ViewVC Help

View File | Revision Log | Show Annotations | Download File | Root Listing

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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.116 by jsr166, Sun Jun 8 00:15:50 2014 UTC vs.
Revision 1.216 by jsr166, Wed Jan 4 06:09:58 2017 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 (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.management
23	>	* @run junit/othervm/timeout=1000
24	>	*      -Djsr166.testImplementationDetails=true
25	>	*      JSR166TestCase
26	>	* @run junit/othervm/timeout=1000
27	>	*      -Djsr166.testImplementationDetails=true
28	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
29	>	*      JSR166TestCase
30	>	* @run junit/othervm/timeout=1000
31	>	*      -Djsr166.testImplementationDetails=true
32	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
33	>	*      -Djava.util.secureRandomSeed=true
34	>	*      JSR166TestCase
35	>	*/
36	>
37	>	import static java.util.concurrent.TimeUnit.MILLISECONDS;
38	>	import static java.util.concurrent.TimeUnit.MINUTES;
39	>	import static java.util.concurrent.TimeUnit.NANOSECONDS;
40	>
41		import java.io.ByteArrayInputStream;
42		import java.io.ByteArrayOutputStream;
43		import java.io.ObjectInputStream;
44		import java.io.ObjectOutputStream;
45		import java.lang.management.ManagementFactory;
46		import java.lang.management.ThreadInfo;
47	+	import java.lang.management.ThreadMXBean;
48	+	import java.lang.reflect.Constructor;
49		import java.lang.reflect.Method;
50	+	import java.lang.reflect.Modifier;
51	+	import java.nio.file.Files;
52	+	import java.nio.file.Paths;
53	+	import java.security.CodeSource;
54	+	import java.security.Permission;
55	+	import java.security.PermissionCollection;
56	+	import java.security.Permissions;
57	+	import java.security.Policy;
58	+	import java.security.ProtectionDomain;
59	+	import java.security.SecurityPermission;
60		import java.util.ArrayList;
61		import java.util.Arrays;
62	+	import java.util.Collection;
63	+	import java.util.Collections;
64		import java.util.Date;
65		import java.util.Enumeration;
66	+	import java.util.Iterator;
67		import java.util.List;
68		import java.util.NoSuchElementException;
69		import java.util.PropertyPermission;
70	<	import java.util.concurrent.*;
70	>	import java.util.concurrent.BlockingQueue;
71	>	import java.util.concurrent.Callable;
72	>	import java.util.concurrent.CountDownLatch;
73	>	import java.util.concurrent.CyclicBarrier;
74	>	import java.util.concurrent.ExecutionException;
75	>	import java.util.concurrent.Executors;
76	>	import java.util.concurrent.ExecutorService;
77	>	import java.util.concurrent.ForkJoinPool;
78	>	import java.util.concurrent.Future;
79	>	import java.util.concurrent.RecursiveAction;
80	>	import java.util.concurrent.RecursiveTask;
81	>	import java.util.concurrent.RejectedExecutionHandler;
82	>	import java.util.concurrent.Semaphore;
83	>	import java.util.concurrent.SynchronousQueue;
84	>	import java.util.concurrent.ThreadFactory;
85	>	import java.util.concurrent.ThreadLocalRandom;
86	>	import java.util.concurrent.ThreadPoolExecutor;
87	>	import java.util.concurrent.TimeoutException;
88		import java.util.concurrent.atomic.AtomicBoolean;
89		import java.util.concurrent.atomic.AtomicReference;
90	<	import static java.util.concurrent.TimeUnit.MILLISECONDS;
28	<	import static java.util.concurrent.TimeUnit.NANOSECONDS;
90	>	import java.util.regex.Matcher;
91		import java.util.regex.Pattern;
92	<	import java.security.CodeSource;
93	<	import java.security.Permission;
94	<	import java.security.PermissionCollection;
95	<	import java.security.Permissions;
96	<	import java.security.Policy;
97	<	import java.security.ProtectionDomain;
36	<	import java.security.SecurityPermission;
92	>
93	>	import junit.framework.AssertionFailedError;
94	>	import junit.framework.Test;
95	>	import junit.framework.TestCase;
96	>	import junit.framework.TestResult;
97	>	import junit.framework.TestSuite;
98
99		/**
100		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 45 | Line 106 | import java.security.SecurityPermission;
106		*
107		* <ol>
108		*
109	<	* <li> All assertions in code running in generated threads must use
109	>	* <li>All assertions in code running in generated threads must use
110		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
111		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
112		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
113		* particularly recommended) for other code to use these forms too.
114		* Only the most typically used JUnit assertion methods are defined
115	<	* this way, but enough to live with.</li>
115	>	* this way, but enough to live with.
116		*
117	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
117	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
118		* to invoke {@code super.setUp} and {@code super.tearDown} within
119		* them. These methods are used to clear and check for thread
120	<	* assertion failures.</li>
120	>	* assertion failures.
121		*
122		* <li>All delays and timeouts must use one of the constants {@code
123		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 67 | Line 128 | import java.security.SecurityPermission;
128		* is always discriminable as larger than SHORT and smaller than
129		* MEDIUM.  And so on. These constants are set to conservative values,
130		* but even so, if there is ever any doubt, they can all be increased
131	<	* in one spot to rerun tests on slower platforms.</li>
131	>	* in one spot to rerun tests on slower platforms.
132		*
133	<	* <li> All threads generated must be joined inside each test case
133	>	* <li>All threads generated must be joined inside each test case
134		* method (or {@code fail} to do so) before returning from the
135		* method. The {@code joinPool} method can be used to do this when
136	<	* using Executors.</li>
136	>	* using Executors.
137		*
138		* </ol>
139		*
140		* <p><b>Other notes</b>
141		* <ul>
142		*
143	<	* <li> Usually, there is one testcase method per JSR166 method
143	>	* <li>Usually, there is one testcase method per JSR166 method
144		* covering "normal" operation, and then as many exception-testing
145		* methods as there are exceptions the method can throw. Sometimes
146		* there are multiple tests per JSR166 method when the different
147		* "normal" behaviors differ significantly. And sometimes testcases
148	<	* cover multiple methods when they cannot be tested in
88	<	* isolation.</li>
148	>	* cover multiple methods when they cannot be tested in isolation.
