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

Comparing jsr166/src/test/tck/JSR166TestCase.java (file contents):
Revision 1.119 by jsr166, Mon Jun 16 20:13:54 2014 UTC vs.
Revision 1.245 by jsr166, Sun Jul 22 21:19:14 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.*;
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;
60	+	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.concurrent.*;
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;
27	–	import static java.util.concurrent.TimeUnit.MILLISECONDS;
28	–	import static java.util.concurrent.TimeUnit.NANOSECONDS;
103		import java.util.regex.Pattern;
104	<	import java.security.CodeSource;
105	<	import java.security.Permission;
106	<	import java.security.PermissionCollection;
107	<	import java.security.Permissions;
108	<	import java.security.Policy;
35	<	import java.security.ProtectionDomain;
36	<	import java.security.SecurityPermission;
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 45 | 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 67 | 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>
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
88	<	* 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 143 | Line 214 | public class JSR166TestCase extends Test
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.
#	Line 154 | Line 272 | public class JSR166TestCase extends Test
272		return (regex == null) ? null : Pattern.compile(regex);
273		}
274
275	<	protected void runTest() throws Throwable {
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	<	for (int i = 0; i < runsPerTest; i++) {
326	<	if (profileTests)
327	<	runTestProfiled();
328	<	else
329	<	super.runTest();
330	<	}
324	>	|| methodFilter.matcher(toString()).find())
325	>	super.runBare();
326	>	}
327	>
328	>	protected void runTest() throws Throwable {
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	<	// Warmup run, notably to trigger all needed classloading.
340	<	super.runTest();
172	<	long t0 = System.nanoTime();
173	<	try {
339	>	for (int i = 0; i < 2; i++) {
340	>	long startTime = System.nanoTime();
341		super.runTest();
342	<	} finally {
343	<	long elapsedMillis = millisElapsedSince(t0);
344	<	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.
184	–	* Optional command line arg provides the number of iterations to
185	–	* repeat running the tests.
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) {
197	<	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		}
201	–	System.exit(0);
404		}
405
406		public static TestSuite newTestSuite(Object... suiteOrClasses) {
#	Line 219 | Line 421 | public class JSR166TestCase extends Test
421		for (String testClassName : testClassNames) {
422		try {
423		Class<?> testClass = Class.forName(testClassName);
424	<	Method m = testClass.getDeclaredMethod("suite",
223	<	new Class<?>[0]);
424	>	Method m = testClass.getDeclaredMethod("suite");
425		suite.addTest(newTestSuite((Test)m.invoke(null)));
426	<	} catch (Exception e) {
427	<	throw new Error("Missing test class", e);
426	>	} catch (ReflectiveOperationException e) {
427	>	throw new AssertionError("Missing test class", e);
428		}
429		}
430		}
#	Line 245 | Line 446 | public class JSR166TestCase extends Test
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() {
453	<	// As of 2014-05, java9 still uses 52.0 class file version
454	<	return JAVA_SPECIFICATION_VERSION.startsWith("1.9");
254	<	}
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.
#	Line 272 | 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 294 | 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 322 | 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	<	"CountedCompleterTest",
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		}
#	Line 347 | Line 556 | public class JSR166TestCase extends Test
556		// Java9+ test classes
557		if (atLeastJava9()) {
558		String[] java9TestClassNames = {
559	<	"ThreadPoolExecutor9Test",
559	>	"AtomicBoolean9Test",
560	>	"AtomicInteger9Test",
561	>	"AtomicIntegerArray9Test",
562	>	"AtomicLong9Test",
563	>	"AtomicLongArray9Test",
564	>	"AtomicReference9Test",
565	>	"AtomicReferenceArray9Test",
566	>	"ExecutorCompletionService9Test",
567	>	"ForkJoinPool9Test",
568		};
569		addNamedTestClasses(suite, java9TestClassNames);
570		}
#	Line 355 | Line 572 | public class JSR166TestCase extends Test
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;
#	Line 362 | Line 640 | public class JSR166TestCase extends Test
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 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 could
672	<	* be reimplemented to use for example a Property.
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
680		/**
#	Line 380 | 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
695	<	* verify that operations block or time out.
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	<	long timeoutMillis() {
700	<	return SHORT_DELAY_MS / 4;
699	>	static long timeoutMillis() {
700	>	return TIMEOUT_DELAY_MS;
701		}
702
703		/**
704	<	* Returns a new Date instance representing a time delayMillis
705	<	* milliseconds in the future.
704	>	* Returns a new Date instance representing a time at least
705	>	* delayMillis milliseconds in the future.
