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 1.76 by dl, Fri May 6 11:22:07 2011 UTC vs.
Revision 1.247 by jsr166, Sun Jul 22 21:37:31 2018 UTC

#	Line 1 | Line 1
1		/*
2	<	* Written by Doug Lea with assistance from members of JCP JSR-166
3	<	* Expert Group and released to the public domain, as explained at
2	>	* Written by Doug Lea and Martin Buchholz with assistance from
3	>	* members of JCP JSR-166 Expert Group and released to the public
4	>	* domain, as explained at
5		* http://creativecommons.org/publicdomain/zero/1.0/
6		* Other contributors include Andrew Wright, Jeffrey Hayes,
7		* Pat Fisher, Mike Judd.
8		*/
9
10	<	import junit.framework.*;
11	<	import java.util.Arrays;
12	<	import java.util.NoSuchElementException;
13	<	import java.util.PropertyPermission;
14	<	import java.util.concurrent.*;
15	<	import java.util.concurrent.atomic.AtomicReference;
10	>	/*
11	>	* @test
12	>	* @summary JSR-166 tck tests, in a number of variations.
13	>	*          The first is the conformance testing variant,
14	>	*          while others also test implementation details.
15	>	* @build *
16	>	* @modules java.management
17	>	* @run junit/othervm/timeout=1000 JSR166TestCase
18	>	* @run junit/othervm/timeout=1000
19	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
20	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
21	>	*      -Djsr166.testImplementationDetails=true
22	>	*      JSR166TestCase
23	>	* @run junit/othervm/timeout=1000
24	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
25	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
26	>	*      -Djsr166.testImplementationDetails=true
27	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=0
28	>	*      JSR166TestCase
29	>	* @run junit/othervm/timeout=1000
30	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
31	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
32	>	*      -Djsr166.testImplementationDetails=true
33	>	*      -Djava.util.concurrent.ForkJoinPool.common.parallelism=1
34	>	*      -Djava.util.secureRandomSeed=true
35	>	*      JSR166TestCase
36	>	* @run junit/othervm/timeout=1000/policy=tck.policy
37	>	*      --add-opens java.base/java.util.concurrent=ALL-UNNAMED
38	>	*      --add-opens java.base/java.lang=ALL-UNNAMED
39	>	*      -Djsr166.testImplementationDetails=true
40	>	*      JSR166TestCase
41	>	*/
42	>
43		import static java.util.concurrent.TimeUnit.MILLISECONDS;
44	+	import static java.util.concurrent.TimeUnit.MINUTES;
45		import static java.util.concurrent.TimeUnit.NANOSECONDS;
46	+
47	+	import java.io.ByteArrayInputStream;
48	+	import java.io.ByteArrayOutputStream;
49	+	import java.io.ObjectInputStream;
50	+	import java.io.ObjectOutputStream;
51	+	import java.lang.management.ManagementFactory;
52	+	import java.lang.management.ThreadInfo;
53	+	import java.lang.management.ThreadMXBean;
54	+	import java.lang.reflect.Constructor;
55	+	import java.lang.reflect.Method;
56	+	import java.lang.reflect.Modifier;
57		import java.security.CodeSource;
58		import java.security.Permission;
59		import java.security.PermissionCollection;
#	Line 21 | Line 61 | import java.security.Permissions;
61		import java.security.Policy;
62		import java.security.ProtectionDomain;
63		import java.security.SecurityPermission;
64	+	import java.util.ArrayList;
65	+	import java.util.Arrays;
66	+	import java.util.Collection;
67	+	import java.util.Collections;
68	+	import java.util.Date;
69	+	import java.util.Deque;
70	+	import java.util.Enumeration;
71	+	import java.util.HashSet;
72	+	import java.util.Iterator;
73	+	import java.util.List;
74	+	import java.util.NoSuchElementException;
75	+	import java.util.PropertyPermission;
76	+	import java.util.Set;
77	+	import java.util.concurrent.BlockingQueue;
78	+	import java.util.concurrent.Callable;
79	+	import java.util.concurrent.CountDownLatch;
80	+	import java.util.concurrent.CyclicBarrier;
81	+	import java.util.concurrent.ExecutionException;
82	+	import java.util.concurrent.Executor;
83	+	import java.util.concurrent.Executors;
84	+	import java.util.concurrent.ExecutorService;
85	+	import java.util.concurrent.ForkJoinPool;
86	+	import java.util.concurrent.Future;
87	+	import java.util.concurrent.FutureTask;
88	+	import java.util.concurrent.RecursiveAction;
89	+	import java.util.concurrent.RecursiveTask;
90	+	import java.util.concurrent.RejectedExecutionException;
91	+	import java.util.concurrent.RejectedExecutionHandler;
92	+	import java.util.concurrent.Semaphore;
93	+	import java.util.concurrent.ScheduledExecutorService;
94	+	import java.util.concurrent.ScheduledFuture;
95	+	import java.util.concurrent.SynchronousQueue;
96	+	import java.util.concurrent.ThreadFactory;
97	+	import java.util.concurrent.ThreadLocalRandom;
98	+	import java.util.concurrent.ThreadPoolExecutor;
99	+	import java.util.concurrent.TimeUnit;
100	+	import java.util.concurrent.TimeoutException;
101	+	import java.util.concurrent.atomic.AtomicBoolean;
102	+	import java.util.concurrent.atomic.AtomicReference;
103	+	import java.util.regex.Pattern;
104	+
105	+	import junit.framework.Test;
106	+	import junit.framework.TestCase;
107	+	import junit.framework.TestResult;
108	+	import junit.framework.TestSuite;
109
110		/**
111		* Base class for JSR166 Junit TCK tests.  Defines some constants,
#	Line 32 | Line 117 | import java.security.SecurityPermission;
117		*
118		* <ol>
119		*
120	<	* <li> All assertions in code running in generated threads must use
120	>	* <li>All assertions in code running in generated threads must use
121		* the forms {@link #threadFail}, {@link #threadAssertTrue}, {@link
122		* #threadAssertEquals}, or {@link #threadAssertNull}, (not
123		* {@code fail}, {@code assertTrue}, etc.) It is OK (but not
124		* particularly recommended) for other code to use these forms too.
125		* Only the most typically used JUnit assertion methods are defined
126	<	* this way, but enough to live with.</li>
126	>	* this way, but enough to live with.
127		*
128	<	* <li> If you override {@link #setUp} or {@link #tearDown}, make sure
128	>	* <li>If you override {@link #setUp} or {@link #tearDown}, make sure
129		* to invoke {@code super.setUp} and {@code super.tearDown} within
130		* them. These methods are used to clear and check for thread
131	<	* assertion failures.</li>
131	>	* assertion failures.
132		*
133		* <li>All delays and timeouts must use one of the constants {@code
134		* SHORT_DELAY_MS}, {@code SMALL_DELAY_MS}, {@code MEDIUM_DELAY_MS},
#	Line 54 | Line 139 | import java.security.SecurityPermission;
139		* is always discriminable as larger than SHORT and smaller than
140		* MEDIUM.  And so on. These constants are set to conservative values,
141		* but even so, if there is ever any doubt, they can all be increased
142	<	* in one spot to rerun tests on slower platforms.</li>
142	>	* in one spot to rerun tests on slower platforms.
143		*
144	<	* <li> All threads generated must be joined inside each test case
144	>	* <li>All threads generated must be joined inside each test case
145		* method (or {@code fail} to do so) before returning from the
146		* method. The {@code joinPool} method can be used to do this when
147	<	* using Executors.</li>
147	>	* using Executors.
148		*
149		* </ol>
150		*
151	<	* <p> <b>Other notes</b>
151	>	* <p><b>Other notes</b>
152		* <ul>
153		*
154	<	* <li> Usually, there is one testcase method per JSR166 method
154	>	* <li>Usually, there is one testcase method per JSR166 method
155		* covering "normal" operation, and then as many exception-testing
156		* methods as there are exceptions the method can throw. Sometimes
157		* there are multiple tests per JSR166 method when the different
158		* "normal" behaviors differ significantly. And sometimes testcases
159	<	* cover multiple methods when they cannot be tested in
75	<	* isolation.</li>
159	>	* cover multiple methods when they cannot be tested in isolation.
160		*
161	<	* <li> The documentation style for testcases is to provide as javadoc
161	>	* <li>The documentation style for testcases is to provide as javadoc
162		* a simple sentence or two describing the property that the testcase
163		* method purports to test. The javadocs do not say anything about how
164	<	* the property is tested. To find out, read the code.</li>
164	>	* the property is tested. To find out, read the code.
165		*
166	<	* <li> These tests are "conformance tests", and do not attempt to
166	>	* <li>These tests are "conformance tests", and do not attempt to
167		* test throughput, latency, scalability or other performance factors
168		* (see the separate "jtreg" tests for a set intended to check these
169		* for the most central aspects of functionality.) So, most tests use
170		* the smallest sensible numbers of threads, collection sizes, etc
171	<	* needed to check basic conformance.</li>
171	>	* needed to check basic conformance.
172		*
173		* <li>The test classes currently do not declare inclusion in
174		* any particular package to simplify things for people integrating
175	<	* them in TCK test suites.</li>
175	>	* them in TCK test suites.
176		*
177	<	* <li> As a convenience, the {@code main} of this class (JSR166TestCase)
178	<	* runs all JSR166 unit tests.</li>
177	>	* <li>As a convenience, the {@code main} of this class (JSR166TestCase)
178	>	* runs all JSR166 unit tests.
179		*
180		* </ul>
181		*/
#	Line 103 | Line 187 | public class JSR166TestCase extends Test
187		Boolean.getBoolean("jsr166.expensiveTests");
188
189		/**
190	+	* If true, also run tests that are not part of the official tck
191	+	* because they test unspecified implementation details.
192	+	*/
193	+	protected static final boolean testImplementationDetails =
194	+	Boolean.getBoolean("jsr166.testImplementationDetails");
195	+
196	+	/**
197		* If true, report on stdout all "slow" tests, that is, ones that
198		* take more than profileThreshold milliseconds to execute.
199		*/
#	Line 116 | Line 207 | public class JSR166TestCase extends Test
207		private static final long profileThreshold =
208		Long.getLong("jsr166.profileThreshold", 100);
209
210	+	/**
211	+	* The number of repetitions per test (for tickling rare bugs).
212	+	*/
213	+	private static final int runsPerTest =
214	+	Integer.getInteger("jsr166.runsPerTest", 1);
215	+
216	+	/**
217	+	* The number of repetitions of the test suite (for finding leaks?).