149		*
150	<	* <li> The documentation style for testcases is to provide as javadoc
150	>	* <li>The documentation style for testcases is to provide as javadoc
151		* a simple sentence or two describing the property that the testcase
152		* method purports to test. The javadocs do not say anything about how
153	<	* the property is tested. To find out, read the code.</li>
153	>	* the property is tested. To find out, read the code.
154		*
155	<	* <li> These tests are "conformance tests", and do not attempt to
155	>	* <li>These tests are "conformance tests", and do not attempt to
156		* test throughput, latency, scalability or other performance factors
157		* (see the separate "jtreg" tests for a set intended to check these
158		* for the most central aspects of functionality.) So, most tests use
159		* the smallest sensible numbers of threads, collection sizes, etc
160	<	* needed to check basic conformance.</li>
160	>	* needed to check basic conformance.
161		*
162		* <li>The test classes currently do not declare inclusion in
163		* any particular package to simplify things for people integrating
164	<	* them in TCK test suites.</li>
164	>	* them in TCK test suites.
165		*
166	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
167	<	* runs all JSR166 unit tests.</li>
166	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
167	>	* runs all JSR166 unit tests.
168		*
169		* </ul>
170		*/
#	Line 116 | Line 176 | public class JSR166TestCase extends Test
176		Boolean.getBoolean("jsr166.expensiveTests");
177
178		/**
179	+	* If true, also run tests that are not part of the official tck
180	+	* because they test unspecified implementation details.
181	+	*/
182	+	protected static final boolean testImplementationDetails =
183	+	Boolean.getBoolean("jsr166.testImplementationDetails");
184	+
185	+	/**
186		* If true, report on stdout all "slow" tests, that is, ones that
187		* take more than profileThreshold milliseconds to execute.
188		*/
#	Line 136 | Line 203 | public class JSR166TestCase extends Test
203		Integer.getInteger("jsr166.runsPerTest", 1);
204
205		/**
206	+	* The number of repetitions of the test suite (for finding leaks?).
207	+	*/
208	+	private static final int suiteRuns =
209	+	Integer.getInteger("jsr166.suiteRuns", 1);
210	+
211	+	/**
212	+	* Returns the value of the system property, or NaN if not defined.
213	+	*/
214	+	private static float systemPropertyValue(String name) {
215	+	String floatString = System.getProperty(name);
216	+	if (floatString == null)
217	+	return Float.NaN;
218	+	try {
219	+	return Float.parseFloat(floatString);
220	+	} catch (NumberFormatException ex) {
221	+	throw new IllegalArgumentException(
222	+	String.format("Bad float value in system property %s=%s",
223	+	name, floatString));
224	+	}
225	+	}
226	+
227	+	/**
228	+	* The scaling factor to apply to standard delays used in tests.
229	+	* May be initialized from any of:
230	+	* - the "jsr166.delay.factor" system property
231	+	* - the "test.timeout.factor" system property (as used by jtreg)
232	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
233	+	* - hard-coded fuzz factor when using a known slowpoke VM
234	+	*/
235	+	private static final float delayFactor = delayFactor();
236	+
237	+	private static float delayFactor() {
238	+	float x;
239	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
240	+	return x;
241	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
242	+	return x;
243	+	String prop = System.getProperty("java.vm.version");
244	+	if (prop != null && prop.matches(".*debug.*"))
245	+	return 4.0f; // How much slower is fastdebug than product?!
246	+	return 1.0f;
247	+	}
248	+
249	+	public JSR166TestCase() { super(); }
250	+	public JSR166TestCase(String name) { super(name); }
251	+
252	+	/**
253		* A filter for tests to run, matching strings of the form
254		* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
255		* Usefully combined with jsr166.runsPerTest.
#	Line 147 | Line 261 | public class JSR166TestCase extends Test
261		return (regex == null) ? null : Pattern.compile(regex);
262		}
263
264	<	protected void runTest() throws Throwable {
264	>	// Instrumentation to debug very rare, but very annoying hung test runs.
265	>	static volatile TestCase currentTestCase;
266	>	// static volatile int currentRun = 0;
267	>	static {
268	>	Runnable checkForWedgedTest = new Runnable() { public void run() {
269	>	// Avoid spurious reports with enormous runsPerTest.
270	>	// A single test case run should never take more than 1 second.
271	>	// But let's cap it at the high end too ...
272	>	final int timeoutMinutes =
273	>	Math.min(15, Math.max(runsPerTest / 60, 1));
274	>	for (TestCase lastTestCase = currentTestCase;;) {
275	>	try { MINUTES.sleep(timeoutMinutes); }
276	>	catch (InterruptedException unexpected) { break; }
277	>	if (lastTestCase == currentTestCase) {
278	>	System.err.printf(
279	>	"Looks like we're stuck running test: %s%n",
280	>	lastTestCase);
281	>	//                     System.err.printf(
282	>	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
283	>	//                         lastTestCase, currentRun, runsPerTest);
284	>	//                     System.err.println("availableProcessors=" +
285	>	//                         Runtime.getRuntime().availableProcessors());
286	>	//                     System.err.printf("cpu model = %s%n", cpuModel());
287	>	dumpTestThreads();
288	>	// one stack dump is probably enough; more would be spam
289	>	break;
290	>	}
291	>	lastTestCase = currentTestCase;
292	>	}}};
293	>	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
294	>	thread.setDaemon(true);
295	>	thread.start();
296	>	}
297	>
298	>	//     public static String cpuModel() {
299	>	//         try {
300	>	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
301	>	//                 .matcher(new String(
302	>	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
303	>	//             matcher.find();
304	>	//             return matcher.group(1);
305	>	//         } catch (Exception ex) { return null; }
306	>	//     }
307	>
308	>	public void runBare() throws Throwable {
309	>	currentTestCase = this;
310		if (methodFilter == null
311	<	|| methodFilter.matcher(toString()).find()) {
312	<	for (int i = 0; i < runsPerTest; i++) {
313	<	if (profileTests)
314	<	runTestProfiled();
315	<	else
316	<	super.runTest();
317	<	}
311	>	|| methodFilter.matcher(toString()).find())
312	>	super.runBare();
313	>	}
314	>
315	>	protected void runTest() throws Throwable {
316	>	for (int i = 0; i < runsPerTest; i++) {
317	>	// currentRun = i;
318	>	if (profileTests)
319	>	runTestProfiled();
320	>	else
321	>	super.runTest();
322		}
323		}
324
325		protected void runTestProfiled() throws Throwable {
326	<	// Warmup run, notably to trigger all needed classloading.