706		*/
707		Date delayedDate(long delayMillis) {
708	<	return new Date(System.currentTimeMillis() + 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 409 | 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 416 | 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		*
#	Line 434 | 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 =
439	<	new AssertionFailedError(t.toString());
440	<	afe.initCause(t);
441	<	throw afe;
442	<	}
759	>	else
760	>	throw new AssertionError(t.toString(), t);
761		}
762
763		if (Thread.interrupted())
764	<	throw new AssertionFailedError("interrupt status set in main thread");
764	>	tearDownFail("interrupt status set in main thread");
765
766		checkForkJoinPoolThreadLeaks();
767		}
768
769		/**
770	<	* Find missing try { ... } finally { joinPool(e); }
770	>	* Finds missing PoolCleaners
771		*/
772		void checkForkJoinPoolThreadLeaks() throws InterruptedException {
773	<	Thread[] survivors = new Thread[5];
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];
#	Line 460 | Line 778 | public class JSR166TestCase extends Test
778		if (name.startsWith("ForkJoinPool-")) {
779		// give thread some time to terminate
780		thread.join(LONG_DELAY_MS);
781	<	if (!thread.isAlive()) continue;
782	<	thread.stop();
783	<	throw new AssertionFailedError
466	<	(String.format("Found leaked ForkJoinPool thread test=%s thread=%s%n",
467	<	toString(), name));
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 585 | 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 595 | 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 =
600	<	new AssertionFailedError("unexpected exception: " + t);
601	<	afe.initCause(t);
602	<	throw afe;
603	<	}
918	>	else
919	>	throw new AssertionError("unexpected exception: " + t, t);
920		}
921
922		/**
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		static void delay(long millis) throws InterruptedException {
929	<	long startTime = System.nanoTime();
930	<	long ns = millis * 1000 * 1000;
931	<	for (;;) {
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	<	millis = 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	<	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	<	* A debugging tool to print all stack traces, as jstack does.
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	<	static void printAllStackTraces() {
646	<	for (ThreadInfo info :
647	<	ManagementFactory.getThreadMXBean()
648	<	.dumpAllThreads(true, true))
649	<	System.err.print(info);
650	<	}
1023	>	interface Action { public void run() throws Throwable; }
1024
1025		/**
1026	<	* Checks that thread does not terminate within the default
1027	<	* millisecond delay of {@code timeoutMillis()}.
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 assertThreadStaysAlive(Thread thread) {
1031	<	assertThreadStaysAlive(thread, timeoutMillis());
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	<	* Checks that thread does not terminate within the given millisecond delay.
1049	>	* A debugging tool to print stack traces of most threads, as jstack does.
1050	>	* Uninteresting threads are filtered out.
1051		*/
1052	<	void assertThreadStaysAlive(Thread thread, long millis) {
1053	<	try {
1054	<	// No need to optimize the failing case via Thread.join.
1055	<	delay(millis);
1056	<	assertTrue(thread.isAlive());
1057	<	} catch (InterruptedException ie) {
1058	<	fail("Unexpected InterruptedException");
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		}
671	–	}
1061
1062	<	/**
1063	<	* Checks that the threads do not terminate within the default
1064	<	* millisecond delay of {@code timeoutMillis()}.
1065	<	*/
1066	<	void assertThreadsStayAlive(Thread... threads) {
1067	<	assertThreadsStayAlive(timeoutMillis(), threads);
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 the threads do not terminate within the given millisecond delay.
1087	>	* Checks that thread eventually enters the expected blocked thread state.
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 ie) {
1096	<	fail("Unexpected InterruptedException");
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		/**
#	Line 709 | Line 1120 | public class JSR166TestCase extends Test
1120		future.get(timeoutMillis, MILLISECONDS);
1121		shouldThrow();
1122		} catch (TimeoutException success) {
1123	<	} catch (Exception e) {
1124	<	threadUnexpectedException(e);
1123	>	} catch (Exception fail) {
1124	>	threadUnexpectedException(fail);
1125		} finally { future.cancel(true); }
1126		assertTrue(millisElapsedSince(startTime) >= timeoutMillis);
1127		}
#	Line 730 | 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 833 | Line 1250 | public class JSR166TestCase extends Test
1250		}
1251		public void refresh() {}
1252		public String toString() {
1253	<	List<Permission> ps = new ArrayList<Permission>();
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;
#	Line 861 | 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 =
871	<	new AssertionFailedError("Unexpected InterruptedException");
872	<	afe.initCause(ie);
873	<	throw afe;
1286	>	} catch (InterruptedException fail) {
1287	>	throw new AssertionError("Unexpected InterruptedException", fail);
1288		}
1289		}
1290
#	Line 879 | Line 1293 | public class JSR166TestCase extends Test
1293		* thread to enter a wait state: BLOCKED, WAITING, or TIMED_WAITING.