218	+	*/
219	+	private static final int suiteRuns =
220	+	Integer.getInteger("jsr166.suiteRuns", 1);
221	+
222	+	/**
223	+	* Returns the value of the system property, or NaN if not defined.
224	+	*/
225	+	private static float systemPropertyValue(String name) {
226	+	String floatString = System.getProperty(name);
227	+	if (floatString == null)
228	+	return Float.NaN;
229	+	try {
230	+	return Float.parseFloat(floatString);
231	+	} catch (NumberFormatException ex) {
232	+	throw new IllegalArgumentException(
233	+	String.format("Bad float value in system property %s=%s",
234	+	name, floatString));
235	+	}
236	+	}
237	+
238	+	/**
239	+	* The scaling factor to apply to standard delays used in tests.
240	+	* May be initialized from any of:
241	+	* - the "jsr166.delay.factor" system property
242	+	* - the "test.timeout.factor" system property (as used by jtreg)
243	+	*   See: http://openjdk.java.net/jtreg/tag-spec.html
244	+	* - hard-coded fuzz factor when using a known slowpoke VM
245	+	*/
246	+	private static final float delayFactor = delayFactor();
247	+
248	+	private static float delayFactor() {
249	+	float x;
250	+	if (!Float.isNaN(x = systemPropertyValue("jsr166.delay.factor")))
251	+	return x;
252	+	if (!Float.isNaN(x = systemPropertyValue("test.timeout.factor")))
253	+	return x;
254	+	String prop = System.getProperty("java.vm.version");
255	+	if (prop != null && prop.matches(".*debug.*"))
256	+	return 4.0f; // How much slower is fastdebug than product?!
257	+	return 1.0f;
258	+	}
259	+
260	+	public JSR166TestCase() { super(); }
261	+	public JSR166TestCase(String name) { super(name); }
262	+
263	+	/**
264	+	* A filter for tests to run, matching strings of the form
265	+	* methodName(className), e.g. "testInvokeAll5(ForkJoinPoolTest)"
266	+	* Usefully combined with jsr166.runsPerTest.
267	+	*/
268	+	private static final Pattern methodFilter = methodFilter();
269	+
270	+	private static Pattern methodFilter() {
271	+	String regex = System.getProperty("jsr166.methodFilter");
272	+	return (regex == null) ? null : Pattern.compile(regex);
273	+	}
274	+
275	+	// Instrumentation to debug very rare, but very annoying hung test runs.
276	+	static volatile TestCase currentTestCase;
277	+	// static volatile int currentRun = 0;
278	+	static {
279	+	Runnable checkForWedgedTest = new Runnable() { public void run() {
280	+	// Avoid spurious reports with enormous runsPerTest.
281	+	// A single test case run should never take more than 1 second.
282	+	// But let's cap it at the high end too ...
283	+	final int timeoutMinutes =
284	+	Math.min(15, Math.max(runsPerTest / 60, 1));
285	+	for (TestCase lastTestCase = currentTestCase;;) {
286	+	try { MINUTES.sleep(timeoutMinutes); }
287	+	catch (InterruptedException unexpected) { break; }
288	+	if (lastTestCase == currentTestCase) {
289	+	System.err.printf(
290	+	"Looks like we're stuck running test: %s%n",
291	+	lastTestCase);
292	+	//                     System.err.printf(
293	+	//                         "Looks like we're stuck running test: %s (%d/%d)%n",
294	+	//                         lastTestCase, currentRun, runsPerTest);
295	+	//                     System.err.println("availableProcessors=" +
296	+	//                         Runtime.getRuntime().availableProcessors());
297	+	//                     System.err.printf("cpu model = %s%n", cpuModel());
298	+	dumpTestThreads();
299	+	// one stack dump is probably enough; more would be spam
300	+	break;
301	+	}
302	+	lastTestCase = currentTestCase;
303	+	}}};
304	+	Thread thread = new Thread(checkForWedgedTest, "checkForWedgedTest");
305	+	thread.setDaemon(true);
306	+	thread.start();
307	+	}
308	+
309	+	//     public static String cpuModel() {
310	+	//         try {
311	+	//             java.util.regex.Matcher matcher
312	+	//               = Pattern.compile("model name\\s*: (.*)")
313	+	//                 .matcher(new String(
314	+	//                     java.nio.file.Files.readAllBytes(
315	+	//                         java.nio.file.Paths.get("/proc/cpuinfo")), "UTF-8"));
316	+	//             matcher.find();
317	+	//             return matcher.group(1);
318	+	//         } catch (Exception ex) { return null; }
319	+	//     }
320	+
321	+	public void runBare() throws Throwable {
322	+	currentTestCase = this;
323	+	if (methodFilter == null
324	+	|| methodFilter.matcher(toString()).find())
325	+	super.runBare();
326	+	}
327	+
328		protected void runTest() throws Throwable {
329	<	if (profileTests)
330	<	runTestProfiled();
331	<	else
332	<	super.runTest();
329	>	for (int i = 0; i < runsPerTest; i++) {
330	>	// currentRun = i;
331	>	if (profileTests)
332	>	runTestProfiled();
333	>	else
334	>	super.runTest();
335	>	}
336		}
337
338		protected void runTestProfiled() throws Throwable {
339	<	long t0 = System.nanoTime();
340	<	try {
339	>	for (int i = 0; i < 2; i++) {
340	>	long startTime = System.nanoTime();
341		super.runTest();
342	<	} finally {
343	<	long elapsedMillis =
344	<	(System.nanoTime() - t0) / (1000L * 1000L);
345	<	if (elapsedMillis >= profileThreshold)
342	>	long elapsedMillis = millisElapsedSince(startTime);
343	>	if (elapsedMillis < profileThreshold)
344	>	break;
345	>	// Never report first run of any test; treat it as a
346	>	// warmup run, notably to trigger all needed classloading,
347	>	if (i > 0)
348		System.out.printf("%n%s: %d%n", toString(), elapsedMillis);
349		}
350		}
351
352		/**
353	<	* Runs all JSR166 unit tests using junit.textui.TestRunner
353	>	* Runs all JSR166 unit tests using junit.textui.TestRunner.
354		*/
355		public static void main(String[] args) {
356	+	main(suite(), args);
357	+	}
358	+
359	+	static class PithyResultPrinter extends junit.textui.ResultPrinter {
360	+	PithyResultPrinter(java.io.PrintStream writer) { super(writer); }
361	+	long runTime;
362	+	public void startTest(Test test) {}
363	+	protected void printHeader(long runTime) {
364	+	this.runTime = runTime; // defer printing for later
365	+	}
366	+	protected void printFooter(TestResult result) {
367	+	if (result.wasSuccessful()) {
368	+	getWriter().println("OK (" + result.runCount() + " tests)"
369	+	+ "  Time: " + elapsedTimeAsString(runTime));
370	+	} else {
371	+	getWriter().println("Time: " + elapsedTimeAsString(runTime));
372	+	super.printFooter(result);
373	+	}
374	+	}
375	+	}
376	+
377	+	/**
378	+	* Returns a TestRunner that doesn't bother with unnecessary
379	+	* fluff, like printing a "." for each test case.
380	+	*/
381	+	static junit.textui.TestRunner newPithyTestRunner() {
382	+	junit.textui.TestRunner runner = new junit.textui.TestRunner();
383	+	runner.setPrinter(new PithyResultPrinter(System.out));
384	+	return runner;
385	+	}
386	+
387	+	/**
388	+	* Runs all unit tests in the given test suite.
389	+	* Actual behavior influenced by jsr166.* system properties.
390	+	*/
391	+	static void main(Test suite, String[] args) {
392		if (useSecurityManager) {
393		System.err.println("Setting a permissive security manager");
394		Policy.setPolicy(permissivePolicy());
395		System.setSecurityManager(new SecurityManager());
396		}
397	<	int iters = (args.length == 0) ? 1 : Integer.parseInt(args[0]);
398	<
399	<	Test s = suite();
400	<	for (int i = 0; i < iters; ++i) {
151	<	junit.textui.TestRunner.run(s);
397	>	for (int i = 0; i < suiteRuns; i++) {
398	>	TestResult result = newPithyTestRunner().doRun(suite);
399	>	if (!result.wasSuccessful())
400	>	System.exit(1);
401		System.gc();
402		System.runFinalization();
403		}
155	–	System.exit(0);
404		}
405
406		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 168 | Line 416 | public class JSR166TestCase extends Test
416		return suite;
417		}
418
419	+	public static void addNamedTestClasses(TestSuite suite,
420	+	String... testClassNames) {
421	+	for (String testClassName : testClassNames) {
422	+	try {
423	+	Class<?> testClass = Class.forName(testClassName);
424	+	Method m = testClass.getDeclaredMethod("suite");
425	+	suite.addTest(newTestSuite((Test)m.invoke(null)));
426	+	} catch (ReflectiveOperationException e) {
427	+	throw new AssertionError("Missing test class", e);
428	+	}
429	+	}
430	+	}
431	+
432	+	public static final double JAVA_CLASS_VERSION;
433	+	public static final String JAVA_SPECIFICATION_VERSION;
434	+	static {
435	+	try {
436	+	JAVA_CLASS_VERSION = java.security.AccessController.doPrivileged(
437	+	new java.security.PrivilegedAction<Double>() {
438	+	public Double run() {
439	+	return Double.valueOf(System.getProperty("java.class.version"));}});
440	+	JAVA_SPECIFICATION_VERSION = java.security.AccessController.doPrivileged(
441	+	new java.security.PrivilegedAction<String>() {
442	+	public String run() {
443	+	return System.getProperty("java.specification.version");}});
444	+	} catch (Throwable t) {
445	+	throw new Error(t);
446	+	}
447	+	}
448	+
449	+	public static boolean atLeastJava6()  { return JAVA_CLASS_VERSION >= 50.0; }
450	+	public static boolean atLeastJava7()  { return JAVA_CLASS_VERSION >= 51.0; }
451	+	public static boolean atLeastJava8()  { return JAVA_CLASS_VERSION >= 52.0; }
452	+	public static boolean atLeastJava9()  { return JAVA_CLASS_VERSION >= 53.0; }
453	+	public static boolean atLeastJava10() { return JAVA_CLASS_VERSION >= 54.0; }
454	+	public static boolean atLeastJava11() { return JAVA_CLASS_VERSION >= 55.0; }
455	+
456		/**
457		* Collects all JSR166 unit tests as one suite.