327	<	super.runTest();
165	<	long t0 = System.nanoTime();
166	<	try {
326	>	for (int i = 0; i < 2; i++) {
327	>	long startTime = System.nanoTime();
328		super.runTest();
329	<	} finally {
330	<	long elapsedMillis = millisElapsedSince(t0);
331	<	if (elapsedMillis >= profileThreshold)
329	>	long elapsedMillis = millisElapsedSince(startTime);
330	>	if (elapsedMillis < profileThreshold)
331	>	break;
332	>	// Never report first run of any test; treat it as a
333	>	// warmup run, notably to trigger all needed classloading,
334	>	if (i > 0)
335		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
336		}
337		}
338
339		/**
340		* Runs all JSR166 unit tests using junit.textui.TestRunner.
177	–	* Optional command line arg provides the number of iterations to
178	–	* repeat running the tests.
341		*/
342		public static void main(String[] args) {
343	+	main(suite(), args);
344	+	}
345	+
346	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
347	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
348	+	long runTime;
349	+	public void startTest(Test test) {}
350	+	protected void printHeader(long runTime) {
351	+	this.runTime = runTime; // defer printing for later
352	+	}
353	+	protected void printFooter(TestResult result) {
354	+	if (result.wasSuccessful()) {
355	+	getWriter().println("OK (" + result.runCount() + " tests)"
356	+	+ "  Time: " + elapsedTimeAsString(runTime));
357	+	} else {
358	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
359	+	super.printFooter(result);
360	+	}
361	+	}
362	+	}
363	+
364	+	/**
365	+	* Returns a TestRunner that doesn't bother with unnecessary
366	+	* fluff, like printing a "." for each test case.
367	+	*/
368	+	static junit.textui.TestRunner newPithyTestRunner() {
369	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
370	+	runner.setPrinter(new PithyResultPrinter(System.out));
371	+	return runner;
372	+	}
373	+
374	+	/**
375	+	* Runs all unit tests in the given test suite.
376	+	* Actual behavior influenced by jsr166.* system properties.
377	+	*/
378	+	static void main(Test suite, String[] args) {
379		if (useSecurityManager) {
380		System.err.println("Setting a permissive security manager");
381		Policy.setPolicy(permissivePolicy());
382		System.setSecurityManager(new SecurityManager());
383		}
384	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
385	<
386	<	Test s = suite();
387	<	for (int i = 0; i < iters; ++i) {
190	<	junit.textui.TestRunner.run(s);
384	>	for (int i = 0; i < suiteRuns; i++) {
385	>	TestResult result = newPithyTestRunner().doRun(suite);
386	>	if (!result.wasSuccessful())
387	>	System.exit(1);
388		System.gc();
389		System.runFinalization();
390		}
194	–	System.exit(0);
391		}
392
393		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 242 | Line 438 | public class JSR166TestCase extends Test
438		public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
439		public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
440		public static boolean atLeastJava9() {
441	<	// As of 2014-05, java9 still uses 52.0 class file version
442	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
441	>	return JAVA_CLASS_VERSION >= 53.0
442	>	// As of 2015-09, java9 still uses 52.0 class file version
443	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
444	>	}
445	>	public static boolean atLeastJava10() {
446	>	return JAVA_CLASS_VERSION >= 54.0
447	>	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
448		}
449
450		/**
#	Line 265 | Line 466 | public class JSR166TestCase extends Test
466		AbstractQueuedLongSynchronizerTest.suite(),
467		ArrayBlockingQueueTest.suite(),
468		ArrayDequeTest.suite(),
469	+	ArrayListTest.suite(),
470		AtomicBooleanTest.suite(),
471		AtomicIntegerArrayTest.suite(),
472		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 287 | Line 489 | public class JSR166TestCase extends Test
489		CopyOnWriteArrayListTest.suite(),
490		CopyOnWriteArraySetTest.suite(),
491		CountDownLatchTest.suite(),
492	+	CountedCompleterTest.suite(),
493		CyclicBarrierTest.suite(),
494		DelayQueueTest.suite(),
495		EntryTest.suite(),
#	Line 315 | Line 518 | public class JSR166TestCase extends Test
518		TreeMapTest.suite(),
519		TreeSetTest.suite(),
520		TreeSubMapTest.suite(),
521	<	TreeSubSetTest.suite());
521	>	TreeSubSetTest.suite(),
522	>	VectorTest.suite());
523
524		// Java8+ test classes
525		if (atLeastJava8()) {
526		String[] java8TestClassNames = {
527	+	"ArrayDeque8Test",
528		"Atomic8Test",
529		"CompletableFutureTest",
530		"ConcurrentHashMap8Test",
531	<	"CountedCompleterTest",
531	>	"CountedCompleter8Test",
532		"DoubleAccumulatorTest",
533		"DoubleAdderTest",
534		"ForkJoinPool8Test",
535		"ForkJoinTask8Test",
536	+	"LinkedBlockingDeque8Test",
537	+	"LinkedBlockingQueue8Test",
538		"LongAccumulatorTest",
539		"LongAdderTest",
540		"SplittableRandomTest",
541		"StampedLockTest",
542	+	"SubmissionPublisherTest",
543		"ThreadLocalRandom8Test",
544	+	"TimeUnit8Test",
545		};
546		addNamedTestClasses(suite, java8TestClassNames);
547		}
#	Line 340 | Line 549 | public class JSR166TestCase extends Test
549		// Java9+ test classes
550		if (atLeastJava9()) {
551		String[] java9TestClassNames = {
552	<	"ThreadPoolExecutor9Test",
552	>	"AtomicBoolean9Test",
553	>	"AtomicInteger9Test",
554	>	"AtomicIntegerArray9Test",
555	>	"AtomicLong9Test",
556	>	"AtomicLongArray9Test",
557	>	"AtomicReference9Test",
558	>	"AtomicReferenceArray9Test",
559	>	"ExecutorCompletionService9Test",
560		};
561		addNamedTestClasses(suite, java9TestClassNames);
562		}
#	Line 348 | Line 564 | public class JSR166TestCase extends Test
564		return suite;
565		}
566
567	+	/** Returns list of junit-style test method names in given class. */
568	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
569	+	Method[] methods = testClass.getDeclaredMethods();
570	+	ArrayList<String> names = new ArrayList<>(methods.length);
571	+	for (Method method : methods) {
572	+	if (method.getName().startsWith("test")
573	+	&& Modifier.isPublic(method.getModifiers())
574	+	// method.getParameterCount() requires jdk8+
575	+	&& method.getParameterTypes().length == 0) {
576	+	names.add(method.getName());
577	+	}
578	+	}
579	+	return names;
580	+	}
581	+
582	+	/**
583	+	* Returns junit-style testSuite for the given test class, but
584	+	* parameterized by passing extra data to each test.