1294		*/
1295		void waitForThreadToEnterWaitState(Thread thread, long timeoutMillis) {
1296	<	long startTime = System.nanoTime();
1296	>	long startTime = 0L;
1297		for (;;) {
1298		Thread.State s = thread.getState();
1299		if (s == Thread.State.BLOCKED ||
#	Line 888 | Line 1302 | public class JSR166TestCase extends Test
1302		return;
1303		else if (s == Thread.State.TERMINATED)
1304		fail("Unexpected thread termination");
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	<	* Waits up to LONG_DELAY_MS for the given thread to enter a wait
1317	<	* state: BLOCKED, WAITING, or TIMED_WAITING.
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	>	* 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		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 931 | 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.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 958 | Line 1446 | public class JSR166TestCase extends Test
1446		public final void run() {
1447		try {
1448		realRun();
1449	<	} catch (Throwable t) {
1450	<	threadUnexpectedException(t);
963	<	}
964	<	}
965	<	}
966	<
967	<	public abstract class RunnableShouldThrow implements Runnable {
968	<	protected abstract void realRun() throws Throwable;
969	<
970	<	final Class<?> exceptionClass;
971	<
972	<	<T extends Throwable> RunnableShouldThrow(Class<T> exceptionClass) {
973	<	this.exceptionClass = exceptionClass;
974	<	}
975	<
976	<	public final void run() {
977	<	try {
978	<	realRun();
979	<	threadShouldThrow(exceptionClass.getSimpleName());
980	<	} catch (Throwable t) {
981	<	if (! exceptionClass.isInstance(t))
982	<	threadUnexpectedException(t);
1449	>	} catch (Throwable fail) {
1450	>	threadUnexpectedException(fail);
1451		}
1452		}
1453		}
#	Line 1013 | Line 1481 | public class JSR166TestCase extends Test
1481		threadShouldThrow("InterruptedException");
1482		} catch (InterruptedException success) {
1483		threadAssertFalse(Thread.interrupted());
1484	<	} catch (Throwable t) {
1485	<	threadUnexpectedException(t);
1484	>	} catch (Throwable fail) {
1485	>	threadUnexpectedException(fail);
1486		}
1487		}
1488		}
#	Line 1025 | 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 1043 | Line 1511 | public class JSR166TestCase extends Test
1511		return result;
1512		} catch (InterruptedException success) {
1513		threadAssertFalse(Thread.interrupted());
1514	<	} catch (Throwable t) {
1515	<	threadUnexpectedException(t);
1514	>	} catch (Throwable fail) {
1515	>	threadUnexpectedException(fail);
1516		}
1517		return null;
1518		}
#	Line 1061 | 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 1074 | 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	<	await(latch);
1551	>	latch.countDown();
1552		}};
1553		}
1554
1555	<	public void await(CountDownLatch latch) {
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 LatchAwaiter awaiter(CountDownLatch latch) {
1570	>	return new LatchAwaiter(latch);
1571	>	}
1572	>
1573	>	public void await(CountDownLatch latch, long timeoutMillis) {
1574		try {
1575	<	assertTrue(latch.await(LONG_DELAY_MS, MILLISECONDS));
1576	<	} catch (Throwable t) {
1577	<	threadUnexpectedException(t);
1575	>	if (!latch.await(timeoutMillis, MILLISECONDS))
1576	>	fail("timed out waiting for CountDownLatch for "
1577	>	+ (timeoutMillis/1000) + " sec");
1578	>	} catch (Throwable fail) {
1579	>	threadUnexpectedException(fail);
1580		}
1581		}
1582
1583	+	public void await(CountDownLatch latch) {
1584	+	await(latch, LONG_DELAY_MS);
1585	+	}
1586	+
1587		public void await(Semaphore semaphore) {
1588		try {
1589	<	assertTrue(semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS));
1590	<	} catch (Throwable t) {
1591	<	threadUnexpectedException(t);
1589	>	if (!semaphore.tryAcquire(LONG_DELAY_MS, MILLISECONDS))
1590	>	fail("timed out waiting for Semaphore for "
1591	>	+ (LONG_DELAY_MS/1000) + " sec");
1592	>	} catch (Throwable fail) {
1593	>	threadUnexpectedException(fail);
1594	>	}
1595	>	}
1596	>
1597	>	public void await(CyclicBarrier barrier) {
1598	>	try {
1599	>	barrier.await(LONG_DELAY_MS, MILLISECONDS);
1600	>	} catch (Throwable fail) {
1601	>	threadUnexpectedException(fail);
1602		}
1603		}
1604
#	Line 1111 | Line 1616 | public class JSR166TestCase extends Test
1616		//         long startTime = System.nanoTime();