458		*/
459		public static Test suite() {
460	<	return newTestSuite(
460	>	// Java7+ test classes
461	>	TestSuite suite = newTestSuite(
462		ForkJoinPoolTest.suite(),
463		ForkJoinTaskTest.suite(),
464		RecursiveActionTest.suite(),
#	Line 186 | Line 472 | public class JSR166TestCase extends Test
472		AbstractQueuedLongSynchronizerTest.suite(),
473		ArrayBlockingQueueTest.suite(),
474		ArrayDequeTest.suite(),
475	+	ArrayListTest.suite(),
476		AtomicBooleanTest.suite(),
477		AtomicIntegerArrayTest.suite(),
478		AtomicIntegerFieldUpdaterTest.suite(),
#	Line 208 | Line 495 | public class JSR166TestCase extends Test
495		CopyOnWriteArrayListTest.suite(),
496		CopyOnWriteArraySetTest.suite(),
497		CountDownLatchTest.suite(),
498	+	CountedCompleterTest.suite(),
499		CyclicBarrierTest.suite(),
500		DelayQueueTest.suite(),
501		EntryTest.suite(),
#	Line 236 | Line 524 | public class JSR166TestCase extends Test
524		TreeMapTest.suite(),
525		TreeSetTest.suite(),
526		TreeSubMapTest.suite(),
527	<	TreeSubSetTest.suite());
527	>	TreeSubSetTest.suite(),
528	>	VectorTest.suite());
529	>
530	>	// Java8+ test classes
531	>	if (atLeastJava8()) {
532	>	String[] java8TestClassNames = {
533	>	"ArrayDeque8Test",
534	>	"Atomic8Test",
535	>	"CompletableFutureTest",
536	>	"ConcurrentHashMap8Test",
537	>	"CountedCompleter8Test",
538	>	"DoubleAccumulatorTest",
539	>	"DoubleAdderTest",
540	>	"ForkJoinPool8Test",
541	>	"ForkJoinTask8Test",
542	>	"HashMapTest",
543	>	"LinkedBlockingDeque8Test",
544	>	"LinkedBlockingQueue8Test",
545	>	"LongAccumulatorTest",
546	>	"LongAdderTest",
547	>	"SplittableRandomTest",
548	>	"StampedLockTest",
549	>	"SubmissionPublisherTest",
550	>	"ThreadLocalRandom8Test",
551	>	"TimeUnit8Test",
552	>	};
553	>	addNamedTestClasses(suite, java8TestClassNames);
554	>	}
555	>
556	>	// Java9+ test classes
557	>	if (atLeastJava9()) {
558	>	String[] java9TestClassNames = {
559	>	"AtomicBoolean9Test",
560	>	"AtomicInteger9Test",
561	>	"AtomicIntegerArray9Test",
562	>	"AtomicLong9Test",
563	>	"AtomicLongArray9Test",
564	>	"AtomicReference9Test",
565	>	"AtomicReferenceArray9Test",
566	>	"ExecutorCompletionService9Test",
567	>	"ForkJoinPool9Test",
568	>	};
569	>	addNamedTestClasses(suite, java9TestClassNames);
570	>	}
571	>
572	>	return suite;
573		}
574
575	+	/** Returns list of junit-style test method names in given class. */
576	+	public static ArrayList<String> testMethodNames(Class<?> testClass) {
577	+	Method[] methods = testClass.getDeclaredMethods();
578	+	ArrayList<String> names = new ArrayList<>(methods.length);
579	+	for (Method method : methods) {
580	+	if (method.getName().startsWith("test")
581	+	&& Modifier.isPublic(method.getModifiers())
582	+	// method.getParameterCount() requires jdk8+
583	+	&& method.getParameterTypes().length == 0) {
584	+	names.add(method.getName());
585	+	}
586	+	}
587	+	return names;
588	+	}
589	+
590	+	/**
591	+	* Returns junit-style testSuite for the given test class, but
592	+	* parameterized by passing extra data to each test.
593	+	*/
594	+	public static <ExtraData> Test parameterizedTestSuite
595	+	(Class<? extends JSR166TestCase> testClass,
596	+	Class<ExtraData> dataClass,
597	+	ExtraData data) {
598	+	try {
599	+	TestSuite suite = new TestSuite();
600	+	Constructor c =
601	+	testClass.getDeclaredConstructor(dataClass, String.class);
602	+	for (String methodName : testMethodNames(testClass))
603	+	suite.addTest((Test) c.newInstance(data, methodName));
604	+	return suite;
605	+	} catch (ReflectiveOperationException e) {
606	+	throw new AssertionError(e);
607	+	}
608	+	}
609	+
610	+	/**
611	+	* Returns junit-style testSuite for the jdk8 extension of the
612	+	* given test class, but parameterized by passing extra data to
613	+	* each test.  Uses reflection to allow compilation in jdk7.
614	+	*/
615	+	public static <ExtraData> Test jdk8ParameterizedTestSuite
616	+	(Class<? extends JSR166TestCase> testClass,
617	+	Class<ExtraData> dataClass,
618	+	ExtraData data) {
619	+	if (atLeastJava8()) {
620	+	String name = testClass.getName();
621	+	String name8 = name.replaceAll("Test$", "8Test");
622	+	if (name.equals(name8)) throw new AssertionError(name);
623	+	try {
624	+	return (Test)
625	+	Class.forName(name8)
626	+	.getMethod("testSuite", dataClass)
627	+	.invoke(null, data);
628	+	} catch (ReflectiveOperationException e) {
629	+	throw new AssertionError(e);
630	+	}
631	+	} else {
632	+	return new TestSuite();
633	+	}
634	+	}
635	+
636	+	// Delays for timing-dependent tests, in milliseconds.
637
638		public static long SHORT_DELAY_MS;
639		public static long SMALL_DELAY_MS;
640		public static long MEDIUM_DELAY_MS;
641		public static long LONG_DELAY_MS;
642
643	+	private static final long RANDOM_TIMEOUT;
644	+	private static final long RANDOM_EXPIRED_TIMEOUT;
645	+	private static final TimeUnit RANDOM_TIMEUNIT;
646	+	static {
647	+	ThreadLocalRandom rnd = ThreadLocalRandom.current();
648	+	long[] timeouts = { Long.MIN_VALUE, -1, 0, 1, Long.MAX_VALUE };
649	+	RANDOM_TIMEOUT = timeouts[rnd.nextInt(timeouts.length)];
650	+	RANDOM_EXPIRED_TIMEOUT = timeouts[rnd.nextInt(3)];
651	+	TimeUnit[] timeUnits = TimeUnit.values();
652	+	RANDOM_TIMEUNIT = timeUnits[rnd.nextInt(timeUnits.length)];
653	+	}
654
655		/**
656	<	* Returns the shortest timed delay. This could
657	<	* be reimplemented to use for example a Property.
656	>	* Returns a timeout for use when any value at all will do.
657	>	*/
658	>	static long randomTimeout() { return RANDOM_TIMEOUT; }
659	>
660	>	/**
661	>	* Returns a timeout that means "no waiting", i.e. not positive.
662	>	*/
663	>	static long randomExpiredTimeout() { return RANDOM_EXPIRED_TIMEOUT; }
664	>
665	>	/**
666	>	* Returns a random non-null TimeUnit.
667	>	*/
668	>	static TimeUnit randomTimeUnit() { return RANDOM_TIMEUNIT; }
669	>
670	>	/**
671	>	* Returns the shortest timed delay. This can be scaled up for
672	>	* slow machines using the jsr166.delay.factor system property,
673	>	* or via jtreg's -timeoutFactor: flag.
674	>	* http://openjdk.java.net/jtreg/command-help.html
675		*/
676		protected long getShortDelay() {
677	<	return 50;
677	>	return (long) (50 * delayFactor);
678		}
679
257	–
680		/**
681		* Sets delays as multiples of SHORT_DELAY.
682		*/
#	Line 265 | Line 687 | public class JSR166TestCase extends Test
687		LONG_DELAY_MS   = SHORT_DELAY_MS * 200;
688		}
689
690	+	private static final long TIMEOUT_DELAY_MS
691	+	= (long) (12.0 * Math.cbrt(delayFactor));
692	+
693	+	/**
694	+	* Returns a timeout in milliseconds to be used in tests that verify
695	+	* that operations block or time out.  We want this to be longer
696	+	* than the OS scheduling quantum, but not too long, so don't scale
697	+	* linearly with delayFactor; we use "crazy" cube root instead.
698	+	*/
699	+	static long timeoutMillis() {
700	+	return TIMEOUT_DELAY_MS;
701	+	}
702	+
703	+	/**
704	+	* Returns a new Date instance representing a time at least
705	+	* delayMillis milliseconds in the future.
706	+	*/
707	+	Date delayedDate(long delayMillis) {
708	+	// Add 1 because currentTimeMillis is known to round into the past.
709	+	return new Date(System.currentTimeMillis() + delayMillis + 1);
710	+	}
711	+
712		/**
713		* The first exception encountered if any threadAssertXXX method fails.
714		*/
715		private final AtomicReference<Throwable> threadFailure
716	<	= new AtomicReference<Throwable>(null);
716	>	= new AtomicReference<>(null);
717
718		/**
719		* Records an exception so that it can be rethrown later in the test
#	Line 278 | Line 722 | public class JSR166TestCase extends Test
722		* the same test have no effect.
723		*/
724		public void threadRecordFailure(Throwable t) {
725	+	System.err.println(t);
726	+	dumpTestThreads();
727		threadFailure.compareAndSet(null, t);
728		}
729
#	Line 285 | Line 731 | public class JSR166TestCase extends Test
731		setDelays();
732		}
733
734	+	void tearDownFail(String format, Object... args) {
735	+	String msg = toString() + ": " + String.format(format, args);
736	+	System.err.println(msg);
737	+	dumpTestThreads();
738	+	throw new AssertionError(msg);
739	+	}
740	+
741		/**
742	+	* Extra checks that get done for all test cases.
743	+	*
744		* Triggers test case failure if any thread assertions have failed,
745		* by rethrowing, in the test harness thread, any exception recorded
746		* earlier by threadRecordFailure.
747	+	*
748	+	* Triggers test case failure if interrupt status is set in the main thread.