585	+	*/
586	+	public static <ExtraData> Test parameterizedTestSuite
587	+	(Class<? extends JSR166TestCase> testClass,
588	+	Class<ExtraData> dataClass,
589	+	ExtraData data) {
590	+	try {
591	+	TestSuite suite = new TestSuite();
592	+	Constructor c =
593	+	testClass.getDeclaredConstructor(dataClass, String.class);
594	+	for (String methodName : testMethodNames(testClass))
595	+	suite.addTest((Test) c.newInstance(data, methodName));
596	+	return suite;
597	+	} catch (Exception e) {
598	+	throw new Error(e);
599	+	}
600	+	}
601	+
602	+	/**
603	+	* Returns junit-style testSuite for the jdk8 extension of the
604	+	* given test class, but parameterized by passing extra data to
605	+	* each test.  Uses reflection to allow compilation in jdk7.
606	+	*/
607	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
608	+	(Class<? extends JSR166TestCase> testClass,
609	+	Class<ExtraData> dataClass,
610	+	ExtraData data) {
611	+	if (atLeastJava8()) {
612	+	String name = testClass.getName();
613	+	String name8 = name.replaceAll("Test$", "8Test");
614	+	if (name.equals(name8)) throw new Error(name);
615	+	try {
616	+	return (Test)
617	+	Class.forName(name8)
618	+	.getMethod("testSuite", new Class[] { dataClass })
619	+	.invoke(null, data);
620	+	} catch (Exception e) {
621	+	throw new Error(e);
622	+	}
623	+	} else {
624	+	return new TestSuite();
625	+	}
626	+	}
627	+
628		// Delays for timing-dependent tests, in milliseconds.
629
630		public static long SHORT_DELAY_MS;
#	Line 356 | Line 633 | public class JSR166TestCase extends Test
633		public static long LONG_DELAY_MS;
634
635		/**
636	<	* Returns the shortest timed delay. This could
637	<	* be reimplemented to use for example a Property.
636	>	* Returns the shortest timed delay. This can be scaled up for
637	>	* slow machines using the jsr166.delay.factor system property,
638	>	* or via jtreg's -timeoutFactor: flag.
639	>	* http://openjdk.java.net/jtreg/command-help.html
640		*/
641		protected long getShortDelay() {
642	<	return 50;
642	>	return (long) (50 * delayFactor);
643		}
644
645		/**
#	Line 382 | Line 661 | public class JSR166TestCase extends Test
661		}
662
663		/**
664	<	* Returns a new Date instance representing a time delayMillis
665	<	* milliseconds in the future.
664	>	* Returns a new Date instance representing a time at least
665	>	* delayMillis milliseconds in the future.
666		*/
667		Date delayedDate(long delayMillis) {
668	<	return new Date(System.currentTimeMillis() + delayMillis);
668	>	// Add 1 because currentTimeMillis is known to round into the past.
669	>	return new Date(System.currentTimeMillis() + delayMillis + 1);
670		}
671
672		/**
673		* The first exception encountered if any threadAssertXXX method fails.
674		*/
675		private final AtomicReference<Throwable> threadFailure
676	<	= new AtomicReference<Throwable>(null);
676	>	= new AtomicReference<>(null);
677
678		/**
679		* Records an exception so that it can be rethrown later in the test
#	Line 402 | Line 682 | public class JSR166TestCase extends Test
682		* the same test have no effect.
683		*/
684		public void threadRecordFailure(Throwable t) {
685	+	System.err.println(t);
686	+	dumpTestThreads();
687		threadFailure.compareAndSet(null, t);
688		}
689
#	Line 409 | Line 691 | public class JSR166TestCase extends Test
691		setDelays();
692		}
693
694	+	void tearDownFail(String format, Object... args) {
695	+	String msg = toString() + ": " + String.format(format, args);
696	+	System.err.println(msg);
697	+	dumpTestThreads();
698	+	throw new AssertionFailedError(msg);
699	+	}
700	+
701		/**
702		* Extra checks that get done for all test cases.
