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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.75 by jsr166, Tue May 3 06:08:49 2011 UTC vs.
Revision 1.217 by jsr166, Tue Jan 24 22:57:02 2017 UTC

#	Line 6 | Line 6
6		* Pat Fisher, Mike Judd.
7		*/
8
9	<	import junit.framework.*;
10	<	import java.util.Arrays;
11	<	import java.util.NoSuchElementException;
12	<	import java.util.PropertyPermission;
13	<	import java.util.concurrent.*;
14	<	import java.util.concurrent.atomic.AtomicReference;
9	>	/*
10	>	* @test
11	>	* @summary JSR-166 tck tests (conformance testing mode)
12	>	* @build *
13	>	* @modules java.management
14	>	* @run junit/othervm/timeout=1000 JSR166TestCase
15	>	*/
16	>
17	>	/*
18	>	* @test
19	>	* @summary JSR-166 tck tests (whitebox tests allowed)
20	>	* @build *
21	>	* @modules java.base/java.util.concurrent:open
22	>	*          java.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	>	* @run junit/othervm/timeout=1000/policy=tck.policy
36	>	*      -Djsr166.testImplementationDetails=true
37	>	*      JSR166TestCase
38	>	*/
39	>
40		import static java.util.concurrent.TimeUnit.MILLISECONDS;
41	+	import static java.util.concurrent.TimeUnit.MINUTES;
42		import static java.util.concurrent.TimeUnit.NANOSECONDS;
43	+
44	+	import java.io.ByteArrayInputStream;
45	+	import java.io.ByteArrayOutputStream;
46	+	import java.io.ObjectInputStream;
47	+	import java.io.ObjectOutputStream;
48	+	import java.lang.management.ManagementFactory;
49	+	import java.lang.management.ThreadInfo;
50	+	import java.lang.management.ThreadMXBean;
51	+	import java.lang.reflect.Constructor;
52	+	import java.lang.reflect.Method;
53	+	import java.lang.reflect.Modifier;
54	+	import java.nio.file.Files;
55	+	import java.nio.file.Paths;
56		import java.security.CodeSource;
57		import java.security.Permission;
58		import java.security.PermissionCollection;
#	Line 21 | Line 60 | import java.security.Permissions;
60		import java.security.Policy;
61		import java.security.ProtectionDomain;
62		import java.security.SecurityPermission;
63	+	import java.util.ArrayList;
64	+	import java.util.Arrays;
65	+	import java.util.Collection;
66	+	import java.util.Collections;
67	+	import java.util.Date;
68	+	import java.util.Enumeration;
69	+	import java.util.Iterator;
70	+	import java.util.List;
71	+	import java.util.NoSuchElementException;
72	+	import java.util.PropertyPermission;
73	+	import java.util.concurrent.BlockingQueue;
74	+	import java.util.concurrent.Callable;
75	+	import java.util.concurrent.CountDownLatch;
76	+	import java.util.concurrent.CyclicBarrier;
77	+	import java.util.concurrent.ExecutionException;
78	+	import java.util.concurrent.Executors;
79	+	import java.util.concurrent.ExecutorService;
80	+	import java.util.concurrent.ForkJoinPool;
81	+	import java.util.concurrent.Future;
82	+	import java.util.concurrent.RecursiveAction;
83	+	import java.util.concurrent.RecursiveTask;
84	+	import java.util.concurrent.RejectedExecutionHandler;
85	+	import java.util.concurrent.Semaphore;
86	+	import java.util.concurrent.SynchronousQueue;
87	+	import java.util.concurrent.ThreadFactory;
88	+	import java.util.concurrent.ThreadLocalRandom;
89	+	import java.util.concurrent.ThreadPoolExecutor;
90	+	import java.util.concurrent.TimeoutException;
91	+	import java.util.concurrent.atomic.AtomicBoolean;
92	+	import java.util.concurrent.atomic.AtomicReference;
93	+	import java.util.regex.Matcher;
94	+	import java.util.regex.Pattern;
95	+
96	+	import junit.framework.AssertionFailedError;
97	+	import junit.framework.Test;
98	+	import junit.framework.TestCase;
99	+	import junit.framework.TestResult;
100	+	import junit.framework.TestSuite;
101
102		/**
103		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 32 | Line 109 | import java.security.SecurityPermission;
109		*
110		* <ol>
111		*
112	<	* <li> All assertions in code running in generated threads must use
112	>	* <li>All assertions in code running in generated threads must use
113		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
114		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
115		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
116		* particularly recommended) for other code to use these forms too.
117		* Only the most typically used JUnit assertion methods are defined
118	<	* this way, but enough to live with.</li>
118	>	* this way, but enough to live with.
119		*
120	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
120	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
121		* to invoke {@code super.setUp} and {@code super.tearDown} within
122		* them. These methods are used to clear and check for thread
123	<	* assertion failures.</li>
123	>	* assertion failures.
124		*
125		* <li>All delays and timeouts must use one of the constants {@code
126		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 54 | Line 131 | import java.security.SecurityPermission;
131		* is always discriminable as larger than SHORT and smaller than
132		* MEDIUM.  And so on. These constants are set to conservative values,
133		* but even so, if there is ever any doubt, they can all be increased
134	<	* in one spot to rerun tests on slower platforms.</li>
134	>	* in one spot to rerun tests on slower platforms.
135		*
136	<	* <li> All threads generated must be joined inside each test case
136	>	* <li>All threads generated must be joined inside each test case
137		* method (or {@code fail} to do so) before returning from the
138		* method. The {@code joinPool} method can be used to do this when
139	<	* using Executors.</li>
139	>	* using Executors.
140		*
141		* </ol>
142		*
143	<	* <p> <b>Other notes</b>
143	>	* <p><b>Other notes</b>
144		* <ul>
145		*
146	<	* <li> Usually, there is one testcase method per JSR166 method
146	>	* <li>Usually, there is one testcase method per JSR166 method
147		* covering "normal" operation, and then as many exception-testing
148		* methods as there are exceptions the method can throw. Sometimes
149		* there are multiple tests per JSR166 method when the different
150		* "normal" behaviors differ significantly. And sometimes testcases
151	<	* cover multiple methods when they cannot be tested in
75	<	* isolation.</li>
151	>	* cover multiple methods when they cannot be tested in isolation.
152		*
153	<	* <li> The documentation style for testcases is to provide as javadoc
153	>	* <li>The documentation style for testcases is to provide as javadoc
154		* a simple sentence or two describing the property that the testcase
155		* method purports to test. The javadocs do not say anything about how
156	<	* the property is tested. To find out, read the code.</li>
156	>	* the property is tested. To find out, read the code.
157		*
158	<	* <li> These tests are "conformance tests", and do not attempt to
158	>	* <li>These tests are "conformance tests", and do not attempt to
159		* test throughput, latency, scalability or other performance factors
160		* (see the separate "jtreg" tests for a set intended to check these
161		* for the most central aspects of functionality.) So, most tests use
162		* the smallest sensible numbers of threads, collection sizes, etc
163	<	* needed to check basic conformance.</li>
163	>	* needed to check basic conformance.
164		*
165		* <li>The test classes currently do not declare inclusion in
166		* any particular package to simplify things for people integrating
167	<	* them in TCK test suites.</li>
167	>	* them in TCK test suites.
168		*
169	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
170	<	* runs all JSR166 unit tests.</li>
169	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
170	>	* runs all JSR166 unit tests.