749		*/
750		public void tearDown() throws Exception {
751		Throwable t = threadFailure.getAndSet(null);
#	Line 299 | Line 756 | public class JSR166TestCase extends Test
756		throw (RuntimeException) t;
757		else if (t instanceof Exception)
758		throw (Exception) t;
759	<	else {
760	<	AssertionFailedError afe =
761	<	new AssertionFailedError(t.toString());
762	<	afe.initCause(t);
763	<	throw afe;
759	>	else
760	>	throw new AssertionError(t.toString(), t);
761	>	}
762	>
763	>	if (Thread.interrupted())
764	>	tearDownFail("interrupt status set in main thread");
765	>
766	>	checkForkJoinPoolThreadLeaks();
767	>	}
768	>
769	>	/**
770	>	* Finds missing PoolCleaners
771	>	*/
772	>	void checkForkJoinPoolThreadLeaks() throws InterruptedException {
773	>	Thread[] survivors = new Thread[7];
774	>	int count = Thread.enumerate(survivors);
775	>	for (int i = 0; i < count; i++) {
776	>	Thread thread = survivors[i];
777	>	String name = thread.getName();
778	>	if (name.startsWith("ForkJoinPool-")) {
779	>	// give thread some time to terminate
780	>	thread.join(LONG_DELAY_MS);
781	>	if (thread.isAlive())
782	>	tearDownFail("Found leaked ForkJoinPool thread thread=%s",
783	>	thread);
784		}
785		}
786	+
787	+	if (!ForkJoinPool.commonPool()
788	+	.awaitQuiescence(LONG_DELAY_MS, MILLISECONDS))
789	+	tearDownFail("ForkJoin common pool thread stuck");
790		}
791
792		/**
793		* Just like fail(reason), but additionally recording (using
794	<	* threadRecordFailure) any AssertionFailedError thrown, so that
795	<	* the current testcase will fail.
794	>	* threadRecordFailure) any AssertionError thrown, so that the
795	>	* current testcase will fail.
796		*/
797		public void threadFail(String reason) {
798		try {
799		fail(reason);
800	<	} catch (AssertionFailedError t) {
801	<	threadRecordFailure(t);
802	<	fail(reason);
800	>	} catch (AssertionError fail) {
801	>	threadRecordFailure(fail);
802	>	throw fail;
803		}
804		}
805
806		/**
807		* Just like assertTrue(b), but additionally recording (using
808	<	* threadRecordFailure) any AssertionFailedError thrown, so that
809	<	* the current testcase will fail.
808	>	* threadRecordFailure) any AssertionError thrown, so that the
809	>	* current testcase will fail.
810		*/
811		public void threadAssertTrue(boolean b) {
812		try {
813		assertTrue(b);
814	<	} catch (AssertionFailedError t) {
815	<	threadRecordFailure(t);
816	<	throw t;
814	>	} catch (AssertionError fail) {
815	>	threadRecordFailure(fail);
816	>	throw fail;
817		}
818		}
819
820		/**
821		* Just like assertFalse(b), but additionally recording (using
822	<	* threadRecordFailure) any AssertionFailedError thrown, so that
823	<	* the current testcase will fail.
822	>	* threadRecordFailure) any AssertionError thrown, so that the
823	>	* current testcase will fail.
824		*/
825		public void threadAssertFalse(boolean b) {
826		try {
827		assertFalse(b);
828	<	} catch (AssertionFailedError t) {
829	<	threadRecordFailure(t);
830	<	throw t;
828	>	} catch (AssertionError fail) {
829	>	threadRecordFailure(fail);
830	>	throw fail;
831		}
832		}
833
834		/**
835		* Just like assertNull(x), but additionally recording (using
836	<	* threadRecordFailure) any AssertionFailedError thrown, so that
837	<	* the current testcase will fail.
836	>	* threadRecordFailure) any AssertionError thrown, so that the
837	>	* current testcase will fail.
838		*/
839		public void threadAssertNull(Object x) {
840		try {
841		assertNull(x);
842	<	} catch (AssertionFailedError t) {
843	<	threadRecordFailure(t);
844	<	throw t;
842	>	} catch (AssertionError fail) {
843	>	threadRecordFailure(fail);
844	>	throw fail;
845		}
846		}
847
848		/**
849		* Just like assertEquals(x, y), but additionally recording (using
850	<	* threadRecordFailure) any AssertionFailedError thrown, so that
851	<	* the current testcase will fail.
850	>	* threadRecordFailure) any AssertionError thrown, so that the
851	>	* current testcase will fail.
852		*/
853		public void threadAssertEquals(long x, long y) {
854		try {
855		assertEquals(x, y);
856	<	} catch (AssertionFailedError t) {
857	<	threadRecordFailure(t);
858	<	throw t;
856	>	} catch (AssertionError fail) {
857	>	threadRecordFailure(fail);
858	>	throw fail;
859		}
860		}
861
862		/**
863		* Just like assertEquals(x, y), but additionally recording (using
864	<	* threadRecordFailure) any AssertionFailedError thrown, so that
865	<	* the current testcase will fail.
864	>	* threadRecordFailure) any AssertionError thrown, so that the
865	>	* current testcase will fail.
866		*/
867		public void threadAssertEquals(Object x, Object y) {
868		try {
869		assertEquals(x, y);
870	<	} catch (AssertionFailedError t) {
871	<	threadRecordFailure(t);
872	<	throw t;
873	<	} catch (Throwable t) {
874	<	threadUnexpectedException(t);
870	>	} catch (AssertionError fail) {
871	>	threadRecordFailure(fail);
872	>	throw fail;
873	>	} catch (Throwable fail) {
874	>	threadUnexpectedException(fail);
875		}
876		}
877
878		/**
879		* Just like assertSame(x, y), but additionally recording (using
880	<	* threadRecordFailure) any AssertionFailedError thrown, so that
881	<	* the current testcase will fail.
880	>	* threadRecordFailure) any AssertionError thrown, so that the
881	>	* current testcase will fail.
882		*/
883		public void threadAssertSame(Object x, Object y) {
884		try {
885		assertSame(x, y);
886	<	} catch (AssertionFailedError t) {
887	<	threadRecordFailure(t);
888	<	throw t;
886	>	} catch (AssertionError fail) {
887	>	threadRecordFailure(fail);
888	>	throw fail;
889		}
890		}
891
#	Line 424 | Line 905 | public class JSR166TestCase extends Test
905
906		/**
907		* Records the given exception using {@link #threadRecordFailure},
908	<	* then rethrows the exception, wrapping it in an
909	<	* AssertionFailedError if necessary.
908	>	* then rethrows the exception, wrapping it in an AssertionError
909	>	* if necessary.
910		*/
911		public void threadUnexpectedException(Throwable t) {
912		threadRecordFailure(t);
#	Line 434 | Line 915 | public class JSR166TestCase extends Test
915		throw (RuntimeException) t;
916		else if (t instanceof Error)
917		throw (Error) t;
918	<	else {
919	<	AssertionFailedError afe =
439	<	new AssertionFailedError("unexpected exception: " + t);
440	<	t.initCause(t);
441	<	throw afe;
442	<	}
918	>	else
919	>	throw new AssertionError("unexpected exception: " + t, t);
920		}
921
922		/**
923	<	* Delays, via Thread.sleep for the given millisecond delay, but
923	>	* Delays, via Thread.sleep, for the given millisecond delay, but
924		* if the sleep is shorter than specified, may re-sleep or yield
925	<	* until time elapses.
925	>	* until time elapses.  Ensures that the given time, as measured
926	>	* by System.nanoTime(), has elapsed.
927		*/
928	<	public static void delay(long ms) throws InterruptedException {
929	<	long startTime = System.nanoTime();
930	<	long ns = ms * 1000 * 1000;
931	<	for (;;) {
932	<	if (ms > 0L)
933	<	Thread.sleep(ms);
928	>	static void delay(long millis) throws InterruptedException {
929	>	long nanos = millis * (1000 * 1000);
930	>	final long wakeupTime = System.nanoTime() + nanos;
931	>	do {
932	>	if (millis > 0L)
933	>	Thread.sleep(millis);
934		else // too short to sleep
935		Thread.yield();
936	<	long d = ns - (System.nanoTime() - startTime);
937	<	if (d > 0L)
938	<	ms = d / (1000 * 1000);
939	<	else
940	<	break;
936	>	nanos = wakeupTime - System.nanoTime();
937	>	millis = nanos / (1000 * 1000);
938	>	} while (nanos >= 0L);
939	>	}
940	>
941	>	/**
942	>	* Allows use of try-with-resources with per-test thread pools.
943	>	*/
944	>	class PoolCleaner implements AutoCloseable {
945	>	private final ExecutorService pool;
946	>	public PoolCleaner(ExecutorService pool) { this.pool = pool; }
947	>	public void close() { joinPool(pool); }
948	>	}
949	>
950	>	/**
951	>	* An extension of PoolCleaner that has an action to release the pool.
952	>	*/
953	>	class PoolCleanerWithReleaser extends PoolCleaner {
954	>	private final Runnable releaser;
955	>	public PoolCleanerWithReleaser(ExecutorService pool, Runnable releaser) {
956	>	super(pool);
957	>	this.releaser = releaser;
958		}
959	+	public void close() {
960	+	try {
961	+	releaser.run();
962	+	} finally {
963	+	super.close();
964	+	}
965	+	}
966	+	}
967	+
968	+	PoolCleaner cleaner(ExecutorService pool) {
969	+	return new PoolCleaner(pool);
970	+	}
971	+
972	+	PoolCleaner cleaner(ExecutorService pool, Runnable releaser) {
973	+	return new PoolCleanerWithReleaser(pool, releaser);
974	+	}
975	+
976	+	PoolCleaner cleaner(ExecutorService pool, CountDownLatch latch) {
977	+	return new PoolCleanerWithReleaser(pool, releaser(latch));
978	+	}
979	+
980	+	Runnable releaser(final CountDownLatch latch) {
981	+	return new Runnable() { public void run() {
982	+	do { latch.countDown(); }
983	+	while (latch.getCount() > 0);
984	+	}};
985	+	}
986	+
987	+	PoolCleaner cleaner(ExecutorService pool, AtomicBoolean flag) {
988	+	return new PoolCleanerWithReleaser(pool, releaser(flag));
989	+	}
990	+
991	+	Runnable releaser(final AtomicBoolean flag) {
992	+	return new Runnable() { public void run() { flag.set(true); }};
993		}
994
995		/**
996		* Waits out termination of a thread pool or fails doing so.