703		*
#	Line 436 | Line 725 | public class JSR166TestCase extends Test
725		}
726
727		if (Thread.interrupted())
728	<	throw new AssertionFailedError("interrupt status set in main thread");
728	>	tearDownFail("interrupt status set in main thread");
729
730		checkForkJoinPoolThreadLeaks();
731		}
732
733		/**
734	<	* Find missing try { ... } finally { joinPool(e); }
734	>	* Finds missing PoolCleaners
735		*/
736		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
737	<	Thread[] survivors = new Thread[5];
737	>	Thread[] survivors = new Thread[7];
738		int count = Thread.enumerate(survivors);
739		for (int i = 0; i < count; i++) {
740		Thread thread = survivors[i];
#	Line 453 | Line 742 | public class JSR166TestCase extends Test
742		if (name.startsWith("ForkJoinPool-")) {
743		// give thread some time to terminate
744		thread.join(LONG_DELAY_MS);
745	<	if (!thread.isAlive()) continue;
746	<	thread.stop();
747	<	throw new AssertionFailedError
459	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
460	<	toString(), name));
745	>	if (thread.isAlive())
746	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
747	>	thread);
748		}
749		}
750	+
751	+	if (!ForkJoinPool.commonPool()
752	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
753	+	tearDownFail("ForkJoin common pool thread stuck");
754		}
755
756		/**
#	Line 472 | Line 763 | public class JSR166TestCase extends Test
763		fail(reason);
764		} catch (AssertionFailedError t) {
765		threadRecordFailure(t);
766	<	fail(reason);
766	>	throw t;
767		}
768		}
769
#	Line 540 | Line 831 | public class JSR166TestCase extends Test
831		public void threadAssertEquals(Object x, Object y) {
832		try {
833		assertEquals(x, y);
834	<	} catch (AssertionFailedError t) {
835	<	threadRecordFailure(t);
836	<	throw t;
837	<	} catch (Throwable t) {
838	<	threadUnexpectedException(t);
834	>	} catch (AssertionFailedError fail) {
835	>	threadRecordFailure(fail);
836	>	throw fail;
837	>	} catch (Throwable fail) {
838	>	threadUnexpectedException(fail);
839		}
840		}
841
#	Line 556 | Line 847 | public class JSR166TestCase extends Test
847		public void threadAssertSame(Object x, Object y) {
848		try {
849		assertSame(x, y);
850	<	} catch (AssertionFailedError t) {
851	<	threadRecordFailure(t);
852	<	throw t;
850	>	} catch (AssertionFailedError fail) {
851	>	threadRecordFailure(fail);
852	>	throw fail;
853		}
854		}
855
#	Line 599 | Line 890 | public class JSR166TestCase extends Test
890		/**
891		* Delays, via Thread.sleep, for the given millisecond delay, but
892		* if the sleep is shorter than specified, may re-sleep or yield
893	<	* until time elapses.
893	>	* until time elapses.  Ensures that the given time, as measured
894	>	* by System.nanoTime(), has elapsed.
895		*/
896		static void delay(long millis) throws InterruptedException {
897	<	long startTime = System.nanoTime();
898	<	long ns = millis * 1000 * 1000;
899	<	for (;;) {
897	>	long nanos = millis * (1000 * 1000);
898	>	final long wakeupTime = System.nanoTime() + nanos;
899	>	do {
900		if (millis > 0L)
901		Thread.sleep(millis);
902		else // too short to sleep
903		Thread.yield();
904	<	long d = ns - (System.nanoTime() - startTime);
905	<	if (d > 0L)
906	<	millis = d / (1000 * 1000);
907	<	else
908	<	break;
904	>	nanos = wakeupTime - System.nanoTime();
905	>	millis = nanos / (1000 * 1000);
906	>	} while (nanos >= 0L);
907	>	}
908	>
909	>	/**
910	>	* Allows use of try-with-resources with per-test thread pools.
911	>	*/
912	>	class PoolCleaner implements AutoCloseable {
913	>	private final ExecutorService pool;
914	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
915	>	public void close() { joinPool(pool); }
916	>	}
917	>
918	>	/**
919	>	* An extension of PoolCleaner that has an action to release the pool.
920	>	*/
921	>	class PoolCleanerWithReleaser extends PoolCleaner {
922	>	private final Runnable releaser;
923	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
924	>	super(pool);
925	>	this.releaser = releaser;
926	>	}
927	>	public void close() {
928	>	try {
929	>	releaser.run();
930	>	} finally {
931	>	super.close();
932	>	}
933		}
934		}
935
936	+	PoolCleaner cleaner(ExecutorService pool) {
937	+	return new PoolCleaner(pool);
938	+	}
939	+
940	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
941	+	return new PoolCleanerWithReleaser(pool, releaser);
942	+	}
943	+
944	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
945	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
946	+	}
947	+
948	+	Runnable releaser(final CountDownLatch latch) {
949	+	return new Runnable() { public void run() {
950	+	do { latch.countDown(); }
951	+	while (latch.getCount() > 0);
952	+	}};
953	+	}
954	+
955	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
956	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
957	+	}
958	+
959	+	Runnable releaser(final AtomicBoolean flag) {
960	+	return new Runnable() { public void run() { flag.set(true); }};
961	+	}
962	+
963		/**
964		* Waits out termination of a thread pool or fails doing so.
965		*/
966	<	void joinPool(ExecutorService exec) {
966	>	void joinPool(ExecutorService pool) {
967		try {
968	<	exec.shutdown();
969	<	assertTrue("ExecutorService did not terminate in a timely manner",
970	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
968	>	pool.shutdown();
969	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
970	>	try {
971	>	threadFail("ExecutorService " + pool +
972	>	" did not terminate in a timely manner");
973	>	} finally {
974	>	// last resort, for the benefit of subsequent tests
975	>	pool.shutdownNow();
976	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
977	>	}
978	>	}
979		} catch (SecurityException ok) {
980		// Allowed in case test doesn't have privs
981	<	} catch (InterruptedException ie) {
982	<	fail("Unexpected InterruptedException");
981	>	} catch (InterruptedException fail) {
982	>	threadFail("Unexpected InterruptedException");
983		}
984		}
985
986		/**
987	<	* A debugging tool to print all stack traces, as jstack does.
