System.exit(0);
368		}
369
370		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 174 | Line 380 | public class JSR166TestCase extends Test
380		return suite;
381		}
382
383	+	public static void addNamedTestClasses(TestSuite suite,
384	+	String... testClassNames) {
385	+	for (String testClassName : testClassNames) {
386	+	try {
387	+	Class<?> testClass = Class.forName(testClassName);
388	+	Method m = testClass.getDeclaredMethod("suite",
389	+	new Class<?>[0]);
390	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
391	+	} catch (Exception e) {
392	+	throw new Error("Missing test class", e);
393	+	}
394	+	}
395	+	}
396	+
397	+	public static final double JAVA_CLASS_VERSION;
398	+	public static final String JAVA_SPECIFICATION_VERSION;
399	+	static {
400	+	try {
401	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
402	+	new java.security.PrivilegedAction<Double>() {
403	+	public Double run() {
404	+	return Double.valueOf(System.getProperty("java.class.version"));}});
405	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
406	+	new java.security.PrivilegedAction<String>() {
407	+	public String run() {
408	+	return System.getProperty("java.specification.version");}});
409	+	} catch (Throwable t) {
410	+	throw new Error(t);
411	+	}
412	+	}
413	+
414	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
415	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
416	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
417	+	public static boolean atLeastJava9() {
418	+	return JAVA_CLASS_VERSION >= 53.0
419	+	// As of 2015-09, java9 still uses 52.0 class file version
420	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
421	+	}
422	+	public static boolean atLeastJava10() {
423	+	return JAVA_CLASS_VERSION >= 54.0
424	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
425	+	}
426	+
427		/**
428		* Collects all JSR166 unit tests as one suite.
429		*/
430		public static Test suite() {
431	<	return newTestSuite(
431	>	// Java7+ test classes
432	>	TestSuite suite = newTestSuite(
433		ForkJoinPoolTest.suite(),
434		ForkJoinTaskTest.suite(),
435		RecursiveActionTest.suite(),
#	Line 243 | Line 494 | public class JSR166TestCase extends Test
494		TreeSetTest.suite(),
495		TreeSubMapTest.suite(),
496		TreeSubSetTest.suite());
497	+
498	+	// Java8+ test classes
499	+	if (atLeastJava8()) {
500	+	String[] java8TestClassNames = {
501	+	"Atomic8Test",
502	+	"CompletableFutureTest",
503	+	"ConcurrentHashMap8Test",
504	+	"CountedCompleterTest",
505	+	"DoubleAccumulatorTest",
506	+	"DoubleAdderTest",
507	+	"ForkJoinPool8Test",
508	+	"ForkJoinTask8Test",
509	+	"LongAccumulatorTest",
510	+	"LongAdderTest",
511	+	"SplittableRandomTest",
512	+	"StampedLockTest",
513	+	"SubmissionPublisherTest",
514	+	"ThreadLocalRandom8Test",
515	+	"TimeUnit8Test",
516	+	};
517	+	addNamedTestClasses(suite, java8TestClassNames);
518	+	}
519	+
520	+	// Java9+ test classes
521	+	if (atLeastJava9()) {
522	+	String[] java9TestClassNames = {
523	+	"ExecutorCompletionService9Test",
524	+	};
525	+	addNamedTestClasses(suite, java9TestClassNames);
526	+	}
527	+
528	+	return suite;
529		}
530
531	+	/** Returns list of junit-style test method names in given class. */
532	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
533	+	Method[] methods = testClass.getDeclaredMethods();
534	+	ArrayList<String> names = new ArrayList<String>(methods.length);
535	+	for (Method method : methods) {
536	+	if (method.getName().startsWith("test")
537	+	&& Modifier.isPublic(method.getModifiers())
538	+	// method.getParameterCount() requires jdk8+
539	+	&& method.getParameterTypes().length == 0) {
540	+	names.add(method.getName());
541	+	}
542	+	}
543	+	return names;
544	+	}
545	+
546	+	/**
547	+	* Returns junit-style testSuite for the given test class, but
548	+	* parameterized by passing extra data to each test.