171		*
172		* </ul>
173		*/
#	Line 103 | Line 179 | public class JSR166TestCase extends Test
179		Boolean.getBoolean("jsr166.expensiveTests");
180
181		/**
182	+	* If true, also run tests that are not part of the official tck
183	+	* because they test unspecified implementation details.
184	+	*/
185	+	protected static final boolean testImplementationDetails =
186	+	Boolean.getBoolean("jsr166.testImplementationDetails");
187	+
188	+	/**
189		* If true, report on stdout all "slow" tests, that is, ones that
190		* take more than profileThreshold milliseconds to execute.
191		*/
#	Line 116 | Line 199 | public class JSR166TestCase extends Test
199		private static final long profileThreshold =
200		Long.getLong("jsr166.profileThreshold", 100);
201
202	+	/**
203	+	* The number of repetitions per test (for tickling rare bugs).
204	+	*/
205	+	private static final int runsPerTest =
206	+	Integer.getInteger("jsr166.runsPerTest", 1);
207	+
208	+	/**
209	+	* The number of repetitions of the test suite (for finding leaks?).
210	+	*/
211	+	private static final int suiteRuns =
212	+	Integer.getInteger("jsr166.suiteRuns", 1);
213	+
214	+	/**
215	+	* Returns the value of the system property, or NaN if not defined.
216	+	*/
217	+	private static float systemPropertyValue(String name) {
218	+	String floatString = System.getProperty(name);
219	+	if (floatString == null)
220	+	return Float.NaN;
221	+	try {
222	+	return Float.parseFloat(floatString);
223	+	} catch (NumberFormatException ex) {
224	+	throw new IllegalArgumentException(
225	+	String.format("Bad float value in system property %s=%s",
226	+	name, floatString));
227	+	}
228	+	}
229	+
230	+	/**
231	+	* The scaling factor to apply to standard delays used in tests.
232	+	* May be initialized from any of:
233	+	* - the "jsr166.delay.factor" system property
234	+	* - the "test.timeout.factor" system property (as used by jtreg)
235	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
236	+	* - hard-coded fuzz factor when using a known slowpoke VM
237	+	*/
238	+	private static final float delayFactor = delayFactor();
239	+
240	+	private static float delayFactor() {
241	+	float x;
242	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
243	+	return x;
244	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
245	+	return x;
246	+	String prop = System.getProperty("java.vm.version");
247	+	if (prop != null && prop.matches(".*debug.*"))
248	+	return 4.0f; // How much slower is fastdebug than product?!
249	+	return 1.0f;
250	+	}
251	+
252	+	public JSR166TestCase() { super(); }
253	+	public JSR166TestCase(String name) { super(name); }
254	+
255	+	/**
256	+	* A filter for tests to run, matching strings of the form
257	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
258	+	* Usefully combined with jsr166.runsPerTest.
259	+	*/
260	+	private static final Pattern methodFilter = methodFilter();
261	+
262	+	private static Pattern methodFilter() {
263	+	String regex = System.getProperty("jsr166.methodFilter");
264	+	return (regex == null) ? null : Pattern.compile(regex);
265	+	}
266	+
267	+	// Instrumentation to debug very rare, but very annoying hung test runs.
268	+	static volatile TestCase currentTestCase;
269	+	// static volatile int currentRun = 0;
270	+	static {
271	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
272	+	// Avoid spurious reports with enormous runsPerTest.
273	+	// A single test case run should never take more than 1 second.
274	+	// But let's cap it at the high end too ...
275	+	final int timeoutMinutes =
276	+	Math.min(15, Math.max(runsPerTest / 60, 1));
277	+	for (TestCase lastTestCase = currentTestCase;;) {
278	+	try { MINUTES.sleep(timeoutMinutes); }
279	+	catch (InterruptedException unexpected) { break; }
280	+	if (lastTestCase == currentTestCase) {
281	+	System.err.printf(
282	+	"Looks like we're stuck running test: %s%n",
283	+	lastTestCase);
284	+	//                     System.err.printf(
285	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
286	+	//                         lastTestCase, currentRun, runsPerTest);
287	+	//                     System.err.println("availableProcessors=" +
288	+	//                         Runtime.getRuntime().availableProcessors());
289	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
290	+	dumpTestThreads();
291	+	// one stack dump is probably enough; more would be spam
292	+	break;
293	+	}
294	+	lastTestCase = currentTestCase;
295	+	}}};
296	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
297	+	thread.setDaemon(true);
298	+	thread.start();
299	+	}
300	+
301	+	//     public static String cpuModel() {
302	+	//         try {
303	+	//             Matcher matcher = Pattern.compile("model name\\s*: (.*)")
304	+	//                 .matcher(new String(
305	+	//                      Files.readAllBytes(Paths.get("/proc/cpuinfo")), "UTF-8"));
306	+	//             matcher.find();
307	+	//             return matcher.group(1);
308	+	//         } catch (Exception ex) { return null; }
309	+	//     }
310	+
311	+	public void runBare() throws Throwable {
312	+	currentTestCase = this;
313	+	if (methodFilter == null
314	+	|| methodFilter.matcher(toString()).find())
315	+	super.runBare();
316	+	}
317	+
318		protected void runTest() throws Throwable {
319	<	if (profileTests)
320	<	runTestProfiled();
321	<	else
322	<	super.runTest();
319	>	for (int i = 0; i < runsPerTest; i++) {
320	>	// currentRun = i;
321	>	if (profileTests)
322	>	runTestProfiled();
323	>	else
324	>	super.runTest();
325	>	}
326		}
327
328		protected void runTestProfiled() throws Throwable {
329	<	long t0 = System.nanoTime();
330	<	try {
329	>	for (int i = 0; i < 2; i++) {
330	>	long startTime = System.nanoTime();
331		super.runTest();
332	<	} finally {
333	<	long elapsedMillis =
334	<	(System.nanoTime() - t0) / (1000L * 1000L);
335	<	if (elapsedMillis >= profileThreshold)
332	>	long elapsedMillis = millisElapsedSince(startTime);
333	>	if (elapsedMillis < profileThreshold)
334	>	break;
335	>	// Never report first run of any test; treat it as a
336	>	// warmup run, notably to trigger all needed classloading,
337	>	if (i > 0)
338		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
339		}
340		}
341
342		/**
343	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
343	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
344		*/
345		public static void main(String[] args) {
346	+	main(suite(), args);
347	+	}
348	+
349	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
350	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
351	+	long runTime;
352	+	public void startTest(Test test) {}
353	+	protected void printHeader(long runTime) {
354	+	this.runTime = runTime; // defer printing for later
355	+	}
356	+	protected void printFooter(TestResult result) {
357	+	if (result.wasSuccessful()) {
358	+	getWriter().println("OK (" + result.runCount() + " tests)"
359	+	+ "  Time: " + elapsedTimeAsString(runTime));
360	+	} else {
361	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
362	+	super.printFooter(result);
363	+	}
364	+	}
365	+	}
366	+
367	+	/**
368	+	* Returns a TestRunner that doesn't bother with unnecessary
369	+	* fluff, like printing a "." for each test case.
370	+	*/
371	+	static junit.textui.TestRunner newPithyTestRunner() {
372	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
373	+	runner.setPrinter(new PithyResultPrinter(System.out));
374	+	return runner;
375	+	}
376	+
377	+	/**
378	+	* Runs all unit tests in the given test suite.
379	+	* Actual behavior influenced by jsr166.* system properties.