987	>	* Like Runnable, but with the freedom to throw anything.
988	>	* junit folks had the same idea:
989	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
990	>	*/
991	>	interface Action { public void run() throws Throwable; }
992	>
993	>	/**
994	>	* Runs all the given actions in parallel, failing if any fail.
995	>	* Useful for running multiple variants of tests that are
996	>	* necessarily individually slow because they must block.
997		*/
998	<	static void printAllStackTraces() {
999	<	for (ThreadInfo info :
1000	<	ManagementFactory.getThreadMXBean()
1001	<	.dumpAllThreads(true, true))
998	>	void testInParallel(Action ... actions) {
999	>	ExecutorService pool = Executors.newCachedThreadPool();
1000	>	try (PoolCleaner cleaner = cleaner(pool)) {
1001	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1002	>	for (final Action action : actions)
1003	>	futures.add(pool.submit(new CheckedRunnable() {
1004	>	public void realRun() throws Throwable { action.run();}}));
1005	>	for (Future<?> future : futures)
1006	>	try {
1007	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1008	>	} catch (ExecutionException ex) {
1009	>	threadUnexpectedException(ex.getCause());
1010	>	} catch (Exception ex) {
1011	>	threadUnexpectedException(ex);
1012	>	}
1013	>	}
1014	>	}
1015	>
1016	>	/**
1017	>	* A debugging tool to print stack traces of most threads, as jstack does.
1018	>	* Uninteresting threads are filtered out.
1019	>	*/
1020	>	static void dumpTestThreads() {
1021	>	SecurityManager sm = System.getSecurityManager();
1022	>	if (sm != null) {
1023	>	try {
1024	>	System.setSecurityManager(null);
1025	>	} catch (SecurityException giveUp) {
1026	>	return;
1027	>	}
1028	>	}
1029	>
1030	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1031	>	System.err.println("------ stacktrace dump start ------");
1032	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1033	>	final String name = info.getThreadName();
1034	>	String lockName;
1035	>	if ("Signal Dispatcher".equals(name))
1036	>	continue;
1037	>	if ("Reference Handler".equals(name)
1038	>	&& (lockName = info.getLockName()) != null
1039	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1040	>	continue;
1041	>	if ("Finalizer".equals(name)
1042	>	&& (lockName = info.getLockName()) != null
1043	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1044	>	continue;
1045	>	if ("checkForWedgedTest".equals(name))
1046	>	continue;
1047		System.err.print(info);
1048	+	}
1049	+	System.err.println("------ stacktrace dump end ------");
1050	+
1051	+	if (sm != null) System.setSecurityManager(sm);
1052		}
1053
1054		/**
#	Line 658 | Line 1067 | public class JSR166TestCase extends Test
1067		// No need to optimize the failing case via Thread.join.
1068		delay(millis);
1069		assertTrue(thread.isAlive());
1070	<	} catch (InterruptedException ie) {
1071	<	fail("Unexpected InterruptedException");
1070	>	} catch (InterruptedException fail) {
1071	>	threadFail("Unexpected InterruptedException");
1072		}
1073		}
1074
#	Line 680 | Line 1089 | public class JSR166TestCase extends Test
1089		delay(millis);
1090		for (Thread thread : threads)
1091		assertTrue(thread.isAlive());
1092	<	} catch (InterruptedException ie) {
1093	<	fail("Unexpected InterruptedException");
1092	>	} catch (InterruptedException fail) {
1093	>	threadFail("Unexpected InterruptedException");
1094		}
1095		}
1096
#	Line 702 | Line 1111 | public class JSR166TestCase extends Test
1111		future.get(timeoutMillis, MILLISECONDS);
1112		shouldThrow();
1113		} catch (TimeoutException success) {
1114	<	} catch (Exception e) {
1115	<	threadUnexpectedException(e);
1114	>	} catch (Exception fail) {
1115	>	threadUnexpectedException(fail);
1116		} finally { future.cancel(true); }
1117		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1118		}
#	Line 826 | Line 1235 | public class JSR166TestCase extends Test
1235		}
1236		public void refresh() {}
1237		public String toString() {
1238	<	List<Permission> ps = new ArrayList<Permission>();
1238	>	List<Permission> ps = new ArrayList<>();
1239		for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1240		ps.add(e.nextElement());
1241		return "AdjustablePolicy with permissions " + ps;
#	Line 856 | Line 1265 | public class JSR166TestCase extends Test
1265		* Sleeps until the given time has elapsed.
1266		* Throws AssertionFailedError if interrupted.
1267		*/
1268	<	void sleep(long millis) {
1268	>	static void sleep(long millis) {
1269		try {
1270		delay(millis);
1271	<	} catch (InterruptedException ie) {
1271	>	} catch (InterruptedException fail) {
1272		AssertionFailedError afe =
1273		new AssertionFailedError("Unexpected InterruptedException");
1274	<	afe.initCause(ie);
1274	>	afe.initCause(fail);
1275		throw afe;
1276		}
1277		}
#	Line 872 | Line 1281 | public class JSR166TestCase extends Test
1281		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1282		*/
1283		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1284	<	long startTime = System.nanoTime();
1284	>	long startTime = 0L;
1285		for (;;) {
1286		Thread.State s = thread.getState();
1287		if (s == Thread.State.BLOCKED ||
#	Line 881 | Line 1290 | public class JSR166TestCase extends Test
1290		return;
1291		else if (s == Thread.State.TERMINATED)
1292		fail("Unexpected thread termination");
1293	+	else if (startTime == 0L)
1294	+	startTime = System.nanoTime();
1295		else if (millisElapsedSince(startTime) > timeoutMillis) {
1296		threadAssertTrue(thread.isAlive());
1297		return;
#	Line 900 | Line 1311 | public class JSR166TestCase extends Test
1311		/**
1312		* Returns the number of milliseconds since time given by
1313		* startNanoTime, which must have been previously returned from a
1314	<	* call to {@link System.nanoTime()}.