549	+	*/
550	+	public static <ExtraData> Test parameterizedTestSuite
551	+	(Class<? extends JSR166TestCase> testClass,
552	+	Class<ExtraData> dataClass,
553	+	ExtraData data) {
554	+	try {
555	+	TestSuite suite = new TestSuite();
556	+	Constructor c =
557	+	testClass.getDeclaredConstructor(dataClass, String.class);
558	+	for (String methodName : testMethodNames(testClass))
559	+	suite.addTest((Test) c.newInstance(data, methodName));
560	+	return suite;
561	+	} catch (Exception e) {
562	+	throw new Error(e);
563	+	}
564	+	}
565	+
566	+	/**
567	+	* Returns junit-style testSuite for the jdk8 extension of the
568	+	* given test class, but parameterized by passing extra data to
569	+	* each test.  Uses reflection to allow compilation in jdk7.
570	+	*/
571	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
572	+	(Class<? extends JSR166TestCase> testClass,
573	+	Class<ExtraData> dataClass,
574	+	ExtraData data) {
575	+	if (atLeastJava8()) {
576	+	String name = testClass.getName();
577	+	String name8 = name.replaceAll("Test$", "8Test");
578	+	if (name.equals(name8)) throw new Error(name);
579	+	try {
580	+	return (Test)
581	+	Class.forName(name8)
582	+	.getMethod("testSuite", new Class[] { dataClass })
583	+	.invoke(null, data);
584	+	} catch (Exception e) {
585	+	throw new Error(e);
586	+	}
587	+	} else {
588	+	return new TestSuite();
589	+	}
590	+	}
591	+
592	+	// Delays for timing-dependent tests, in milliseconds.
593
594		public static long SHORT_DELAY_MS;
595		public static long SMALL_DELAY_MS;
596		public static long MEDIUM_DELAY_MS;
597		public static long LONG_DELAY_MS;
598
254	–
599		/**
600	<	* Returns the shortest timed delay. This could
601	<	* be reimplemented to use for example a Property.
600	>	* Returns the shortest timed delay. This can be scaled up for
601	>	* slow machines using the jsr166.delay.factor system property,
602	>	* or via jtreg's -timeoutFactor: flag.
603	>	* http://openjdk.java.net/jtreg/command-help.html
604		*/
605		protected long getShortDelay() {
606	<	return 50;
606	>	return (long) (50 * delayFactor);
607		}
608
609		/**
#	Line 279 | Line 625 | public class JSR166TestCase extends Test
625		}
626
627		/**
628	<	* Returns a new Date instance representing a time delayMillis
629	<	* milliseconds in the future.
628	>	* Returns a new Date instance representing a time at least
629	>	* delayMillis milliseconds in the future.
630		*/
631		Date delayedDate(long delayMillis) {
632	<	return new Date(new Date().getTime() + delayMillis);
632	>	// Add 1 because currentTimeMillis is known to round into the past.
633	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
634		}
635
636		/**
#	Line 299 | Line 646 | public class JSR166TestCase extends Test
646		* the same test have no effect.
647		*/
648		public void threadRecordFailure(Throwable t) {
649	+	System.err.println(t);
650	+	dumpTestThreads();
651		threadFailure.compareAndSet(null, t);
652		}
653
#	Line 306 | Line 655 | public class JSR166TestCase extends Test
655		setDelays();
656		}
657
658	+	void tearDownFail(String format, Object... args) {
659	+	String msg = toString() + ": " + String.format(format, args);
660	+	System.err.println(msg);
661	+	dumpTestThreads();
662	+	throw new AssertionFailedError(msg);
663	+	}
664	+
665		/**
666	+	* Extra checks that get done for all test cases.
667	+	*
668		* Triggers test case failure if any thread assertions have failed,
669		* by rethrowing, in the test harness thread, any exception recorded
670		* earlier by threadRecordFailure.
671	+	*
672	+	* Triggers test case failure if interrupt status is set in the main thread.