1617		//         while (!flag.get()) {
1618		//             if (millisElapsedSince(startTime) > timeoutMillis)
1619	<	//                 throw new AssertionFailedError("timed out");
1619	>	//                 throw new AssertionError("timed out");
1620		//             Thread.yield();
1621		//         }
1622		//     }
#	Line 1120 | Line 1625 | public class JSR166TestCase extends Test
1625		public String call() { throw new NullPointerException(); }
1626		}
1627
1123	–	public static class CallableOne implements Callable<Integer> {
1124	–	public Integer call() { return one; }
1125	–	}
1126	–
1127	–	public class ShortRunnable extends CheckedRunnable {
1128	–	protected void realRun() throws Throwable {
1129	–	delay(SHORT_DELAY_MS);
1130	–	}
1131	–	}
1132	–
1133	–	public class ShortInterruptedRunnable extends CheckedInterruptedRunnable {
1134	–	protected void realRun() throws InterruptedException {
1135	–	delay(SHORT_DELAY_MS);
1136	–	}
1137	–	}
1138	–
1139	–	public class SmallRunnable extends CheckedRunnable {
1140	–	protected void realRun() throws Throwable {
1141	–	delay(SMALL_DELAY_MS);
1142	–	}
1143	–	}
1144	–
1628		public class SmallPossiblyInterruptedRunnable extends CheckedRunnable {
1629		protected void realRun() {
1630		try {
#	Line 1150 | Line 1633 | public class JSR166TestCase extends Test
1633		}
1634		}
1635
1153	–	public class SmallCallable extends CheckedCallable {
1154	–	protected Object realCall() throws InterruptedException {
1155	–	delay(SMALL_DELAY_MS);
1156	–	return Boolean.TRUE;
1157	–	}
1158	–	}
1159	–
1160	–	public class MediumRunnable extends CheckedRunnable {
1161	–	protected void realRun() throws Throwable {
1162	–	delay(MEDIUM_DELAY_MS);
1163	–	}
1164	–	}
1165	–
1166	–	public class MediumInterruptedRunnable extends CheckedInterruptedRunnable {
1167	–	protected void realRun() throws InterruptedException {
1168	–	delay(MEDIUM_DELAY_MS);
1169	–	}
1170	–	}
1171	–
1636		public Runnable possiblyInterruptedRunnable(final long timeoutMillis) {
1637		return new CheckedRunnable() {
1638		protected void realRun() {
#	Line 1178 | Line 1642 | public class JSR166TestCase extends Test
1642		}};
1643		}
1644
1181	–	public class MediumPossiblyInterruptedRunnable extends CheckedRunnable {
1182	–	protected void realRun() {
1183	–	try {
1184	–	delay(MEDIUM_DELAY_MS);
1185	–	} catch (InterruptedException ok) {}
1186	–	}
1187	–	}
1188	–
1189	–	public class LongPossiblyInterruptedRunnable extends CheckedRunnable {
1190	–	protected void realRun() {
1191	–	try {
1192	–	delay(LONG_DELAY_MS);
1193	–	} catch (InterruptedException ok) {}
1194	–	}
1195	–	}
1196	–
1645		/**
1646		* For use as ThreadFactory in constructors
1647		*/
#	Line 1207 | Line 1655 | public class JSR166TestCase extends Test
1655		boolean isDone();
1656		}
1657
1210	–	public static TrackedRunnable trackedRunnable(final long timeoutMillis) {
1211	–	return new TrackedRunnable() {
1212	–	private volatile boolean done = false;
1213	–	public boolean isDone() { return done; }
1214	–	public void run() {
1215	–	try {
1216	–	delay(timeoutMillis);
1217	–	done = true;
1218	–	} catch (InterruptedException ok) {}
1219	–	}
1220	–	};
1221	–	}
1222	–
1223	–	public static class TrackedShortRunnable implements Runnable {
1224	–	public volatile boolean done = false;
1225	–	public void run() {
1226	–	try {
1227	–	delay(SHORT_DELAY_MS);
1228	–	done = true;
1229	–	} catch (InterruptedException ok) {}
1230	–	}
1231	–	}
1232	–
1233	–	public static class TrackedSmallRunnable implements Runnable {
1234	–	public volatile boolean done = false;
1235	–	public void run() {
1236	–	try {
1237	–	delay(SMALL_DELAY_MS);
1238	–	done = true;
1239	–	} catch (InterruptedException ok) {}
1240	–	}
1241	–	}
1242	–
1243	–	public static class TrackedMediumRunnable implements Runnable {
1244	–	public volatile boolean done = false;
1245	–	public void run() {
1246	–	try {
1247	–	delay(MEDIUM_DELAY_MS);
1248	–	done = true;
1249	–	} catch (InterruptedException ok) {}
1250	–	}
1251	–	}
1252	–
1253	–	public static class TrackedLongRunnable implements Runnable {
1254	–	public volatile boolean done = false;
1255	–	public void run() {
1256	–	try {
1257	–	delay(LONG_DELAY_MS);
1258	–	done = true;
1259	–	} catch (InterruptedException ok) {}
1260	–	}
1261	–	}
1262	–
1658		public static class TrackedNoOpRunnable implements Runnable {