380	+	*/
381	+	static void main(Test suite, String[] args) {
382		if (useSecurityManager) {
383		System.err.println("Setting a permissive security manager");
384		Policy.setPolicy(permissivePolicy());
385		System.setSecurityManager(new SecurityManager());
386		}
387	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
388	<
389	<	Test s = suite();
390	<	for (int i = 0; i < iters; ++i) {
151	<	junit.textui.TestRunner.run(s);
387	>	for (int i = 0; i < suiteRuns; i++) {
388	>	TestResult result = newPithyTestRunner().doRun(suite);
389	>	if (!result.wasSuccessful())
390	>	System.exit(1);
391		System.gc();
392		System.runFinalization();
393		}
155	–	System.exit(0);
394		}
395
396		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 168 | Line 406 | public class JSR166TestCase extends Test
406		return suite;
407		}
408
409	+	public static void addNamedTestClasses(TestSuite suite,
410	+	String... testClassNames) {
411	+	for (String testClassName : testClassNames) {
412	+	try {
413	+	Class<?> testClass = Class.forName(testClassName);
414	+	Method m = testClass.getDeclaredMethod("suite",
415	+	new Class<?>[0]);
416	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
417	+	} catch (Exception e) {
418	+	throw new Error("Missing test class", e);
419	+	}
420	+	}
421	+	}
422	+
423	+	public static final double JAVA_CLASS_VERSION;
424	+	public static final String JAVA_SPECIFICATION_VERSION;
425	+	static {
426	+	try {
427	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
428	+	new java.security.PrivilegedAction<Double>() {
429	+	public Double run() {
430	+	return Double.valueOf(System.getProperty("java.class.version"));}});
431	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
432	+	new java.security.PrivilegedAction<String>() {
433	+	public String run() {
434	+	return System.getProperty("java.specification.version");}});
435	+	} catch (Throwable t) {
436	+	throw new Error(t);
437	+	}
438	+	}
439	+
440	+	public static boolean atLeastJava6() { return JAVA_CLASS_VERSION >= 50.0; }
441	+	public static boolean atLeastJava7() { return JAVA_CLASS_VERSION >= 51.0; }
442	+	public static boolean atLeastJava8() { return JAVA_CLASS_VERSION >= 52.0; }
443	+	public static boolean atLeastJava9() {
444	+	return JAVA_CLASS_VERSION >= 53.0
445	+	// As of 2015-09, java9 still uses 52.0 class file version
446	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?(9|[0-9][0-9])$");
447	+	}
448	+	public static boolean atLeastJava10() {
449	+	return JAVA_CLASS_VERSION >= 54.0
450	+	|| JAVA_SPECIFICATION_VERSION.matches("^(1\\.)?[0-9][0-9]$");
451	+	}
452	+
453		/**
454		* Collects all JSR166 unit tests as one suite.
455		*/
456		public static Test suite() {
457	<	return newTestSuite(
457	>	// Java7+ test classes
458	>	TestSuite suite = newTestSuite(
459		ForkJoinPoolTest.suite(),
460		ForkJoinTaskTest.suite(),
461		RecursiveActionTest.suite(),
#	Line 186 | Line 469 | public class JSR166TestCase extends Test
469		AbstractQueuedLongSynchronizerTest.suite(),
470		ArrayBlockingQueueTest.suite(),
471		ArrayDequeTest.suite(),
472	+	ArrayListTest.suite(),
473		AtomicBooleanTest.suite(),
474		AtomicIntegerArrayTest.suite(),
475		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 208 | Line 492 | public class JSR166TestCase extends Test
492		CopyOnWriteArrayListTest.suite(),
493		CopyOnWriteArraySetTest.suite(),
494		CountDownLatchTest.suite(),
495	+	CountedCompleterTest.suite(),
496		CyclicBarrierTest.suite(),
497		DelayQueueTest.suite(),
498		EntryTest.suite(),
#	Line 236 | Line 521 | public class JSR166TestCase extends Test
521		TreeMapTest.suite(),
522		TreeSetTest.suite(),
523		TreeSubMapTest.suite(),
524	<	TreeSubSetTest.suite());
524	>	TreeSubSetTest.suite(),
525	>	VectorTest.suite());
526	>
527	>	// Java8+ test classes
528	>	if (atLeastJava8()) {
529	>	String[] java8TestClassNames = {
530	>	"ArrayDeque8Test",
531	>	"Atomic8Test",
532	>	"CompletableFutureTest",
533	>	"ConcurrentHashMap8Test",
534	>	"CountedCompleter8Test",
535	>	"DoubleAccumulatorTest",
536	>	"DoubleAdderTest",
537	>	"ForkJoinPool8Test",
538	>	"ForkJoinTask8Test",
539	>	"LinkedBlockingDeque8Test",
540	>	"LinkedBlockingQueue8Test",
541	>	"LongAccumulatorTest",
542	>	"LongAdderTest",
543	>	"SplittableRandomTest",
544	>	"StampedLockTest",
545	>	"SubmissionPublisherTest",
546	>	"ThreadLocalRandom8Test",
547	>	"TimeUnit8Test",
548	>	};
549	>	addNamedTestClasses(suite, java8TestClassNames);
550	>	}
551	>
552	>	// Java9+ test classes
553	>	if (atLeastJava9()) {
554	>	String[] java9TestClassNames = {
555	>	"AtomicBoolean9Test",
556	>	"AtomicInteger9Test",
557	>	"AtomicIntegerArray9Test",
558	>	"AtomicLong9Test",
559	>	"AtomicLongArray9Test",
560	>	"AtomicReference9Test",
561	>	"AtomicReferenceArray9Test",
562	>	"ExecutorCompletionService9Test",
563	>	};
564	>	addNamedTestClasses(suite, java9TestClassNames);
565	>	}
566	>
567	>	return suite;
568	>	}
569	>
570	>	/** Returns list of junit-style test method names in given class. */
571	>	public static ArrayList<String> testMethodNames(Class<?> testClass) {
572	>	Method[] methods = testClass.getDeclaredMethods();
573	>	ArrayList<String> names = new ArrayList<>(methods.length);
574	>	for (Method method : methods) {
575	>	if (method.getName().startsWith("test")
576	>	&& Modifier.isPublic(method.getModifiers())
577	>	// method.getParameterCount() requires jdk8+
578	>	&& method.getParameterTypes().length == 0) {
579	>	names.add(method.getName());
580	>	}
581	>	}
582	>	return names;
583	>	}
584	>
585	>	/**
586	>	* Returns junit-style testSuite for the given test class, but
587	>	* parameterized by passing extra data to each test.
588	>	*/
589	>	public static <ExtraData> Test parameterizedTestSuite
590	>	(Class<? extends JSR166TestCase> testClass,
591	>	Class<ExtraData> dataClass,
592	>	ExtraData data) {
593	>	try {
594	>	TestSuite suite = new TestSuite();
595	>	Constructor c =
596	>	testClass.getDeclaredConstructor(dataClass, String.class);
597	>	for (String methodName : testMethodNames(testClass))
598	>	suite.addTest((Test) c.newInstance(data, methodName));
599	>	return suite;
600	>	} catch (Exception e) {
601	>	throw new Error(e);
602	>	}
603	>	}
604	>
605	>	/**
606	>	* Returns junit-style testSuite for the jdk8 extension of the
607	>	* given test class, but parameterized by passing extra data to
608	>	* each test.  Uses reflection to allow compilation in jdk7.