673		*/
674		public void tearDown() throws Exception {
675		Throwable t = threadFailure.getAndSet(null);
#	Line 327 | Line 687 | public class JSR166TestCase extends Test
687		throw afe;
688		}
689		}
690	+
691	+	if (Thread.interrupted())
692	+	tearDownFail("interrupt status set in main thread");
693	+
694	+	checkForkJoinPoolThreadLeaks();
695	+	}
696	+
697	+	/**
698	+	* Finds missing PoolCleaners
699	+	*/
700	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
701	+	Thread[] survivors = new Thread[7];
702	+	int count = Thread.enumerate(survivors);
703	+	for (int i = 0; i < count; i++) {
704	+	Thread thread = survivors[i];
705	+	String name = thread.getName();
706	+	if (name.startsWith("ForkJoinPool-")) {
707	+	// give thread some time to terminate
708	+	thread.join(LONG_DELAY_MS);
709	+	if (thread.isAlive())
710	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
711	+	thread);
712	+	}
713	+	}
714	+
715	+	if (!ForkJoinPool.commonPool()
716	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
717	+	tearDownFail("ForkJoin common pool thread stuck");
718		}
719
720		/**
#	Line 339 | Line 727 | public class JSR166TestCase extends Test
727		fail(reason);
728		} catch (AssertionFailedError t) {
729		threadRecordFailure(t);
730	<	fail(reason);
730	>	throw t;
731		}
732		}
733
#	Line 407 | Line 795 | public class JSR166TestCase extends Test
795		public void threadAssertEquals(Object x, Object y) {
796		try {
797		assertEquals(x, y);
798	<	} catch (AssertionFailedError t) {
799	<	threadRecordFailure(t);
800	<	throw t;
801	<	} catch (Throwable t) {
802	<	threadUnexpectedException(t);
798	>	} catch (AssertionFailedError fail) {
799	>	threadRecordFailure(fail);
800	>	throw fail;
801	>	} catch (Throwable fail) {
802	>	threadUnexpectedException(fail);
803		}
804		}
805
#	Line 423 | Line 811 | public class JSR166TestCase extends Test
811		public void threadAssertSame(Object x, Object y) {
812		try {
813		assertSame(x, y);
814	<	} catch (AssertionFailedError t) {
815	<	threadRecordFailure(t);
816	<	throw t;
814	>	} catch (AssertionFailedError fail) {
815	>	threadRecordFailure(fail);
816	>	throw fail;
817		}
818		}
819
#	Line 466 | Line 854 | public class JSR166TestCase extends Test
854		/**
855		* Delays, via Thread.sleep, for the given millisecond delay, but
856		* if the sleep is shorter than specified, may re-sleep or yield
857	<	* until time elapses.
857	>	* until time elapses.  Ensures that the given time, as measured
858	>	* by System.nanoTime(), has elapsed.
859		*/
860		static void delay(long millis) throws InterruptedException {
861	<	long startTime = System.nanoTime();
862	<	long ns = millis * 1000 * 1000;
863	<	for (;;) {
861	>	long nanos = millis * (1000 * 1000);
862	>	final long wakeupTime = System.nanoTime() + nanos;
863	>	do {
864		if (millis > 0L)
865		Thread.sleep(millis);
866		else // too short to sleep
867		Thread.yield();
868	<	long d = ns - (System.nanoTime() - startTime);
869	<	if (d > 0L)
870	<	millis = d / (1000 * 1000);
871	<	else
872	<	break;
868	>	nanos = wakeupTime - System.nanoTime();
869	>	millis = nanos / (1000 * 1000);
870	>	} while (nanos >= 0L);
871	>	}
872	>
873	>	/**
874	>	* Allows use of try-with-resources with per-test thread pools.
875	>	*/
876	>	class PoolCleaner implements AutoCloseable {
877	>	private final ExecutorService pool;
878	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
879	>	public void close() { joinPool(pool); }
880	>	}
881	>
882	>	/**
883	>	* An extension of PoolCleaner that has an action to release the pool.