1659		public volatile boolean done = false;
1660		public void run() {
#	Line 1267 | Line 1662 | public class JSR166TestCase extends Test
1662		}
1663		}
1664
1270	–	public static class TrackedCallable implements Callable {
1271	–	public volatile boolean done = false;
1272	–	public Object call() {
1273	–	try {
1274	–	delay(SMALL_DELAY_MS);
1275	–	done = true;
1276	–	} catch (InterruptedException ok) {}
1277	–	return Boolean.TRUE;
1278	–	}
1279	–	}
1280	–
1665		/**
1666		* Analog of CheckedRunnable for RecursiveAction
1667		*/
#	Line 1287 | Line 1671 | public class JSR166TestCase extends Test
1671		@Override protected final void compute() {
1672		try {
1673		realCompute();
1674	<	} catch (Throwable t) {
1675	<	threadUnexpectedException(t);
1674	>	} catch (Throwable fail) {
1675	>	threadUnexpectedException(fail);
1676		}
1677		}
1678		}
#	Line 1302 | Line 1686 | public class JSR166TestCase extends Test
1686		@Override protected final T compute() {
1687		try {
1688		return realCompute();
1689	<	} catch (Throwable t) {
1690	<	threadUnexpectedException(t);
1689	>	} catch (Throwable fail) {
1690	>	threadUnexpectedException(fail);
1691		return null;
1692		}
1693		}
#	Line 1319 | Line 1703 | public class JSR166TestCase extends Test
1703
1704		/**
1705		* A CyclicBarrier that uses timed await and fails with
1706	<	* AssertionFailedErrors instead of throwing checked exceptions.
1706	>	* AssertionErrors instead of throwing checked exceptions.
1707		*/
1708	<	public class CheckedBarrier extends CyclicBarrier {
1708	>	public static class CheckedBarrier extends CyclicBarrier {
1709		public CheckedBarrier(int parties) { super(parties); }
1710
1711		public int await() {
1712		try {
1713		return super.await(2 * LONG_DELAY_MS, MILLISECONDS);
1714	<	} catch (TimeoutException e) {
1715	<	throw new AssertionFailedError("timed out");
1716	<	} catch (Exception e) {
1717	<	AssertionFailedError afe =
1334	<	new AssertionFailedError("Unexpected exception: " + e);
1335	<	afe.initCause(e);
1336	<	throw afe;
1714	>	} catch (TimeoutException timedOut) {
1715	>	throw new AssertionError("timed out");
1716	>	} catch (Exception fail) {
1717	>	throw new AssertionError("Unexpected exception: " + fail, fail);
1718		}
1719		}
1720		}
#	Line 1344 | Line 1725 | public class JSR166TestCase extends Test
1725		assertEquals(0, q.size());
1726		assertNull(q.peek());
1727		assertNull(q.poll());
1728	<	assertNull(q.poll(0, MILLISECONDS));
1728	>	assertNull(q.poll(randomExpiredTimeout(), randomTimeUnit()));
1729		assertEquals(q.toString(), "[]");
1730		assertTrue(Arrays.equals(q.toArray(), new Object[0]));
1731		assertFalse(q.iterator().hasNext());
#	Line 1360 | Line 1741 | public class JSR166TestCase extends Test
1741		q.remove();
1742		shouldThrow();
1743		} catch (NoSuchElementException success) {}
1744	<	} catch (InterruptedException ie) {
1364	<	threadUnexpectedException(ie);
1365	<	}
1744	>	} catch (InterruptedException fail) { threadUnexpectedException(fail); }
1745		}
1746
1747		void assertSerialEquals(Object x, Object y) {
#	Line 1381 | Line 1760 | public class JSR166TestCase extends Test
1760		oos.flush();
1761		oos.close();
1762		return bos.toByteArray();
1763	<	} catch (Throwable t) {
1764	<	threadUnexpectedException(t);
1763	>	} catch (Throwable fail) {
1764	>	threadUnexpectedException(fail);
1765		return new byte[0];
1766		}
1767		}
1768
1769	+	void assertImmutable(final Object o) {
1770	+	if (o instanceof Collection) {
1771	+	assertThrows(
1772	+	UnsupportedOperationException.class,
1773	+	new Runnable() { public void run() {
1774	+	((Collection) o).add(null);}});
1775	+	}
1776	+	}
1777	+
1778		@SuppressWarnings("unchecked")
1779		<T> T serialClone(T o) {
1780		try {
1781		ObjectInputStream ois = new ObjectInputStream
1782		(new ByteArrayInputStream(serialBytes(o)));
1783		T clone = (T) ois.readObject();
1784	+	if (o == clone) assertImmutable(o);
1785		assertSame(o.getClass(), clone.getClass());
1786		return clone;
1787	<	} catch (Throwable t) {
1788	<	threadUnexpectedException(t);
1787	>	} catch (Throwable fail) {
1788	>	threadUnexpectedException(fail);
1789	>	return null;
1790	>	}
1791	>	}
1792	>
1793	>	/**
1794	>	* A version of serialClone that leaves error handling (for
1795	>	* e.g. NotSerializableException) up to the caller.