609	>	*/
610	>	public static <ExtraData> Test jdk8ParameterizedTestSuite
611	>	(Class<? extends JSR166TestCase> testClass,
612	>	Class<ExtraData> dataClass,
613	>	ExtraData data) {
614	>	if (atLeastJava8()) {
615	>	String name = testClass.getName();
616	>	String name8 = name.replaceAll("Test$", "8Test");
617	>	if (name.equals(name8)) throw new Error(name);
618	>	try {
619	>	return (Test)
620	>	Class.forName(name8)
621	>	.getMethod("testSuite", new Class[] { dataClass })
622	>	.invoke(null, data);
623	>	} catch (Exception e) {
624	>	throw new Error(e);
625	>	}
626	>	} else {
627	>	return new TestSuite();
628	>	}
629		}
630
631	+	// Delays for timing-dependent tests, in milliseconds.
632
633		public static long SHORT_DELAY_MS;
634		public static long SMALL_DELAY_MS;
635		public static long MEDIUM_DELAY_MS;
636		public static long LONG_DELAY_MS;
637
248	–
638		/**
639	<	* Returns the shortest timed delay. This could
640	<	* be reimplemented to use for example a Property.
639	>	* Returns the shortest timed delay. This can be scaled up for
640	>	* slow machines using the jsr166.delay.factor system property,
641	>	* or via jtreg's -timeoutFactor: flag.
642	>	* http://openjdk.java.net/jtreg/command-help.html
643		*/
644		protected long getShortDelay() {
645	<	return 50;
645	>	return (long) (50 * delayFactor);
646		}
647
257	–
648		/**
649		* Sets delays as multiples of SHORT_DELAY.
650		*/
#	Line 266 | Line 656 | public class JSR166TestCase extends Test
656		}
657
658		/**
659	+	* Returns a timeout in milliseconds to be used in tests that
660	+	* verify that operations block or time out.
661	+	*/
662	+	long timeoutMillis() {
663	+	return SHORT_DELAY_MS / 4;
664	+	}
665	+
666	+	/**
667	+	* Returns a new Date instance representing a time at least
668	+	* delayMillis milliseconds in the future.
669	+	*/
670	+	Date delayedDate(long delayMillis) {
671	+	// Add 1 because currentTimeMillis is known to round into the past.
672	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
673	+	}
674	+
675	+	/**
676		* The first exception encountered if any threadAssertXXX method fails.
677		*/
678		private final AtomicReference<Throwable> threadFailure
679	<	= new AtomicReference<Throwable>(null);
679	>	= new AtomicReference<>(null);
680
681		/**
682		* Records an exception so that it can be rethrown later in the test
#	Line 278 | Line 685 | public class JSR166TestCase extends Test
685		* the same test have no effect.
686		*/
687		public void threadRecordFailure(Throwable t) {
688	+	System.err.println(t);
689	+	dumpTestThreads();
690		threadFailure.compareAndSet(null, t);
691		}
692
#	Line 285 | Line 694 | public class JSR166TestCase extends Test
694		setDelays();
695		}
696
697	+	void tearDownFail(String format, Object... args) {
698	+	String msg = toString() + ": " + String.format(format, args);
699	+	System.err.println(msg);
700	+	dumpTestThreads();
701	+	throw new AssertionFailedError(msg);
702	+	}
703	+
704		/**
705	+	* Extra checks that get done for all test cases.
706	+	*
707		* Triggers test case failure if any thread assertions have failed,
708		* by rethrowing, in the test harness thread, any exception recorded
709		* earlier by threadRecordFailure.
710	+	*
711	+	* Triggers test case failure if interrupt status is set in the main thread.
712		*/
713		public void tearDown() throws Exception {
714		Throwable t = threadFailure.getAndSet(null);
#	Line 306 | Line 726 | public class JSR166TestCase extends Test
726		throw afe;
727		}
728		}
729	+
730	+	if (Thread.interrupted())
731	+	tearDownFail("interrupt status set in main thread");
732	+
733	+	checkForkJoinPoolThreadLeaks();
734	+	}
735	+
736	+	/**
737	+	* Finds missing PoolCleaners
738	+	*/
739	+	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
740	+	Thread[] survivors = new Thread[7];
741	+	int count = Thread.enumerate(survivors);
742	+	for (int i = 0; i < count; i++) {
743	+	Thread thread = survivors[i];
744	+	String name = thread.getName();
745	+	if (name.startsWith("ForkJoinPool-")) {
746	+	// give thread some time to terminate
747	+	thread.join(LONG_DELAY_MS);
748	+	if (thread.isAlive())
749	+	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
750	+	thread);
751	+	}
752	+	}
753	+
754	+	if (!ForkJoinPool.commonPool()
755	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
756	+	tearDownFail("ForkJoin common pool thread stuck");
757		}
758
759		/**
#	Line 318 | Line 766 | public class JSR166TestCase extends Test
766		fail(reason);
767		} catch (AssertionFailedError t) {
768		threadRecordFailure(t);
769	<	fail(reason);
769	>	throw t;
770		}
771		}
772
#	Line 386 | Line 834 | public class JSR166TestCase extends Test
834		public void threadAssertEquals(Object x, Object y) {
835		try {
836		assertEquals(x, y);
837	<	} catch (AssertionFailedError t) {
838	<	threadRecordFailure(t);
839	<	throw t;
840	<	} catch (Throwable t) {
841	<	threadUnexpectedException(t);
837	>	} catch (AssertionFailedError fail) {
838	>	threadRecordFailure(fail);
839	>	throw fail;
840	>	} catch (Throwable fail) {
841	>	threadUnexpectedException(fail);
842		}
843		}
844
#	Line 402 | Line 850 | public class JSR166TestCase extends Test
850		public void threadAssertSame(Object x, Object y) {
851		try {
852		assertSame(x, y);
853	<	} catch (AssertionFailedError t) {
854	<	threadRecordFailure(t);
855	<	throw t;
853	>	} catch (AssertionFailedError fail) {
854	>	threadRecordFailure(fail);
855	>	throw fail;
856		}
857		}
858
#	Line 437 | Line 885 | public class JSR166TestCase extends Test
885		else {
886		AssertionFailedError afe =
887		new AssertionFailedError("unexpected exception: " + t);
888	<	t.initCause(t);
888	>	afe.initCause(t);
889		throw afe;
890		}
891		}
892
893		/**
894	+	* Delays, via Thread.sleep, for the given millisecond delay, but
895	+	* if the sleep is shorter than specified, may re-sleep or yield
896	+	* until time elapses.  Ensures that the given time, as measured
897	+	* by System.nanoTime(), has elapsed.
898	+	*/
899	+	static void delay(long millis) throws InterruptedException {
900	+	long nanos = millis * (1000 * 1000);
901	+	final long wakeupTime = System.nanoTime() + nanos;
902	+	do {
903	+	if (millis > 0L)
904	+	Thread.sleep(millis);
905	+	else // too short to sleep
906	+	Thread.yield();
907	+	nanos = wakeupTime - System.nanoTime();
908	+	millis = nanos / (1000 * 1000);
909	+	} while (nanos >= 0L);
910	+	}
911	+
912	+	/**
913	+	* Allows use of try-with-resources with per-test thread pools.
914	+	*/
915	+	class PoolCleaner implements AutoCloseable {
916	+	private final ExecutorService pool;
917	+	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
918	+	public void close() { joinPool(pool); }
919	+	}
920	+
921	+	/**
922	+	* An extension of PoolCleaner that has an action to release the pool.