884	>	*/
885	>	class PoolCleanerWithReleaser extends PoolCleaner {
886	>	private final Runnable releaser;
887	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
888	>	super(pool);
889	>	this.releaser = releaser;
890	>	}
891	>	public void close() {
892	>	try {
893	>	releaser.run();
894	>	} finally {
895	>	super.close();
896	>	}
897		}
898		}
899
900	+	PoolCleaner cleaner(ExecutorService pool) {
901	+	return new PoolCleaner(pool);
902	+	}
903	+
904	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
905	+	return new PoolCleanerWithReleaser(pool, releaser);
906	+	}
907	+
908	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
909	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
910	+	}
911	+
912	+	Runnable releaser(final CountDownLatch latch) {
913	+	return new Runnable() { public void run() {
914	+	do { latch.countDown(); }
915	+	while (latch.getCount() > 0);
916	+	}};
917	+	}
918	+
919	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
920	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
921	+	}
922	+
923	+	Runnable releaser(final AtomicBoolean flag) {
924	+	return new Runnable() { public void run() { flag.set(true); }};
925	+	}
926	+
927		/**
928		* Waits out termination of a thread pool or fails doing so.
929		*/
930	<	void joinPool(ExecutorService exec) {
930	>	void joinPool(ExecutorService pool) {
931		try {
932	<	exec.shutdown();
933	<	assertTrue("ExecutorService did not terminate in a timely manner",
934	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
932	>	pool.shutdown();
933	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
934	>	try {
935	>	threadFail("ExecutorService " + pool +
936	>	" did not terminate in a timely manner");
937	>	} finally {
938	>	// last resort, for the benefit of subsequent tests
939	>	pool.shutdownNow();
940	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
941	>	}
942	>	}
943		} catch (SecurityException ok) {
944		// Allowed in case test doesn't have privs
945	<	} catch (InterruptedException ie) {
946	<	fail("Unexpected InterruptedException");
945	>	} catch (InterruptedException fail) {
946	>	threadFail("Unexpected InterruptedException");
947		}
948		}
949
950	+	/** Like Runnable, but with the freedom to throw anything */
951	+	interface Action { public void run() throws Throwable; }
952	+
953	+	/**
954	+	* Runs all the given actions in parallel, failing if any fail.
955	+	* Useful for running multiple variants of tests that are
956	+	* necessarily individually slow because they must block.
957	+	*/
958	+	void testInParallel(Action ... actions) {
959	+	ExecutorService pool = Executors.newCachedThreadPool();
960	+	try (PoolCleaner cleaner = cleaner(pool)) {
961	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
962	+	for (final Action action : actions)
963	+	futures.add(pool.submit(new CheckedRunnable() {
964	+	public void realRun() throws Throwable { action.run();}}));
965	+	for (Future<?> future : futures)
966	+	try {
967	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
968	+	} catch (ExecutionException ex) {
969	+	threadUnexpectedException(ex.getCause());
970	+	} catch (Exception ex) {
971	+	threadUnexpectedException(ex);
972	+	}
973	+	}
974	+	}
975	+
976	+	/**
977	+	* A debugging tool to print stack traces of most threads, as jstack does.
978	+	* Uninteresting threads are filtered out.
979	+	*/
980	+	static void dumpTestThreads() {
981	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
982	+	System.err.println("------ stacktrace dump start ------");
983	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
984	+	String name = info.getThreadName();
985	+	if ("Signal Dispatcher".equals(name))
986	+	continue;
987	+	if ("Reference Handler".equals(name)
988	+	&& info.getLockName().startsWith("java.lang.ref.Reference$Lock"))
989	+	continue;
990	+	if ("Finalizer".equals(name)
991	+	&& info.getLockName().startsWith("java.lang.ref.ReferenceQueue$Lock"))
992	+	continue;
993	+	if ("checkForWedgedTest".equals(name))
994	+	continue;
995	+	System.err.print(info);
996	+	}
997	+	System.err.println("------ stacktrace dump end ------");
998	+	}
999	+
1000		/**
1001		* Checks that thread does not terminate within the default
1002		* millisecond delay of {@code timeoutMillis()}.
#	Line 515 | Line 1013 | public class JSR166TestCase extends Test
1013		// No need to optimize the failing case via Thread.join.