997		*/
998	<	public void joinPool(ExecutorService exec) {
998	>	void joinPool(ExecutorService pool) {
999		try {
1000	<	exec.shutdown();
1001	<	assertTrue("ExecutorService did not terminate in a timely manner",
1002	<	exec.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS));
1000	>	pool.shutdown();
1001	>	if (!pool.awaitTermination(2 * LONG_DELAY_MS, MILLISECONDS)) {
1002	>	try {
1003	>	threadFail("ExecutorService " + pool +
1004	>	" did not terminate in a timely manner");
1005	>	} finally {
1006	>	// last resort, for the benefit of subsequent tests
1007	>	pool.shutdownNow();
1008	>	pool.awaitTermination(MEDIUM_DELAY_MS, MILLISECONDS);
1009	>	}
1010	>	}
1011		} catch (SecurityException ok) {
1012		// Allowed in case test doesn't have privs
1013	<	} catch (InterruptedException ie) {
1014	<	fail("Unexpected InterruptedException");
1013	>	} catch (InterruptedException fail) {
1014	>	threadFail("Unexpected InterruptedException");
1015		}
1016		}
1017
1018	+	/**
1019	+	* Like Runnable, but with the freedom to throw anything.
1020	+	* junit folks had the same idea:
1021	+	* http://junit.org/junit5/docs/snapshot/api/org/junit/gen5/api/Executable.html
1022	+	*/
1023	+	interface Action { public void run() throws Throwable; }
1024	+
1025	+	/**
1026	+	* Runs all the given actions in parallel, failing if any fail.
1027	+	* Useful for running multiple variants of tests that are
1028	+	* necessarily individually slow because they must block.
1029	+	*/
1030	+	void testInParallel(Action ... actions) {
1031	+	ExecutorService pool = Executors.newCachedThreadPool();
1032	+	try (PoolCleaner cleaner = cleaner(pool)) {
1033	+	ArrayList<Future<?>> futures = new ArrayList<>(actions.length);
1034	+	for (final Action action : actions)
1035	+	futures.add(pool.submit(new CheckedRunnable() {
1036	+	public void realRun() throws Throwable { action.run();}}));
1037	+	for (Future<?> future : futures)
1038	+	try {
1039	+	assertNull(future.get(LONG_DELAY_MS, MILLISECONDS));
1040	+	} catch (ExecutionException ex) {
1041	+	threadUnexpectedException(ex.getCause());
1042	+	} catch (Exception ex) {
1043	+	threadUnexpectedException(ex);
1044	+	}
1045	+	}
1046	+	}
1047	+
1048	+	/**
1049	+	* A debugging tool to print stack traces of most threads, as jstack does.
1050	+	* Uninteresting threads are filtered out.
1051	+	*/
1052	+	static void dumpTestThreads() {
1053	+	SecurityManager sm = System.getSecurityManager();
1054	+	if (sm != null) {
1055	+	try {
1056	+	System.setSecurityManager(null);
1057	+	} catch (SecurityException giveUp) {
1058	+	return;
1059	+	}
1060	+	}
1061	+
1062	+	ThreadMXBean threadMXBean = ManagementFactory.getThreadMXBean();
1063	+	System.err.println("------ stacktrace dump start ------");
1064	+	for (ThreadInfo info : threadMXBean.dumpAllThreads(true, true)) {
1065	+	final String name = info.getThreadName();
1066	+	String lockName;
1067	+	if ("Signal Dispatcher".equals(name))
1068	+	continue;
1069	+	if ("Reference Handler".equals(name)
1070	+	&& (lockName = info.getLockName()) != null
1071	+	&& lockName.startsWith("java.lang.ref.Reference$Lock"))
1072	+	continue;
1073	+	if ("Finalizer".equals(name)
1074	+	&& (lockName = info.getLockName()) != null
1075	+	&& lockName.startsWith("java.lang.ref.ReferenceQueue$Lock"))
1076	+	continue;
1077	+	if ("checkForWedgedTest".equals(name))
1078	+	continue;
1079	+	System.err.print(info);
1080	+	}
1081	+	System.err.println("------ stacktrace dump end ------");
1082	+
1083	+	if (sm != null) System.setSecurityManager(sm);
1084	+	}
1085	+
1086	+	/**
1087	+	* Checks that thread eventually enters the expected blocked thread state.
1088	+	*/
1089	+	void assertThreadBlocks(Thread thread, Thread.State expected) {
1090	+	// always sleep at least 1 ms, with high probability avoiding
1091	+	// transitory states
1092	+	for (long retries = LONG_DELAY_MS * 3 / 4; retries-->0; ) {
1093	+	try { delay(1); }
1094	+	catch (InterruptedException fail) {
1095	+	throw new AssertionError("Unexpected InterruptedException", fail);
1096	+	}
1097	+	Thread.State s = thread.getState();
1098	+	if (s == expected)
1099	+	return;
1100	+	else if (s == Thread.State.TERMINATED)
1101	+	fail("Unexpected thread termination");
1102	+	}
1103	+	fail("timed out waiting for thread to enter thread state " + expected);
1104	+	}
1105	+
1106	+	/**
1107	+	* Checks that future.get times out, with the default timeout of
1108	+	* {@code timeoutMillis()}.
1109	+	*/
1110	+	void assertFutureTimesOut(Future future) {
1111	+	assertFutureTimesOut(future, timeoutMillis());
1112	+	}
1113	+
1114	+	/**
1115	+	* Checks that future.get times out, with the given millisecond timeout.
1116	+	*/
1117	+	void assertFutureTimesOut(Future future, long timeoutMillis) {
1118	+	long startTime = System.nanoTime();
1119	+	try {
1120	+	future.get(timeoutMillis, MILLISECONDS);
1121	+	shouldThrow();
1122	+	} catch (TimeoutException success) {
1123	+	} catch (Exception fail) {
1124	+	threadUnexpectedException(fail);
1125	+	} finally { future.cancel(true); }
1126	+	assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1127	+	}
1128
1129		/**
1130		* Fails with message "should throw exception".
#	Line 494 | Line 1141 | public class JSR166TestCase extends Test
1141		}
1142
1143		/**
1144	+	* The maximum number of consecutive spurious wakeups we should
1145	+	* tolerate (from APIs like LockSupport.park) before failing a test.
1146	+	*/
1147	+	static final int MAX_SPURIOUS_WAKEUPS = 10;
1148	+
1149	+	/**
1150		* The number of elements to place in collections, arrays, etc.
1151		*/
1152		public static final int SIZE = 20;
#	Line 518 | Line 1171 | public class JSR166TestCase extends Test
1171		public static final Integer m6  = new Integer(-6);
1172		public static final Integer m10 = new Integer(-10);
1173
521	–
1174		/**
1175		* Runs Runnable r with a security policy that permits precisely
1176		* the specified permissions.  If there is no current security
#	Line 530 | Line 1182 | public class JSR166TestCase extends Test
1182		SecurityManager sm = System.getSecurityManager();
1183		if (sm == null) {
1184		r.run();
1185	+	}
1186	+	runWithSecurityManagerWithPermissions(r, permissions);
1187	+	}
1188	+
1189	+	/**
1190	+	* Runs Runnable r with a security policy that permits precisely
1191	+	* the specified permissions.  If there is no current security
1192	+	* manager, a temporary one is set for the duration of the
1193	+	* Runnable.  We require that any security manager permit
1194	+	* getPolicy/setPolicy.
1195	+	*/
1196	+	public void runWithSecurityManagerWithPermissions(Runnable r,
1197	+	Permission... permissions) {
1198	+	SecurityManager sm = System.getSecurityManager();
1199	+	if (sm == null) {
1200		Policy savedPolicy = Policy.getPolicy();
1201		try {
1202		Policy.setPolicy(permissivePolicy());
1203		System.setSecurityManager(new SecurityManager());
1204	<	runWithPermissions(r, permissions);
1204	>	runWithSecurityManagerWithPermissions(r, permissions);
1205		} finally {
1206		System.setSecurityManager(null);
1207		Policy.setPolicy(savedPolicy);
#	Line 582 | Line 1249 | public class JSR166TestCase extends Test
1249		return perms.implies(p);
1250		}
1251		public void refresh() {}
1252	+	public String toString() {
1253	+	List<Permission> ps = new ArrayList<>();
1254	+	for (Enumeration<Permission> e = perms.elements(); e.hasMoreElements();)
1255	+	ps.add(e.nextElement());
1256	+	return "AdjustablePolicy with permissions " + ps;
1257	+	}
1258		}
1259
1260		/**
#	Line 605 | Line 1278 | public class JSR166TestCase extends Test
1278
1279		/**
1280		* Sleeps until the given time has elapsed.
1281	<	* Throws AssertionFailedError if interrupted.
1281	>	* Throws AssertionError if interrupted.
1282		*/
1283	<	void sleep(long millis) {
1283	>	static void sleep(long millis) {
1284		try {
1285		delay(millis);
1286	<	} catch (InterruptedException ie) {
1287	<	AssertionFailedError afe =
615	<	new AssertionFailedError("Unexpected InterruptedException");
616	<	afe.initCause(ie);
617	<	throw afe;
1286	>	} catch (InterruptedException fail) {
1287	>	throw new AssertionError("Unexpected InterruptedException", fail);
1288		}
1289		}
1290
1291		/**
1292	<	* Sleeps until the timeout has elapsed, or interrupted.
623	<	* Does <em>NOT</em> throw InterruptedException.
624	<	*/
625	<	void sleepTillInterrupted(long timeoutMillis) {
626	<	try {
627	<	Thread.sleep(timeoutMillis);
628	<	} catch (InterruptedException wakeup) {}
629	<	}
630	<
631	<	/**
632	<	* Waits up to the specified number of milliseconds for the given
1292	>	* Spin-waits up to the specified number of milliseconds for the given
1293		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1294		*/
1295		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1296	<	long timeoutNanos = timeoutMillis * 1000L * 1000L;
637	<	long t0 = System.nanoTime();
1296	>	long startTime = 0L;
1297		for (;;) {
1298		Thread.State s = thread.getState();
1299		if (s == Thread.State.BLOCKED ||
#	Line 643 | Line 1302 | public class JSR166TestCase extends Test
1302		return;
1303		else if (s == Thread.State.TERMINATED)
1304		fail("Unexpected thread termination");
1305	<	else if (System.nanoTime() - t0 > timeoutNanos) {
1305	>	else if (startTime == 0L)
1306	>	startTime = System.nanoTime();
1307	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1308		threadAssertTrue(thread.isAlive());
1309	<	return;
1309	>	fail("timed out waiting for thread to enter wait state");
1310	>	}
1311	>	Thread.yield();
1312	>	}
1313	>	}
1314	>
1315	>	/**
1316	>	* Spin-waits up to the specified number of milliseconds for the given
1317	>	* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1318	>	* and additionally satisfy the given condition.