923	+	*/
924	+	class PoolCleanerWithReleaser extends PoolCleaner {
925	+	private final Runnable releaser;
926	+	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
927	+	super(pool);
928	+	this.releaser = releaser;
929	+	}
930	+	public void close() {
931	+	try {
932	+	releaser.run();
933	+	} finally {
934	+	super.close();
935	+	}
936	+	}
937	+	}
938	+
939	+	PoolCleaner cleaner(ExecutorService pool) {
940	+	return new PoolCleaner(pool);
941	+	}
942	+
943	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
944	+	return new PoolCleanerWithReleaser(pool, releaser);
945	+	}
946	+
947	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
948	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
949	+	}
950	+
951	+	Runnable releaser(final CountDownLatch latch) {
952	+	return new Runnable() { public void run() {
953	+	do { latch.countDown(); }
954	+	while (latch.getCount() > 0);
955	+	}};
956	+	}
957	+
958	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
959	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
960	+	}
961	+
962	+	Runnable releaser(final AtomicBoolean flag) {
963	+	return new Runnable() { public void run() { flag.set(true); }};
964	+	}
965	+
966	+	/**
967		* Waits out termination of a thread pool or fails doing so.
968		*/
969	<	public void joinPool(ExecutorService exec) {
969	>	void joinPool(ExecutorService pool) {
970		try {
971	<	exec.shutdown();
972	<	assertTrue("ExecutorService did not terminate in a timely manner",
973	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
971	>	pool.shutdown();
972	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
973	>	try {
974	>	threadFail("ExecutorService " + pool +
975	>	" did not terminate in a timely manner");
976	>	} finally {
977	>	// last resort, for the benefit of subsequent tests
978	>	pool.shutdownNow();
979	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
980	>	}
981	>	}
982		} catch (SecurityException ok) {
983		// Allowed in case test doesn't have privs
984	<	} catch (InterruptedException ie) {
985	<	fail("Unexpected InterruptedException");
984	>	} catch (InterruptedException fail) {
985	>	threadFail("Unexpected InterruptedException");
986	>	}
987	>	}
988	>
989	>	/**
990	>	* Like Runnable, but with the freedom to throw anything.
991	>	* junit folks had the same idea:
992	>	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
993	>	*/
994	>	interface Action { public void run() throws Throwable; }
995	>
996	>	/**
997	>	* Runs all the given actions in parallel, failing if any fail.
998	>	* Useful for running multiple variants of tests that are
999	>	* necessarily individually slow because they must block.
1000	>	*/
1001	>	void testInParallel(Action ... actions) {
1002	>	ExecutorService pool = Executors.newCachedThreadPool();
1003	>	try (PoolCleaner cleaner = cleaner(pool)) {
1004	>	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1005	>	for (final Action action : actions)
1006	>	futures.add(pool.submit(new CheckedRunnable() {
1007	>	public void realRun() throws Throwable { action.run();}}));
1008	>	for (Future<?> future : futures)
1009	>	try {
1010	>	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1011	>	} catch (ExecutionException ex) {
1012	>	threadUnexpectedException(ex.getCause());
1013	>	} catch (Exception ex) {
1014	>	threadUnexpectedException(ex);
1015	>	}
1016	>	}
1017	>	}
1018	>
1019	>	/**
1020	>	* A debugging tool to print stack traces of most threads, as jstack does.
1021	>	* Uninteresting threads are filtered out.
1022	>	*/
1023	>	static void dumpTestThreads() {
1024	>	SecurityManager sm = System.getSecurityManager();
1025	>	if (sm != null) {
1026	>	try {
1027	>	System.setSecurityManager(null);
1028	>	} catch (SecurityException giveUp) {
1029	>	return;
1030	>	}
1031	>	}
1032	>
1033	>	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1034	>	System.err.println("------ stacktrace dump start ------");
1035	>	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1036	>	final String name = info.getThreadName();
1037	>	String lockName;
1038	>	if ("Signal Dispatcher".equals(name))
1039	>	continue;
1040	>	if ("Reference Handler".equals(name)
1041	>	&& (lockName = info.getLockName()) != null
1042	>	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1043	>	continue;
1044	>	if ("Finalizer".equals(name)
1045	>	&& (lockName = info.getLockName()) != null
1046	>	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1047	>	continue;
1048	>	if ("checkForWedgedTest".equals(name))
1049	>	continue;
1050	>	System.err.print(info);
1051		}
1052	+	System.err.println("------ stacktrace dump end ------");
1053	+
1054	+	if (sm != null) System.setSecurityManager(sm);
1055		}
1056
1057	+	/**
1058	+	* Checks that thread does not terminate within the default
1059	+	* millisecond delay of {@code timeoutMillis()}.
1060	+	*/
1061	+	void assertThreadStaysAlive(Thread thread) {
1062	+	assertThreadStaysAlive(thread, timeoutMillis());
1063	+	}
1064	+
1065	+	/**
1066	+	* Checks that thread does not terminate within the given millisecond delay.
1067	+	*/
1068	+	void assertThreadStaysAlive(Thread thread, long millis) {
1069	+	try {
1070	+	// No need to optimize the failing case via Thread.join.
1071	+	delay(millis);
1072	+	assertTrue(thread.isAlive());
1073	+	} catch (InterruptedException fail) {
1074	+	threadFail("Unexpected InterruptedException");
1075	+	}
1076	+	}
1077	+
1078	+	/**
1079	+	* Checks that the threads do not terminate within the default
1080	+	* millisecond delay of {@code timeoutMillis()}.
1081	+	*/
1082	+	void assertThreadsStayAlive(Thread... threads) {
1083	+	assertThreadsStayAlive(timeoutMillis(), threads);
1084	+	}
1085	+
1086	+	/**
1087	+	* Checks that the threads do not terminate within the given millisecond delay.
1088	+	*/
1089	+	void assertThreadsStayAlive(long millis, Thread... threads) {
1090	+	try {
1091	+	// No need to optimize the failing case via Thread.join.
1092	+	delay(millis);
1093	+	for (Thread thread : threads)
1094	+	assertTrue(thread.isAlive());
1095	+	} catch (InterruptedException fail) {
1096	+	threadFail("Unexpected InterruptedException");
1097	+	}
1098	+	}
1099	+
1100	+	/**
1101	+	* Checks that future.get times out, with the default timeout of
1102	+	* {@code timeoutMillis()}.
1103	+	*/
1104	+	void assertFutureTimesOut(Future future) {
1105	+	assertFutureTimesOut(future, timeoutMillis());
1106	+	}
1107	+
1108	+	/**
1109	+	* Checks that future.get times out, with the given millisecond timeout.
1110	+	*/
1111	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1112	+	long startTime = System.nanoTime();
1113	+	try {
1114	+	future.get(timeoutMillis, MILLISECONDS);
1115	+	shouldThrow();
1116	+	} catch (TimeoutException success) {
1117	+	} catch (Exception fail) {
1118	+	threadUnexpectedException(fail);
1119	+	} finally { future.cancel(true); }
1120	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1121	+	}
1122
1123		/**
1124		* Fails with message "should throw exception".
#	Line 497 | Line 1159 | public class JSR166TestCase extends Test
1159		public static final Integer m6  = new Integer(-6);
1160		public static final Integer m10 = new Integer(-10);
1161
500	–
1162		/**
1163		* Runs Runnable r with a security policy that permits precisely
1164		* the specified permissions.  If there is no current security
#	Line 509 | Line 1170 | public class JSR166TestCase extends Test
1170		SecurityManager sm = System.getSecurityManager();
1171		if (sm == null) {
1172		r.run();
1173	+	}
1174	+	runWithSecurityManagerWithPermissions(r, permissions);
1175	+	}
1176	+
1177	+	/**
1178	+	* Runs Runnable r with a security policy that permits precisely
1179	+	* the specified permissions.  If there is no current security
1180	+	* manager, a temporary one is set for the duration of the
1181	+	* Runnable.  We require that any security manager permit
1182	+	* getPolicy/setPolicy.