1014		delay(millis);
1015		assertTrue(thread.isAlive());
1016	<	} catch (InterruptedException ie) {
1017	<	fail("Unexpected InterruptedException");
1016	>	} catch (InterruptedException fail) {
1017	>	threadFail("Unexpected InterruptedException");
1018	>	}
1019	>	}
1020	>
1021	>	/**
1022	>	* Checks that the threads do not terminate within the default
1023	>	* millisecond delay of {@code timeoutMillis()}.
1024	>	*/
1025	>	void assertThreadsStayAlive(Thread... threads) {
1026	>	assertThreadsStayAlive(timeoutMillis(), threads);
1027	>	}
1028	>
1029	>	/**
1030	>	* Checks that the threads do not terminate within the given millisecond delay.
1031	>	*/
1032	>	void assertThreadsStayAlive(long millis, Thread... threads) {
1033	>	try {
1034	>	// No need to optimize the failing case via Thread.join.
1035	>	delay(millis);
1036	>	for (Thread thread : threads)
1037	>	assertTrue(thread.isAlive());
1038	>	} catch (InterruptedException fail) {
1039	>	threadFail("Unexpected InterruptedException");
1040		}
1041		}
1042
#	Line 537 | Line 1057 | public class JSR166TestCase extends Test
1057		future.get(timeoutMillis, MILLISECONDS);
1058		shouldThrow();
1059		} catch (TimeoutException success) {
1060	<	} catch (Exception e) {
1061	<	threadUnexpectedException(e);
1060	>	} catch (Exception fail) {
1061	>	threadUnexpectedException(fail);
1062		} finally { future.cancel(true); }
1063		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1064		}
#	Line 582 | Line 1102 | public class JSR166TestCase extends Test
1102		public static final Integer m6  = new Integer(-6);
1103		public static final Integer m10 = new Integer(-10);
1104
585	–
1105		/**
1106		* Runs Runnable r with a security policy that permits precisely
1107		* the specified permissions.  If there is no current security
#	Line 594 | Line 1113 | public class JSR166TestCase extends Test
1113		SecurityManager sm = System.getSecurityManager();
1114		if (sm == null) {
1115		r.run();
1116	+	}
1117	+	runWithSecurityManagerWithPermissions(r, permissions);
1118	+	}
1119	+
1120	+	/**
1121	+	* Runs Runnable r with a security policy that permits precisely
1122	+	* the specified permissions.  If there is no current security
1123	+	* manager, a temporary one is set for the duration of the
1124	+	* Runnable.  We require that any security manager permit
1125	+	* getPolicy/setPolicy.
1126	+	*/
1127	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1128	+	Permission... permissions) {
1129	+	SecurityManager sm = System.getSecurityManager();
1130	+	if (sm == null) {
1131		Policy savedPolicy = Policy.getPolicy();
1132		try {
1133		Policy.setPolicy(permissivePolicy());
1134		System.setSecurityManager(new SecurityManager());
1135	<	runWithPermissions(r, permissions);
1135	>	runWithSecurityManagerWithPermissions(r, permissions);
1136		} finally {
1137		System.setSecurityManager(null);
1138		Policy.setPolicy(savedPolicy);
#	Line 646 | Line 1180 | public class JSR166TestCase extends Test
1180		return perms.implies(p);
1181		}
1182		public void refresh() {}
1183	+	public String toString() {
1184	+	List<Permission> ps = new ArrayList<Permission>();
1185	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1186	+	ps.add(e.nextElement());
1187	+	return "AdjustablePolicy with permissions " + ps;
1188	+	}
1189		}
1190
1191		/**
#	Line 674 | Line 1214 | public class JSR166TestCase extends Test
1214		void sleep(long millis) {
1215		try {
1216		delay(millis);
1217	<	} catch (InterruptedException ie) {
1217	>	} catch (InterruptedException fail) {
1218		AssertionFailedError afe =
1219		new AssertionFailedError("Unexpected InterruptedException");
1220	<	afe.initCause(ie);
1220	>	afe.initCause(fail);
1221		throw afe;
1222		}
1223		}
1224
1225		/**
1226	<	* Waits up to the specified number of milliseconds for the given
1226	>	* Spin-waits up to the specified number of milliseconds for the given
1227		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1228		*/
1229		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1230	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
691	<	long t0 = System.nanoTime();
1230	>	long startTime = System.nanoTime();
1231		for (;;) {
1232		Thread.State s = thread.getState();
1233		if (s == Thread.State.BLOCKED ||
#	Line 697 | Line 1236 | public class JSR166TestCase extends Test
1236		return;
1237		else if (s == Thread.State.TERMINATED)
1238		fail("Unexpected thread termination");
1239	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1239	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1240		threadAssertTrue(thread.isAlive());
1241		return;
1242		}
#	Line 716 | Line 1255 | public class JSR166TestCase extends Test
1255		/**
1256		* Returns the number of milliseconds since time given by
1257		* startNanoTime, which must have been previously returned from a
1258	<	* call to {@link System.nanoTime()}.