1319	>	*/
1320	>	void waitForThreadToEnterWaitState(
1321	>	Thread thread, long timeoutMillis, Callable<Boolean> waitingForGodot) {
1322	>	long startTime = 0L;
1323	>	for (;;) {
1324	>	Thread.State s = thread.getState();
1325	>	if (s == Thread.State.BLOCKED ||
1326	>	s == Thread.State.WAITING ||
1327	>	s == Thread.State.TIMED_WAITING) {
1328	>	try {
1329	>	if (waitingForGodot.call())
1330	>	return;
1331	>	} catch (Throwable fail) { threadUnexpectedException(fail); }
1332	>	}
1333	>	else if (s == Thread.State.TERMINATED)
1334	>	fail("Unexpected thread termination");
1335	>	else if (startTime == 0L)
1336	>	startTime = System.nanoTime();
1337	>	else if (millisElapsedSince(startTime) > timeoutMillis) {
1338	>	threadAssertTrue(thread.isAlive());
1339	>	fail("timed out waiting for thread to enter wait state");
1340		}
1341		Thread.yield();
1342		}
1343		}
1344
1345		/**
1346	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1347	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
1346	>	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1347	>	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1348		*/
1349		void waitForThreadToEnterWaitState(Thread thread) {
1350		waitForThreadToEnterWaitState(thread, LONG_DELAY_MS);
1351		}
1352
1353		/**
1354	+	* Spin-waits up to LONG_DELAY_MS milliseconds for the given thread to
1355	+	* enter a wait state: BLOCKED, WAITING, or TIMED_WAITING,
1356	+	* and additionally satisfy the given condition.
1357	+	*/
1358	+	void waitForThreadToEnterWaitState(
1359	+	Thread thread, Callable<Boolean> waitingForGodot) {
1360	+	waitForThreadToEnterWaitState(thread, LONG_DELAY_MS, waitingForGodot);
1361	+	}
1362	+
1363	+	/**
1364		* Returns the number of milliseconds since time given by
1365		* startNanoTime, which must have been previously returned from a
1366	<	* call to {@link System.nanoTime()}.
1366	>	* call to {@link System#nanoTime()}.
1367		*/
1368	<	long millisElapsedSince(long startNanoTime) {
1368	>	static long millisElapsedSince(long startNanoTime) {
1369		return NANOSECONDS.toMillis(System.nanoTime() - startNanoTime);
1370		}
1371
1372	+	//     void assertTerminatesPromptly(long timeoutMillis, Runnable r) {
1373	+	//         long startTime = System.nanoTime();
1374	+	//         try {
1375	+	//             r.run();
1376	+	//         } catch (Throwable fail) { threadUnexpectedException(fail); }
1377	+	//         if (millisElapsedSince(startTime) > timeoutMillis/2)
1378	+	//             throw new AssertionError("did not return promptly");
1379	+	//     }
1380	+
1381	+	//     void assertTerminatesPromptly(Runnable r) {
1382	+	//         assertTerminatesPromptly(LONG_DELAY_MS/2, r);
1383	+	//     }
1384	+
1385	+	/**
1386	+	* Checks that timed f.get() returns the expected value, and does not
1387	+	* wait for the timeout to elapse before returning.
1388	+	*/
1389	+	<T> void checkTimedGet(Future<T> f, T expectedValue, long timeoutMillis) {
1390	+	long startTime = System.nanoTime();
1391	+	T actual = null;
1392	+	try {
1393	+	actual = f.get(timeoutMillis, MILLISECONDS);
1394	+	} catch (Throwable fail) { threadUnexpectedException(fail); }
1395	+	assertEquals(expectedValue, actual);
1396	+	if (millisElapsedSince(startTime) > timeoutMillis/2)
1397	+	throw new AssertionError("timed get did not return promptly");
1398	+	}
1399	+
1400	+	<T> void checkTimedGet(Future<T> f, T expectedValue) {
1401	+	checkTimedGet(f, expectedValue, LONG_DELAY_MS);
1402	+	}
1403	+
1404		/**
1405		* Returns a new started daemon Thread running the given runnable.
1406		*/
#	Line 686 | Line 1419 | public class JSR166TestCase extends Test
1419		void awaitTermination(Thread t, long timeoutMillis) {
1420		try {
1421		t.join(timeoutMillis);
1422	<	} catch (InterruptedException ie) {
1423	<	threadUnexpectedException(ie);
1422	>	} catch (InterruptedException fail) {
1423	>	threadUnexpectedException(fail);
1424		} finally {
1425	<	if (t.isAlive()) {
1425	>	if (t.getState() != Thread.State.TERMINATED) {
1426		t.interrupt();
1427	<	fail("Test timed out");
1427	>	threadFail("timed out waiting for thread to terminate");
1428		}
1429		}
1430		}
#	Line 713 | Line 1446 | public class JSR166TestCase extends Test
1446		public final void run() {
1447		try {
1448		realRun();
1449	<	} catch (Throwable t) {
1450	<	threadUnexpectedException(t);
718	<	}
719	<	}
720	<	}
721	<
722	<	public abstract class RunnableShouldThrow implements Runnable {
723	<	protected abstract void realRun() throws Throwable;
724	<
725	<	final Class<?> exceptionClass;
726	<
727	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
728	<	this.exceptionClass = exceptionClass;
729	<	}
730	<
731	<	public final void run() {
732	<	try {
733	<	realRun();
734	<	threadShouldThrow(exceptionClass.getSimpleName());
735	<	} catch (Throwable t) {
736	<	if (! exceptionClass.isInstance(t))
737	<	threadUnexpectedException(t);
1449	>	} catch (Throwable fail) {
1450	>	threadUnexpectedException(fail);
1451		}
1452		}
1453		}
#	Line 767 | Line 1480 | public class JSR166TestCase extends Test
1480		realRun();
1481		threadShouldThrow("InterruptedException");
1482		} catch (InterruptedException success) {
1483	<	} catch (Throwable t) {
1484	<	threadUnexpectedException(t);
1483	>	threadAssertFalse(Thread.interrupted());
1484	>	} catch (Throwable fail) {
1485	>	threadUnexpectedException(fail);
1486		}
1487		}
1488		}
#	Line 779 | Line 1493 | public class JSR166TestCase extends Test
1493		public final T call() {
1494		try {
1495		return realCall();
1496	<	} catch (Throwable t) {
1497	<	threadUnexpectedException(t);
1496	>	} catch (Throwable fail) {
1497	>	threadUnexpectedException(fail);
1498		return null;
1499		}
1500		}
#	Line 796 | Line 1510 | public class JSR166TestCase extends Test
1510		threadShouldThrow("InterruptedException");
1511		return result;
1512		} catch (InterruptedException success) {
1513	<	} catch (Throwable t) {
1514	<	threadUnexpectedException(t);
1513	>	threadAssertFalse(Thread.interrupted());
1514	>	} catch (Throwable fail) {
1515	>	threadUnexpectedException(fail);
1516		}
1517		return null;
1518		}
#	Line 814 | Line 1529 | public class JSR166TestCase extends Test
1529		public static final String TEST_STRING = "a test string";
1530
1531		public static class StringTask implements Callable<String> {
1532	<	public String call() { return TEST_STRING; }
1532	>	final String value;
1533	>	public StringTask() { this(TEST_STRING); }
1534	>	public StringTask(String value) { this.value = value; }
1535	>	public String call() { return value; }
1536		}
1537
1538		public Callable<String> latchAwaitingStringTask(final CountDownLatch latch) {
#	Line 827 | Line 1545 | public class JSR166TestCase extends Test
1545		}};
1546		}
1547
1548	<	public Runnable awaiter(final CountDownLatch latch) {
1548	>	public Runnable countDowner(final CountDownLatch latch) {
1549		return new CheckedRunnable() {
1550		public void realRun() throws InterruptedException {
1551	<	latch.await();
1551	>	latch.countDown();
1552		}};
1553		}
1554
1555	<	public static class NPETask implements Callable<String> {
1556	<	public String call() { throw new NullPointerException(); }
1555	>	class LatchAwaiter extends CheckedRunnable {
1556	>	static final int NEW = 0;
1557	>	static final int RUNNING = 1;
1558	>	static final int DONE = 2;
1559	>	final CountDownLatch latch;
1560	>	int state = NEW;
1561	>	LatchAwaiter(CountDownLatch latch) { this.latch = latch; }
1562	>	public void realRun() throws InterruptedException {
1563	>	state = 1;
1564	>	await(latch);
1565	>	state = 2;
1566	>	}
1567		}
1568
1569	<	public static class CallableOne implements Callable<Integer> {
1570	<	public Integer call() { return one; }
1569	>	public LatchAwaiter awaiter(CountDownLatch latch) {
1570	>	return new LatchAwaiter(latch);
1571		}
1572
1573	<	public class ShortRunnable extends CheckedRunnable {
1574	<	protected void realRun() throws Throwable {
1575	<	delay(SHORT_DELAY_MS);
1573	>	public void await(CountDownLatch latch, long timeoutMillis) {
1574	>	boolean timedOut = false;
1575	>	try {
1576	>	timedOut = !latch.await(timeoutMillis, MILLISECONDS);
1577	>	} catch (Throwable fail) {
1578	>	threadUnexpectedException(fail);
1579		}
1580	+	if (timedOut)
1581	+	fail("timed out waiting for CountDownLatch for "
1582	+	+ (timeoutMillis/1000) + " sec");
1583		}
1584
1585	<	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1586	<	protected void realRun() throws InterruptedException {
853	<	delay(SHORT_DELAY_MS);
854	<	}
1585	>	public void await(CountDownLatch latch) {
1586	>	await(latch, LONG_DELAY_MS);
1587		}
1588
1589	<	public class SmallRunnable extends CheckedRunnable {
1590	<	protected void realRun() throws Throwable {
1591	<	delay(SMALL_DELAY_MS);
1589	>	public void await(Semaphore semaphore) {
1590	>	boolean timedOut = false;
1591	>	try {
1592	>	timedOut = !semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS);
1593	>	} catch (Throwable fail) {
1594	>	threadUnexpectedException(fail);
1595		}
1596	+	if (timedOut)
1597	+	fail("timed out waiting for Semaphore for "
1598	+	+ (LONG_DELAY_MS/1000) + " sec");
1599		}
1600
1601	<	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1602	<	protected void realRun() {
1603	<	try {
1604	<	delay(SMALL_DELAY_MS);
1605	<	} catch (InterruptedException ok) {}
1601	>	public void await(CyclicBarrier barrier) {
1602	>	try {
1603	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1604	>	} catch (Throwable fail) {
1605	>	threadUnexpectedException(fail);
1606		}
1607		}
1608
1609	<	public class SmallCallable extends CheckedCallable {
1610	<	protected Object realCall() throws InterruptedException {
1611	<	delay(SMALL_DELAY_MS);
1612	<	return Boolean.TRUE;
1613	<	}
1614	<	}
1609	>	//     /**
1610	>	//      * Spin-waits up to LONG_DELAY_MS until flag becomes true.