1183	+	*/
1184	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1185	+	Permission... permissions) {
1186	+	SecurityManager sm = System.getSecurityManager();
1187	+	if (sm == null) {
1188		Policy savedPolicy = Policy.getPolicy();
1189		try {
1190		Policy.setPolicy(permissivePolicy());
1191		System.setSecurityManager(new SecurityManager());
1192	<	runWithPermissions(r, permissions);
1192	>	runWithSecurityManagerWithPermissions(r, permissions);
1193		} finally {
1194		System.setSecurityManager(null);
1195		Policy.setPolicy(savedPolicy);
#	Line 561 | Line 1237 | public class JSR166TestCase extends Test
1237		return perms.implies(p);
1238		}
1239		public void refresh() {}
1240	+	public String toString() {
1241	+	List<Permission> ps = new ArrayList<>();
1242	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1243	+	ps.add(e.nextElement());
1244	+	return "AdjustablePolicy with permissions " + ps;
1245	+	}
1246		}
1247
1248		/**
#	Line 586 | Line 1268 | public class JSR166TestCase extends Test
1268		* Sleeps until the given time has elapsed.
1269		* Throws AssertionFailedError if interrupted.
1270		*/
1271	<	void sleep(long millis) {
1271	>	static void sleep(long millis) {
1272		try {
1273	<	Thread.sleep(millis);
1274	<	} catch (InterruptedException ie) {
1273	>	delay(millis);
1274	>	} catch (InterruptedException fail) {
1275		AssertionFailedError afe =
1276		new AssertionFailedError("Unexpected InterruptedException");
1277	<	afe.initCause(ie);
1277	>	afe.initCause(fail);
1278		throw afe;
1279		}
1280		}
1281
1282		/**
1283	<	* Sleeps until the timeout has elapsed, or interrupted.
602	<	* Does <em>NOT</em> throw InterruptedException.
603	<	*/
604	<	void sleepTillInterrupted(long timeoutMillis) {
605	<	try {
606	<	Thread.sleep(timeoutMillis);
607	<	} catch (InterruptedException wakeup) {}
608	<	}
609	<
610	<	/**
611	<	* Waits up to the specified number of milliseconds for the given
1283	>	* Spin-waits up to the specified number of milliseconds for the given
1284		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1285		*/
1286		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1287	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
616	<	long t0 = System.nanoTime();
1287	>	long startTime = 0L;
1288		for (;;) {
1289		Thread.State s = thread.getState();
1290		if (s == Thread.State.BLOCKED ||
#	Line 622 | Line 1293 | public class JSR166TestCase extends Test
1293		return;
1294		else if (s == Thread.State.TERMINATED)
1295		fail("Unexpected thread termination");
1296	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1296	>	else if (startTime == 0L)
1297	>	startTime = System.nanoTime();
1298	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1299		threadAssertTrue(thread.isAlive());
1300		return;
1301		}
#	Line 641 | Line 1314 | public class JSR166TestCase extends Test
1314		/**
1315		* Returns the number of milliseconds since time given by
1316		* startNanoTime, which must have been previously returned from a
1317	<	* call to {@link System.nanoTime()}.
1317	>	* call to {@link System#nanoTime()}.
1318		*/
1319	<	long millisElapsedSince(long startNanoTime) {
1319	>	static long millisElapsedSince(long startNanoTime) {
1320		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1321		}
1322
1323	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1324	+	//         long startTime = System.nanoTime();
1325	+	//         try {
1326	+	//             r.run();
1327	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1328	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1329	+	//             throw new AssertionFailedError("did not return promptly");
1330	+	//     }
1331	+
1332	+	//     void assertTerminatesPromptly(Runnable r) {
1333	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1334	+	//     }
1335	+
1336	+	/**
1337	+	* Checks that timed f.get() returns the expected value, and does not
1338	+	* wait for the timeout to elapse before returning.
1339	+	*/
1340	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1341	+	long startTime = System.nanoTime();
1342	+	try {
1343	+	assertEquals(expectedValue, f.get(timeoutMillis, MILLISECONDS));
1344	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1345	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1346	+	throw new AssertionFailedError("timed get did not return promptly");
1347	+	}
1348	+
1349	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1350	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1351	+	}
1352	+
1353		/**
1354		* Returns a new started daemon Thread running the given runnable.
1355		*/
#	Line 665 | Line 1368 | public class JSR166TestCase extends Test
1368		void awaitTermination(Thread t, long timeoutMillis) {
1369		try {
1370		t.join(timeoutMillis);
1371	<	} catch (InterruptedException ie) {
1372	<	threadUnexpectedException(ie);
1371	>	} catch (InterruptedException fail) {
1372	>	threadUnexpectedException(fail);
1373		} finally {
1374	<	if (t.isAlive()) {
1374	>	if (t.getState() != Thread.State.TERMINATED) {
1375		t.interrupt();
1376	<	fail("Test timed out");
1376	>	threadFail("timed out waiting for thread to terminate");
1377		}
1378		}
1379		}
#	Line 692 | Line 1395 | public class JSR166TestCase extends Test
1395		public final void run() {
1396		try {
1397		realRun();
1398	<	} catch (Throwable t) {
1399	<	threadUnexpectedException(t);
1398	>	} catch (Throwable fail) {
1399	>	threadUnexpectedException(fail);
1400		}
1401		}
1402		}
#	Line 746 | Line 1449 | public class JSR166TestCase extends Test
1449		realRun();
1450		threadShouldThrow("InterruptedException");
1451		} catch (InterruptedException success) {
1452	<	} catch (Throwable t) {
1453	<	threadUnexpectedException(t);
1452	>	threadAssertFalse(Thread.interrupted());
1453	>	} catch (Throwable fail) {
1454	>	threadUnexpectedException(fail);
1455		}
1456		}
1457		}
#	Line 758 | Line 1462 | public class JSR166TestCase extends Test
1462		public final T call() {
1463		try {
1464		return realCall();
1465	<	} catch (Throwable t) {
1466	<	threadUnexpectedException(t);
1465	>	} catch (Throwable fail) {
1466	>	threadUnexpectedException(fail);
1467		return null;
1468		}
1469		}
#	Line 775 | Line 1479 | public class JSR166TestCase extends Test
1479		threadShouldThrow("InterruptedException");
1480		return result;
1481		} catch (InterruptedException success) {
1482	<	} catch (Throwable t) {
1483	<	threadUnexpectedException(t);
1482	>	threadAssertFalse(Thread.interrupted());
1483	>	} catch (Throwable fail) {
1484	>	threadUnexpectedException(fail);
1485		}
1486		return null;
1487		}
#	Line 793 | Line 1498 | public class JSR166TestCase extends Test
1498		public static final String TEST_STRING = "a test string";
1499
1500		public static class StringTask implements Callable<String> {
1501	<	public String call() { return TEST_STRING; }
1501	>	final String value;
1502	>	public StringTask() { this(TEST_STRING); }
1503	>	public StringTask(String value) { this.value = value; }
1504	>	public String call() { return value; }
1505		}
1506
1507		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 806 | Line 1514 | public class JSR166TestCase extends Test
1514		}};
1515		}
1516
1517	<	public Runnable awaiter(final CountDownLatch latch) {
1517	>	public Runnable countDowner(final CountDownLatch latch) {
1518		return new CheckedRunnable() {
1519		public void realRun() throws InterruptedException {
1520	<	latch.await();
1520	>	latch.countDown();
1521		}};
1522		}
1523
1524	+	class LatchAwaiter extends CheckedRunnable {
1525	+	static final int NEW = 0;
1526	+	static final int RUNNING = 1;
1527	+	static final int DONE = 2;
1528	+	final CountDownLatch latch;
1529	+	int state = NEW;
1530	+	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1531	+	public void realRun() throws InterruptedException {
1532	+	state = 1;
1533	+	await(latch);
1534	+	state = 2;
1535	+	}
1536	+	}
1537	+
1538	+	public LatchAwaiter awaiter(CountDownLatch latch) {
1539	+	return new LatchAwaiter(latch);
1540	+	}
1541	+
1542	+	public void await(CountDownLatch latch, long timeoutMillis) {
1543	+	try {
1544	+	if (!latch.await(timeoutMillis, MILLISECONDS))
1545	+	fail("timed out waiting for CountDownLatch for "
1546	+	+ (timeoutMillis/1000) + " sec");
1547	+	} catch (Throwable fail) {
1548	+	threadUnexpectedException(fail);
1549	+	}
1550	+	}
1551	+
1552	+	public void await(CountDownLatch latch) {
1553	+	await(latch, LONG_DELAY_MS);
1554	+	}
1555	+
1556	+	public void await(Semaphore semaphore) {
1557	+	try {
1558	+	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1559	+	fail("timed out waiting for Semaphore for "
1560	+	+ (LONG_DELAY_MS/1000) + " sec");
1561	+	} catch (Throwable fail) {
1562	+	threadUnexpectedException(fail);
1563	+	}
1564	+	}
1565	+
1566	+	//     /**
1567	+	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1568	+	//      */
1569	+	//     public void await(AtomicBoolean flag) {
1570	+	//         await(flag, LONG_DELAY_MS);
1571	+	//     }
1572	+
1573	+	//     /**
1574	+	//      * Spin-waits up to the specified timeout until flag becomes true.