1258	>	* call to {@link System#nanoTime()}.
1259		*/
1260	<	long millisElapsedSince(long startNanoTime) {
1260	>	static long millisElapsedSince(long startNanoTime) {
1261		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1262		}
1263
1264	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1265	+	//         long startTime = System.nanoTime();
1266	+	//         try {
1267	+	//             r.run();
1268	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1269	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1270	+	//             throw new AssertionFailedError("did not return promptly");
1271	+	//     }
1272	+
1273	+	//     void assertTerminatesPromptly(Runnable r) {
1274	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1275	+	//     }
1276	+
1277	+	/**
1278	+	* Checks that timed f.get() returns the expected value, and does not
1279	+	* wait for the timeout to elapse before returning.
1280	+	*/
1281	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1282	+	long startTime = System.nanoTime();
1283	+	try {
1284	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1285	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1286	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1287	+	throw new AssertionFailedError("timed get did not return promptly");
1288	+	}
1289	+
1290	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1291	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1292	+	}
1293	+
1294		/**
1295		* Returns a new started daemon Thread running the given runnable.
1296		*/
#	Line 740 | Line 1309 | public class JSR166TestCase extends Test
1309		void awaitTermination(Thread t, long timeoutMillis) {
1310		try {
1311		t.join(timeoutMillis);
1312	<	} catch (InterruptedException ie) {
1313	<	threadUnexpectedException(ie);
1312	>	} catch (InterruptedException fail) {
1313	>	threadUnexpectedException(fail);
1314		} finally {
1315		if (t.getState() != Thread.State.TERMINATED) {
1316		t.interrupt();
1317	<	fail("Test timed out");
1317	>	threadFail("timed out waiting for thread to terminate");
1318		}
1319		}
1320		}
#	Line 767 | Line 1336 | public class JSR166TestCase extends Test
1336		public final void run() {
1337		try {
1338		realRun();
1339	<	} catch (Throwable t) {
1340	<	threadUnexpectedException(t);
1339	>	} catch (Throwable fail) {
1340	>	threadUnexpectedException(fail);
1341		}
1342		}
1343		}
#	Line 822 | Line 1391 | public class JSR166TestCase extends Test
1391		threadShouldThrow("InterruptedException");
1392		} catch (InterruptedException success) {
1393		threadAssertFalse(Thread.interrupted());
1394	<	} catch (Throwable t) {
1395	<	threadUnexpectedException(t);
1394	>	} catch (Throwable fail) {
1395	>	threadUnexpectedException(fail);
1396		}
1397		}
1398		}
#	Line 834 | Line 1403 | public class JSR166TestCase extends Test
1403		public final T call() {
1404		try {
1405		return realCall();
1406	<	} catch (Throwable t) {
1407	<	threadUnexpectedException(t);
1406	>	} catch (Throwable fail) {
1407	>	threadUnexpectedException(fail);
1408		return null;
1409		}
1410		}
#	Line 852 | Line 1421 | public class JSR166TestCase extends Test
1421		return result;
1422		} catch (InterruptedException success) {
1423		threadAssertFalse(Thread.interrupted());
1424	<	} catch (Throwable t) {
1425	<	threadUnexpectedException(t);
1424	>	} catch (Throwable fail) {
1425	>	threadUnexpectedException(fail);
1426		}
1427		return null;
1428		}
#	Line 870 | Line 1439 | public class JSR166TestCase extends Test
1439		public static final String TEST_STRING = "a test string";