1611	>	//      */
1612	>	//     public void await(AtomicBoolean flag) {
1613	>	//         await(flag, LONG_DELAY_MS);
1614	>	//     }
1615	>
1616	>	//     /**
1617	>	//      * Spin-waits up to the specified timeout until flag becomes true.
1618	>	//      */
1619	>	//     public void await(AtomicBoolean flag, long timeoutMillis) {
1620	>	//         long startTime = System.nanoTime();
1621	>	//         while (!flag.get()) {
1622	>	//             if (millisElapsedSince(startTime) > timeoutMillis)
1623	>	//                 throw new AssertionError("timed out");
1624	>	//             Thread.yield();
1625	>	//         }
1626	>	//     }
1627
1628	<	public class MediumRunnable extends CheckedRunnable {
1629	<	protected void realRun() throws Throwable {
880	<	delay(MEDIUM_DELAY_MS);
881	<	}
1628	>	public static class NPETask implements Callable<String> {
1629	>	public String call() { throw new NullPointerException(); }
1630		}
1631
1632	<	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1633	<	protected void realRun() throws InterruptedException {
1634	<	delay(MEDIUM_DELAY_MS);
1632	>	public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1633	>	protected void realRun() {
1634	>	try {
1635	>	delay(SMALL_DELAY_MS);
1636	>	} catch (InterruptedException ok) {}
1637		}
1638		}
1639
#	Line 896 | Line 1646 | public class JSR166TestCase extends Test
1646		}};
1647		}
1648
899	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
900	–	protected void realRun() {
901	–	try {
902	–	delay(MEDIUM_DELAY_MS);
903	–	} catch (InterruptedException ok) {}
904	–	}
905	–	}
906	–
907	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
908	–	protected void realRun() {
909	–	try {
910	–	delay(LONG_DELAY_MS);
911	–	} catch (InterruptedException ok) {}
912	–	}
913	–	}
914	–
1649		/**
1650		* For use as ThreadFactory in constructors
1651		*/
#	Line 925 | Line 1659 | public class JSR166TestCase extends Test
1659		boolean isDone();
1660		}
1661
928	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
929	–	return new TrackedRunnable() {
930	–	private volatile boolean done = false;
931	–	public boolean isDone() { return done; }
932	–	public void run() {
933	–	try {
934	–	delay(timeoutMillis);
935	–	done = true;
936	–	} catch (InterruptedException ok) {}
937	–	}
938	–	};
939	–	}
940	–
941	–	public static class TrackedShortRunnable implements Runnable {
942	–	public volatile boolean done = false;
943	–	public void run() {
944	–	try {
945	–	delay(SHORT_DELAY_MS);
946	–	done = true;
947	–	} catch (InterruptedException ok) {}
948	–	}
949	–	}
950	–
951	–	public static class TrackedSmallRunnable implements Runnable {
952	–	public volatile boolean done = false;
953	–	public void run() {
954	–	try {
955	–	delay(SMALL_DELAY_MS);
956	–	done = true;
957	–	} catch (InterruptedException ok) {}
958	–	}
959	–	}
960	–
961	–	public static class TrackedMediumRunnable implements Runnable {
962	–	public volatile boolean done = false;
963	–	public void run() {
964	–	try {
965	–	delay(MEDIUM_DELAY_MS);
966	–	done = true;
967	–	} catch (InterruptedException ok) {}
968	–	}
969	–	}
970	–
971	–	public static class TrackedLongRunnable implements Runnable {
972	–	public volatile boolean done = false;
973	–	public void run() {
974	–	try {
975	–	delay(LONG_DELAY_MS);
976	–	done = true;
977	–	} catch (InterruptedException ok) {}
978	–	}
979	–	}
980	–
1662		public static class TrackedNoOpRunnable implements Runnable {
1663		public volatile boolean done = false;
1664		public void run() {
#	Line 985 | Line 1666 | public class JSR166TestCase extends Test
1666		}
1667		}
1668
988	–	public static class TrackedCallable implements Callable {
989	–	public volatile boolean done = false;
990	–	public Object call() {
991	–	try {
992	–	delay(SMALL_DELAY_MS);
993	–	done = true;
994	–	} catch (InterruptedException ok) {}
995	–	return Boolean.TRUE;
996	–	}
997	–	}
998	–
1669		/**
1670		* Analog of CheckedRunnable for RecursiveAction
1671		*/
1672		public abstract class CheckedRecursiveAction extends RecursiveAction {
1673		protected abstract void realCompute() throws Throwable;
1674
1675	<	public final void compute() {
1675	>	@Override protected final void compute() {
1676		try {
1677		realCompute();
1678	<	} catch (Throwable t) {
1679	<	threadUnexpectedException(t);
1678	>	} catch (Throwable fail) {
1679	>	threadUnexpectedException(fail);
1680		}
1681		}
1682		}
#	Line 1017 | Line 1687 | public class JSR166TestCase extends Test
1687		public abstract class CheckedRecursiveTask<T> extends RecursiveTask<T> {
1688		protected abstract T realCompute() throws Throwable;
1689
1690	<	public final T compute() {
1690	>	@Override protected final T compute() {
1691		try {
1692		return realCompute();
1693	<	} catch (Throwable t) {
1694	<	threadUnexpectedException(t);
1693	>	} catch (Throwable fail) {
1694	>	threadUnexpectedException(fail);
1695		return null;
1696		}
1697		}
#	Line 1036 | Line 1706 | public class JSR166TestCase extends Test
1706		}
1707
1708		/**
1709	<	* A CyclicBarrier that fails with AssertionFailedErrors instead
1710	<	* of throwing checked exceptions.
1709	>	* A CyclicBarrier that uses timed await and fails with
1710	>	* AssertionErrors instead of throwing checked exceptions.
1711		*/
1712	<	public class CheckedBarrier extends CyclicBarrier {
1712	>	public static class CheckedBarrier extends CyclicBarrier {
1713		public CheckedBarrier(int parties) { super(parties); }
1714
1715		public int await() {
1716		try {
1717	<	return super.await();
1718	<	} catch (Exception e) {
1719	<	AssertionFailedError afe =
1720	<	new AssertionFailedError("Unexpected exception: " + e);
1721	<	afe.initCause(e);
1052	<	throw afe;
1717	>	return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1718	>	} catch (TimeoutException timedOut) {
1719	>	throw new AssertionError("timed out");
1720	>	} catch (Exception fail) {
1721	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1722		}
1723		}
1724		}
1725
1726	<	public void checkEmpty(BlockingQueue q) {
1726	>	void checkEmpty(BlockingQueue q) {
1727		try {
1728		assertTrue(q.isEmpty());
1729		assertEquals(0, q.size());
1730		assertNull(q.peek());
1731		assertNull(q.poll());
1732	<	assertNull(q.poll(0, MILLISECONDS));
1732	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1733		assertEquals(q.toString(), "[]");
1734		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1735		assertFalse(q.iterator().hasNext());
#	Line 1076 | Line 1745 | public class JSR166TestCase extends Test
1745		q.remove();
1746		shouldThrow();
1747		} catch (NoSuchElementException success) {}
1748	<	} catch (InterruptedException ie) {
1749	<	threadUnexpectedException(ie);
1748	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1749	>	}
1750	>
1751	>	void assertSerialEquals(Object x, Object y) {
1752	>	assertTrue(Arrays.equals(serialBytes(x), serialBytes(y)));
1753	>	}
1754	>
1755	>	void assertNotSerialEquals(Object x, Object y) {
1756	>	assertFalse(Arrays.equals(serialBytes(x), serialBytes(y)));
1757	>	}
1758	>
1759	>	byte[] serialBytes(Object o) {
1760	>	try {
1761	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1762	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1763	>	oos.writeObject(o);
1764	>	oos.flush();
1765	>	oos.close();
1766	>	return bos.toByteArray();
1767	>	} catch (Throwable fail) {
1768	>	threadUnexpectedException(fail);
1769	>	return new byte[0];
1770	>	}
1771	>	}
1772	>
1773	>	void assertImmutable(final Object o) {
1774	>	if (o instanceof Collection) {
1775	>	assertThrows(
1776	>	UnsupportedOperationException.class,
1777	>	new Runnable() { public void run() {
1778	>	((Collection) o).add(null);}});
1779	>	}
1780	>	}
1781	>
1782	>	@SuppressWarnings("unchecked")
1783	>	<T> T serialClone(T o) {
1784	>	T clone = null;
1785	>	try {
1786	>	ObjectInputStream ois = new ObjectInputStream
1787	>	(new ByteArrayInputStream(serialBytes(o)));
1788	>	clone = (T) ois.readObject();
1789	>	} catch (Throwable fail) {
1790	>	threadUnexpectedException(fail);
1791	>	}
1792	>	if (o == clone) assertImmutable(o);
1793	>	else assertSame(o.getClass(), clone.getClass());
1794	>	return clone;
1795	>	}
1796	>
1797	>	/**
1798	>	* A version of serialClone that leaves error handling (for
1799	>	* e.g. NotSerializableException) up to the caller.
1800	>	*/
1801	>	@SuppressWarnings("unchecked")
1802	>	<T> T serialClonePossiblyFailing(T o)
1803	>	throws ReflectiveOperationException, java.io.IOException {
1804	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1805	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1806	>	oos.writeObject(o);
1807	>	oos.flush();
1808	>	oos.close();
1809	>	ObjectInputStream ois = new ObjectInputStream
1810	>	(new ByteArrayInputStream(bos.toByteArray()));
1811	>	T clone = (T) ois.readObject();
1812	>	if (o == clone) assertImmutable(o);
1813	>	else assertSame(o.getClass(), clone.getClass());
1814	>	return clone;
1815	>	}
1816	>
1817	>	/**
1818	>	* If o implements Cloneable and has a public clone method,
1819	>	* returns a clone of o, else null.