1575	+	//      */
1576	+	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1577	+	//         long startTime = System.nanoTime();
1578	+	//         while (!flag.get()) {
1579	+	//             if (millisElapsedSince(startTime) > timeoutMillis)
1580	+	//                 throw new AssertionFailedError("timed out");
1581	+	//             Thread.yield();
1582	+	//         }
1583	+	//     }
1584	+
1585		public static class NPETask implements Callable<String> {
1586		public String call() { throw new NullPointerException(); }
1587		}
#	Line 823 | Line 1592 | public class JSR166TestCase extends Test
1592
1593		public class ShortRunnable extends CheckedRunnable {
1594		protected void realRun() throws Throwable {
1595	<	Thread.sleep(SHORT_DELAY_MS);
1595	>	delay(SHORT_DELAY_MS);
1596		}
1597		}
1598
1599		public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1600		protected void realRun() throws InterruptedException {
1601	<	Thread.sleep(SHORT_DELAY_MS);
1601	>	delay(SHORT_DELAY_MS);
1602		}
1603		}
1604
1605		public class SmallRunnable extends CheckedRunnable {
1606		protected void realRun() throws Throwable {
1607	<	Thread.sleep(SMALL_DELAY_MS);
1607	>	delay(SMALL_DELAY_MS);
1608		}
1609		}
1610
1611		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1612		protected void realRun() {
1613		try {
1614	<	Thread.sleep(SMALL_DELAY_MS);
1614	>	delay(SMALL_DELAY_MS);
1615		} catch (InterruptedException ok) {}
1616		}
1617		}
1618
1619		public class SmallCallable extends CheckedCallable {
1620		protected Object realCall() throws InterruptedException {
1621	<	Thread.sleep(SMALL_DELAY_MS);
1621	>	delay(SMALL_DELAY_MS);
1622		return Boolean.TRUE;
1623		}
1624		}
1625
1626		public class MediumRunnable extends CheckedRunnable {
1627		protected void realRun() throws Throwable {
1628	<	Thread.sleep(MEDIUM_DELAY_MS);
1628	>	delay(MEDIUM_DELAY_MS);
1629		}
1630		}
1631
1632		public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1633		protected void realRun() throws InterruptedException {
1634	<	Thread.sleep(MEDIUM_DELAY_MS);
1634	>	delay(MEDIUM_DELAY_MS);
1635		}
1636		}
1637
#	Line 870 | Line 1639 | public class JSR166TestCase extends Test
1639		return new CheckedRunnable() {
1640		protected void realRun() {
1641		try {
1642	<	Thread.sleep(timeoutMillis);
1642	>	delay(timeoutMillis);
1643		} catch (InterruptedException ok) {}
1644		}};
1645		}
#	Line 878 | Line 1647 | public class JSR166TestCase extends Test
1647		public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1648		protected void realRun() {
1649		try {
1650	<	Thread.sleep(MEDIUM_DELAY_MS);
1650	>	delay(MEDIUM_DELAY_MS);
1651		} catch (InterruptedException ok) {}
1652		}
1653		}
#	Line 886 | Line 1655 | public class JSR166TestCase extends Test
1655		public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1656		protected void realRun() {
1657		try {
1658	<	Thread.sleep(LONG_DELAY_MS);
1658	>	delay(LONG_DELAY_MS);
1659		} catch (InterruptedException ok) {}
1660		}
1661		}
#	Line 910 | Line 1679 | public class JSR166TestCase extends Test
1679		public boolean isDone() { return done; }
1680		public void run() {
1681		try {
1682	<	Thread.sleep(timeoutMillis);
1682	>	delay(timeoutMillis);
1683		done = true;
1684		} catch (InterruptedException ok) {}
1685		}
#	Line 921 | Line 1690 | public class JSR166TestCase extends Test
1690		public volatile boolean done = false;
1691		public void run() {
1692		try {
1693	<	Thread.sleep(SHORT_DELAY_MS);
1693	>	delay(SHORT_DELAY_MS);
1694		done = true;
1695		} catch (InterruptedException ok) {}
1696		}
#	Line 931 | Line 1700 | public class JSR166TestCase extends Test
1700		public volatile boolean done = false;
1701		public void run() {
1702		try {
1703	<	Thread.sleep(SMALL_DELAY_MS);
1703	>	delay(SMALL_DELAY_MS);
1704		done = true;
1705		} catch (InterruptedException ok) {}
1706		}
#	Line 941 | Line 1710 | public class JSR166TestCase extends Test
1710		public volatile boolean done = false;
1711		public void run() {
1712		try {
1713	<	Thread.sleep(MEDIUM_DELAY_MS);
1713	>	delay(MEDIUM_DELAY_MS);
1714		done = true;
1715		} catch (InterruptedException ok) {}
1716		}
#	Line 951 | Line 1720 | public class JSR166TestCase extends Test
1720		public volatile boolean done = false;
1721		public void run() {
1722		try {
1723	<	Thread.sleep(LONG_DELAY_MS);
1723	>	delay(LONG_DELAY_MS);
1724		done = true;
1725		} catch (InterruptedException ok) {}
1726		}
#	Line 968 | Line 1737 | public class JSR166TestCase extends Test
1737		public volatile boolean done = false;
1738		public Object call() {
1739		try {
1740	<	Thread.sleep(SMALL_DELAY_MS);
1740	>	delay(SMALL_DELAY_MS);
1741		done = true;
1742		} catch (InterruptedException ok) {}
1743		return Boolean.TRUE;
#	Line 981 | Line 1750 | public class JSR166TestCase extends Test
1750		public abstract class CheckedRecursiveAction extends RecursiveAction {
1751		protected abstract void realCompute() throws Throwable;
1752
1753	<	public final void compute() {
1753	>	@Override protected final void compute() {
1754		try {
1755		realCompute();
1756	<	} catch (Throwable t) {
1757	<	threadUnexpectedException(t);
1756	>	} catch (Throwable fail) {
1757	>	threadUnexpectedException(fail);
1758		}
1759		}
1760		}
#	Line 996 | Line 1765 | public class JSR166TestCase extends Test
1765		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1766		protected abstract T realCompute() throws Throwable;
1767
1768	<	public final T compute() {
1768	>	@Override protected final T compute() {
1769		try {
1770		return realCompute();
1771	<	} catch (Throwable t) {
1772	<	threadUnexpectedException(t);
1771	>	} catch (Throwable fail) {
1772	>	threadUnexpectedException(fail);
1773		return null;
1774		}
1775		}
#	Line 1015 | Line 1784 | public class JSR166TestCase extends Test
1784		}
1785
1786		/**
1787	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1788	<	* of throwing checked exceptions.