1440
1441		public static class StringTask implements Callable<String> {
1442	<	public String call() { return TEST_STRING; }
1442	>	final String value;
1443	>	public StringTask() { this(TEST_STRING); }
1444	>	public StringTask(String value) { this.value = value; }
1445	>	public String call() { return value; }
1446		}
1447
1448		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 883 | Line 1455 | public class JSR166TestCase extends Test
1455		}};
1456		}
1457
1458	<	public Runnable awaiter(final CountDownLatch latch) {
1458	>	public Runnable countDowner(final CountDownLatch latch) {
1459		return new CheckedRunnable() {
1460		public void realRun() throws InterruptedException {
1461	<	await(latch);
1461	>	latch.countDown();
1462		}};
1463		}
1464
1465	+	class LatchAwaiter extends CheckedRunnable {
1466	+	static final int NEW = 0;
1467	+	static final int RUNNING = 1;
1468	+	static final int DONE = 2;
1469	+	final CountDownLatch latch;
1470	+	int state = NEW;
1471	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1472	+	public void realRun() throws InterruptedException {
1473	+	state = 1;
1474	+	await(latch);
1475	+	state = 2;
1476	+	}
1477	+	}
1478	+
1479	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1480	+	return new LatchAwaiter(latch);
1481	+	}
1482	+
1483	+	public void await(CountDownLatch latch, long timeoutMillis) {
1484	+	try {
1485	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1486	+	fail("timed out waiting for CountDownLatch for "
1487	+	+ (timeoutMillis/1000) + " sec");
1488	+	} catch (Throwable fail) {
1489	+	threadUnexpectedException(fail);
1490	+	}
1491	+	}
1492	+
1493		public void await(CountDownLatch latch) {
1494	+	await(latch, LONG_DELAY_MS);
1495	+	}
1496	+
1497	+	public void await(Semaphore semaphore) {
1498		try {
1499	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1500	<	} catch (Throwable t) {
1501	<	threadUnexpectedException(t);
1499	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1500	>	fail("timed out waiting for Semaphore for "
1501	>	+ (LONG_DELAY_MS/1000) + " sec");
1502	>	} catch (Throwable fail) {
1503	>	threadUnexpectedException(fail);
1504		}
1505		}
1506
#	Line 1085 | Line 1691 | public class JSR166TestCase extends Test
1691		public abstract class CheckedRecursiveAction extends RecursiveAction {
1692		protected abstract void realCompute() throws Throwable;
1693
1694	<	public final void compute() {
1694	>	@Override protected final void compute() {
1695		try {
1696		realCompute();
1697	<	} catch (Throwable t) {
1698	<	threadUnexpectedException(t);
1697	>	} catch (Throwable fail) {
1698	>	threadUnexpectedException(fail);
1699		}
1700		}
1701		}
#	Line 1100 | Line 1706 | public class JSR166TestCase extends Test
1706		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1707		protected abstract T realCompute() throws Throwable;
1708
1709	<	public final T compute() {
1709	>	@Override protected final T compute() {
1710		try {
1711		return realCompute();
1712	<	} catch (Throwable t) {
1713	<	threadUnexpectedException(t);
1712	>	} catch (Throwable fail) {
1713	>	threadUnexpectedException(fail);
1714		return null;
1715		}
1716		}
#	Line 1119 | Line 1725 | public class JSR166TestCase extends Test
1725		}
1726
1727		/**
1728	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1729	<	* of throwing checked exceptions.
1728	>	* A CyclicBarrier that uses timed await and fails with
1729	>	* AssertionFailedErrors instead of throwing checked exceptions.