1820	>	*/
1821	>	@SuppressWarnings("unchecked")
1822	>	<T> T cloneableClone(T o) {
1823	>	if (!(o instanceof Cloneable)) return null;
1824	>	final T clone;
1825	>	try {
1826	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1827	>	} catch (NoSuchMethodException ok) {
1828	>	return null;
1829	>	} catch (ReflectiveOperationException unexpected) {
1830	>	throw new Error(unexpected);
1831	>	}
1832	>	assertNotSame(o, clone); // not 100% guaranteed by spec
1833	>	assertSame(o.getClass(), clone.getClass());
1834	>	return clone;
1835	>	}
1836	>
1837	>	public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
1838	>	Runnable... throwingActions) {
1839	>	for (Runnable throwingAction : throwingActions) {
1840	>	boolean threw = false;
1841	>	try { throwingAction.run(); }
1842	>	catch (Throwable t) {
1843	>	threw = true;
1844	>	if (!expectedExceptionClass.isInstance(t))
1845	>	throw new AssertionError(
1846	>	"Expected " + expectedExceptionClass.getName() +
1847	>	", got " + t.getClass().getName(),
1848	>	t);
1849	>	}
1850	>	if (!threw)
1851	>	shouldThrow(expectedExceptionClass.getName());
1852	>	}
1853	>	}
1854	>
1855	>	public void assertIteratorExhausted(Iterator<?> it) {
1856	>	try {
1857	>	it.next();
1858	>	shouldThrow();
1859	>	} catch (NoSuchElementException success) {}
1860	>	assertFalse(it.hasNext());
1861	>	}
1862	>
1863	>	public <T> Callable<T> callableThrowing(final Exception ex) {
1864	>	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1865	>	}
1866	>
1867	>	public Runnable runnableThrowing(final RuntimeException ex) {
1868	>	return new Runnable() { public void run() { throw ex; }};
1869	>	}
1870	>
1871	>	/** A reusable thread pool to be shared by tests. */
1872	>	static final ExecutorService cachedThreadPool =
1873	>	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1874	>	1000L, MILLISECONDS,
1875	>	new SynchronousQueue<Runnable>());
1876	>
1877	>	static <T> void shuffle(T[] array) {
1878	>	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1879	>	}
1880	>
1881	>	/**
1882	>	* Returns the same String as would be returned by {@link
1883	>	* Object#toString}, whether or not the given object's class
1884	>	* overrides toString().
1885	>	*
1886	>	* @see System#identityHashCode
1887	>	*/
1888	>	static String identityString(Object x) {
1889	>	return x.getClass().getName()
1890	>	+ "@" + Integer.toHexString(System.identityHashCode(x));
1891	>	}
1892	>
1893	>	// --- Shared assertions for Executor tests ---
1894	>
1895	>	/**
1896	>	* Returns maximum number of tasks that can be submitted to given
1897	>	* pool (with bounded queue) before saturation (when submission
1898	>	* throws RejectedExecutionException).
1899	>	*/
1900	>	static final int saturatedSize(ThreadPoolExecutor pool) {
1901	>	BlockingQueue<Runnable> q = pool.getQueue();
1902	>	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1903	>	}
1904	>
1905	>	@SuppressWarnings("FutureReturnValueIgnored")
1906	>	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1907	>	try {
1908	>	e.execute((Runnable) null);
1909	>	shouldThrow();
1910	>	} catch (NullPointerException success) {}
1911	>
1912	>	if (! (e instanceof ExecutorService)) return;
1913	>	ExecutorService es = (ExecutorService) e;
1914	>	try {
1915	>	es.submit((Runnable) null);
1916	>	shouldThrow();
1917	>	} catch (NullPointerException success) {}
1918	>	try {
1919	>	es.submit((Runnable) null, Boolean.TRUE);
1920	>	shouldThrow();
1921	>	} catch (NullPointerException success) {}
1922	>	try {
1923	>	es.submit((Callable) null);
1924	>	shouldThrow();
1925	>	} catch (NullPointerException success) {}
1926	>
1927	>	if (! (e instanceof ScheduledExecutorService)) return;
1928	>	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1929	>	try {
1930	>	ses.schedule((Runnable) null,
1931	>	randomTimeout(), randomTimeUnit());
1932	>	shouldThrow();
1933	>	} catch (NullPointerException success) {}
1934	>	try {
1935	>	ses.schedule((Callable) null,
1936	>	randomTimeout(), randomTimeUnit());
1937	>	shouldThrow();
1938	>	} catch (NullPointerException success) {}
1939	>	try {
1940	>	ses.scheduleAtFixedRate((Runnable) null,
1941	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1942	>	shouldThrow();
1943	>	} catch (NullPointerException success) {}
1944	>	try {
1945	>	ses.scheduleWithFixedDelay((Runnable) null,
1946	>	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1947	>	shouldThrow();
1948	>	} catch (NullPointerException success) {}
1949	>	}
1950	>
1951	>	void setRejectedExecutionHandler(
1952	>	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1953	>	p.setRejectedExecutionHandler(handler);
1954	>	assertSame(handler, p.getRejectedExecutionHandler());
1955	>	}
1956	>
1957	>	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1958	>	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1959	>	final long savedTaskCount = p.getTaskCount();
1960	>	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1961	>	final int savedQueueSize = p.getQueue().size();
1962	>	final boolean stock = (p.getClass().getClassLoader() == null);
1963	>
1964	>	Runnable r = () -> {};
1965	>	Callable<Boolean> c = () -> Boolean.TRUE;
1966	>
1967	>	class Recorder implements RejectedExecutionHandler {
1968	>	public volatile Runnable r = null;
1969	>	public volatile ThreadPoolExecutor p = null;
1970	>	public void reset() { r = null; p = null; }
1971	>	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1972	>	assertNull(this.r);
1973	>	assertNull(this.p);
1974	>	this.r = r;
1975	>	this.p = p;
1976	>	}
1977	>	}
1978	>
1979	>	// check custom handler is invoked exactly once per task
1980	>	Recorder recorder = new Recorder();
1981	>	setRejectedExecutionHandler(p, recorder);
1982	>	for (int i = 2; i--> 0; ) {
1983	>	recorder.reset();
1984	>	p.execute(r);
1985	>	if (stock && p.getClass() == ThreadPoolExecutor.class)
1986	>	assertSame(r, recorder.r);
1987	>	assertSame(p, recorder.p);
1988	>
1989	>	recorder.reset();
1990	>	assertFalse(p.submit(r).isDone());
1991	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1992	>	assertSame(p, recorder.p);
1993	>
1994	>	recorder.reset();
1995	>	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1996	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1997	>	assertSame(p, recorder.p);
1998	>
1999	>	recorder.reset();
2000	>	assertFalse(p.submit(c).isDone());
2001	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2002	>	assertSame(p, recorder.p);
2003	>
2004	>	if (p instanceof ScheduledExecutorService) {
2005	>	ScheduledExecutorService s = (ScheduledExecutorService) p;
2006	>	ScheduledFuture<?> future;
2007	>
2008	>	recorder.reset();
2009	>	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2010	>	assertFalse(future.isDone());
2011	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2012	>	assertSame(p, recorder.p);
2013	>
2014	>	recorder.reset();
2015	>	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2016	>	assertFalse(future.isDone());
2017	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2018	>	assertSame(p, recorder.p);
2019	>
2020	>	recorder.reset();
2021	>	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2022	>	assertFalse(future.isDone());
2023	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2024	>	assertSame(p, recorder.p);
2025	>
2026	>	recorder.reset();
2027	>	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2028	>	assertFalse(future.isDone());
2029	>	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2030	>	assertSame(p, recorder.p);
2031	>	}
2032	>	}
2033	>
2034	>	// Checking our custom handler above should be sufficient, but
2035	>	// we add some integration tests of standard handlers.
2036	>	final AtomicReference<Thread> thread = new AtomicReference<>();
2037	>	final Runnable setThread = () -> thread.set(Thread.currentThread());
2038	>
2039	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2040	>	try {
2041	>	p.execute(setThread);
2042	>	shouldThrow();
2043	>	} catch (RejectedExecutionException success) {}
2044	>	assertNull(thread.get());
2045	>
2046	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2047	>	p.execute(setThread);
2048	>	assertNull(thread.get());
2049	>
2050	>	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2051	>	p.execute(setThread);
2052	>	if (p.isShutdown())
2053	>	assertNull(thread.get());
2054	>	else
2055	>	assertSame(Thread.currentThread(), thread.get());
2056	>
2057	>	setRejectedExecutionHandler(p, savedHandler);
2058	>
2059	>	// check that pool was not perturbed by handlers
2060	>	assertEquals(savedTaskCount, p.getTaskCount());
2061	>	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2062	>	assertEquals(savedQueueSize, p.getQueue().size());
2063	>	}
2064	>
2065	>	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2066	>	assertEquals(x, y);
2067	>	assertEquals(y, x);
2068	>	assertEquals(x.isEmpty(), y.isEmpty());
2069	>	assertEquals(x.size(), y.size());
2070	>	if (x instanceof List) {
2071	>	assertEquals(x.toString(), y.toString());
2072	>	}
2073	>	if (x instanceof List || x instanceof Set) {
2074	>	assertEquals(x.hashCode(), y.hashCode());
2075	>	}
2076	>	if (x instanceof List || x instanceof Deque) {
2077	>	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2078	>	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2079	>	y.toArray(new Object[0])));
2080		}
2081		}
2082
2083	+	/**
2084	+	* A weaker form of assertCollectionsEquals which does not insist
2085	+	* that the two collections satisfy Object#equals(Object), since
2086	+	* they may use identity semantics as Deques do.
2087	+	*/
2088	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2089	+	if (x instanceof List || x instanceof Set)
2090	+	assertCollectionsEquals(x, y);
2091	+	else {
2092	+	assertEquals(x.isEmpty(), y.isEmpty());
2093	+	assertEquals(x.size(), y.size());
2094	+	assertEquals(new HashSet(x), new HashSet(y));
2095	+	if (x instanceof Deque) {
2096	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2097	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2098	+	y.toArray(new Object[0])));
2099	+	}
2100	+	}
2101	+	}
2102		}

Diff Legend

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