1314	>	* call to {@link System#nanoTime()}.
1315		*/
1316	<	long millisElapsedSince(long startNanoTime) {
1316	>	static long millisElapsedSince(long startNanoTime) {
1317		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1318		}
1319
1320	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1321	+	//         long startTime = System.nanoTime();
1322	+	//         try {
1323	+	//             r.run();
1324	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1325	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1326	+	//             throw new AssertionFailedError("did not return promptly");
1327	+	//     }
1328	+
1329	+	//     void assertTerminatesPromptly(Runnable r) {
1330	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1331	+	//     }
1332	+
1333	+	/**
1334	+	* Checks that timed f.get() returns the expected value, and does not
1335	+	* wait for the timeout to elapse before returning.
1336	+	*/
1337	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1338	+	long startTime = System.nanoTime();
1339	+	try {
1340	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1341	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1342	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1343	+	throw new AssertionFailedError("timed get did not return promptly");
1344	+	}
1345	+
1346	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1347	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1348	+	}
1349	+
1350		/**
1351		* Returns a new started daemon Thread running the given runnable.
1352		*/
#	Line 924 | Line 1365 | public class JSR166TestCase extends Test
1365		void awaitTermination(Thread t, long timeoutMillis) {
1366		try {
1367		t.join(timeoutMillis);
1368	<	} catch (InterruptedException ie) {
1369	<	threadUnexpectedException(ie);
1368	>	} catch (InterruptedException fail) {
1369	>	threadUnexpectedException(fail);
1370		} finally {
1371		if (t.getState() != Thread.State.TERMINATED) {
1372		t.interrupt();
1373	<	fail("Test timed out");
1373	>	threadFail("timed out waiting for thread to terminate");
1374		}
1375		}
1376		}
#	Line 951 | Line 1392 | public class JSR166TestCase extends Test
1392		public final void run() {
1393		try {
1394		realRun();
1395	<	} catch (Throwable t) {
1396	<	threadUnexpectedException(t);
1395	>	} catch (Throwable fail) {
1396	>	threadUnexpectedException(fail);
1397		}
1398		}
1399		}
#	Line 1006 | Line 1447 | public class JSR166TestCase extends Test
1447		threadShouldThrow("InterruptedException");
1448		} catch (InterruptedException success) {
1449		threadAssertFalse(Thread.interrupted());
1450	<	} catch (Throwable t) {
1451	<	threadUnexpectedException(t);
1450	>	} catch (Throwable fail) {
1451	>	threadUnexpectedException(fail);
1452		}
1453		}
1454		}
#	Line 1018 | Line 1459 | public class JSR166TestCase extends Test
1459		public final T call() {
1460		try {
1461		return realCall();
1462	<	} catch (Throwable t) {
1463	<	threadUnexpectedException(t);
1462	>	} catch (Throwable fail) {
1463	>	threadUnexpectedException(fail);
1464		return null;
1465		}
1466		}
#	Line 1036 | Line 1477 | public class JSR166TestCase extends Test
1477		return result;
1478		} catch (InterruptedException success) {
1479		threadAssertFalse(Thread.interrupted());
1480	<	} catch (Throwable t) {
1481	<	threadUnexpectedException(t);
1480	>	} catch (Throwable fail) {
1481	>	threadUnexpectedException(fail);
1482		}
1483		return null;
1484		}
#	Line 1054 | Line 1495 | public class JSR166TestCase extends Test
1495		public static final String TEST_STRING = "a test string";
1496
1497		public static class StringTask implements Callable<String> {
1498	<	public String call() { return TEST_STRING; }
1498	>	final String value;
1499	>	public StringTask() { this(TEST_STRING); }
1500	>	public StringTask(String value) { this.value = value; }
1501	>	public String call() { return value; }
1502		}
1503
1504		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 1067 | Line 1511 | public class JSR166TestCase extends Test
1511		}};
1512		}
1513
1514	<	public Runnable awaiter(final CountDownLatch latch) {
1514	>	public Runnable countDowner(final CountDownLatch latch) {
1515		return new CheckedRunnable() {
1516		public void realRun() throws InterruptedException {
1517	<	await(latch);
1517	>	latch.countDown();
1518		}};
1519		}
1520
1521	<	public void await(CountDownLatch latch) {
1521	>	class LatchAwaiter extends CheckedRunnable {
1522	>	static final int NEW = 0;
1523	>	static final int RUNNING = 1;
1524	>	static final int DONE = 2;
1525	>	final CountDownLatch latch;
1526	>	int state = NEW;
1527	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1528	>	public void realRun() throws InterruptedException {
1529	>	state = 1;
1530	>	await(latch);
1531	>	state = 2;
1532	>	}
1533	>	}
1534	>
1535	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1536	>	return new LatchAwaiter(latch);
1537	>	}
1538	>
1539	>	public void await(CountDownLatch latch, long timeoutMillis) {
1540		try {
1541	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1542	<	} catch (Throwable t) {
1543	<	threadUnexpectedException(t);
1541	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1542	>	fail("timed out waiting for CountDownLatch for "
1543	>	+ (timeoutMillis/1000) + " sec");
1544	>	} catch (Throwable fail) {
1545	>	threadUnexpectedException(fail);
1546		}
1547		}
1548
1549	+	public void await(CountDownLatch latch) {
1550	+	await(latch, LONG_DELAY_MS);
1551	+	}
1552	+
1553		public void await(Semaphore semaphore) {
1554		try {
1555	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1556	<	} catch (Throwable t) {
1557	<	threadUnexpectedException(t);
1555	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1556	>	fail("timed out waiting for Semaphore for "
1557	>	+ (LONG_DELAY_MS/1000) + " sec");
1558	>	} catch (Throwable fail) {
1559	>	threadUnexpectedException(fail);
1560		}
1561		}
1562
#	Line 1280 | Line 1750 | public class JSR166TestCase extends Test
1750		@Override protected final void compute() {
1751		try {
1752		realCompute();
1753	<	} catch (Throwable t) {
1754	<	threadUnexpectedException(t);
1753	>	} catch (Throwable fail) {
1754	>	threadUnexpectedException(fail);
1755		}
1756		}
1757		}
#	Line 1295 | Line 1765 | public class JSR166TestCase extends Test
1765		@Override protected final T compute() {
1766		try {
1767		return realCompute();
1768	<	} catch (Throwable t) {
1769	<	threadUnexpectedException(t);
1768	>	} catch (Throwable fail) {
1769	>	threadUnexpectedException(fail);
1770		return null;
1771		}
1772		}
#	Line 1314 | Line 1784 | public class JSR166TestCase extends Test
1784		* A CyclicBarrier that uses timed await and fails with
1785		* AssertionFailedErrors instead of throwing checked exceptions.