1796	>	*/
1797	>	@SuppressWarnings("unchecked")
1798	>	<T> T serialClonePossiblyFailing(T o)
1799	>	throws ReflectiveOperationException, java.io.IOException {
1800	>	ByteArrayOutputStream bos = new ByteArrayOutputStream();
1801	>	ObjectOutputStream oos = new ObjectOutputStream(bos);
1802	>	oos.writeObject(o);
1803	>	oos.flush();
1804	>	oos.close();
1805	>	ObjectInputStream ois = new ObjectInputStream
1806	>	(new ByteArrayInputStream(bos.toByteArray()));
1807	>	T clone = (T) ois.readObject();
1808	>	if (o == clone) assertImmutable(o);
1809	>	assertSame(o.getClass(), clone.getClass());
1810	>	return clone;
1811	>	}
1812	>
1813	>	/**
1814	>	* If o implements Cloneable and has a public clone method,
1815	>	* returns a clone of o, else null.
1816	>	*/
1817	>	@SuppressWarnings("unchecked")
1818	>	<T> T cloneableClone(T o) {
1819	>	if (!(o instanceof Cloneable)) return null;
1820	>	final T clone;
1821	>	try {
1822	>	clone = (T) o.getClass().getMethod("clone").invoke(o);
1823	>	} catch (NoSuchMethodException ok) {
1824		return null;
1825	+	} catch (ReflectiveOperationException unexpected) {
1826	+	throw new Error(unexpected);
1827		}
1828	+	assertNotSame(o, clone); // not 100% guaranteed by spec
1829	+	assertSame(o.getClass(), clone.getClass());
1830	+	return clone;
1831		}
1832
1833		public void assertThrows(Class<? extends Throwable> expectedExceptionClass,
#	Line 1408 | Line 1837 | public class JSR166TestCase extends Test
1837		try { throwingAction.run(); }
1838		catch (Throwable t) {
1839		threw = true;
1840	<	if (!expectedExceptionClass.isInstance(t)) {
1841	<	AssertionFailedError afe =
1842	<	new AssertionFailedError
1843	<	("Expected " + expectedExceptionClass.getName() +
1844	<	", got " + t.getClass().getName());
1416	<	afe.initCause(t);
1417	<	threadUnexpectedException(afe);
1418	<	}
1840	>	if (!expectedExceptionClass.isInstance(t))
1841	>	throw new AssertionError(
1842	>	"Expected " + expectedExceptionClass.getName() +
1843	>	", got " + t.getClass().getName(),
1844	>	t);
1845		}
1846		if (!threw)
1847		shouldThrow(expectedExceptionClass.getName());
1848		}
1849		}
1850	+
1851	+	public void assertIteratorExhausted(Iterator<?> it) {
1852	+	try {
1853	+	it.next();
1854	+	shouldThrow();
1855	+	} catch (NoSuchElementException success) {}
1856	+	assertFalse(it.hasNext());
1857	+	}
1858	+
1859	+	public <T> Callable<T> callableThrowing(final Exception ex) {
1860	+	return new Callable<T>() { public T call() throws Exception { throw ex; }};
1861	+	}
1862	+
1863	+	public Runnable runnableThrowing(final RuntimeException ex) {
1864	+	return new Runnable() { public void run() { throw ex; }};
1865	+	}
1866	+
1867	+	/** A reusable thread pool to be shared by tests. */
1868	+	static final ExecutorService cachedThreadPool =
1869	+	new ThreadPoolExecutor(0, Integer.MAX_VALUE,
1870	+	1000L, MILLISECONDS,
1871	+	new SynchronousQueue<Runnable>());
1872	+
1873	+	static <T> void shuffle(T[] array) {
1874	+	Collections.shuffle(Arrays.asList(array), ThreadLocalRandom.current());
1875	+	}
1876	+
1877	+	/**
1878	+	* Returns the same String as would be returned by {@link
1879	+	* Object#toString}, whether or not the given object's class
1880	+	* overrides toString().