1787	>	* A CyclicBarrier that uses timed await and fails with
1788	>	* AssertionFailedErrors instead of throwing checked exceptions.
1789		*/
1790	<	public class CheckedBarrier extends CyclicBarrier {
1790	>	public static class CheckedBarrier extends CyclicBarrier {
1791		public CheckedBarrier(int parties) { super(parties); }
1792
1793		public int await() {
1794		try {
1795	<	return super.await();
1796	<	} catch (Exception e) {
1795	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1796	>	} catch (TimeoutException timedOut) {
1797	>	throw new AssertionFailedError("timed out");
1798	>	} catch (Exception fail) {
1799		AssertionFailedError afe =
1800	<	new AssertionFailedError("Unexpected exception: " + e);
1801	<	afe.initCause(e);
1800	>	new AssertionFailedError("Unexpected exception: " + fail);
1801	>	afe.initCause(fail);
1802		throw afe;
1803		}
1804		}
1805		}
1806
1807	<	public void checkEmpty(BlockingQueue q) {
1807	>	void checkEmpty(BlockingQueue q) {
1808		try {
1809		assertTrue(q.isEmpty());
1810		assertEquals(0, q.size());
#	Line 1055 | Line 1826 | public class JSR166TestCase extends Test
1826		q.remove();
1827		shouldThrow();
1828		} catch (NoSuchElementException success) {}
1829	<	} catch (InterruptedException ie) {
1830	<	threadUnexpectedException(ie);
1829	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1830	>	}
1831	>
1832	>	void assertSerialEquals(Object x, Object y) {
1833	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1834	>	}
1835	>
1836	>	void assertNotSerialEquals(Object x, Object y) {
1837	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1838	>	}
1839	>
1840	>	byte[] serialBytes(Object o) {
1841	>	try {
1842	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1843	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1844	>	oos.writeObject(o);
1845	>	oos.flush();
1846	>	oos.close();
1847	>	return bos.toByteArray();
1848	>	} catch (Throwable fail) {
1849	>	threadUnexpectedException(fail);
1850	>	return new byte[0];
1851	>	}
1852	>	}
1853	>
1854	>	void assertImmutable(final Object o) {
1855	>	if (o instanceof Collection) {
1856	>	assertThrows(
1857	>	UnsupportedOperationException.class,
1858	>	new Runnable() { public void run() {
1859	>	((Collection) o).add(null);}});
1860	>	}
1861	>	}
1862	>
1863	>	@SuppressWarnings("unchecked")
1864	>	<T> T serialClone(T o) {
1865	>	try {
1866	>	ObjectInputStream ois = new ObjectInputStream
1867	>	(new ByteArrayInputStream(serialBytes(o)));
1868	>	T clone = (T) ois.readObject();
1869	>	if (o == clone) assertImmutable(o);
1870	>	assertSame(o.getClass(), clone.getClass());
1871	>	return clone;
1872	>	} catch (Throwable fail) {
1873	>	threadUnexpectedException(fail);
1874	>	return null;
1875		}
1876		}
1877
1878	+	/**
1879	+	* A version of serialClone that leaves error handling (for
1880	+	* e.g. NotSerializableException) up to the caller.
1881	+	*/
1882	+	@SuppressWarnings("unchecked")
1883	+	<T> T serialClonePossiblyFailing(T o)
1884	+	throws ReflectiveOperationException, java.io.IOException {
1885	+	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1886	+	ObjectOutputStream oos = new ObjectOutputStream(bos);
1887	+	oos.writeObject(o);
1888	+	oos.flush();
1889	+	oos.close();
1890	+	ObjectInputStream ois = new ObjectInputStream
1891	+	(new ByteArrayInputStream(bos.toByteArray()));
1892	+	T clone = (T) ois.readObject();
1893	+	if (o == clone) assertImmutable(o);
1894	+	assertSame(o.getClass(), clone.getClass());
1895	+	return clone;
1896	+	}
1897	+
1898	+	/**
1899	+	* If o implements Cloneable and has a public clone method,
1900	+	* returns a clone of o, else null.
1901	+	*/
1902	+	@SuppressWarnings("unchecked")
1903	+	<T> T cloneableClone(T o) {
1904	+	if (!(o instanceof Cloneable)) return null;
1905	+	final T clone;
1906	+	try {
1907	+	clone = (T) o.getClass().getMethod("clone").invoke(o);
1908	+	} catch (NoSuchMethodException ok) {
1909	+	return null;
1910	+	} catch (ReflectiveOperationException unexpected) {
1911	+	throw new Error(unexpected);
1912	+	}
1913	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1914	+	assertSame(o.getClass(), clone.getClass());
1915	+	return clone;
1916	+	}
1917	+
1918	+	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1919	+	Runnable... throwingActions) {
1920	+	for (Runnable throwingAction : throwingActions) {
1921	+	boolean threw = false;
1922	+	try { throwingAction.run(); }
1923	+	catch (Throwable t) {
1924	+	threw = true;
1925	+	if (!expectedExceptionClass.isInstance(t)) {
1926	+	AssertionFailedError afe =
1927	+	new AssertionFailedError
1928	+	("Expected " + expectedExceptionClass.getName() +
1929	+	", got " + t.getClass().getName());
1930	+	afe.initCause(t);
1931	+	threadUnexpectedException(afe);
1932	+	}
1933	+	}
1934	+	if (!threw)
1935	+	shouldThrow(expectedExceptionClass.getName());
1936	+	}
1937	+	}
1938	+
1939	+	public void assertIteratorExhausted(Iterator<?> it) {
1940	+	try {
1941	+	it.next();
1942	+	shouldThrow();
1943	+	} catch (NoSuchElementException success) {}
1944	+	assertFalse(it.hasNext());
1945	+	}
1946	+
1947	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1948	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1949	+	}
1950	+
1951	+	public Runnable runnableThrowing(final RuntimeException ex) {
1952	+	return new Runnable() { public void run() { throw ex; }};
1953	+	}
1954	+
1955	+	/** A reusable thread pool to be shared by tests. */
1956	+	static final ExecutorService cachedThreadPool =
1957	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1958	+	1000L, MILLISECONDS,
1959	+	new SynchronousQueue<Runnable>());
1960	+
1961	+	static <T> void shuffle(T[] array) {
1962	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1963	+	}
1964		}

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