1786		*/
1787	<	public class CheckedBarrier extends CyclicBarrier {
1787	>	public static class CheckedBarrier extends CyclicBarrier {
1788		public CheckedBarrier(int parties) { super(parties); }
1789
1790		public int await() {
1791		try {
1792		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1793	<	} catch (TimeoutException e) {
1793	>	} catch (TimeoutException timedOut) {
1794		throw new AssertionFailedError("timed out");
1795	<	} catch (Exception e) {
1795	>	} catch (Exception fail) {
1796		AssertionFailedError afe =
1797	<	new AssertionFailedError("Unexpected exception: " + e);
1798	<	afe.initCause(e);
1797	>	new AssertionFailedError("Unexpected exception: " + fail);
1798	>	afe.initCause(fail);
1799		throw afe;
1800		}
1801		}
#	Line 1353 | Line 1823 | public class JSR166TestCase extends Test
1823		q.remove();
1824		shouldThrow();
1825		} catch (NoSuchElementException success) {}
1826	<	} catch (InterruptedException ie) {
1357	<	threadUnexpectedException(ie);
1358	<	}
1826	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1827		}
1828
1829		void assertSerialEquals(Object x, Object y) {
#	Line 1374 | Line 1842 | public class JSR166TestCase extends Test
1842		oos.flush();
1843		oos.close();
1844		return bos.toByteArray();
1845	<	} catch (Throwable t) {
1846	<	threadUnexpectedException(t);
1845	>	} catch (Throwable fail) {
1846	>	threadUnexpectedException(fail);
1847		return new byte[0];
1848		}
1849		}
1850
1851	+	void assertImmutable(final Object o) {
1852	+	if (o instanceof Collection) {
1853	+	assertThrows(
1854	+	UnsupportedOperationException.class,
1855	+	new Runnable() { public void run() {
1856	+	((Collection) o).add(null);}});
1857	+	}
1858	+	}
1859	+
1860		@SuppressWarnings("unchecked")
1861		<T> T serialClone(T o) {
1862		try {
1863		ObjectInputStream ois = new ObjectInputStream
1864		(new ByteArrayInputStream(serialBytes(o)));
1865		T clone = (T) ois.readObject();
1866	+	if (o == clone) assertImmutable(o);
1867		assertSame(o.getClass(), clone.getClass());
1868		return clone;
1869	<	} catch (Throwable t) {
1870	<	threadUnexpectedException(t);
1869	>	} catch (Throwable fail) {
1870	>	threadUnexpectedException(fail);
1871	>	return null;
1872	>	}
1873	>	}
1874	>
1875	>	/**
1876	>	* A version of serialClone that leaves error handling (for
1877	>	* e.g. NotSerializableException) up to the caller.
1878	>	*/
1879	>	@SuppressWarnings("unchecked")
1880	>	<T> T serialClonePossiblyFailing(T o)
1881	>	throws ReflectiveOperationException, java.io.IOException {
1882	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1883	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1884	>	oos.writeObject(o);
1885	>	oos.flush();
1886	>	oos.close();
1887	>	ObjectInputStream ois = new ObjectInputStream
1888	>	(new ByteArrayInputStream(bos.toByteArray()));
1889	>	T clone = (T) ois.readObject();
1890	>	if (o == clone) assertImmutable(o);
1891	>	assertSame(o.getClass(), clone.getClass());
1892	>	return clone;
1893	>	}
1894	>
1895	>	/**
1896	>	* If o implements Cloneable and has a public clone method,
1897	>	* returns a clone of o, else null.
1898	>	*/
1899	>	@SuppressWarnings("unchecked")
1900	>	<T> T cloneableClone(T o) {
1901	>	if (!(o instanceof Cloneable)) return null;
1902	>	final T clone;
1903	>	try {
1904	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1905	>	} catch (NoSuchMethodException ok) {
1906		return null;
1907	+	} catch (ReflectiveOperationException unexpected) {
1908	+	throw new Error(unexpected);
1909		}
1910	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1911	+	assertSame(o.getClass(), clone.getClass());
1912	+	return clone;
1913		}
1914
1915		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
#	Line 1414 | Line 1932 | public class JSR166TestCase extends Test
1932		shouldThrow(expectedExceptionClass.getName());
1933		}
1934		}
1935	+
1936	+	public void assertIteratorExhausted(Iterator<?> it) {
1937	+	try {
1938	+	it.next();
1939	+	shouldThrow();
1940	+	} catch (NoSuchElementException success) {}
1941	+	assertFalse(it.hasNext());
1942	+	}
1943	+
1944	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1945	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1946	+	}
1947	+
1948	+	public Runnable runnableThrowing(final RuntimeException ex) {
1949	+	return new Runnable() { public void run() { throw ex; }};
1950	+	}
1951	+
1952	+	/** A reusable thread pool to be shared by tests. */
1953	+	static final ExecutorService cachedThreadPool =
1954	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1955	+	1000L, MILLISECONDS,
1956	+	new SynchronousQueue<Runnable>());
1957	+
1958	+	static <T> void shuffle(T[] array) {
1959	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1960	+	}
1961		}

Diff Legend

–	Removed lines
+	Added lines
<	Changed lines
>	Changed lines