1881	+	*
1882	+	* @see System#identityHashCode
1883	+	*/
1884	+	static String identityString(Object x) {
1885	+	return x.getClass().getName()
1886	+	+ "@" + Integer.toHexString(System.identityHashCode(x));
1887	+	}
1888	+
1889	+	// --- Shared assertions for Executor tests ---
1890	+
1891	+	/**
1892	+	* Returns maximum number of tasks that can be submitted to given
1893	+	* pool (with bounded queue) before saturation (when submission
1894	+	* throws RejectedExecutionException).
1895	+	*/
1896	+	static final int saturatedSize(ThreadPoolExecutor pool) {
1897	+	BlockingQueue<Runnable> q = pool.getQueue();
1898	+	return pool.getMaximumPoolSize() + q.size() + q.remainingCapacity();
1899	+	}
1900	+
1901	+	@SuppressWarnings("FutureReturnValueIgnored")
1902	+	void assertNullTaskSubmissionThrowsNullPointerException(Executor e) {
1903	+	try {
1904	+	e.execute((Runnable) null);
1905	+	shouldThrow();
1906	+	} catch (NullPointerException success) {}
1907	+
1908	+	if (! (e instanceof ExecutorService)) return;
1909	+	ExecutorService es = (ExecutorService) e;
1910	+	try {
1911	+	es.submit((Runnable) null);
1912	+	shouldThrow();
1913	+	} catch (NullPointerException success) {}
1914	+	try {
1915	+	es.submit((Runnable) null, Boolean.TRUE);
1916	+	shouldThrow();
1917	+	} catch (NullPointerException success) {}
1918	+	try {
1919	+	es.submit((Callable) null);
1920	+	shouldThrow();
1921	+	} catch (NullPointerException success) {}
1922	+
1923	+	if (! (e instanceof ScheduledExecutorService)) return;
1924	+	ScheduledExecutorService ses = (ScheduledExecutorService) e;
1925	+	try {
1926	+	ses.schedule((Runnable) null,
1927	+	randomTimeout(), randomTimeUnit());
1928	+	shouldThrow();
1929	+	} catch (NullPointerException success) {}
1930	+	try {
1931	+	ses.schedule((Callable) null,
1932	+	randomTimeout(), randomTimeUnit());
1933	+	shouldThrow();
1934	+	} catch (NullPointerException success) {}
1935	+	try {
1936	+	ses.scheduleAtFixedRate((Runnable) null,
1937	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1938	+	shouldThrow();
1939	+	} catch (NullPointerException success) {}
1940	+	try {
1941	+	ses.scheduleWithFixedDelay((Runnable) null,
1942	+	randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
1943	+	shouldThrow();
1944	+	} catch (NullPointerException success) {}
1945	+	}
1946	+
1947	+	void setRejectedExecutionHandler(
1948	+	ThreadPoolExecutor p, RejectedExecutionHandler handler) {
1949	+	p.setRejectedExecutionHandler(handler);
1950	+	assertSame(handler, p.getRejectedExecutionHandler());
1951	+	}
1952	+
1953	+	void assertTaskSubmissionsAreRejected(ThreadPoolExecutor p) {
1954	+	final RejectedExecutionHandler savedHandler = p.getRejectedExecutionHandler();
1955	+	final long savedTaskCount = p.getTaskCount();
1956	+	final long savedCompletedTaskCount = p.getCompletedTaskCount();
1957	+	final int savedQueueSize = p.getQueue().size();
1958	+	final boolean stock = (p.getClass().getClassLoader() == null);
1959	+
1960	+	Runnable r = () -> {};
1961	+	Callable<Boolean> c = () -> Boolean.TRUE;
1962	+
1963	+	class Recorder implements RejectedExecutionHandler {
1964	+	public volatile Runnable r = null;
1965	+	public volatile ThreadPoolExecutor p = null;
1966	+	public void reset() { r = null; p = null; }
1967	+	public void rejectedExecution(Runnable r, ThreadPoolExecutor p) {
1968	+	assertNull(this.r);
1969	+	assertNull(this.p);
1970	+	this.r = r;
1971	+	this.p = p;
1972	+	}
1973	+	}
1974	+
1975	+	// check custom handler is invoked exactly once per task
1976	+	Recorder recorder = new Recorder();
1977	+	setRejectedExecutionHandler(p, recorder);
1978	+	for (int i = 2; i--> 0; ) {
1979	+	recorder.reset();
1980	+	p.execute(r);
1981	+	if (stock && p.getClass() == ThreadPoolExecutor.class)
1982	+	assertSame(r, recorder.r);
1983	+	assertSame(p, recorder.p);
1984	+
1985	+	recorder.reset();
1986	+	assertFalse(p.submit(r).isDone());
1987	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1988	+	assertSame(p, recorder.p);
1989	+
1990	+	recorder.reset();
1991	+	assertFalse(p.submit(r, Boolean.TRUE).isDone());