1730		*/
1731		public class CheckedBarrier extends CyclicBarrier {
1732		public CheckedBarrier(int parties) { super(parties); }
1733
1734		public int await() {
1735		try {
1736	<	return super.await();
1737	<	} catch (Exception e) {
1736	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1737	>	} catch (TimeoutException timedOut) {
1738	>	throw new AssertionFailedError("timed out");
1739	>	} catch (Exception fail) {
1740		AssertionFailedError afe =
1741	<	new AssertionFailedError("Unexpected exception: " + e);
1742	<	afe.initCause(e);
1741	>	new AssertionFailedError("Unexpected exception: " + fail);
1742	>	afe.initCause(fail);
1743		throw afe;
1744		}
1745		}
#	Line 1159 | Line 1767 | public class JSR166TestCase extends Test
1767		q.remove();
1768		shouldThrow();
1769		} catch (NoSuchElementException success) {}
1770	<	} catch (InterruptedException ie) {
1163	<	threadUnexpectedException(ie);
1164	<	}
1770	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1771		}
1772
1773	<	@SuppressWarnings("unchecked")
1774	<	<T> T serialClone(T o) {
1773	>	void assertSerialEquals(Object x, Object y) {
1774	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1775	>	}
1776	>
1777	>	void assertNotSerialEquals(Object x, Object y) {
1778	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1779	>	}
1780	>
1781	>	byte[] serialBytes(Object o) {
1782		try {
1783		ByteArrayOutputStream bos = new ByteArrayOutputStream();
1784		ObjectOutputStream oos = new ObjectOutputStream(bos);
1785		oos.writeObject(o);
1786		oos.flush();
1787		oos.close();
1788	<	ByteArrayInputStream bin =
1789	<	new ByteArrayInputStream(bos.toByteArray());
1790	<	ObjectInputStream ois = new ObjectInputStream(bin);
1791	<	return (T) ois.readObject();
1792	<	} catch (Throwable t) {
1793	<	threadUnexpectedException(t);
1788	>	return bos.toByteArray();
1789	>	} catch (Throwable fail) {
1790	>	threadUnexpectedException(fail);
1791	>	return new byte[0];
1792	>	}
1793	>	}
1794	>
1795	>	@SuppressWarnings("unchecked")
1796	>	<T> T serialClone(T o) {
1797	>	try {
1798	>	ObjectInputStream ois = new ObjectInputStream
1799	>	(new ByteArrayInputStream(serialBytes(o)));
1800	>	T clone = (T) ois.readObject();
1801	>	assertSame(o.getClass(), clone.getClass());
1802	>	return clone;
1803	>	} catch (Throwable fail) {
1804	>	threadUnexpectedException(fail);
1805		return null;
1806		}
1807		}
1808	+
1809	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1810	+	Runnable... throwingActions) {
1811	+	for (Runnable throwingAction : throwingActions) {
1812	+	boolean threw = false;
1813	+	try { throwingAction.run(); }
1814	+	catch (Throwable t) {
1815	+	threw = true;
1816	+	if (!expectedExceptionClass.isInstance(t)) {
1817	+	AssertionFailedError afe =
1818	+	new AssertionFailedError
1819	+	("Expected " + expectedExceptionClass.getName() +
1820	+	", got " + t.getClass().getName());
1821	+	afe.initCause(t);
1822	+	threadUnexpectedException(afe);
1823	+	}
1824	+	}
1825	+	if (!threw)
1826	+	shouldThrow(expectedExceptionClass.getName());
1827	+	}
1828	+	}
1829	+
1830	+	public void assertIteratorExhausted(Iterator<?> it) {
1831	+	try {
1832	+	it.next();
1833	+	shouldThrow();
1834	+	} catch (NoSuchElementException success) {}
1835	+	assertFalse(it.hasNext());
1836	+	}
1837	+
1838	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1839	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1840	+	}
1841	+
1842	+	public Runnable runnableThrowing(final RuntimeException ex) {
1843	+	return new Runnable() { public void run() { throw ex; }};
1844	+	}
1845	+
1846	+	/** A reusable thread pool to be shared by tests. */
1847	+	static final ExecutorService cachedThreadPool =
1848	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1849	+	1000L, MILLISECONDS,
1850	+	new SynchronousQueue<Runnable>());
1851	+
1852		}

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