1992	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1993	+	assertSame(p, recorder.p);
1994	+
1995	+	recorder.reset();
1996	+	assertFalse(p.submit(c).isDone());
1997	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
1998	+	assertSame(p, recorder.p);
1999	+
2000	+	if (p instanceof ScheduledExecutorService) {
2001	+	ScheduledExecutorService s = (ScheduledExecutorService) p;
2002	+	ScheduledFuture<?> future;
2003	+
2004	+	recorder.reset();
2005	+	future = s.schedule(r, randomTimeout(), randomTimeUnit());
2006	+	assertFalse(future.isDone());
2007	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2008	+	assertSame(p, recorder.p);
2009	+
2010	+	recorder.reset();
2011	+	future = s.schedule(c, randomTimeout(), randomTimeUnit());
2012	+	assertFalse(future.isDone());
2013	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2014	+	assertSame(p, recorder.p);
2015	+
2016	+	recorder.reset();
2017	+	future = s.scheduleAtFixedRate(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2018	+	assertFalse(future.isDone());
2019	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2020	+	assertSame(p, recorder.p);
2021	+
2022	+	recorder.reset();
2023	+	future = s.scheduleWithFixedDelay(r, randomTimeout(), LONG_DELAY_MS, MILLISECONDS);
2024	+	assertFalse(future.isDone());
2025	+	if (stock) assertTrue(!((FutureTask) recorder.r).isDone());
2026	+	assertSame(p, recorder.p);
2027	+	}
2028	+	}
2029	+
2030	+	// Checking our custom handler above should be sufficient, but
2031	+	// we add some integration tests of standard handlers.
2032	+	final AtomicReference<Thread> thread = new AtomicReference<>();
2033	+	final Runnable setThread = () -> thread.set(Thread.currentThread());
2034	+
2035	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.AbortPolicy());
2036	+	try {
2037	+	p.execute(setThread);
2038	+	shouldThrow();
2039	+	} catch (RejectedExecutionException success) {}
2040	+	assertNull(thread.get());
2041	+
2042	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.DiscardPolicy());
2043	+	p.execute(setThread);
2044	+	assertNull(thread.get());
2045	+
2046	+	setRejectedExecutionHandler(p, new ThreadPoolExecutor.CallerRunsPolicy());
2047	+	p.execute(setThread);
2048	+	if (p.isShutdown())
2049	+	assertNull(thread.get());
2050	+	else
2051	+	assertSame(Thread.currentThread(), thread.get());
2052	+
2053	+	setRejectedExecutionHandler(p, savedHandler);
2054	+
2055	+	// check that pool was not perturbed by handlers
2056	+	assertEquals(savedTaskCount, p.getTaskCount());
2057	+	assertEquals(savedCompletedTaskCount, p.getCompletedTaskCount());
2058	+	assertEquals(savedQueueSize, p.getQueue().size());
2059	+	}
2060	+
2061	+	void assertCollectionsEquals(Collection<?> x, Collection<?> y) {
2062	+	assertEquals(x, y);
2063	+	assertEquals(y, x);
2064	+	assertEquals(x.isEmpty(), y.isEmpty());
2065	+	assertEquals(x.size(), y.size());
2066	+	if (x instanceof List) {
2067	+	assertEquals(x.toString(), y.toString());
2068	+	}
2069	+	if (x instanceof List || x instanceof Set) {
2070	+	assertEquals(x.hashCode(), y.hashCode());
2071	+	}
2072	+	if (x instanceof List || x instanceof Deque) {
2073	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2074	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2075	+	y.toArray(new Object[0])));
2076	+	}
2077	+	}
2078	+
2079	+	/**
2080	+	* A weaker form of assertCollectionsEquals which does not insist
2081	+	* that the two collections satisfy Object#equals(Object), since
2082	+	* they may use identity semantics as Deques do.
2083	+	*/
2084	+	void assertCollectionsEquivalent(Collection<?> x, Collection<?> y) {
2085	+	if (x instanceof List || x instanceof Set)
2086	+	assertCollectionsEquals(x, y);
2087	+	else {
2088	+	assertEquals(x.isEmpty(), y.isEmpty());
2089	+	assertEquals(x.size(), y.size());
2090	+	assertEquals(new HashSet(x), new HashSet(y));
2091	+	if (x instanceof Deque) {
2092	+	assertTrue(Arrays.equals(x.toArray(), y.toArray()));
2093	+	assertTrue(Arrays.equals(x.toArray(new Object[0]),
2094	+	y.toArray(new Object[0])));
2095	+	}
2096	+	}
2097	+	}
2098		}

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